Faallo: Waxaa jira isku-dhafan heer sare ah oo u dhexeeya gobollada maskaxda ee ku lug leh habaynta abaal-marinnada dabiiciga ah iyo daroogada xadgudubka.

Sooc:

Kulamada galmo ee soo noqnoqda waxay sidoo kale kordhiyaan isticmaalka sukrose waxayna door bidaan qiyaasta yar ee amphetamine, iyagoo soo jeedinaya dareenka isdhaafka ah ee u dhexeeya khibrada galmada iyo abaalmarinta daroogada (Wallace et al., 2008; Pitchers et al, 2010b). Sidoo kale la mid ah saamaynta dareenka ee daroogooyinka xadgudubka (Segal iyo Mandell, 1974; Robinson iyo Becker, 1982; Robinson iyo Berridge, 2008), la kulanka galmada ee soo noqnoqda waxay dareensiisaa jawaabta NAc DA ee kulan dambe oo galmo ah (Kohlert iyo Meisel, 1999) .

Sida lagu sharraxay abaalmarinta cuntada, waayo-aragnimada galmadu waxay sidoo kale u horseedi kartaa firfircoonida calaamadaha calaamadaynta balaastigga ah. Qodobka qoraalka ee delta FosB wuxuu ku kordhay NAc, PFC, dorsal striatum, iyo VTA ka dib habdhaqan galmo oo soo noqnoqda (Wallace et al., 2008; Pitchers et al., 2010b). Korodhkan dabiiciga ah ee delta FosB ama fayraska xad-dhaafka ah ee delta FosB ee gudaha NAc ayaa wax ka beddeleysa waxqabadka galmada, iyo xannibaadda NAc ee delta FosB waxay hoos u dhigtaa dhaqankan (Hedges) et al, 2009; Pitchers et al., 2010b) Xulashadan gaarka ah waxay soo jeedinaysaa in kicinta cascade ee NAc iyo gobollada kale ee mesocorticolimbic ay si gaar ah u horseedi karaan caag kor u qaadaya dabeecadda rabitaanka mustaqbalka (Girault). et al, 2007).

Qaab dhismeedka neerfaha ee nidaamka mesocorticolimbic sidoo kale waa la beddelaa ka dib khibradda galmada. Pitchers iyo asxaabtooda ayaa dhawaan soo sheegay kororka dendrites iyo lafdhabarta dendritic ee NAc ee jiirka inta lagu jiro "ka-baxa" waayo-aragnimada galmada (Pitchers) et al., 2010a). Tani waxay sii ballaarinaysaa xogta kale ee muujinaysa in waayo-aragnimada galmadu ay beddeli karto morphology dendritic si la mid ah soo-gaadhista daroogada ee soo noqnoqda (Fiorino iyo Kolb, 2003; Robinson iyo Kolb, 2004; Meisel iyo Mullins, 2006).

… Ka dib soo-gaadhista waqtiga loo qabtay methamphetamine iyo waayo-aragnimada galmada, waxaa jiray iskudhac weyn oo neurons-ka oo ay dhaqaajiyeen labadan abaal-marin ee NAc, kortex cingulate hore, iyo amygdala basolateral (Frohmader) et al., 2010).

Neuropharmacology

2011;61(7):1109–1122. doi:10.1016/j.neuropharm.2011.03.010

Olsen CM.

aan la taaban karin

Waxaa jira isku-dhafan heer sare ah oo u dhexeeya gobollada maskaxda ee ku lug leh habaynta abaal-marinnada dabiiciga ah iyo daroogada xadgudubka. Qabatinka "aan-daroogada ahayn" ama "dabeecada" ayaa si isa soo taraysa looga diiwaan galiyay rugta caafimaadka, cudurada waxaa ka mid ah waxqabadyada qasabka ah sida wax iibsiga, cunista, jimicsiga, dhaqanka galmada, iyo khamaarka. Sida qabatinka maandooriyaha, balwadaha aan mukhaadaraadka ahayn ayaa ka muuqda calaamado ay ka mid yihiin rabitaan, xakamaynta daciifka ah ee habdhaqanka, dulqaadka, ka bixitaanka, iyo heerka soo noqoshada oo sarreeya. Isbeddelladan hab-dhaqanku waxay soo jeedinayaan in caagtu ay ka dhici karto gobollada maskaxda ee la xidhiidha balwadda. Dib u eegistaan, waxaan ku soo koobayaa xogta muujinaysa in soo-gaadhista abaal-marinnada aan daawadu ahayn ay bedeli karto caagga neerfaha ee gobollada maskaxda ee ay saameeyeen daroogooyinka xadgudubka. Cilmi-baaristu waxay soo jeedinaysaa in ay jiraan dhowr waxyaalood oo isku mid ah oo u dhexeeya neuroplasticity oo ay keentay abaal-marinnada dabiiciga ah iyo daroogada iyo in, iyada oo ku xidhan abaalmarinta, soo-celinta soo noqnoqda ee abaal-marinnada dabiiciga ah waxay keeni kartaa neuroplasticity kaas oo kor u qaada ama ka hortagaya dabeecadaha qabatinka.

Keywords: raadinta roonaanta, qabatinka, dhiirrigelinta, xoojinta, qabatinka akhlaaqda, baaxadda
Tag:

1. Hordhac

Hadda waxa jira bandhigyo telefishin oo aad u tiro badan oo diiwaangelinaya dadka sida khasabka ah ugu dhaqaaqa dabeecado haddii kale loo arko inay caadi yihiin, laakiin u sameeya qaab saamayn xun ku leh noloshooda iyo tan qoysaskooda. Dadka la ildaran waxa loo qaadan karo "aan daroogo ahayn" ama "dabeecad" balwadaha ayaa si isa soo taraya loogu diiwaan galinayaa rugta caafimaadka, calamadahana waxaa ka mid ah waxqabadyada qasabka ah sida wax iibsiga, cunista, jimicsiga, dhaqanka galmada, khamaarka, iyo ciyaaraha fiidiyowga (Holden, 2001) Deeq et al, 2006a). In kasta oo mawduucyada bandhigyada telefishanku ay u ekaan karaan xaalado xad dhaaf ah oo naadir ah, noocyadan cilladaha ayaa si la yaab leh caan u ah. Heerarka baahsanaanta ee Maraykanka ayaa lagu qiyaasay 1-2% khamaarka cudurada (Welte et al, 2001), 5% dhaqanka galmada qasabka ah (Schaffer iyo Zimmerman, 1990), 2.8% khalkhalka-cunidda xad-dhaafka ah (Hudson et al, 2007) iyo 5-6% iibsashada khasabka ah (Black, 2007).

In kasta oo DSM-IV ay aqoonsan tahay xanuunnadan iyo dabeecadaha kale ee “la qabatimay”, hadda looma kala saarin balwadaha dhaqanka. Tani waxaa laga yaabaa inay sabab u tahay xaqiiqda ah in DSM-IV ay ka fogaato ereyga qabatinka xitaa marka loo eego daroogooyinka xadgudubka, iyada oo door bidaaya ereyada "xad-gudub" iyo "ku-tiirsanaan". Gudaha DSM-IV, balwadaha habdhaqanka waxaa lagu soo koobay qaybo ay ka mid yihiin "xannuunka laxiriira walxaha", "cudurada cunnada", iyo "xanuunka xakameynta dareenka ee aan meel kale lagu kala saarin" (Holden, 2001; Potenza, 2006). Dhawaanahan, waxaa jiray isbeddel ku wajahan in laga fikiro balwadahan aan daroogada ahayn si ay u noqdaan kuwo la mid ah isticmaalka mukhaadaraadka iyo ku-tiirsanaanta (Rogers iyo Smit, 2000; Wang et al, 2004b; Volkow iyo Wise, 2005; Deeq et al., 2006a; Petry, 2006; Teegarden iyo Bale, 2007; Deadwyler, 2010; Deeq et al, 2010). Dhab ahaantii, balwadaha aan maandooriyaha ahayn waxay ku habboon yihiin qeexida qadiimiga ah ee qabatinka taas oo ay ku jirto ku lug lahaanshaha dhaqanka inkastoo cawaaqib xun xun (Holden, 2001; Hyman et al, 2006). Dhacdadan waxaa ka mahad celiyay dhakhaatiirta dhimirku, iyo dib u eegisyada la soo jeediyay ee DSM-5 waxaa ku jira qayb ka mid ah Qabatinka iyo Dhaqanka La Xiriira ((APA), 2010). Qaybtan dhexdeeda, qaybta Balwadaha Dhaqanka ayaa la soo jeediyay, taas oo ay ku jiraan khamaarka cudurada iyo balwadda internetka ee suurtogalka ah ((APA), 2010; O'Brien, 2010; Tao et al, 2010).

Sida balwadaha maandooriyaha, balwadaha aan maandooriyaha ahayn waxay ka muuqdaan qaabab nafsi ah iyo dabeecad isku mid ah oo ay ku jiraan damaca, xakamaynta daciifka ah ee habdhaqanka, dulqaadka, ka bixitaanka, iyo heerka sare ee soo noqoshada (Marks, 1990; Lejoyeux et al, 2000; Machadka Qaranka ee Xad-gudubka Daroogada (NIDA) et al, 2002; Potenza, 2006). U ekaanshaha daroogada iyo abaal-marinnada aan dawada ahayn ayaa sidoo kale lagu arki karaa jir ahaan. Daraasadaha neuroimaging functional ee aadanaha ayaa muujiyay in khamaarka (Breiter et al, 2001), wax iibsiga (Knutson et al, 2007), kacsiga (Komisaruk et al, 2004), ciyaarista ciyaaraha fiidyaha (Koepp et al, 1998; Hoeft et al, 2008) iyo aragga cuntada rabitaanka cuntada (Wang et al, 2004a) dhaqaajiya qaar badan oo ka mid ah isla gobalada maskaxda (ie, nidaamka mesocorticolimbic iyo amygdala fidsan) sida daroogooyinka xadgudubka (Volkow). et al, 2004). Maqaalkani wuxuu dib u eegi doonaa caddaynta saxda ah ee xoojiyayaasha dabiiciga ah ee awood u leh inay u horseedaan caagagga dabeecadda iyo neurotransmission taas oo inta badan xasuusinaysa la qabsiga la arko ka dib soo-gaadhista daroogooyinka xadgudubka, gaar ahaan maskaxiyan. Dib-u-eegga hadda jira awgeed, caagnimada waxaa si ballaadhan loogu qeexi doonaa la qabsiga hab-dhaqanka ama shaqada neerfaha, oo la mid ah adeegsiga ereyga uu asal ahaan ku sifeeyay William James (James, 1890). Balaastigga synaptika waxay tixraaci doontaa isbeddelka heerka synapse-ka, sida caadiga ah lagu cabbiro iyadoo la adeegsanayo hababka korantada (tusaale, isbeddellada saamiga AMPA/NMDA). Plasticity Neurochemical waxay tixraaci doontaa isbeddelka neurotransmission (synaptic ama intracellular) oo lagu cabbiro biochemically iyadoo lagu cabbiro kala duwanaanshaha heerarka aasaasiga ah ama la kiciyey ee gudbiyaha, reseptors, ama gaadiidka, ama isbeddelka joogtada ah ee xaaladda fosforyaalka mid ka mid ah molecules-kan. Caagagga dabeecadda waxay tixraaci doontaa la-qabsiga hab-dhaqan kasta (tusaaleyaal dhowr ah ayaa lagaga hadlay Qaybta 1.1).

