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Vibration-reduced anxiety-like behavior relies on ameliorating abnormalities of the somatosensory cortex and medial prefrontal cortex 被引量:1
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作者 Afzal Misrani Sidra Tabassum +8 位作者 Tintin Wang Huixian Huang Jinxiang Jiang Hongjun Diao Yanping Zhao Zhen Huang Shaohua Tan Cheng Long Li Yang 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第6期1351-1359,共9页
Tibetan singing bowls emit low-frequency sounds and produce perceptible harmonic tones and vibrations through manual tapping.The sounds the singing bowls produce have been shown to enhance relaxation and reduce anxiet... Tibetan singing bowls emit low-frequency sounds and produce perceptible harmonic tones and vibrations through manual tapping.The sounds the singing bowls produce have been shown to enhance relaxation and reduce anxiety.However,the underlying mechanism remains unclear.In this study,we used chronic restraint stress or sleep deprivation to establish mouse models of anxiety that exhibit anxiety-like behaviors.We then supplied treatment with singing bowls in a bottomless cage placed on the top of a cushion.We found that unlike in humans,the combination of harmonic tones and vibrations did not improve anxietylike behaviors in mice,while individual vibration components did.Additionally,the vibration of singing bowls increased the level of N-methyl-D-aspartate receptor 1 in the somatosensory cortex and prefrontal cortex of the mice,decreased the level ofγ-aminobutyric acid A(GABA)receptorα1 subtype,reduced the level of CaMKII in the prefrontal cortex,and increased the number of GABAergic interneurons.At the same time,electrophysiological tests showed that the vibration of singing bowls significantly reduced the abnormal low-frequency gamma oscillation peak frequency in the medial prefrontal cortex caused by stress restraint pressure and sleep deprivation.Results from this study indicate that the vibration of singing bowls can alleviate anxiety-like behaviors by reducing abnormal molecular and electrophysiological events in somatosensory and medial prefrontal cortex. 展开更多
关键词 anxiety medial prefrontal cortex parvalbumin interneuron pressure somatosensory cortex Tibetan singing bowl VIBRATION
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The selective 5-HTIA receptor antagonist WAY-100635 inhibits neuronal activity of the ventromedial prefrontal cortex in a rodent model of Parkinson's disease 被引量:1
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作者 曹健 刘健 +4 位作者 张巧俊 王涛 王爽 韩玲娜 李强 《Neuroscience Bulletin》 SCIE CAS CSCD 2007年第6期315-322,共8页
Objective The ventral part of the medial prefrontal cortex(mPFC)plays an important role in initiation and control of voluntary movement,mood and cognition.However,after the degeneration of the nigrostriatal pathway,... Objective The ventral part of the medial prefrontal cortex(mPFC)plays an important role in initiation and control of voluntary movement,mood and cognition.However,after the degeneration of the nigrostriatal pathway,the neuronal activity of the ventral mPFC and the role of serotonin1A(5-hydroxytryptamine,5-HT1A)receptors in the firing of the neurons are still unknown.The present study is to investigate the change of neuronal activity in the ventral mPFC and the effect of systemic administration of the selective 5-HT1Areceptor antagonist WAY-100635 on the activity of the neurons in normal and 6-hydroxydopamine(6-OHDA)-lesioned rats.Methods Single unit responses were recorded extracellularly with glass microelectrodes from ventral mPFC neurons in normal rats and 6-OHDA unilaterally lesiond rats in vivo.Results 6-OHDA lesion of the substantia