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在小鼠模型中,叶下珠素通过减轻氧化应激和炎症反应、提高三磷酸腺苷水平,对心肌缺血再灌注损伤发挥心脏保护作用。

Cardioprotective role of phyllanthin against myocardial ischemia-reperfusion injury by alleviating oxidative stress and inflammation with increased adenosine triphosphate levels in the mice model.

作者信息

Zhao Cong, Yang Yufei, An Yi, Yang Bin, Li Peifeng

机构信息

Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China.

College of Basic Medicine, Qingdao Binhai University, Qingdao, China.

出版信息

Environ Toxicol. 2021 Jan;36(1):33-44. doi: 10.1002/tox.23008. Epub 2020 Aug 14.

Abstract

BACKGROUND

Ischemic heart disease is an imperative cause of high morbidity and mortality globally. The cardiac ischemia/reperfusion damage occur in both reperfusion and ischemia.

OBJECTIVE

In this exploration, we have planned to examine the cardio-protective action of phyllanthin against the myocardial ischemic-reperfusion injury in mice.

MATERIALS AND METHODS

The myocardial ischemic reperfusion injury (MI-RI) stimulated via coronary artery occlusion, followed by the 10 mg/kg of phyllanthin treatment. The serum cardiac markers and pro-inflammatory markers level was investigated by using the assay kits. The expressions of oxidative stress and inflammatory markers level were investigated by immunohistochemical analysis. Lipid peroxidation, antioxidant enzymes, and ATPase levels level was examined by standard methods. The expression of oxidative stress markers were inspected by the reverse transcription polymerase chain reaction technique. The heart histology was investigated microscopically.

RESULTS

The phyllanthin treatment increased the body weight, and heart weight also diminished the infarct size in the MI/RI mice. Cardiac markers status was diminished and the blood pressure markers were augmented by the phyllanthin. Histological analysis revealed the protective role of phyllanthin. Suppressed lipid peroxidation and enhanced antioxidant enzymes were noted in the phyllanthin treated mice MI-RI mice. Phyllanthin appreciably suppressed the pro-inflammatory regulators that is, NF-αB p65, IL-6, IL-1β, and TNF-α and enhanced the antioxidant marker expressions. ATPase levels were improved by the phyllanthin in the MI-RI mice.

CONCLUSION

These novel findings were confirmed the therapeutic role of phyllanthin against the MI-RI in mice. Hence, it can be a promising agent to treat the MI-RI induced cardiac dysfunction.

摘要

背景

缺血性心脏病是全球高发病率和高死亡率的重要原因。心脏缺血/再灌注损伤在再灌注和缺血过程中均会发生。

目的

在本研究中,我们计划研究叶下珠素对小鼠心肌缺血再灌注损伤的心脏保护作用。

材料与方法

通过冠状动脉闭塞诱导心肌缺血再灌注损伤(MI-RI),随后给予10mg/kg叶下珠素治疗。使用检测试剂盒检测血清心脏标志物和促炎标志物水平。通过免疫组织化学分析研究氧化应激和炎症标志物水平的表达。采用标准方法检测脂质过氧化、抗氧化酶和ATP酶水平。通过逆转录聚合酶链反应技术检测氧化应激标志物的表达。显微镜下观察心脏组织学。

结果

叶下珠素治疗增加了体重,心脏重量也减轻了MI/RI小鼠的梗死面积。叶下珠素降低了心脏标志物水平,提高了血压标志物水平。组织学分析显示叶下珠素具有保护作用。在接受叶下珠素治疗的MI-RI小鼠中,脂质过氧化受到抑制,抗氧化酶增强。叶下珠素显著抑制促炎调节因子,即NF-αB p65、IL-6、IL-1β和TNF-α,并增强抗氧化标志物的表达。叶下珠素提高了MI-RI小鼠的ATP酶水平。

结论

这些新发现证实了叶下珠素对小鼠MI-RI的治疗作用。因此,它可能是治疗MI-RI诱导的心脏功能障碍的一种有前景的药物。

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