Expression of the 78 kD glucose-regulated protein is induced by endoplasmic reticulum stress in the development of hepatopulmonary syndrome
| Autor: | Hui Pang, Limin Wang, Dewu Han, Jianhong Guo, Xujiong Li, Xiaoxia Tian, Jingquan Ji, Yanjun Wu, Yimin Fan, Zhongfu Zhao, Lili Zhang, Minli Lv, Baohong Li, Yan Liu, Lina Lai, Cheng Ji, Chen Li, Cuiying Zhang, Jiantao Jia, Huiying Zhang |
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| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Cirrhosis Glucose-regulated protein H&E stain Article Rats Sprague-Dawley chemistry.chemical_compound Malondialdehyde Internal medicine Genetics medicine Animals Rats Wistar Hepatopulmonary syndrome Lung Heat-Shock Proteins biology Tumor Necrosis Factor-alpha Endoplasmic reticulum Alanine Transaminase General Medicine respiratory system Endoplasmic Reticulum Stress medicine.disease Endotoxins Disease Models Animal Endocrinology Liver chemistry Alanine transaminase biology.protein Tumor necrosis factor alpha Hepatopulmonary Syndrome |
| Zdroj: | Gene. 537:115-119 |
| ISSN: | 0378-1119 |
| DOI: | 10.1016/j.gene.2013.11.065 |
| Popis: | Objective This study is to explore the role of 78 kD glucose-regulated protein (GRP78) in the development of hepatopulmonary syndrome (HPS) in rats. Methods The rat model of liver cirrhosis and HPS were induced with multiple pathogenic factors. Hematoxylin and eosin (H & E) staining was performed to detect the pathological changes of the lung and liver tissues. The levels of alanine transferase (ALT), endotoxin, and tumor necrosis factor-α (TNF-α) in plasma and TNF-α and malondialdehyde (MDA) in lung tissues were detected. RT-PCR and Western blotting were conducted to detect the mRNA and protein expression levels of GRP78 in lungs. Results The plasma endotoxin level was gradually increased as HPS developed, and the mRNA and protein expression levels of GRP78 in lungs were also increased as the disease progressed. The levels of ALT and TNF-α in plasma and the contents of TNF-α and MDA in lung tissues were gradually increased along with the disease progression, with a strong positive correlation. Compared with controls, the plasma TNF-α level and the mRNA and protein expression levels of GRP78 in lung tissues were significantly higher in rats with HPS. The levels of endotoxin and ALT in plasma and the level of MDA in lungs were significantly higher in rats with HPS than controls. Conclusions The increased GRP78 expression is indicative of endoplasmic reticulum stress response during HPS, which may play an important role in the disease pathogenesis. |
| Databáze: | OpenAIRE |
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