nigra pars compacta(SNc)significantly increased the firing rate with no change in the firing pattern of neurons of the ventral mPFC in rats.Systemic administration of WAY-100635(0.1 mg/kg,i.v.)did not change the mean firing rate and firing pattern of ventral mPFC neurons in normal rats.In contrast,WAY-100635 signifi- cantly decreased the mean firing rate of the neurons in rats with 6-OHDA lesion of the SNc.Conclusion These data suggest that the degeneration of the nigrostriatal pathway results in an increase of neuronal activity of ventral mPFC and dysfunction of 5-HT1Areceptor. 展开更多
关键词 medial prefrontal cortex 5-HT1Areceptor WAY-100635 Parkinson's disease ELECTROPHYSIOLOGY
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Neurochemical metabolites in the medial prefrontal cortex in bipolar disorder A proton magnetic resonance spectroscopy study 被引量:2
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作者 Osman zdel Demet Kalayci +3 位作者 Gülfizar Szeri-Varma Yilmaz Kiroglu Selim Tümkaya Tuge Toker-Ugurlu 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第36期2929-2936,共8页
The aim of this study was to investigate proton magnetic resonance spectroscopy metabolite values in the medial prefrontal cortex of individuals with euthymic bipolar disorder. The subjects consisted of 15 patients wi... The aim of this study was to investigate proton magnetic resonance spectroscopy metabolite values in the medial prefrontal cortex of individuals with euthymic bipolar disorder. The subjects consisted of 15 patients with euthymic bipolar disorder type I and 15 healthy controls. We performed proton magnetic resonance spectroscopy of the bilateral medial prefrontal cortex and measured levels of N-acetyl aspartate, choline and creatine. Levels of these three metabolites in the medial prefrontal cortex were found to be lower in patients with bipolar disorder compared with healthy controls. A positive correlation was found between illness duration and choline levels in the right medial prefrontal cortex. Our study suggests that during the euthymic period, there are abnormalities in cellular energy and membrane phospholipid metabolism in the medial prefrontal cortex, and that this may impair neuronal activity and integrity. 展开更多
关键词 bipolar disorder proton magnetic resonance spectroscopy medial prefrontal cortex N-asetylaspartate CHOLINE CREATINE DEGRADATION mood disorder neurochemical metabolite illness duration neural regeneration
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Distinct neuronal excitability alterations of medial prefrontal cortex in early-life neglect model of rats 被引量:3
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作者 Yu Zhang Xiuping Sun +3 位作者 Changsong Dou Xianglei Li Ling Zhang Chuan Qin 《Animal Models and Experimental Medicine》 CSCD 2022年第3期274-280,共7页
Object:Early-life neglect has irreversible emotional effects on the central nervous system.In this work,we aimed to elucidate distinct functional neural changes in me-dial prefrontal cortex(mPFC)of model rats.Methods:... Object:Early-life neglect has irreversible emotional effects on the central nervous system.In this work,we aimed to elucidate distinct functional neural changes in me-dial prefrontal cortex(mPFC)of model rats.Methods:Maternal separation with early weaning was used as a rat model of early-life neglect.The excitation of glutamatergic and GABAergic neurons in rat mPFC was recorded and analyzed by whole-cell patch clamp.Results:Glutamatergic and GABAergic neurons of mPFC were distinguished by typi-cal electrophysiological properties.The excitation of mPFC glutamatergic neurons was significantly increased in male groups,while the excitation of mPFC GABAergic neurons was significant in both female and male groups,but mainly in terms of rest membrane potential and amplitude,respectively.Conclusions:Glutamatergic and GABAergic neurons in medial prefrontal cortex showed different excitability changes in a rat model of early-life neglect,which can contribute to distinct mechanisms for emotional and cognitive manifestations. 展开更多