Wareegyada neerfaha ee hoosta ka xarriiqaya codaynta abaal-marinnada dabiiciga ah ayaa loo malaynayaa inay "afduubteen" daroogooyinka xadgudubka, iyo caagagga wareegyadan ayaa la rumeysan yahay inay mas'uul ka yihiin caagagga dabeecadda (tusaale kordhinta daroogada iyo damaca) sifada qabatinka (Kelley iyo Berridge, 2002; Aston-Jones iyo Harris, 2004; Kalivas iyo O'Brien, 2008; Wanat et al, 2009b). Caddaynta afduubkan waxaa lagu arkay dhowr nooc oo balaastig ah oo ku yaal gobollada maskaxda ee loo yaqaan inay saameeyaan dhiirigelinta, shaqada fulinta, iyo habaynta abaalmarinta (Kalivas iyo O'Brien, 2008; Thomas et al, 2008; Frascella et al, 2010; Koob iyo Volkow, 2010; Pierce iyo Vanderschuren, 2010; Ruush et al, 2010). Moodooyinka xayawaanku waxay na siiyeen sawir muuqaal ah oo ku saabsan isbeddellada qoto dheer ee maamulka daroogada xadgudubka uu ku siin karo. Laqabsashadu waxay u dhaxaysaa heerarka neurotransmitter ee la beddelay ilaa qaab-dhismeedka unugyada oo beddelay iyo isbeddellada dhaqdhaqaaqa qoraalka (Robinson iyo Kolb, 2004; Kalivas et al, 2009; Ruush et al., 2010). Kooxo dhowr ah ayaa sidoo kale soo sheegay daroogooyinka xadgudubka ah ee beddelaya balaastikada synaptik ee gobollada muhiimka ah ee maskaxda ee ku lug leh qabatinka maandooriyaha (dib u eegis, eeg (Winder) et al, 2002; Kauer iyo Malenka, 2007; Luscher iyo Bellone, 2008; Thomas et al., 2008). Inta badan neuroadaptations lagu tilmaamay waxay ku sugnaayeen gobollada nidaamka mesocorticolimbic iyo amygdala la fidiyay (Grueter). et al, 2006; Schramm-Sapyta et al, 2006; Kauer iyo Malenka, 2007; Kalivas et al., 2009; Koob iyo Volkow, 2010; Ruush et al., 2010; Mameli et al, 2011). Iyada oo ku saleysan doorarka la yaqaan ee gobolladan ee habaynta niyadda, habaynta abaal-marinnada dabiiciga ah, iyo hab-dhaqanka dhiirigeliyay, waxaa si weyn loo rumeysan yahay in caaggani uu hoosta ka xarriiqo isbeddellada xun-xun ee hab-dhaqanka la xidhiidha balwadda. Bini'aadamka, qaar ka mid ah isbeddelladan waxaa ka mid ah go'aan qaadashada daciifka ah, hoos u dhac ku yimaada abaalmarinta dabiiciga ah (anhedonia), iyo rabitaan (Majewska, 1996; Bechara, 2005; O'Brien, 2005). Noocyada xayawaanka, dabeecadahan la beddelay waxaa lagu baran karaa tallaabooyinka habdhaqanka neerfaha ka dib taariikhda maamulka daroogada, iyo gobollada maskaxda ee isku midka ah ayaa loo maleynayaa inay dhexdhexaadinayaan tallaabooyinkan (Markou iyo Koob, 1991; Shaham et al, 2003; Bevins iyo Besheer, 2005; Winstanley, 2007). Tallaabooyinkani waxay saldhig u yihiin baaritaanka hore ee daawaynta farmashiyaha kuwaas oo laga yaabo inay waxtar u yeeshaan daawaynta balwadda.

Caddaynta dhow waxay soo jeedinaysaa in qabatinka aan daroogada ahayn ay u horseedi karaan neuroadaptations la mid ah kuwa lagu soo warramey isticmaalka mukhaadaraadka muddada dheer. Iyadoo inta badan tusaalooyinkan caagga ah ay ka soo baxayaan daraasaadka xayawaanka, warbixinnada sidoo kale waxaa ku jira tusaalooyin laga soo qaatay daraasaadka aadanaha. Dib-u-eegisgan, waxaanu ku sahamin doonaa fikradda ah in abaal-marinaha dabiiciga ahi ay awood u leeyihiin inay keenaan caagaga neerfaha iyo hab-dhaqanka siyaalo la mid ah qabatinka maandooriyaha. Daraasadda mustaqbalka ee dhacdadani waxay ina siin kartaa fikrado ku saabsan qabatinka dabeecadda iyo kor u qaadida daawooyinka dawooyinka "crossover" ee ka faa'iideysan kara daroogada iyo kuwa aan daroogada ahayn labadaba (Frascella). et al., 2010).

1.1. Fikradaha xirmooyinka dabeecadda iyo takoorka

Dhanka laqabsiga maandooriyaha, aragtiyo dhowr ah ayaa soo baxay si ay u sharxaan sida caagnimada neerfaha iyo habdhaqanka ay gacan uga geystaan ​​balwadda. Hal aragti ayaa ah dareenka dhiirigelinta (Robinson iyo Berridge, 1993, 2001, 2008). Marka loo eego aragtidan, shakhsiyaadka u nugul, soo-gaadhista daroogada ee soo noqnoqda waxay keentaa dareen (dulqaad celin) sifooyinka dhiirigelinta-dhiirigelinta ee daroogooyinka iyo tilmaamaha la xiriira daroogada. Beddelkan waxaa ugu yaraan qayb ka mid ah dhexdhexaadinayey nucleus accumens (NAc) dopamine (DA) oo la sii daayo ka dib soo-gaadhista tilmaamaha la xiriira daroogada. Dabeecad ahaan, tani waxay la xiriirtaa rabitaanka iyo rabitaanka daroogada oo korodhay marka qofku la kulmo tilmaamo la xidhiidha qaadashada (tusaale tuubo dillaacsan). Noocyada xayawaanka, dareenka dhiirigelinta waxaa lagu qaabayn karaa iyadoo la cabbirayo dabeecadaha daroogada doonista iyadoo laga jawaabayo tilmaamo lagu lammaaniyay maamulka daroogada (Robinson iyo Berridge, 2008). Dareenka lugaha waxay sidoo kale ku dhacdaa maamulka soo noqnoqda ee dhowr daroogo oo xadgudub ah waxaana laga yaabaa inay noqoto qiyaas aan toos ahayn oo dhiirigelin ah, in kasta oo dareen-celinta iyo dhiirigelinta ay yihiin habab kala qaybsanaan ah (Robinson iyo Berridge, 2008). Waxaa xusid mudan, hababka wacyigelintu waxay sidoo kale turjumi karaan inta u dhaxaysa abaal-marinnada daroogada iyo kuwa aan dawada ahayn (Fiorino iyo Phillips, 1999; Avena iyo Hoebel, 2003b; Robinson iyo Berridge, 2008). Bini'aadamka, doorka calaamadaha dopamine ee hababka dhiirigelinta-xasaasinta ayaa dhawaan lagu muujiyay fiirsashada cudurka dopamine dysregulation syndrome ee bukaannada qaarkood ee qaadanaya daawooyinka dopaminergic. Cudurkaan waxaa lagu gartaa kororka daawada ay keentay (ama qasabka ah) ee ku lug lahaanshaha abaal-marin aan daroogo ahayn sida khamaarka, dukaamaysiga, ama galmada (Evans). et al, 2006; Aiken, 2007; Lader, 2008).

Aragti kale oo la sameeyay si loo sharaxo sida caag-ku-xirnaanta daroogada ay gacan uga geysato qabatinka waa aragtida habka ka soo horjeeda (Solomon, 1980; Koob et al, 1989; Koob iyo Le Moal, 2008). Si kooban, aragtidan dhiirigelinta ayaa sheegaysa in ay jiraan laba habraac oo ku hawlan inta lagu jiro waayo-aragnimada soo noqnoqda: tan koowaad waxay ku lug leedahay dabeecad saameyn leh ama hedonic, habka labaad waa ka-noqosho saameyn leh ama hedonic (Solomon iyo Corbit, 1974). Tusaalaha uu bixiyay Sulaymaan ee la xidhiidha isticmaalka opiate, halkaas oo dulqaadku u kordhay saamaynta hedonic ee ba'an ka dib soo-gaadhista daroogada ee soo noqnoqda, iyo calaamado xun oo ka-noqosho ah ayaa soo bixi doona kuwaas oo sii dhiirigelin doona isticmaalka daroogada (xoojinta taban) (Solomon, 1980). Noocan hore ee aragtida waxaa markii hore loo sameeyay si uu u sharaxo dabeecadda lagu beddelay abaal-marinnada daroogada iyo kuwa aan dawada lahayn (dib u eegis, eeg (Solomon, 1980)). Balaadhinta aragtida habka ka soo horjeeda waa qaabka allostatic ee hababka dhiirigelinta maskaxda (Koob iyo Le Moal, 2001, 2008). Si kooban, qaabkani waxaa ka mid ah fikradaha iska soo horjeeda ee abaal-marinta iyo abaal-marinta ka-hortagga, halka kan dambe uu ku lug leeyahay guul-darrida dib-u-soo-celinta homeostatic point, taasoo keentay saameyn taban iyo hoos u dhigista abaalmarinta dabiiciga ah, taas oo kordhisa dhiirigelinta si loo yareeyo gobolkan (Koob iyo Le). Moal, 2008). Caddaynta neuroplasticity ee nidaamisa xaaladdan isbeddelka leh waxay ka timaaddaa natiijooyin dhowr ah, oo ay ku jiraan hoos u dhaca basal NAc DA ka dib ka bixitaanka daroogada ee jiirka (Weiss). et al, 1992), hoos u dhac ku yimid xayndaabyada D2 ee striatum iyo ururinta khamriga bini'aadamka iyo balwadaha heroin-ka ee ka caaggan (Volkow). al et., 2004; Zijlstra et al, 2008), iyo korodhka is-kicinta intracranial (ICSS) inta lagu jiro ka-noqoshada kookeynta ee jiirka (Markou iyo Koob, 1991). Marka lagu daro isbeddelada calaamadaha mesolimbic DA, nidaamyada cadaadiska dhexe ayaa sidoo kale la shaqaaleysiiyay. Tusaalaha ugu adag ayaa ah kordhinta calaamadaha CRF ee hypothalamus, xudunta dhexe ee amygdala, iyo xudunta sariirta ee terminaalka stria ka dib markii laga saaray daroogo badan oo xadgudub ah (Koob iyo Le Moal, 2008).

Aragti saddexaad oo lagu qeexo neuroplasticity ka qaybqaata qabatinka waa qoritaanka neurocircuitry ku salaysan caado inta lagu jiro soo-gaadhista daroogada soo noqnoqda (Everitt). et al, 2001; Everitt et al, 2008; Graybiel, 2008; Ostlund iyo Balleine, 2008; Pierce iyo Vanderschuren, 2010). Tusaale ahaan, kuwa aan bini-aadmiga ahayn ee iskood u maamula kookeynta waxay muujinayaan isbeddelada dheef-shiid kiimikaadka gulukooska iyo heerarka dopamine D2 receptor iyo dopamine transporter kuwaas oo markii hore saameeya marinka ventral striatum, laakiin kororka soo-gaadhista ayaa ku fidaya marinka dhabarka (Porrino). et al, 2004a; Porrino et al, 2004b). Ballaarintan "waxay soo jeedinaysaa in walxaha habdhaqanka dabeecadda ee ka baxsan saameynta kookeynta ay noqdaan kuwo yaryar oo yareeya iyada oo la kordhinayo muddada korodhka isticmaalka daroogada taasoo keentay awoodda kookeynta ee dhammaan dhinacyada nolosha" (Porrino) al et., 2004a). Balaastigan horumarka leh ee min ventral ilaa dorsal striatum wuxuu barbar socdaa suugaan hore oo ku saabsan ka gudubka yool-u-barasho ku salaysan caado (Balleine iyo Dickinson, 1998) oo waxay leedahay isku xidhka anatomical ee taageera awooda barashada abaal-marinta ku saleysan dhinacyada striatum (Haber et al, 2000).

