摘要
目的探讨血管紧张素Ⅱ受体拮抗剂替米沙坦对脑出血急性应激性胃黏膜病变大鼠胃黏膜细胞增殖和凋亡的影响。方法健康成年SD大鼠96只,随机分为假手术组、脑出血组、替米沙坦组,每组32只,各组再分为1、2、3和5d4个时间点,每个时间点8只大鼠。制作脑出血大鼠模型,大体观察胃黏膜病变并计算溃疡指数;HE染色光镜下观察胃黏膜组织形态学改变;免疫组织化学法检测胃黏膜增殖细胞核抗原(PCNA)蛋白的表达;TUNEL检测胃黏膜凋亡细胞。结果与假手术组比较,脑出血组大鼠1、2、3和5d胃黏膜溃疡指数明显增大、PCNA表达明显减少、TUNEL凋亡细胞明显增多(P<0.01)。与脑出血组比较,替米沙坦组大鼠1、2、3和5d胃黏膜溃疡指数明显减小、PCNA表达增多、TUNEL凋亡细胞减少(P<0.05)。结论替米沙坦能够减小脑出血急性应激性胃黏膜病变大鼠胃黏膜溃疡指数、增加PCNA表达、减少TUNEL凋亡细胞,减轻应激性胃黏膜病变。
Objective To study the effect of telmisartan,an Ang Ⅱ receptor blocker,on proliferation and apoptosis of gastric mucosal cells in acute stress gastric lesion rats with intracerebral hemorrhage.Methods Ninety-six healthy adult SD rats were randomly divided into sham operation group,intracerebral hemorrhage group and telmisartan treatment group (32 in each group).Rats in each group were further divided into 1-day group,2-day group,3-day group and 5-day group (8 in each group).A rat intracerebral hemorrhage model was established.Gross gastric mucosal lesion was observed and ulcer index was calculated.Gastric mucosa morphology was observed by optical microscopy with HE staining.Expression of PCNA protein in gastric mucosa was detected with immunohistochemistry staining.Apoptosis of gastric mucosal cells was assayed by TUNEL.Results The gastric mucosa ulcer index was significantly higher while the expression level of PCNA was significantly lower and the number of apoptotic cells was significantly larger in intracerebral hemorrhage group than in sham operation group on days 1,2,3 and 5 (P〈0.01).The lesion was most severe on day 3 and alleviated on day 5.The gastric mucosa ulcer index was significantly lower while the expression level of PCNA was significantly higher and the number of apoptotic cells was significantly smaller in telmisartan treatment group than in intracerebral hemorrhage group on days 1,2,3 and 5 (P〈0.05).Conclusion Telmisartan can reduce the ulcer index,increase the expression of PCNA,decrease the number of apoptotic cells and alleviate the gastric mucosa lesion in acute stress gastric lesion rats with intracerebral hemorrhage.
出处
《中华老年心脑血管病杂志》
CAS
2015年第1期83-86,共4页
Chinese Journal of Geriatric Heart,Brain and Vessel Diseases
基金
辽宁省科学技术计划项目(2012225019)
关键词
脑出血
胃黏膜
细胞凋亡
细胞增殖
cerebral hemorrhage
gastric mucosa
apoptosis
cell proliferation