关键词 early-life neglect model GABAERGIC GLUTAMATERGIC maternal separation with early weaning medial prefrontal cortex neuronal excitability
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Lesions of mediodorsal thalamic nucleus reverse abnormal firing of the medial prefrontal cortex neurons in parkinsonian rats 被引量:2
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作者 Ling-Ling Fan Bo Deng +3 位作者 Jun-Bao Yan Zhi-Hong Hu Ai-Hong Ren Dong-Wei Yang 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第9期1635-1642,共8页
The dysfunction of the medial prefrontal cortex is associated with affective disorders and non-motor features in Parkinson’s disease.However,the exact role of the mediodorsal thalamic nucleus in the function of the p... The dysfunction of the medial prefrontal cortex is associated with affective disorders and non-motor features in Parkinson’s disease.However,the exact role of the mediodorsal thalamic nucleus in the function of the prefrontal cortex remains unclear.To study the possible effects of the mediodorsal thalamic nucleus on the neurological function of the medial prefrontal cortex,a model of Parkinson’s disease was established by injecting 8μg 6-hydroxydopamine into the substantia nigra compacta of rats.After 1 or 3 weeks,0.3μg ibotenic acid was injected into the mediodorsal thalamic nucleus of the midbrain.At 3 or 5 weeks after the initial injury,neuronal discharge in medial prefrontal cortex of rat brain was determined electrophysiologically.The numbers of dopamine-positive neurons and tyrosine hydroxylase immunoreactivity in substantia nigra compacta and ventral tegmental area were detected by immunohistochemical staining.Results demonstrated that after injury,the immunoreactivity of dopamine neurons and tyrosine hydroxylase decreased in the substantia nigra compacta and ventral tegmental areas of rats.Compared with normal medial prefrontal cortical neurons,at 3 and 5 weeks after substantia nigra compacta injury,the discharge frequency of pyramidal neurons increased and the discharge pattern of these neurons tended to be a burst-discharge,with an increased discharge interval.The discharge frequency of interneurons decreased and the discharge pattern also tended to be a burst-discharge,but the discharge interval was only higher at 3 weeks.At 3 weeks after the combined lesions,the discharge frequency,discharge pattern and discharge interval were restored to a normal level in pyramidal neurons and interneurons in medial prefrontal cortex.These findings have confirmed that mediodorsal thalamic nucleus is involved in regulating neuronal activities of the medial prefrontal cortex.The changes in the function of the mediodorsal thalamic nucleus may be associated with the abnormal discharge activity of the medial prefrontal cortex neurons after substantia nigra compacta injury.All experimental procedures were approved by the Institutional Animal Care and Use Committee of Xi’an Jiaotong University,China(approval No.XJTULAC2017-067)on August 26,2017. 展开更多
关键词 nerve REGENERATION Parkinson's disease mediodorsal THALAMIC nucleus medial PREFRONTAL cortex PYRAMIDAL NEURONS INTERNEURONS discharge neural REGENERATION
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High frequency heart rate variability evoked by repetitive transcranial magnetic stimulation over the medial prefrontal cortex: A preliminary investigation on brain processing of acute stressor-evoked cardiovascular reactivity
