Tianjin Medical Journal ›› 2022, Vol. 50 ›› Issue (10): 1077-1082.doi: 10.11958/20220434

• Clinical Research • Previous Articles     Next Articles

Expression and clinical significance of serum miR-27b-3p and miR-342-3p in patients with type 2 diabetic nephropathy

HAN Jing1(), GU Jinyi2, NIE Junxu3, ZHANG Yanping3, ZHAO Linghua4,()   

  1. 1 Department of Nephrology, the Affiliated Hospital of Yunnan University (the Second People's Hospital of Yunnan / Yunnan Eye Hospital), Kunming 650032, China
    2 Departmet of Laboratory, the Affiliated Hospital of Yunnan University (the Second People's Hospital of Yunnan / Yunnan Eye Hospital), Kunming 650032, China
    3 Departmet of Endocrinology, the Affiliated Hospital of Yunnan University (the Second People's Hospital of Yunnan / Yunnan Eye Hospital), Kunming 650032, China
    4 Infection Control Division, Shanxi Cancer Hospital
  • Received:2022-03-25 Revised:2022-05-11 Published:2022-10-15 Online:2022-10-20
  • Contact: ZHAO Linghua E-mail:hanjing197807@163.com;jhz072100@163.com

Abstract:

Objective To investigate the serum expression characteristics of miR-27b-3p and miR-342-3p in type 2 diabetic nephropathy (DN) patients and the diagnostic value for DN. Methods A total of 157 patients with DN were selected and divided into the normal albuminuria group (NA group, n=49), the microalbuminuria group (MA group, n=41) and the macroalbuminuria group (DN group, n=67) according to the ratio of albumin to creatinine (UACR) of urine specimens. Clinical data and the expression of serum miR-27b-3p and miR-342-3p, renal function and urinary fibrosis indicators were detected by real-time quantitative polymerase chain reaction. Blood urea nitrogen (BUN) and blood creatinine (Scr), were detected by automatic biochemical analyzer. Urine type Ⅳ collagen (Ⅳ-C), laminin (LN) and type Ⅲprocollagen peptide (PCⅢ) were detected by double-antibody sandwich enzyme-linked immunosorbent assay. The factors influencing the pathogenesis of DN and the diagnostic value of miR-27b-3p and miR-342-3p for DN were analyzed. Results Compared with the NA group, the levels of HbA1c, UACR, urinary Ⅳ-C, urinary LN and urinary PCⅢ were increased, while the expresson levels of miR-27b-3p and miR-342-3p were decreased in the DN group and the MA group (P<0.05). Levels of BUN and Scr were increased in the DN group (P<0.05), and eGFR level decreased (P<0.05). The higher level of urinary PCⅢ was a risk factor for DN, while the higher levels of miR-27b-3p, miR-342-3p and eGFR were protective factors of DN (P<0.05). The expressions levels of miR-27b-3p and miR-342-3p were positively correlated with eGFR (r = 0.647, 0.661, P<0.05) and negatively correlated with urinary PCⅢ (r=-0.739, P<0.05). The area under the curve for diagnosing DN by combining eGFR, urinary PCⅢ, miR-27b-3p and miR-342-3p was higher than that of eGFR, urinary PCⅢ, miR-27b-3p, miR-342-3p alone (Z=5.631, 5.794, 6.715, 4.577, P<0.05). Conclusion The decreased expressions of serum miR-27b-3p and miR-342-3p are associated with decreased renal function and DN occurrence in patients with type 2 diabetes, which can be used as biological indicators for the auxiliary diagnosis of DN.

Key words: diabetic nephropathy, gene expression regulation, diagnosis, differential, miR-27b-3p, miR-342-3p, renal fibrosis

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