目的观察组织型纤溶酶原激活剂阿替普酶对脑卒中后抑郁(PSD)大鼠海马脑源性神经营养因子前体(proBDNF)及其高亲和力受体P75、Sortilin表达变化影响。方法选择健康成年雌性SD大鼠55只,其中40只随机分为正常组、抑郁组、脑卒中组及PSD组,...目的观察组织型纤溶酶原激活剂阿替普酶对脑卒中后抑郁(PSD)大鼠海马脑源性神经营养因子前体(proBDNF)及其高亲和力受体P75、Sortilin表达变化影响。方法选择健康成年雌性SD大鼠55只,其中40只随机分为正常组、抑郁组、脑卒中组及PSD组,每组10只;15只随机分为生理盐水组、阿替普酶组、proBDNF组,每组5只。术后每周评估各组大鼠体质量,开展蔗糖水偏好实验及旷场实验进行抑郁行为学评分。造模第4周及第8周检测各组大鼠海马proBNDF及其受体P75、Sortilin表达。结果与正常组和脑卒中组比较,抑郁组和PSD组大鼠第4周及第8周体质量、蔗糖偏好率、水平运动及垂直运动距离的次数明显减少(P<0.05)。与生理盐水组比较,阿替普酶组大鼠体质量、蔗糖偏好率、水平运动及垂直运动距离的次数明显升高,proBDNF组大鼠体质量、蔗糖偏好率、水平运动及垂直运动距离的次数明显减少(P<0.05)。PSD组大鼠第4周海马proBDNF表达较正常组、脑卒中组和抑郁组明显升高,P75、Sortilin表达较正常组、脑卒中组明显升高(P<0.05);PSD组大鼠第8周海马proBDNF表达较正常组和抑郁组明显升高,较脑卒中组明显降低,P75、Sortilin表达较正常组、脑卒中组和抑郁组明显升高(P<0.05)。与生理盐水组比较,阿替普酶组大鼠海马proBDNF、P75、Sortilin表达明显降低,proBDNF组P75表达明显降低,Sortilin表达明显升高(P<0.05);与阿替普酶组比较,proBDNF组大鼠海马proBDNF、P75、Sortilin表达明显升高(0.34±0.01 vs 0.21±0.03、0.37±0.01 vs 0.21±0.04、0.37±0.02 vs 0.19±0.04,P<0.05)。结论阿替普酶可能通过降低PSD大鼠海马proBDNF、P75、Sortilin表达,起到改善PSD的重要作用。展开更多
Investigating the pathophysiological mechanisms underlying brain disorders is a priority if novel therapeutic strategies are to be developed. In vivo studies of animal models and in vitro studies of cell lines/primary...Investigating the pathophysiological mechanisms underlying brain disorders is a priority if novel therapeutic strategies are to be developed. In vivo studies of animal models and in vitro studies of cell lines/primary cell cultures may provide useful tools to study certain aspects of brain disorders. However, discrepancies among these studies or unsuccessful translation from animal/cell studies to human/clinical studies often occur, because these models generally represent only some symptoms of a neuropsychiatric disorder rather than the complete disorder. Human brain slice cultures from postmortem tissue or resected tissue from operations have shown that, in vitro, neurons and glia can stay alive for long periods of time, while their morphological and physiological characteristics, and their ability to respond to experimental manipulations are maintained. Human brain slices can thus provide a close representation of neuronal networks in vivo, be a valuable tool for investigation of the basis of neuropsychiatric disorders, and provide a platform for the evaluation of novel pharmacological treatments of human brain diseases.A brain bank needs to provide the necessary infrastructure to bring together donors, hospitals, and researchers who want to investigate human brain slices in cultures of clinically and neuropathologically well-documented material.展开更多
文摘目的观察组织型纤溶酶原激活剂阿替普酶对脑卒中后抑郁(PSD)大鼠海马脑源性神经营养因子前体(proBDNF)及其高亲和力受体P75、Sortilin表达变化影响。方法选择健康成年雌性SD大鼠55只,其中40只随机分为正常组、抑郁组、脑卒中组及PSD组,每组10只;15只随机分为生理盐水组、阿替普酶组、proBDNF组,每组5只。术后每周评估各组大鼠体质量,开展蔗糖水偏好实验及旷场实验进行抑郁行为学评分。造模第4周及第8周检测各组大鼠海马proBNDF及其受体P75、Sortilin表达。结果与正常组和脑卒中组比较,抑郁组和PSD组大鼠第4周及第8周体质量、蔗糖偏好率、水平运动及垂直运动距离的次数明显减少(P<0.05)。与生理盐水组比较,阿替普酶组大鼠体质量、蔗糖偏好率、水平运动及垂直运动距离的次数明显升高,proBDNF组大鼠体质量、蔗糖偏好率、水平运动及垂直运动距离的次数明显减少(P<0.05)。PSD组大鼠第4周海马proBDNF表达较正常组、脑卒中组和抑郁组明显升高,P75、Sortilin表达较正常组、脑卒中组明显升高(P<0.05);PSD组大鼠第8周海马proBDNF表达较正常组和抑郁组明显升高,较脑卒中组明显降低,P75、Sortilin表达较正常组、脑卒中组和抑郁组明显升高(P<0.05)。与生理盐水组比较,阿替普酶组大鼠海马proBDNF、P75、Sortilin表达明显降低,proBDNF组P75表达明显降低,Sortilin表达明显升高(P<0.05);与阿替普酶组比较,proBDNF组大鼠海马proBDNF、P75、Sortilin表达明显升高(0.34±0.01 vs 0.21±0.03、0.37±0.01 vs 0.21±0.04、0.37±0.02 vs 0.19±0.04,P<0.05)。结论阿替普酶可能通过降低PSD大鼠海马proBDNF、P75、Sortilin表达,起到改善PSD的重要作用。
基金supported by the National Natural Science Foundation of China (81501172)the China Exchange Programme of the Royal Netherlands Academy of Arts and Sciences (10CDP0037 and 05CD9027)+3 种基金the Shanghai Municipal Commission of Health and Family Planning (20154Y0016)an Innovation Project of the Chinese Academy of Sciences (KSCX2-SW-217)a National Basic Research Development Program of China (2006CB500705)the Internationale Stichting Alzheimer Onderzoek (05501)
文摘Investigating the pathophysiological mechanisms underlying brain disorders is a priority if novel therapeutic strategies are to be developed. In vivo studies of animal models and in vitro studies of cell lines/primary cell cultures may provide useful tools to study certain aspects of brain disorders. However, discrepancies among these studies or unsuccessful translation from animal/cell studies to human/clinical studies often occur, because these models generally represent only some symptoms of a neuropsychiatric disorder rather than the complete disorder. Human brain slice cultures from postmortem tissue or resected tissue from operations have shown that, in vitro, neurons and glia can stay alive for long periods of time, while their morphological and physiological characteristics, and their ability to respond to experimental manipulations are maintained. Human brain slices can thus provide a close representation of neuronal networks in vivo, be a valuable tool for investigation of the basis of neuropsychiatric disorders, and provide a platform for the evaluation of novel pharmacological treatments of human brain diseases.A brain bank needs to provide the necessary infrastructure to bring together donors, hospitals, and researchers who want to investigate human brain slices in cultures of clinically and neuropathologically well-documented material.