Dopamine D2 nabatara na nnyefe nke striatopallidal na ịṅụ ọgwụ ọjọọ na oke ibu (2013)

Curr Opin Neurobiol. 2013 Mee 28. pic: S0959-4388 (13) 00101-3. doi: 10.1016 / j.conb.2013.04.012.

Kenny PJ, Voren G, Johnson PM.

Source

Labo laboratory nke Behavioral and Molecular Neuroscience, Ngalaba Na-ahụ Maka Ọkpụkpụ Ala, Sclọ Ọrụ Nyocha Scripps, Jupiter, FL 33458, USA; Ngalaba Neuroscience, Researchlọ Ọrụ Nyocha Scripps, Jupiter, FL 33458, USA; Kellogg School of Science and Technology, The Scripps Research Institute, FL, USA. Adreesị kọmputa: [email protected].

nkịtị

Ọgwụ ọjọọ riri ahụ na oke ibu na-ekerịta isi ihe ndị na-arịa ọrịa na-egosipụta na ha nwere ike ibelata ọgwụ ma ọ bụ oriri nri ka na-adịgide n'agbanyeghị nsonaazụ na-adịghị mma.. Ihe akaebe na-apụta na-egosi na usoro ahụ na-akọwa nsogbu ndị a nwere ike ibilite, ruo ogo ụfọdụ opekata mpe, site na usoro neurobiological na-eme ka a na-ahụkarị. Karịsịa, nsogbu abụọ ahụ jikọtara ya na onye na-anabata Dopamine D2 receptor (D2R) availability, ikekwe na-egosipụta na ha mgbada etolite etolite na elu okwu. Na striatum, D2R na-egosipụta ihe dịka ọkara ọkara nke spiny projection neuron (MSNs), striatopallidal neurons nke ụzọ a na-akpọ 'ntụgharị'. A na-egosikwa D2Rs n'ụzọ doro anya na njedebe dopamine na na interneurons cholinergic. Hedị ọdịiche a nke okwu D2R egbochila mgbalị, na-ejikarị usoro ọgwụgwọ ọdịnala eme ihe, iji ghọta onyinye ha na ọgwụ mmanye ma ọ bụ oriri nri.

Mmuta nke teknụzụ mkpụrụ ndụ ihe mere iji mepụta ọnụ ọgụgụ dị iche iche nke neurons, tinyere ngwaọrụ optogenetic na chemicogenetic iji mezie ọrụ ha, ewepụtala ụzọ isi wepụ ihe dị iche iche na onyinye chochogic iji gbakọọ aka. N'ebe a, anyị na-enyocha akaebe na-adịbeghị anya na-akwado ọrụ dị mkpa maka akara D2R nke striatal na iji ọgwụ ọjọọ na ị foodụ nri. Anyị na-elebara anya nke ọma maka ntule ọgbụgba ọkụ nke striatopallidal na ọrụ ha na mmanye ịzaghachi nri na ọgwụ. Na mmechi, anyị na-achọpụta ohere maka nyocha oke ibu n’ọdịnihu site na iji usoro ndị ama ama dị ka ihe na-agwọ ọrịa, yana na-enyekwa aka na ngwa ọrụ ọhụụ iji megharia ọrụ nke ụfọdụ ndị na - eme ihe ike iji ghọta oke onyinye ha riri ahụ.

