Antimicrobial peptides (AMPs) are promising therapeutic agents for treating antibiotic-resistant bacterial infections. Previous studies showed that magainin 2 (isolated from African clawed fogs ) has antimicrobial activity against gram-positive and gram-negative bacteria. The present study was conducted to investigate the antibacterial activity of magainin 2 against . Magainin 2 showed excellent antibacterial activity against strains and high stability at physiological salt concentrations. This peptide was not cytotoxic towards HaCaT cells and showed no hemolytic activity. Biofilm inhibition and elimination were significantly induced in all strains exposed to magainin 2. We confirmed the mechanism of magainin 2 on the bacterial outer and inner membranes. Collectively, these results suggest that magainin 2 is an effective antimicrobial and antibiofilm agent against strains.
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http://dx.doi.org/10.3390/ijms19103041 | DOI Listing |
<i>Ormocarpum trichocarpum</i> (Taub.) Engl. is a shrub or small tree harvested from the wild as a source of food, traditional medicines and wood.
View Article and Find Full Text PDFPest Manag Sci
December 2024
School of Pharmacy, Lanzhou University, Lanzhou, China.
Background: Plant diseases caused by plant pathogens pose a great threat to biodiversity and food security, and the problem of drug resistance caused by traditional antibiotics and fungicides is becoming more and more serious. It is urgent to develop new antibacterial molecules with low toxicity and high efficiency. Marinoquinoline A is an alkaloid isolated from marine actinomycetes and has a variety of pharmacological activities.
View Article and Find Full Text PDFBMC Microbiol
December 2024
Department of Clinical Laboratory, Shanghai Eighth People's Hospital, No.8 Caobao Road, Xuhui District, Shanghai, 200235, P.R. China.
Background: Methicillin-resistant Staphylococcus aureus (MRSA) is a significant public health problem. This study investigated the antimicrobial properties and mechanisms of berberine (BBR), a plant alkaloid, against MRSA, evaluating its potential to enhance antibiotic therapy.
Results: Berberine only demonstrated variable but significant inhibitory effects on 50 clinical MRSA strains.
J Egypt Natl Canc Inst
December 2024
Department of Community Medicine, Vinayaka Mission's Homoeopathic Medical College and Hospital, Vinayaka Mission's Research Foundation (DU), Salem, India.
Green synthesis techniques have drawn a lot of interest lately since they are beneficial to the environment and have potential uses in a variety of industries, including biomedicine. Because of their special physicochemical characteristics, copper nanoparticles (CuNPs) have become one of the most interesting options for use in biological applications among nanomaterials. An overview of green synthesis methods for CuNPs is given in this review, along with a discussion of their applications in cancer therapeutics.
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December 2024
Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada.
Continued efforts to discover new antibacterial molecules are critical to achieve a robust pre-clinical pipeline for new antibiotics. Screening of compound or natural product extract libraries remains a widespread approach and can benefit from the development of whole cell assays that are robust, simple and versatile, and allow for high throughput testing of antibacterial activity. In this study, we created and validated two bioluminescent reporter strains for high-throughput screening, one in Pseudomonas aeruginosa, and another in a hyperporinated and efflux-deficient Escherichia coli.
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