Karolo e lefifi ea ho lemalla lijo (2011)

. Sengoloa se ngotsoeng; e fumaneha ho PMC 2012 Jul 25.

E hatisitsoe ka mokhoa o qetelle o hlophisitsoeng e le:

PMCID: PMC3304465

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inahaneloang

Bokhobisanong ba lithethefatsi, phetoho ea ts'ebeliso ea lithethefatsi tse tloaelehileng ho latela ts'ebeliso e hokahane le phetoho ho tloha ho matlafatsong e ntle le ho isa matlafatsong e mpe. Ka mantsoe a mang, lithethefatsi qetellong li its'etleha ho thibela kapa ho imolla lipehelo tse mpe tse hlahisoang ke ho ila (mohlala, ho ikhula) kapa maemo a mabe a tikoloho (mohlala, khatello). Mosebetsi oa morao-rao o supile hore phetoho ena ea "lehlakore le lefifi" e bohlokoa hape ntlafatsong ea bokhoba ba lijo. Pele, tšebeliso ea lijo tse matlafatso li na le li matlafatso tse matlafatsang, tse thabisang le tse matlafatsang, "tse khothatsang" tse ka etsang hore likaroloana tsa mmele li fane ka maemo ka mokhoa o hlakileng. Ho ja khafetsa, ka linako tse ling tsa lijo tse matlafatsoang ho ka mpefatsa khatello ea maikutlo le ho nyenyefatsa tsela eo moputso o tsoelang pele o fetoha tlamo ea ho thibela maemo a mabe a maikutlo ka ts'ebeliso e mpe. Matšoenyeho, ho tšoenyeha le ho tepella maikutlo ho bontšitse ho phahama ho hoholo le menyetla ea ho baka mekhoa ea ho ja e joalo ka batho. Mefuta ea liphoofolo e bonts'a hore phihlello ea nako le nako ea lijo tse matlafatsoang e ka lebisa mathateng le maikutlong a ho khaotsa ha lijo li se li sa fumanehe, mamello le ho theoleha ha moroalo oa moputso oa kelello, ho batla lijo tse fumanehang habonolo leha ho ka ba le litlamorao tse mpe ebe o khutlela bocha. ho batla lijo ka lebaka la tšusumetso e joalo e tšoenyang. Mekete e kopantsoeng ho fihlela joale ka lehlakoreng le lefifi la ho lemalla lijo e tšoana hantle le e amanang le ts'ebeliso ea lithethefatsi le joala. Tlhahlobo ea hajoale e akaretsa tlatsetso e tebileng le e matla ea Bart Hoebel ea ho utloisisa karolo ea "lehlakore le lefifi" tšebelisong ea lijo le mosebetsi o amanang le ba ba mo latelang.

Keywords: Tlatsetso ea lijo tse fumanehang habonolo, ho tlosoa kapa ho se ts'oaroe kapa ho ts'oaroa, ho ama hampe kapa ho tšoenyeha kapa khatello ea maikutlo, khatello ea kelello, ho itlopa lijo kapa bulimia, tsoekere kapa sucrose kapa tsoekere kapa chokolete kapa mafura a mangata.

1. Selelekela

Bokhoba ba lithethefatsi ke boloetse bo sa foleng, bo khutlang hape bo nang le mekhahlelo e meraro e arohaneng: mohato oa botahoa o khannoang le o khetholloang ke melemo ea sethethefatsi, mohato oa ho hula o tsamaeang le maikutlo a mabe ha thepa ea lithethefatsi e putsoang e fela, le ho ameha haholo le Karolo ea tebello e tlang pele ho ts'ebeliso e ncha ea lithethefatsi. Dr. Bartley Hoebel ke e mong oa bo-pula-maliboho ba pele-pele ba ileng ba nahana hore ho ja tsoekere, mohlomong le lijo tse ling tse monate, le hona ho ka laoloa ke mekhahlelo ena e meraro ea bokhoba. Boetapele ba hae bo thusitse eseng feela ho koaleng makhoba a tahi le boits'oaro ka mosebetsi oa hae oa liteko, empa hape le boitekong ba hae ba ho eketsa tlhokomeliso le ho tiisa seo e neng e le khopolo e sa rateheng ebile e le likhang ho sechaba sa mahlale - hore motho a ka fetoha “O lemaletse lijo.” Hona joale, lipuo tsa liboka tsa ho lemalla lijo, joalo ka Seboka sa Lijo le Tlhekefetso mabapi le ho ja le ho its'etleha se tšoaretsoeng ke Setsi sa Rudd sa Leano la Lijo le Botenya ho Yale, seboka sa "Tlhekefetso ea Lijo: 'Nete kapa Khopolo-taba" kopanong ea liteko tsa Biology ea 2008 e San Diego, le Seboka sa Botenya le Tlhekefetso ea Lijo sa 2009, khafetsa se bokella bo-ramahlale, lingaka, baetsi ba melaoana ea sechaba, le babuelli ba bophelo bo botle ba tsoang maemong a fapaneng. Ho feta moo, mosebetsi oa Dr. Hoebel o matlafalitseng o thusitse ho hlohlelletsa litsi tse ikemiselitseng ho ntšetsa pele lipatlisiso tsa bokhoba ba lijo, ho kenyeletsoa Setsi sa Tlhekefetso ea Lijo le Setsi sa Patlisiso ea Tlatsetso ea Lijo.

Ha basebelisi ba lithethefatsi ba tsoela pele ho tsoa tšebelisong ea lithethefatsi ho ea ho lithethefatsi, mabaka a susumetsang tšebeliso ea lithethefatsi ke matla a ho fetoha. Leha ts'ebeliso ea mantlha e susumetsoa ke litheko tse matlafatsang tsa lithethefatsi, tšebeliso ea lithethefatsi e khothalletsoa hore e hlohlellehe ka ho khothaletsoa ka mokhoa o matla (mohlala, ho phahama), empa haholoholo ka ho matlafatsa hampe: ho thibela kapa ho imolla boemo bo bobe ba maikutlo bo hlahang ho tsoa taolong (mohlala, ho tlosoa hoa lithethefatsi) kapa ho tsoa phihlelong e bohloko ea tikoloho (mohlala, khatello ea maikutlo) []. Boemong ba methapo ea kutlo, phetoho ena e tsamaisana le ho fokotsoa hoa lits'ebetso tsa moputso oa boko tse fanang ka karabelo ea takatso ho lithethefatsi le ho eketsoa hoa khatello ea kelello kapa tsamaiso ea "thepa". Moralong ona, ho fetohela "lehlakoreng le lefifi" la bokhoba ba lijo ho ka hlalosoa ka mokhoa o tšoanang e le phetoho ea mantlha ts'ebetsong ea bokhoba ba tahi. Ha batho ba ntse ba hatela pele ho jang lijo tse matlafatsoang, boleng bo hlasimollang ba lijo bo ka ba le bohlokoa bo fokolang ba ho susumetsa ho ja ho feta ho thibela kapa ho khahlapetsa lipehelo tse mpe (mohlala, ho tšoenyeha, khatello ea maikutlo, ho teneha, mohlomong le matšoao a bang teng ka thipa) a Ba nang le boiphihlelo ha lijo tse ratoang joalo li sa fumanehe kapa ha maemo a leholimo a le mabe.

