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Association of N, N-diethyl-m-toluamide (DEET) with arthritis among adult participants.
PLoS One
December 2024
Department of General Medicine, Beijing TianTan Hospital, Capital Medical University, Beijing, China.
Background: N, N-diethyl-m-toluamide (DEET), an active ingredient prevalent in insect repellents, has its effects on human health under ongoing debate and scrutiny.
Objective: This study aimed to investigate the association between exposure to DEET and arthritis outcomes within the broader adult demographic, leveraging data obtained from the National Health and Nutrition Examination Survey (NHANES).
Methods: 3-diethyl-carbamoyl benzoic acid (DCBA) was used as a specific indicator of DEET exposure.
Non-targeted analysis and suspect screening of organic contaminants in temperate snowfall using liquid chromatography high-resolution mass spectrometry.
Environ Res
November 2024
The College of Wooster, Department of Chemistry, 943 College Mall, Wooster, OH, 44691, USA; Goucher College, Department of Chemistry, 1021 Dulaney Valley Rd, Baltimore, MD, 21204, USA. Electronic address:
Contaminants released into the atmosphere that undergo regional and long-range transport can deposit back to Earth through snowfall. When snow melts, these contaminants re-enter the environment, sometimes far from their original emission sources. Here we present the first comprehensive characterization of organic contaminants in snow from North America.
View Article and Find Full Text PDFEvaluating the repellent effects of major essential oil components (Lamiaceae) on brown dog tick Rhipicephalus sanguineus sensu lato) using the larval repellent activity test.
Vet Parasitol
January 2025
Faculty of Science, Department of Biology, Akdeniz University, Antalya, Türkiye. Electronic address:
Article Synopsis
- * Carvacrol and geraniol showed strong repellent properties, with carvacrol's effectiveness comparable to DEET at specific concentrations and times.
- * The findings suggest that plant-derived compounds could serve as safer alternatives to synthetic tick repellents and have potential for development into effective biocidal products.
Insecticidal and Repellent Activity of Essential Oil and Its Pure Compounds Against Imported Fire Ants (Hymenoptera: Formicidae).
Molecules
November 2024
National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
Kunth (Piperaceae) essential oil (EO) was evaluated for its toxicity and repellency against red imported fire ants (RIFA), Buren, and a hybrid (HIFA) of red ( and black ( Forel) imported fire ants. Through bioactivity-guided fractionation, two major components, elemicin and myristicin, were isolated from the EO. Removal of treated sand in a digging bioassay was used as the criterion for repellency.
View Article and Find Full Text PDFToxicity and Repellency of (/)-3-Butylidenephthalide: A Natural Compound Isolated from Root Extract Evaluated Against Imported Fire Ants (Hymenoptera: Formicidae).
Insects
October 2024
National Center for Natural Products Research, The University of Mississippi, Oxford, MS 38677, USA.
Imported fire ants are pests of significant importance, especially in the southern United States. We tested (/)-3-butylidenephthalide, a natural compound that was isolated from the ethanolic extract of roots, as a repellent and toxicant against workers of imported fire ants. A series of serial concentrations, starting from 156 µg/g until failure, were tested using digging bioassays.
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