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作者 Eduardo Manuel Goncalves Saul Neves de Jesus 《Open Journal of Psychiatry》 2013年第4期335-344,共10页
Introduction: Transcranial Magnetic Stimulation (TMS) is a non-invasive technique for brain stimulation. Repetitive TMS (rTMS) over the medial Prefrontal Cortex (mPFC), Broadman Area 10 (BA10) may stimulate transynapt... Introduction: Transcranial Magnetic Stimulation (TMS) is a non-invasive technique for brain stimulation. Repetitive TMS (rTMS) over the medial Prefrontal Cortex (mPFC), Broadman Area 10 (BA10) may stimulate transynaptically perigenual Anterior Cingulate Cortex (pACC, BA 33), insula, amigdala, hypothalamus and connected branches of the Autonomic Nervous System (ANS) involved in stressorevoked cardiovascular reactivity. Stressors are associated with an increase in sympathetic cardiac control, a decrease in parasympathetic control, or both, and, consequently, an increase in systolic/stroke volume, total vascular impedance/resistance and heart rate, a decrease of baroreflex sensitivity, i.e., an increase in blood pressure/arterial tension. Objectives and Aims: The present work aims, using TMS and accordingly to Gianaros modeling, based on functional neuroimaging studies and previous neuroanatomical data from animal models, to probe the connectivity of brain systems involved in stressor-evoked cardiovascular reactivity and to explore TMS potential as a tool for detection and stratification of individual differences concerning this reactivity and hemorreological risk factors correlated with the development of Coronary Heart Disease (CHD). Methods: Both subjects, a 52 years old male and a 40 years old female with previous increased Low Frequency (LF)/High Frequency (HF) Heart Rate Variability (HRV) ratios (respectively, 4.209/3.028) without decompensated cardiorespiratory symptoms, gave informed consent, and ethico-legal issues have been observed. Electroencephalographic (EEG) monitoring has been performed for safety purposes. Immediately after administration, over the mPFC, of 15 pulses of rTMS, during 60 second, with an inductive electrical current, at the stimulating coil, of 85.9 Ampère per μsecond and 66 Ampère per μsecond, respectively, for male and female subjects (a “figure-of-eight” coil and magnetic stimulator MagLite, Dantec/Medtronic, have been used), HRV spectrum analysis (cStress software) has been performed (during 5 minutes, in supine position). Results: In both subjects, LF power, HF power and LF/HF ratio results, before and after rTMS administration, pointed towards sympathetic attenuation and parasympathetic augmentation (respectively, in male/female subject: decreased LF power—65.1 nu/69.3 nu, before rTMS;56.1 nu/41.6 nu, after rTMS;increased HF power—15.5 nu/22.9 nu, before rTMS;30.9 nu/45.5 nu, after rTMS). Conclusions: In this preliminary investigation, the existence of a link between “mind” and heart’s function has been put in evidence, through a reversible “virtual” lesion, of brain systems involved in cardiovascular control, caused by TMS. Repetitive TMS over mPFC decreased brain function involved in stressorevoked cardiovascular reactivity, suggesting the importance of TMS in the management of stress-related cardiovascular disorders. 展开更多
关键词 Repetitive Transcranial Magnetic Stimulation (rTMS) medial Prefrontal cortex (mPFC) Anterior Cingulate cortex (ACC) Amigdala Autonomic Nervous System (ANS) Heart’s Conducting System Acute Sressor-Evoked Cardiovascular (Blood Pressure) Reactivity Heart Rate Variability (HRV)
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自主跑步运动对APP/PS1小鼠内侧前额叶皮质少突胶质细胞的作用
