Recombinant fibromodulin has therapeutic effects on diabetic nephropathy by down-regulating transforming growth factor-β1 in streptozotocin-induced diabetic rat model | ||
| Iranian Journal of Basic Medical Sciences | ||
| مقاله 7، دوره 19، شماره 3، خرداد 2016، صفحه 265-271 اصل مقاله (1.13 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22038/ijbms.2016.6645 | ||
| نویسندگان | ||
| Maryam Foroutan Jazi1؛ Alireza Biglari* 2؛ Saeideh Mazloomzadeh3؛ Paul Kingston4؛ Ali Ramazani2؛ Javad Tavkoli Bazzaz5؛ Mehdi Eskandari6 | ||
| 1Department of Molecular Medicine & Genetics, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran | ||
| 2Cancer Gene Therapy Research Center, Zanjan University of Medical Sciences, Zanjan, Iran | ||
| 3Department of Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran | ||
| 4Vascular Gene Therapy Unit, Research School of Clinical & Laboratory Sciences, Manchester Academic Health Science Center, The University of Manchester, Manchester, UK | ||
| 5Department of Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran | ||
| 6Department of Physiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran | ||
| چکیده | ||
| Objective(s):Diabetic nephropathy is an important long-term complication of diabetes mellitus which appears to be partially mediated by an increase in secretion of transforming growth factor-β (TGF-β). Fibromodulin, the small leucine-rich proteoglycan, has been proposed to be the potent TGFβ1 modulator. In this study, the therapeutic effects of recombinant adenoviral vectors expressing fibromodulin on TGF-β1 expression on diabetic nephropathy were assessed. Materials and Methods:Forty-eight Sprague-Dawley rats were divided into 4 groups: STZ-induced diabetic rats (diabetic-control), fibromodulin adenovirus vector treated STZ rats (Ad- fibromodulin), and Ad-lacZ-treated STZ rats (Ad-lacZ), and vehicle control (PBS-control). At 10 weeks after STZ treatment, we measured urinary albumin excretion (UAE), urine creatinine was measured by Jaffe method.We also measured kidney TGF-β1 levels by reverse transcription polymerase chain reaction and Real-time PCR. Results:Urine albumin to creatinine ratio or UAE level were listed in four groups. UAE difference between healthy and diabetic rats in all three groups were significant (P≤0.005) and between the control group and treated groups were not significant. Our results indicated that TGF-β1gene expression in diabetic rats were increased and difference between normal group and diabetic group were significant (P≤0.001). Fibromodulin gene transfection mediated by a recombinant adenovirus decreased TGF-β1 level in STZ-induced diabetic rats and TGF-β1 mRNA in diabetic kidney were reduced 2 weeks after Ad-fibromodulin injection. Conclusion:Intraperitoneal injection of adenoviral vectors expressing fibromodulin reduced TGF-β1 level in diabetic rat models. The molecular mechanisms involved in this process require further study. | ||
| کلیدواژهها | ||
| Diabetic rats؛ Diabetic nephropathy؛ Fibromodulin؛ Gene Therapy؛ TGF-β1 | ||
| مراجع | ||
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