Tag:

2. Abaalmarinta Cuntada

Waxaa laga yaabaa in abaalmarinta ugu badan ee la bartay ay tahay tan cuntada. Cuntadu waa abaalmarinta muhiimka ah ee daraasado badan oo jiirka ah waxaana loo adeegsaday xoojiye habraacyo ay ka mid yihiin hawl-wadeennada (is-maamulka) hawlaha, imtixaannada dhabbaha dayuuradaha, barashada maska, hawlaha khamaarka, iyo qaboojinta goobta (Skinner, 1930; Ettenberg iyo Camp, 1986) ; Kandel et al, 2000; Kelley, 2004; Tzschenke, 2007; Zeeb et al, 2009). Jiirarka loo tababaray inay riixaan kabaal si ay u helaan is-maamulka xididka ee daroogada, cuntooyinka aadka loo jecel yahay sida sonkorta iyo saccharin ayaa la muujiyay inay yareeyaan is-maamulka kookeynta iyo heroin-ka (Carroll et al, 1989; Lenoir iyo Ahmed, 2008), iyo xoojiyayaashan dabiiciga ah ayaa la soo bandhigay si ay uga adkaadaan kookeynta doorashada is-maamulka inta badan jiirka la tijaabiyay (Lenoir et al, 2007; Cantin et al, 2010). Tani waxay soo jeedinaysaa in cuntooyinka macaanku ay leeyihiin qiimo xoojin ka sarreeya kookeynta, xitaa xayawaanka leh taariikh ballaadhan oo qaadashada daroogada (Cantin). al et., 2010). Iyadoo dhacdadani ay u muuqan karto daciifnimo moodooyinka hadda jira ee qabatinka kookeynta, tiro yar oo jiir ah ayaa doorbidaya kookeynta sonkorta ama saccharin (Cantin). al et., 2010). Waxaa suurtogal ah in xayawaankani ay matalaan dad " nugul", taas oo aad ugu habboon xaaladda bini'aadamka. Fikradan ayaa si badan loogu baadhay Wada-hadalka (Qaybta 6.1).

Shaqada shaybaarro badan ayaa soo bandhigtay tusaalooyin caag ah wareegyada abaal-marinnada la xiriira ka dib helitaanka cunnada macaan. La qabsiga habdhaqanka neerfaha ee ka dambeeya taariikhda qaadashada cunnada macaan ayaa la mid ah kuwa la arkay ka dib daroogooyinka xadgudubka, taasoo ku kaliftay dhowr saynisyahano inay soo jeediyaan in nidaam-darrada qaadashada cuntada ay la mid tahay balwadda (Hoebel). et al, 1989; Le Magnen, 1990; Wang al et., 2004b; Volkow iyo Wise, 2005; Davis iyo Carter, 2009; Nayr et al, 2009a; Corsica iyo Pelchat, 2010). Shaybaadhka Bartley Hoebel waxa uu leeyahay xog balaadhan oo muujinaysa caagagga dabeecadda ka dib taariikhda gelitaanka sonkorta ee joogtada ah, taas oo u horseeday isaga iyo asxaabtiisa inay soo jeediyaan isticmaalka sonkorta oo buuxiya shuruudaha qabatinka (Avena) et al, 2008). Fikradan waxaa taageeray xaqiiqda ah in dhowr tusaale oo caag ah oo la arkay ka dib soo-gaadhista daroogada ee soo noqnoqota ayaa sidoo kale la arkay ka dib markii si isdaba-joog ah loo helo sonkor keliya, laakiin sidoo kale baruurta. Noocyada kala duwan ee cuntada la dhadhami karo ayaa loo isticmaalay in lagu barto caagagga, oo ay ku jiraan sonkorta sare, dufanka badan, iyo cuntooyinka "Western" ama "Cafeteria" si ay isugu dayaan in ay u qaabeeyaan qaababka cunto cunida ee kala duwan.

Inta lagu jiro helitaanka sokorta ee soo noqnoqda, kor u kaca qaadashada ayaa la arkay (Colantuoni et al, 2001), dhacdo hore ula xidhiidha is-maamulka cocaine iyo heroin (Axmed iyo Koob, 1998; Roberts et al, 2007). Kordhinta waa korodhka qaadashada ee dhacda inta lagu jiro marxaladda hore (tusaale saacadda ugu horreysa ee fadhiga lix saacadood) ee is-maamulka ka dib taariikhda kalfadhiyada soo noqnoqda, ifafaale loo maleynayo in lagu ekaysiiyo qaababka bani'aadamka ee qaadashada daroogada (Koob iyo Kreek, 2007 ). Ka dib ka saarista sonkorta ama gelitaanka baruurta, calaamadaha ka-noqoshada oo ay ku jiraan walwalka-iyo dabeecadaha niyad-jabka ayaa soo baxaya (Colantuoni et al, 2002; Teegarden iyo Bale, 2007). Ka dib muddadan "ka fogaanshaha", baaritaanka hawl-wadeenku wuxuu muujinayaa "rabitaanka" iyo "raadinta" dabeecadda sonkorta (Avena et al, 2005) ama buuran (Ward et al, 2007), iyo sidoo kale "ku biirista damaca" (Grimm et al, 2001; Lu et al, 2004; Grimm et al, 2005), iyo "dib u noqosho" (Nair et al, 2009b) ka dib marka laga reebo sonkorta. Dhab ahaantii, marka la siiyo dib-u-soo-bandhigidda sonkorta ka dib muddada ka-hortagga, xayawaanku waxay cunaan xaddi aad u badan oo sonkor ah marka loo eego kulamadii hore (Avena). al et., 2005). Saamayntan diidmada ah waxaa markii hore lagu sifeeyay aalkolada (Sinclair iyo Senter, 1968), waxaana loo maleynayaa inay tahay nooc kale oo caafimaad oo hami iyo soo noqoshada (McBride iyo Li, 1998; Spanagel iyo Holter, 1999). Ugu dambeyntii, ka dib soo-gaadhista joogtada ah ee cunto dufan badan leh, cunto-raadinta waa la sii waday in kasta oo cawaaqib xumo (Teegarden iyo Bale, 2007; Johnson iyo Kenny, 2010), taas oo loo soo jeediyay inay noqoto mid xayawaan ah si ay u helaan khatarta ah daroogooyinka lagu arkay dadka caadaystay. (Deroche-Gamonet et al, 2004).

Calaamad kale oo caag ah oo ay keentay cuntadu waa in "dareen-celinta" ee dhaqdhaqaaqa lugaha ee u dhexeeya qaadashada sonkorta ee joogtada ah iyo kiciyeyaasha nafsaaniga ah ayaa lagu kicin karaa habka daaweynta (Avena iyo Hoebel, 2003b, a; Gosnell, 2005). Dareen-celintu waa dhacdo dhacda ka dib la-soo-gaadhis hore oo deegaanka ama wakiilka dawooyinka (sida stress-ka ama maskax-kicinta, siday u kala horreeyaan) taasoo keenta jawaab celin la xoojiyey (sida caadiga ah locomotor) wakiil deegaan ama dawooyin ka duwan (Antelman). et al, 1980; O'Donnell iyo Miczek, 1980; Kalivas et al, 1986; Vezina et al, 1989). Nidaamyada dareenka ee ku lug leh kiciyeyaasha nafsaaniga ah waxay ku lug leeyihiin mesolimbic DA neurons, iyo dareenka isdhaafka ah ayaa la rumeysan yahay inay ka dhacaan hababka ficilka ee u dhexeeya laba kicin (Antelman). al et., 1980; Herman et al, 1984; Kalivas iyo Stewart, 1991; Self iyo Nestler, 1995). Dareenka-is-dhaafsiga ee dawooyinka nafsiga ah ayaa sidoo kale lagu arkaa xayawaanka lagu quudiyo cunto sonkor/baruur sare leh inta lagu jiro xilliga dhalmada iyo ka dib naaska naaska (Shalev et al, 2010). Si loo go'aamiyo haddii soo-gaadhista cunto dufan badan ay bedeli karto "abaalmarinta" (xoojinta) saamaynta daroogada xadgudubka, Davis et al. Xayawaanka la tijaabiyey waxay quudiyeen cunto dufan badan leh si ay u beddelaan dareenka amphetamine iyagoo isticmaalaya doorbidid shuruudaysan (CPP) jaantus (Davis) et al, 2008). Qaabkan, xayawaanka ayaa marka hore loo oggol yahay inay sahamiyaan qalab qolal badan leh (tijaabada hore) halkaasoo qol kastaa leeyahay tilmaamo muuqaal, taabasho, iyo/ama ur ah oo kala duwan. Inta lagu jiro kalfadhiyada qaboojinta, xayawaanku waxay ku xidhan yihiin mid ka mid ah qolalka waxaana lagu lammaaniyaa abaal-marin (sida cirbadeynta amphetamine ama cuntada qolka). Kalfadhiyadan waa lagu soo noqnoqda oo waxaa dhexda u gala fadhi qaboojiye kuwaaso ku lug leh lamaanaynta qol kale oo qalabka ah oo leh xaaladda xakamaynta (tusaale duritaan milix ah ama cunto la'aan). Marxaladda tijaabada waxaa lagu sameeyaa isla shuruudo la mid ah kii hore ee tijaabada iyo CPP ayaa la soo bandhigay marka xayawaanku muujiyaan door muhiim ah qolka lagu lammaaniyay abaalmarinta daroogada ama aan daroogada ahayn. Davis iyo al. Waxaa la ogaaday in jiirka dufanka badan la quudiyo uu ku guuldareystay inuu horumariyo doorbidida booska amphetamine, isagoo soo jeedinaya dulqaad ka dhexeeya qaadashada cuntada dufanka badan iyo saameynta xoojinta xaalada amphetamine (Davis) al et., 2008).

Ka bixitaanku waa dhacdo sidoo kale la arko ka dib soo-gaadhista soo noqnoqda ee cuntooyinka aadka u macaan. Calaamadaha somatic ee ka-noqoshada sida caadiga ah ee la xidhiidha naloxone deg-degga opiate-ka-noqoshada waxa sidoo kale soo dajin kara naloxone ama xaddidaadda cuntada ka dib sonkorta kala go'a (Colantuoni) al et., 2002) ama qaabka cuntada kafateeriyada (Le Magnen, 1990). Heerarka sare ee abaalmarinta kicinta maskaxda, kuwaas oo inta badan lagu arko ka dib marka laga baxo kookeynta, khamriga, amphetamine, iyo nicotine (Simpson iyo Annau, 1977; Cassens et al, 1981; Markou iyo Koob, 1991; Schulteis et al, 1995; Xikmad iyo Munn, 1995; Epping-Jordan et al, 1998; Rylkova et al, 2009), waxaa lagu arkay jiirka ka dib 40 maalmood helitaanka cuntada kafateeriyada marka lagu daro chow caadiga ah, saamayntani waxay sii socotay ugu yaraan 14 maalmood ka dib markii laga baxay cuntada dufanka badan (Johnson iyo Kenny, 2010). Cabbirkan waxaa caadi ahaan loo isticmaalay in lagu qeexo xaalad anhedonia qaraabo ah oo lagu garto codka hoose ee nidaamyada abaal-marinta maskaxda ee endogenous (Kenny, 2007; Wise, 2008; Bruijnzeel, 2009; Carlezon iyo Thomas, 2009) waxaana loo maleynayaa inay nidaaminayso sii wadida qaadashada daroogada (iyo laga yaabee cunto) si loo nafiso xaaladdan (dhacdo loo yaqaan xoojinta taban) (Cottone et al, 2008; Koob, 2010).

