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蓝靛果提取物抗溃疡活性部位筛选及药理探讨
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摘要
目的:研究蓝靛果提取物抗实验性胃溃疡的有效活性部位、及其药理作用和机理探讨
     方法:本课题采用无水乙醇实验性胃溃疡模型、利血平实验性胃溃疡模型对蓝靛果的总提取物、正丁醇萃取物、乙酸乙酯萃取物、萃取物后剩余物进行筛选。并对其中的有效部位乙酸乙酯萃取物进一步做了乙酸型实验性胃溃疡模型、利血平实验性胃溃疡模型、消炎痛实验性胃溃疡模型、无水乙醇实验性胃溃疡模型的药理研究。并测量了血清及胃粘膜中NO、MDA含量,及测定了SOD的活性,检测了血清中胃幽门螺旋杆菌抗体的含量。观察了蓝靛果乙酸乙酯萃取物(EELC)对胃溃疡的防治作用,而且对其抗溃疡机理进行了探讨。
     实验结果:
     蓝靛果乙酸乙酯萃取物能明显促进乙酸型实验性胃溃疡的愈合。其2g/kg、4g/kg两个剂量组的溃疡指数与常水对照组相比有明显的差异(p<0.05、p<0.01)。溃疡抑制率为53.6%和84.2%。但与西咪替丁阳性对照组相比无明显差异。
     蓝靛果乙酸乙酯萃取物(1g/kg、2g/kg、4g/kg)三个剂量组能明显减轻无水乙醇所致的小鼠胃粘膜损伤,与常水对照组相比有显著性差异(p<0.05、p<0.01、p<0.01)。其溃疡抑制率分别为49.05%、58.49%、67.92%。但与西咪替丁阳性对照组相比无明显差异。
     蓝靛果乙酸乙酯萃取物(1g/kg、2g/k、4g/kg)三个剂量组能明显减轻消炎痛所致的实验性胃溃疡胃粘膜损伤。与常水对照组相比有明显的差异(p<0.05、p<0.01、p<0.01),其溃疡抑制率为24.4%、35.6%、64.4%。与西咪替丁阳性对照组相比无明显差异。
     蓝靛果乙酸乙酯萃取物(1g/kg、2g/kg、4g/kg)三个剂量组能对抗小鼠利血平所致的胃粘膜损伤。与常水对照组相比有明显差异(p<0.05、p<0.01、
OBJECTTVE:In order to filt effectual portion extraction of Lonicera caerulea L Var edulis turcz Ex Herd(LC) on experimental gastric ulcer in rats and investigate the preventive and curative action of Ethyl acetate extraction of Lonicera Caerulea L Var edulis Turcz Ex herd(EELC) on experimental gastric ulcer in rats. METHOD:The lonicera caeruler L Var edulis turcz ex Herd(LC)was batch extracted using the grain alcohol ethyl acetate and n-butanol the preventive and curative action of grain alcohol extraction of LC,ethyl acetate extraction of LC,n-batanol extraction of Lc,remainders on two kinds of gastric ulcer models including reserpine and grain alcohol induced ulcers were investigated.EELC on four kinds of gastric ulcer models including acetic acid, reserpine , indomethacin and 100%EtoH induced gastric ulcer was observed.Some biochemical parameters were measured,such as the amount of antibody of gastric pylorus twist bacilli in serum. The SOD activity and MDA, NO amount of serum and gastric mucosal in rats of acetic induced gastric ulcer models were measured.RESULT:Ethyl acetate extraction of lonicera Caerulea L var edulis turcz Ex herd (EELC) could markedly stimulate the healing of acetic acid induced gastric ulcer.The two dose groups (2g/kg, 4g/kg)were all significal different from that of control group
    (p<0.05 ^ p<0.01) and the gastric ulcer rates of inhibition were 53.6% and 84.2respectively,but had no significantly differently from the Cimetidine group(2g/kg).EELC could markedly reduce the gastric ulcer of grain alcohol induced (p<0.05^ p<0.0k p<0.01).The gastric ulcer rates of inhibition of the three dose group(lg/kg, 2g/kg^ 4g/kg)were49.05%,58.49% and 67.92%.Its were all significantly different from that of control group (p<0.05^p<0.0kp<0.01), but had no significantly differently from the cimetidine group (2g/kg).EELC (lg/kg^2g/kg^4g/kg) could inhibit the formation of indomethacin induced gastric ulcer (p<0.05^ p<0.01 ^ p<0.01).The gastric ulcer rates of inhibition of three dose groups were 24.4%^ 35.6% and 64.4%(p<0.05 N p<0.01 ^ p<0.01) ,and its were significantly differently from the control group,but had no significantly from the cimetidine group (0.2g/kg).EELC (lg/kg ? 2g/kg) could inhibit reserpine induced the gastric ulcer ,and were significantly from that of control group(p<0.01 ^ p<0.01).the gastric ulcer rates of inhibition of the two dose groups were 40.7% and 61.1% ., 79.6%, but had no significantly differently from the cimetidine group (2g/kg).EE1C could significal reduce the amount of antibody of gastric pylorus twist bacilli (p<0.05^ p<0.01).Its were all significantly different from that of the control group.(p<0.05^ p<0.01).Its had differently from cimetidine control (2g/kg).EELC (4g/kg) markedly increased the activity of SOD in gastric ulcer juicejt was significantly differently from that of the control group (p<0.05),but it little dose (2g/kg) had no effect on SOD activity in gastric mucosal juice .EELC had no effect on SOD activity in serum.EELC had no effect on the MDA amount of serum and mucosal juice .EELC had no effect on the NO content of serum and gastric mucosal juice. CONCLUSIONrEELC is the effectual portion of LC in the using of preventive and curative action on experiment gastric ulcer in rats.The results indicate that the EELC had preventive and curative effect against chronic and some acute gastric ulcer .Its mechanisms of the anti-ulcer action maybe associated with its ability to enhance the gastric mucosal defending,weaken the attacking factors and accelerate the
    regeneration and repair of injured mucosal by means of improving the mucosal blood circulation resisting the free radicals > inhibiting the lipid peroxidation ^ stimulating the synthesis of DNA> RNA and protein > inhibiting the reproducer of bacillus.
引文
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