Ho ba le li-asymmetry tsa Dopamine D2 / 3 Receptor Ho fumaneha ho Dorsal Putamen le Index ea 'Mele ea' Mele ho Batho ba sa sebetseng ba nang le bophelo bo botle (2015)

Neurobiol. 2015 Mar; 24 (1): 90-4. Doi: 10.5607 / en.2015.24.1.90. Epub 2015 Jan 21.

Cho SS1, Yoon EJ1, Kim SE2.

  • 1Lefapha la Bongaka ba Nyutlelie, Sepetlele sa Sechaba sa Bundang sa Seoul Sechabeng, Seoul University University of Medicine, Seongnam 463-707, Korea.
  • 2Lefapha la Bongaka ba Nyutlelie, Sepetlele sa Sechaba sa Bundang sa Seoul Sechabeng, Seoul University University of Medicine, Seongnam 463-707, Korea. ; Lefapha la Lithuto tsa Transdisciplinary, Sekolo sa Graduate sa Saense ea Khokahanyo le Theknoloji, Seoul University University, Seoul 151-742, Korea. ; Litheo tse Tsoetseng Pele tsa Theknoloji ea Convergence, Suwon 443-270, Korea.

inahaneloang

Sistamin ea dopaminergic e kenya letsoho taolong ea takatso ea lijo, e bohlokoa bakeng sa ho boloka boima ba 'mele. Re ile ra hlahloba kamano lipakeng tsa striatal dopamine (DA) D2 / 3 receptor fumaneha le index ea mmele boima (BMI) lithutong tsa banna ba phetseng hantle ba 2511C] raclopride le positron emission tomography. Ha ho le e 'ngoe ea [11C] raclopride binding e ka bang teng (BP) litekanyetso (litekanyetso tsa DA D2 / 3 phumaneho ea li-receptor) maemong a boreleli a (dorsal caudate, dorsal putamen, le ventral striatum) ka hemispheres e ka letsohong le letona e ne e hokahane haholo le BMI. Leha ho le joalo, ho bile le khokahano e nepahetseng pakeng tsa index ea li-asymmetry ka ho le letona ea [11C] raclopride BP ho dorsal putamen le BMI (r = 0.43, p <0.05), ho fana ka maikutlo a hore BMI e kholo e hokahantsoe le phumaneho e phahameng ea li-receptor ka letsohong le letona la dorsal putamen mabapi le leqele ho batho ba sa nonneng. Liphetho tsa hajoale, tse kopantsoeng le liphuputso tse fetileng, li kanna tsa fana ka maikutlo a mekhoa ea methapo ea kutlo e tsamaisang taolo ea phepelo ea lijo ho batho ba sa nona.

Keywords: Dopamine, striatum, index ea boima ba 'mele, asymmetry

SELELEKELA

Takatso ea lijo e amana hantle le mofuta oa 'mele (ke hore, lean vs. obese) mme e lokela ho laoloa ke maikutlo a tlala ho boloka boemo ba tlhaho ba homeostasis. Hypothalamus e 'nile ea nahanoa e le sebopeho sa boko sa mantlha sa taolo ea tšebeliso ea lijo [1]. Leha ho le joalo, ha lijo tse lekaneng li fumaneha, boitšoaro ba ho ja bo hlohlelletsoa haholo ke boleng ba moputso oa lijo tse joalo ka tatso kapa boleng [2], mme boits'oaro bo sa tloaelehang ba ho ja bo bonahala bo amana le tsela e tloaelehileng ea moputso e fetotsoeng ke dopamine (DA) [3].

Ho nona ke e 'ngoe ea litlamorao tsa khaello ea phetoho ea dopaminergic, joalo ka ha ho bonahala ke mokhatlo oa matšoao a nyahamisang le index ea' mele (BMI) [4] le keketseho ea boima ba 'mele kamora ho hlohlelletsa ho tebileng ha boko [5] le meriana ea dopaminergic [6] ho bakuli ba nang le lefu la Parkinson. Ho fumaneha ha receptor ea striatal ea DA D2 / 3 ho bonts'itsoe lihloohong tse batenya haholo, tse neng li hokahane hampe le BMI [7]. Lintlha tsena li fana ka maikutlo a ho kenyelletsa bofokoli ba dopaminergic ho boits'oaro ba ho ja le botenya.