Ọnwụ nke nchịkwa nri na oke oke mmadụ ndị na-agbasi mbọ ike ma gharakwa ịchịkwa oke ahụ ha bụ otu ihe n'ọtụtụ ụzọ maka ọgwụ mmanye ị hụrụ na ndị riri ahụ.1,2]. Dabere na myirịta ndị a, a kọwaala ya na usoro analogous ma ọ bụ ọbụna usoro imekọrita nwere ike iso kpalite agwa ndị a.1,3-6]. N'ụzọ na-akpali mmasị, ọmụmụ ihe onyonyo mmadụ ekwupụtala na nnata dopamine D2 nnata (D2R) dịkarịsịrị ala na ọnọdụ nke oke ndị metụtara mmadụ dabere [7 ••, 8 ••, 9]. A na-ahụta mmezi yiri nke ahụ dị na D2R na ndị na-arịa nsogbu nsogbu ihe riri ahụ [10-12]. Ndị mmadụ n'otu n'otu nwere TaqIA A1 allele, nke na - arụpụta mbelata ~ 30 – 40% na striatal D2Rs ma e jiri ya tụnyere ndị na - adịghị ebugo ihe niile13-15], na-anọchi anya ndị buru ibu na oke ụba ndị bi na ọgwụ ọjọọ [7 ••, 8 ••, 9, 16-18]. N'ihi ya, mgbanwe na D2R nke nwere ike nwere ike inye aka na ntoputa iri nri ma ọ bụ ị drugụ ọgwụ ọjọọ na oke ibu na iri mmadụ ahụ, n'otu n'otu.

Ndị na-anabata Dopamine D2 na mgbakwunye na oke ibu

N’oge na-adịbeghị anya, anyị nyochara ma omume iri nri dị ka mmanye, dịka nri siri ike nke na-egbochi ntaramahụhụ mmetụta (ma ọ bụ gosipụta ntaramahụhụ) na-apụta na oke iji nweta oke nri nke na-akpali hyperphagia na oke ibu. Anyị nyere oke maka ihe na-akparaghị ókè ị ga-enweta kwa ụbọchị "nri a na-aeterụ kọfị" nke mejupụtara nri ngwa ahịa ike nri dị oke ọnụ ahịa dị na ka ọ dị n'ọtụtụ cafeterias na igwe na-ere mmadụ, dị ka cheesecake na anụ ezi, nke na-eme oke ibu na oke oke. dị ka ụmụ oke ha yiri19,20]. Ka oke ndị a na-abawanye ibu, ha gosipụtara ụdị nri na-egbochi mmụọ ọjọọ nke ịkọwapụta mmalite ga-adị mma n'anya [21 ••]. A na-ahụta ụdị mmanye a na oke na-aza maka oke ọgwụ cocaine mgbe ogologo oge iji nweta ọgwụ ahụ [22,23 ••].

Ina mgbakwunye na nri ha riri oke na ịmanye ihe dịka ịta nri, oke oke nri kọfutọ belatakwala ngosipụta D2Rs na striatum [21 ••]. Ya mere anyi tughariro ma udiri anumanu D2Rs nwere ike mee ka mmuta nke mmanye a na-eri di ka nri agwo oria.. N'iburu n'uche na lentivirus na-enwe obere ego nke ụgbọ njem retrograde, usoro a siri ike na postsynaptic D2Rs na neurons dị na ebe a, ọ bụghịkwa ndị nọ na ntanetị na ntinye dopamine, anyị mere ka mmegharị a [21 ••]. Ọnọdụ mmerụ ahụ D2R nke Striatal mere n'ezie ka ọpụpụ nke mmanye mmanye dị ka oriri ike nri nwere nnukwu ike. Agbanyeghị, ụdị mmerụ ahụ D2R emeghị ka ọ bụrụ mmeghachi omume mmanye maka ịkpa oke, na-atụ aro na ụmụ anụmanụ ga-enwetara njikọta nke ọnụ ụzọ D2R na ọbụlagodi ikpughere ihe oriri dị oke ọnụ tupu nchịkọta ihe apụta [21 ••]. N'ụzọ dị ịtụnanya, enwebeghị ikelele mmetụta nke na-akpaghasị usoro mgbaàmà D2R na usoro mmanye.

Nkesa Striatopallidal na ugwo ogwu

Isi ihe nyocha nke MSN na-ekwu maka 90 – 95% nke neurons na ebe dị iche iche. A na - ekekarị MSN n'ime mmadụ abụọ nwere uche, akpọrọ neurons nke nwere ụzọ na - apụtaghị ìhè, ọ bụ ezie na njirimara a bụ n'ezie ihe na - eme ka mmekọrịta nke MSN ghara ịdị nfe; dịka ọmụmaatụ, lee Refs. [24-26]. To duzie uzo MSNs, nke a makwaara dị ka striatonigral neurons, na-egosipụta dopamine D1 receptors (D1Rs) na ngozi sitere na ụzọ ahụ wee ruo na substantia nigra pars reticulata (SNr) na mpaghara ime nke palidus globus (GPi). Nzọ na-enweghị isi, MSNs, makwaara dị ka striatopallidal neurons, na-ekwupụta D2Rs na ntanetị n'ụzọ na-apụtaghị ìhè site na ebe dịpụrụ adịpụ ruo SNr / GPi site na mpụga nke pọdidus globus (GPe) na subthalamic nucleus (STN).

