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蝮蛇抗栓酶对血栓形成的影响杨天义南京铁道医学院210009蝮蛇抗栓酶(SnakeVenomAnti-throm-bosisEnzyme)简称SVATE。是我国1984年研究成功,从蝮蛇毒中提炼出的酶类制剂,其主要成分为蛋白质,含有20余种蛇毒酶、10... 相似文献
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通过用蝮蛇栓酶对家兔实验性动脉粥样硬化影响的观察,发现Svate能明显抑制家兔主动脉AS,同时能明显降低血液丙二醛、血栓素及甘油三酯含量,能升高血液超氧化物歧2化酶活性及前列环素含量。说明Svate能预防AS,其机制与Svate减轻自由基损伤、恢复前列环素血检 平衡及降血脂密切相关。 相似文献
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蝮蛇抗栓酶的不良反应张海燕广西南宁市第二人民医院530031蝮蛇抗栓酶(Svate)是从蝮蛇毒中提取的酶制剂,是临床上常用的抗凝剂。近年来由于在医疗工作中广泛使用,其不良反应越来越多,现将其不良反应综述如下,以期临床用药时注意。1心血管系统反应杨菊贤... 相似文献
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蝮蛇抗栓酶的临床副作用 总被引:1,自引:0,他引:1
蝮蛇抗栓酶是一种从蝮蛇毒中提取的酶制剂。是以精氨酸酯酶为主有去纤、溶栓、解聚,扩血管、改善微循环,抗肿瘤等多功能抗凝作用的新药。经临床观察对脑血栓、脉管炎、冠心病和心肌梗塞等20多种疾病有较好的疗效,以往认为其副作用发生率低,随着抗栓酶临床应用的日趋广泛,发现它有一定的不良反应,现结合文献概述如下.1 一过性反应,可有发热,出汗、头痛、头胀、头晕、嗜睡、肢痛、肢体水肿、肢体发热等,一般不须任何处理可自行消退.魏氏等治疗冠心病50例,仅2例出现头晕、头痛.毕氏治疗冠心病50例有3例出现头晕,5例出现胸闷、气促、韩氏治疗脑血栓100例,有8例出现面部浮肿、陈氏等治疗脑血栓184例,有56例出 相似文献
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本文应用试验设计方法对蝮蛇抗栓酶提取分离进行了研究,结果指出,采用平衡液的缓冲系统(0.03M),流速以每小时约90ml,连续梯度洗脱盐浓度为0.4M,投样量5—6g时,提纯的蝮蛇抗栓酶的活性较高,产量比原工艺提高了15~20%,提取周期缩短15小时左右. 相似文献
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于1991年5月下旬在昆明召开的中国蛇毒酶临床应用研讨会后,陆续收到许多读者来信,询问精制蝮蛇抗栓酶有关问题。为了能较全面地回答读者来信,采访了有关专家并做了某些调查,对几个共同问题公开做答,不专门复信,见谅。一、精制蝮蛇抗栓酶的本质是什么?答:根据昆明会议信息。精制蝮蛇抗栓酶就是原来的“江浙蝮蛇毒抗栓酶-3号”,由中国医科大学老年病防治中心在沈阳第一制药厂生产的江浙蝮蛇抗栓酶(Svate)基础上,经过两次分离所得的产物。经过动物实验及临床验证认为:毒副反应明显低于原江浙蝮蛇抗栓酶。为了区别于原江浙蝮蛇抗栓酶,已被辽宁省卫生厅批准正式批量生产。商品名称为“精制蝮蛇抗栓酶”。为什么要取消“江浙”二字,其 相似文献
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蝮蛇抗栓酶(Svate)是从蝮蛇毒中提取的一种酶制剂,含有10种~15种酶,具有去纤、抗凝、降脂、扩张血管和改善微循环等作用.由于临床应用日益广泛,近来发现多种不良反应,其中有的是严重的不良反应.现简介如下.1 过敏性休克Svate为异体蛋白,可引起各种过敏反应,皮试阳性率为3.2%.高喜霞治疗一例骨髓炎,用药后5min,患者出现面色苍白、呼吸困难、全身紫绀、血压为0,立即注射肾上腺素、地塞米松等,症状缓解.周氏报道一例雷诺氏病,经多种方法治疗无效而应用Svate静滴,1min后出现胸闷、呼吸困难、紫绀、苍白、四肢厥冷、脉细弱,血压104/9pKa,进行性 相似文献
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蝮蛇抗栓酶与精制蝮蛇抗栓酶制剂的比较研究 总被引:1,自引:0,他引:1
本文作者对以东北长白山白眉蝮蛇毒为原料生产的两种酶制剂——蝮蛇抗栓酶与精制蝮蛇抗栓酶进行了比较研究。用 HPLC 柱层析粗毒得到15个蛋白峰,同时对两种酶制剂以 HPLC 层析用两根层析柱串联上样层析以提高其分辩率,得到两个图谱,蝮蛇抗栓酶有7个蛋白峰,而精制品有3~4个蛋白峰.同时以 SDS-PAGE 电泳图谱.蝮蛇抗栓酶呈现7~8条谱带,精制品有4~5条谱带,并与已知分子量的标准蛋白进行对比,结果表明两种酶制剂均非单一组分.蝮蛇抗栓酶谱带较多,精制品较纯.其分子量均在2~6万之间.蝮蛇抗栓酶几个组分有协同作用,每次剂量在0.25~0.50单位,即有明显疗效,而精制品临床用药剂量较大,每次0.75~1.0单位,多者达1.25单位(3~5支). 相似文献
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本文试用蝮蛇抗栓酶治疗急性软组织损伤25例进行治疗观察,同样取得较好的疗效,说明急性软组织损伤主要是局部血循环障碍,气滞血瘀,蝮蛇抗栓酶有改善血循环消肿止痛、抗炎的作用。 相似文献
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蝮蛇抗栓酶的不良反应及注意事项 总被引:1,自引:0,他引:1
蝮蛇抗栓酶的不良反应及注意事项尤荣开浙江省温州市第二医院神经内科325000蝮蛇抗栓酶是从蝮蛇蛇毒中提取的酶制剂,含有十几种不同刺激因子,具有类凝血酶的抗凝作用,临床广泛应用于脑心血管疾病的治疗,随着临床研究的深入,各种杂志陆续报道一些不良反应,为引... 相似文献
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《Current biology : CB》2019,29(11):1827-1832.e4
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M. Sebastin Santhosh M. Hemshekhar R. M. Thushara S. Devaraja K. Kemparaju K. S. Girish 《Cell biochemistry and function》2013,31(1):41-50
Snakebite is a serious medical and socio‐economic problem affecting the healthy individuals and agricultural and farming populations worldwide. In India, Vipera russelli snakebite is common, ensuing high morbidity and mortality. The venom components persuade multifactorial stress phenomenon and alter the physiological setting by causing disruption of the blood cells and vital organs. The present study demonstrates the anti‐ophidian property of Crocin (Crocus sativus), a potent antioxidant against viper venom‐induced oxidative stress. The in vivo oxidative damage induced by venom was clearly evidenced