Ho fumanoa ha Novelty Relies ho Dopaminergic Signaling: Bopaki bo tsoang ho Apomorphine's Impact ho Novelty N2 (2013)

PloS One. 2013; 8 (6): e66469.

E phatlalalitsoe marang-rang 2013 Jun 20. doi:  10.1371 / journal.pone.0066469

Mauricio Rangel-Gomez,1,* Clayton Hickey,1 Mona van Amelsvoort,2 Pierre Bet,3 'me Martijn Meeter1

Stefano L. Sensi, Mohlophisi

Sehlooho sena se bile teng e boletsoeng ke lihlooho tse ling ho PMC.

Eya ho:

inahaneloang

Leha ho na le lipatlisiso tse ngata, ho ntse ho sa hlaka haeba dopamine e kenella ka kotloloho ho bonoeng bocha kapa e bapala karolo ea ho hlophisa karabelo ea kameho e latelang. Ho feto-fetoha le maemo hona ho bakoa ke ho its'epa meralo ea liteko moo ho qhekelloang ho qhekellang le ts'ebetso ea dopaminergic kamora nako e shebiloeng. Mona re amohela mokhoa o mong: re sebelisa ts'ebetso ea dopamine re sebelisa apomorphine (D1 / D2 agonist) mme re lekanya phetoho ea lits'ebetso tsa methapo ea ts'ebetso ea bohlanya. Likarolong tse fapaneng tsa lithethefatsi le tsa placebo, barupeluoa ba ile ba phethela mosebetsi oa von restorff. Apomorphine e ile ea potlakisa le ho ts'oants'a N2 e nchafalitsoeng, karolo e amanang le Ketsahalo e amanang le Ketsahalo e nahanang ho supa likarolo tsa pele tsa ho sibolloa ha bocha, mme e entse hore mantsoe a puo ea lipale a hopoloe hantle. Apomorphine e boetse e fokotse bophahamo ba ntho e ncha-P3a. Keketseho ea ts'ebetso ea li-receptor tsa D1 / D2 ka hona e bonahala e le matla a kutlo a neural ho susumetso ea lipale, e etsang hore litaba tsena li be bonolo.

Selelekela

Bokhoni ba ho arabela ka nepo le ka potlako ho thuto ea nalane e its'oarella ho ts'ebetso ea methapo ea methapo e bonts'ang pono, tlhokomelo, ho ithuta le ho hopola [1]. Leha litaba tsa boithuto li fumane thuto e ngata, empa ha ho na bonnete ba hore na ho sibolloa lintho tse ncha ho etsahala joang, ke likarolo life tse amehang, le hore na litsamaiso tsa methapo li kenella joang.

Matšoao a amanang le ketsahalo a amanang le ketsahalo (ERP) a loketse hantle ho utloisisa mekhoa ea tšebetso ea methapo. Khopolo-taba ea nalane hangata e hlahisa likarolo tse peli tsa ERP ka tatellano: pale ea morao-rao N2 (N2b ho Pritchard le basebetsi mmoho [2] karohano ea N2), le P3, e amanang le kabo ea tlhokomelo ho khothaletso ea nalane. [3], [4]. N2 ka kakaretso e bonahala e bonts'a ts'ebetso e kenyelletsitsoeng ho iphumanele le ho amohela mohopolo oa rialo [5], [6], mme motsoako o fokotsehile haholo kamora ho pheta-pheta bo le bong ba khopolo ea buka [7]. E qapiloe ka likarolo tse tharo: N2a, N2b le N2c [2]. Tsena li tsamaellana le mismatch negativity (N2a), anterior N2 kapa N2 e sa tloaelehang (N2b) le posterior N2 (N2c; [8]). N2a / mismatch negativity e na le phepelo e kholo-bohareng ea fronto mme ho nahanoa hore e fana ka karabelo e ikatisang ea neural ho mofani oa tlhaiso ea mali [9], [10], athe N2b hangata e etella karolo ea P3a mme e atisoa haholo ke mosebetsi oa pono o makatsang [11], [12]. Karolo ena ea morao e nkuoa e le semiautomatic, ka hore e khothaletsoa ke mohopolo o makatsang ntle le hore na mosebetsi o bohlokoa hakae [5], [6]. N2c, e atisang ho hlaha karolo ea P3b, e amana le mesebetsi ea sehlopha [13].

Karolo ea P3 e boetse e arotsoe ka mekhahlelo e 'meli: Fronto-central P3a (kapa P3 e ncha) le Centro-parietal P3b. P3a e amahantsoe le tlhahlobo ea maikutlo a lipale bakeng sa ts'ebetso e latelang ea boits'oaro mme e phatlalalitsoe hore e be letšoao la mochine o tsebahalang oa ho fetola maikutlo [14] mme mohlomong le index ea distractibility [15]. P3b e teng leha e le ho lits'ebetso tsa index tse amanang le ho amohela moelelo le bohlokoa [4], [7]. Tumellanong le sena, P3b e ntlafatsoa bakeng sa ts'usumetso e amanang le liqeto kapa likarabo tsa moraorao [16].