2. Bopaki ba "lehlakore le lefifi" lithutong tsa batho

Ho fumana hore na "lehlakore le letšo" la ho lemalla ho fana ka tšusumetso ea lijo tse matlafatsoang, ntlha ea bohlokoa ke ho khetholla palo ea batho bao mekhoa ea bona ea ho ja e tšoanang hantle le boits'oaro bo lemaletseng. Leha botenya le litloaelo tse joalo tsa ho ja li ka ba teng hangata, "bokhoba ba lijo" ha bo na monyetla oa ho hlalosa maemo ohle a botenya ba batho, mme batho ba bang ba boima ba tloaelo ba kenella mokhoeng o joalo oa ho ja. Ha ho na mokhoa oa ho lumellana oa tlhahlobo ea "ho lemalla lijo" hajoale o teng [, ]. Leha ho le joalo, haufinyane tjena, Yale Food Addiction Scale (YFAS) e hlahisitsoe e le letšoao la boits'oaro ba ho ja bo ts'oarang bo etsisang litekanyetso tsa tlhahlobo ea ts'ebeliso ea thepa ho DSM-IV-TR []. YFAS e lekanya boholo ba (a) batho ba jang haholo lijo tse khethehileng leha ba ntse ba leka khafetsa ho fokotsa tšebeliso ea bona, (b) boits'oaro ba bona ba ho ja bo kena-kenana le mesebetsi ea boikhathollo le boiphihlelo, le (c) matšoao a tlisoang a hlaha ha a sa je lijo tse itseng. Tšebeliso ea pele ea litekanyetso tsena e bonts'a hore tekanyo e phehellang, e sa laoleheng ea lijo tse matlafatsang ho feta tse lebelletsoeng li bonoa limmapa tsa bothata ba ho ja ka mokhoa o hlakileng ka mokhoa o hlakileng litekanyetsong tsa hona joale tsa tlhahlobo ea litheko. Ka lebaka leo, lintlha ho YFAS li boletse esale pele ho itlopa lijo le ho ja maikutlong [] empa a se ke a lumellana le index ea mmele ea boima ba 'mele (BMI) ho basali ba neng ba le tekong ea tokiso ea boima ba' mele ea tlalehileng a se na bothata ba ho ja []. Liphetho tsena li fana ka maikutlo a hore "lehlakore le lefifi" la ho lemalla lijo, joalo ka ha le sebelisoa ke YFAS, le ka ithutoa ka botlalo ho batho ba jang ho ja ho feta ho batho ba batenya ba khethiloeng ka tšohanyetso.

2.1 Psychiatric comorbidity ha u itlopa lijo

Ho latela karolo eo ho ka etsoang hore e be karolo ea "lehlakore le lefifi" litlamong tsa lijo, batho ba jang ba bangata ba na le litekanyetso tse ngata tsa tlhahlobo ea kelello e kenyeletsang maemo a mabe a maikutlo ha a bapisoa le sechaba ka kakaretso. Mohlala, batho ba baholo le ba lilemong tsa bocha ba nang le bothata ba ho ja ho feta ba bontša hore ho na le khatello e kholo ea khatello ea maikutlo, ho ferekana kelellong, mathata a ho tšoenyeha le tšebeliso e mpe ea joala kapa lithethefatsi ho feta ho batho ba se nang bothata ba ho ja [-]. Tekanyo ea khatello ea maikutlo e kholo le eona e phahame ho feta ba batenya, empa ho ja lijo tse nang le khatello e matla ea khatello ea maikutlo ho ntse ho le teng le lipapisong tse boima tsa batho ba boima haholo le ba batenya haholo.]. Maemo a phahameng haholo a maikutlo a ho ipolaea ho batho ba jang litlhapi tse ngata a paka ho ferekana ha maikutlo ho batho bana. Batho ba fetang halofo ea bana ba lilemong tsa bocha ba nang le bana ba nang le bothata ba ho ja ka ho feteletseng ba tlaleha ho ipolaea, 'me karolo ea boraro ea bo-nkhono ba lilemong tsa bocha e leka ho ipolaea.]. Tataiso ea ho hlonama lipakeng tsa ho itlopa joala le khatello ea maikutlo e kholo ha e tiisoe 'me e ka ba puseletso [-]. Comorbidity e joalo ea kelello e amahanngoa le phello e mpe ea kalafo ea nako e telele [le khafetsa ho ja ho ja []. Ka lehlakoreng le leng, li-antidepressant tse ngata, joalo ka li-SSRIs kapa li-tricyclics, li ka fokotsa khafetsa le ho teba ha matšoao a ho itlopa lijo.].

Libaka tse sithabetsang tsa maikutlo tsa 2.2 li eketsa lijo tse fumanehang habonolo bathong ba tlokotsing

Ho ata le ho teba ha khatello ea maikutlo le ho tšoenyeha ho batho ba jang haholo ho fana ka maikutlo a hore maikutlo a fosahetseng a ka baka hore motho a boele a be le boitšoaro bo bobe. Ka sebele, mekhoa e seng ntle ea ho itlaleha ea maikutlo a ho tepella maikutlong, ho itšepa ho tlokotsi, le neuroticism li amahanngoa le ho itlopa joala ho banna le basali []. Nakong ea maikutlo le maemo a fosahetseng, batho ba tloaelehileng le ba fokolang ba tlaleha ho ja lijo tse fokolang ho feta nakong ea maikutlo le maemo a monate. Ka lehlakoreng le leng, sena se sisinyehang ka lebaka la maemo a mabe ha se bonoe ho batho ba nonneng haholo, ba tlalehang ho ja haholo nakong ea maemo a mabe ho feta ho lihlopha tse ling []. E lumellana le karolo ea maemo a sithabetsang a maikutlo a ho khanna ho itlopa lijo, litla-morao tsa maemo a leholimo a bulimics li fokotseha kapele pele ho itlopa ho feta ka matsatsi a ha ho se hobetse ho leng teng [].

Moaho o mong o kenyang khatello ea maikutlo le maikutlo a fosahetseng joalo ka lintho tse u bakang ho ja haholo ke mokhoa oa ho itšireletsa mafung. Boiteko ba ho laola boima ba 'mele (mohlala, ka ho ja, ho ikoetlisa, khatello ea takatso ea lijo, kapa lijo tse tlisoang ke lijo tse matla) li amana ka mokhoa o makatsang le keketseho ea boima ba mmele ho bacha ba basali []; thibelo ea lijo ka mokhoa o ts'oanang e amahanngoa le phaello e telele ea boima ho basali ba baholo ba basali []. Tlhaloso e ka khonehang bakeng sa likarohano tsena tse totobetseng ke ho fumana ho ts'oanang hore batho ba jeleng lijo ba ja haholo ho arabela maemong a fapaneng a sithabetsang []. Mohlala, tebello ea khatello ea maikutlo sechabeng (mosebetsi oa ho bua phatlalatsa) e ile ea eketsa keketseho ea lijo ho batho ba jang lijo tse sa laoleheng ha e sa fetole ea ba jang ba sa laoleheng []. Ka mokhoa o ts'oanang, bareki ba ithibileng lijo ba tlalehileng khatello e phahameng ea bophelo le tse mpe tse amang ho latela letoto la mesebetsi e lemohileng ba bontšitse ho ja haholo kamora khatello ho feta ba tlalehang maemo a tlase a khatello ea maikutlo []. Thibelo ea ho ja lijo le tsona e kanna ea ba le lithibelo tsa nakoana bakeng sa ba jang lijo tse matla hobane sepheo sa ho thibela ts'ebeliso ea lijo li ngata haholo pele ho ho itlopa lijo ha ho bapisoa le matsatsi ao ho sa kulang ha ona.].

