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  • Title: Urinary exosomal microRNA panel unravels novel biomarkers for diagnosis of type 2 diabetic kidney disease.
    Author: Eissa S, Matboli M, Aboushahba R, Bekhet MM, Soliman Y.
    Journal: J Diabetes Complications; 2016; 30(8):1585-1592. PubMed ID: 27475263.
    Abstract:
    BACKGROUND: A potential approach adopted in the current study is to design a panel based on in silico retrieval of novel miRNAs related to diabetic kidney disease and to evaluate its usefulness in disease diagnosis. PATIENT AND METHODS: In the current study, we measured the differential expression of a 6 miRNA panel in urine pellet and exosome in an initial screening group using syber green-based PCR array. Also, we performed pathway enrichment analysis of the key target genes of these miRNAs. Finally, we selected the most significantly up-regulated miRNAs in DKD, exosomal miR-15b, miR-34a and miR-636, that were measured by real-time PCR in a larger independent set of 180 participants to evaluate their usefulness as novel urine biomarkers for diagnosis diabetic kidney disease. RESULTS: PCR array analysis showed that miR-15b, miR-34a, and miR-636 were upregulated in both urine pellet and exosome of type 2DKD patients. qRT-PCR validation in the larger independent set of participants confirmed the significant up-regulation of these urinary exosomal miRs (P<0.001). Notably, a positive correlation was found between these miRs, serum creatinine and urinary protein creatinine ratio. The sensitivity of this miRs based panel in urine exosomes reached 100% in diagnosis of DKD. CONCLUSION: We identified urinary exosomal miR-15b, miR-34a, and miR-636 as a novel diagnostic panel and a major contributor in the pathogenesis of diabetic kidney disease.
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