Lithuto tse 'maloa tsa thuto ea meriana li sebelisitse N2 le P3 ho hlahloba motheo oa molek'hule oa ho sibolloa ha lintho tse ngata, haholoholo ka lithethefatsi tse amang mefuta e mengata ea li-neurotransmitters. Soltani le Knight [17], tlhahlobisong e felletseng ea lingoliloeng, fana ka maikutlo a hore boemo ba bophahamo ba p3 e makatsang bo itšetlehile ka ts'ebetso ea li-monoamine tse 'maloa, haholo-holo dopamine le norepinephrine. E lumellana le sena, Gabbay le basebetsi mmoho [18] o fumane hore d-amphetamine, dopamine e sa khethang le agoreist ea norepinephrine, alter P3a, N100 le reorienting negativity (RON) reaction hape ho susumetsa pale e ncha. Barupeluoa ba ikhethileng bakeng sa d-amphetamine ba hlahisitsoe P3a amplitude e kholo, ba fokotsehile N100 le ho fokotsa amplitude RON kamora d-Amphetamine, ha ba bapisoa le bankakarolo ba sa rateng lithethefatsi.

Ho kenelletse lipilisi tse khethehileng tse amanang le meriana li sebelisitsoe ho etsa lipatlisiso le liphoofolo kapa lithutong tseo ho tsona bakuli ba hlahlojoang maemong a meriana le ha ba se ba sa sebetse. Ho schizophrenia, e amanang le dysfunctions tsamaisong ea dopamine, mismatch negativity (MMN) ea fokotseha ha bakuli ba fumana kalafo ea neuroleptic e thibelang dopaminergic pathways [19]. Phuputsong e nang le bakuli ba lefu la Parkinson's (PD) batsamaisi ba L-Dopa kapa dopaminergic agonists ha ba a fetola maikutlo a makatsang, joalo ka ha ho lekotsoe ke mosebetsi oa linokoane tse tharo. Leha ho le joalo, ho fumana sena ho thata ho ho hlalosa ka lebaka la comorbidity ka sampole, e neng e kenyelletsa bakuli ba nang le boits'oaro bo qobellang [20].

Boithuto bo bong bo sebelisitse mokhoa oa ho lumellanya, moo ts'ebetso ea ts'ebetso libakeng tse ling le li-polymorphisms tsa neurotransmitter li amanang le li-index tsa ts'ebetso ea bocha. Ts'ebetso ea Magnetic Resonance Imaging (fMRI) e sebetsang e hlahisa lintho tse sa tloaelehang libakeng tse nang le mesopimbic tse nang le dopamine tse ngata joalo ka sebaka sa substantia nigra. [21]. Polymorphisms ea liphatsa tsa lefutso e amanang le ho fumaneha ha dopamine (COMT) le letsoalo la li-receptor tsa D2 (ANKK1) li fumanoe li lekola ts'ebetso ea bocha, hore boemo bo phahameng ba P3a bo amana le sekala sa mefuta ena e 'meli. [22]. Ho enjeloa ha mofuta oa genus bakeng sa ba tsamaisang dopaminergic (DAT1) ho boetse ho boletsoe ho fumanoeng ha boiphihlelo ba mesebetsi [23]. Lithuto tsena li fana ka maikutlo a hore ho fumaneha ha dopaminergic ho matlafatsa sepheo sa ho fumana ts'ebetso le ts'ebetso e tsoelang pele ea susumetso ea nalane. Ho feta moo, amplitude ea P3a e fokotseha ha maemo a dopamine a le tlase, joalo ka ha ho bontšoa ke lithuto le bakuli ba lefu la Parkinson [24], [25].

Leha ho le joalo, tekong ea morao-rao Kenemans le Kähkönen [26] fana ka maikutlo a hore phello ea ho thets'oa ha dopamine ho likarolo tse amanang tse ncha, joalo ka MMN le P3, ha e na matla, le hore phello e kholo ea dopamine e bonahala maemong a ts'ebetsong a amanang le ho shebella likhohlano. Bangoli bana ba boetse ba fana ka maikutlo a hore phello ea dopamine e itšetleha ka li-receptor, le hore agonism ea D1 / D2 receptors e bohlokoa ho potlakiso ea lits'ebetso tsa pono.

Leha bopaki bo tšohliloeng ka holimo bo supa ts'ebetso ea dopamine ts'ebetsong ea bohlanya, mofuta o nepahetseng oa karolo ena o ntse o sa hlaka. Mohlomong dopamine e sebetsa ho theha neural nahanela ho itlhahisa ho noha, ka hona e bapala karolo ea bohlokoa ho bonoeng ha bocha [27]. Ntle le moo, ts'ebetso e ncha e susumetsang libakeng tsa boko ba dopaminergic e ka bonts'a tse latelang karabelong to novel stimuli, e supang karabelo e nang le kelello ea liketsahalo tsa tikoloho tse kanna tsa ba le boitshwaro bo nepahetseng [28].

Thutong ea hona joale re thehile tsamaiso ea dopamine ka tsamaiso ea D1 / D2 agonist apomistphine le litekanyo tsa likarolo tse amanang le linepe tse amanang le ERP. Mokhoa ona o re lumella ho nyenyefatsa karolo ea dopamine ts'ebetsong ea bohlanya [29], [30]. Barupeluoa ba ile ba qeta lithuto tse peli tsa liteko, e 'ngoe e latela tsamaiso ea apomorphine le e' ngoe e latelang ho tsamaisoa ha saline placebo. Bakeng sa ho khetholla ho nka karolo ha D1 / D2 ts'ebetsong ea boqapi re bile le barupeluoa ba tlatsitseng mosebetsi oa von restorff sehlopheng se seng le se seng ha ho ntse ho rekota electroencephalogram. Mosebetsing ona, barupeluoa ba ithuta lenane la mantsoe, ao a mang a 'ona a ikhethang ka lebaka la sebopeho le' mala o ikhethang. Tsena li hopoloa hamolemo hamorao [31] ka lebaka la bocha ba bona [32].

