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Clinical Significance of microRNA-146a in Patients with Ulcerative Colitis

Juan Feng1, Yunyan Zhu2, Liang Chen1

  • 1Department of Gastroenterology, Nantong Hospital of Traditional Chinese Medicine, Nantong, China.

Annals of Clinical and Laboratory Science
|August 23, 2020
PubMed
Abstract

Insights

MicroRNA-146a levels are lower in ulcerative colitis (UC) patients, especially in severe cases. Lower miRNA-146a correlates with increased inflammation and UC severity.

Area of Science:

  • Gastroenterology
  • Molecular Biology
  • Immunology

Background:

  • Ulcerative colitis (UC) is a chronic inflammatory bowel disease.
  • MicroRNAs play crucial roles in regulating gene expression and cellular processes.
  • Understanding molecular markers like microRNA-146a is vital for UC management.

Purpose of the Study:

  • To investigate the clinical significance of microRNA-146a (miRNA-146a) in patients with ulcerative colitis (UC).
  • To assess the correlation between miRNA-146a expression and UC disease activity and inflammatory markers.

Main Methods:

  • A prospective observational study involving 312 UC patients.
  • Assessment of UC severity using Sutherland Disease Activity Index (DAI), clinical activity index, and endoscopic index.
  • Quantification of serum inflammatory markers (NF-κB, CRP, IL-1β, IL-6, TNF-α) via ELISA and miRNA-146a expression via RT-qPCR.

Main Results:

  • miRNA-146a expression was significantly lower in UC patients compared to healthy controls, with the lowest levels in severe UC.
  • Lower miRNA-146a levels were negatively correlated with serum inflammatory markers (NF-κB, CRP, IL-1β, IL-6, TNF-α).
  • Patients with lower miRNA-146a exhibited higher UC severity scores (DAI, clinical, endoscopic) and elevated inflammatory markers.

Conclusions:

  • MicroRNA-146a is down-regulated in ulcerative colitis patients.
  • Decreased miRNA-146a expression is associated with increased systemic inflammation and disease severity in UC.
  • miRNA-146a may serve as a potential biomarker for UC activity and progression.
Keywords:
HMGB1NLRP3ulcerative colitis

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