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作者 熊瑶 周春妮 +9 位作者 蒋林 张钐钐 朱琳 郭一静 周宇宁 黄杜娟 李静 祝佩林 刘梅 唐勇 《重庆医科大学学报》 CAS CSCD 北大核心 2024年第8期967-977,共11页
目的:研究自主跑步运动对APP/PS1双转基因AD(Alzheimer’s disease,AD)模型小鼠内侧前额叶皮质(medial prefrontal cortex,mPFC)内少突胶质细胞数量,少突胶质细胞分化、成熟以及髓鞘形成的作用。方法:将10月龄雄性转基因AD模型小鼠随机... 目的:研究自主跑步运动对APP/PS1双转基因AD(Alzheimer’s disease,AD)模型小鼠内侧前额叶皮质(medial prefrontal cortex,mPFC)内少突胶质细胞数量,少突胶质细胞分化、成熟以及髓鞘形成的作用。方法:将10月龄雄性转基因AD模型小鼠随机分为AD组和AD跑步(AD+RUN)组,另外将同月龄同窝生野生型小鼠随机分为正常(WT)组和正常跑步(WT+RUN)组。其中跑步组于跑步笼内给予3个月自主跑步锻炼,AD组和WT组不做处理。跑步锻炼结束后4组小鼠同时给予行为学测试,用Morris水迷宫检测小鼠空间学习、记忆能力;用Y迷宫检测小鼠工作记忆能力;用新物体识别实验检测小鼠的认知记忆功能;利用无偏体视学技术和免疫组化技术相结合精确定量小鼠大脑mPFC内成熟少突胶质细胞(CC1^(+))总数量;同时分析小鼠mPFC内边缘皮层、Ⅱ、Ⅲ、Ⅵ、Ⅵ层成熟少突胶质细胞密度;利用免疫荧光和激光共聚焦显微镜分析小鼠mPFC内未成熟少突胶质细胞(PDGFα^(+)/Olig2^(+))密度、髓鞘标志物髓鞘碱性蛋白(myelin basic protein,MBP)荧光强度。结果:AD+RUN组和WT组在Morris水迷宫、Y迷宫以及新物体识别实验中的表现优于AD组,AD组mPFC内MBP荧光强度明显低于WT组(P<0.05),而AD+RUN组mPFC内MBP荧光强度明显大于AD组(P<0.001)。AD+RUN组mPFC内CC1^(+)细胞总数较AD组明显增加(P<0.05)。AD+RUN组mPFC内第Ⅲ层和第Ⅴ层CC1^(+)细胞密度较AD组明显增高(P<0.05),AD组mPFC内第Ⅴ层和第Ⅵ层CC1^(+)细胞密度较WT组明显降低(P<0.05)。AD组mPFC内PDGFα^(+)/Olig2^(+)细胞密度明显大于WT组,而AD+RUN组mPFC内PDGFα^(+)/Olig2^(+)细胞密度明显小于AD组(P<0.05)。结论:自主跑步运动能促进AD小鼠少突胶质细胞分化和髓鞘形成,这可能与运动能改善APP/PS1转基因AD小鼠的学习记忆能力有关。 展开更多
关键词 阿尔茨海默病 自主跑步运动 内侧前额叶皮质 少突胶质细胞 髓鞘
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内侧前额叶皮质谷氨酸能神经元参与CD1小鼠攻击行为的机制研究
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作者 李加欣 黄露 +5 位作者 龙宗泓 张敏 温惠中 熊鹰 李洪 白福海 《陆军军医大学学报》 CAS CSCD 北大核心 2024年第12期1336-1343,共8页
目的研究CD1小鼠发动攻击行为的内在神经机制。方法通过驻地入侵实验筛选出具有攻击行为的CD1小鼠,攻击配对偏好进一步验证后使用c-Fos标记全脑激活的脑区,通过免疫荧光双标实验分析攻击行为激活了哪种类型的神经元,最后使用光遗传学调... 目的研究CD1小鼠发动攻击行为的内在神经机制。方法通过驻地入侵实验筛选出具有攻击行为的CD1小鼠,攻击配对偏好进一步验证后使用c-Fos标记全脑激活的脑区,通过免疫荧光双标实验分析攻击行为激活了哪种类型的神经元,最后使用光遗传学调控该类神经元的活性,观察其对攻击行为的影响。结果通过c-Fos筛选,约82%的CD1小鼠表现出攻击行为;攻击行为发生后主要激活内侧前额叶皮质(medial prefrontal cortex,mPFC),免疫荧光双标结果显示mPFC脑区c-Fos阳性神经元主要是谷氨酸能神经元;最后,我们通过光遗传激活mPFC脑区谷氨酸能神经元,发现其能够抑制CD1小鼠的攻击行为;相反,光遗传抑制mPFC脑区谷氨酸能神经元,能够促进CD1小鼠的攻击行为。结论mPFC脑区谷氨酸能神经元是调控CD1小鼠发动攻击行为的重要组成部分。 展开更多
关键词 MPFC 谷氨酸能神经元 攻击行为
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丘脑连接核通过内侧内嗅皮层调控空间记忆初步研究
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作者 陆敏敏 肖琴 +4 位作者 罗心为 高添宇 张琪敏 张小龙 何超 《陆军军医大学学报》 CAS CSCD 北大核心 2024年第6期507-514,共8页
目的 初步探究丘脑连接核(thalamic nucleus reuniens, RE)调控内侧内嗅皮层(medial entorhinal cortex, MEC)相关的空间记忆及机制。方法 Retrobeads介导的逆行示踪技术结合顺行示踪技术鉴定RE与MEC脑区之间的形态学联系。利用光纤记... 目的 初步探究丘脑连接核(thalamic nucleus reuniens, RE)调控内侧内嗅皮层(medial entorhinal cortex, MEC)相关的空间记忆及机制。方法 Retrobeads介导的逆行示踪技术结合顺行示踪技术鉴定RE与MEC脑区之间的形态学联系。利用光纤记录技术,记录并分析小鼠在空旷场探索时投射至MEC的RE神经元的活动特征。采用化学遗传学抑制RE-MEC通路探究对空间记忆的影响。结果 逆行与顺行示踪实验验证了RE发出神经纤维投射至MEC,且主要分布在浅层。光纤记录实验发现投射至MEC的RE神经元在小鼠在站立、抬头行为时活动增强,而在静止和理毛时活动减弱(P<0.01),且这群神经元的钙活动与小鼠运动速度呈正相关(R^(2)=0.077 3,P<0.001)。与对照组比较,化学遗传学抑制RE-MEC通路明显增加处理组小鼠在空旷场中探索的路程(P<0.01),而对中央区的停留时间、刻板理毛行为次数无影响。结论 RE-MEC通路在空间探索行为期间激活,参与空间学习记忆;抑制RE-MEC通路损害小鼠的空间记忆,延长小鼠对新环境空间信息进行表征的探索距离,而对小鼠的情绪无影响。 展开更多
关键词 丘脑连接核 内侧内嗅皮层 空间记忆 空旷场
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In vivo imaging reveals a synchronized correlation among neurotransmitter dynamics during propofol and sevoflurane anesthesia 被引量:1
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作者 Gao-Lin Qiu Li-Jun Peng +6 位作者 Peng Wang Zhi-Lai Yang Ji-Qian Zhang Hu Liu Xiao-Na Zhu Jin Rao Xue-Sheng Liu 《Zoological Research》 SCIE CSCD 2024年第3期679-690,共12页
