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Article

Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response

  • Authors:
    • Guozhi Liu
    • Wei Liu
    • Jie Guo
  • View Affiliations / Copyright

    Affiliations: Department of Neonatology, Yidu Central Hospital of Weifang, Weifang, Shandong 262500, P.R. China
  • Pages: 1977-1983
    |
    Published online on: January 2, 2020
       https://doi.org/10.3892/etm.2020.8408
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Abstract

Neonatal sepsis (NS) poses a serious threat to the health of neonates worldwide. The present study aimed to investigate the diagnostic value of microRNA (miR)‑181a in patients with NS and the regulatory role of miR‑181a in lipopolysaccharide (LPS)‑induced inflammation. A total of 102 neonates with NS and 50 neonates without sepsis were enrolled in the present study. The serum levels of miR‑181a were estimated using reverse transcription‑quantitative PCR. Receiver operating characteristic (ROC) analysis was performed to evaluate the diagnostic value of miR‑181a for NS. The effect of miR‑181a on the expression of Toll‑like receptor (TLR)4 was assessed after modification of the expression of miR‑181a in monocytes isolated from the blood of neonates in vitro. An ELISA was used to measure the concentration of inflammatory cytokines tumor necrosis factor (TNF)‑α and interleukin (IL)‑8 in the supernatant of monocytes. The serum levels of miR‑181a were decreased in patients with NS compared with those in the controls. The area under the ROC curve of miR‑181a was 0.893 with a sensitivity of 83.3% and a specificity of 84.0%. LPS stimulation in monocytes also led to a decrease in the expression of miR‑181a. TLR4 was proven to be a direct target gene of miR‑181a, according to the results of a luciferase reporter assay, and overexpression of miR‑181a suppressed TLR4 expression in monocytes. Regarding LPS‑induced inflammation, it was revealed that the upregulated levels of TNF‑α and IL‑8 induced by LPS were reduced by overexpression of miR‑181a in monocytes. In conclusion, decreased serum levels of miR‑181a may serve as a diagnostic biomarker in patients with NS and overexpression of miR‑181a inhibits the LPS‑induced inflammatory response at least partially by targeting TLR4. Aberrant miR‑181a may be a non‑invasive biomarker for NS patients, and provide a novel insight into the pathologic mechanisms of action behind the development of NS.
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Copy and paste a formatted citation
Spandidos Publications style
Liu G, Liu W and Guo J: Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response. Exp Ther Med 19: 1977-1983, 2020.
APA
Liu, G., Liu, W., & Guo, J. (2020). Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response. Experimental and Therapeutic Medicine, 19, 1977-1983. https://doi.org/10.3892/etm.2020.8408
MLA
Liu, G., Liu, W., Guo, J."Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response". Experimental and Therapeutic Medicine 19.3 (2020): 1977-1983.
Chicago
Liu, G., Liu, W., Guo, J."Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response". Experimental and Therapeutic Medicine 19, no. 3 (2020): 1977-1983. https://doi.org/10.3892/etm.2020.8408
Copy and paste a formatted citation
x
Spandidos Publications style
Liu G, Liu W and Guo J: Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response. Exp Ther Med 19: 1977-1983, 2020.
APA
Liu, G., Liu, W., & Guo, J. (2020). Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response. Experimental and Therapeutic Medicine, 19, 1977-1983. https://doi.org/10.3892/etm.2020.8408
MLA
Liu, G., Liu, W., Guo, J."Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response". Experimental and Therapeutic Medicine 19.3 (2020): 1977-1983.
Chicago
Liu, G., Liu, W., Guo, J."Clinical significance of miR‑181a in patients with neonatal sepsis and its regulatory role in the lipopolysaccharide‑induced inflammatory response". Experimental and Therapeutic Medicine 19, no. 3 (2020): 1977-1983. https://doi.org/10.3892/etm.2020.8408
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