Leha lithuto tsa maiketsetso tsa laboratori li ka nyatsoa ka hore ha li latele mekhoa ea 'nete ea ho ja lefatše tlasa maemo a tlhaho a maikutlo [], hape ba ts'ehetsa ka botebo maikutlo a "lehlakore le lefifi" ao ho nona ho feta tekano ho ka susumetsoang ke karabelo e sithabetsang kapa e mpe ea maikutlo maemong a batho. Mohlala, batho ba jang litlamorao ba ile ba ja chokolete e kholo haholo kamora ho shebella filimi e soabisang sebakeng sa laboratori ho feta ho latela filimi e sa nke lehlakore.]. Bohle ba nkang karolo phuputsong ena ba tlaleha hore ke mokhoa o mong oa bona oa ho itlopa lijo, ka "khatello ea maikutlo" kapa "ho hlonama" hangata ho hohelang. Bakeng sa basali bao e seng ba batenya haholo, ba nang le likarabo tse ngata tsa "cortisol" tse phahameng tsa betri ba jeleng haholo kamora boiphihlelo bo sithabetsang ho feta ba ba nang le karabelo e tlase ea cortisol []. Ho hlahisoa ha boemo bo bobe ba maikutlo ka ho hopola ka memori e utloisang bohloko ea memori e utloisang bohloko le hona ho eketse palo ea lijo tse se nang phepo tse sebelisoang thutong ea batho ba sa jeng lijo, 'me phello e ile ea phatlalatsoa ka ho khetheha ho barupeluoa ba tlalehileng "ho ja maikutlong" ho feta]. Ho fapana le se fumanoeng se fumanoeng le se etsahetseng ho bareki ba sa thibeloang, bareki ba sa laoleheng e fokotsehile lijo tsa bona tse bobebe ka mor'a ho shebella filimi e soabisang [, ].

Ho ja lijo tse se nang tšusumetso e mpe joalo ho ka senya boima ba 'mele. Ho fokotsa boima ba 'mele likhoeling tsa 6 tse latelang katleho ea boima ba' mele ho amahanngoa le ho ja ho arabela liketsahalong tse sithabetsang tsa bophelo, ho ja ka ho arabela ka maikutlo a mabe, le ts'ebeliso ea lijo ho laola maikutlo []. Mohlomong ka ho loketseng, ho eketsa kalafo ea kelello ho thusa ho laola maikutlo le ho sebetsana ka katleho le ho ja le ho ja feela, ho ka fokotsang botena le botena []

Tšusumetso ea 2.3 ea tšebeliso ea lijo tse matlafatsang molemong oa tšebetso le moputso

Ho ja ka lebaka la maemo a sithabetsang maikutlong ho fana ka maikutlo a hore ho ja haholo e kanna ea ba mokhoa oa ho itlhahisa ka "lijo tse khothatsang." Lijo tse tloaelehileng tse sebelisoang nakong ea ho itlopa lijo hangata lia utloahala ebile li matla haholo; ho ea pele, hangata ke lintho tse nkiloeng ke lik'habohaedreite tse kang bohobe, pastas le liswiti []. Qalong, lijo tse nang le phepo e ngata ea 'mele tse nang le phepo e ngata li ka ba le tšusumetso e mpe e khothalletsoang, hobane li fokotsa litlaleho tsa khalefo [] le tsitsipano [] le ho eketsa khutso kahare ho 1-2 hr ea ts'ebeliso. Ho nahana ka makhetlo a mangata ka lijo tse monate joalo, ho ka hlahisa neuroadaptations ea nako e telele moputsong oa khatello ea kelello le khatello ea maikutlo tse qetellang li khothaletsang karabelo e nyahamisang kapa e tšoenyang ha lijo tseo li se li sa fumanehe kapa li sa jeoe. E lumellana le "hypo" ena e lefifi "kamora ho ja lijo tse nang le mafura a mangata (41%) bakeng sa khoeli e le 'ngoe, banna le basali ba fetotsoeng ho mafura a tlase (25%), lijo tse nang le" carbohydrate e ngata "li ile tsa tlaleha bohale bo eketsehileng le bora nakong ea Khoeling e latelang ho feta bafo ba ileng ba tsoela pele ho ja lijo tse nang le mafura a mangata []. Khalefo e eketsehileng e kanna ea bakoa ke phokotso ea mafura a ja (kapa ho tsebahala) kapa ho tloha li-neuroadaptations ho ea ho nama ea nama ea nama ea phepo.

Tšebeliso e fetelletseng ea lijo tse matlafatsoang haholo e ka nyenyefatsa ho potoloha ha moputso oa dopaminergic ka mekhoa e supang tse tloaeloang ke ts'ebeliso ea lithethefatsi: phokotso ea striatal dopamine D2 receptor fumaneha le ho lokolloa ha dopamine [, ]. Ho joalo, batho ba batenya ka ho fetesisa ba bonts'a phumaneho e tlase ea "dopamine D2 receptor" ho feta taolo e senang mafura, mme phokotso ea D2 ea striatal e kopantsoe ka kotloloho le BMI [, ]. Ts'usumetso ea Caudate ha e araba "chisi ea" chisi ea chokolete e boetse e fokotsehile ka tekanyo e feteletseng ho batho ba iketang []. Boemo bona ba mosebetsi o ferekantsoeng bo tsebahala haholo bathong ba nang le polymorphism ea TaqIA A1 ea D2 receptor, e amanang le polelo e fokotsitsoeng ea D2 receptor []. Polymorphism e 'ngoe e amanang le ts'ebetso ea dopamine e fokotsehileng, alamo ea 7R ea dopamine D4 receptor, e amana le bophelo bo phahameng ba BMI BMI ka bulimics [] hammoho le boitšoaro bo bobe ba ho ja ho basali ba nang le khatello ea maikutlo ea nako le nako []. Lintlha tse kopantsoeng tsa liphatsa tsa lefutso li fana ka maikutlo a ho fumana bokamoso ba batho ba nang le bothata bo tlase ba dopaminergic signaling, 'me ho nahanoa hore batho ba joalo ba ja ho feta tekong ea ho lefella khaello ea moputso e nkoang. Boitsebiso ba morao-rao bo fana ka maikutlo a hore boima ba (kapa sehokelo sa ho nona haholo, mohlomong se jang lijo tse matlafatsoang) se theola tšebetso ea dopamine ea striatal. Basali bao BMI ea bona e ileng ea eketseha nakong ea khoeli ea 6 ba bonts'itse ts'ebeliso ea "chacate" ea ts'ebeliso ea chisi ea chokolete ho feta basali bao BMI ea bona e tsitsitseng, mme phokotso ea ts'ebetso ea caudate e ne e amana le ho eketseha ho hoholo ha BMI []. Ka lehlakoreng le leng, ho fetela ka mpeng ea gastric ho ekelitse le ho fumaneha ka bongata nakong ea libeke tsa 2 tsa ts'ebetso ea bongaka ea bariatric thutong e nyane ea basali ba batenya haholo.].