Li-asymomical, tse sebetsang, le tsa metabolic pakeng tsa hemispheres bokong bo phetseng hantle li amohetsoe hohle [8,9]. Haufinyane tjena, ho bile le lithahasello tse ntseng li eketseha ho "asocmetry" ea methapo le mekhatlo ea teng le maemo a amanang le khatello ea maikutlo joaloka khatello ea maikutlo [10] le ho fokotseha hoa kelello [11] li tlalehiloe. Le ha lithuto tse ling li khothalelitse khokahano lipakeng tsa tšebetso ea dopaminergic le BMI tseleng ea ho ja ea ho ja le botenya [12,13], hore na tsamaiso ea dopaminergic e amana joang le phapang e fapaneng ea BMI lithutong tse seng tsa botenya haholo ha e tsejoe. Ntle le moo, ke liphuputso tse fokolang tse ileng tsa leka ho leka setsoalle pakeng tsa dopaminergic asymmetry le BMI.

Phuputso ena e etselitsoe ho khetholla kamano ea DA D2 / 3 receptor phumaneho ea subervions tsa striatal le asymmetry ea eona le BMI lithutong tse seng tsa monko o phahameng li sebelisa [11C] raclopride, radioligand ea DA D2 / 3, le positron emission tomography (PET).

LISEBELISOA LE MEKHOA

Lihlooho

Ba batona ba phetseng hantle ba seng bo-makhopho ba ile ba hapuoa ka papatso. Ha re kenyetse batho ba nang le nalane ea khatello ea methapo kapa ea kelello e kang sethoathoa, hlooho ea hlooho le khatello ea maikutlo. BMI, e baloa joalo ka boima (kg) / bophahamo2 (m2), e fumanoe nakong ea lits'ebetso tsa ho hira, le batho ba batenya haholo, ba hlalosoang e le BMI> 30 kg / m2, ba ne ba qheletsoe ka thoko. Lihlooho tse mashome a mabeli a metso e mehlano tsa banna ba phetseng hantle ba sa fetoleng botenya (ho bolela (± SD) lilemo tsa 23.3 ± 2.9 y [18-29 y]; ho bolela BMI 22.0 ± 2.5 [17.6-28.0]; bolele boima ba 'mele 67.5 ± 8.5 kg [54.0-85.0 kg ] o nkile karolo lithutong kamora ho fana ka tumello e ngotsoeng e nang le tsebo (Lethathamo 1). Lihlooho tsohle li ne li fuoa letsoho le letona. Lithuto tse hlano e ne e le batho ba tsubang, ba ileng ba botsoa hore ba se ke ba fetola mekhoa ea bona ea ho tsuba pele ho scan.

Lethathamo 1    

Taba ea palo ea batho

PET scan ninemanga.com

Lits'oants'o tsa PET li fumanoe ho sebelisoa scan ninemanga ea LG ECAT EXACT 47 PET (CTI / Motorola, Knoxville, TN, USA) lithutong tsa 15 kapa sehlahlo sa GE Advance PET (GE Advance PET, Waukesha, WI, USA) lithutong tsa 10. Liprotheine tsa ho fumana litšoantšo li ne li ts'oana le li-scanner tse peli mme litšoantšo li ile tsa hlophisoa bocha li sebelisa likhakanyo tse khothaletsoang ke moetsi oa sekepe ka seng. Re ile ra sekaseka litšoantšo tsa lithuto tsohle joalo ka lere le le leng. Kamora ho hlahlojoa ha 10-min, [11C] raclopride e fanoe ka syringe ea 48-ml (tšebetso e tloaelehileng ea 29.3 ± 16.8 mCi) mme e tsamaisoa ke pompo e sebelisoang ka komporo e nang le kemiso ea nako e tsitsitseng: ka nako ea 0, lethal dose la 21 ml le ile la fuoa holim 'a 1 min' me joale sekhahla sa infusion se ne se fokotsehile ho 0.20 ml / min mme e ne e bolokoa nako e setseng. The bolus to infusion rate ratio (Kbol) e ne e le 105 min. Protocol ena e ile ea khethoa ho ipapisitsoe le ts'ebetso ea ts'ebetso e ntlafalitsoeng ke Watanabe le basebetsi-'moho le uena, e neng e tsejoa e le e nepahetseng ho theha mmuso oa tekano ka metsotso e ka bang 30 kamora ho qala ts'ebetso ea radioligand [14].

