检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:周冬枝[1] 刘文[1] 夏欣欣[1] 李跃军[1] 王瑞[1] 王玉[1]
机构地区:[1]西安交通大学医学院第一附属医院中医科,西安710061
出 处:《第二军医大学学报》2012年第2期208-211,共4页Academic Journal of Second Military Medical University
基 金:陕西省中医药管理局基金(JC33)~~
摘 要:目的探讨二七方对急性放射性肠炎的疗效及可能的作用机制。方法 SD大鼠53只,随机分为正常组(n=8)、模型组(n=15)、白头翁汤组(n=15)及二七方组(n=15)。采用6 MV高能X线建立急性放射性肠炎大鼠模型,连续灌胃给药7 d,光学显微镜下观察及图像分析仪测定其相关的形态学指标,并测定小肠组织匀浆NO含量、SOD活性及MDA含量。结果二七方组大鼠肠组织绒毛高度[(243±9)vs(211±21)μm]、隐窝深度[(171±12)vs(142±10)μm]、黏膜[(460±21)vs(420±37)μm]及全层壁厚度[(609±19)vs(569±21)μm]均高于模型组(P<0.05),与白头翁汤组比较差异无统计学意义;二七方组大鼠肠组织匀浆NO[(0.88±0.11)vs(1.65±0.12)μmol/g]及MDA含量[(3.20±0.12)vs(4.75±0.24)nmol/mg]与模型组比较均降低(P<0.05),SOD活性升高[(212±13)vs(150±11)U/mg,P<0.05],与白头翁汤组比较差异有统计学意义(P<0.05)。结论二七方对肠黏膜结构具有保护作用,能减少肠组织NO生成、减轻炎症反应及组织过氧化损伤,抗自由基损伤可能是其治疗急性放射性肠炎的机制之一。Objective To investigate the therapeutic effects of Erqi decoction(EQD) for treatment of acute radiation enteritis in SD rats and the related mechanism.Methods A total of 53 SD rats were randomly divided into normal group model group,EQD group and Baitouwengtang(BTWT) group,with 8 rats in the normal control group and 15 in each of the rest groups.Rats in the latter three groups were exposed to a single dose of 10 Gy 6 MV higher-energy X-rays on the abdominal region to establish the acute radiation enteritis models.Then all the rats were intragastrically administered with corresponding agents for a consecutive of 7 days.Then 10 ml ileum samples in ileocecal junction were obtained from each animal under general anesthesia.The morphologic indices were examined by light microscopy and the image analysis system.The nitric oxide(NO) levels,superoxide dismutase(SOD) activities and malondialdehyde(MDA) levels in the small intestinal homogenates were measured by spectrophotometer.Results The EQD group had significantly higher villus height(243±9 vs 211±21 μm),deeper crypt(171±12 vs 142±10 μm),thicker mucosa(460±21 vs 420±37 μm) and entire wall thickness(609±19 vs 569±21 μm) than the model group(P0.05),and the above parameters were not significantly different between the EQD group and the BTWT group.EQ group had significantly lower NO level(0.88±0.11 vs 1.65±0.12 μmol/g),higher MDA level(3.20±0.12 vs 4.75±0.24 nmol/mg) and lower SOD activity(212±13 vs 150±11 U/mg,P0.05) in the intestine compared with the model group(P0.05).EQD group had significantly lower NO and MDA levels and higher SOD activity compared with the BTWT group(P0.05).Conclusion It is indicated that EQD has protective effect against intestine mucosa damage in acute radiation enteritis rat model by reducing the intestinal NO generation,improving intestinal SOD activity,reducing MDA generation.Anti-free radical injury may be one of the mechanisms for treatment of acute radiation ent
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.200