C5a is an anaphylatoxin protein produced by the cleavage of the complement system's component C5 protein. It signals through the G-protein-coupled receptor C5a receptor 1 (C5aR1) to induce the chemotaxis of primarily neutrophils and monocytes and the release of inflammatory molecules. A large body of evidence linking C5aR1 signaling to acute and chronic inflammatory disorders has triggered interest in developing potent C5aR antagonists.
View Article and Find Full Text PDFTuberculosis (TB) caused by remains a predominant cause of mortality, especially in low- and middle-income nations. Recently, antimicrobial peptides have been discovered that at low concentrations could stimulate the growth of (hormetic response). In this study, such a peptide was used to investigate the effects on the time to positivity (TTP).
View Article and Find Full Text PDFAntimicrobial peptides (AMPs) can directly kill Gram-positive bacteria, Gram-negative bacteria, mycobacteria, fungi, enveloped viruses, and parasites. At sublethal concentrations, some AMPs and also conventional antibiotics can stimulate bacterial response increasing their resilience, also called the hormetic response. This includes stimulation of growth, mobility, and biofilm production.
View Article and Find Full Text PDFThe opportunistic yeast is the most common cause of candidiasis. With only four classes of antifungal drugs on the market, resistance is becoming a problem in the treatment of fungal infections, especially in immunocompromised patients. The development of novel antifungal drugs with different modes of action is urgent.
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