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High prevalence of multidrug resistant and extended-spectrum β-lactamase-producing Escherichia coli and Klebsiella pneumoniae isolated from urinary tract infections in the West region, Cameroon.
BMC Infect Dis
January 2025
Department of Microbiology, Hematology and Immunology, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon.
Background: Antimicrobial resistance remains a worldwide health problem with serious societal and economical repercussions. Multidrug resistant and Extended-Spectrum β-Lactamase producing-Enterobacterales (ESBL-E) are pathogens of critical public health priority that urgently require the research and development of new drugs. This study aims to determine the prevalence and characterize the genes conferring resistance to β-lactams among Escherichia coli and Klebsiella pneumoniae isolated from patients with urinary tract infections (UTIs) in the West region, Cameroon.
View Article and Find Full Text PDFEpigenetic transgenerational inheritance of toxicant exposure-specific non-coding RNA in sperm.
Environ Epigenet
September 2024
Center for Reproductive Biology, School of Biological Sciences, Washington State University, Pullman, WA 99164-4236, United States.
Environmentally induced epigenetic transgenerational inheritance of phenotypic variation and disease susceptibility requires the germ cell (sperm or egg) transmission of integrated epigenetic mechanisms involving DNA methylation, histone modifications, and non-coding RNA (ncRNA) actions. Previous studies have demonstrated that transgenerational exposure and disease-specific differential DNA methylation regions (DMRs) in sperm are observed and that ncRNA-mediated DNA methylation occurs. The current study was designed to determine if transgenerational exposure-specific ncRNAs exist in sperm.
View Article and Find Full Text PDFEffects of the organochlorine pesticide metabolite p,p'-DDE on the gastrointestinal lipidome in fish: A novel toxicity pathway for a legacy pollutant.
Environ Pollut
December 2024
Department of Environmental and Global Health, University of Florida, Gainesville, FL, 32611, USA; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, 32611, USA. Electronic address:
Though phased out from use in the United States, environmental contamination by organochlorine pesticides (OCPs) remains a widespread issue, especially around intensive agricultural regions. OCPs, such as dichlorodiphenyltrichloroethane (DDT) and its primary metabolite, dichlorodiphenyldichloroethylene (DDE), have been detected in soils, sediments, surface waters, and biota decades after their discontinued use. As OCPs are persistent and can bioaccumulate in fats, these compounds can transfer and magnify across food webs.
View Article and Find Full Text PDFLegacy persistent organic pollutants among multiple cetacean species in the Northwest Atlantic.
Sci Total Environ
December 2024
Institute of Environment, Department of Biological Sciences, Florida International University, North Miami, FL 33181, USA.
Article Synopsis
- The study investigates the historical contamination of eastern Canadian shelf waters, particularly focusing on persistent organic pollutants (POPs) like PCBs and organochlorine pesticides in cetaceans from 2015 to 2022.
- It compares the accumulation of these contaminants across six cetacean species and evaluates how their feeding habits and trophic levels affect pollutant concentrations.
- Findings indicate that killer whales show the highest levels of PCBs and OCs, while improvements in pollutant levels have been observed since regulations were enacted, though killer whales still face significant toxicity risks.
Impact of Organochlorine Pesticides Exposure on Histone Modification H3K9ac: Implications for Unexplained Recurrent Miscarriage.
Biochem Genet
August 2024
Applied Cellular and Molecular Research Center, Kerman University of Medical Sciences, Kerman, Iran.
Epigenetic alterations, changes in gene expression without DNA sequence modifications, are associated with various health disorders, including reproductive health issues. These alterations can be influenced by environmental factors such as pesticides. This study aimed to explore the relationship between exposure to Organochlorine Pesticides (OClPs) and the histone modification mark H3K9ac in the placenta and fetal tissue, in the context of unexplained recurrent miscarriage (URM).
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