Lintlha tsa tlhahiso ea tlhahiso li ile tsa bokelloa ka mokhoa oa likarolo tse tharo bakeng sa 120 min ha lifoto tsa 30 tse latellanang tsa nako e ntse e eketseha (3 × 20 s, 2 × 1 min, 2 × 2 min, 1 x 3 min, and 22 × 5 min . Litšoantšo tsa PET tse fumanoeng li sebelisa skena sa Nokia ECAT EXACT 47 PET li ile tsa etsoa bocha ka ho sebelisa filthara ea Shepp-Logan (khafetsa khafetsa = 0.35 mm) mme ea hlahisoa ka materx a 128 x 128 mm (boholo ba pixel = 2.1 × 2.1 mm ka bophara ba 3.4 mm). Litšoantšo tse tsoang ho GE Advance PET scanner li ne li hahiloe bocha ka 128 × 128 matrix (boholo ba pixel = 1.95 × 1.95 mm ka sephara sa 4.25 mm) ba sebelisa filthara ea Hanning (khaolo e khaotsoeng = 4.5 mm).

Tlhahlobo ea litšoantšo

Phumano ea boemo ba phomolo ea DA D2 / 3 receptor e ile ea hlahlojoa ho sebelisoa litšoantšo tsa PET tsa 30-50 min kamora [11C] ente ea raclopride, eo ka nako eo tlamo ea radioligand e neng e lekana. Liforeimi tse 'ne tsa PET ka nako ena li ile tsa hlophisoa tse ling hape tsa fuoa sepheo sa ho ngolisa ka botebo litšoantšo tsa MR le phetoho sebakeng se lekantsoeng sa stereotaxic ka mokhoa o ikhethileng o amanang le template ea MNI. [11C] Raclopride binding mohlomong (BP) joalo ka tekanyo ea ho fumaneha ha DA D2 / 3 e ile ea baloa ka mokhoa o bohlale oa voxel ho hlahisa litšoantšo tsa BP tsa parametric, a sebelisa cerebellum joalo ka sebaka sa litšupiso, joalo ka (Cvoxel-Ccb) / Ccb [15], moo Cvoxel ke ts'ebetso ho voxel e ngoe le e ngoe Ccb ke ketso ea bohlokoa ka ho chatsi. Mefuta ea lithahasello (ROIs) e ne e huleloa ka letsoho linthong tse bonojoana tsa bokong ba MR (setšoantšo sa Colin) ka letsohong le letšehali le ka ho le letona (dorsal putamen, dorsal caudate, le ventral striatum). Meeli ea li-ROI e ile ea hlakoloa ho latela mokhoa o neng o ntse o ntlafalitsoe pele [16]. U sebelisa li-ROI tsena, boleng ba BP maemong a tlase bo ile ba tlosoa litšoantšong tsa BP ka bomong (Feie. 1). Hape, index ea asymmetry ea BP (AIBP) e baliloe e le (letsohong le letšehali) / (le letona + ka ho le letšehali) bakeng sa subregion e ngoe le e 'ngoe ea litoropo, e le hore boleng bo hlakileng bo bonts'a AI e phahamengBP ka lehlakoreng le letona le amanang le le letšehali. Likamano tsa [11C] raclopride BP le AIBP ka BMI e ile ea lekoa ka ho hokahanya pearson e nang le marang-rang a mabeli le SPSS 16.0 (Chicago, Illinois).

Feie. 1    

Mohlala oa parametric [11C] raclopride BP setšoantšo ka taba e le 'ngoe (Ka ho le letšehali; fetotsoe ho sebaka se tloaelehileng sa MNI) le' mapa oa ROI o hlalositsoeng pele bakeng sa striatum (Ka ho le letona).