by the increased oxidative stress markers and antioxidant enzymes/molecules along with the proinflammatory cytokines including IL‐1β, TNF‐α and IL‐6. Furthermore, venom depleted the hemoglobin, hematocrit, mean corpuscular volume and platelet count in experimental animals. Crocin ameliorated the venom‐induced oxidative stress, hematological alteration and proinflammatory cytokine levels. At present, administration of antivenom is an effective therapy against systemic toxicity, but it offers no protection against the rapidly spreading oxidative damage and infiltration of pro‐inflammatory mediators. These pathologies will continue even after antivenom administration. Hence, a long‐term auxiliary therapy is required to treat secondary as well as neglected complications of snakebite. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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There are a huge number of phylogenetic studies based on mitochondrial DNA (mtDNA); however, these may represent gene trees that may not be congruent with the species tree. A solution to this problem is to include additional, independent, loci from the nuclear genome. At fine taxonomic levels, i.e. between populations and closely related species, previously suggested nuclear markers such as intron sequence data may not be appropriate. In this study we investigate the use of amplified fragment length polymorphisms (AFLP) to aid determination of the species tree for 24 specimens of a medically important snake, Trimeresurus albolabris. This is of particular importance for many venomous snakes as venom often varies intraspecifically. Five different primer combinations produced 434 bands and were analysed by constructing a phylogenetic tree using neighbour joining and principal component analysis. Results were similar across all methods and found distinct groupings. The results were compared with mtDNA data and a reconciled tree was constructed in order to determine the species tree for T. albolabris. We found that T. albolabris (sensu lato) is not monophyletic. Specimens from the Indonesian islands (except West Java) form a distinct clade and we propose elevation to species level. A specimen from Nepal is also distinct and suggests that this population also deserves specific status. We suggest that AFLPs may prove a valuable aid in determining species trees as opposed to gene trees at fine taxonomic levels and this should facilitate the incorporation of molecular data into such activities as antivenom production and conservation management. 相似文献
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尖吻蝮的人工繁育 总被引:7,自引:0,他引:7
In this article, we report our first experience of successful artificial propagation about the five paced pit viper ( Deinagkistrodon acutus ) and breeding to its second filial generation. In May, 1994, 18 adult snakes (8 males, 10 females) were captured in field, and were reared in man made environment. In July and August of the same year, 5 females laid 134 eggs in total (26 8±5 26), which were artificially incubated into 123 hatchlings. 100 hatchlings (average body weight 12 13±1 50 g)were selected to feed. Three years later, 58 snakes were alive (livability 58%). In September of 1997, April and May of 1998, some of the 58 snakes copulated. From July to August of 1998, 6 females laid 64 eggs in total, 58 of which were fertilized, and 54 were incubated into hatchlings in September of 1998. Therefore, we had successfully bred the second filial generation of the five paced pit viper in complete artificial environment. 相似文献
