首页> 外文期刊>Journal of biochemical and molecular toxicology >Taurine prevents mitochondrial membrane permeabilization and swelling upon interaction with manganese: Implication in the treatment of cirrhosis‐associated central nervous system complications
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Taurine prevents mitochondrial membrane permeabilization and swelling upon interaction with manganese: Implication in the treatment of cirrhosis‐associated central nervous system complications

机译:牛磺酸可防止线粒体膜透化和溶胀与锰的相互作用:治疗肝硬化相关的中枢神经系统并发症

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Abstract Brain tissue manganese (Mn) accumulation is a cirrhosis‐associated complication. Cellular mitochondria are among the potential targets for Mn‐induced cytotoxicity. Taurine is one of the most abundant amino acids with high concentrations in human brain tissue. Several pharmacological properties including regulation of mitochondrial function are attributed to taurine. The current investigation was designed to evaluate the effect of taurine on Mn‐induced mitochondrial impairment in isolated mice brain mitochondria. The brain mitochondria were exposed to increasing concentrations of Mn (0.1‐10?mM). Taurine (0.1, 1, and 10?mM) was added as the protective agent. The severe collapse of mitochondrial membrane potential, decreased mitochondrial dehydrogenases activity, mitochondrial swelling, and depleted mitochondrial adenosine triphosphate (ATP) were evident in Mn‐exposed mitochondria. It was found that taurine administration preserved mitochondrial ATP, prevented mitochondrial depolarization and swelling, and increased mitochondrial dehydrogenases activity. These data suggest mitochondrial protection as an underlying mechanism for the protective effects of taurine against Mn toxicity.
机译:摘要脑组织锰(Mn)积累是一种肝硬化相关的并发症。细胞线粒体是Mn诱导细胞毒性的潜在靶标中。牛磺酸是人脑组织中具有高浓度的最丰富的氨基酸之一。几种药理学性质,包括线粒体功能调节归因于牛磺酸。目前的调查旨在评估牛磺酸对菌诱导的小鼠脑线粒体脑线粒体诱导的线粒体损伤的影响。脑线粒体暴露于越来越多的Mn(0.1-10Ωmm)。加入牛磺酸(0.1,1和10μm)作为保护剂。线粒体膜电位的严重塌陷,线粒体脱氢酶活性,线粒体肿胀和耗尽的线粒体腺苷三磷酸(ATP)在Mn暴露的线粒体中明显明显。发现牛磺酸给药保存了线粒体ATP,防止了线粒体去极化和溶胀,并增加了线粒体脱氢酶活性。这些数据表明线粒体保护作为牛磺酸对MN毒性保护作用的潜在机制。

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