Marka laga soo tago caagagga dabeecadda, qaadashada xad-dhaafka ah ee noocyada cuntada qaarkood ayaa sidoo kale lala xiriiriyay caagga neurochemical. Gaar ahaan, calaamadaha dopamine iyo opioid waxay u muuqdaan inay u nugul yihiin la qabsiga ka dib helitaanka kala go'a ee sonkorta sare ama cuntooyinka dufanka badan. Gudaha NAc, qaybaha quudinta kala-guurka ah ee marin u helka sonkorta iyo chow waxay kordhisaa D1 iyo D3 maadada soo dhawaynta (ama mRNA ama borotiinka), halka ay hoos u dhigayso soo-qabayaasha D2 ee NAc iyo dorsal striatum (Colantuoni). et al., 2001; Bello et al, 2002; Spangler et al, 2004). Saamayntan ayaa sidoo kale lagu arkay helitaan dheeri ah oo lagu helo cunto dufan badan oo jiirka ah, iyadoo hoos u dhaca ugu weyn ee D2 uu ku dhacay jiirka ugu culus (Johnson iyo Kenny, 2010). Laqabsigan ku jira daaweeyayaasha accumbal iyo striatal dopamine waxay barbar socdaan kuwa lagu arko jiirka oo si isdaba joog ah u maamula kookayn ama morphine (Alburges). et al, 1993; Unterwald et al, 1994a; Spangler et al, 2003; Conrad et al, 2010). Intaa waxaa dheer, hoos u dhac ku yimaada daaweeyayaasha D2 ee loo yaqaan 'striatal DXNUMX reseptors' ayaa sidoo kale lagu arkay isticmaalayaasha nafsiga ah ee bini'aadamka iyo khamriga (Volkow) et al, 1990; Volkow et al, 1993; Volkow et al, 1996; Zijlstra et al., 2008), iyo dadka waaweyn ee cayilan, halkaas oo maadada D2 lagu ogaaday inay si xun ula xiriirto index mass body (Wang et al., 2004b). Calaamadeynta opioid endogenous ayaa sidoo kale si qotodheer u saamaysay cuntada (Gosnell iyo Levine, 2009). Sonkorta joogtada ah ama cuntada macaan / dufanka leh waxay kordhisaa soo-dhoweeyaha mu opioid ee ku xidhan NAc, kortex cingulate, hippocampus iyo locus coeruleus (Colantuoni) et al., 2001) oo waxay hoos u dhigtaa enkephalin mRNA gudaha NAc (Kelley et al, 2003; Spangler et al., 2004). Plasticity neurochemical ee mesolimbic DA iyo calaamadaynta opioid ayaa sidoo kale lagu muujiyay inay ku dhacdo faraca jiirarka dheddigga ah ee quudiya cunto dufan badan inta lagu jiro uurka (Vucetic). et al, 2010). Farcankani waxay leeyihiin kor u qaadida dopamine-ka qaada (DAT) ee aagga ventral tegmental (VTA), NAc, iyo prefrontal cortex (PFC), iyo kor u kaca preproenkephalin iyo mu opioid receptors ee NAc iyo PFC (Vucetic). et al., 2010). Waxa xiisaha lihi leh, isbeddelladani waxay la xidhiidhaan wax ka beddelka epigenetic (hypomethylation) ee walxaha dhiirrigeliya ee dhammaan borotiinada ay saameeyeen.

Saamaynta nidaamka corticotropin-sii-deynta (CRF) ee cuntooyinka dufanka sare leh / sonkorta sare waxay sidoo kale xasuusinayaan kuwa ay bixiyaan daroogooyinka xadgudubka. CRF gudaha amygdala ayaa la kordhiyey ka dib markii 24 saacadood laga baxay cunto dufan badan leh, halka xayawaanka lagu ilaaliyo cuntadan ay lahaayeen amygdala CRF (Teegarden iyo Bale, 2007). Moodooyinka saxda ah, calaamadinta CRF ee la beddelay ayaa loo maleynayaa inay hoosta ka xariiqayso hababka xoojinta xun iyo kordhinta qaadashada ethanol ee "binge" (Koob, 2010). Natiijo ahaan, antagonistayaasha CRF ayaa loo soo jeediyay daawaynta khamriga iyo qabatinka maandooriyaha (Sarnyai). et al, 2001; Koob et al, 2009; Lowery iyo Thiele, 2010). Iyadoo lagu saleynayo xogtan, CRF antagonists ayaa sidoo kale laga yaabaa in la filayo inay caawiyaan shakhsiyaadka inay ka fogaadaan cuntooyinka dufanka badan/sonkorta sare leh inta lagu jiro u gudubka cunto caafimaad leh.

Qodobbada qoraalka waa nooc kale oo unugyo ah oo ku lug leh dhexdhexaadinta saameynta joogtada ah ee daroogada xadgudubka iyadoo si toos ah u saameyneysa muujinta hidda-wadaha (McClung iyo Nestler, 2008). Iyada oo la taageerayo fikradda ah in cuntadu ay awood u leedahay in ay keento caagaga neerfaha, dhowr arrimood oo qoraal ah ayaa sidoo kale lagu beddelaa cuntada. NAc phospho-CREB waa la dhimay 24 saacadood ka dib markii laga baxay cunto karbohaydrayt sare leh iyo labadaba saacadaha 24 iyo 1 ka dib ka bixitaanka cuntada dufanka badan, halka qodobka qoraalka delta FosB la kordhiyo inta lagu jiro helitaanka cunto dufan badan (Teegarden iyo Bale, 2007). ) ama sukrose (Wallace et al, 2008). Gudaha NAc, fosfo-CREB oo hoos u dhacday ayaa sidoo kale lagu arkaa xilliyada ka bixitaanka amphetamine iyo morphine (McDaid). et al, 2006a; McDaid et al, 2006b), iyo Delta FosB sidoo kale waa la kordhiyey ka dib markii laga saaro daawooyinkan iyo sidoo kale kookeynta, nicotine, ethanol, iyo phencyclidine (McClung) et al, 2004; McDaid et al., 2006a; McDaid et al., 2006b). Si la mid ah doorkooda la soo jeediyay ee kordhinta habdhaqanka raadinta daroogada, neuroadaptations-kan ayaa sidoo kale saameyn kara habdhaqanka quudinta ee soo socota, maadaama xad-dhaafka ah ee delta FosB ee marinka ventral striatum ay kordhiso dhiirigelinta helitaanka cuntada (Olausson) et al, 2006) iyo sukrose (Wallace et al., 2008).

Baaxadda loo yaqaan 'synaptic pseudo' ee wareegga xayawaanka la xiriira ee mukhadaraadka ayaa lala xiriiriyay in vivo maamulka daroogooyinka badan ee xadgudubka. Gudaha VTA, dhawr nooc oo ah kuwa la qabatimo, laakiin aan ahayn dawooyinka nafsiga ah ee aan la qabatimayn ayaa keena balaastiga synaptik (Saal et al, 2003; Stuber et al, 2008a; Wanat et al, 2009a). Ilaa hadda, waxaa jira xog aad u yar oo si toos ah u cabbiraysa saamaynta cuntada ee balaastigga synaptika ee neurocircuitry-ku-xidhan qabatinka. Barashada shaqada ee la xiriirta cuntada (chow ama pellets sukrose) waxay kordhisay saamiga AMPA/NMDA ee aagga ventral tegmental ilaa toddoba maalmood ka dib tababarka (Chen). et al, 2008a). Marka kookeynta iskeed isu maamusho, saameyntu waxay socotay ilaa saddex bilood, saameyntan laguma arag maamulka tooska ah ee kookeynta (Chen). et al., 2008a). Inta jeer ee ugu yar ee EPSP ee VTA ayaa sidoo kale la kordhiyey ilaa saddex bilood ka dib is-maamulka kookeynta, iyo ilaa saddex toddobaad ka dib is-maamulka sukrose (laakiin aan ahayn chow), taas oo soo jeedinaysa in calaamadaha glutamatergic la xoojiyay ka hor iyo ka dibba (Chen). et al., 2008a).

Xogtaasi waxay soo jeedinaysaa in qaar ka mid ah cabbirada balaastikada synaptik ee nidaamka mesolimbic (tusaale AMPA/NMDA saamiga) laga yaabo inay la xiriirto barashada rabitaanka cuntada guud ahaan. Tan waxaa taageeraya xaqiiqda ah in barashada Pavlovian ee la xiriirta abaalmarinta cuntada ay dabooltay VTA LTP inta lagu jiro iibsiga (maalinta 3 ee qaboojinta) (Stuber) et al, 2008b). Inkasta oo caddaynta balaastigga la arkay maalintii 3, way maqnaatay laba maalmood ka dib, taas oo soo jeedinaysa in is-maamulku si cad u horseedayo balaastig waara oo wareegyadan ah (Stuber et al., 2008b). Tani waxay sidoo kale u muuqataa inay tahay kiiska balaastigga ee la xidhiidha is-maamulka kookeynta, sida balaastigga kookayn-ku-soo-celinta ee VTA sidoo kale waa mid gaaban (Borgland). et al, 2004; Chen et al., 2008a). Dabeecadda daraasaddan hawl-wadeenka ah, si kastaba ha ahaatee, ma dhimayso xaqiiqada ah in helitaanka cuntada la dheereeyey ay u horseedi karto balaastiigga synaptik ee sii raagaya. Inta lagu jiro daraasadaha qaboojinta qalliinka ee caadiga ah, xayawaanka waxaa loo oggol yahay inay helaan abaal-marin cunto aad uga yar marka loo eego xilliga quudinta bilaashka ah ama gelitaanka jadwalka ah. Daraasado mustaqbalka ah ayaa loo baahan doonaa in la sameeyo si loo go'aamiyo saamaynta helitaanka dheeriga ah ee helitaanka cuntada aadka loo jecel yahay ee balaastikada synaptik.

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3. Abaalmarinta Galmada

Galmadu waa abaal-marin, sida cuntada oo kale, muhiim u ah jiritaanka noolaha. Sida cunto iyo dhowr daroogo oo xadgudub ah, habdhaqanka galmadu waxa uu sare u qaadaa mesolimbic DA (Meisel et al, 1993; Mermelstein iyo Becker, 1995). Sidoo kale waa habdhaqan lagu cabbiray xoojinta qiimaha hawl-wadeenka (Beach and Jordan, 1956; Caggiula iyo Hoebel, 1966; Everitt et al, 1987; Crawford et al, 1993) iyo hababka qaboojinta (Paredes iyo Vazquez, 1999; Martinez iyo Paredes, 2001; Tzschentke, 2007). Mawduucyada bini'aadamka ee lagu daweynayo dhaqanka galmada qasabka ah (oo loo kala saaro "Cudurka Galmada Aan Haddii kale lagu cayimin" ee DSM-IV) waxay leeyihiin calaamado badan oo la xidhiidha qabatinka maandooriyaha, oo ay ku jiraan kor u kaca, ka-noqoshada, dhibka joojinta ama dhimista dhaqdhaqaaqa, iyo dabeecadda galmada sii socota inkasta oo ay xun tahay. cawaaqib (Orford, 1978; Dahab iyo Heffner, 1998; Garcia iyo Thibaut, 2010). Iyadoo la tixgelinayo laqabsigan habdhaqanka, waa macquul in la qiyaaso neuroadaptations muhiim ah oo ka dhacaya gudaha wareegga mesocorticolimbic. Sida lagu arkay soo-gaadhista sokorta ee soo noqnoqota, la kulanka galmo ee soo noqnoqda ee jiirarka ragga ah ayaa iskutallaabta dareen-siisay amphetamine-ka oo lagu baadho goobta (Pitchers) et al, 2010a). Kulamada galmo ee soo noqnoqda waxay sidoo kale kordhiyaan isticmaalka sukrose waxayna door bidaan qiyaasta yar ee amphetamine, iyagoo soo jeedinaya dareenka isdhaafka ah ee u dhexeeya khibrada galmada iyo abaalmarinta daroogada (Wallace et al., 2008; Pitchers et al, 2010b). Sidoo kale la mid ah saamaynta dareenka ee daroogooyinka xadgudubka (Segal iyo Mandell, 1974; Robinson iyo Becker, 1982; Robinson iyo Berridge, 2008), la kulanka galmada ee soo noqnoqda waxay dareensiisaa jawaabta NAc DA ee kulan dambe oo galmo ah (Kohlert iyo Meisel, 1999) . Dareen-celintu sidoo kale waa laba jiho, maadaama taariikhda maamulka amphetamine ay fududeyso habdhaqanka galmada oo ay wanaajiso kororka la xiriira NAc DA (Fiorino iyo Phillips, 1999).

