趙敏銳,王典茹,楊解人,王毅群
(1. 皖南醫(yī)學院藥理學教研室,安徽 蕪湖 241000、2. 復旦大學基礎醫(yī)學院藥理學系,上?!?00032)
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臂旁核神經(jīng)元調(diào)節(jié)睡眠覺醒的研究進展
趙敏銳1,王典茹2,楊解人1,王毅群2
(1. 皖南醫(yī)學院藥理學教研室,安徽 蕪湖241000、2. 復旦大學基礎醫(yī)學院藥理學系,上海200032)
摘要:臂旁核(parabrachial nucleus, PB)是環(huán)繞在腦橋結(jié)合臂周圍的灰質(zhì)結(jié)構(gòu),主要由谷氨酸、γ-氨基丁酸(γ-aminobutyric acid, GABA)和腦啡肽神經(jīng)元組成。PB與下丘腦、基底前腦等覺醒核團有著廣泛的神經(jīng)纖維聯(lián)系,特異性損毀PB可引起動物昏迷樣癥狀。同時,PB向非快動眼(non-rapid eye movement,NREM)睡眠核團腹內(nèi)側(cè)視前區(qū)投射,并接受來自面旁核的投射,激活面旁核中的GABA能神經(jīng)元可促進NREM睡眠,表明PB可能參與NREM睡眠的調(diào)控。此外,快動眼(rapid eye movement,REM)睡眠剝奪會引起臂旁外側(cè)核的興奮。綜上所述,PB在機體調(diào)節(jié)覺醒、NREM和REM睡眠中發(fā)揮著重要作用。該文將就PB在睡眠-覺醒調(diào)節(jié)作用中的研究進展做一綜述。
關鍵詞:臂旁核;覺醒;非快動眼睡眠;快動眼睡眠;谷氨酸神經(jīng)元;投射
人生的三分之一在睡眠中度過,睡眠相分為快動眼(rapid eye movement, REM)睡眠和非快動眼(non-rapid eye movement, NREM)睡眠,所有的哺乳動物、鳥類和爬行動物都需要睡眠。睡眠不僅僅是正常的生理行為,更是保障精力充沛的先決條件。當今社會,隨著經(jīng)濟發(fā)展和競爭壓力的增大,睡眠障礙問題愈發(fā)嚴重,臨床缺乏有效治療手段,原因在于睡眠覺醒機制未明。已探知的覺醒核團包括中腦中縫背核(dorsal raphe nucleus,DRN)[1]、腦橋藍斑核(locus coeruleus,LC)[2]、下丘腦結(jié)節(jié)乳頭核(tuberomammillary nucleus,TMN)[3-4]、外側(cè)下丘腦( lateral hypothalamus,LH)[5]等,而睡眠核團包括腹外側(cè)視前區(qū)(ventrolateral preoptic,VLPO)[6]和面神經(jīng)旁核(parafacial zone,PZ)[7]等,睡眠與覺醒核團既相互對立又緊密聯(lián)系,共同調(diào)控睡眠覺醒。
臂旁核(parabrachial nucleus, PB)最早發(fā)現(xiàn)于1914年,位于腦橋背側(cè)部,小腦腳(腦橋結(jié)合臂)周圍,后被Taber首次命名為“結(jié)合臂旁核”,與下丘腦、丘腦、基底前腦、大腦皮層、腹內(nèi)側(cè)視前區(qū)和面神經(jīng)旁核等核團有著廣泛的神經(jīng)纖維聯(lián)系。1984年,Saper等將PB劃分為臂旁外側(cè)核(the lateral parabrachial nucleus, LPB)、臂旁內(nèi)側(cè)核(the medial parabrachial nucleus, MPB)和KF核 (Kolliker-Fuse nucleus)3個亞核團。其中LPB又可分為7個亞核,即上外側(cè)核(superior lateral nucleus, LPBs)、內(nèi)外側(cè)核(internal lateral nucleus, LPBi)、中央外側(cè)核(central lateral nucleus, LPBc)、背外側(cè)核(dorsal lateral nuleus, LPBd)、腹外側(cè)核(ventral lateral nucleus, LPBv)、極外側(cè)核(extreme lateral nucleus,LPBel)和外外側(cè)核(external lateral nucleus,LPBexl)。