Critical care medicine
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Critical care medicine · Jan 2014
Melatonin Receptors Mediate Improvements of Survival in a Model of Polymicrobial Sepsis.
Melatonin has been demonstrated to improve survival after experimental sepsis via antioxidant effects. Yet, recent evidence suggests that this protective capacity may also rely on melatonin receptor activation. Therefore, the present study was designed to investigate whether selective melatonin receptor-agonist ramelteon may influence survival and immune response in a model of polymicrobial sepsis in rats, wild-type and melatonin receptor MT1/MT2 double knockout mice. ⋯ Melatonin receptors mediate improvements of survival after polymicrobial sepsis in rats and mice; this effect appears to be independent from major alterations of cytokine release.