Sida lagu sharraxay abaalmarinta cuntada, waayo-aragnimada galmadu waxay sidoo kale u horseedi kartaa firfircoonida calaamadaha calaamadaynta balaastigga ah. Qodobka qoraalka ee delta FosB wuxuu ku kordhay NAc, PFC, dorsal striatum, iyo VTA ka dib habdhaqan galmo oo soo noqnoqda (Wallace et al., 2008; Pitchers et al., 2010b). Korodhkan dabiiciga ah ee delta FosB ama fayraska xad-dhaafka ah ee delta FosB ee gudaha NAc ayaa wax ka beddeleysa waxqabadka galmada, iyo xannibaadda NAc ee delta FosB waxay hoos u dhigtaa dhaqankan (Hedges) et al, 2009; Pitchers et al., 2010b). Dheeraad ah, fayraska xad dhaafka ah ee delta FosB waxay wanaajisaa doorbidida booska shuruudaysan ee deegaan lagu lammaaniyo khibrad galmo (Hedges). et al., 2009). Dariiqa calaamadaynta MAP kinase waa waddo kale oo balaastikada la xiriirta oo ku hawlan inta lagu jiro khibrad galmo oo soo noqnoqota (Bradley) et al, 2005). Dumarka khibrada u leh galmada, kulanka galmadu wuxuu horseeday PERK2 sare oo NAc ah (Meisel iyo Mullins, 2006). Kordhinta NAc PERK waxaa keena dhowr daroogo oo xadgudub ah, laakiin maaha dawooyinka nafsiga ah ee aan la qabatimayn, taas oo soo jeedinaysa in firfircoonida NAc ERK ay la xiriirto caag la xidhiidha balwadda (Valjent). et al, 2004). Dheeraad ah, daraasad dhowaan la sameeyay ayaa lagu ogaaday in PERK ay sababtay dhaqdhaqaaqa galmo ee isla neurons ee NAc, amygdala basolateral, iyo kiliyaha hore ee cingulate kuwaas oo ay horay u dhaqaajisay methamphetamine (Frohmader) et al, 2010). Xulashadan gaarka ah waxay soo jeedinaysaa in kicinta cascade ee NAc iyo gobollada kale ee mesocorticolimbic ay si gaar ah u horseedi karaan caag kor u qaadaya dabeecadda rabitaanka mustaqbalka (Girault). et al, 2007).

Qaab dhismeedka neerfaha ee nidaamka mesocorticolimbic sidoo kale waa la beddelaa ka dib khibradda galmada. Pitchers iyo asxaabtooda ayaa dhawaan soo sheegay kororka dendrites iyo lafdhabarta dendritic ee NAc ee jiirka inta lagu jiro "ka-baxa" waayo-aragnimada galmada (Pitchers) et al., 2010a). Tani waxay sii ballaarinaysaa xogta kale ee muujinaysa in waayo-aragnimada galmadu ay beddeli karto morphology dendritic si la mid ah soo-gaadhista daroogada ee soo noqnoqda (Fiorino iyo Kolb, 2003; Robinson iyo Kolb, 2004; Meisel iyo Mullins, 2006).

Tag:

4. Abaalmarinta Abaalmarinta

Helitaanka giraanta orodka ee jimicsiga waxay u adeegtaa xoojiye jiirka shaybaadhka (Belke iyo Heyman, 1994; Belke iyo Dunlop, 1998; Lett et al, 2000). Sida daroogooyinka xadgudubka iyo abaal-marinnada kale ee dabiiciga ah, jimicsiga jiirka wuxuu la xiriiraa kororka DA calaamadeynta NAc iyo striatum (Freed iyo Yamamoto, 1985; Hattori et al, 1994). Jimicsigu wuxuu sidoo kale kor u qaadaa maskaxda iyo heerarka plasma ee opioids endogenous ee bini'aadamka iyo jiirka (Christie iyo Chesher, 1982; Janal et al, 1984; Schwarz iyo Kindermann, 1992; Asahina et al, 2003). Mid ka mid ah bartilmaameedka opioids-yadan waa mu opiate receptor, oo ah substrate ka mid ah daawooyinka opiate ee xadgudubka sida heroin iyo morphine. Isku dhafkan ayaa sidoo kale u muuqda inuu ku fidinaayo jawaabaha habdhaqanka ee daroogada xadgudubka. Si ka duwan abaal-marinnada dabiiciga ah ee laga wada hadlay ilaa hadda, cilmi-baadhisyada intooda badani waxay ogaadeen in soo-gaadhista jimicsiga ay hoos u dhigto saameynta daroogada xadgudubka. Tusaale ahaan, is-maamulida morphine, ethanol, iyo kookeynta dhamaantood waa la dhimay jimicsiga kadib (Cosgrove) et al, 2002; Smith et al, 2008; Ehringer et al, 2009; Hosseini et al, 2009). Khibrada jimicsiga waxay hoos u dhigtay CPP ilaa MDMA iyo kookeynta waxayna sidoo kale hoos u dhigtay kororka MDMA ee NAc DA (Chen). et al, 2008b; Thanos et al, 2010). Jimicsiga ka hor tababbarka is-maamulka ayaa sidoo kale awooday inuu yareeyo daroogada raadinta iyo dib u soo celinta, inkastoo daraasaddan is-maamulka kookeynta aysan saameyn ku yeelan (Zlebnik). et al, 2010). Daraasad la mid ah, raadinta kookeynta iyo dib u soo celinta tilmaanta ayaa lagu yareeyay jiirarka jimicsiga sameeyay intii lagu jiray muddada daroogada ka-hortagga (Lynch) et al, 2010). Xayawaanka leh taariikhda waayo-aragnimada orodka, ka-noqoshada helitaanka wheel waxay horseeddaa ka-noqoshada daroogada-calaamadaha oo kale oo ay ku jiraan, welwelka iyo gardarrada kordhay, iyo u nuglaanshaha ka-noqoshada degdegga ah ee naloxone (Hoffmann) et al, 1987; Kanarek et al, 2009).

Marka lagu daro jawaabaha habdhaqanka ee la beddelay ee daroogooyinka xadgudubka, waxaa jira caag neurochemical oo ay ka muuqato kororka dynorphin ee striatum iyo NAc ka dib orodka, dhacdo ayaa sidoo kale lagu arkay dadka maandooriyaha cocaine-ta ah iyo xayawaanka ka dib maamulka kookeynta ama ethanol (Lindholm). et al, 2000; Werme et al, 2000; Wee iyo Koob, 2010). Sidoo kale xasuusin dawada la xiriirta caagga neerfaha, qodobka transcription delta FosB waxaa lagu soo rogay NAc ee xayawaanka leh khibrad orodka taayirrada (Werme). et al, 2002). Isbeddelladani waxay hoosta ka xarriiqi karaan xaaladda "ka-noqoshada" ee la arkay ka dib markii laga saaray gelitaanka taayirrada orodka ee xayawaanka hore u geli jiray (Hoffmann et al., 1987; Kanarek et al., 2009). Taa bedelkeeda, jimicsiga inta lagu jiro joojinta daroogada ayaa sidoo kale la xiriirta hoos u dhigista dib-u-soo-celinta dib-u-soo-celinta ee ERK ee PFC (Lynch) et al., 2010). Tani waa helitaan gaar ah oo khuseeya iyadoo la tixgelinayo doorka ERK ee dhinacyo badan oo qabatinka (Valjent et al., 2004; Lu et al, 2006; Girault et al., 2007) iyo ogaanshaha in firfircoonida ERK ee gudaha PFC ay la xiriirto soo saarista rabitaanka daroogada (Koya) et al, 2009). Heerarka qallafsan ee soo-dhoweeyaha dopamine D2 ayaa sidoo kale la soo sheegay inay kordheen jimicsiga ka dib (MacRae et al, 1987; Foley iyo Fleshner, 2008), saamayn ka soo horjeeda taas la arkay ka dib is-maamulka nafsaaniga ah ee jiirka, primates, iyo aadanaha (Volkow) et al., 1990; Nader et al, 2002; Conrad et al., 2010). Waxaa suurtogal ah in laqabsigan uu gacan ka geysto "ilaalinta" saameynta jimicsiga ee ku saabsan ku xadgudubka maandooriyaha. Taageerada fikradan waxay ka timid daraasado hore loogu sheegay qaybtan oo muujinaya is-maamulka daroogada oo yaraaday, raadinta, iyo dib u soo celinta xayawaanka loo oggol yahay inay jimicsi sameeyaan. Waxa kale oo jirta taageero ah in jimicsigu uu "ka bixi karo" is-maamulka daroogada, maadaama orodka taayirrada uu yareynayo qaadashada amphetamine marka labada xoojiyayaasha la heli karo (Kanarek) et al, 1995).

Jimicsigu wuxuu sidoo kale saameyn ku leeyahay gudaha hippocampus, halkaas oo uu saameyn ku yeesho caagagga (oo ka tarjumaya LTP sare iyo barashada booska oo la hagaajiyay) wuxuuna kordhiyaa neurogenesis iyo muujinta hiddo-wadaha la xiriira balaastiga (Kanarek). et al., 1995; van Praag et al, 1999; Gomez-Pinilla et al, 2002; Molteni et al, 2002). Hoos u dhaca neurogenesis hippocampal ayaa lala xiriiriyay dabeecado niyad-jab leh oo daraasadaha hore ah (Duman). et al, 1999; Sahay iyo Hen, 2007), oo waafaqsan awoodda lagu kordhinayo neurogenesis hippocampal, jimicsiga ayaa lagu muujiyay inuu leeyahay saameyn liddi ku ah niyad-jabka ee xariiqda niyad-jabka ee jiirka (Bjornebekk) et al, 2006), iyo si loo hagaajiyo calaamadaha niyad-jabka ee bukaanada aadanaha (Ernst et al, 2006). Iyadoo la tixgelinayo xiriir dhawaan la soo sheegay oo u dhexeeya xakamaynta neurogenesis hippocampal iyo kordhinta qaadashada kookeynta iyo raadinta dabeecadaha jiirka (Noonan) et al, 2010) oo ay weheliso caddaymihii hore ee soo-gaadhista diiqada (daawaynta yaraynaysaa neurogenesis hippocampal), waxay kordhisaa qaadashada daroogada (Covington iyo Miczek, 2005), waxaa muhiim ah in la tixgeliyo saameynta jimicsiga ee shaqada hippocampal marka lagu daro kuwa ku jira shaqada mesolimbic. Sababtoo ah jimicsigu wuxuu u horseedaa caag labadaba wareegga wareegga la xiriira niyad-jabka (ie hippocampal) iyo wareegga la xiriira daroogada-raadinta (sida nidaamka mesolimbic), way adagtahay in la go'aamiyo meesha saxda ah ee saameynta "daawoyinka ka-hortagga" ee jimicsigu ka jiro.

Iyadoo la raacayo saameynta jimicsiga ee abaalmarinta daroogada, waxaa sidoo kale jira caddayn ah in orodku uu yarayn karo doorbidka xoojinta dabiiciga ah. Marka la eego xaaladaha helitaanka cunnada xaddidan, jiirarka si joogto ah u heli kara taayirrada ordaya waxay dhab ahaantii joojin doonaan inay cunaan ilaa heer dhimasho (Routtenberg iyo Kuznesof, 1967; Routtenberg, 1968). Dhacdadan aadka u ba'an ayaa la arkaa kaliya marka xilliyada helitaanka cuntadu ay dhacaan iyadoo la sii wado helitaanka wheel orodka, inkastoo laga yaabo inay soo jeediso in soo-gaadhista jimicsiga ay yareyn karto dhiirigelinta hab guud oo loogu talagalay xoojinta daroogada iyo kuwa aan dawada ahayn. Tixgelinta kama dambaysta ah ee saamaynta jimicsiga ayaa ah in giraangiraha orodka ee lagu hayo qafiska xayawaanka uu u dhaqmi karo qaab kobcinta deegaanka. In kasta oo ay adag tahay in gebi ahaanba la kala saaro kobcinta deegaanka ee jimicsiga (EE xayawaanka guryaha ku jira ayaa jimicsi badan sameeya), saamaynta la kala saari karo EE iyo jimicsiga ayaa la soo sheegay (van Praag) et al., 1999; Olson et al, 2006).

