Characterization of Superoxide Dismutase in the Metacestode of Echinococcus granulosus Sensu Stricto (s. s.) and Buffalo Liver.

IF 1.2 3区 农林科学 Q4 PARASITOLOGY
Humera Aslam, Monika Rani, Malik Irshadullah
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引用次数: 0

Abstract

Purpose: The present study assessed the level of superoxide dismutase (SOD) in the metacestode of Echinococcus granulosus sensu stricto (s. s.) as well as in the liver of Indian water buffalo (Bubalus bubalis).

Methods: SOD activity was analyzed by the pyrogallol autoxidation assay and electrophoretic fractionation by native polyacrylamide gel electrophoresis, followed by specific staining of the enzyme. Besides this, metallic co-factor of SOD was determined using different concentrations of inhibitors.

Results: The protoscoleces and cyst wall have appreciable amount of SOD, and the level of SOD was found to be significantly (p ≤ 0.001) higher in the fertile compared to non-fertile cyst wall and the infected than non-infected liver. Four SOD activity bands were observed in the protoscoleces, while one band each in the fertile and non-fertile cyst wall, suggesting the occurrence of isozymes in the protoscoleces but not in the cyst wall. Approximately 99% and 16% of enzyme activity were inhibited at 5 mM concentration of KCN and H2O2, respectively. Furthermore, no activity band of SOD was detected in the gels treated with 5 mM KCN whereas, the same concentration of H2O2 and NaN3 does not affect the visibility of SOD activity band.

Conclusion: The present study indicated that the protoscoleces and cyst wall contain a significant amount of SOD, which likely contributes to their survival within the hostile microenvironment of the host. Inhibition studies revealed the presence of Cu/Zn SOD in the protoscoleces, cyst wall, and host liver. The elevated SOD levels in infected liver may be a protective adaptation against self-generated reactive oxygen species (ROS).

细粒棘球绦虫和水牛肝中超氧化物歧化酶的研究。
目的:本研究测定了狭义细粒棘球绦虫(s.s.s .)囊体和印度水牛(Bubalus bubalis)肝脏中超氧化物歧化酶(SOD)的水平。方法:采用邻苯三酚自氧化法和天然聚丙烯酰胺凝胶电泳法对SOD活性进行分析,并对酶进行特异性染色。此外,用不同浓度的抑制剂测定SOD的金属辅助因子。结果:原头节和囊壁中SOD含量显著,可育肝组织SOD水平显著高于非可育肝组织(p≤0.001),感染肝组织SOD水平显著高于非感染肝组织(p≤0.001)。原头节中有4条SOD活性带,可育囊壁和非可育囊壁各有1条活性带,说明同工酶存在于原头节而不存在于囊壁。5 mM浓度的KCN和H2O2分别抑制了约99%和16%的酶活性。此外,5 mM KCN处理的凝胶中未检测到SOD活性带,而相同浓度的H2O2和NaN3不影响SOD活性带的可见性。结论:本研究表明,原头节和囊壁含有大量的SOD,这可能有助于它们在宿主的恶劣微环境中生存。抑制研究显示Cu/Zn SOD存在于原头节、囊壁和宿主肝脏。感染肝脏中SOD水平升高可能是一种保护性适应,以对抗自生活性氧(ROS)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Acta Parasitologica
Acta Parasitologica 医学-寄生虫学
CiteScore
3.10
自引率
6.70%
发文量
149
审稿时长
6-12 weeks
期刊介绍: Acta Parasitologica is an international journal covering the latest advances in the subject. Acta Parasitologica publishes original papers on all aspects of parasitology and host-parasite relationships, including the latest discoveries in biochemical and molecular biology of parasites, their physiology, morphology, taxonomy and ecology, as well as original research papers on immunology, pathology, and epidemiology of parasitic diseases in the context of medical, veterinary and biological sciences. The journal also publishes short research notes, invited review articles, book reviews. The journal was founded in 1953 as "Acta Parasitologica Polonica" by the Polish Parasitological Society and since 1954 has been published by W. Stefanski Institute of Parasitology of the Polish Academy of Sciences in Warsaw. Since 1992 in has appeared as Acta Parasitologica in four issues per year.
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