Liphuputso tse ngata tsa ERP tsa ts'ebetso e ncha li tloaetse ho sebelisa 'oddball' paradigms ho fapana le mosebetsi oa von Restorff. Mosebetsing o tloaelehileng oa oddball ho hlahlojoa karabelo ea mmele linthong tse sa tloaelehang tse sa tloaelehang. Mosebetsi ona o hloka hore barupeluoa ba arabele sepheo se ikhethileng se hlahisoang ka tatellano ea litšusumetso tse nang le tšusumetso ea lipale tse sa tloaelehang khafetsa. Re sebelisitse mosebetsi o sa tloaelehang oa von Restorff ka mabaka a mabeli. Taba ea mantlha, e fana ka lethathamo la boits'oaro ba ts'ebetso e ncha, e leng litefiso tsa ho hopola likhakanyo tsa lipale. Taba ea bobeli, liphetoho tse bakiloeng ke mokhoa o sa tloaelehang oa ho hopola ke karolo ea litlamorao tsa bocha mohopolong le ho ithuteng. Joalokaha ho boletsoe kaholimo, thuto ea hajoale e khothalelitsoe ke mohopolo oa hore dopamine e ka ama ho ithuta ka karolo eo e e bapalang molemong oa ho sibolla lintho tse ncha, 'me thahasello ea rona ea mantlha ke hore na bonohe bo ka ama thuto le mohopolo joang. Kahoo re khethile ho sebelisa mosebetsi o lumellang pono ea hore na bocha bo ama litšebetso tsena tse latelang tsa kutloisiso (bona hape [33], [34].).

Haeba dopamine D1 / D2 ts'ebetso ea receptor e eketsa kutloisiso ea boko hore e be ntho e ncha, tebello ea rona e ne e le hore ho ts'oaroa ha li-receptor tsa dopamine tse bakoang ke apomorphine ho thehe nalane e kholo ea N2 ho mantsoe a fonte a makatsang. Haeba dopamine e kentsoe mosebetsing oa morao-rao oa ho lemoha lintho ka ho hlaka, hona ho lokela ho bonahatsoa ka likarolo tsa kamoso tse joalo ka P3a, empa N2 ha ea lokela ho ameha.

Results

Ditaba tsa Boits'oaro

Setšoantšo sa 1 e hlahisa e hopola ho nepahala e le ts'ebetso ea boqapi ba bo-fonte (noino / standard) le boemo ba lithethefatsi (apomorphine / placebo). Ho bolela ho nepahala ho pholletsa le maemo a lithethefatsi bakeng sa mantsoe a macha e ne e le 30.2% le bakeng sa mantsoe a tloaelehileng 27.3%. Ts'ebetso ea lipalopalo e nkile sebopeho sa tlhahlobo ea khafetsa ea phapang (RM ANOVA) e nang le lintlha tsa bocha le boemo ba lithethefatsi. Sena ha sea senola phello e kholo ea boemo ba lithethefatsi (F1,25 = 2.27, p = 0.143), ha ho na phello ea mantlha ea bocha (F1,25 = 2.02, P = 0.174), empa, ka mokhoa o hlakileng, tšebelisano lipakeng tsa mabaka (F1,25  = 4.32, p = 0.048). Phapang ea tatellano e bontšitse hore ts'ebetso ea mantsoe a sengoloa a mongolo e ne e le betere ho feta ea mantsoe a tloahelehileng a maemong a apomorphine (t25 = 2.61, p = 0.015), empa ho ne ho se phapang ea ho hopola pakeng tsa fonte ea lipale le mantsoe a tloaelehileng maemong a placebo (t25 = 0.12, P = 0.913). Hlokomela hore litekanyetso tsa lipalo-palo bakeng sa liphapano tsena tse reriloeng li bonts'a litekanyetso tse tala, tse sa nepahalang.

Setšoantšo sa 1 

Lintlha tsa boitšoaro. Ho nepahala (%) ho hlahisoa ka har'a y-axis, 'me li-bar li reretsoe merero ea lipale tse ncha le tse tloaelehileng, ka bobeli tlasa apomorphine le placebo.

Lintlha tsa ERP

Ha mantsoe a tloaelehileng a fonte a sa ka a hlahisa N2 e hlakileng (bona sebaka se nepahetseng sa Setšoantšo sa 2) re bonts'itse karolo ea N2 e thehiloeng karabong ea maikutlo a bonoa ba buka (sheba leqephe la Setšoantšo sa 2). E lumellana le lingoliloeng tse seng li ntse li le teng [6], N2 e ne e sebetsa hantle ka bongata libakeng tsa li-elektrone tse bohareng tse batlang li lekana le Fz le FCz kopanong ea motlakase ea 10-10. Merero e hlahisitsoeng Setšoantšo sa 2 bonts'a menyetla e tlalehiloeng ho li-electrode tsa midline tse batlang li lekana le electrodes Fz le Cz ea Sisteme ea li-electrodes tsa 10-10.

Setšoantšo sa 2 

ERPs e khothalelitsoe ke novel le susumetso e tloaelehileng kamora tsamaiso ea apomorphine le placebo, ho li-electrodes Fz le Cz.

