Suicidal poisoning by ingestion of organophosphate (OP) insecticides represents a serious emergency with a high mortality rate. However, attempted suicide via the parenteral route has rarely been reported. The present study reports a case of parasuicide by self-injection of an organophosphorus insecticide (phoxim, phenylglyoxylonitrile oxime O,O-diethyl phosphorothioate) into the distal region ...

Pyrethroid and organophosphate pesticides are two of the most commonly used classes insecticide worldwide. At sublethal concentrations, permethrin (a pyrethroid) chlorpyrifos (an organophosphate) impact behavior in model fish species. We investigated behavioral effects environmentally relevant concentrations or on early larval delta smelt Hypomesus transpacificus , a Critically Endangered teleo...

A 51 year old man developed progressive cranial and proximal muscle weakness, hyperreflexia and mental change. The disorder progressed over 9 days following the fifth weekly spraying with the organophosphate (OP) insecticide, phosmet, with limited symptoms of acute toxicity. Marked decremental responses of 50-80% on slow and fast rates of stimulation were improved to 15% by edrophonium or neost...

The dynamics of genetic variation in susceptibility to insecticides within a natural population of Drosophila melanogaster (Meigen) at Katsunuma (Yamanashi Prefecture, Japan) was examined. Two resistance factors for three organophosphate insecticides (OPs), a resistant-type acetylcholinesterase (AChE) and a cytochrome P450 monooxygenase (cytochrome P450), have already been suggested to be invol...

This work describes the development of a new biosensor for the detection of an organophosphate insecticide (Diazinon) in an aqueous medium. The method is based up on the immobilization of Candida Rugosa Lipase enzyme by adsorption on Aluminosilicate in order to incorporate it into a polymeric membrane. The electrical properties of the polymeric membrane have been characterized by electrochemica...

OBJECTIVE Prenatal exposure to organophosphate pesticides can lead to developmental neurotoxicity. A longitudinal birth cohort was established to investigate pesticide exposures from different agricultural activities. Maternal urinary organophosphate metabolites were measured at 28 weeks of pregnancy (n=86), delivery (n=67) and 2 months postpartum (n=51). METHOD Subjects were interviewed with...

Bioassays of Lacanobia subjuncta (Grote and Robinson) larvae established baseline LC50 values and identified the potential of reduced-risk, organophosphate replacement and naturally derived insecticides (eg chloronicotinyls, spinosyns, oxadiazines, insect growth regulators, microbial insecticides and particle films) to control this pest. The toxicities of these products were compared with those...

This study assessed the viability of using planted, mature rice fields in mitigating diazinon (an organophosphate insecticide) runoff toxicity using aqueous 48 h Hyalella azteca whole effluent toxicity bioassays. Rice fields decreased diazinon concentrations 80.1%-99.9% compared with 10.8% in the unvegetated field control. H. azteca survival responses coincided with observed diazinon concentrat...

J. Econ. Enlomol. 79: 1613-1616 (1986) ABSTRACT Blattella germanica (L.) males succumbed to two consecutive sublethal doses of hydramethylnon (an amidinohydrazone) spaced up to 6 days apart. The same effect was not observed with a carbamate (propoxur) or organophosphate (chlorpyrifos) insecticide. Radiotracer analysis revealed presence of HCresidues inside cockroaches for at least 21 days follo...