Ho fumaneha ha li-receptor D2 tsa Striatal ho boetse ho lumellana ka ho toba le metabolism ea glucose libakeng tse ka pele tsa cortical tse fanang ka taolo ea thibelo, ho kenyelletsa le dorsolateral pele, orbitof Pambal, le anterior cingulate cortices []. Kamano ena e fana ka maikutlo a matla a fokotsitseng phetoho ea dopaminergic ho tloha striatum e ka lebisa taolong e thibelang takatso ea lijo ka ho etsa joalo mme ea eketsa kotsi ea ho nona. Mohlomong ka analog, ho ikamahanya ka kotloloho lipakeng tsa striatal D2 phumano le tsoekere ea tsoekere ho dorsolateral le anterior cingulate cortices le eona e hlokometsoe ho lino tse tahang, empa eseng ho lithethefatsi tse seng tse tahang kapa tse seng tse mpe haholo [, ].

E lumellana le phapang e ntlafalitsoeng ea boitšoaro ho karabelo ea ho ingestive ea khatello ea maikutlo, mokhoa oa ho ja o boetse o khetholla manonyeletso a nang le li-profiles tse ikhethang tsa mesolimbic dopamine system. Batho bao eseng batho ba batenya haholo ba tlalehileng "ho ja maikutlong" ho feta ba bonts'a ho fumaneha ha D2 ea mantlha e fumanehang ka har'a dorsal striatum ha e bapisoa le ba jang maikutlo. tse phahameng haholo lithibelo tsa ho ja li ne li eketsehile D2 e tlamang ka har'a dorsal striatum ho arabela ho tsosa takatso ea lijo ha ho bapisoa le tse fokolang tsa thibelo ea lijo []. Kamora nako, ba jang li-joese tse fetang mafura ba bonts'itse li-receptor tse ngata tsa D2 tse tlamelehang ka thipa ho araba motsoako oa ho tsosa lijo le phepelo ea methylphenidate ha ho bapisoa le ba jang ba sa jeng lijo tse ngata., ].

3. Bopaki ba "lehlakore le lefifi" ho tsoa mefuteng ea liphoofolo ea ho lemalla lijo

Nts'etsopele ea mefuta ea liphoofolo e ne e le senotlolo sa ho netefatsa mohopolo oa bokhoba ba lijo le ho qala ho khetholla "lehlakore le lefifi." Sehlopha sa Bart Hoebel se etelletse pele mehlaleng ea litekanyetso tsa bokhoba ba lijo ka litoeba []. Leha mefuta ea liphoofolo e sa khone ho akaretsa lintlha tsohle tse rarahaneng tsa bophelo tse susumetsang mokhoa oa ho ja ho batho, ba na le monyetla oa ho khetholla habonolo lipakeng tsa litlamorao le litlamorao tsa boitšoaro bo bobebe ba ho ja, ho theha taolo e matla ea lijo, le ho lumella tlhahlobo e hlakileng haholoanyane mekhoa e amanang le limolek'hule.

Tlhahiso ea 3.1 ea linaha tse ikarolang ka mor'a ho felisoa ha lijo tse fumanehang habonolo

Tumellanong le "tšebeliso ea joala" ea boithuto ba lijo tse qapiloeng ke Hoebel le basebetsi mmoho le yena, liphuputso tse ngata mehlaleng ea liphoofolo li se li hlokometse lintlha tse tšoanang le tse tsoang liphoofolong tse kang liphoofolo tse tloheletsoeng ho fihlella lijo tse fumanehang habonolo. Mohlala, Hoebel le basebetsi mmoho le bona ba fane ka bopaki ba hore ho itlopa joala ka mehla ka litharollo tse phahameng tsa tsoekere (mohlala, 25% glucose kapa 10% sucrose) ho ka lebisa ho itšetleheng ha endio native opioid. Likhoto tse fanoang ke phihlello ea letsatsi le letsatsi ea 12-hr le tsoekere le 12-hr lijo li ile tsa pepesetsoa matšoao a amanang le ho tlosoa ha opiate, ho kenyelletsa ho qoqa ha meno, ho thothomela ha pele, le ho sisinyeha ha hlooho ha ho qholotsoa le opioid antagonist naloxone []. Ho khaotsa ho itširelletsang ka mokhoa oa boitšisinyo oa lexone ho boetse ho eketsa boitšoaro bo kang ba ho tšoenyeha ho liphoofotsoana tsa tsoekere tsa 12-hr letsatsi le letsatsi, joalo ka ha ho bonts'itsoe ka nako e bulehileng ea letsoho le lecha holima-maze, empa eseng ho liphoofolo tse fumanang lib lib ho kena ho chow kapa glucose []. Ntle le hore ketso ea boikhathollo ea naloxone, matšoao a ho khaola a boetse a "hlahella" 24-36 hr kamora seboka sa ho qetela sa phihlello ea glucose. Ha ho na le phephetso ea naloxone, boits'oaro bo ts'oanang le ho tšoenyeha ho feta-maze le bona bo bonoa liphoofolong tse potolohileng ka mor'a lebelo la 36-hr, joalo ka ha ho bapisoa le lib lib li-chow feed, li fana ka bopaki bakeng sa boemo bo phahameng ba ho tšoenyeha-joalo ka liphoofolo tse palameng li hullelitsoe phihlelong ea tharollo ea tsoekere [].

Hoebel le bo-mphato ba hae ba na le tšibollo ea maikutlo e fokotsang ts'ebetso ea moputso le boits'oaro bo eketsehileng ba ho tšoenyeha nakong ea ho tlohela, ho ka hlaha karolong e 'ngoe ea liphetoho ho tekanyo ea dopaminergic le acetylcholinergic (ACh) ho saena ka har'a striatum. Ba fumane hore phephetso ea naloxone e hlohlelletsa kholo ea ACh e hlahisoang ka har'a khapo ea methapo (NAc) ea litoeba tse nang le nalane ea ts'ebetso ea tsoekere ea 12-hr letsatsi le letsatsi le ho lateloa ke khaello ea lijo ea 12 hr ho feta ho liphoofolo tse boloketsoeng lib lib chow []. Keketseho ena ea karabelo ea ACh e tsamaisana le phokotso ea extracellular accumbens dopamine e latelang phephetso ea naloxone, e ts'oanang le e etsahalang nakong ea ho tlosoa ha morphine [, ]. Kamora ho potlaka ha 36-hr, liphoofolo tse nang le "glucose / chow-cycledled" li na le dopamine e tlase le maemo a phahameng a ACh extracellularly ho NAc esita le ho se na lexxone, e tšoanang le boemo ba ho itlosa bolutu ka mokhoa o ikemetseng nakong ea ho ila lijo tsa glucose []. Hoebel le bo-mphato ba hae ba etsa tlhahiso ea hore phetoho ena e lebisang tokollong ea ACh e ntlafalitsoeng ka nako e tšoanang le tokollo ea dopamine e fokotsehileng e ka bonts'a phetoho e pharalletseng ho tsoa boits'ebetsong ba dopamine-Mediated].