LIPOTSO

[11C] Raclopride BP ho e 'ngoe ea litumellano tse tšeletseng tsa striatal e ne e se na kamano ea bohlokoa le BMI (r = -0.25, p = 0.23 ka ho le letšehali dorsal putamen; r = -0.14, p = 0.52 ho putamen e nepahetseng ea dorsal; r = -0.22 , p = 0.30 ka ho leqeleng dorsal caudate; r = -0.18, p = 0.40 ka letsohong le letona la dorsal caudate; r = -0.18, p = 0.40 ka ho leqeleng la ventral striatum; r = -0.19, p = 0.36 kahareng e nepahetseng striatum). Leha ho le joalo, ho bile le khokahano e ntle pakeng tsa AIBP ka "dorsal putamen" le "BMI" (r = 0.43, p <0.05) (Feie. 2), ho fana ka maikutlo a hore BMI e kholo e amana le ho fumaneha ha li-receptor tse phahameng tsa D2 / 3 sebakeng se nepahetseng sa "dorsal putamen" ka lehlakoreng le letšehali. The AIBP ka dorsal caudate le ventral striatum li ne li sena khalemelo ea bohlokoa ka BMI (r = 0.01, p = 0.98 ka har'a dorsal caudate; r = -0.13, p = 0.53 ho ventral striatum).

Feie. 2    

Kamano lipakeng tsa AIBP le BMI ka har'a dorsal putamen. Lenane la asymmetry la BP (AIBP) e ne e baloa e le (ka ho le letona-ho le letšehali) / (ka ho le letona + ka ho le letšehali), e le hore boleng bo nepahetseng bo bontše AIBP e phahameng ka lehlakoreng le letona ho ea ka ho le letšehali (r = 0.43, p <0.05; tse peli ...

TŠOHLOA

Thutong e teng hona joale, re hlahlobile kamano ea ho fumaneha ha DA D2 / 3 receptor sub subionions le asymmetry ea eona le BMI lithutong tsa banna tse phetseng hantle tse sa sebeliseng botenya tse sebelisang [11C] peisong ea raclopride PET. Ho ne ho se na kamano e tobileng pakeng tsa ho fumaneha ha li-striatal D2 / 3 receptor le BMI lithutong tsa rona tse seng tse batenya haholo. Sena se lumellana le tlaleho ea Wang et al. [7] sebelisa [11C] peisong ea raclopride PET. Leha ba fumane khokahano e fapaneng lipakeng tsa ho fumaneha ha li-striatal D2 receptor le BMI ho batho ba batenya, ha ho khokahano e joalo e bonoang taolong e se nang botenya. Leha ho le joalo, re fumane mokhatlo oa BMI o nang le asymmetry e ka letsohong le letona ho D2 / 3 receptor fumaneha ka har'a dorsal putamen lithutong tse se nang botenya.

E le karolo ea tloaelo ea ho ithuta le ho fumana moputso, striatum ke karolo ea mantlha ea potoloho ea dopaminergic neuronal e arolang matla a matlafatsang a lijo le meputso e meng, ho kenyeletsoa le lithethefatsi tse hlekefelitsoeng ke batho. Phapang e sebetsang pakeng tsa dorsal le ventral striatum ho khothalletso ea lijo ho tlalehiloe. Ketso ea dorsal striatum e ne e bohlokoa le ho feta bakeng sa boits'oaro bo phetseng ka boeona le monate oa eona [13], ha li-striatum tsa kahare li ne li tebile haholo bakeng sa maemo a lijo le tebello ea ts'usumetso ea lijo tse fuoeng [17]. Hape, lithuto ho litoeba [12] hammoho le batho [18] e khothalelitse likarolo tse fapaneng tsa karolo tsa DA lithutong tsa kahare le kahare ho laola phepelo ea lijo. Khopolo e ne e le hore DA ho dorsal striatum e bohlokoa ho boloka litlhoko tsa caloric bakeng sa ho pholoha, ha DA ho ventral striatum e kentse letsoho meahong e ruisang ea lijo. Sena se ka hokahanngoa, ka kotloloho kapa ka kotloloho, le kamano lipakeng tsa BMI le asymmetry e D2 / 3 receptor fumaneha ka har'a dorsal putamen lithutong tsa rona tse seng tse nang le botenya, ka hore ts'ebeliso ea lijo ka boima ba batho ba tloaelehileng e kanna ea laoloa ke litlhoko tsa caloric, eseng ka thepa e matlafatsang ea lijo.