MPB分為兩個亞核,即內(nèi)側(cè)臂旁核(medial parabrachilal nucleus,MPB)和外內(nèi)側(cè)亞核(external medial subnucleus,MPBe)[8]。PB作為腦橋部重要的中樞信號傳遞核團,參與調(diào)節(jié)機體多項生理功能:傳導至PB的γ-氨基丁酸(γ-aminobutyric acid,GABA)能投射促進動物攝食,而傳導至PB的谷氨酸能投射則抑制動物攝食[9],這表明PB可能調(diào)節(jié)晝夜規(guī)律進食;PB向視前區(qū)的投射可能控制溫度感受,因為后者抑制背內(nèi)側(cè)下丘腦中與產(chǎn)熱相關神經(jīng)元[10];PB還可能參與了痛覺傳導和調(diào)節(jié),脊髓接受來自外周的疼痛感受纖維傳入,并通過PB傳出至疼痛相關的導水管灰質(zhì)(periaqueopctal gray,PAG)、下丘腦和杏仁核等[11-12],因此,我們推斷PB可能是脊髓向其他疼痛相關核團傳導的中轉(zhuǎn)站;PB參與了呼吸調(diào)節(jié),其LPBexl和LPBc亞核中的谷氨酸能神經(jīng)元可促使睡眠呼吸暫停動物覺醒,Kaur等的實驗表明,PB中谷氨酸能神經(jīng)元與機體對CO2感受有關,而PB中谷氨酸能神經(jīng)元與BF、LH、丘腦和皮層等覺醒核團纖維聯(lián)系緊密[13-14],由此推斷,PB中谷氨酸能神經(jīng)可能同時調(diào)控了睡眠覺醒與呼吸。總結(jié)可知,以上這些生理功能多具有睡眠覺醒的節(jié)律性,進而提示我們:PB可能參與調(diào)控睡眠覺醒。特異性損毀PB引起動物昏迷,證明了以上結(jié)論[15]。因此,本文主要論述PB與睡眠覺醒作用之間的聯(lián)系。
1PB與覺醒系統(tǒng)
覺醒是大腦中覺醒系統(tǒng)介導的皮層興奮,是生物正?;顒拥幕A,這種興奮依賴于上行網(wǎng)狀興奮系統(tǒng)的活動維持[16]。1949年,Moruzzi將貓中腦和腦橋的網(wǎng)狀部毀損,貓持續(xù)昏迷,提示我們:中腦和腦橋網(wǎng)狀部中的核團與覺醒啟動密切相關。2011年,F(xiàn)uller等[15]雙側(cè)毀損PB,發(fā)現(xiàn)動物陷入昏迷,表明PB可能是覺醒系統(tǒng)的關鍵核團。此后,PB與覺醒的關系受到睡眠研究者們的重視。而PB中谷氨酸能神經(jīng)元作為其最主要的興奮性神經(jīng)遞質(zhì)[17],與基底前腦(basal forebrain, BF)、LH、丘腦、DRN及大腦皮層等聯(lián)系都十分緊密。
BF與皮層之間的神經(jīng)纖維投射十分密集,是大腦維持覺醒的重要核團[7,18]。離體膜片鉗實驗表明:激活PB中谷氨酸能神經(jīng)元的軸突末梢,可在基底前腦神經(jīng)元上檢測到谷氨酸能電流,并且這些神經(jīng)元投向皮層,證明興奮PB向BF投射的谷氨酸能神經(jīng)元可以興奮BF向皮層投射的谷氨酸能神經(jīng)元[7,19-20];在體實驗表明:損毀BF可導致皮層興奮性降低,動物反應遲鈍;而損毀PB會使動物昏迷,皮層興奮性降低。上述結(jié)果提示:PB向BF的谷氨酸能投射是維持覺醒的重要因素[15]。損毀PB可能切斷了MPB中谷氨酸能神經(jīng)元向BF的投射,導致皮層興奮性降低,難以維持大腦皮層覺醒,使動物陷入昏迷。
現(xiàn)階段研究表明,LPB中的谷氨酸能神經(jīng)元可能是LH中食欲肽(orexin)能神經(jīng)元的重要興奮來源。下丘腦orexin能神經(jīng)元的興奮是維持覺醒的基礎,orexin的合成只存在于LH的神經(jīng)元中[21]。在覺醒期,動物下丘腦orexin分泌量明顯增多[22],orexin能神經(jīng)元的c-Fos蛋白表達增強[5],放電頻率增高;但在REM和NREM睡眠期,放電幾乎停止[23]。神經(jīng)解剖學研究顯示:LPB中谷氨酸能神經(jīng)元的纖維末梢與LH的orexin能神經(jīng)元胞體形成突觸聯(lián)系,這表明LH中的orexin能神經(jīng)元接受來自LPB中的谷氨酸能神經(jīng)元的投射[24]。由以上實驗結(jié)果推測:LPB中的谷氨酸能神經(jīng)元可能通過興奮LH中的orexin能神經(jīng)元,增加orexin,維持皮層興奮。