Ho sebelisa lijo tse tiileng tse nang le tsoekere, ho ena le ho ja lijo tse metsi, Cottone et al a. ka mokhoa o ts'oanang o fumane boitšoaro bo sa ts'oaneng ka mokhoa o iketsahallang literekeng tse tlositsoeng phihlelong ea nako le nako ho ja lijo tse nang le phepo e phahameng, e nang le chokolete. Likhoto tse fanoeng ka phapanyetsano ea letsatsi la 5-day / 2-letsatsi ho lijo tse tloaelehileng tsa laboratori le lijo tse matlafatsoang li qetile nako e nyane liatleng tse bulehileng tsa "mele-e phahameng" le nako e eketsehileng kahare ho phaposi ea ho tlosa mosebetsing ka boits'ireletso ha ho lekoa nakong ea chow mohato oa potoloho ea bona ea lijo, ]. Keketseho ea boits'oaro bo ts'oanang le ho tšoenyeha e ne e tsamaisana le polelo e eketsehang ea khatello ea kelello e amanang le khatello ea kelello ea neuropeptide corticotropin-releading factor (CRF) bokong bohareng ba amygdala (CeA), e leng sistimi eo hape e sebetsang nakong ea ho tlohela joala [-], opiates [-], cocaine [], cannabinoids [], le nikotine [, ]. Phekolo ka CRF e ikhethileng1 R121919 oa mohanyetsi o thibetse matšoenyeho a amanang le ho tlisoa ha lijo ka tekanyetso e sa kang ea fetola boitšoaro ba taolo ea chow-fed [-]. Ka mokhoa o makatsang, CRF1 bahanyetsi ba khothalelitsoe ke linaha tse hohelang kapa tse tšoenyehileng joalo ka ho khaotsa joala [, , ], opiates [, ], benzodiazepines [], cocaine [, ], le nikotine []. CRF1 Boiketsi ba ho qhekella bo boetse bo mpefatsa boemo boo liphoofolo tse tloaeloang ke li-cycled tse fetisang lijo tse nang le sesebelisoa tse matlafatsang tse fihletsoeng tekanyetso e sa kang ea fetola tšebeliso ea lijo tse fuoeng kapa tsa liphoofolo tse fepa lijo tse nang le phepo e ntle, empa ntle le nalane ea ho ja ka libaesekele . Ka mokhoa o makatsang, CRF1 bahanyetsi ba fokotsa joala bo feteletseng [, -], cocaine [], opiates [], le nikotine [] mehlaleng ea ho lemalla, ha e ntse e e-na le litlamorao tse nyane ts'ebelisong ea lithethefatsi le joala ea liphoofolo tse sa itšepe.

Ha ho ithutoa liphoofolo tse potolohileng lijo ha li ntse li fumana mokhoa oa ho ja oa ho ja lijo tse nang le takatso e matla, litso tsa bobeli tsa maze le maemo a CeA CRF, li ts'ehetsa maikutlo a reng ts'ebetso ea ts'ebetso ea amygdala CRF le boits'oaro bo joalo ba ho tšoenyeha li bonts'itse ho ntsoha ka matla. naha [, ]. Kamora nako, likhoto tse potolohileng lijo li boetse li bonts'a kutloisiso e eketsehileng ea li-neuron tsa CeA GABAergic ho feto-fetoha hoa modumo ke CRF1 antagonism. R121919 e fokotse ts'ebetso ea "inabitory postsynaptic" e fumanehang ho CeA ka tekanyo e kholo ho litheko tse tsamaeang le li-cycled ho feta taolong e fuoeng, e bonts'a tšusumetso e ntlafalitsoeng ea matla a CRF1 bahanyetsi mabapi le phetisetso ea CeA GABAergic synaptic e bonoang nakong ea ho tlohela joala []. Kahoo, mokhoa oa ho khahlisa lijo o amanang le lijo o tlisoang ke ho eketseha hoa polelo ea CeA CRF le boits'oaro bo ts'oanang le ho tšoenyeha, ho eketseha ha lijo leseling le nchafatso ea boits'oaro ka CRF1 Qhekello ea motho ea hanyetsang e tšoana le se fumanoeng litabeng tsa bokhoba ba lithethefatsi le joala [-].

Phuputsong e arohaneng, Cottone et al a. hape re fumane hore likhoto tsa basali tse nang le nalane ea ho fumana phepelo e fokolang haholo (10 min / day) ho fihlella tsokolate e tšoanang, e nang le phepo e ntle e bonts'itsoeng ha e anelle feela tlhoko ea bona ea lijo tse matlafatsang (tse jang 40% ea lijo tsa bona tsa letsatsi le letsatsi ho kenella kahare ho 10 min), empa hape le phokotso e khathollang ea tsoekere ea ho eketsa-maze e bulehileng nako ea letsoho ha a ithuta 24 hr kamora seboka sa bona sa ho qetela sa ho fihlella []. Likhoto tse tsoang ka li-cycled tse nkileng nako e fokolang ho matsoho a bulehileng le tsona e ne e le tse jang haholo lijong tse matlafatsang, ho ikopanya ho sa bonahaleng ho taolo e kopaneng. Liphetho tsena li tšehetsa tšebeliso ea maikutlo ea Hoebel e fihlellang nako e telele ea ho ja lijo tse nang le phepo e ntle e tlisang feela ho ja lijo tse nang le phepo e ngata, empa hape le boemong bo iketelletsang ba ho ba le letsoalo le eketsehileng mabapi le ho ja ka mokhoa o tšoanang le ho ja.

3.2 Sugar vs. lekhoba la mafura: Na ho na le phapang?

Hoebel le basebetsi mmoho le bona ba sa tsoa rera hore ho ka ba le ho hong ho fapaneng ka bokhoni ba tsoekere e bonolo (le mafura) ho khothaletsa "tlhekefetso ea lijo"]. Le ha matšoao a ho khaola a se nang thipitlo a joalo a bonahala a latela ho khaotsa ho fihlella ha tharollo ea tsoekere kapa lijo tse tiileng, nyeoe ea lipehelo tse latelang ho ja tse nang le mafura kapa motsoako o mafura a mangata ha e hlakileng. Joalo ka lijo tse tsoekere, likhoto li etsa mokhoa o kang oa ho itlopa lijo ha o fumana monyetla oa ho fumana mafura a hloekileng joalo ka ho khutsufatsoa hoa meroho.] le linoko tsa motsoako o mafura a monate []. Ho fapana le liphumano tse matla tsa ho tlosoa joalo ka opeate joalo ka likhaba tse tsamaeang le glucose, leha ho le joalo, phephetso ea lexxone le ho itima lijo li hlotsoe ho hlahisa matšoao a ho khaotsa a kang a somatic lithehong tse nang le phihlello ea nakoana ea mafura a meroho kapa 'mafura a monate [].

