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目的:探讨自拟平肝定悸方对慢性应激心律失常模型大鼠血清神经肽Y、谷胱甘肽和谷胱甘肽硫基转移酶的影响。方法:将48只SD大鼠随机分为A、B、C、D四组。A组设为空白对照组,参考空瓶刺激及Cronli方法建立后三组大鼠慢性应激心律失常模型。在造模24 h后,C组予自拟平肝定悸方(100 mg/kg)灌胃,D组给予酒石酸美托洛尔片(0.1 mg/kg)灌胃,药物干预14天后取血,应用ELISA法检测血清中神经肽Y(NPY)、谷胱甘肽(GSH)和谷胱甘肽硫基转移酶(GST)的含量。结果与结论:大鼠B组血清NPY含量明显增加(P<0.05),GSH及GST含量减少(P<0.05)。C组及D组大鼠血清中NPY含量降低(P<0.05),C组与D组比较差异明显(P<0.05);C组GSH及GST含量明显增加(P<0.05),D组无差异(P>0.05)。由此可见,长期慢性应激刺激诱发的心律失常,启动机体应激保护机制,使交感神经兴奋性提高,并且可降低机体抗氧化防御功能。自拟平肝定悸方可缓解焦虑、抗慢性应激心律失常,提高机体抗氧化防御能力、抑制氧化损伤。 相似文献
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谷胱甘肽S转移酶(GST)是一个具有多种功能的Ⅱ相代谢酶家族,在人体肿瘤中活性及数星不一,根据氨基酸顺序的同源性、酶底物的特异性及抗原性,将细胞浆中的GST8分为GSTα、GSTμ、GSTπ、GSTθ、GSTσ5种,每种之间又可根据个别氨基酸的微小差别分为不同亚型,如GSTPI、GSTM1、GSTM4等。细胞质GST均以二聚体形式存在, 相似文献
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目的 建立一种测定1-氯-2,4-二硝基苯(CDNB)高效液相色谱分析方法,并以1-氯-2,4-二硝基苯为探针测定大鼠肝微粒体中谷胱甘肽硫转移酶(GST)活性并进行体外动力学分析。方法 色谱条件:Welch Materials UltimateTM XB C18反相柱(4.6 mm×250 mm,5 μm),流动相:乙腈-水(7∶3),流速0.8 mL·min-1,柱温30 ℃,检测波长238 nm。实验方法:1-氯-2,4-二硝基苯与大鼠肝微粒体在37 ℃温孵7 min后,冰乙腈终止反应。反应液离心取上清液过滤后进行HPLC分析,通过Sigma Plot 软件作图求算Vmax、Km及代谢清除率(CLint)值。结果 1-氯-2,4-二硝基苯的Rt=6.0 min,峰形良好,且无内源性干扰。最低检测限为1.0 μmol·L-1,线性范围:2.5~100.0 μmol·L-1。日内、日间精密度均小于10%。5 d内于室温及-20 ℃下较稳定。方法回收率为99.38%~108%。动力学分析表明,不同浓度1-氯-2,4-二硝基苯在0.02 mg·mL-1蛋白浓度下孵育7 min,测得动力学参数:Vmax为85.45 nmol·min-1·(mg protein)-1;Km为15.09 μmol·L-1; CLlint为5.66 mL·min-1·(mg protein)-1。结论 该方法稳定可靠,灵敏度高,能准确快速测定谷胱甘肽硫转移酶活性,可用于其体外动力学研究。 相似文献
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抗氧化和氧化应激可诱导某些种类解毒酶的表达,上调这些酶可对药物代谢和细胞防御系统产生作用。姜黄素具抗氧化和抗肿瘤作用,因此研究了其对药物代谢酶谷胱甘肽-S-转移酶P1(GSTP1)的调节作用。以20μmol/L姜黄素处理人肝细胞瘤HepG2细胞8 h,采用RT-PCR法检测GSTP1的表达。结果显 相似文献
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目的观察芪竹方联合FOLFOX4方案治疗一线化疗失败的晚期胃癌患者的有效性及安全性。方法将44例一线化疗失败的晚期胃癌患者随机分为治疗组和对照组各22例。治疗组给予芪竹方口服,每日1剂,同时联合FOLFOX4方案化疗;对照组单纯给予FOLFOX4方案化疗。治疗直至病情进展,或出现不能耐受的毒性,或患者拒绝接受化疗。比较两组患者临床证候改善情况、生存质量、肿瘤反应情况、无进展生存期(PFS)、总生存期(OS)、不良反应以及P-糖蛋白(Pg-p)、谷胱甘肽S-转移酶(GST-π)、拓扑异构酶Ⅱ(Topo-Ⅱ)表达情况。结果治疗组临床证候改善情况、PFS、OS均明显优于对照组(P<0.05或P<0.01)。治疗组治疗后Pg-p、GST-π、Topo-Ⅱ的表达例数均无明显变化(P>0.05);对照组治疗后Pgp、Topo-Ⅱ无明显变化(P>0.05),但GST-π表达例数明显高于治疗前(P<0.05)。结论芪竹方联合FOLFOX4治疗一线化疗失败的晚期胃癌有增效减毒作用,稳定GST-π的表达可能为其增效原因之一。 相似文献
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Glutathione S-transferases and malondialdehyde in the liver of NOD mice on short-term treatment with plant mixture extract P-9801091 总被引:2,自引:0,他引:2
Petlevski R Hadzija M Slijepcević M Juretić D Petrik J 《Phytotherapy research : PTR》2003,17(4):311-314
Changes in the concentration of glutathione S-transferases (GSTs) and malondialdehyde (MDA) were assessed in the liver of normal and diabetic NOD mice with and without treatment with the plant extract P-9801091. The plant extract P-9801091 is an antihyperglycaemic preparation containing Myrtilli folium (Vaccinium myrtillus L.), Taraxaci radix (Taraxacum of fi cinale Web.), Cichorii radix (Cichorium intybus L.), Juniperi fructus (Juniperus communis L.), Centaurii herba (Centaurium umbellatum Gilib.), Phaseoli pericarpium (Phaseolus vulgaris L.), Millefoliiherba (Achillea millefolium L.), Mori folium (Morus nigra L.), Valerianae radix (Valeriana of ficinalis L.) and Urticae herba et radix (Urtica dioica L). Hyperglycaemia in diabetes mellitus is responsible for the development of oxidative stress (via glucose auto-oxidation and protein glycation), which is characterized by increased lipid peroxide production (MDA is a lipid peroxidation end