Zinc Deficiency Aggravates Oxidative Stress Leading to Inflammation and Fibrosis in Lung of Mice

被引：26

作者：

Zhang, Qirui ^{[1
]}

Xue, Yao ^{[1
]}

Fu, Yuxin ^{[1
]}

Bao, Bowen ^{[1
]}

Guo, Meng-yao ^{[1
]}

机构：

[1] Northeast Agr Univ, Coll Vet Med, Harbin 150030, Peoples R China

来源：

BIOLOGICAL TRACE ELEMENT RESEARCH | 2022年 / 200卷 / 09期

关键词：

Zinc; Lung; Inflammation; Fibrosis; Extracellular matrix; MATRIX METALLOPROTEINASES; EXPRESSION; ANTIOXIDANT;

D O I：

10.1007/s12011-021-03011-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Zinc (Zn) is an essential trace element for the body. Studies have confirmed that Zn deficiency can cause oxidative stress. The purpose of the present study was designed to investigate the effect of Zn on fibrosis in lung of mice and its mechanism. Mice were fed with different Zn levels dietary, then we found that the Zn-deficient diet induced a decrease of Zn level in lung tissue. The results also revealed the alveolar structure hyperemia and an inflammatory exudated in the alveolar cavity. Moreover, immunohistochemical results showed that the expression of alpha-smooth muscle actin (alpha-SMA) increased. And the Sirius red staining indicated an increase in collagen with Zn deficiency. Furthermore, oxygen radicals (ROS) levels were significantly increased, and the antioxidants were significantly decreased. Meanwhile, inflammatory factors (TNF-alpha and IL-1 beta) were remarkably increased, and the ELISA results showed that collagen I, III, and IV and fibronectin (FN) were increased. In addition, the expressions of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinase (TIMPs) were detected by qPCR. The results showed that the expression of TIMPs was increased but the expression of MMPs was decreased. The results of the experiment in vitro were consistent with that in vivo. All the results indicated that Zn deficiency aggravated the oxidative stress response of lung tissue to induce inflammation, leading to fibrosis in lung.

引用

页码：4045 / 4057

页数：13

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