目的旨在建立血管性抑郁症(vascular depression,VD)的理想动物模型。方法选用SD大鼠40只,采用数字表法随机分为4组:1手术组:双侧颈总动脉结扎(ligation of bilateral common carotid arteries,LBCCA);2假手术组:同手术组处理,但不结扎;3抑郁组:慢性不可预见性温和应激(chronic unpredictable mild stress,CUMS)结合孤养,不进行手术;4模型组:LBCCA叠加CUMS,结合孤养。连续观察21 d,观测大鼠体质量变化、行为学改变、脑血流量变化以及大鼠大脑基质金属蛋白酶(matrix metalloproteinases,MMPs)、脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)、酪氨酸激酶受体B(tropomyosin related kinase B,Trk B)蛋白及其mRNA表达水平的变化。结果与假手术组比较,模型组和抑郁组大鼠体质量、糖水消耗百分率、旷场试验运动距离及站立次数均明显降低(P<0.05或P<0.01),手术组及模型组大鼠脑血流量明显降低...
【英文摘要】
Objective To build the ideal animal model for depression. Methods Forty SD rats were divided randomly into 4groups: 1sham-operated group; 2 operation group: bilateral common carotid artery ligation( LBCCA); 3 depression group: chronic unpredictable mild stress( CUMS) combining with solitary,with no surgery; 4model group: LBCCA + CUMS and solitary. We observe animals continuously for 21 days to detect the variation of weight,behavioristics,cerebral blood flow and expression level of matrix metalloproteinases...