کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2011532 1067009 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chronic impairment of the vagus nerve function leads to inhibition of dopamine but not serotonin neurons in rat brain structures
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Chronic impairment of the vagus nerve function leads to inhibition of dopamine but not serotonin neurons in rat brain structures
چکیده انگلیسی

BackgroundRecent clinical studies have shown that the dorsal motor nucleus of the vagus nerve is one of the brain areas that are the earliest affected by α-synuclein and Lewy body pathology in Parkinson's disease. This observation raises the question: how the vagus nerve dysfunction affects the dopamine system in the brain?MethodsThe rats underwent surgical implantation of the microchip (MC) in the abdominal region of the vagus. In this study, we examined the effect of chronic, unilateral electrical stimulation of the left nerve vagus, of two different types: low-frequency (MCL) and physiological stimulation (MCPh) on the dopamine and serotonin metabolism determined by high-pressure chromatography with electrochemical detection in rat brain structures.ResultsMCL electrical stimulation of the left nerve vagus in contrast to MCPh stimulation, produced a significant inhibition of dopamine system in rat brain structures. Ex vivo biochemical experiments clearly suggest that MCL opposite to MCPh impaired the function of dopamine system similarly to vagotomy.ConclusionWe suggest a close relationship between the peripheral vagus nerve impairment and the inhibition of dopamine system in the brain structures. This is the first report of such relationship which may suggest that mental changes (pro-depressive) could occur in the first stage of Parkinson's disease far ahead of motor impairment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pharmacological Reports - Volume 64, Issue 6, November–December 2012, Pages 1359–1367
نویسندگان
, , , , , , , ,