Joalo ka ha ho bonts'itsoe karolong e ka holimo-leqeleng ea Setšoantšo sa 2, N2 e hlokometsoeng maemong a apomorphine e ne e le pejana ebile e le kholo ha e khothaletsoa ke mantsoe a puo ea khale. N2 e koaheloa ke karolo e lumellanang ea nako e tšoanang, P2, eo ka boeona e phahameng ka ho fetisisang 180 ms. Leha ho le joalo, phetiso ea topographical le phapang e lemohileng pakeng tsa lithethefatsi le maemo a placebo li supa phetoho e itseng ea N2.

Re ile ra qala tlhahlobo ea lipalo ka ho leka ho ts'epahala ha N2 latency change. Sena se fihletsoe ka ts'ebeliso ea jackknifed bootstrap process moo N2 ho qala ho latency e hlalositsoeng e le nako ea ha karolo ena e fihla 50% ea bophahamo ba eona bo phahameng (bona [35].) Tlhahlobo ena e bonts'itse hore qaleho ea N2 e pejana maemong a apomorphine (166 ms) ho feta maemong a placebo (176 ms; t25 = 2.19, p = 0.041).

Ka lebaka la mokhoa ona tlhahlobo ea rona ea "amplitude ea N2" e thehiloe ho linako tse fapaneng tsa latency bakeng sa maemo a apomorphine le a placebo. Sebakeng se seng le se seng, re lekantse bolelele ba bophahamo bo bonoang ka nqane ho nako ea 20 ms e shebaneng le tlhoro ea N2 [36]. Ka hona, N2 bakeng sa boemo ba apomorphine e hlalositsoe e le moelelo oa ho eketseha lipakeng tsa 156 le 176 ms, le boemo ba placebo pakeng tsa 166 le 186 ms. Liphetho li bonts'itse N2 e kholo e ts'epahaletseng karabelo ea tšusumetso ea lipale tse fumanehang ka har'a apomorphine ho fapana le boemo ba placebo (t25 = 2.88, p = 0.008). Bona Lethathamo 1.

Lethathamo 1 

Tlhaloso ea teko ea taolo, e etselitsoeng ho leka sephetho sa boholo ba polelo ea likarolo tsa ERP tse hlahisitsoeng tokomaneng ena.

Ha re bone ho se tšoane ho bakoang ke lithethefatsi ho ammeng ea P3a (∼250-350 ms. Post-activus). Ho fapana le hoo, P3b e khothalelitsoe ke mantsoe a puo e ngotsoeng e nyane maemong a apomorphine (karolo e kaholimo ho le letšehali ea Setšoantšo sa 2). Peak P3b amplitude e ile ea bonoa libakeng tsa elektroniki tsa morao-rao, 'me tlhahlobo ea lipalo e ne e ipapisitse le bokhoni bo bonts'itsoeng bo tsoang ho 350-450 ms post -umu ea posta ka har'a elektrone e maemong a tsamaellanang le label ea Cz ho mNageso ea 10-10. Tlhahlobo ena e senotse ho fokotseha ho ts'epahalang hoa bophahamo ba P3b bo khothalelitsoeng ke mantsoe a font a seng a le teng maemong a apomorphine ha a bapisoa le boemo ba placebo (t25 = 2.37, p = 0.026).

Puisano

Re fuputse karolo ea tšebetso ea dopamine D1 / D2 receptor ts'ebetsong ea susumetso ea lipale. Kamora ho tsamaisoa ha aproistine ea D1 / D2 agonist re ile ra ba le karolo ho etsa mosebetsi oa ho hopola ho kenyelletsa tlhahiso ea tšusumetso ea lentsoe-font. EEG e tlalehiloe ha barupeluoa ba phethela mosebetsi, 'me ra arola likarolo tsa NPNUMX tsa boqapi le tsa P2a ERP.

Ho fanoe ka hore N2 ea anterior e amana le ho sibolloa ha palesa e ncha [5], [6], mme ho nahanoa hore o supa ts'ebetso ea marang-rang a ho lemoha lintho tse ncha a fumanehang ka kotloloho ka pele [37], [38], e ka sebelisoa e le index ea ho sibolla lintho tse ncha ho latela maemo a kenelletseng a k'hemik'hale a amang tsamaiso ea dopamine. Mosebetsi o teng o bonts'a hore dopamine e kentse letsoho ho sibolleng lintho tse ncha [23], mme haholoholo ka lebelo la lits'ebetso tsa pono [26]. Haeba ts'ebetso ea li-receptor ea D1 / D2 e bapala karolo ea bohlokoa ho sibolleng lintho tse ncha, tebello ea rona e ne e le hore apomorphine e lokela ho ba le tšusumetso e kholo ho N2 ea anter. Ho lumellana le sena, motsoako ona o ne o le moholo ka mokhoa o tšepahalang hape o le pejana maemong a apomorphine.

Habohlokoa, tšusumetso ea apomorphine ho anterior N2 e khethiloeng thutong ea rona e fapana le litlamorao tsa apomorphine e hlokometsoeng mosebetsing oa pejana. Mohlala, ho Ruzicka et al. [29] Tsamaiso ea apomorphine ho bakuli ba Parkinson e bakile hore N2 le P3 li hlahisoe ke sepheo sa sepheo sa ho utloa li be nyane mme hamorao ho feta tse hlahisitsoeng maemong a seng a lithethefatsi. Ruzicka et al. e phethetse ka hore apomorphine e liehisa lits'ebetso tse hlahisang khethollo le karohano (bona hape [29], [39], [40]), joalo ka ha ho bonoa kamora ho tsamaisoa ha levodopa ho bakuli ba Parkinson (mohlala, [41]]. Moelelong ona ho potlaka le kholiso ea N2 e hlahang liphethong tsa rona ea hlolla: apomorphine e bonahala e na le phello ka kotloloho ho N2 e hlohlellelitsoeng e ncha e khahlano le ho lieha ho akaretsang ho bonoeng ho likarolo tsa N2 le P3 lithutong tsa pejana.