General anesthesia is widely applied in clinical practice.However,the precise mechanism of loss of consciousness induced by general anesthetics remains unknown.Here,we measured the dynamics of five neurotransmitters,i... General anesthesia is widely applied in clinical practice.However,the precise mechanism of loss of consciousness induced by general anesthetics remains unknown.Here,we measured the dynamics of five neurotransmitters,includingγ-aminobutyric acid,glutamate,norepinephrine,acetylcholine,and dopamine,in the medial prefrontal cortex and primary visual cortex of C57BL/6 mice through in vivo fiber photometry and genetically encoded neurotransmitter sensors under anesthesia to reveal the mechanism of general anesthesia from a neurotransmitter perspective.Results revealed that the concentrations of γ-aminobutyric acid,glutamate,norepinephrine,and acetylcholine increased in the cortex during propofol-induced loss of consciousness.Dopamine levels did not change following the hypnotic dose of propofol but increased significantly following surgical doses of propofol anesthesia.Notably,the concentrations of the five neurotransmitters generally decreased during sevoflurane-induced loss of consciousness.Furthermore,the neurotransmitter dynamic networks were not synchronized in the non-anesthesia groups but were highly synchronized in the anesthetic groups.These findings suggest that neurotransmitter dynamic network synchronization may cause anesthetic-induced loss of consciousness. 展开更多
关键词 General anesthesia Loss of consciousness In vivo neurotransmitter imaging medial prefrontal cortex Primary visual cortex
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Brain region-specific roles of brain-derived neurotrophic factor in social stress-induced depressive-like behavior 被引量:1
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作者 Man Han Deyang Zeng +7 位作者 Wei Tan Xingxing Chen Shuyuan Bai Qiong Wu Yushan Chen Zhen Wei Yufei Mei Yan Zeng 《Neural Regeneration Research》 SCIE CAS 2025年第1期159-173,共15页
Brain-derived neurotrophic factor is a key factor in stress adaptation and avoidance of a social stress behavioral response.Recent studies have shown that brain-derived neurotrophic factor expression in stressed mice ... Brain-derived neurotrophic factor is a key factor in stress adaptation and avoidance of a social stress behavioral response.Recent studies have shown that brain-derived neurotrophic factor expression in stressed mice is brain region–specific,particularly involving the corticolimbic system,including the ventral tegmental area,nucleus accumbens,prefrontal cortex,amygdala,and hippocampus.Determining how brain-derived neurotrophic factor participates in stress processing in different brain regions will deepen our understanding of social stress psychopathology.In this review,we discuss the expression and regulation of brain-derived neurotrophic factor in stress-sensitive brain regions closely related to the pathophysiology of depression.We focused on associated molecular pathways and neural circuits,with special attention to the brain-derived neurotrophic factor–tropomyosin receptor kinase B signaling pathway and the ventral tegmental area–nucleus accumbens dopamine circuit.We determined that stress-induced alterations in brain-derived neurotrophic factor levels are likely related to the nature,severity,and duration of stress,especially in the above-mentioned brain regions of the corticolimbic system.Therefore,BDNF might be a biological indicator regulating stress-related processes in various brain regions. 展开更多
关键词 AMYGDALA chronic mild stress chronic social defeat stress corticolimbic system DEPRESSION HIPPOCAMPUS medial prefrontal cortex nucleus accumbens social stress models ventral tegmental area
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跑步对抑郁大鼠内侧前额叶皮质兴奋性突触的影响
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作者 杨雯宇 肖倩 +6 位作者 秦露 黄杜娟 邓宇辉 周梅 王舜 唐勇 黄春霞 《重庆医科大学学报》 CAS CSCD 北大核心 2024年第8期959-966,共8页