PB的促覺醒作用可能與上行網(wǎng)狀興奮系統(tǒng)有關。上行網(wǎng)狀興奮系統(tǒng)包括背側(cè)和腹側(cè)兩條通路,這兩條通路都可以將腦干興奮傳遞到皮層。在上行網(wǎng)狀興奮系統(tǒng)的背側(cè)通路中,與覺醒相關的中腦、腦橋和延髓網(wǎng)狀結(jié)構(gòu)的興奮性可以通過丘腦中線核和丘腦髓板內(nèi)核傳遞到丘腦-皮層投射系統(tǒng)[25-28]。PB谷氨酸能神經(jīng)元向丘腦中線核投射[15],因此,我們推斷PB可能通過上行網(wǎng)狀興奮系統(tǒng)的背側(cè)通路作用于皮層,誘發(fā)皮層興奮。
DRN中5-HT能神經(jīng)元可能是PB介導覺醒的另一途徑。成年貓在覺醒期DRN中5-HT濃度明顯增高,5-HT能神經(jīng)元放電頻率升高,在NREM期放電頻率降低[1,29];在大鼠DRN內(nèi)微量注射對氯苯丙氨酸(p-chlorophenylalanine,PCPA)選擇性的抑制5-HT的生物合成后,出現(xiàn)覺醒減少的效應[30],以上實驗證明DRN中5-HT與覺醒相關。逆向追蹤DRN中5-HT能神經(jīng)元接受的投射發(fā)現(xiàn),這些投射來源于MPB和LPB的谷氨酸能神經(jīng)元。由此推斷,興奮PB中的谷氨酸能神經(jīng)元可以興奮DRN中的5-HT能神經(jīng)元,使其發(fā)揮促覺醒作用[31]。
綜上所述,PB中的谷氨酸能神經(jīng)元通過細胞間的神經(jīng)纖維聯(lián)系,將興奮傳導到 BF、LH、丘腦和DRN等,激活這些核團,產(chǎn)生促覺醒作用。此外,PB中的谷氨酸能神經(jīng)元也可直接興奮皮層,誘導覺醒[15]。
2PB和NREM睡眠系統(tǒng)
腹外側(cè)視前區(qū)(ventrolateral preoptic,VLPO)是重要的睡眠促進核團。2008年,Greco等[6]發(fā)現(xiàn),VLPO接受來自LPBc腦啡肽神經(jīng)元的投射,并且在VLPO中灌流阿片受體激動劑,可增加NREM睡眠。由上述實驗推測,VLPO促 NREM睡眠作用可能是由LPBc中的腦啡肽神經(jīng)元介導的。
此外,通過免疫雙標法對貓腦細胞活性研究發(fā)現(xiàn):在NREM睡眠期,LPBc核團中的c-Fos蛋白表達明顯增強,并且c-Fos陽性點能與GABA能神經(jīng)元共標,證明LPBc中GABA能神經(jīng)元在NREM睡眠期被興奮,提示LPBc的GABA能神經(jīng)元很可能發(fā)揮促NREM睡眠作用[32]。
最新研究提示:PB調(diào)控NREM睡眠的機制可能與面神經(jīng)旁核(parafacial zone,PZ)密切相關。NREM睡眠期,PZ的c-Fos蛋白表達明顯增加;毀損PZ會導致動物持續(xù)的覺醒;使用DREADD(designer receptors exclusively activated by a designer drug)技術,特異性激活PZ的GABA能神經(jīng)元,會增加NREM睡眠,提示PZ參與調(diào)節(jié)NREM睡眠[7]。解剖學研究表明,PZ中GABA/甘氨酸能神經(jīng)元向PB密集投射[33];電生理結(jié)果顯示,PZ中GABA能神經(jīng)元抑制PB向BF的興奮性投射[7]。上述結(jié)果提示:PB介導了PZ對NREM睡眠和皮層興奮性的調(diào)控。
以上結(jié)果表明:PB不僅是促覺醒核團,同時還參與了NREM睡眠的調(diào)控。PB調(diào)控睡眠的其中一條通路是作用于促NREM睡眠核團VLPO調(diào)控睡眠。另一條通路是PB接收來自PZ的抑制性投射,間接抑制BF和皮層的興奮性,發(fā)揮促睡眠作用。
3PB和REM睡眠系統(tǒng)
PB不僅參與了覺醒和NREM睡眠調(diào)節(jié),還可能與REM睡眠相關。實驗證明,動物REM睡眠剝奪后,機體會產(chǎn)生代償作用,進而增加REM睡眠[34]。對REM睡眠剝奪動物進行c-Fos染色發(fā)現(xiàn),LPB各亞區(qū)的c-Fos蛋白表達明顯增多,尤其集中在LPBc中,而MPB中c-Fos陽性點沒有明顯增加[35];但損毀MPB會使動物REM睡眠增加[15],由以上實驗說明,PB參與調(diào)控REM睡眠。