Tumellanong le mosebetsi ona oa pejana o bonts'ang phello e mpe ea apomorphine, re fumane phokotso e pharalletseng ea molumo oa P3 - haholoholo ho P3b - ha bankakarolo ba le tlasa ts'usumetso ea sethethefatsi (bona Setšoantšo sa 2). Liphetho tsena ha li lumellane le bopaki bo fetileng ba liphatsa tsa lefutso, bo amanang le ts'ebetso ea dopaminergic le boemo bo phahameng ba P3a [42]. Ka sefahleho sa eona, sena se ka supa tšusumetso e mpe ea lithethefatsi ho litsamaiso tse mamelisisitsoeng le li-mnemonic tse pakiloeng ke P3. Leha ho le joalo, e lumellana le liphetho tse ling ka har'a lingoliloeng [40], liphetho tsa rona ha li bontše kamano lipakeng tsa phapang ea catecholomine-ikiwa ea P3 le ts'ebetso ea boitšoaro. Ha e le hantle, Apomorphine e ne e na le ts'episo E molemo tšusumetso mohopolong oa mantsoe a bonyane mantsoe a fonte.

Moetso ona o re fa maikutlo a hore phapano ea ho hopola mantsoe a mongolo oa mongolo - the von Restoff effect - e bonahala ho anterior N2, eseng P3, mme ka hona e bonts'a phetoho ho kutlo ea methapo ea kutlo ho mokhoa o mocha ho fapana le lits'ebetso tse latelang tsa kutloisiso. Sena se tsamaellana le sehlopha sa lintho tse fumanoeng ho tsoa labong ea rona se bonts'ang ho arohana lipakeng tsa molumo oa P3 le monyetla oa hore lentsoe la fonte le tla hopoloa [43]. Ho ba sieo ha phello efe kapa efe ea lithethefatsi ho P3a ho ka bonts'a tšusumetso e kopaneng ea litšusumetso tse peli tsa lithethefatsi tse tšoanang: ka lehlakoreng le leng apomorphine e ka nka khato ea ho eketsa P3a amplitude ka ho matlafatsa kutloelo-pele ho bocha (joalo ka ha ho fanoa ka sephetho sa N2), ho sephetho sa N3 apomorphine e 'ngoe ea letsoho e ka nka khato ea ho fokotsa ho eketseha ha PXNUMXa ka ts'usumetso e mpe e mpe ho amplitude ea likarolo tsa ERP.

Joalokaha ho boletsoe kaholimo, mosebetsi o ntseng o le teng o bontša hore apomorphine e na le tšusumetso e mpe khahlolong ea kelello, empa liphetho tsa rona li bontša ka ho hlaka hore e thusa mekhoa ea ho sibolla lintho tse ncha tse boletsoeng ke anterior N2. Sena se tsamaisana le maikutlo a Redgrave le Gurney [27], ba phehang khang hore romana, tšusumetso e sa lebelloang e baka ho tsoa ka potlako, ka boiketsetso ha dopamine. Karolo ea tokollo ena e tla ba ho matlafatsa likarolo tse ling tsa bokooa hore ho be le tlhophiso ea nalane ea tikoloho, le ho thusa ho ithuta ka lintho tsena le likarabo tse ka bang li bakile ponahalo ea tsona. Tsebo ka tsela ena e ba senotlolo sa polasetiki ea boits'oaro - ho beha sethala, ka dopamine, bakeng sa ho ithuta.

Joalokaha ho bonahala ho Setšoantšo sa 2, karolo ea N2 e hlokometsoeng thutong ena e feta le karolo ea P2 ea ERP, 'me liphetho tsa rona li ka bonts'a motsoako oa litlamorao ho likarolo tsena tse peli. Ka bobeli N2 le P2 li etsahala ka nako e ts'oanang ea latency mme ho thata ho li khetholla (ntle le polarity) kaha li shebile haholo manong a liteko tse tšoanang mme li na le topography e tšoanang. Li bonahala li bonts'a tšebetso ho lijenereithara tse haufi le 'mele, haeba li se joalo ka sebopeho se le seng sa boko (joalo ka ha ho ka khoneha haeba phapang ea polarity e ne e le ka lebaka la ho phutha-phutha).

Leha ho le joalo, ho na le monyetla o moholo oa hore li -P2 tse fapaneng li ka ikarabella bakeng sa liphetho tsa rona. Taba ea mantlha, ho phahamisoa hoa P2 ho khothaletsoa ke fonte e tloaelehileng ha ho a ka ha susumetsoa ke apomorphine, ho latela sephetho se seng se bonts'a hore P2 e kotsing ea ts'ebetso ho fapana le ho ba ntho e ncha. [44]. Taba ea bobeli, ha ho na monyetla oa hore phallo ea N2 latency e fetotsoeng e ka etsoa ka phetoho ho P2. N2 ke karolo ea maqhubu a phahameng ho database ena, athe P2 e maqhubu a tlase (mme e tla ka kakaretso le P3a). Ho feto-fetoha ha motsoako ona oa "polarity" o tlase o tlase ha ho na monyetla oa ho etsa phetoho tlhorong e phahameng ea maqhubu a N2.

