Liver stiffness correlates with serum osteopontin and TAZ expression in human liver cirrhosis.

Autor: Khajehahmadi Z; Department of Clinical Biochemistry, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran., Mohagheghi S; Department of Clinical Biochemistry, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran., Nikeghbalian S; Shiraz Transplant Center, Namazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran., Geramizadeh B; Transplant Research Center, Pathology Department, Shiraz University of Medical Sciences, Shiraz, Iran., Khodadadi I; Department of Clinical Biochemistry, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran., Karimi J; Department of Clinical Biochemistry, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran., Tavilani H; Department of Clinical Biochemistry, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
Jazyk: angličtina
Zdroj: Annals of the New York Academy of Sciences [Ann N Y Acad Sci] 2020 Apr; Vol. 1465 (1), pp. 117-131. Date of Electronic Publication: 2019 Nov 07.
DOI: 10.1111/nyas.14259
Abstrakt: The pivotal role of the extracellular matrix (ECM) as both a cause and consequence of liver fibrosis is striking. However, mechanotransducer molecules and profibrogenic factors induced by liver stiffness are still unclear. The current study aimed to investigate liver stiffness and its correlation with the expression of the transcriptional coactivator with PDZ-binding motif (TAZ) and serum osteopontin (OPN) in human cirrhosis. In this case-control study, liver tissue stiffness was determined using atomic force microscopy in cirrhotic livers (n = 38) of different etiologies and in controls (n = 10). Immunohistochemical and qRT-PCR analyses were performed to analyze TAZ expression. Besides, western blotting and ELISA were performed to assess liver Indian hedgehog and serum OPN levels, respectively. Liver stiffness, TAZ expression, and hepatic gene expression and serum protein levels of OPN were significantly increased in patients with cirrhosis compared with the control groups (all P < 0.001), specifically in autoimmune- and alcohol-related cirrhosis. In cirrhotic patients, liver stiffness was significantly associated with the expression of nuclear TAZ and OPN. The correlation between matrix stiffness as a mechanical property, TAZ as a potential mechanotransducer, and OPN as a matricellular factor suggests possible effects of mechanical features of the ECM on the expression of the aforementioned profibrogenic markers, which is predominant in autoimmune- and alcohol-related cirrhosis.
(© 2019 New York Academy of Sciences.)
Databáze: MEDLINE
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