Antimicrobial peptides (AMPs) are an essential part of innate immunity. These compounds have been considered as potential therapeutics because of their broad-spectrum activities and proven ability to avoid antimicrobial resistance, but their clinical and commercial developments have some limitations, such as susceptibility to proteases and a high cost of peptide production. To overcome these pr...

The emergence of drug-resistant bacteria has compromised the use of many conventional antibiotics, leading to heightened interest in a variety of antimicrobial peptides. Although these peptides have attractive potential as antibiotics, their size, stability, tissue distribution, and toxicity have hampered attempts to harness these capabilities. To address such issues, we have developed small (m...

Several examples of highly modified antimicrobial peptides have been described. While many such peptides are non-ribosomally synthesized, ribosomally synthesized equivalents are being discovered with increased frequency. Of the latter group, the lantibiotics continue to attract most attention. In the present review, we discuss the implementation of in vivo and in vitro engineering systems to al...

Multidrug-resistant typhoid fever (MDRTF) is a major public health problem in developing countries and is an emerging problem in the developed world. Because of the difficulties in preventing typhoid by public health measures or immunization in developing countries, great reliance is placed on antimicrobial chemotherapy. The treatment should commence as soon as the clinical diagnosis is made ra...

PALETTE OF EXTRAORDINARY COLORS Virtually all multicellular organisms must ward off pathogenic microbes in order to survive and thrive on this planet. To accomplish this, most metazoans rely on geneencoded antimicrobial peptides (AMPs) as an essential part of their innate immune system. The role played by AMPs – and by the other umoral and cellular components of innate immunity – is particularl...

We need new treatment options to control bacterial infections. Bacteria use several strategies resist drug treatment, including modification of the target, and adaptation a different lifestyle, such as intracellular niches within host cells. Drugs that act on diverse targets are less likely induce resistance in bacteria, than current antibiotics acting single molecular target. Antimicrobial pep...

The photostability of the fluoroquinolones ciprofloxacin (CPX), ofloxacin (OFX), and fleroxacin (FLX) toward ultraviolet irradiation (UVA) and room light was investigated in dilute aqueous solutions. A series of photoproducts was observed by high-performance liquid chromatography (HPLC) for all three drugs. As little as 1 h of exposure to room light was enough for the formation of detectable am...

The present review article describes invertebrate venoms and various toxins secreted by them. Animal are stores of novel peptides which exhibit a wide variety biological effects actively interact with pathogen parasites. selectively bind to ion channels receptors display show hemolytic, cytolytic, proteolytic, anti-diabetic, antimicrobial analgesic activity. These generate allergic inflammatory...

Understanding the molecular mechanism of the interaction of amphipathic and antimicrobial peptides with membranes is of fundamental interest, especially because of the potential of amphipathic peptides as therapeutics. The most studied amphipathic peptides in this context are certainly melittin, magainin and alamethicin, of which melittin is the only one to exhibit a powerful hemolytic and ther...