Ationrụ ọrụ nke intantiral neurons na-akwalite omume ntụpọ ebumnuche, ebe ndị na - arụ ọrụ na - enwe mmetụta na - egbochi ihe. Na mgbakwunye na neurons striatopallidal, cholinergic interneurons na striatum na-ekwupụtakwa D2Rs [27, 28 ••, 29]. Ihe a sitere na ngosipụta D2R na striatum nwere mgbalị siri ike iji ghọta usoro nke D2Rs nwere ike isi nye aka na mmepe nke ọgwụ mmanye na iri nri. Agbanyeghị, mmepe nke ụmụ oke na-ekwupụta na Cre recombinase n'ime ọnụ ọgụgụ nke neurons, tinyere mpụta nke usoro nke dabeere na Cre iji chịkwaa ọrụ nke na-egosipụta neurons, dị ka optogenetik [30 •] na ndị na-anabata ndị na-anata ihe pụrụ iche rụrụ ya n’aka ndị nrụpụta ọgwụ (DREADDs).31,32 •], na-amalite ịkọwa ụtụ nke ọnụ ọgụgụ dị iche iche nke mkpụrụ ndụ na - akpata ọgwụ na nri. Dika ichotara n'okpuru, uzo ihe omuma ndi a na-ekpughere onyinye di nkpa nke D2-igosiputa neurons na intanum iji megharia ihe mkpali na ugwo nke ihe ogwu riri ahu, ma na-emegide ntoputa nke uzo ihe nri ma obu mmanu nri.

Striatopallidal neurons mana ọ bụghị cholinergic interneurons gosipụtara ndị na-anabata adenosine 2A (A2AR). Dabere na eziokwu a, Durieux na ndị ọrụ ibe ya jiri A2AR-Cre ụmụ oke iji chụpụ ngosipụta nke diphtheria toxin receptor na (DTR) na striatopallidal neurons, wee tinye anụmanụ ọrịa diphtheria toxin iji kpatara ọnya ọnya nke dị iche iche [33 ••]. Ngha mkpụrụ a kpaliri hyperlocomotion dị ukwuu na mmụba dị ịrịba ama na mmetụta na-akwụghachi ụgwọ nke amphetamine [33 ••]. Lobo na ndị ọrụ ibe mechara kọwaa na nhichapụ nke metụtara Tropomyosin metụtara kinase B (TrkB), onye na-anabata ihe na-akpata ụbụrụ neurotropic factor (BDNF), na striatonigral belata akụrụngwa na-akwụghachi ụgwọ nke cocaine, ebe TrkB kụrụ aka na D2-na-egosipụta MSNs kwalite ụgwọ ọrụ cocaine [34 ••]. Ọzọkwa, TrkB kụrụ aka na D2-na-ekwupụta MSNs mụbara nchekwube ha, na mkpali nke optogenetic nke neuron ndị a na-ebelata ụgwọ ọrụ cocaine.34 ••]. N'oge na-adịbeghị anya, Neumeier na ndị ọrụ ibe ya jiri DREADDs iji gosipụta na mgbochi nke impontigral neurons gbochiri ntopute nke azịza amamịghe amphetamine, ebe mgbochi nke striatopallidal neurons kwalitere iji uche eme ihe [35 •]. Nchọpụta ndị a na-egosi na akara mgbama nke striatopallidal na-emegide usoro metụtara ụgwọ ọrụ ma nwee ike ichebe ihe metụtara neuroplasticity riri ahụ.

