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Chlorine-substituted transformation products generated during chlorination of the organophosphorus insecticide disulfoton induce anti-acetylcholine esterase activity.
Chemosphere
January 2025
Faculty of Engineering, Hokkaido University, N13W8, Sapporo, 060-8628, Japan. Electronic address:
Global concern regarding transformation products (TPs) derived from contaminants, including pesticides, in the environment and during water treatment has been growing markedly. In the present study, we investigated the anti-acetylcholinesterase (AChE) activity of an aqueous solution of the organophosphorus insecticide disulfoton, a toxicological endpoint for determining the acceptable daily intake of disulfoton, both in the presence and the absence of metabolism during chlorination. Disulfoton rapidly reacted with free chlorine and completely disappeared within 0.
View Article and Find Full Text PDFPhotothermal Desorption and Reagent-Assisted Low-Temperature Plasma Ionization Miniature IT-MS/MS for On-Site Analysis of Illicit Drugs in Saliva and Urine.
Anal Chem
January 2025
Environment Research Institute, Shandong University, Qingdao 266237, China.
Globally, drug-impaired driving fatalities now exceed those from drunk driving, urging the need for on-site and roadside detection methods. In this study, a photothermal desorption and reagent-assisted low-temperature plasma ionization miniature ion trap mass spectrometer (PDRA-LTP-ITMS) was developed for on-site detection of drug-impaired driving. The pseudomultiple reaction monitoring (MRM) in PDRA-LTP-ITMS enables continuous ion selection during ion introduction and improved sensitivity to nearly 3-fold compared with the conventional full scan mode.
View Article and Find Full Text PDFNear-Native Imaging of Metal Ion-Initiated Cell State Transition.
ACS Nano
January 2025
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China.
Metal ions are indispensable to life, as they can serve as essential enzyme cofactors to drive fundamental biochemical reactions, yet paradoxically, excess is highly toxic. Higher-order cells have evolved functionally distinct organelles that separate and coordinate sophisticated biochemical processes to maintain cellular homeostasis upon metal ion stimuli. Here, we uncover the remodeling of subcellular architecture and organellar interactome in yeast initiated by several metal ion stimulations, relying on near-native three-dimensional imaging, cryo-soft X-ray tomography.
View Article and Find Full Text PDFEpidemiologic Investigation of Protozoa and Soil-Transmitted Helminths in Starr County, Texas.
Am J Trop Med Hyg
January 2025
Department of Pediatrics, National School of Tropical Medicine, Section of Tropical Medicine, Baylor College of Medicine, Houston, Texas.
The burden of pathogenic enteric protozoa and soil-transmitted helminths among impoverished populations living on the Texas-Mexico border is unclear. We conducted a cross-sectional study on an ongoing longitudinal cohort of 616 adults residing in Starr County, Texas. A total of 359 adults were screened for four protozoa and five soil-transmitted helminths by using real-time polymerase chain reaction.
View Article and Find Full Text PDFInfluence of Enterocytozoon bieneusi Infection on Child Growth: A Secondary Analysis of the MAL-ED Birth Cohort Study.
Am J Trop Med Hyg
January 2025
Nutrition Research Division, icddr,b, Dhaka, Bangladesh.
Malnutrition in the early days of life is a global public health concern that affects children's growth. It results from a variety of factors, including pathogenic infections. Enterocytozoon bieneusi is a microsporidian parasite that can cause diarrhea and malnutrition in children.
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