This review examined a collection of studies regarding the molecular properties of some polyene antibiotic molecules as well as their properties in solution and in particular environmental conditions. We also looked into the proposed mechanism of action of polyenes, where membrane properties play a crucial role. Given the interest in polyene antibiotics as therapeutic agents, we looked into alternative ways of reducing their collateral toxicity, including semi-synthesis of derivatives and new formulations. We follow with studies on the role of membrane structure and, finally, recent developments regarding the most important clinical applications of these compounds.
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http://dx.doi.org/10.3390/membranes12070681 | DOI Listing |
Egypt J Immunol
January 2025
Department of Microbiology and Infection Prevention and Control Unit, Theodor Bilharz Research Institute, Giza 12411, Egypt.
Cryptococcal meningitis is an alarming fungal infection that usually affects the meninges surrounding the brain and spinal cord. The causative organism is Cryptococcus neoformans. Although this infection can occur in normal individuals, it is more often seen in patients with human immunodeficiency virus/acquired immunodeficiency syndrome.
View Article and Find Full Text PDFInt J Nanomedicine
January 2025
Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
Purpose: Multi-walled carbon nanotubes (MWCNTs) were used as carriers for silver nanoparticles (AgNPs). In this process, MWCNTs were coated with mesoporous silica (MWCNT-Silica) for uniform and regular loading of AgNPs on the MWCNTs. In addition, astaxanthin (AST) extract was used as a reducing agent for silver ions to enhance the antioxidant, antibiofilm, and anticancer activities of AgNPs.
View Article and Find Full Text PDFMicrob Cell Fact
January 2025
Chair of Technical Biochemistry, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany.
Background: The biosynthesis of the natural product family of the polycyclic tetramate macrolactams (PoTeMs) employs an uncommon iterative polyketide synthase/non-ribosomal peptide synthetase (iPKS/NRPS). This machinery produces a universal PoTeM biosynthetic precursor that contains a tetramic acid moiety connected to two unsaturated polyene side chains. The enormous structural and hence functional diversity of PoTeMs is enabled by pathway-specific tailoring enzymes, particularly cyclization-catalyzing oxidases that process the polyene chains to form distinct ring systems, and further modifying enzymes.
View Article and Find Full Text PDFJ Med Microbiol
January 2025
Programa de Ps-Graduao em Cincias Farmacuticas, Faculdade de Farmcia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Ocular fungal infections are pathologies of slow progression, occurring mainly in the cornea, but can also affect the entire structure of the eyeball. The main aetiological agents are species of the genera and . Both diagnosis and treatment require speed and effectiveness.
View Article and Find Full Text PDFMicroorganisms
December 2024
Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. Carpio y Plan de Ayala S/N, Mexico City CP 11430, Mexico.
is a genus of Gram-positive bacteria with high GC content. It remains attractive for studying and discovering new antibiotics, antifungals, and chemotherapeutics. genomes can contain more than 30 cryptic and expressed biosynthetic gene clusters (BGC) encoding secondary metabolites.
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