Re fana ka maikutlo a hore liphetho tsa hona joale li bonts'a phapang ho anterior N2, empa tlhaloso e 'ngoe e ka ba hore tšibollo ea rona ea teko e susumetsa ho se tsotelle ho sa tsotelleng. [45], [46]. Leha ho le joalo, lithuto tsa pejana li bontša hore dopamine ha e na tšusumetso molokong kapa phetong ea 'mele ea MMN [47]. Ntle le moo, li-jenereithara tsa MMN tse bonoang li bonahala li le kamoreng e ka morao ea bokapele, e nang le sebaka se phahameng ho feta sa occipital [48] ho fapana le libakeng tse ka ntle tse hlahang liphetho tsa rona.

Ka hona re fihlela qeto ea hore apomorphine e na le tšusumetso ts'ebetsong ea bohlanya joalokaha e boletsoe ho anterior N2. Apomorphine ka kakaretso e nahanoa hore e na le tšusumetso ea agonistic ho li-receptors tsa D1 / D2, e lumellanang le mohopolo oa hore ts'ebetso e eketsehileng tsamaisong ea dopamine e ka amahanngoa le ho eketseha ha maikutlo bakeng sa ts'usumetso ea lipale. Le ha ho le joalo, likatse tse peli li tlameha ho hokahana le mohopolo ona. Taba ea mantlha, e ntse e sa hlaka hore na apomorphine e tsoang tekong e tlase e sebetsa joaloka agonist kapa hore ke mohanyetsi ea sebetsang ka tšusumetso ea eona ho li-autoreceptors [49], [50]. Tšusumetso ena e ka 'nang ea hlaha e hlalositsoe e le litlhaloso tsa litlamorao tse mpe tsa kelello ho bakuli ba Parkinsonia [51], [52], empa e sa lokela ho bontšoa ka mokhoa o hlakileng. Thutong ea rona, apomorphine e ne e sena tšusumetso mohopolong oa motheo, empa ka mokhoa o ikhethileng oa memori e ntlafalitsoeng bakeng sa tlhahiso e ncha. Khopolo ea hore mohanyetsi oa dopamine a ka baka sebopeho sena ho thata ho lumellana le akhaonte efe kapa efe ea morao-rao ea theoretical. Ho fapana le hoo, haeba apomorphine e sebelitse e le ts'oaetso, phetoho ena ea boitsoaro e tsamaisana hantle le mohopolo oa hore dopamine e kenelletse ho bonoeng bocha.

Taba ea bobeli, tlhaloso ea rona e thehiloe khopolong ea hore mohopolo oa boits'oaro bo bohareng ke tšusumetso e ncha. Mantsoe a novel fonte le 'ona a ne a fapane le mantsoe a fonte a tloaelehileng mefuteng ea' mala, boholo le mofuta oa fonte, tseo ka mohopolo li ka nkang karolo molatong oa likarabo tse hlahlobiloeng mona. Leha ho le joalo, ha ho na monyetla oa hore likarolo tsena tsa 'mele li ka hlahisa likarabo tse kang N2 le P3a, mme sena se ne se laoloa bakeng sa boholo ba teko ea taolo. Ho feta moo, phapang ea mofuta ona oa tšusumetso ha e bonts'ane le liphetoho mesebetsing ea "dopamine-rich" midbrain nuclei [53].

Qetellong, sephetho sa rona se bonts'a hore tsamaiso ea D1 / D2 agonist apomistphine e lebisitse ho bonts'a ntlafatso ea maikutlo ka pale ea palesa, fonte, le boholo, joalo ka ha li bonts'a ho qaleha le ho eketseha ha boemo ba karolo ea anterior N2 ea ERP. Ho tsebo ea rona, ena ke thuto ea pele ho bonts'a ts'ebetso ea li-receptors tsa D1 / D2 ka mokhoa o ikhethileng e eketsa maikutlo a boko ho bocha. Karolo ea kutlo ena e eketsehang e ka ba ho tsamaisa ho ithuta ho hlophisoa ha lipale tsa tšusumetso ea lipale le likarabo tse amanang le tsona. Tumellanong le sena, re fumane hore lintho tsa lipale tse ncha li hopoloa hamolemo ka mor'a ts'ebetso ea li-receptor ea D1 / D2.

Ts'ebetso ea Teko

barupeluoa ba

Baithaopi ba mashome a mabeli a metso e ts'eletseng ba phetseng hantle ba nang le pono e tloaelehileng kapa e hlophisitsoeng hantle ho ea pele ba ile ba haptjoa ho tsoa ho palo ea baithuti ba Yunivesithi ea VU Amsterdam. Ha ho le ea mong oa barupeluoa ea tlalehileng leha e le efe ea methapo kapa methapo ea kelello e tsebahalang. Barupeluoa bohle ba ile ba fana ka tumello e ngotsoeng ba bile ba amohela € 150 bakeng sa ho nka karolo ho ithuteng le puseletso bakeng sa litšenyehelo tsa maeto. Sehlopha se neng se nkile karolo se ne se entsoe ka basali ba 17 le ba batona ba 9, ba lilemo tse pakeng tsa 18 ho isa lilemong tsa 32 (ho bolela, 22 yr; sd, 3.9 yr). Ba mashome a mabeli a metso e meraro ba nkileng karolo ba ile ba fuoa letsoho le letona. Boithuto bona bo entsoe ka tumellano le Phatlalatso ea Helsinki mme ea amoheloa ke komiti ea melao ea boitšoaro ea Univesithi ea VU Amsterdam.