Ho ntse ho le joalo, ho haella ha matšoao a kang a ho khaola a ikhethileng joalo ka hona ha ho thibele kholo ea ho ba le maikutlo a mabe liphoofolong tse fuoeng lijo tse nang le mafura a mangata (ke hore, "ho tlohela chelete"). Ho joalo, ba bang ba hlokometse karabelo e fetohileng ea boits'oaro ho khatello e matla ea maikutlo ka mor'a ho tlosoa ha lijo tse phahameng tse nang le mafura a mangata. Lits'ila li lula li ja lijo tse nang le mafura a mangata li bonts'itse ts'ebetso ea tlhahlobo e bulehileng ea 24 hr kamora hore e fetoloe ho standard chow, e leng phello e sa bonoeng litekong tse tlositsoeng lijong tse phahameng haholo.]. Ho feta moo, ho tlohela ha 24-hr ho ja lijo tse nang le mafura a mangata ho boetse ho felletse ka maemo a CRF mRNA ho CeA [], ho tšoana le se fumaneng Cottone et al a. ka sejo se nang le 'mele o mongata []. Ka lehlakoreng le leng, liphapang tsa sehlopha li ne li sa bonoe linthong tse ling tsa boits'oaro bo kang ho tšoenyeha, ho kenyelletsa ho patoa ke 'mabole kapa boitšoaro bo phahameng ba maze. Menahano e meng ea ho fetolela liphetho tsa liteko tsa liteko tsa visa-tsa-vis tse kileng tsa hlahlojoa tsa "ho tlosoa" ha tsoekere e kenyelletsa hore lijo tse matlafatsoang li ne li fanoa khafetsa ho fapana le nako le nako; hore lijo tse nang le mafura a mangata mona li ne li khethoa haholo ho feta lijo tse nang le mafura a mangata; le hore sejo se phahameng sa sucrose e ne e le motsoako oa li-macronutrients, ho fapana le lijo tse tsoekere tse ngata kapa tse tsoekere.

Matšoao a kang a tlisoang ke ho tšoenyeha ha motho a tlosoa lijo tse matlafatsang a ka boela a fetoloa ka lebaka la liphatsa tsa lefutso. Cottone et al a. o bone phapang e tsitsitseng ea motho ka mong tekanyo eo likhoto li ikotlang lijo tse nang le phepo e phahameng e lumellanang le boemo ba bona ba ho tšoenyeha bo kang boits'oaro 24-hr post-access []. Selena et al a. e fumane hore lefu la ho nona haholo, empa eseng le emeloang ke botena, likhoto li bonts'itse ts'ebetso e fokotsehile bohareng ba masimo a 2 a bulehileng kamora libeke tsa 7 tsa ho fumana lijo tse matlafatsang tse nang le tsoekere e ngata. []. Liphoofolo tse nang le botenya hangata li ile tsa tsoela pele ho sokolla setho sa chow ho li-control tse peli feela le liphoofolo tse loantšang botenya ho qeta libeke tse tharo li tlohile.

Liroto tse tlositsoeng lijong tse ratoang le tsona li tla mamella litlamorao tse mpe ho fumana phihlello e nchafalitsoeng [, ]. Mohlala, litoeba li ikarotse lijong tse nang le mafura a mangata li qetile nako li le sebakeng se phetheselang moo li ka jang pente e nang le mafura a mangata ho feta litoeba tse sa tloheleng ho tsoa lijong tse phahameng tsa mafura kapa taolong e fuoeng mafura []. Likhoto tse nang le nalane ea ho fihlella lijo tse matlafatsang tsa kofi le tsona ha lia ka tsa fokotsa ho arabela bakeng sa lijo tse monate le leha ho le joalo ka lesela le nang le maemo a footshock []. Boitšoaro ba ho qetela bo tšoana le ho phehella ha boitšoaro ba ho batla koae ka koae leha ho e-na le khoele e boletsoeng esale pele e le footshock. Liphetho li bontša nts'etsopele ea mekhoa e jeletsoeng ea ho ja, mohlomong e ka bang takatso e matla ea lithethefatsi, e hananang le liphetho tse ka fokolisang [].

Khatello ea maikutlo ea 3.3 e bakang khatello ea maikutlo le takatso ea lijo

Hobane lijo tse matlafatsoang li ka ba le tšusumetso e mpe kapa "e khothatsang", ho tšoenyeha ho hoholo le khatello ea maikutlo ha se litlamorao tsa ho tlosoa lijong tse matlafatsang, empa e boetse e le lintlha tse susumetsang tse khothalletsang ho khutlela mokhoeng o mongata ka mor'a nako ea ho itlopa joala. Ka keketseho, keketseho ea ts'usumetso ea ho fumana, ho ja le ho khetha lijo tse "khothatsang" tse tlas'a khatello ea tikoloho li ka kenyelletsoa ho bonts'a lits'ebetso tse mpe tse matlafatsang tse sebetsang ho ba sebetsang nakong ea ho tlohela lijo tse fumanehang habonolo [, , , ]. Bokhoni bo thehiloeng hantle ba tšebeliso ea lijo tse matlafatsoang tlasa maemo a mang a ho fumana ts'ebetso ea methapo ea khatello ea kelello, joalo ka ha bo bonahala liketsong tsa boits'oaro, boipuso, neuroendocrine le methapo ea methapo ea kutlo [-], e tšehetsa tšehetso ena ka matla.

Mohlomong ho ea ka moo, alpha-2 adrenergic antagonist yohimbine, e leng khatello ea khatello ea meriana e hlahisang ho tšoenyeha ho hoholo ho batho le litoeba, mme e bakang ho khutlisetsoa hoa ha cocaine-, joala- le boitšoaro bo batlang methamphetamine ho litoeba [-], e baka le ho khutlisetsoa ha ho arabeloa litlatsetso tsa lijo tse monate le tharollo ea sucrose [-]. Yohimbine e kenya tšebetsong ea ho batla mefuta e mengata ea lijo tse nang le matla a peterole, ho kenyelletsa nama ea nama ea nama e sa ts'oaneng le sirapo, li-pentets tse nang le mafura a mangata, empa eseng ka matla le ha li na matla, mohlomong le tse bobebe, li-pentets tsa cellulose []. Lisebelisoa tse ngata tsa li-neurotransmitter li hlahisitsoe e le li-modulators tsa tlase tsa phello ena, ho kenyelletsa le CRF, orexin le dopaminergic system. Itsoalo tsa tsamaiso le CRF1 receptor antagonist antalarmin e fana ka matla a ho khutlisetsoa hoa phepong ea yohimbine - e hlahisang lijo tse fumanehang habonolo [], joalo ka litlatsetso le mohanyetsi oa kelello oa Orexin-1 SB334867 []. Sebaka sa ts'ebetso ea lisebelisoa tsena ho thibela yohimbine e kentsoeng hape e ntse e sa tsejoe. E ipapisitse le neuroanatomy ea khatello ea maikutlo kapa yohimbine-e susumetsang ho khutlisetsoa hoa ho batla lithethefatsi [], leha ho le joalo, libaka tse amehang ho amygdala e atolositsoeng kapa taolong ea thibelo ea bokhachane ke khetho e ntle. Ha e le hantle, microinjection ea CRF ka har'a li-nucleus tsa li-nucleus e ka baka karabelo e tlisoang ke ho ts'oaroa ha cue [] le tsamaiso ea mohanyetsi oa dopamine D1 SCH23390 ka cortex e tsoang dorsomedial pele e ka tlisetsa yohimbine-e susumetsang ea ho khutlisetsoa hoa lijo tse batlang [].

