Expression of Fibrosis-Related Genes in Canine Chronic Hepatitis

Author:

Kanemoto H.1,Ohno K.1,Sakai M.2,Nakashima K.1,Takahashi M.1,Fujino Y.1,Tsujimoto H.1

Affiliation:

1. Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan

2. Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan

Abstract

Molecular regulation of fibrosis in chronic canine hepatitis is poorly understood. The authors employed quantitative polymerase chain reaction (PCR) to determine the expression levels of genes reported to be related to fibrosis in other species (human, mouse, and rat) and to elucidate the relationship of these genes with the degree of fibrosis and the presence or absence of ascites and/or jaundice in dogs with hepatitis. Nine fibrosis-related genes were assayed: PDGFB, PDGFD, MMP2, TIMP1, THBS1, COL1A1, COL3A1, TGFB1, and TGFB2. Liver samples of 15 dogs with chronic hepatitis and 4 healthy control dogs were obtained via laparoscopic biopsy and subjected to histologic and quantitative PCR analyses. The expression of all 9 genes showed significant positive correlation ( P < .01, r > .70) with the degree of fibrosis. Furthermore, the expression levels of all genes except TGFB1 were significantly higher ( P < .05) in dogs with hepatic failure–related symptoms (ascites/jaundice). Results suggest that these 9 genes are integral to the development of fibrosis in canine chronic hepatitis.

Publisher

SAGE Publications

Subject

General Veterinary

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