Ts'usumetso ea Khemisi

Barupeluoa ba ile ba lekoa hang kamora ho etsoa ka mokhoa o ikhethileng oa apomorphine mme hang ka mor'a placebo, ba foufatsoa habeli. Likarolo tse peli tsa liteko li ile tsa hlophisoa beke e le 'ngoe ho fokotsa litla-morao,' me tatellano ea lithuto e ne e sa lekane ho barupeluoa bohle.

Sebokeng sa apomorphine lithethefatsi li ne li fanoa ke mofuputsi ea netefalitsoeng ka karolelano ea 0.005 mg / kg. Apomorphine e fumanoe ho Brittannia Pharmaceuticals Ltd. (lebitso la khoebo la Apo-Go). Sebokeng sa placebo letsoai le ne le tsamaisoa ka mokhoa o tšoanang le bophahamo. Litekanyetso tsa apomorphine le saline li ile tsa tlisoa ho mofuputsi ka lipontso tsa ente tse sa bonahaleng tse nang le li-code tse bolokiloeng ke k'hemiste.

Metsotso e mashome a mararo pele ho tsamaiso ea barupeluoa ka bobeli ba apomorphine kapa placebo ba amohetse tekanyetso ea molomo ea 40 mg ea domperidone, mohanyetsi oa D2 o khethang tsamaiso ea methapo ea kutlo (le bona e ama). [52]). Domperidone e fumanoe matlapeng a molomo oa 10 mg ho tsoa ho Johnson & Johnson (lebitso la khoebo la Motilium), mme ea fuoa matla a ho loants'a litla-morao tse tsebahalang tsa li-agonists tsa D2, tse kenyelletsang ho nyekeloa le pelo [54]. Leha ho le joalo, barupeluoa ba 11 ba tlalehiloe nausea le somnolence kamora ho tsamaisoa ha apomorphine. Ho tsamaisana le mosebetsi o teng oa ho sebelisa litlhare tsena [52], [55]Litla-morao tsena li bile le nako e khuts'oane, li lula li le sieo metsotso e 15, 'me barupeluoa ba tlaleha ho ba seli le ho itokisetsa mosebetsi kamora nako ena.

Ts'ebetso le Stimuli

Setšoantšo sa 3 e bontša sesupo sa kemiso ea nako ea liteko. Kaha apomorphine e na le 40 ho ea ho nako ea ho tsoha ea 50, ka hona tlhahlobo e qalile metsotso e mashome a mane ka mor'a ente [52], [55]. Re sebelisitse mosebetsi oa ho ithuta o hlophisitsoeng oa restorff ka mantsoe ao mantsoe a hlahisoang ka mokhoa o tloaelehileng le mantsoe a hlahisitsoeng bukeng ea puo ea khale a ithutoang, 'me hamorao a hopoloa. Mantsoe a mantsu a Novel a hopoloa hantle ho feta mantsoe a tloaelehileng a fonte [31]. Seemeli sa mosebetsi se bonts'oa Setšoantšo sa 3. E ne e kenyelletsa mohato oa ho ithuta, karolo ea hopolo e hopoloang, le karolo ea ho lemoha, empa ts'ebetso nakong ea kamohelo ea ho qetela e ne e siling mme ho bile le liphetho tse tsoang kamoreng e hopoloang ka tlase.

Setšoantšo sa 3 

Semeo sa kemiso ea seboka sa liteko le mosebetsi (cutout).

Nakong ea thuto, barupeluoa ba ile ba hlahisoa ka lethathamo la mabitso a konkreite a 80 ka Senyesemane, bolelele ba mantsoe bo fapaneng pakeng tsa litlhaku tsa 5 le 10. Ho ile ha sebelisoa lethathamo tse peli tse arohaneng, e le 'ngoe bakeng sa thuto ka' ngoe ea tlhahlobo, ka tatellano ea lethathamo lena ho loants'a lithuto tsohle. Mantsoe ana e ne e le a ba hiretsoeng ke Van Overschelde le basebetsi mmoho [56], e tlatsana le thuso ea dikishinari.

Mantsoe lenaneng le leng le le leng a hlahisitsoe e le fonte e tloaelehileng (liketsahalo tsa Courier New, 60) kapa font ea lipale (maemo a 20). Mantsoe a Novel font a ne a na le 'mala o fapaneng (o mong oa mebala e leshome e neng e ka etsahala,' mala o mong le o mong o phetoa habeli ka har'a lethathamo)

Lenane le leng le le leng le ile la bontšoa habeli thutong ka ngoe ea tlhahlobo, ho se na liphetoho ka tatellano, fonte, kapa 'mala, mme barupeluoa ba ile ba nka khefu e khuts'oanyane kamora tlhahiso. Mantsoe ana a ile a hlahisoa bohareng ba skrineng ea bohlooho (boholo 21 ″) a 80 cm ka pele ho taba, joalo ka hore mantsoe a tloaelehileng (boholo ba fonte 17) a theola 2.5 ho 5 degrees angle angle, ho latela bolelele ba lentsoe, le novel mantsoe (boholo ba fonte 30) 5.7 ho 9.6 degrees of angle visual.

Teko e 'ngoe le e' ngoe e qalile ka ho hlahisa sefapano sa fixation bakeng sa karohano e sa reroang ea 400 ho 500 ms (karolelano ea junifomo). Lentsoe le ile la hlahisoa ka morao ho skrineng 'me la lula le bonahala bakeng sa 3500 ms.