Nkeso Striatopallidal yana mmanye ogwu

Ihe nchoputa ohuru gosiputara ihe putara imeghari ihe nzipu nnabata “ngbanwe” - ike ikwusi iza ya mgbe inogide akparamagwa ya nwere ike ibute nsonaazụ ojoo - ọgba aghara nke nwere ike ime ka ịpụta ihe. Kravitz na ndị ọrụ ibe chọpụtara na optogenetic mkpali nke striatopallidal neurons rụpụtara ntaramahụhụ yiri nke ụmụ anụmanụ, gosipụtara na izere mkpali anya [36 •]. N'iji nkwupụta mkpụrụ ndụ nke tetanus toxin gbochie ntọhapụ neurotransmitter, Nakanishi na ndị ọrụ ibe chọpụtara na ọgba aghara nke akara ịrịba ama nke kwụsịrị ikike ụmụ anụmanụ ịmụtakwu omume izere (na-ezere gburugburu ebe ọkụ eletrik na-enyefe)37 ••]. N'iji usoro a metụtara tetanus toxin, Nakanishi na ndị ọrụ ibe chọpụtakwara na ọgba aghara nke nnyefe mbufe intropallidal na-ebute akparamagwa dị ka ụmụ oke ebe ha na-enweghị ike ịgbanwe omume ha na nzaghachi maka nsogbu ọrụ.38]. Nchọpụta ndị a kwekọrọ na ọrụ maka ndị na - ahụkarị akwara ma ọ bụrụ na arụ ọrụ mgbanwe, omume dị mkpa na - eme ka ọ bụrụ mgbanwe dị n'etiti atụmatụ omume dị iche iche iji bulie ohere ụgwọ ọrụ [38]. N'ihi ya, iji ọgwụ eme ihe na-akpata ọgwụ ikuku na-akpata na -eme ka ọrụ ha belata nwere ike ịkpalite mgbanwe, nke a na-achọsi ike, ka omume ị -ụ ọgwụ ọjọọ. N'ikwekọ na nke a nwere ike, Alvarez na ndị ọrụ aka egosiputala n'oge na-adịbeghị anya na ike synaptik na D2-na-ekwupụta MSNs na ngụkọta akụrụngwa na-eme na ụmụ oke nwere akụkọ ntolite nke nchịkwa onwe cocaine39 ••]. Nkwado synaptik a nwere njikọ chiri anya na ntoputa nke ọgwụ cocaine na-akpata [39 ••]. Ọzọkwa, DREADD-mede mgbochi, ma ọ bụ mkpali anya, nke striatopallidal neurons mụbara ma ọ bụ belata, n'otu aka ahụ, ịmanye-dị ka nzaghachi maka cocaine na ụmụ oke [39 ••].

Nkesa Striatopallidal na iri nri

Tnchoputa hese dị n’elu na-enye ihe akaebe na-akwado nkwado maka isi ọrụ maka D2- na-ekwupụta MSNs na ịzaghachi cocaine mmanye. Nke a na-ewelite ajụjụ dị mkpa nke ma ọnụnọ ndị ọgụ mkpụrụ osisi na - etinyekwa aka na mmanye oriri nke oke oriri oke. N'ụzọ dị ịtụnanya, a nyochabeghị ohere a ma nke a na-anọchite anya nnukwu oghere ihe ọmụma. Ka o sina dị, enwere hints na-akpali akpali na nke a nwere ike ịbụ n'eziokwu. Dịka anyị kwurula, A2ARs na-egosipụta nke ọma site na striatopallidal neurons [40]. Ya mere, ndị ọrụ ọgwụ na-agbanwe agbanwe ihe omume A2AR ka a na-atụ anya na ha ga - emetụta ndị na - ekwu okwu A2AR nnyefe nke AXNUMXAR, nke na - abawanye nnyefe striatopallidal, belata oriri nke ma nnukwu nnabata na oke gbue na oke.41], na ibelata nrụnye maka nri nri [42]. N'aka ozo, mgbochi nke ogwu nke A2A ndị na-anabata ndị ọbịa na-abawanye oriri a na-enye nri ngwa ngwa mgbe a na-elekọta naanị ya, na mgbakwunye nri na-eweta ọrịre na-akpata site na nchịkwa intra-accumbens agonist (DAMGO) [43]. TNchọpụta a na-echetara dị na-echetara mmetụta nke mgbochi mkpali ụzọ na-ekwesịghị ịdị na ụgwọ ọrụ ọgwụ akọwara n’elu, ma na-atụ aro na D2-na-egosipụta ụzọ ụzọ MSN nwere ike isi chịkwaa nri oriri n'otu ụzọ ha si achịkwa ụgwọ ọrụ ọgwụ.