Maemo a sithabetsang a tikoloho le 'ona a ka etsa hore lijo tse fumanehang habonolo ke litoeba. Tlas'a khatello ea maikutlo e sa fetoheng, litoeba li khetha ho ja li-caloric tse ngata letsatsi le leng le le leng lijong tsa mafura a mangata ho feta ho tsoa liprotheine tse ngata kapa ho ja lijo tse nang le lik'habohaedreite tse ngata []. CRF2 litoeba tse haelloang, tse bonts'ang karabelo e fetelletseng ea HPA-axis ho imeloa kelellong, li eketsa takatso ea tsona ea ho ja lijo tse nang le mafura a mangata ho latela khatello e fapaneng ea maemo ho fapana le taolo ea mofuta o hlaha, haeba lijo tse phahameng tsa mafura li fuoa 1hr letsatsi le letsatsi ho fapana le ad libitum. Litoeba tsena li boetse li bontša phokotso ea tokollo ea CORT ho thibela khatello ea maikutlo kamora libeke tsa 2-3 tsa ho pepesehela mafura a mangata, carbohydrate, le lijo tsa protheine nakong ea khatello ea maikutlo e sa fetoheng [].

Boggiano le basebetsi mmoho ba fumane kamano e kopaneng lipakeng tsa thibelo ea lijo le khatello ea maikutlo mabapi le phepelo ea ho ja lijo tse nang le phephetso ho litoeba tse ka supang tšebelisano ea pele ea ts'ebeliso ea lijo le khatello ea maikutlo molemong oa ho ja ho tlisoang ke batho. Ka mohlala, ha ho na nalane ea thibelo ea caloric kapa khatello ea kelello feela e lekane ho khothaletsa ho ja ho ja-joalo-joalo ka lijo tse jeoang ke likhoto tse sa jelloang. Ho e-na le hoo, ho kopantsoe ha lintho tse potiloeng khafetsa mabapi le lithibelo tsa phepo ea lijo + footshock ho lebisa ho keneleng lijo tse matlafatsang (li-cookie) ka mor'a khatello ea kelello [, ]. Keketseho e eketsehileng ha e tsamaisoe ke tlhoko ea hona joale ea metabolic hobane kemiso ea lijo e lumella lihlopha tse thibelitsoeng ho fepa hape ho chow ho boima bo tloaelehileng ba 'mele pele ho phephetso ea footshock []. Haeba ho na le chow e tloaelehileng e teng, ha ho boitšoaro bo tšoanang le ho itlopa lijo, empa haeba sampole e nyane ea lijo tse matlafatso e fanoa hammoho le lijo tse tloaelehileng, likhoto li tsoela pele ho itlopa joala. Lintlha tsena li lumellana le tse fumanoeng ho bo-'mampoli ba motho, ba nang le monyetla o moholo oa ho qala ho itlopa lijo tse ling kapa tse ling haeba ba ka qala ho ja lijo tse lakatsang []. Lihlopha tse ling li hlokometse mokhoa o ts'oanang oa ho itlopa lijo ka mokhoa o latelang nalane ea thibelo ea lijo tsa cyclic haeba khatello ea methapo ea letsoho e nkeloa sebaka ke 15-min nako ea ho pepesa le ho hlahisa hampe lijo tse monate, nakong eo tšebeliso e sa lumelloeng []. Leha liphetoho tse nepahetseng tsa ts'ebetso ea methapo e hlahisoang ke mekhahlelo e mengata ea thibelo, khatello ea maikutlo le ts'oaetso li ntse li hlakisoa, li-opioids tsa morao-rao li ka kenya letsoho boits'oarong bo bakang khatello ea maikutlo. Phephetso ea Naloxone ea fokotseha 'me mu / kappa agonist butorphanol e eketsa phepelo ea lijo tse fumanehang sehlopheng se thibetsoeng + se imetsoeng ka ho khetheha [],

Tahlehelo ea 3.4 ea boleng bo matla ba hedonic

E 'ngoe ea matšoao a "lehlakore le lefifi" la bokhoba ba lithethefatsi ke nts'etsopele ea mamello, eo ho eona lithethefatsi tse kholo le tse kholo ho hlahisang phello e tšoanang ea hedonic. Linomoro tse fokolang ha li sa nkoa e le moputso. Ho lahleheloa ho tšoanang ha karabelo ea hedonic meputsong ea lijo ho ka etsahala ho liphoofolo tse nang le nalane ea ho fumana lijo tse fumanehang habonolo. Ka sebele, Hoebel le basebetsi mmoho le bona ba hlokometse keketseho e kholo ea tekanyo ea tsoekere matsatsing a latellanang a 12-hr phihlello e kenelletseng le tšebeliso e potlakileng ea tšebeliso ea tsoekere nakong ea hora ea pele ea phihlello, e lumellanang le nts'etsopele ea mamello le phetoho e lebisang ho jeng joalo ka ho itlopa lijo [] Khothatso e ntlafalitsoeng ea ho fumana lijo tsa tsoekere e boetse e bonoe ka mor'a nako ea libeke tse peli []. Bafuputsi ba bang haesale ba pheta ho nyoloha ho joalo ka ho itlhatsoa ho ka bontšang mamello ba sebelisa lijo tse fapaneng le tekanyo ea phihlello e lekanyelitsoeng [, , , ].

Hape e ka 'na ea tšoana le mamello, meputso e meng e neng e amoheleha ha e sebetse e ts'ehetsa ts'ehetso ea "opereishene e arabang" Likhoto tse fumanang phihlello ea nako le nako ho lijo tse nang le chokolete e nang le chokolete e nang le chokolete e nang le tšebeliso e tlase, ha li botsoa nako le nako ha li botsoa hore li arabe lijo tse sa rateheng, empa ka tsela e 'ngoe li ka fumaneha, sirapo e entsoeng ka poone e natsoe mocheso lenaneong le ntseng le tsoela pele la karolelano ea []. Khaello ea ho fumana lijo tse sa rateheng haholo e khutlisoa ka ho etsa joalo ka CRF1 antagonist, mohlomong e khahlisang bokhoni ba CRF1 antagonist ho khutlisetsa morao mosebetsi oa moputso nakong ea ha a khaotsa ho tsuba [].

Bopaki bo bong ba likarabo tse fokotsehileng mabapi le ho se fumanehe habonolo, meputso e meng e hlaha e tsoa litekong tsa tlhahlobo ea micropalular moo litekanyetso tsa dopamine tsa extracellular li ileng tsa lekanngoa ka likhoto tse nang le nalane ea phihlello ea lijo tsa kofi. Ho fepa ka lijo tsa k'hapete ho baka maemo a tlase a dopamine ka har'a li-nucleus tsa 14 ka mor'a ho fumana libeke tse ngata, le tokollo e tlase ea ts'usumetso ea dopamine ka bobeli ho li-accumbens le dorsal striatum []. Ho litoeba tse fepiloeng ke 'mankhonthe, ho ile ha bonoa keketseho ea dopamine efflux ha ho arajoa lijo tsa maemo a tloaelehileng tsa laboratori, athe keketseho ena e ne e se e sa bonoe litlamong tsa phepelo ea lijo. Dopamine efflux ha e arabela motsoako o mong o motle o khothatsang, amphetamine, le eona e ile ea fokotseha ka mokhoa o hlakileng liphatseng tsa phepelo ea lijo tsa kappa. Lijo tsa k'hafeine, leha ho le joalo, e ile ea tsoela pele ho susumetsa dopamine efflux ka har'a li-accumbens, e fana ka tlhahiso ea hore tšebeliso e tsoelang pele ea lijo tsa kofi e hlokahalang bakeng sa liphoofolo tsena ho qoba bofokoli bo sa feleng ba dopamine []. Ho kenella phepelong ea lijo tse nang le phepo e ntle ho ka boela ha ama bokhoni ba eona ba ho ts'ehetsa tokollo ea dopamine. Litekong tse nang le 12-hr nako e kenang ea ho kenella ho sucrose, sucrose e tsoela pele ho susumetsa dopamine efflux ka har'a li-accumbens kamora libeke tse tharo, empa phello ena e lahlehile ho liphoofolo tse nang le liphoofolo ad libitum ho fihlella [].