Bopaki bo bongata bo fana ka maikutlo a hore boko ba motho bo entsoe ka mokhoa o sebetsang 'me bo sebetsa hamorao. Ha li-asymmetries ho DA le li-neurotransmitter tse ling li tlalehiloe ka kelellong ea motho oa postmortem [19], mekhoa ea ho nahana ka limolek'hule le e sebetsang e hlahisitse bopaki bakeng sa li-asymmetries tsa methapo ea kelello bokong ba motho bo phelang, e fana ka menyetla e mengata ea ho hlahloba ka kotloloho kamano e pakeng tsa boko le boits'oaro ba motho le ts'ebetso. Lithuto tsa PET le SPECT (li-single-Photon emission computed tomography) lithutong tse phetseng hantle li bontšitse li-hemispheric asymmetries ho matšoao a dopaminergic ho striatum, ho kenyelletsa le ho fumaneha ha DA D2 / 3 receptor [20], Letsoalo la lipapatso tsa DA [21], le bokaholimo ba DA [22]. Le ha lithuto tsena li tlalehiloe ka leeme la palo ea baahi ka ho lekana le boleng bo phahameng ba radioligand ka ho le letona ha ho bapisoa le striatum e tlohetsoeng ho latela litekanyetso tsa sehlopha, ho bile le phapang e kholo, eseng feela ka boholo, empa hape le ka lehlakoreng la asymmetry. Liphoofolong, ho bontšitsoe phapang e fapaneng pakeng tsa dopaminergic asymmetry le ho bolela esale pele, liphapang tse fapaneng tsa boitšoaro ba sepakapaka le khatello ea maikutlo, hammoho le monyetla oa ho sithabela ha methapo ea methapo le kutlo ea lithethefatsi [23]. Ho batho, kamano lipakeng tsa mesebetsi ea kelello le sebopeho sa asymmetry ho DA D2 / 3 receptor fumaneha [24]. Seo re se fumaneng se senola kamano e kholo lipakeng tsa BMI le tataiso le boholo ba asymmetry lithutong tsa striatal D2 / 3 receptor fumanehang lithutong tse seng tse batenya haholo.

Lithutong tsa rona tse seng tse batenya haholo, BMI e kholo e ne e hokahane le ho fumaneha ka mokhoa o phahameng oa D2 / 3 ho fumaneha ka letsohong le letona la dorsal putamen ka lehlakoreng le letšehali. Sena se fapane le thuto e fetileng e bonts'ang hore ts'usumetso e kholo ea ts'usumetso e ntle e ne e amahanngoa le ho fumaneha ho phahameng ha D2 / 3 receptor ho setho se letšehali ho setamen e nepahetseng [24]. Tsela e fapaneng le ea asymmetry e ka utloisa lits'ebetso tse fapaneng tsa methapo e tsamaisang taelo ea lijo har'a batho ba batenya le ba sa batleng haholo.