Karolong ea thuto, barupeluoa ba ile ba laeloa ho ithuta mantsoe. Karolong e hopotsoeng e hopotsoeng, barupeluoa ba ile ba fuoa lintlha tsa 40 tsa mantsoe a ithutileng (mantsoe a noano ea 20 le 20 ea mantsoe a tloaelehileng - ha se mantsoe ohle a neng a reretsoe ho fokotsa nako ea mosebetsi). Likhalase li ne li e-na le litlhaku tse peli tsa pele tsa lentsoe ka leng, li hlahisa e le 'ngoe ka tatellano,' me barupeluoa ba ile ba phethela mantsoe a ithutileng ka ho thaepa litlhaku tse setseng. E 'ngoe le e' ngoe ea mantsoe a ithutileng eona e ne e na le motsoako o ikhethang oa litlhaku tse peli tsa pele.

Ntle le tšusumetso ea lentsoe le bonoang, nakong ea mohato oa ho ithuta ho ile ha hlahisoa tlhahiso-leseling ka mora ho qalella ho bonoa ha lentsoe ka leng kamora nako ea karohano. Nako e arohaneng pakeng tsa ho qala ho bonoa le ho hlahlobeloa e ile ea khethoa ka mokhoa o sa khetholloang ho tloha tsamaisong e le 'ngoe ea 817 ho 1797 ms. Molumo e ne e le ea mefuta e 'meli; ekaba molumo o tloaelehileng oa 'beep' (2.2 KHz, 300 ms), o hlahisitsoeng ho 58 ntle le liteko tsa 80, kapa molumo o ikhethang oa molumo (300 ms), e hlahisitsoeng ho 22 ntle le liteko tsa 80. Ho ne ho se na kamano lipakeng tsa maikutlo a susumetsang le mantsoe a bonoang, 'me barupeluoa ba ne ba laetsoe ho hlokomoloha melumo. Morero oa tlhaiso-leseling o kenyellelitsoe sebopeho sa liteko ho hlahisa tekanyetso e ikemetseng ea ts'ebetso ea bocha, empa, ka ho lumellana le sephetho se seng sa morao ho tsoa ho lab ea rona, ho ne ho se na bopaki ho data ea ts'ebetso e khethollang ea lithane tse tloaelehileng le likarolo tsa molumo o ikhethang 'me mokhoa ona oa thetso ke ona ha e sa buisanoe ka ho eketsehileng.

Rekoto ea EEG le Tlhahlobo ea Tlhahlobo

EEG e tlalehiloe ho tsoa libakeng tsa scalp tsa 128 e sebelisa sistimi ea BioSemi Active2 (BioSemi, Amsterdam, Netherlands). Li-electrod li behiloe ho latela radial ABC BioSemi montage. Vertical electro-oculogram (EOG) e ne e rekotoa ho tloha ho li-electrode tsa 2 tse behiloeng 1 cm. ka morao ho canthi e ka ntle ea leihlo ka leng, EOG e otlolohileng e ne e rekotoe ho tsoa ho li-elektrone tsa 2 tse behiloeng kaholimo le ka tlase ho leihlo le letona, 'me ho ne ho rekototsoa lipontšo tsa li-electrode tse tsoang ho li-electrodes tse behiloeng ka lehlakoreng le letona le ka ho le letšehali. Sekhahla sa sampling e ne e le 512 Hz. Biosemi ke serethe se tsamaeang ka letsohong le letona, ho fapana le moetlo o fapaneng oa setso oa EEG, ka hona ha e sebelise li-electrodes tsa fatše.

Ts'ebetso e entsoe le EEGlab [57] le lingoloa tse ngotsoeng ka tloaelo tsa Matlab. Lintlha tsa EEG li ile tsa khutlisetsoa bohareng ba letšoao ho tsoa ho li-electrode tse peli tse mastoid, tsa khutlisetsoa ho 500 Hz, e ts'ilafalitsoeng ka li-digitally (0.05-40 hz; Finite impulse kernel e senang sekhahla sa 6 db phetoho ea 0.01 hz. le phetoho ea 6 db ea 2 hz. bakeng sa filimi e phahameng), hape e thehiloe holima nako ea nakoana ea ts'usumetso ea 100.

Ts'ebetso ea likarolo tse ikemetseng e ne e thathamisitsoe ho tsoa data e epoched e oeleng maemong ohle [58], [59]. Likarolo tsa akhaonto ea lisebelisoa tsa maiketsetso li ile tsa bonoa tsa ba tsa tlosoa data, 'me liteko tse bonts'a maqheka a maholo a mesifa le tsona li ile tsa bontsuoa tsa ba tsa hanoa ho tsoa tlhahlobisong e' ngoe (mokhoa oa ho hana o behiloe 100 / −100 µV). Sena se hlahisitse ho hanoa ha 5% ea data ka 'ngoe,' me tlhahlobo e latelang e ipapisitse le li-averages tsa a.) Liteko tsa novel tsa 37 maemong a lithethefatsi, b.) Liteko tsa noano tsa 38 maemong a placebo, c.) Liteko tse tloaelehileng tsa 112 maemong a lithethefatsi, le d.) Liteko tse tloaelehileng tsa 116 maemong a placebo.

Tlhaloso ea lithuso

MM e tšehelitsoe ka lichelete ke thuso ea VIDI 452-09-007 e tsoang ho NWO. CH e tšehelitsoe ka lichelete ke thuso ea Veni 016-125-283 e tsoang ho NWO. Bafani ba lichelete ba ne ba sena karolo morerong oa ho ithuta, ho bokella data le ho hlahlobisisa, qeto ea ho phatlalatsa, kapa ho hlophisa sengoloa.

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