Publications by authors named "K Hilpert"

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.

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Tuberculosis (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).

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Article Synopsis
  • The study highlights that culturing Mycobacterium tuberculosis (MTB) remains the best method for diagnosing tuberculosis, but over 40% of samples can't isolate MTB, leaving many infectious cases undetected.
  • Researchers tested two cationic peptides, T14D and TB08L, which can disrupt the mycobacterial membrane, triggering MTB growth and altering its dormant state to a replicative one.
  • The peptides notably improved traditional culture methods, increasing positivity rates by 46% and speeding up results, especially in hard-to-detect sample types like sputum smear-negative and feces.
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Antimicrobial 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.

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The 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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