此外,PB可能介導了背外側(cè)被蓋核(sublaterodorsal tegmental nucleus,SLD)向BF的投射,這可能是REM睡眠時皮層興奮的主要原因[36]。REM睡眠剝奪時,SLD中80%的谷氨酸能神經(jīng)元興奮,表明SLD的谷氨酸能神經(jīng)元參與REM睡眠的調(diào)節(jié),而MPB接受來自SLD谷氨酸能神經(jīng)元的投射[37],并可通過BF調(diào)控皮層興奮性[7],因此,PB可能介導了SLD對REM睡眠的調(diào)節(jié)作用。
腹外側(cè)導水管灰質(zhì)(ventrolateral periaqueopctal gray,vlPAG)是REM睡眠抑制核團,毀損vlPAG會引起REM睡眠的增加。vlPAG接受來自SLD的抑制性GABA能投射,并通過其GABA能神經(jīng)元抑制下游PB區(qū),這可能是機體控制REM睡眠中的一條通路[15]。
PB介導REM睡眠和覺醒的進程均投射至BF,由此猜想:在覺醒期,PB谷氨酸能投射并興奮BF,進而興奮大腦皮層,產(chǎn)生覺醒效應;在REM睡眠期,REM睡眠促進核團SLD中谷氨酸神經(jīng)和REM睡眠抑制核團vlPAG中GABA能神經(jīng)元通過上述覺醒通路作用于皮層,調(diào)節(jié)REM睡眠,并產(chǎn)生REM睡眠效應。
4小結(jié)
PB是位于腦橋部的中轉(zhuǎn)核團,參與機體多項生理功能的調(diào)節(jié),同時負責錯綜復雜的睡眠覺醒信號的傳遞,調(diào)控覺醒、NREM和REM睡眠,但由于其調(diào)控的生理功能多具有睡眠覺醒節(jié)律性,我們因此推斷:PB中某些神經(jīng)元同時調(diào)控睡眠與覺醒這些生理功能;此外,PB中的谷氨酸能神經(jīng)元是維持覺醒的主要因素,并向下丘腦、中腦、丘腦、基底前腦、大腦皮層等廣泛投射,以上事實表明PB可能參與上行興奮系統(tǒng);PB的部分區(qū)域具有調(diào)節(jié)NREM睡眠的作用,并介導了PZ對NREM睡眠的調(diào)控,這可能是PZ間接抑制PB下游促覺醒核團的結(jié)果;PB參與調(diào)控REM睡眠的機制可能是SLD、vlPAG等REM核團通過PB的覺醒通路對皮層作用。綜上可知,PB調(diào)節(jié)睡眠覺醒網(wǎng)絡極其復雜,因此,本文將PB參與調(diào)控睡眠-覺醒核團的神經(jīng)網(wǎng)絡進行了梳理、總結(jié)和歸納,如Fig 1。
Fig 1 Connection of the PB with sleep-wake regulation systems
PB sends projections to cerebral cortex, wake-related nuclei including BF, LH, Thalamus, DRN, etc., and to NREM-related nuclei including VLPO. Meanwhile, PB also receives afferents from REM-related SLD and vlPAG, NREM-related PZ. The glutamatergic neurons in PB project to cerebral cortex, BF, LH, Thalamus and DRN, while opioid neurons to VLPO. PB also receives GABA afferents from PZ and vlPAG, glutamatergic projections from SLD. The black, blue and red circles represent wake-, NREM- and REM-related nucleis, respectively. The arrow represents afferent projection. The line represents efferents. PB, parabrachial nucleus; BF, basal forebrain; VLPO, ventrolateral preoptic nucleus; LH, lateral hypothalamus; SLD, sublaterodorsal tegmental nucleus; vlPAG, ventrolateral periaqueopctal gray; DRN, dorsal raphe nucleus; PZ, parafacial zone.