Tag:

5. Horumarinta Cusbooneysiinta / Dareenka / Horumarinta Deegaanka

Kicinta cusub, kicinta dareenka, iyo bey'ada la kobciyay ayaa dhamaantood xoojiya xayawaanka, oo ay ku jiraan jiirka (Van de Weerd) et al, 1998; Besheer et al, 1999; Bevins iyo Bardo, 1999; Mellen iyo Sevenich MacPhee, 2001; Dommett et al, 2005; Qaabiil et al, 2006; Olsen iyo Winder, 2009). Deegaanka cusub, kicinta dareenka, iyo kobcinta deegaanka (EE) ayaa dhamaantood la muujiyay inay dhaqaajiyaan nidaamka mesolimbic DA (Chiodo) et al, 1980; Horvitz et al, 1997; Rebec et al, 1997a; Rebec et al, 1997b; Wood iyo Rebec, 2004; Dommett et al., 2005; Segovia et al, 2010), oo soo jeedinaya isku dhafka wareegga qabatinka. Dadka dhexdiisa, dareenka iyo raadinta cusub ayaa lala xiriiriyay u nuglaanshaha, qaadashada, iyo darnaanta xadgudubka daroogada (Cloninger, 1987; Kelly et al, 2006); dib u eegis, eeg (Zuckerman, 1986). Jiirka dhexdiisa, jawaabta wax cusub ayaa sidoo kale lala xiriiriyay is-maamulka daroogada ee xiga (Piazza). et al, 1989; Qaabiil et al, 2005; Meyer et al, 2010), isagoo soo jeedinaya in labadan nooc ee phenotypes covary. Iyada oo ku saleysan kuwan iyo xogta neurochemical, waxaa loo maleynayaa inay isku dhafan yihiin wareegga mesocorticolimbic kaas oo hoosta ka xariiqay jawaabta cusub iyo daroogooyinka xadgudubka (Rebec). et al., 1997a; Rebec et al., 1997b; Bardo iyo Dwoskin, 2004). Dareenka kicinta (gaar ahaan aragga iyo kicinta maqalka) ayaa lagu bartay dhismahooda xoojinta (Marx et al, 1955; Stewart, 1960; Qaabiil et al., 2006; Liu et al, 2007; Olsen iyo Winder, 2010), waxaana dhawaan soo bandhignay ka qayb qaadashada calaamadaha dopaminergic iyo glutamatergic ee dhexdhexaadinta sifooyinka xoojinta dareenka kala duwan (Olsen iyo Winder, 2009; Olsen et al, 2010). Balaastiga ka dib soo-gaadhista gaarka ah ee cusub ama kicinta dareenka gudaha xuduudaha aan laga hortagi doonin waa xaddidan tahay, in kasta oo ay jirto caddayn ballaaran oo ku saabsan caagagga neerfaha ka dib firfircooni xooggan ama ka-qaadista hababka dareenka (Kaas, 1991; Rauschecker, 1999; Uhlrich et al, 2005; Smith et al, 2009). Si kastaba ha ahaatee, waxaa jira xog badan oo ku saabsan caagga neerfaha ee la xidhiidha guriyeynta jawi hodan ah (taas oo ay ku jiraan qaybaha mawduucyada kale ee laga hadlay, oo ay ku jiraan wax cusub iyo jimicsi; dib u eegis qoto dheer, fiiri (Kolb iyo Whishaw, 1998; van Praag) et al, 2000a; Nithianantharajah iyo Hannan, 2006)). Aragtida caanka ah ee Hebb ee wax-barashada waxa saamayn ku yeeshay natiijooyinkii uu helay ee muujinaya in jiirarka lagu hayo deegaan qani ah (gurigiisa) uu ka qabtay hawlaha waxbarashada si ka fiican marka loo eego kuwa qashinka ah ee lagu hayo shaybaadhka (Hebb, 1947). Daraasadihii xigay waxay aqoonsadeen isbeddello ba'an oo ku yimaada miisaanka maskaxda, angiogenesis, neurogenesis, gliogenesis, iyo qaab dhismeedka dendritic oo ka jawaabaya kobcinta deegaanka (EE) (Bennett) et al, 1969; Greenough iyo Chang, 1989; Kolb iyo Whishaw, 1998; van Praag et al, 2000b). Xog cusub oo dhowaan laga helay daraasaadka microarray-ga ayaa muujisay in guryaha EE ay kiciyaan muujinta hidda-wadaha cascades ee ku lug leh caag-ku-tiirsanaanta NMDA iyo ilaalinta neuroprotection (Rampon). et al, 2000). Isla kooxdu waxay ogaatay in soo-gaadhista deegaanka EE kaliya 3 saacadood (ie soo-gaadhista kicinta cusub) ay natiijooyin isku mid ah ka heleen, kordhinta muujinta hidda-wadaha ee waddooyinka la xidhiidha neuritogenesis iyo caagnimada (Rampon et al., 2000).

Sida abaalmarinta jimicsiga, sida isbeddelka guud balaastigga ay keentay EE waxay u muuqataa inay yarayso dareenka daroogada xadgudubka waxaana laga yaabaa inay bixiso "phenotype ilaalinta" ka dhanka ah qaadashada daroogada (Jaranjarada iyo Bardo, 2009; Thiel et al, 2009; Solinas et al, 2010; Thiel et al, 2011). Marka la barbar dhigo xayawaanka ku jira xaaladaha saboolka ah, EE waxay soo saartay isbeddel sax ah oo ku saabsan qalooca jawaab-celinta qiyaasta ee dhaqdhaqaaqa firfircoonida ee morphine, iyo sidoo kale morphine-iyo amphetamine-ku-dareen dareen-celinta lugaha (Bardo) et al, 1995; Bardo et al, 1997). Isbeddel la mid ah ayaa la arkay ka dib daaweynta nafsaaniga ah, halkaasoo EE ay hoos u dhigtay dhaqdhaqaaqa dhaqdhaqaaqa firfircoonida iyo saameynta dareenka ee nicotine iyo hoos u dhigista is-maamulka kookeynta iyo dabeecad raadinta (in kasta oo EE uu kordhay kookeynta CPP) (cagaaran). et al, 2003; Cagaaran et al, 2010). Waxa xiisaha lihi leh, EE uma horseedin kala duwanaansho NAc ama isku-darka DA ama isku xidhka mu opiate receptor ku xidha dhawr meelood mesocorticolimbic oo la baadhay (Bardo et al., 1997), in kasta oo Segovia iyo asxaabtiisuba ay heleen koror basal iyo K+-kicin NAC DA ka dib EE (Segovia et al., 2010). Gudaha PFC (laakiin maaha NAc ama striatum), jiirarka EE waxaa la ogaaday inay hoos u dhigeen awoodda gaadiidka dopamine (Zhu) et al, 2005). Tani waxay keentay kororka calaamadaynta prefrontal DA waxay saameyn kartaa dhaqdhaqaaqa mesolimbic, dareenka, iyo is-maamulka daroogada (Deutch, 1992; Olsen iyo Duvauchelle, 2001, 2006; Everitt et al., 2008; Del Arco iyo Mora, 2009). Shaqadii ugu dambaysay waxay aqoonsatay dhaqdhaqaaqa la dhimay ee CREB iyo BDNF oo hoos u dhacday NAc ka dib 30 maalmood EE marka loo eego jiirka saboolka ah (cagaaran). et al., 2010), in kasta oo heerarka NAc BDNF ay la mid yihiin inta u dhaxaysa EE iyo jiirka kantaroolka ka dib hal sano oo guriyeynta ah (Segovia et al., 2010). EE waxa kale oo ay saamaysaa dhaqdhaqaaqa qoraalka ee ay keentay daroogooyinka xadgudubka. Soo saarida hiddo-wadaha hore ee degdegga ah zif268 gudaha NAc ee kookeynta waa la dhimay, sida kookeynta ay keentay muujinta delta FosB ee marinka marinka (inkasta oo EE laftiisa la ogaaday inuu kor u qaadayo striatal delta FosB) (Solinas) et al, 2009). Saamayntan "ilaalinta" kaliya laguma arko goobta qabatinka. Heerka balaastigga ee EE ay keentay waa mid aad u weyn ilaa ay sii socoto daraasadda xagga ilaalinta iyo hagaajinta ka soo kabashada cudurro badan oo neerfaha (van Praag) et al., 2000a; Spiers iyo Hannan, 2005; Nithianantharajah iyo Hannan, 2006; Laviola et al, 2008; Lonetti et al, 2010), iyo warbixin dhawaan la soo saaray ayaa xitaa laga helay kororka hypothalamic-ku-tiirsan ee cafiska kansarka markii xoolaha lagu xareeyay EE (Cao). et al, 2010). Sida laga wada hadlay xagga jimicsiga, gabagabada ku saabsan saamaynta EE ee is-maamulka daroogada waa in la sameeyaa iyadoo la tixgelinayo saameynta ka hortagga niyad-jabka ee guryaha hodanka ah. Sida jimicsiga oo kale, EE ayaa la soo bandhigay inuu kordhiyo neurogenesis hippocampal (van Praag et al., 2000b) iyo in la yareeyo saamaynta niyad-jabka-sida ee walaaca jiirka (Laviola) et al., 2008).

Tag:

6. Wadahadal

Dadka qaarkiis, waxaa jira u gudubka "caadiga ah" una gudubta ka qaybgalka qasabka ah ee abaal-marinnada dabiiciga ah (sida cuntada ama galmada), xaalad ay qaar ku tilmaameen qabatinka dabeecadda ama aan daroogada ahayn (Holden, 2001; Grant) et al., 2006a). Sida cilmi-baarista ku saabsan qabatinka aan maandooriyaha ahayn ay sii socoto, aqoonta laga helay dhinacyada laqabsiga maandooriyaha, dhiirigelinta, iyo xanuunka waswaaska ah ayaa gacan ka geysan doona horumarinta xeeladaha daweynta ee balwadaha aan daroogada ahayn. Waxaa jira cadaymo caafimaad oo soo baxaya oo sheegaya in dawooyinka dawooyinka loo isticmaalo in lagu daweeyo qabatinka maandooriyaha ay noqon karaan hab guul leh oo lagu daweeyo balwadaha aan mukhaadaraadka ahayn. Tusaale ahaan, naltrexone, nalmefine, N-acetyl-cysteine, iyo modafanil ayaa dhamaantood lagu soo warramey inay yareeyaan hammiga khamaarayaasha cudurada (Kim). et al, 2001; Deeq et al, 2006b; Leung iyo Cottler, 2009). Iska horimaadyada opiate ayaa sidoo kale muujiyay ballanqaad daraasado yaryar oo ku saabsan daaweynta dabeecadaha galmada ee qasabka ah (Grant iyo Kim, 2001), iyo topirimate ayaa muujiyay guusha hoos u dhigista dhacdooyinka xad-dhaafka ah iyo miisaanka bukaanka cayilan ee qaba xanuunka cunista xad-dhaafka ah (McElroy). et al, 2007). Guusha daawayntan ee balwadaha aan daroogooyinka ahayn waxay sii soo jeedinaysaa inay jiraan substrates neural substrates oo u dhexeeya maandooriyaha iyo kuwa aan dawada ahayn.

