机构地区:[1]中国医学科学院北京协和医学院北京协和医院急诊科,100730 [2]中国医学科学院北京协和医学院北京协和医院肠内肠外营养科,100730 [3]中日友好医院急诊科,北京100029
出 处:《中华临床营养杂志》2013年第4期218-224,共7页Chinese Journal of Clinical Nutrition
摘 要:目的 探讨促肾上腺激素释放激素(CRH)在脑梗死胃肠屏障破坏中的作用。方法雄性Wistar大鼠40只,按随机数字表法分为假手术组(C组)、脑梗死组(I组)、脑梗死+脑室α-螺旋-CRH(9-41)组(Aic组)、脑梗死+腹腔α-螺旋-CRH(9-41)组(Aip组),每组10只。造模成功后留24 h尿检测尿肾上腺素、去甲肾上腺素、皮质醇含量及蔗糖排出率,造模后24 h检测血浆二胺氧化酶(DAO)活性和D-乳酸浓度;进行胃大体Guth评分,Western-blot法检测下丘脑组织的CRH蛋白表达。结果 各组24 h尿肾上腺素、去甲肾上腺素、24 h皮质醇含量和下丘脑组织的CRH蛋白表达变化趋势一致:与C组比较,I组显著升高[24 h尿肾上腺素(42.28±19.86)比(13.11±7.56)ng(P=0.039),去甲肾上腺素(265.96±82.09) 比 (156.65±60.28) ng (P=0.042),24 h皮质醇含量(239.85±73.85) 比 (106.13±47.47) ng (P=0.006),下丘脑组织的CRH蛋白表达1.36±0.42 比 0.59±0.27(P=0.002)],Aip组亦显著升高[24 h尿肾上腺素(77.89±34.17) 比(13.11±7.56) ng (P=0.009),去甲肾上腺素(380.49±97.00) 比 (156.65±60.28) ng (P=0.007),24 h皮质醇含量(276.13±99.24) 比 (106.13±47.47) ng (P=0.007),下丘脑组织CRH蛋白表达1.18±0.26 比 0.59±0.27 (P=0.003)],Aic组差异无统计学意义;I组显著高于Aic组[24 h尿肾上腺素(42.28±19.86) 比 (17.93±6.25) ng (P=0.036),去甲肾上腺素(265.96±82.09) 比 (160.50±34.88) ng (P=0.038),24 h皮质醇含量(239.85±73.85) 比(127.90±47.17) ng (P=0.005),下丘脑组织CRH蛋白表达1.36±0.42 比 0.82±0.20 (P=0.027)],Aip组也显著高于Aic组[24 h尿肾上腺素(77.89±34.17) 比 (17.93±6.25) ng(P=0.008),去甲肾上腺素(380.49±97.00) 比 (160.50±34.88) ng(P=0.007),24 h皮质醇含量(276.13±99.24) 比 (127.90±47.17�Objective o investigate the central and peripheral roles of corticotrophin-releasing hormone (CRH) in cerebral infarction-related gastrointestinal barrier dysfunction. Methods Forty male Wistar rats were randomized by random number table and divided into pseudo-operation group (group C), cerebral infarction group (group I), cerebral infarction + intracerebroventricular CRH blocker group(group Aic), and cerebral infarction +intraperitoneal CRH blocker group (group Aip). Urine samples were collected to determine the levels of epinephrine, norepinephrine, cortisol, and sucrose. At 24 hours after establishment of the models, blood samples were taken to determine the activity of diamine oxidase (DAO) and the concentration of D-lactic acid (D-lac). The stomach was taken to determine gastric Guth score, and the hypothalamus was also taken to determine tissue CRH protein expression using Western blot.Results The change of urinary cortisol and catecholamine were nearly the same with the hypothalamus CRH protein: group I were significant higher than group C[urinary epinephrine (42.28±19.86)ng vs (13.11±7.56)ng (P=0.039), urinary norepinephrine (265.96±82.09)ng vs (156.65±60.28)ng (P=0.042), urinary cortisol (239.85±73.85)ng vs (106.13±47.47)ng (P=0.006), hypothalamus CRH protein 1.36±0.42 vs 0.59±0.27 ng(P=0.002)];group Aip was also significant higher than group C[urinary epinephrine (77.89±34.17)ng vs (13.11±7.56)ng (P=0.009), urinary norepinephrine (380.49±97.00)ng vs (156.65±60.28)ng (P=0.007), urinary cortisol (276.13±99.24)ng vs (106.13±47.47)ng (P=0.007), hypothalamus CRH protein 1.18±0.26 vs 0.59±0.27(P=0.003)]. The parameters were not significantly different between group Aic and group C, whereas those in group I were significantly higher than in group Aic [urinary epinephrine (42.28±19.86)ng vs (17.93±6.25)ng (P=0.036), urinary norepinephrine (265.96±82.09)ng vs (16
关 键 词:应激 促.肾上腺激素释放激素 脑梗死 胃肠屏障
分 类 号:R743.3[医药卫生—神经病学与精神病学]
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