product) and/or decreased antioxidative defence (GST in the liver is predominantly an alpha enzyme, which has antioxidative activity). The catalytic concentration of GSTs in the liver was significantly reduced in diabetic NOD mice compared with normal NOD mice (p < 0.01), while the concentration of MDA showed a rising tendency (not significant). The results showed that statistically significant changes in antioxidative defence occurred in the experimental model of short-term diabetes mellitus. A 7-day treatment with P-9801091 plant extract at a dose of 20 mg/kg body mass led to a significant increase in the catalytic concentration of GSTs in the liver of diabetic NOD mice (p < 0.01) and a decrease in MDA concentration (not significant), which could be explained by its antihyperglycaemic effect. 相似文献
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Immunoprotection by botanical drugs in cancer chemotherapy 总被引:6,自引:0,他引:6
Most of the synthetic chemotherapeutic agents available today are immunosuppressants, cytotoxic, and exert variety of side effects that are particularly evident in cancer chemotherapy. Botanical based immunomodulators are often employed as supportive or adjuvant therapy to overcome the undesired effects of cytotoxic chemotherapeutic agents and to restore normal health. Total extract, polar and non-polar extracts, and their formulations, prepared from medicinal plants mentioned in Ayurveda, namely, Withania somnifera (Linn Dunal) (Solanaceae), Tinospora cordifolia (Miers) (Menispermaceae), and Asparagus racemosus (Willd.) (Liliaceae), exhibited various immunopharmacological activities in cyclophosphamide (CP)-treated mouse ascitic sarcoma. Treatment of ascitic sarcoma-bearing mice with a formulation of total extracts of Withania somnifera and Tinospora cordifolia (80:20) and alkaloid-free polar fraction of Withania somnifera resulted in protection towards CP-induced myelo- and immunoprotection as evident by significant increase in white cell counts and hemagglutinating and hemolytic antibody titers. Treatment with these candidate drugs will be important in development of supportive treatment with cancer chemotherapy. 相似文献
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对142例肺癌化疗患者从生理、心理、环境等方面提供舒适护理,结果增强了患者与护士之间的亲密关系,为患者顺利进行化疗提供了保障. 相似文献
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A 54 years old male patient, 5 months ago, cough and expectoration were induced by lung cancer and hiccups were triggered and lasted for 1 day after radiochemotherapy. Firstly, the sensitized points were detected in the region of BL 17. The disposable subcutaneous trocar acupuncture needle was inserted transversely. Afterward, the Zúsānl? (足三里 ST 36) was injected by metoclopramide injection, one mL each point, then catgut embedding was carried at ST36. Comprehensive therapy was used, satisfactory effects can be achieved in the treatment of Hiccup after chemotherapy. 相似文献
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王志勤 《现代中西医结合杂志》2009,18(15)
目的探讨不同新辅助化疗对可手术乳腺癌治疗的作用及与生物学指标的关系。方法选择88例新辅助化疗的乳腺癌患者,治疗前对原发灶用TSK stericut针穿刺活检,并用免疫组化法检测ER、PR,联酶免疫法检测血清HER-2,所有患者采用CAF方案或TAC方案,疗程为4~6个周期,化疗后1~2周手术。结果TAC方案总有效率(88%)高于CAF方案(66%)(P<0.05),HER-2阳性者的有效率(85%)较阴性者(63%)高(P<0.05),ER/PR阳性有效率(85%/88%)较阴性者(63%/62%)高(P<0.05)。多因素分析显示,TAC方案、HER-2阳性独立地与新辅助化疗有效率相关。结论新辅助化疗在乳腺癌综合治疗中有重要的作用。TAC方案、HER-2阳性、ER/PR阳性者具有较高的缓解率。活检针穿刺可用于乳腺癌的术前病理诊断并测定生物学指标,联酶免疫法检测血清HER-2可能是一种较好的预测乳腺癌预后的生物学指标之一,紫杉醇对HER-2阳性患者有较好的效果。 相似文献