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Enhanced expression of ETRs in spleen tissues of patients with schistosome-induced hepatic fibrosis.

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posted on 2020-10-19, 17:38 authored by Hongyan Kong, Jinan He, Shusen Guo, Qiqin Song, Dandan Xiang, Ran Tao, Haijing Yu, Guang Chen, Zhiyong Huang, Qin Ning, Jiaquan Huang

(A) The human spleen tissues were stained with H&E and Masson’s trichrome. Scale bar, 200 μm. (B-G) qPCR analysis of the expression levels of ET-1, ETAR, ETBR, Col1α1, Col3α1 and IL-10 in spleen samples. Cont (n = 9), CS (n = 12), CHB (n = 13). (H) The IL-10 concentration in spleen tissue homogenates was determined by ELISA. Cont (n = 9), CS (n = 12), CHB (n = 13). (I) Representative immunohistochemical staining of ETAR, ETBR, collagen I and collagen III. Black arrows indicate the ETRs, collagen I and collagen III positive cells. Scale bar, 100 μm. (J) Representative immunofluorescence staining of ETAR, ETBR and CD20+ B cells in human spleen tissues. Insets show a higher magnification of the outlined area. Yellow arrows denote positive cells. Scale bar, 50 μm. (K) The fluorescence intensity was measured using IPP software (n = 4). (L-N) ETAR and ETBR proteins were determined by western blotting, quantified using Image J analysis, and normalized to GAPDH (n = 7). Data are represented as the median and interquartile range from two independent experiments. Multiple comparisons were performed by Kruskal–Wallis with Dunn’s posttest (B-H, M-N) or the Mann-Whitney U-test (K). *P < 0.05. Abbreviation: Cont, control; CS, chronic schistosomiasis; CHB, chronic hepatitis B; RP: red pulp; WP: white pulp.