Berthier, Céline C; Wahl, Patricia R; Le Hir, Michel; Marti, Hans-Peter; Wagner, Ulrich; Rehrauer, Hubert; Wüthrich, Rudolf P; Serra, Andreas L (2008). Sirolimus ameliorates the enhanced expression of metalloproteinases in a rat model of autosomal dominant polycystic kidney disease. Nephrology, dialysis, transplantation, 23(3), pp. 880-9. Oxford: Oxford University Press 10.1093/ndt/gfm697
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BACKGROUND: Remodelling of matrix and tubular basement membranes (TBM) is a characteristic of polycystic kidney disease. We hypothesized that matrix and TBM degradation by metalloproteinases (MMPs) could promote cyst formation. We therefore investigated the renal expression of MMPs in the Han:SPRD rat model of autosomal dominant polycystic kidney disease (ADPKD) and examined the effect of sirolimus treatment on MMPs. METHODS: 5-week-old male heterozygous (Cy/+) and wild-type normal (+/+) rats were treated with sirolimus (2 mg/kg/day) through drinking water for 3 months. RESULTS: The mRNA and protein levels of MMP-2 and MMP-14 were markedly increased in the kidneys of heterozygous Cy/+ animals compared to wild-type +/+ as shown by RT-PCR and Western blot analyses for MMP-2 and MMP-14, and by zymography for MMP-2. Strong MMP-2 expression was detected by immunoperoxidase staining in cystic epithelial cells that also displayed an altered, thickened TBM. Tissue inhibitor of metalloproteinases-2 (TIMP-2) expression was not changed in Cy/+ kidneys. Sirolimus treatment leads to decreased protein expression of MMP-2 and MMP-14 in Cy/+, whereas MMP-2 and MMP-14 mRNA levels and TIMP-2 protein levels were not affected by sirolimus. CONCLUSION: In summary, in kidneys of the Han:SPRD rat model of ADPKD, there is a marked upregulation of MMP-2 and MMP-14. Sirolimus treatment was associated with a marked improvement of MMP-2 and MMP-14 overexpression, and this correlated also with less matrix and TBM alterations and milder cystic disease.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Nephrology and Hypertension |
UniBE Contributor: |
Marti, Hans-Peter |
ISSN: |
0931-0509 |
ISBN: |
18042615 |
Publisher: |
Oxford University Press |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 15:05 |
Last Modified: |
05 Dec 2022 14:20 |
Publisher DOI: |
10.1093/ndt/gfm697 |
PubMed ID: |
18042615 |
Web of Science ID: |
000253858300016 |
BORIS DOI: |
10.7892/boris.28093 |
URI: |
https://boris.unibe.ch/id/eprint/28093 (FactScience: 116588) |