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排序方式: 共有190条查询结果,搜索用时 15 毫秒
31.
过度训练对机体刺激-应答反应具有强烈刺激作用,长时间、大强度的训练会导致肠道屏障功能受损,发生运动性胃肠综合征。植物多糖作为一种天然有机化合物具有免疫调节、抗肿瘤、抗衰老、抗氧化等多种生物活性。本文主要阐述过度训练对机体肠黏膜屏障的影响以及复合植物多糖干预对机体肠黏膜的保护作用。 相似文献
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目的 :为探讨C -erbB - 2蛋白在胃癌、大肠癌和乳腺癌中表达的异同和意义。方法 :取胃癌 114例、大肠癌 10 4例和乳腺癌 10 6例 ,石蜡切片 ,SP免疫组织化学染色。结果 :C-erbB - 2在胃癌、大肠癌和乳腺癌中的阳性率分别为 71.9%、5 7.7%和 5 4 .7%。C -erbB - 2在胃癌和大肠癌中的表达与患者年龄有关 ;C -erbB - 2表达与大肠癌分化程度及乳癌恶性程度有关。结论 :C -erbB - 2高表达是大肠癌、乳癌恶性度高 ,预后不良的指标 相似文献
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目的:研究热休克蛋白27(Heat Shock Protein27)在乳腺癌中的表达.方法:采用免疫组化方法检测48例乳腺癌组织中的HSP27.结果:HSP27在乳腺癌中阳性表达率为54.17%(26/48).在非浸润性癌和浸润性癌中阳性表达率为75.00%(3/4)和52.27%(23/44).HSP27阳性表达在非浸润性癌和浸润性癌中无明显差别(P>0.05).HSP27阳性表达与有无淋巴结转移无关(P>0.05).结论:在乳腺癌中HSP27有较高表达,检测乳腺癌中HSP27对化疗有指导作用. 相似文献
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Objective: To investigate the in-vitro antitumor immune responses of dendritoma formed by mouse hepatocellular carcinoma (HCC) cells and lymphotactin (Lptn) gene modified dendritic cells (DCs). Method: DCs prepared from mouse bone marrow were genetically modified by lymphotactin adenovirus, and fused with H22 cells by polyethylene glycol (PEG). RT-PCR and ELISA were employed to identify lymphotactin expression at mRNA and protein level. Cell phenotypes and fusion efficiency was detected by FACS. The stimulatory effect of DC on T cells was detected by mixed lymphocyte reaction. The cytotoxicity activity against H22 cells was assayed by LDH method. Results: Lymphotactin could be efficiently expressed by DCLptn/H22 hybridoma. DCLptn/H22 cells could induce potent T cell proliferation effect and generate strong cytotoxic T lymphocyte (CTL) reaction against allogenic H22 cells. Conclusion: Lymphotactin genetic modification could enhance the in vitro immune activity of the dendritoma. 相似文献
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冯爱娟 《广东轻工职业技术学院学报》2014,(1):11-14
马雌酚是大豆异黄酮的代谢终产物之一,在动物及人体内发挥很强的生物活性。动物或人的个体间利用马雌酚的能力存在很大差异,主要是由于不同个体肠道内菌群存在着差异。本文综述了马雌酚的主要生物活性及人体和动物肠道中存在的与马雌酚产生有关的细菌的研究进展。 相似文献
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文中利用扫描电镜技术对鸭绿江茴鱼肠道粘膜进行观察和研究,结果表明前肠皱褶是沿着肠管方向呈波浪状,中肠则表现为锯齿状,后肠的皱褶则呈现为无序的瘤状;中、后肠微绒毛多且呈明显的簇状;杯状细胞从前肠到后肠数量明显增多. 相似文献
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Krishnan Gokuladhas Subramaniyan Jayakumar Balan Rajan Ramasamy Elamaran Chengalvarayan Subramani Pramila Mani Gopikrishnan Sasivarman Tamilarasi Thiruvengadam Devaki 《Indian journal of clinical biochemistry : IJCB》2016,31(2):171-184
Liver cancer is the fifth most common cancer and is still one of the leading causes of death world wide, due to food additives, alcohol, fungal toxins, air, toxic industrial chemicals, and water pollutants. Chemopreventive drugs play a potential role in liver cancer treatment. Obviously in the production of anticancer drugs, the factors like poor solubility, bioavailability, biocompatibility, limited chemical stability, large amount of dose etc., plays a major role. Against this backdrop, the idea of designing the chemopreventive nature of bio flavanoid hesperetin (HP) drug conjugated with pegylated gold nanoparticles to increasing the solubility, improve bioavailability and enhance the targeting capabilities of the drug during diethylnitrosamine (DEN) induced liver cancer in male wistar albino rats. The dose fixation studies and the toxicity of pure HP and HP conjugated gold nanoparticles (Au-mPEG(5000)-S-HP) were analysed. After concluded the dose fixation and toxicity studies the experimental design were segregated in six groups for the anticancer analysis of DEN induced HCC for 16 weeks. After the experimental period the body weight, relative liver weight, number of nodules and size of nodules, the levels of tumor markers like CEA, AFP and the level of lipid peroxidation, lipid hydroperoxides and the activities of antioxidant enzymes were assessed. The administration of DEN to rats resulted in increased relative liver weight and serum marker enzymes aspartate transaminase, alanine transaminase, alkaline phosphatase, lactate dehydrogenase, and gamma glutamyl transpeptidase. The levels of lipid peroxides elevated (in both serum and tissue) with subsequent decrease in the final body weight and tissue antioxidants like superoxide dismutase, catalase, reduced glutathione, glutathione peroxidise, and glutathione reductase. HP supplementation (20 mg/kg b.wt) significantly attenuated these alterations, thereby showing potent anticancer effect in liver cancer and the HP loaded gold nanoparticels (Au-mPEG(5000)-S-HP) treated animals shows the better treatment than the pure HP due to the solubility of drug, bioavailability and the target drug delivery of the biodegradable polymer. Histological observations were also carried out, which added supports to the chemopreventive action of the pure HP and HP loaded gold nanoparticles (Au-mPEG(5000)-S-HP) against DEN induction during liver cancer progression. These findings suggest that HP loaded gold nanoparticels (Au-mPEG(5000)-S-HP) shows better efficacy than the pure HP against lipid peroxidation, hepatic cell damage and protects the antioxidant system in DEN induced hepatocellular carcinogenesis. 相似文献
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Zhuo REN Yun-ping ZHANG Hui-xia YANG Li-rong ZHU 《Journal of Zhejiang University. Science. B》2009,10(8)
Primary fallopian tube carcinoma (PFTC) is a rare malignant carcinoma among all genital tract malignancies. It occurs most commonly in postmenopausal women and is similar to ovarian malignancy historically and clinically. Because of its insidious onset and silent course, the diagnosis is made usually postoperatively. Liquid-based cytology (LBC) is a type of method for cervical cancer screening, but sometimes it may aid in making PFTC diagnosis. We report a 47-year-old woman with PFTC, whose diagnosis was made with the aid of LBC. 相似文献