当前位置: X-MOL 学术Life Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Tiron protects against nicotine-induced lung and liver injury through antioxidant and anti-inflammatory actions in rats in vivo
Life Sciences ( IF 5.2 ) Pub Date : 2020-09-13 , DOI: 10.1016/j.lfs.2020.118426
Shimaa Khaled 1 , Mirhan N Makled 2 , Manar A Nader 2
Affiliation  

Tobacco smoking is a major health problem associated with lung and liver damage. Lung and liver damage secondary to tobacco smoking is mediated through nicotine-induced oxidative stress. Therefore, we hypothesized that antioxidant treatment with tiron may improve nicotine-induced lung and liver damage. Rats were divided into six groups, a control, nicotine (10 mg/kg/day, i.p.; for 8 weeks) and tiron (100 or 200 mg/kg/day, i.p.; for 8 weeks) with or without nicotine administration. Tiron improved survival rate and attenuated lung and liver damage as reflected by decreased total and differential cell counts, lactate dehydrogenase (LDH) activity in bronchoalveolar lavage fluid (BALF) and decreased alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in serum; also histopathological examination confirmed the protective effect of tiron in lung and liver tissues of nicotine treated rats. Tiron attenuated dyslipidemia, which is associated with nicotine. These ameliorative effects of tiron may be mainly due to its antioxidant effect as proved by a significant decrease in malondialdehyde (MDA) content, reactive oxygen species (ROS) and total nitrite/nitrate (NOx) levels, and increase in reduced glutathione (GSH) level, catalase (CAT) and superoxide dismutase (SOD) activities. This is likely related to suppression of protein levels of NADPH oxidase enzyme (NOX1), inducible nitric oxide synthase (iNOS), nuclear factor kappa B (NF-κB) and tumor necrosis factor alpha (TNF-α); and up-regulation of protein levels of nuclear factor erythroid-2 (Nrf2). This makes tiron (synthetic analogue of vitamin E) good candidate for future use to minimize nicotine's hazards among smokers.

中文翻译:


钛隆通过体内抗氧化和抗炎作用,防止尼古丁引起的肺和肝损伤



吸烟是与肺和肝损伤相关的主要健康问题。吸烟继发的肺和肝损伤是通过尼古丁诱导的氧化应激介导的。因此,我们假设用钛隆进行抗氧化治疗可能会改善尼古丁引起的肺和肝损伤。将大鼠分为六组:对照组、尼古丁组(10 mg/kg/天,腹腔注射;持续 8 周)和提隆组(100 或 200 mg/kg/天,腹腔注射;持续 8 周),给予或不给予尼古丁。泰隆提高了存活率并减轻了肺和肝损伤,具体表现在总细胞计数和分类细胞计数降低、支气管肺泡灌洗液 (BALF) 中乳酸脱氢酶 (LDH) 活性以及丙氨酸转氨酶 (ALT)、天冬氨酸转氨酶 (AST) 和碱性磷酸酶降低。血清中的ALP);组织病理学检查也证实了替隆对尼古丁治疗大鼠的肺和肝组织的保护作用。钛隆可减轻与尼古丁有关的血脂异常。钛隆的这些改善作用可能主要是由于其抗氧化作用,丙二醛 (MDA) 含量、活性氧 (ROS) 和总亚硝酸盐/硝酸盐 (NOx) 水平显着降低,还原型谷胱甘肽 (GSH) 水平增加,证明了这一点。水平、过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性。这可能与 NADPH 氧化酶 (NOX1)、诱导型一氧化氮合酶 (iNOS)、核因子 kappa B (NF-κB) 和肿瘤坏死因子 α (TNF-α) 的蛋白质水平受到抑制有关;以及核因子 erythroid-2 (Nrf2) 蛋白质水平的上调。这使得 Tiron(维生素 E 的合成类似物)成为未来用于最大限度减少尼古丁对吸烟者的危害的良好候选者。
更新日期:2020-09-13
down
wechat
bug