Moodooyinka xayawaanka ee dabeecadda dhiirigelinta iyo qasabka ah ayaa sidoo kale kaa caawin doona bixinta aragtida hababka neerfaha ee ka hooseeya balwadaha aan daroogada ahayn (Potenza, 2009; Winstanley et al, 2010). Noocyada qaarkood ee qabatinka aan daroogada ahayn ayaa si sahlan loogu qaabeeyey jiirka marka loo eego kuwa kale. Tusaale ahaan, jaangooyooyinka isticmaalaya marin u helka cuntooyinka aadka loo dhadhami karo waxay siiyeen hannaan heersare ah oo loogu talagalay daraasadda u gudubka qaadashada cuntada khasabka ah ama xad-dhaafka ah. Moodooyinka jiirka ee isticmaalaya helitaanka dufan sare, sonkor badan, ama "qaabka kafateeriyada" waxay keenaysaa korodhka qaadashada kalooriga iyo korodhka miisaanka, qaybaha ugu muhiimsan ee buurnaanta aadanaha (Rothwell iyo Stock, 1979, 1984; Lin et al, 2000). Daaweyntani waxay kordhin kartaa dhiirigelinta mustaqbalka ee abaalmarinta cuntada (Wojnicki et al, 2006) oo u horseedaya isbeddel ku yimaada balaastikada neerfaha ee nidaamka dopamine mesolimbic (Hoebel) et al, 2009). Moodooyinka is-maamulka cuntadu waxay kaloo ogaadeen in tilmaamaha cunnada la xidhiidha iyo walaaca ay keeni karaan soo noqoshada cunto raadinta (Ward et al., 2007; Grimm et al, 2008; Nayr et al., 2009b), dhacdo sidoo kale lagu soo warramey dadka quudiya dadka (Drewnowski, 1997; Berthoud, 2004). Sidaa darteed, noocyada noocan ah waxay leeyihiin ansax dhisme sare leh waxaana laga yaabaa inay keenaan neuroadaptations kuwaas oo ina siinaya aragtida xaaladaha bini'aadamka sida qaadashada cuntada khasabka ah ama dib ugu noqoshada caadooyinka cunista xad-dhaafka ah ka dib isbeddel faa'iido leh oo cuntada ah.

Meel kale oo horumarka dhowaan laga sameeyay ayaa ahaa horumarinta moodooyinka jiirka ee khamaarka iyo doorashada khatarta ah (van den Bos et al, 2006; Rivalan et al, 2009; St Onge iyo Floresco, 2009; Zeeb et al., 2009; Jentsch et al, 2010). Daraasaduhu waxay muujiyeen in jiirarka ay awood u leeyihiin inay qabtaan hawsha khamaarka Iowa (IGT) (Rivalan). et al., 2009; Zeeb et al., 2009) iyo hawsha mashiinka booska (Winstanley et al, 2011). Mid ka mid ah daraasaddan ayaa lagu ogaaday in jiirarka si hoose ugu sameeyay IGT ay leeyihiin abaal-marin abaal-marin sare leh iyo qaadashada khatar sare (Rivalan). et al., 2009), oo la mid ah sifooyinka lala xiriiriyay khamaarka cudurada iyo qabatinka maandooriyaha ee bukaanka bini'aadamka (Cloninger, 1987; Zuckerman, 1991; Cunningham-Williams et al, 2005; Potenza, 2008). Isticmaalka moodooyinka jiirka, daraasaduhu waxay sidoo kale diiradda saarayaan hababka neerfaha ee ka hooseeya "drive to khamaarka" iyo horumarinta khamaarka cudurada kuwaas oo laga yaabo inay bixiyaan aragti ku saabsan horumarinta daawooyinka farmashiyaha ee khamaarka cudurada (Winstanley, 2011; Winstanley et al., 2011).

Daraasadaha farsamada ee isticmaalaya kicinta dareenka sida xoojinta ayaa helay isku-dhafka hababka molecular ee wax ka beddelaya is-maamulka xoojinta dareenka iyo daroogada xadgudubka (Olsen iyo Winder, 2009; Olsen et al., 2010). Iyadoo cilmi-baarista goobtan ay ku jirto bilawgeeda, kuwan iyo tijaabooyinka mustaqbalka waxay ku siin karaan aragti ku saabsan xeeladaha daaweynta ee suurtogalka ah ee daaweynta isticmaalka internetka ee qasabka ah ama ciyaaraha fiidiyowga.

Iyadoo kuwan iyo horumarrada kale ee moodooyinka hab-dhaqanku ay bilaabayaan inay na siiyaan aragti macquul ah oo ku saabsan hababka asaasiga ah ee aan daroogada ahayn, waxaa jira caqabado iyo xaddidaadyo dhowr ah marka la isku dayo in la qaabeeyo habdhaqankaas. Mid ka mid ah xaddidaadda ayaa ah in moodooyinka intooda badan, aysan jirin natiijo la taaban karo oo ka timid go'aan qaadashada xun ama ka qaybgalka xad-dhaafka ah ee dabeecadaha. Tusaale ahaan, hawlaha khamaarka jiirka waxay isticmaalaan abaal-marin yar ama dib u dhac kordhiya inta u dhaxaysa abaal-marinaha iyagoo ka jawaabaya go'aannada liita, laakiin xayawaanku khatar uma aha inuu waayo gurigiisa ka dib guul-darrooyin xiriir ah. Xaddidaad kale ayaa ah ka-qaybgalka xad-dhaafka ah ee dabeecadaha sida cuntada ama is-maamulka maandooriyaha ee xaaladaha shaybaadhka waxay noqon kartaa natiijada xayawaanka oo aan helin abaal-marin kale oo aan dawo ahayn (Ahmed, 2005). Xaaladdan gaarka ah ayaa la soo jeediyay in lagu daydo shakhsiyaadka khatarta u leh ee dadka (Ahmed, 2005), in kasta oo ay weli u taagan tahay digniinta noocyada daraasadaha.

Daraasadda joogtada ah ee xad-dhaafka ah, qasabka ah, ama waxqabadka xun ee cunista, khamaarka, iyo dabeecadaha kale ee aan daroogada ahayn waxay fure u noqon doontaa horumarinta fahamkeena balwadaha aan daroogada ahayn. Natiijooyinka daraasadaha saxda ah ee la adeegsanayo hababkan oo ay weheliso cilmi-baaris lagu sameeyay dadka bini'aadamka ayaa kor u qaadi doonta dawooyinka farmashiyaha "crossover" oo ka faa'iideysan kara daroogada iyo kuwa aan daroogada ahayn labadaba (Grant). et al., 2006a; Potenza, 2009; Frascella et al., 2010).

6.1 Su'aalaha Maqalka ah

Hal su'aal oo hadhsan ayaa ah in dad isku mid ah neurons-ka ay ka shaqeyaan daroogada iyo abaalmarinta dabiiciga ah. Iyadoo ay jirto caddayn ku filan oo ah inay jiraan isku-dhafan oo ka jira gobollada maskaxda ee ay saameeyeen abaalmarinta dabiiciga ah iyo daroogooyinka xadgudubka (Garavan) et al, 2000; Karaama et al, 2002; Caruurta et al, 2008), waxaa jira xog is khilaafsan oo ku saabsan isku-dhafka dadka neerfaha ee ay saameeyeen abaalmarinta dabiiciga ah iyo daroogooyinka. Duubabka halbeegga ah ee laga soo qaaday jiirka iyo kuwa aan bini'aadamka ahayn ee ventral ventral striatum waxay muujinayaan in dadyowga neerfayaasha kala duwan ay ku hawlan yihiin is-maamulka abaal-marinnada dabiiciga ah (cuntada, biyaha, iyo sukrose) vs. kokain ama ethanol, in kasta oo ay jirtay heer sare oo isku dhafan oo u dhexeeya abaal-marinno dabiici ah oo kala duwan oo lagu isticmaalay daraasaddan (Bowman et al, 1996; Carelli et al, 2000; Carelli, 2002; Robinson iyo Carelli, 2008). Waxa kale oo jira caddayn ah in daroogooyinka kala duwani ay ku lug leeyihiin isku-dhafka neerfaha ee nidaamka mesocorticolimbic. Duubista hal unug oo ka socota PFC medial iyo NAc ee jiirka iskood u maamula kookeynta ama heroin-ka ayaa shaaca ka qaaday in dadyowga kala duwan ee neerfayaasha ay si kala duwan ugu hawlanaayeen muddada la filayo iyo ka dib faleebo (Chang) et al, 1998). Farqiga u dhexeeya abaalmarinta dabiiciga ah iyo daroogada ma noqon karto mid dhammaystiran, si kastaba ha ahaatee, maadaama ay sidoo kale jirto caddayn liddi ku ah. Ka dib soo-gaadhista waqtiga ee methamphetamine iyo waayo-aragnimada galmada, waxaa jiray iskudhac weyn oo neurons-ka oo ay dhaqaajiyeen labadan abaal-marin ee NAc, kortex cingulate hore, iyo amygdala basolateral (Frohmader) et al., 2010). Markaa, qoritaanka dadka neerfaha ee daroogooyinka gaarka ah ee xadgudubka ayaa laga yaabaa inay la jaanqaadaan qaar ka mid ah abaal-marinnada dabiiciga ah, laakiin maaha kuwa kale. Daraasadaha mustaqbalka ee isticmaalaya baytari aad u dhammaystiran oo abaal-marin dabiici ah iyo daroogo ah ayaa loo baahan doonaa si arrintan wax looga qabto.

Su'aal kale oo soo baxda ayaa ah ilaa heerkee daraasadda habaynta abaalmarinta dabiiciga ah waxay naga caawin kartaa inaan fahamno maandooriyaha iyo balwadda aan ahayn. Cadaymihii dhawaa waxay soo jeedinayaan in soo-gaadhista qaar ka mid ah abaal-marinnada aan dawada ahayn ay keeni karto "ilaalin" abaal-marinnada daroogada. Tusaale ahaan, sonkorta iyo saccharin waxay yarayn karaan is-maamulka cocaine iyo heroin (Carroll et al., 1989; Lenoir iyo Ahmed, 2008), iyo xoojiyayaashan dabiiciga ah ayaa la soo bandhigay in ay ku guulaysteen kookeynta doorashada is-maamulka inta badan jiirka (Lenoir) et al., 2007; Cantin et al., 2010). Dib-u-eegis dib-u-eegis ah oo ku saabsan xayawaanka oo dhan daraasadaha, Cantin et al. ayaa sheegay in kaliya ~ 9% jiirku waxay door bidaan kookeynta saccharin. Suurtagalnimada xiisaha leh ayaa ah in qaybtan yar ee xayawaanku ay ka dhigan tahay dadweynaha u nugul "qabqabsiga". Daraasado isticmaalaya is-maamulka kookeynta waxay isku dayeen inay aqoonsadaan jiirka "la qabatimay" iyadoo la adeegsanayo shuruudaha wax laga beddelay si loogu qaabeeyo shuruudaha DSM-IV ee ku-tiirsanaanta daroogada (Deroche-Gamonet). et al., 2004; Belin et al, 2009; Kasanetz et al, 2010). Daraasadahaani waxay ogaadeen in qiyaastii ~ 17-20% xayawaanka iskood u maamula kookeynta ay buuxiyaan dhammaan saddexda shuruudood, halka qiyaasaha heerarka ku-tiirsanaanta kookeynta ee bini'aadamka ee hore loogu soo bandhigay daroogada ~ 5-15% (Anthony) et al, 1994; O'Brien iyo Anthony, 2005). Sidaa darteed, inta badan xoolaha sonkorta iyo saccharin waxay u muuqdaan inay ka xoog badan yihiin kookeynta. Su'aasha xiisaha weyn leh ayaa ah in xayawaanka tirada yar ee u hela xoojiye daroogada in la doorbido inay matalaan "dadka nugul" ee ku habboon daraasadda balwadda. Markaa, isbarbardhigga dookhyada xayawaanka shakhsi ahaaneed ee daroogada iyo abaal-marinnada dabiiciga ah waxay keeni kartaa aragti ku aaddan arrimaha nugul ee la xidhiidha balwadda maandooriyaha.