Lithuto tsa rona li na le meeli e 'maloa. Taba ea pele, lithuto tsa rona tse tharo li ne li e-na le BMI e phahameng ho feta 25 li-BMI tsa bona li ka aroloa ka lihlopha tse feteletseng (23.0-24.9) kapa botenya (≥25.0) ho latela maemo a Asia. Leha ho le joalo, sehlopha sa rona sa lithuto se entsoe ka batho ba baholo ba phetseng hantle ba banyenyane mme re nahanela hore BMI ha e amane feela le boima ba mafura empa le ka tekanyo e tlase, hape le kaho ea 'mele, re thathamisitse lithuto tseo e le lithuto tse se nang boima bo feteletseng ka ho latela maikutlo eaeletsi ea litsebi tsa WHO [25] e khothalelitseng ho boloka mekhahlelo ea hajoale ea machaba ea botena (≥30.0). Ho kenyelletsa phello e ka bang teng ea ho kenyelletsa moeli oa lithuto tse boima boithuto thutong ea rona ea hona joale, re lekile tlhahlobo ea rona ea lipalo le lithuto tsa 22 kamora hore re qhele lithuto tseo tse tharo. Liphetho li bontšitse khokahano e phahameng ho feta tlhahlobo e entsoeng ka lithuto tsa 25 mme e bonts'itse boemo ba bohlokoa bo eketsehileng (r = 0.55, p = 0.008). Taba ea bobeli, kaha [11C] raclopride binding e ameha ka tlholisano le endo native DA, ho thata ho tseba hore na asymmetry ea DA D2 / 3 phumaneho ea li-receptor e emela boemo ba methapo ea methapo kapa ba maemo a itseng a DA. DA D2 / 3 e tlama joalokaha e lekantsoe ke [11C] raclopride e rarahane kahare ho libaka tse bataletseng tse nang le litlamo tse phahameng ho dorsal striatum ho feta ho ventral striatum [26]. Kahoo, [11C] raclopride PET e kanna ea se na kutloelo-bohloko e lekaneng ho bona liphapang tse poteletseng le tse sa bonahaleng tsa ho fumaneha ha D2 / 3 receptor ho proral striatum. Boithuto bo tsoelang pele bo hlokahala ho hlahloba tsamaiso ea dopaminergic libakeng tse nang le maoto le maoto a pharalletseng a sebelisang li-radioligand tse nang le tumellano e phahameng le khethollo ea li-receptor tsa DA D3. Kamora nako, sampole e nyane haholo e neng e le ea banna feela, e sitisang kakaretso ea se re se fumaneng.

Qetellong, sephetho sa hona joale se fana ka maikutlo a kamano pakeng tsa BMI le sebopeho sa asymmetry ho DA D2 / 3 receptor fumaneha ka har'a dorsal putamen ho batho bao e seng ba batenya, hoo BMI e kholo e amanang le ho fumaneha ho phahameng ho fumanehang ka har'a dorsal putamen e nepahetseng ho leqeleng. Ho joalo, leseli le amanang le neurochemical lateralization ea DA ha e fane feela ka maikutlo a ho bolela esale pele hore na kalafo ea botenya e tla qala kapa e be nts'etsopele ea mafu a amanang le ho ja lijo joalo ka anorexia nervosa le bulimia nervosa ho bohlokoa le ho feta, e tla sebetsa e le biomarker ho bolela esale pele kalafo ea kalafo ho mafu ao. Liphetho tsa rona, li kopantsoe le liphuputso tse fetileng, li kanna tsa fana ka maikutlo a mekhoa ea methapo ea kutlo e tsamaisang taolo ea phepo ea lijo ho batho ba sa nona. Tsena li ka ba le litlamorao tsa bohlokoa bakeng sa kutloisiso le ho noha liphapang tsa batho ka bomong ho arabeleng meputsong e amanang le lijo le nts'etsopele ea "botenya" ho tsoa ho "naha e sa nonneng."

LINTLHA TSA LITLHAHO

Phuputso ena e ne e tšehelitsoe ke lithuso tse tsoang ho National Research Foundation ea Korea (NRF-2009-0078370, NRF-2006-2005087) e tšehelitsoeng ke Lefapha la Saense, ICT le Meralo ea Bokamoso ea Rephabliki ea Korea le thuso ea R & D ea Korea Healthcare Technology R&D Morero, Lekala la Bophelo le Boiketlo, Rephabliki ea Korea (HI09C1444 / HI14C1072). Phuputso ena e boetse e tšehelitsoe ke thuso e tsoang Seoul National University Bundang Hospital Fund Fund (02-2012-047).

Mongolo o botlaaseng ba leqephe

 

Re bolela hore ha ho na likhohlano tsa phaello bakeng sa sengoloa sena.

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