5展望
PB在睡眠覺醒調(diào)控中的重要性日益明確,但其與睡眠覺醒核團之間的纖維聯(lián)系對睡眠覺醒的調(diào)控仍處于推論階段,需要更加直接的證據(jù)予以證明;PB自身亞區(qū)結(jié)構(gòu)復雜,各亞區(qū)對睡眠覺醒的作用并不完全清楚;PB中神經(jīng)元具有異質(zhì)性,這些不同神經(jīng)元對睡眠覺醒的調(diào)節(jié)作用也不明確;PB與其他神經(jīng)核團及環(huán)路間關系網(wǎng)絡龐大,目前的研究仍有許多未探明之處,需要更多科研資源的投入。但隨著科技的進步,社會的發(fā)展,相信人類終將能解決這些問題。
參考文獻:
[1]Sakai K, Crochet S. Increase in antidromic excitability in presumed serotonergic dorsal raphe neurons during paradoxical sleep in the cat[J].BrainRes, 2001, 898(2) : 332-41.
[2]Carter M E, Yizhar O, Chikahisa S, et al. Tuning arousal with optogenetic modulation of locus coeruleus neurons[J].NatNeurosci, 2010,13(12) :1526-33.
[3]Huang Z L, Qu W M, Li W D, et al. Arousal effect of orexin A depends on activation of the histaminergic system[J].ProcNatlAcadSciUSA, 2001,98(17) : 9965-70.
[4]Huang Z L, Sato Y, Mochizuki T, et al. Prostaglandin E2 activates the histaminergic system via the EP4 receptor to induce wakefulness in rats[J].JNeurosci, 2003,23(14) :5975-83.
[5]Espana R A, Valentino R J, Berridge C W. Fos immunoreactivity in hypocretin-synthesizing and hypocretin-1 receptor-expressing neurons: effects of diurnal and nocturnal spontaneous waking, stress and hypocretin-1 administration[J].Neuroscience, 2003,121(1) :201-17.
[6]Greco M A, Fuller P M, Jhou T C, et al. Opioidergic projections to sleep-active neurons in the ventrolateral preoptic nucleus[J].BrainRes, 2008,1245 :96-107.
[7]Anaclet C, Ferrari L, Arrigoni E, et al. The GABAergic parafacial zone is a medullary slow wave sleep-promoting center[J].NatNeurosci, 2014,17(9) :1217-24.
[8]Fulwiler C E, Saper C B. Subnuclear organization of the efferent connections of the parabrachial nucleus in the rat[J].BrainRes, 1984,319(3) :229-59.
