Clinical significance of miR-129-5p in patients with neonatal sepsis and its regulatory role in the LPS-induced inflammatory response

  • Meng Li Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, Shandong, China
  • Xiaoyang Huang Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, Shandong, China
  • Qingcui Zhuo Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, Shandong, China
  • Jinghui Zhang Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, Shandong, China
  • Xiuli Ju Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, Shandong, China https://orcid.org/0000-0002-5588-1445
Keywords: Neonatal sepsis, miR-129-5p, diagnosis, inflammatory response

Abstract

Neonatal sepsis (NS) occurs in neonates within 28 days, especially preterm infants. The dysregulation of miRNAs is widely detected in NS. The study investigated the expression changes and clinical significance of miR-129-5p in NS patients and further explored the regulatory role of miR-129-5p in the LPS-induced inflammatory response in monocytes. A total of 75 neonates with NS and 84 neonates without NS were recruited. qRT-PCR was used for the measurement of miR-129-5p expression. The receiver operating characteristic (ROC) curve was constructed for diagnostic value analysis. ELISA was used to detect the concentration of inflammatory cytokines. Monocytes were isolated from the blood of neonates to investigate the role of miR-129-5p in the LPS-induced inflammatory response in vitro. miR-129-5p was low expressed in the serum of NS cases compared with controls. Serum miR-129-5p had a diagnostic value for NS with a sensitivity of 82.7% and specificity of 79.8%. There was close association for serum miR-129-5p with TNF-α (r = -0.652, p < 0.001) and IL-8 (r = -0.700, p < 0.001) levels in NS patients. Overexpression of miR-129-5p reversed the increasing trend of TNF-α and IL-8 induced by LPS, whereas miR-129-5p downregulation aggravated the increase of TNF-α and IL-8 induced by LPS in monocytes. MiR-129-5p was downregulated in the serum of NS patients, and it might be a promising biomarker for disease diagnosis. Overexpression of miR-129-5p alleviated the inflammatory response of NS.

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Clinical significance of miR-129-5p in patients with neonatal sepsis and its regulatory role in the LPS-induced inflammatory response
Published
2020-12-29
How to Cite
1.
Li M, Huang X, Zhuo Q, Zhang J, Ju X. Clinical significance of miR-129-5p in patients with neonatal sepsis and its regulatory role in the LPS-induced inflammatory response. Bosn J of Basic Med Sci [Internet]. 2020Dec.29 [cited 2021Jul.31];. Available from: https://www.bjbms.org/ojs/index.php/bjbms/article/view/5184
Section
Molecular Biology