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MiRNA-200b level in peripheral blood predicts renal interstitial injury in patients with diabetic nephropathy

Tingfang Chen1, Zhenzhen Jiang1, Haiying Zhang1

  • 1Shanghai Sixth Peopležs Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Department of Nephrology, Shanghai, China.

Journal of Medical Biochemistry
|March 29, 2023
PubMed
Abstract

Insights

Peripheral blood microRNA-200b (miRNA-200b) shows diagnostic potential for diabetic nephropathy (DN) and renal interstitial injury. Elevated miRNA-200b levels correlate with DN severity, suggesting its role as a predictive biomarker.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Biomarker Discovery

Background:

  • Diabetic nephropathy (DN) poses a significant health challenge, characterized by progressive renal interstitial injury.
  • Current diagnostic methods for DN may not fully capture the extent of renal damage.
  • Identifying novel biomarkers for early detection and monitoring of DN is crucial.

Purpose of the Study:

  • To investigate the diagnostic value of peripheral blood microRNA-200b (miRNA-200b) in patients with diabetic nephropathy (DN).
  • To assess the correlation between miRNA-200b levels and the degree of renal interstitial injury in DN.
  • To evaluate miRNA-200b as a potential predictive biomarker for DN development.

Main Methods:

  • Peripheral blood samples were collected from healthy subjects and patients with diabetes, mild DN, and moderate-severe DN.
  • MicroRNA-200b levels were quantified using reverse transcriptase-polymerase chain reaction (RT-PCR).
  • Renal function and fibrosis indicators were measured using ELISA and chemiluminescent immunoassay, respectively.
  • Receiver operating characteristic (ROC) curves were employed to assess diagnostic potential.

Main Results:

  • Peripheral blood miRNA-200b levels were significantly higher in DN patients compared to diabetes patients without complications, particularly in moderate-severe DN.
  • miRNA-200b levels showed a negative correlation with key renal function markers (serum creatinine, urinary nitrogen, cystatin) and fibrosis indicators (TGF-β, CIV, PCIII).
  • ROC curve analysis confirmed the diagnostic utility of miRNA-200b for both mild and moderate-severe DN.

Conclusions:

  • Peripheral blood miRNA-200b levels are closely associated with the severity of renal interstitial injury in DN patients.
  • miRNA-200b demonstrates significant potential as a diagnostic and predictive biomarker for diabetic nephropathy.
  • Further research may establish miRNA-200b as a valuable tool in managing DN.
Keywords:
DNMiRNA-200brenal interstitial injury

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