Su'aasha kama dambaysta ah ayaa ah in raadinta abaal-marinnada dabiiciga ahi ay kaa caawin karto ka hortagga ama daaweynta balwadda. Kobcinta deegaanka ayaa loo soo jeediyay labadaba ka-hortag iyo cabbir daawaynta balwadda maandooriyaha oo ku salaysan daraasado hore oo leh dawooyin badan oo xadgudub ah (Bardo et al, 2001; Deehan et al, 2007; Solinas et al, 2008; Solinas et al., 2010). Daraasadaha maxaabiista bini'aadamka waxay soo jeedinayaan in kobcinta deegaanka iyada oo la adeegsanayo "bulshooyinka daweynta" ay dhab ahaantii tahay ikhtiyaar daaweyn oo waxtar leh labadaba si loo yareeyo dembiyada mustaqbalka iyo xadgudubka mukhaadaraadka (Inciardi). et al, 2001; Butzin et al, 2005). Natiijooyinkani waa kuwo rajo leh oo waxay soo jeedinayaan in kobcinta deegaanku ay suurtogal tahay inay wanaajiso neuroadaptations ee la xidhiidha isticmaalka daroogada dabadheeraad ah. Si la mid ah kobcinta deegaanka, cilmi-baaris ayaa lagu ogaaday in jimicsigu uu yareeyo is-maamulka iyo ku noqoshada daroogada xadgudubka (Cosgrove). et al., 2002; Zlebnik et al., 2010). Waxa kale oo jira caddaymo muujinaya in natiijooyinkan saxda ah ay u turjumaan dadyowga bini'aadamka, maadaama jimicsigu uu yareeyo calaamadaha ka-noqoshada iyo soo noqoshada sigaar-cabista (Daniel) et al, 2006; Prochaska et al, 2008), iyo hal barnaamij oo soo kabasho daroogo ah ayaa lagu arkay guul ka qaybgalayaasha u tababara oo u tartamaya maaratoonka qayb ka ah barnaamijka (Butler, 2005).

Tag:

7. Gebogebada Hadalka

Waxaa jira isbarbaryaal badan oo u dhexeeya balwadaha aan daroogada ahayn iyo balwadaha, oo ay ku jiraan damaca, xakamaynta daciifka ah ee dabeecadda, dulqaadka, ka noqoshada, iyo heerarka sare ee soo noqoshada (Marks, 1990; Lejoyeux et al., 2000; Machadka Qaranka ee Xad-gudubka Daroogada (NIDA) ) iyo al., 2002; Potenza, 2006). Sida aan dib u eegay, waxaa jira cadaymo badan oo muujinaya in abaal-marinnada dabiiciga ahi ay awood u leeyihiin inay ku kiciyaan caagagga wareegyada la xiriira balwadda. Tani waa inaysan noqon wax la yaab leh, sida 1) daroogooyinka xadgudubku waxay sameeyaan ficillo maskaxeed oo la mid ah, inkastoo ay aad uga cad yihiin abaal-marinnada dabiiciga ah (Kelley iyo Berridge, 2002), iyo 2) waxay barteen ururada ka dhexeeya waxyaabaha sida cuntada ama galmada fursadaha iyo xaaladaha sare u qaadaya helitaanku waxay faa'iido u leeyihiin marka laga eego dhinaca badbaadada waana shaqo dabiici ah oo maskaxda ah (Alcock, 2005). Shakhsiyaadka qaarkood, caaggani waxa laga yaabaa inuu wax ku biiriyo xaalad ka-qaybgalka khasabka ah ee dabeecadaha u eg qabatinka maandooriyaha. Xog badan ayaa soo jeedinaysa in cunista, wax iibsiga, khamaarka, ciyaaraha fiidiyowga, iyo waqti ku qaadashada intarneedka ay yihiin dabeecado isu bedeli kara dabeecado qasab ah oo sii socda inkasta oo cawaaqib xun ay jirto (Young, 1998; Tejeiro Salguero iyo Moran, 2002; Davis iyo Carter, 2009; Garcia iyo Thibaut, 2010; Lejoyeux iyo Weinstein, 2010). Sida qabatinka maandooriyaha, waxaa jira xilli kala guur ah oo laga bilaabo dhexdhexaad ilaa isticmaalka qasabka ah (Grant et al., 2006a), in kasta oo ay adag tahay in la sawiro xariiq u dhexeeya "caadiga ah" iyo raacitaanka abaalmarinta. Mid ka mid ah habka suurtagalka ah ee lagu samayn karo farqigan waa in la tijaabiyo bukaannada iyadoo la adeegsanayo shuruudaha DSM ee ku tiirsanaanta walaxda. Isticmaalka habkan, warbixinnada ayaa la sameeyay in shuruudahan DSM la buuxin karo marka lagu dabaqo bukaanada sida qasabka ah u galmooda (Goodman, 1992), khamaarka (Potenza, 2006), isticmaalka internetka (Griffiths, 1998), iyo cunista (Ifland). et al, 2009). Marka la eego xaqiiqda ah in DSM-5 laga filayo inay ku jiraan qaybo dhexdhexaad ah iyo kuwo daran oo ku dhex jira "qabatinka iyo cilladaha la xidhiidha" (Ururka Cilmi-nafsiga ee Maraykanka, 2010), waxaa laga yaabaa inay u adeegto cilmi-baarayaasha qabatinka iyo daaweeyayaasha si fiican u tixgeliyo qabatinka sida cillad maskaxeed. Dhinacyada kale, nooca magac-u-yaalka ah ayaa gacan ka geystay kor u qaadista wacyiga in xanuunada sida autismka iyo khamriga uurjiifka ay leeyihiin heerar badan oo darnaan ah. Marka laga hadlayo qabatinka (daroogada ama aan daroogada ahayn), aqoonsiga calaamadaha xitaa ka hooseeya marinka "dhexdhexaad" ayaa laga yaabaa inay gacan ka geysato aqoonsiga shakhsiyaadka khatarta ku jira oo u ogolaato waxqabadyo waxtar leh. Daraasadaha mustaqbalka waxay sii wadi doonaan inay muujiyaan fikradaha ku saabsan sida raadinta abaal-marinnada dabiiciga ah ay u noqon karto mid khasab ah shakhsiyaadka qaarkood iyo sida ugu wanaagsan ee loo daaweeyo balwadaha aan daroogada ahayn.

Shaxda 1

Soo-koobnaansho Buufiyadeed Looga Baahan Yahay Ka Dib Soo-gaadhista Dawooyinka ama Iskuduwaha Dabiiciga ah.

Nooca xoojinta
opiatesDaawooyinka nafsiga ahCunto Dufan/Sokor BadanSexLayliga/EE/Xoojinta Dareenkatixraacyada
Caaga Dhaqanka
 Kordhinta qaadashada(Colantuoni al et., 2001; Koob iyo Kreek, 2007; Clark et al, 2010)
 Saamaynta ka-noqoshada(Aghajaniyaan, 1978; Christie iyo Chesher, 1982; Markou iyo Koob, 1991; Colantuoni al et., 2002; Teegarden iyo Bale, 2007)
 Dareen-celinta is-dhaafsiga leh ee kiciya nafsiga ahN / A(la dhimay)(Vezina al et., 1989; Bardo al et., 1995; Fiorino iyo Phillips, 1999; Avena iyo Hoebel, 2003b, a; Cagaaran al et., 2003; Gosnell, 2005; Pitchers al et., 2010a)
 Is-maamulka nafsiga ah↑ ama NC↓ (w/ helitaan isku mid ah)↓ ama NC(Carroll al et., 1989; Lett, 1989; Bardo al et., 2001; Covington iyo Miczek, 2001; Cosgrove al et., 2002; Isaga iyo Grasing, 2004; Lenoir al et., 2007; Smith al et., 2008; Cagaaran al et., 2010)
 Doorbida booska shuruudaysan ee nafsiga ah↓ (jimicsiga) ↑ (kobcinta deegaanka)(Shippenberg iyo Heidbreder, 1995; Davis al et., 2008; Cagaaran al et., 2010; Pitchers al et., 2010a; Thanos al et., 2010)
 Dib u soo celinta dabeecadda daroogada(Swart, 2000; Lynch al et., 2010; Zlebnik al et., 2010)
Caadiga Neurochemical
 Dareenka NAC dopamine jawaabtaMayaMaya (sonkor joogto ah)(Robinson iyo Becker, 1982; Kohlert iyo Meisel, 1999; Leri al et., 2003; Avena al et., 2008)
 Calaamadeynta dopamine striatal oo isbedeshay↓D2, ↑D3↑D1, ↓D2, ↑D3↑D1, ↓D2, ↑D3, hoos u dhaca DA↑ D2(Packard iyo Knowlton, 2002; Porrino al et., 2004a; Porrino al et., 2004b; Davis al et., 2008)
 Calaamadaynta striatal opioid oo beddeshayNC enkephalin ↑ ama NC μ reseptors ↑ dynorphin↑ μ receptors ↑ κ reseptors ↑ dynorphin↑ μ receptors (sidoo kale farac ku jira) ↓ enkephalin ↑ enkephalin faraca↑ μ receptorsNC μ receptors ↑ dynorphin(Hammer, 1989; Unterwald al et., 1994b; Bardo al et., 1997; Steiner iyo Gerfen, 1998; Turchan et al, 1999; Weme al et., 2000; Colantuoni al et., 2001; Kelley al et., 2003; Spangler al et., 2004; Bradley al et., 2005; Dulucda al et., 2008; Solecki et al, 2009; Vucetic al et., 2010; Wee iyo Koob, 2010)
 Sare u kaca amygdala CRF inta lagu jiro bixitaanka(Maj et al, 2003; Teegarden iyo Bale, 2007; Koob iyo Le Moal, 2008)
 Fosforyaalka NAc CREB oo la dhimay✓ (ka-noqoshada)(McDaid al et., 2006a; McDaid al et., 2006b; Teegarden iyo Bale, 2007; Wallace al et., 2008; Cagaaran al et., 2010)
 Kor u kaca NAc delta FosB(Nestler al et., 1999; Werme al et., 2002; Wallace al et., 2008; Solinas al et., 2009; Pitchers al et., 2010b)
Mesocorticolimbic Synaptic Plasticity
 Bedelay saamiga VTA AMPA/NMDA inta lagu jiro ka bixitaanka(Saal al et., 2003; Chen al et., 2008a; Chen et al, 2010)
 NAc nambarka dendrite(Fiorino iyo Kolb, 2003; Robinson iyo Kolb, 2004; Meisel iyo Mullins, 2006; Pitchers al et., 2010a)
 NAC cufnaanta laf dhabartaNC (pellets sukrose ee shaqeeya, gelitaan xadidan)(Fiorino iyo Kolb, 2003; Robinson iyo Kolb, 2004; Crombag et al, 2005; Meisel iyo Mullins, 2006; Pitchers al et., 2010a)

CREB: curiyaha jawaabta AMP wareegta ah ee isku xidha borotiinka, CRF: corticotropin factor factor, NAc: nucleus accumens, N/A: ma khuseyso, NC: wax isbeddel ah ma jiro, VTA: aagga ventral tegmental.

Tag:

Mahadnaq

Taageerada dhaqaale waxaa bixiyay hay'adda DA026994 ee NIH. Waxaan jeclaan lahaa inaan u mahadceliyo Kelly Conrad, Ph.D. iyo Tiffany Wills, Ph.D. faahfaahin wax ku ool ah oo ku saabsan qoraalkii hore ee qoraalkan.

Tag:

Qoraalada

Diidmada Daabacaha: Tani waa faylka PDF ee qoraallada aan la saadaalin Karin ee la aqbalay daabacaadda. Adeeg ahaan macaamiisheena waxaan siineynaa qoraalkan hore ee qoraal gacmeedka. Qoraalku wuxuu qaadan doonaa nuqulka, qeexidda, iyo dib-u-eegista caddaynta la soo gudbiyey ka hor inta aan lagu daabicin foomka ugu dambeeya ee la heli karo. Fadlan xusuuso in inta lagu jiro qaladaad habka wax soo saarka laga yaabo in la ogaado taas oo saameyn karta mawduuca, iyo dhammaan sharciyeynta sharciga ah ee khuseeya qoraalka.

Tag:

tixraacyada

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