[9]Wu Q, Clark M S, Palmiter R D. Deciphering a neuronal circuit that mediates appetite[J].Nature, 2012,483(7391) :594-7.
[10]Morrison S F, Nakamura K. Central neural pathways for thermoregulation[J].FrontBiosci(LandmarkEd), 2011,16:74-104.
[11]Gauriau C, Bernard J F. Pain pathways and parabrachial circuits in the rat[J].ExpPhysiol, 2002,87(2) :251-8.
[12]Strobel C, Hunt S, Sullivan R, et al.Emotional regulation of pain: the role of noradrenaline in the amygdala[J].SciChinaLifeSci, 2014,57(4):384-90.
[13]Dutschmann M, Dick T E. Pontine mechanisms of respiratory control[J].ComprPhysiol, 2012,2(4):2443-69.
[14]Kaur S, Pedersen N P, Yokota S, et al.Glutamatergic signaling from the parabrachial nucleus plays a critical role in hypercapnic arousal[J].JNeurosci, 2013,33(18):7627-40.
[15]Fuller P, Sherman D, Pedersen N P, et al. Reassessment of the structural basis of the ascending arousal system[J].JComparativeNeurol, 2011,519(5) : 933-56.
[16]Moruzzi G, Magoun H W. Brain stem reticular formation and activation of the EEG[J].ElectroencephalogrClinNeurophysiol, 1949,1(4) :455-73.
[17]Lu J, Sherman D, Devor M,et al. A putative flip-flop switch for control of REM sleep[J].Nature, 2006,441(7093) :589-94.
[18]Zant J C, Rozov S, Wigren H K, et al. Histamine release in the basal forebrain mediates cortical activation through cholinergic neurons[J].JNeurosci, 2012,32(38):13244-54.
[19]Butcher L L, Semba K. Reassessing the cholinergic basal forebrain: nomenclature schemata and concepts[J].TrendsNeurosci, 1989,12(12):483-5.
[20]Szymusiak R, Alam N, Steininger T L, McGinty D. Sleep-waking discharge patterns of ventrolateral preoptic/anterior hypothalamic neurons in rats[J].BrainRes, 1998,803(1-2):178-88.
[21]Kiyashchenko L I, Mileykovskiy B Y, Maidment N, et al. Release of hypocretin(orexin) during waking and sleep states[J].JNeurosci, 2002,22(13) :5282-6.
[22]Lee M G, Hassani O K, Jones B E. Discharge of identified orexin/hypocretin neurons across the sleep-waking cycle[J].JNeurosci, 2005,25(28):6716-20.
[23]Berridge C W, Espana R A. Hypocretins: waking, arousal, or action[J]?Neuron, 2005,46(5) :696-8.
[24]Espana R A, Valentino R J, Berridge C W. Fos immunoreactivity in hypocretin-synthesizing and hypocretin-1 receptor-expressing neurons: effects of diurnal and nocturnal spontaneous waking, stress and hypocretin-1 administration[J].Neuroscience, 2003,121(1):201-17.
[25]Cornwall J, Phillipson O T. Afferent projections to the parafascicular thalamic nucleus of the rat, as shown by the retrograde transport of wheat germ agglutinin[J].BrainResBull, 1988,20(2): 139-50.
[26]Newman D B, Ginsberg C Y. Brainstem reticular nuclei that project to the thalamus in rats: a retrograde tracer study[J].BrainBehavEvol, 1994,44(1): 1-39.
[27]Paré D, Smith Y, Parent A, Steriade M. Projections of brainstem core cholinergic and non-cholinergic neurons of cat to intralaminar and reticular thalamic nuclei[J].Neuroscience, 1988,25(1): 69-86.
[28]Steriade M, Glenn L L. Neocortical and caudate projections of intralaminar thalamic neurons and their synaptic excitation from midbrain reticular core[J].JNeurophysiol, 1982,48(2):352-71.
[29]Portas C M, Rees G, Howseman A M, et al. A specific role for the thalamus in mediating the interaction of attention and arousal in humans[J].JNeurosci, 1998,18(21) :8979-89.