Mkpebi na usoro ọdịnihu

Nchọpụta ndị a dị n’elu na-akwado usoro iji mee ka ọgwụ ike ogologo oge ma ọ bụ oke ibu na-eme ka azịza ndị na-agbanwe agbanwe na neurons striatopallidal, na-eme ka usoro ngbanwe na-aga n'ihu na-enwewanye ike na ọdịdị. Yabụ, otu ihe dị mkpa na ọrụ ga-eme n'ọdịnihu na nchọpụta oke ibu ga-akọwa oke ọrụ maka ọgụ mkpụrụ ọgụ na njikwa mmụba nke iri nri. Ọ ga-adịkwa mkpa ịchọpụta ma imetu ụdị nri a na-adịghị agbanwe agbanwe nwere ike bụrụ ntọala nke ụzọ dị mma iji wee belata ịdị ogologo oge. Mpaghara nyocha ọzọ nke nwere ike ịchọrọ oke ma ubi ihe riri ahụ na oke oke ibu ga-akọwapụta ọrụ dị mma maka ndị na-anabata D2 dị na cholinergic interneurons. Mkpochapu nke cholinergic interneurons na striatum na-ewepụ utịpị ọgwụ cocaine [44]. Ndị na-anabata D2 na cholinergic interneurons na-achịkwa njiri mara njiri nke ịgbagbu mkpụrụ ndụ ndị a na nzaghachi na mkpali ndị nwere ume site na mmekọrịta na nicotinic acetylcholine receiptors (nAChRs) dị na ngalaba isi mmiri dopamine [28]. N'ụzọ na-akpali mmasị, ịlụ ọgụ nke nAChRs na-egbochi mmụba nke cocaine na oke maka oke ohere inweta ọgwụ ahụ [45]. N'ihi ya, ọ ga-adị mkpa ikpebi ma ọ bụrụ na akara ngosi nke D2 na intanetị cholinergic interneuron na-enyekwa aka na ọgwụ mmanye na akparamagwa nri.

Isi

  • Ibu oke na ihe riri ya aru na -eme ka ohere nnabata nke D2 dị na draatum.
  • Ndị na-anabata D2 na-achịkwa iri nri.
  • DREADDs na optogenetics kpughere otu ọrụ dị mkpa maka striatopallidal neurons na iji ọgwụ mmanye eme ihe.

Acknowledgements

Enyemaka a sitere na Institutelọ Ọrụ Mba Na-ahụ Maka Iji Ọgwụ Ọjọọ (DA020686 na PJK) kwadoro ọrụ a. Nke a bụ nọmba ihe odide 23035 sitere na Researchlọ Ọrụ Nnyocha Scripps.

Ihe odide ala

Nkwupụta Nkwupụta Onye Nkwusa: Nke a bụ faịlụ PDF nke ihe odide a na-akwadoghị nke akwadora maka mbipụta. Dịka ọrụ nke ndị ahịa anyị, anyị na-enye nsụgharị mbụ nke ihe odide ahụ. Ihe odide a ga-enwe ngbanwe, nhazi, na nyochaa ihe kpatara ya tupu e bipụ ya na nke ikpeazụ ya. Biko rịba ama na n'oge mmepụta usoro njehie nwere ike ịchọta nke nwere ike imetụta ọdịnaya ahụ, ihe niile gbasara iwu na-emetụta akwụkwọ akụkọ ahụ.

Ntughari na akwukwo a choro

Akwụkwọ ndị nwere mmasị dị mkpa, nke e bipụtara n'ime oge nyochaa, dịka:

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