Meetso e kenang ea nakoana ea hypothalamic ea ho ikhatholla le eona e eketseha ho likhoto tse fanoeng ka lijo tse atolositsoeng, empa tse sa lekantsoeng, tse fumanehang lijong tse fumanehang habonolo tsa k'haravene. []. Meetso e phahametseng ea ho iqobella, letšoao la ts'ebetso ea moputso o sa sebetseng oa bokong, e hlaha ka nako e le ngoe le nts'etsopele ea botenya bo khothalletsoang ke ho ja le ho phehella esita le kamora ho qobelloa ho itlhahisa ho ja lijo tsa kapejana ka nako ea libeke tse peli. Analogous ho lipatlisiso tse fumanoeng pejana ho batho, litekanyetso tsa li-receptor tsa drietal dopamine D2 le tsona li fokotsehile haholo kamora ho fihlella nako e telele ea ho ja lireschorente; lendownirus-Mediated knockdown ea polelo ea li-receptor ea D2 e ile ea potlakisa keketseho ea meputso, e leng se hlahisang karolo ea ho baka bakeng sa ts'ebetso ena ea phepo ea phepo ho sa sebetseng ha morao hoa tsamaiso ea moputso oa boko []. Phokotso litheko tsa D2 tsa striatal [] le D2 receptor mRNA [] e boetse e hlokometsoe ho arabela mats'oao a letsatsi le letsatsi, a haelloang ke ho lekana le sucrose, ha D3 receptor mRNA le polelo ea transporter ea dopamine li ntse li eketseha []. Ho fetisoa ha mesolimbic dopaminergic phetisetso e ka ba le litlamorao tse sebetsang bakeng sa kotsi ea boima ba 'mele, hobane litoeba tse atisang ho nona haholo li na le litekanyo tse tlase tsa "extracellular dopamine" ka har'a li-ritamine tse thibelang botenya le pele ho boima ba' mele, le ente ea emidion ea lipid e hloleha ho eketsa bokaholimo. maemo a dopamine sehlopheng sa khatello ea botenya []. Ho fapana le moo, thibelo ea lijo e amahanngoa le keketseho ea litekanyetso tsa D2 ho litoeba tse feteletseng tsa Zucker []. Ka kakaretso, liphetho li fana ka maikutlo a hore tšebeliso e ntle ea lijo li ka lebisa ho senyeha ho sa feleng litsamaisong tsa moputso oa boko.

4. Liphello

Joalo ka ha phetoho ea ts'ebeliso ea lithethefatsi ho isa ho itšetlehileng ka eona e tsamaisana le ho fokotseha hoa mokoloto oa litefiso tsa boko le ntlafatso ea nako le nako ea "ntho e 'ngoe", ka mokhoa o tšoanang phetoho ea bokhoba ba lijo e kenyelletsa "lehlakore le lefifi." eo boits'oaro ba eona bo tsamaisanang haholo le mohopolo oa hona joale oa bokhoba ba lijo, bo hlahisitse khatello ea maikutlo le khatello ea maikutlo le maikutlo a nyahamisang ho nts'etsopele le ho boloka phetoho ena ho jang lijo tse monate bakeng sa litlamorao tsa eona tse mpe.

Lithuto tsa liphoofolo, tse qaliloeng ka bongata ke sehlopha sa Bart Hoebel mme joale li ntse li eketseha ka sekhahla, li se li qalile ho hlakisa likarolo tse tobileng tsa kemiso ea lijo, sebopeho, le botsitso mehatong e fetolang mekhoa ea khatello ea maikutlo, ea tlhaho le ea endocrine hammoho le ho fokotsa likarabo tsa hedonic ho lijo le meputso e meng. Leha ho le joalo, mathata a bohlokoa a ntse a le teng. Ho hlokahala mosebetsi o mong hape ho fihlela tumellano mabapi le mekhoa ea tlhahlobo ea tahi ea lijo ho batho. Nchafatso ea mekhoa e joalo e tla ntšetsa pele nts'etsopele ea mefuta e loketseng ea liphoofolo ho ithuta hamolemo likarolo tsa bohlokoahali tsa boteng bona.

​ 

Lintlha tsa bohlokoa tsa lipatlisiso

  • Ho lemalla lithethefatsi ho na le "lehlakore le lefifi" le kenyelletsang ho imoloha maemong a mabe.
  • Lehlakore le ts'oanang le lefifi le ka ba thata ho nts'etsopele ea lithethefatsi tsa lijo.
  • Ho sithabela maikutlo le ho ama lintho tse mpe ho ka baka tšebeliso e feteletseng ea lijo tse matlafatsang.
  • Ho pheta-pheta lijo tse matlafatsang tse phetoang khafetsa ho fetola moputso oa boko le khatello ea maikutlo.

lumela hore baa fokola

Ts'ehetso ea lichelete bakeng sa mosebetsi ona e fanoe ke Setsi sa Pearson sa Alcoholism and Addiction Research, Harold L Dorris Neurological Research Institute, le lithuso DK070118, DK076896, le DA026690 tse tsoang NIH. Litaba ke eona feela boikarabello ba bangoli mme ha ho hlile ha e emetse maikutlo a semmuso a Likolo tsa Naha tsa Bophelo.

Mongolo o botlaaseng ba leqephe

 

Khohlano ea Thahasello

EPZ le GFK ke baqapi hodima patent e kentsoeng CRF1 antagonists (USPTO Applicaton #: # 2010 / 0249138).

 

 

Boitlhotlhollo ba Mohoeletsi: Ena ke faele ea PDF ea mongolo o ngotsoeng ka letsoho o sa amoheloang o amoheletsoeng bakeng sa ho hatisoa. Joaloka tšebeletso ho bareki ba rona re fana ka phetolelo ena ea pele ea mongolo o ngotsoeng ka letsoho. Mongolo o ngotsoeng ka letsoho o tla ba le ho kopitsa, ho kenya lihlopha le ho hlahloba bopaki bo hlahang pele o hatisoa ka mokhoa oa oona oa ho qetela. Ka kopo hlokomela hore nakong ea mekhoa ea tlhahiso ea lihlahisoa e ka fumanoa e ka amang litaba, le litsebiso tsohle tsa molao tse sebetsang koranteng e amanang le eona.

 

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