The Anti-Inflammatory Role of Bilirubin on "Two-Hit" Sepsis Animal Model.

International Journal of Molecular Sciences
Duc Tin TranSang Hyun Kwak

Abstract

Bilirubin is a product of the heme catabolism pathway, and it is excreted in bile and removed from the body through the urine. Bilirubin has potent antioxidant properties but also plays a role in anti-inflammation by protecting the body against endotoxin-induced lung inflammation, down-regulating the expression of adhesion molecules, and inhibiting the infiltration of inflammatory cells. Thus, bilirubin is a promising agent that could use in inflammation disease treatment. The application of bilirubin on the "two-hit" sepsis animal model has been, to date, unknown. we used lipopolysaccharide to induce initial insults in C57BL/6 mice. After 24 h, mice underwent cecal ligation and puncture to induce the "two-hit" sepsis model. Next, mice were administered 30 mg/kg bilirubin and we observed an improvement. We observed that bilirubin inhibited the expression of pro-inflammatory cytokines, while the levels of anti-inflammatory cytokines were significantly augmented in the lung. Bilirubin improved the survival rate in the sepsis model. Furthermore, we suggest that bilirubin can modulate the accumulation of T-regulatory cells and myeloid-derived suppressor cells. Notably, bilirubin suppressed the activation and functions of T-cells. T...Continue Reading

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Citations

Mar 9, 2021·Frontiers in Cardiovascular Medicine·Hayder M Al-KuraishyGaber El-Saber Batiha

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Methods Mentioned

BETA
ELISA
protein assay
FACS

Software Mentioned

SPSS

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