目的:精确定量研究跑步锻炼对慢性束缚应激(chronic restraint stress,CRS)诱导的抑郁模型大鼠内侧前额叶皮质(medial prefrontal cortex,mPFC)内Sp^(+)兴奋性突触数量的影响。方法:选取雄性SD大鼠(54只),经过适应性喂养和糖水基线调整,... 目的:精确定量研究跑步锻炼对慢性束缚应激(chronic restraint stress,CRS)诱导的抑郁模型大鼠内侧前额叶皮质(medial prefrontal cortex,mPFC)内Sp^(+)兴奋性突触数量的影响。方法:选取雄性SD大鼠(54只),经过适应性喂养和糖水基线调整,在CRS模型建立成功后随机分为对照组、抑郁模型组和模型跑步组,其中模型跑步组大鼠在束缚的第5周开始进行为期4周的跑步锻炼干预。最后,对各组大鼠进行行为学测试,并运用免疫组织化学技术结合现代体视学方法对各组大鼠mPFC内Sp^(+)兴奋性突触变化进行精确定量研究。结果:与对照组[(97.14±2.64)%]相比,抑郁模型组和模型跑步组大鼠糖精偏好百分比[(89.62±6.05)%]减少(P=0.002),体质量的增长减缓,强迫游泳实验中大鼠的不动时间和新环境进食抑制实验的进食潜伏期增加。4周的跑步锻炼可以有效减缓抑郁模型组大鼠糖精偏好百分比的下降[(89.30±5.06)%vs.(97.30±2.08)%,P=0.018],降低强迫游泳实验中抑郁大鼠的不动时间,并在新环境进食抑制实验中缩短抑郁大鼠的进食潜伏期。体视学精确定量分析结果显示,抑郁模型组大鼠mPFC内的Sp^(+)兴奋性突触总量[(9.98±0.35)×10^(8)个]低于对照组[(11.50±1.27)×10^(8)个,P=0.013]。而跑步锻炼则可以逆转抑郁大鼠mPFC内的Sp^(+)兴奋性突触总数的减少[模型跑步组(11.30±1.21)×10^(8)个,P=0.003]。结论:跑步锻炼干预后CRS抑郁模型大鼠mPFC的Sp^(+)兴奋性突触数量的改变可能是跑步锻炼发挥抗抑郁作用的神经生物学基础之一。 展开更多
关键词 跑步锻炼 抑郁症 兴奋性突触 内侧前额叶皮质 体视学
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腹侧被盖区-内侧前额叶皮质神经环路在觉醒调控过程中作用的研究进展
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作者 郝孟楠 梁小丽 张益 《中国医学科学院学报》 CAS CSCD 北大核心 2024年第3期402-408,共7页
腹侧被盖区(VTA)与内侧前额叶皮层(mPFC)之间存在相互神经投射,并形成环路,近年来的研究显示该环路在睡眠与全身麻醉的觉醒调控中发挥着重要的作用。本文通过对VTA与mPFC的解剖结构、二者中的各种神经元及投射通路在觉醒调控过程中的作... 腹侧被盖区(VTA)与内侧前额叶皮层(mPFC)之间存在相互神经投射,并形成环路,近年来的研究显示该环路在睡眠与全身麻醉的觉醒调控中发挥着重要的作用。本文通过对VTA与mPFC的解剖结构、二者中的各种神经元及投射通路在觉醒调控过程中的作用进行综述,期望为睡眠觉醒与全身麻醉机制研究提供新的思路。 展开更多
关键词 中脑腹侧被盖区 内侧前额叶皮层 神经环路 觉醒
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内侧前额叶皮质神经元参与二苯基环丙烯酮诱导的小鼠瘙痒
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作者 刘静雯 朱媛媛 +2 位作者 戴梓怡 黄静 白占涛 《神经解剖学杂志》 CAS CSCD 北大核心 2024年第2期137-144,共8页
目的:建立接触性皮炎瘙痒模型,检测痒行为和焦虑、抑郁样行为;观察内侧前额叶皮质(mPFC)神经元激活情况,为其参与痒觉信息的调控提供形态学证据。方法:采用二苯基环丙烯酮(DCP)涂抹小鼠颈背部构建接触性皮炎瘙痒模型,检测小鼠的搔抓行... 目的:建立接触性皮炎瘙痒模型,检测痒行为和焦虑、抑郁样行为;观察内侧前额叶皮质(mPFC)神经元激活情况,为其参与痒觉信息的调控提供形态学证据。方法:采用二苯基环丙烯酮(DCP)涂抹小鼠颈背部构建接触性皮炎瘙痒模型,检测小鼠的搔抓行为。开展旷场及悬尾行为学实验,探究小鼠在接触性皮炎状态下的焦虑、抑郁样行为。运用免疫荧光染色技术探究接触性皮炎模型小鼠mPFC内c-Fos及p-ERK1/2阳性细胞分布情况。结果:成功建立接触性皮炎瘙痒模型,模型组小鼠半小时内的抓挠次数明显高于对照组(P<0.05)。旷场结果显示接触性皮炎模型组小鼠在中央区域的时间和距离显著减少。悬尾实验结果提示接触性皮炎模型组小鼠不动的时间显著增加(P<0.05)。与对照组相比,接触性皮炎实验组小鼠mPFC内c-Fos阳性细胞和p-ERK1/2阳性细胞数量显著增加,具有统计学差异(P<0.05)。结论:接触性皮炎实验组小鼠抓挠次数显著增多,并且诱发焦虑、抑郁样行为。接触性皮炎状态下,mPFC内神经元激活,为mPFC神经元参与接触性皮炎瘙痒及共患焦虑、抑郁等情感障碍提供了形态学依据。 展开更多
关键词 接触性皮炎 瘙痒 内侧前额叶皮质 C-FOS P-ERK1/2 小鼠
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调控内侧前额叶皮质向丘脑室旁核投射通路对小鼠痛信息传递的影响
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作者 朱柯桦 吴凤玲 +4 位作者 孙寒雪 洪洁 陈思海 史娟 李云庆 《解剖学报》 CAS CSCD 2024年第4期430-436,共7页
目的探讨小鼠内侧前额叶皮质(mPFC)-丘脑室旁核(PVT)通路的投射神经元的性质及调控该通路对生理痛和急性痛的影响。方法谷氨酸脱羧酶67-绿色荧光蛋白(GAD67-GFP)基因敲入小鼠3只,用于形态学追踪实验,C57小鼠27只,用于行为学观察实验。... 目的探讨小鼠内侧前额叶皮质(mPFC)-丘脑室旁核(PVT)通路的投射神经元的性质及调控该通路对生理痛和急性痛的影响。方法谷氨酸脱羧酶67-绿色荧光蛋白(GAD67-GFP)基因敲入小鼠3只,用于形态学追踪实验,C57小鼠27只,用于行为学观察实验。将霍乱毒素B亚基(CTB)注入GAD67-GFP转基因小鼠的PVT内,观察向PVT投射的mPFC神经元的性质,使用化学遗传学方法调控mPFC-PVT通路,观察其对小鼠机械痛、热痛、冷痛以及辣椒素诱导的急性炎性痛的影响。结果mPFC内CTB标记神经元主要分布于Ⅴ层和Ⅵ层,且与GAD67-GFP不共标;化学遗传学方法激活mPFC-PVT通路可显著降低小鼠的机械痛阈值(P<0.0001),缩小热痛潜伏期(P<0.001),对冷痛无明显的影响;抑制此通路则可显著提高动物的机械性痛阈(P<0.05);辣椒素诱导急性炎性痛模型下激活此通路引起小鼠舔爪时间增加(P<0.05)。结论mPFC-PVT通路为非γ-氨基丁酸(GABA)能的神经通路,激活该通路可促进小鼠的机械痛、热痛和急性炎性痛反应。 展开更多
关键词 内侧前额叶皮质 丘脑室旁核 生理痛 急性炎性痛 化学遗传学 小鼠
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股骨转子间骨折临床特点及治疗研究进展
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作者 王广(综述) 鄢陵(审校) 《临床骨科杂志》 2024年第4期601-606,共6页
股骨转子间骨折(IFF)好发于伴有骨质疏松的中老年患者中,其发病率逐年上升。IFF的治疗目前仍是临床的难点及研究的热点,非手术治疗易发生髋内翻、骨折畸形愈合等并发症,且患者需较长时间的卧床,坠积性肺炎、压疮、泌尿系统感染等时有发... 股骨转子间骨折(IFF)好发于伴有骨质疏松的中老年患者中,其发病率逐年上升。IFF的治疗目前仍是临床的难点及研究的热点,非手术治疗易发生髋内翻、骨折畸形愈合等并发症,且患者需较长时间的卧床,坠积性肺炎、压疮、泌尿系统感染等时有发生。因此,目前多主张在患者能耐受的条件下积极手术干预,从而缩短患者的卧床时间,降低后期并发症发生率,提高患者生活质量。该文围绕IFF的临床特点及治疗研究进展进行综述,探讨不同治疗方法的优、缺点,从而为临床治疗提供更科学的理论依据。 展开更多
关键词 转子间骨折 外侧壁 髓内外联合固定 内侧皮质支撑
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七氟醚麻醉过程中mPFC脑区不同类型神经元胞外腺苷递质动态变化研究
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作者 汪莹 刘继 +4 位作者 徐茂 王家敏 王袁 罗天元 余守洋 《遵义医科大学学报》 2024年第5期471-477,共7页