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中草药白花蛇舌草等对实验性大肠癌作用机制的研究 总被引:2,自引:0,他引:2
目的探讨白花蛇舌草等中药在体内对大肠癌的抑制作用和抑瘤机制。方法以大肠癌裸鼠移植瘤为动物模型,观察肿瘤的生长速度,免疫组化法及肠道菌群培养技术观察大肠癌裸鼠移植瘤PCNA表达及阳性细胞密度、肿瘤坏死因子和白介素6的表达以及肠道菌群的培养。结果白花蛇舌草和仙鹤草用药组肿瘤生长率小于对照组,达50.86%,微生态调节剂组低于用药组;在肠道菌群及免疫调节能力上用药组优于对照组,微生态调节剂组优于用药组。结论白花蛇舌草和仙鹤草在体内能显著抑制大肠癌的生长。 相似文献
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K. R. Rajashankar Inn-Ho Tsai Ch. Betzel 《Acta Crystallographica. Section D, Structural Biology》1999,55(5):1064-1065
The 28 kDa heterodimeric complex from Taiwan viper (F4/F7 complex) is composed of a neurotoxic phospholipase A2 (F4) and a non-toxic PLA2-like component (F7). Despite a high sequence identity (65%), the biological and pharmacological activities of F4 and F7 are contrasting. The complex is a structural analogue of Vipoxin found in the venom of the Bulgarian viper Vipera ammodites meridionalis. It is unclear how and why such varied bioactivities are expressed in these similar components. The F4/F7 complex has been crystallized using hanging-drop vapour diffusion and macroseeding techniques. The space group is monoclinic with unit-cell dimensions , , Å and °. X-ray intensity data to 2.0 Å resolution have been collected at 120 K and the structure has been solved using the molecular-replacement method. There are four F4/F7 complex molecules in the asymmetric unit, which do not exhibit any local point-group symmetry. 相似文献
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《Free radical research》2013,47(4-5):237-243
Fecl2, in Na phosphate buffer autoxidizes forming active oxygen species which damage deoxyribose. Di-and triphosphate adenine-nucleotides inhibit both Fe2+ autoxidation and deoxyribose damage in Na phosphate buffer pH 7.4. The inhibition is related to the number of charges of the adenine-nucleotide molecule: ATP at pH 7.4 is a better inhibitor than ADP; at a pH (6.5) close to the pK's of the third and fourth charge of ADP and ATP, ADP inhibition is greatly decreased whereas ATP inhibition is slightly affected. The extent of ATP inhibition of Fe2+ autoxidation depends both on ATP/Mg2+ and ATP/Fe2+ ratios in the reaction mixture. Formation of a Fe2+ -nucleotide complex appears to be the mechanism through which ATP and ADP inhibit autoxidation and thus the generation of active oxygen species. These findings are discussed in relation to physiological and pathological fluctuations of nucleotide concentrations. 相似文献
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Bruna Tadolini 《Free radical research》1989,5(4):237-243
Fecl2, in Na phosphate buffer autoxidizes forming active oxygen species which damage deoxyribose. Di-and triphosphate adenine-nucleotides inhibit both Fe2+ autoxidation and deoxyribose damage in Na phosphate buffer pH 7.4. The inhibition is related to the number of charges of the adenine-nucleotide molecule: ATP at pH 7.4 is a better inhibitor than ADP; at a pH (6.5) close to the pK's of the third and fourth charge of ADP and ATP, ADP inhibition is greatly decreased whereas ATP inhibition is slightly affected. The extent of ATP inhibition of Fe2+ autoxidation depends both on ATP/Mg2+ and ATP/Fe2+ ratios in the reaction mixture. Formation of a Fe2+ -nucleotide complex appears to be the mechanism through which ATP and ADP inhibit autoxidation and thus the generation of active oxygen species. These findings are discussed in relation to physiological and pathological fluctuations of nucleotide concentrations. 相似文献