Abstract
The circulating soluble tumor necrosis factor (sTNF) and sTNF-receptor (R) 1 and -R2 have known as septic biomarker. The pungent component of capsicum, capsaicin (Cap), has several associated physiological activities, including anti-oxidant, anti-bacterial and anti-inflammatory effects. The aim of this study was to elucidate the effect of Cap on circulating sTNF and sTNF-R1 and -R2 in vivo using lipopolysaccharide (LPS)-treated mice. LPS (20 mg/kg, ip)-treated group was significantly increased circulating sTNF, sTNF-R1, and -R2 and TNF-α mRNA expression levels compared to the vehicle group. Treatment with LPS (20 mg/kg, ip) + Cap (4 mg/kg, sc)-treated group was significantly decreased both circulating sTNF levels (after 1 h only) and TNF-α mRNA expression (after 6 h) compared to the LPS-treated group. There is an early increase in circulating sTNF, sTNR-R1, and -R2 observed in the LPS-treated mice. Since Cap inhibits this initial increase as biomarkers, circulating sTNF, it is considered a potent treatment option for TNF-α-related diseases, such as septicemia. In conclusion, Cap interferes with TNF-α mRNA transcription and exerts an inhibiting effect on TNF-α release from macrophages in the early phase after LPS stimulation. Thus, Cap is considered a potent agent for the treatment of TNF-α-related diseases, such as septicemia.
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