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A MOF nanozyme-mediated acetylcholinesterase-free colorimetric strategy for direct detection of organophosphorus pesticides.
Chem Commun (Camb)
January 2024
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China.
Although some simple and rapid colorimetric methods have been developed to detect organophosphorus pesticides (OPs), the difficult extraction and easy denaturation of acetylcholinesterase (AChE) are still drawbacks needing to be overcome. Here, we propose a MOF nanozyme-mediated AChE-free colorimetric strategy for the direct detection of OPs. In the presence of OPs (pirimiphos-methyl as a model), the intense blue of oxidized 3,3',5,5'-tetramethylbenzidine (TMB) becomes light due to the quenching effect of OPs towards hydroxyl radicals (˙OH) that are generated by the decomposition of HO catalyzed by the CuCo ZIF nanozyme with excellent peroxidase (POD)-like activity.
View Article and Find Full Text PDFSub-Lethal Effects of Pirimiphos-Methyl Are Expressed to Different Levels in Wings of Three Stored-Product Coleopterans: A Geometric Morphometrics Investigation.
Insects
April 2023
Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia.
L. (Coleoptera: Tenebrionidae), (Horn), and (F.) (Coleoptera: Bostrychidae) are noxious insect pests of grains in storages.
View Article and Find Full Text PDFInsecticide resistance profiles in malaria vector populations from Sud-Kivu in the Democratic Republic of the Congo.
Trans R Soc Trop Med Hyg
November 2021
Centre de Recherche en Sciences Naturelles de Lwiro (CRSN/Lwiro), Bukavu, Sud-Kivu, DRC.
Background: Insecticide resistance has become a widespread problem causing a decline in the effectiveness of vector control tools in sub-Saharan Africa. In this situation, ongoing monitoring of vector susceptibility to insecticides is encouraged by the WHO to guide national malaria control programmes. Our study was conducted from April to November 2018 in Tchonka (Sud-Kivu, Democratic Republic of the Congo) and reported primary data on the resistance status of Anopheles funestus and Anopheles gambiae.
View Article and Find Full Text PDFMicroplastics and their associated organic pollutants from the coastal waters of the central Adriatic Sea (Italy): Investigation of adipogenic effects in vitro.
Chemosphere
January 2021
School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, MC, Italy. Electronic address:
Article Synopsis
- The study investigates the prevalence and characteristics of microplastic pollution in the Central Adriatic Sea, finding the highest concentration of microplastics in offshore areas, primarily as fragments.
- The research reveals that various harmful chemicals, including PCBs, PAHs, and pesticides, are associated with these microplastics, with higher concentrations typically found in inshore waters.
- Laboratory tests on preadipocyte cells indicate that the extracts from microplastics may promote fat cell formation and storage, suggesting potential health risks associated with microplastic pollution.
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