期刊
NEPHROLOGY DIALYSIS TRANSPLANTATION
卷 25, 期 5, 页码 1688-1696出版社
OXFORD UNIV PRESS
DOI: 10.1093/ndt/gfq036
关键词
epithelial-to-mesenchymal transition; IL-6; peritoneal membrane; salt; TGF-beta(1)
Methods. Twenty-eight Wistar rats were randomized to a normal salt (NS) or a high salt (HS) intake. NS and HS rats had free access to tap water or NaCl 2% as drinking water, respectively. After 2 weeks, samples of peritoneum were taken, and TGF-beta(1), Interleukin 6 (IL-6) and vascular endothelial growth factor (VEGF) mRNA expression were quantified with qRT-PCR. Fibrosis and submesothelial PM thickness were scored. EMT was evaluated using fluorescence staining with cytokeratin and alpha smooth muscle actin (alpha-SMA). Results. Dietary salt intake caused peritoneal fibrosis and thickening of the submesothelial layer and induced EMT as identified by colocalization of cytokeratin and alpha-SMA in cells present in the submesothelial layer. Peritoneal TGF-beta(1) and IL-6 mRNA expression were upregulated in the HS group. Conclusion. High dietary salt intake induces EMT and peritoneal fibrosis, a process coinciding with upregulation of TGF-beta 1.
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