绞股蓝水提物对束缚水浸应激性胃溃疡模型大鼠的预防作用
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篇名: | 绞股蓝水提物对束缚水浸应激性胃溃疡模型大鼠的预防作用 |
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摘要: | 目的:考察绞股蓝水提物对应激性胃溃疡模型大鼠的预防作用。方法:将60只大鼠随机分为正常组、模型组、阳性组(三九胃泰颗粒,3.69 g/kg)和绞股蓝水提物高、中、低剂量组(4.0、2.0、1.0 g/kg,以生药计),每组10只,ig给药,每天1次,连续1周。给药结束2 h后,除正常组外,其余各组大鼠均采用束缚水浸法复制应激性胃溃疡模型。造模3 h后,测定溃疡指数(UI)、溃疡抑制率,测定血清中超氧化物歧化酶(SOD)、丙二醛(MDA)以及胃黏膜组织中肿瘤坏死因子α(TNF-α)、前列腺素E2(PGE2)、一氧化氮(NO)、内皮素1(ET-1)水平。结果:与正常组比较,模型组大鼠血清中SOD水平降低、MDA水平升高(P<0.05),胃黏膜组织中PGE2、NO水平降低,TNF-α、ET-1水平升高(P<0.05);与模型组比较,各给药组大鼠UI明显降低、上述指标均明显改善,且具有一定的剂量依赖性,其中绞股蓝水提物高剂量组大鼠胃黏膜组织中PGE2、ET-1改善较阳性组更明显,差异均有统计学意义(P<0.05)。结论:绞股蓝水提物可通过调控血清SOD-MDA平衡和胃黏膜组织NO- ET-1平衡、减轻胃黏膜损伤程度等方式发挥其预防胃溃疡的作用。 |
ABSTRACT: | OBJECTIVE: To investigate the preventive effect of Gynostemma pentaphyllum water extract on model rats with stress-induced gastric ulcer. METHODS: 60 rats were randomly divided into normal group, model group, positive group (Sanjiu weitai granules, 3.69 g/kg) and G. pentaphyllum water extract high-dose, medium-dose, low-dose groups (4.0, 2.0, 1.0 g/kg, calculated by crude drug), 10 in each group. All rats were intragastrically administrated, once a day, for one week. After 2 h of administration, except for normal group, rats were induced to stress gastric ulcer model by water immersion method in other groups. After 3 h of modeling, ulcer index (UI), ulcer inhibition rate were detected; superoxide dismutase (SOD) and malondialdehyde (MDA) in serum, tumor necrosis factor-α (TNF-α), prostaglandin E2 (PGE2), nitric oxide (NO) and endothelin-1 (ET-1) levels in gastric mucosal tissue were determined. RESULTS: Compared with normal group, SOD level in model group was decreased, while MDA level was increased in serum (P<0.05); PGE2, NO levels were decreased, TNF-α, ET-1 levels were increased in gastric mucosal tissue (P<0.05). Compared with model group, UI in administration groups were obviously decreased, above-mentioned indexes were obviously improved, which showed certain dose-dependence. And the levels of PEG2, ET-1 of gastric mucosal tissue in G. pentaphyllum water extract high-dose group improved more obviously than positive group, with statistical significances (P<0.05). CONCLUSIONS: G. pentaphyllum water extract plays a role in preventing gastric ulcer by regulating serum SOD-MDA balance, gastric mucosal tissue NO-ET-1 balance and reduce the degree of gastric mucosa injury, etc. |
期刊: | 2017年第28卷第13期 |
作者: | 迟栋 |
AUTHORS: | CHI Dong |
关键字: | 绞股蓝水提物;束缚水浸法;应激性胃溃疡;超氧化物歧化酶;丙二醛;大鼠 |
KEYWORDS: | Gynostemma pentaphyllum water extract; Water immersion method; Stress-induced gastric ulcer; Superoxide dismutase; Malondialdehyde; Rats |
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