We evaluated the activities of several macrolide antibiotics against M. leprae infections in mouse footpads. Erythromycin and azithromycin were inactive, while both roxithromycin and clarithromycin were found to be consistently active and, in fact, bactericidal. By both methods, clarithromycin was found to be superior to roxithromycin, a finding which, at least in part, may be a consequence of the higher levels of clarithromycin at the site of infection.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC245094 | PMC |
http://dx.doi.org/10.1128/AAC.35.4.760 | DOI Listing |
Nat Prod Res
January 2025
Department of Pharmacology and Mays Cancer Center, University of Texas Health Science Center, San Antonio, Texas, USA.
During our efforts to identify biologically active compounds from Red Sea marine invertebrates, a new compound, latrunculin U (), was identified from the Red Sea sponge along with latrunculins A (), B (), and 16--latrunculin B (). The structures of the latrunculins were elucidated based on a combination of comprehensive 1D and 2D NMR analyses and high-resolution mass spectral determinations. The antiproliferative potency of each compound in HeLa cells was evaluated, and they had IC values ranging from 0.
View Article and Find Full Text PDFEnviron Res
January 2025
INRAE, University of Montpellier, LBE, Av. des Étangs, 11100 Narbonne, France.
Clarithromycin, a common antibiotic found in domestic wastewater, persists even after treatment and can transfer to soils when treated wastewater (TWW) is used for irrigation. This residual antibiotic may exert selection pressure, promoting the spread of antibiotic resistance. While Predicted No Effect Concentrations (PNECs) are used in liquid media to predict resistance risks, PNEC values for soils, especially for clarithromycin, are lacking.
View Article and Find Full Text PDFEnviron Pollut
January 2025
Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
Airborne microorganisms in hospitals present significant health risks to both patients and employees. However, their pollution profiles and associated hazards in different hospital areas remained largely unknown during the extensive use of masks and disinfectants. This study investigated the characteristics of bioaerosols in an urban general hospital during the COVID-19 pandemic and found that airborne bacteria and fungi concentrations range from 87±35 to 1037±275 CFU/m and 21±15 to 561±132 CFU/m, respectively, with the outpatient clinic and internal medicine ward showing the highest levels.
View Article and Find Full Text PDFMolecules
January 2025
Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro, 53100 Siena, Italy.
Green chemistry principles are pivotal in driving sustainable and innovative solutions to global health challenges. This study explores a hydroalcoholic extract from (chestnut) burrs, an underutilized natural resource, as a potent source of antimicrobial compounds against (). The extract demonstrated significant bactericidal activity, synergizing effectively with clarithromycin and showing additive effects with metronidazole.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Cancer Biotherapeutics Research Group, Life Sciences Institute, School of Biotechnology, Dublin City University, Dublin 9, D09 NR58 Dublin, Ireland.
HER2-positive/oestrogen receptor-positive (HER2+/ER+) represents a unique breast cancer subtype. The use of individual HER2- or ER-targeting agents can lead to the acquisition of therapeutic resistance due to compensatory receptor crosstalk. New drug combinations targeting HER2 and ER could improve outcomes for patients with HER2+/ER+ breast cancer.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!