目的探究在七氟醚麻醉致意识消失与恢复过程中内侧前额叶皮层(mPFC)中谷氨酸能的锥体(Pyr)神经元与γ-氨基丁酸(GABA)能神经元的两种亚型:小清蛋白(PV)阳性神经元与生长抑素(SST)阳性神经元胞外腺苷释放的动态变化情况。方法在C57小鼠(n... 目的探究在七氟醚麻醉致意识消失与恢复过程中内侧前额叶皮层(mPFC)中谷氨酸能的锥体(Pyr)神经元与γ-氨基丁酸(GABA)能神经元的两种亚型:小清蛋白(PV)阳性神经元与生长抑素(SST)阳性神经元胞外腺苷释放的动态变化情况。方法在C57小鼠(n=6)mPFC脑区注射AAV-CaMkⅡα-Cre与AAV-DIO-Ado1.0混合病毒,SST-IRES-Cre小鼠(n=6)与PV-IRES-Cre小鼠(n=6)mPFC脑区注射AAV-DIO-Ado1.0病毒,待病毒转染3周。在本实验中主要使用多通道光纤记录系统记录腺苷的荧光信号强度。记录给予2.3%七氟醚麻醉时小鼠从清醒到翻正反射消失,以及翻正反射恢复到完全苏醒过程中腺苷的动态变化情况。结果七氟醚能够引起mPFC中锥体神经元、SST神经元、PV神经元胞外腺苷的增加,并随着七氟醚的停止吸入未立即下降。结论mPFC脑区可能通过调控腺苷传递参与七氟醚麻醉致意识的改变。 展开更多
关键词 内侧前额叶皮层 七氟醚 全身麻醉 腺苷
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跑步对CUS抑郁模型小鼠内侧前额叶皮质内PV+中间神经元的影响 被引量:1
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作者 秦露 唐静 +7 位作者 梁芯 綦英强 罗艳敏 肖倩 黄杜娟 周梅 周宇宁 唐勇 《陆军军医大学学报》 CAS CSCD 北大核心 2023年第3期209-218,共10页
目的 探讨跑步对慢性不可预知性(chronic unpredictable stress, CUS)抑郁症模型小鼠抑郁样行为的影响和内侧前额叶皮质(medial prefrontal cortex, mPFC)内GABA能中间神经元、PV+中间神经元和GAD67+/PV+细胞比例的影响。方法 选取4~6... 目的 探讨跑步对慢性不可预知性(chronic unpredictable stress, CUS)抑郁症模型小鼠抑郁样行为的影响和内侧前额叶皮质(medial prefrontal cortex, mPFC)内GABA能中间神经元、PV+中间神经元和GAD67+/PV+细胞比例的影响。方法 选取4~6周龄的雄性C57BL/6小鼠,CUS建模成功后,利用糖水偏好实验结果将其以分层随机法分为对照组、CUS模型对照组和CUS模型+跑步组。运用糖水偏好实验、强迫游泳实验和悬尾实验评估各组小鼠的行为学水平。采用qRT-PCR检测小鼠mPFC中GAD1、GAD2、PV和CCK的mRNA表达水平。采用免疫组织化学和现代体视学相结合的方法对小鼠mPFC内GABA能中间神经元和PV+中间神经元数量进行精确三维定量,并分析PV+/GAD67+细胞比例。结果 与CUS模型对照组小鼠相比,CUS模型+跑步组小鼠和对照组的糖水偏好百分比显著增加(P<0.05),强迫游泳不动时间显著降低(P<0.05),悬尾不动时间显著降低(P<0.05);对照组、CUS模型对照组和CUS模型+跑步组小鼠mPFC内GAD1、GAD2和CCK的mRNA表达水平以及GABA能中间神经元数量差异无统计学意义(P> 0.05);CUS模型对照组小鼠mPFC中PV的mRNA表达水平、PV+中间神经元数量和PV+/GAD67+细胞比例均显著低于CUS模型+跑步组和对照组(P<0.05)。结论 跑步可能通过调节PV+中间神经元的数量和基因表达从而发挥抗抑郁效应。 展开更多
关键词 CUS抑郁模型小鼠 跑步 mPFC 体视学 GABA能中间神经元 PV+中间神经元
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外侧下丘脑食欲素能神经元-内侧内嗅皮层神经环路对空间记忆的调控作用
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作者 廖翊翔 郑孜艺 +5 位作者 程晓芳 文茹懿 夏建霞 任栓成 何超 胡志安 《陆军军医大学学报》 CAS CSCD 北大核心 2023年第9期927-935,共9页
目的探究外侧下丘脑(lateral hypothalamus,LH)食欲素(hypocretin,Hcrt)能神经元-内侧内嗅皮层(medial entorhinal cortex,MEC)神经环路对空间记忆的调控作用。方法利用光纤记录技术,观察Hcrt能神经元在空间记忆中的活动模式。通过逆行... 目的探究外侧下丘脑(lateral hypothalamus,LH)食欲素(hypocretin,Hcrt)能神经元-内侧内嗅皮层(medial entorhinal cortex,MEC)神经环路对空间记忆的调控作用。方法利用光纤记录技术,观察Hcrt能神经元在空间记忆中的活动模式。通过逆行神经示踪技术鉴定Hcrt能神经元与MEC浅层神经元的形态学联系特征。利用化学遗传学及光遗传学技术探究LH_(Hcrt)-MEC通路对空间记忆的影响。结果光纤记录实验发现LH的Hcrt能神经元在空间记忆相关行为中高水平激活(P<0.01)。逆行神经示踪实验发现Hcrt能神经元投射至空间记忆相关的MEC,LH投射至MEC的Hcrt能神经元在空间记忆中激活。化学遗传学抑制LH_(Hcrt)-MEC通路明显增加小鼠寻找食物正确空间位置的潜伏期(P<0.05)及小鼠寻得食物过程累计错误次数(P<0.05)。光遗传学激活LH_(Hcrt)-MEC通路显著降低小鼠早期寻找食物正确位置的潜伏期(P<0.05)。结论Hcrt能神经元参与空间记忆,LH投射至MEC浅层的Hcrt能神经元在空间记忆中激活,化学遗传学抑制LH_(Hcrt)-MEC通路损害空间记忆;光遗传学激活LH_(Hcrt)-MEC通路增强空间记忆。 展开更多
关键词 外侧下丘脑 食欲素 内侧内嗅皮层 空间记忆
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GluN3A基因缺失影响小鼠抑郁样行为及内侧前额叶皮质与海马mRNA转录组的实验研究
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作者 张萌萌 刘文嵚 +6 位作者 陈静 孔祥如 刘灿 曹佳宁 缪鹏 宋鸣睿 修芸 《陆军军医大学学报》 CAS CSCD 北大核心 2023年第15期1641-1650,共10页
目的 探究GluN3A基因缺失参与抑郁样行为的潜在分子机制。方法 纳入成年雄性GluN3A基因敲除(knockout,KO)小鼠14只和同窝出生野生型(wild type,WT)小鼠15只,糖水偏好实验和强迫游泳实验后收集小鼠(每组5只)内侧前额叶皮质(medial prefro... 目的 探究GluN3A基因缺失参与抑郁样行为的潜在分子机制。方法 纳入成年雄性GluN3A基因敲除(knockout,KO)小鼠14只和同窝出生野生型(wild type,WT)小鼠15只,糖水偏好实验和强迫游泳实验后收集小鼠(每组5只)内侧前额叶皮质(medial prefrontal cortex,mPFC)和海马组织进行mRNA转录组测序,以DESeq2软件筛选差异表达基因并选取部分基因以qPCR进行验证,应用clusterProfiler软件对差异基因进行基因本体(Gene Ontology,GO)富集分析,应用string在线数据库和Cytoscape软件进行蛋白互作网络分析。结果 与WT小鼠相比,GluN3A KO小鼠糖水偏好(P<0.05)和糖水消耗量(P<0.05)显著下降,强迫游泳不动时间显著增加(P<0.01);在GluN3A KO小鼠mPFC和海马组织中分别筛选出740个和666个差异基因;GO分析显示,mPFC中下调差异基因显著富集在血管生成、神经前体细胞的增殖等条目,海马中下调差异基因主要富集在突触组装、轴突发育、树突发育、轴突引导、突触膜等条目,mPFC和海马中上调差异基因均主要与胞质核糖体和核糖体亚基有关;蛋白互作网络分析显示mPFC和海马中核心基因大部分为核糖体蛋白基因。结论 GluN3A基因缺失可能通过调控血管生成、神经前体细胞增殖、突触形成及蛋白合成等途径参与抑郁样行为的发生。 展开更多
关键词 GluN3A 抑郁 转录组学 内侧前额叶皮质 海马
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