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Antoine MH, Debelle F, Piccirilli J, El Kaddouri F, Declèves AE, De Prez E, Husson C, Mies F, Bourgeade MF, Nortier JL. Human bone morphogenetic protein-7 does not counteract aristolochic acid-induced renal toxicity. J Appl Toxicol 2015; 35:1520-30. [PMID: 25663515 DOI: 10.1002/jat.3116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 11/08/2022]
Abstract
Aristolochic acids (AA) are nephrotoxic and profibrotic agents, leading to chronic kidney disease. As some controversial studies have reported a nephroprotective effect of exogenous recombinant human bone morphogenetic protein (rhBMP)-7 in several models of renal fibrosis, we investigated the putative effect of rhBMP-7 to prevent progressive tubulointerstitial damage after AA intoxication in vitro and in vivo. In vitro, the toxicity of AA on renal tubular cells was demonstrated by an increase in vimentin as well as a decrease in β-catenin expressions, reflecting a dedifferentiation process. Increased fibronectin and interleukin-6 levels were measured in the supernatants. Enhanced α-SMA mRNA levels associated to decreased E-cadherin mRNA levels were also measured. Incubation with rhBMP-7 only prevented the increase in vimentin and the decrease in β-catenin expressions. In vivo, in a rat model of AA nephropathy, severe tubulointerstitial lesions induced by AA after 10 and 35 days (collagen IV deposition and tubular atrophy), were not prevented by the rhBMP-7 treatment. Similarly, rhBMP-7 did not ameliorate the significant increase in urinary concentrations of transforming growth factor-β. In summary, our in vitro data demonstrated a poor beneficial effect of rhBMP-7 to reverse cell toxicity while, in vivo, there was no beneficial effect of rhBMP-7. Therefore, further investigations are needed to confirm the exact role of BMP-7 in progressive chronic kidney disease.
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Affiliation(s)
- Marie-Hélène Antoine
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
| | - Frédéric Debelle
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
| | - Julie Piccirilli
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
| | - Fadoua El Kaddouri
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
| | - Anne-Emilie Declèves
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels.,Laboratory of Molecular Physiology (URPhyM), University of Namur, Namur
| | - Eric De Prez
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
| | - Cécile Husson
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
| | - Frédérique Mies
- Laboratory of Physiology, Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Joëlle L Nortier
- Laboratory of Experimental Nephrology, Faculty of Medicine, Université Libre de Bruxelles, Brussels
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