[30]趙樂章,章功良,高雋,等. 中縫背核投射到基底外側(cè)杏仁核的5-羥色胺能纖維對睡眠的調(diào)節(jié)作用[J].中國藥理學通報,2003,19(1):77-9.
[30]Zhao L Z, Zhang G L, Gao J, et al. The serotonin projection from the dorsal raphe nucleus to the basolateral amygdala participated in sleep regulation[J].ChinPharmacolBull,2003,19(1):77-9.
[31]Lee H S, Kim M A, Valentino R J,et al. Glutamatergic afferent projections to the dorsal raphe nucleus of the rat[J].BrainRes, 2003,963(1-2) : 57-71.
[32]Torterolo P, Sampogna S, Chase M H. A restricted parabrachial pontine region is active during non-rapid eye movement sleep[J].Neuroscience, 2011,190 :184-93.
[33]Anaclet C, Lin J S, Vetrivelan R, et al. Identification and characterization of a sleep-active cell group in the rostral medullary brainstem[J].JNeurosci, 2012,32(50) :17970-6.
[34]Suchecki D, Duarte P B, Tufik S. Sleep rebound in animals deprived of paradoxical sleep by the modified multiple platform method[J].BrainRes, 2000,875(1-2) :14-22.
[35]Verret L, Léger L, Fort P, Luppi P H. Cholinergic and noncholinergic brainstem neurons expressing Fos after paradoxical(REM) sleep deprivation and recovery[J].EurJNeurosci, 2005,21(9) :2488-504.
[36]Vetrivelan R, Chang C, Lu J. Muscle tone regulation during REM sleep: neural circuitry and clinical significance[J].ArchItalBiol, 2011,149(4) :348-66.
[37]Clement O, Sapin E, Bérod A, et al. Evidence that neurons of the sublaterodorsal tegmental nucleus triggering paradoxical (REM) sleep are glutamatergic[J].Sleep, 2011,34(4) :419-23.
Regulatory effects of PB on sleep and wakefulness
ZHAO Min-rui1, WANG Dian-ru2,YANG Jie-ren1,WANG Yi-qun2
(1.DeptofPharmacology,WannanMedicalCollege,WuhuAnhui241000,China;2.DeptofPharmacology,BasicMedicalCollege,FudanUniversity,Shanghai200032,China)
Abstract:The parabrachial nucleus (PB) is made up of gray matter around the Pons combination(BC), mainly consisting of glutamatergic, GABAergic and enkephalinergic neurons. PB is connected to hypothalamus and basal forebrain through a network of nerve fibers. Specific lesion of the entire parabrachial complex in animals leads to a deep coma. PB also projects to the non-rapid eye movement(NREM)-related regions including the ventrolateral preoptic, and receives the projections from the parafacial zone. Activation of the GABAergic neurons in parafacial zone can promote NREM sleep, which indicates that PB participates in NREM sleep. Furthermore, the lateral PB is actived when rapid eye movement(REM) sleep is deprived. In conclusion, PB participates in regulating wakefulness, NREM and REM sleep. This review summarizes the advances in the roles of PB in sleep-wake regulation.
Key words:parabrachial nucleus; wakefulness; NREM sleep; REM sleep;glutamatergic neuron;projection
收稿日期:2016-01-11,修回日期:2016-02-14
基金項目:國家自然科學基金面上項目(No 81571295)
作者簡介:趙敏銳(1990 -),男,碩士生,研究方向:臨床藥理學,E-mail:15601912979@163.com;
doi:10.3969/j.issn.1001-1978.2016.06.006
文獻標志碼:A
文章編號:1001-1978(2016)06-0764-04
中國圖書分類號:R-05;R322.81;R338.63
網(wǎng)絡出版時間:2016-5-25 15:39網(wǎng)絡出版地址:http://www.cnki.net/kcms/detail/34.1086.R.20160525.1539.012.html
楊解人(1955 - ),女,教授,碩士生導師,研究方向:臨床藥理學,通訊作者,E-mail: jryang1955@sina.com;
王毅群(1982 - ),女,博士,副教授,研究方向:睡眠醫(yī)學, 通訊作者, E-mail: 061101069@fudan.edu.cn