【摘 要】
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Non-motor symptoms are of vital importance in Parkinsons disease in recent years.These symptoms occur far early before the motor dysfunction in PD.However,the mechanisms underlying these non-motor sym
【机 构】
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Department of Physiology,Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurol
【出 处】
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第九届海内外华人神经科学家研讨会(The 9th Symposium for Chinese Neuroscientis
论文部分内容阅读
Non-motor symptoms are of vital importance in Parkinsons disease in recent years.These symptoms occur far early before the motor dysfunction in PD.However,the mechanisms underlying these non-motor symptoms are largely unknown.In rotenone-induced PD rats,there was a gradual reduction in the number of nigral dopaminergic neurons after rotenone treatment.Meanwhile,changed cardiovascular function was observed in the early stages.The loss of catecholaminergic neurons in the rostral ventrolateral medulla emerged earlier than the nigral dopaminergic neurons,neither that of the caudal ventrolateral medulla nor the nucleus tractus solitarii.In PD transgenic mice expressing mutant human alpha-synuclein,loss of cholinergic neurons in the dorsal motor nucleus of the vagus nerve were observed far earlier than that of the dopaminergic neurons and lower plasma ghrelin levels were also observed at this stage.In PD patients at stage Ⅰ-Ⅲ,plasma ghrelin levels were decreased in both genders,and ghrelin suppression and next preprandial peak related to glucose delivery were both attenuated.These suggest that non-motor symptoms occur early because of the impairment of cardiovascular and gastrointestinal center in the brain stem in PD.
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