Acetylcholinesterase resistance has been well documented in many insects, including several mosquito species. We tested the resistance of five wild, Chinese strains of the mosquito Culex pipiens quinquefasciatus to two kinds of pesticides, dichlorvos and propoxur. An acetylcholinesterase gene (ace1) was cloned and sequenced from a pooled sample of mosquitoes from these five strains and the amin...

Organophosphorus (OP) pesticides poison more than 3,000,000 people every year in the developing world, mostly through intentional self-poisoning. Advances in medical therapy for OP poisoning have lagged, and current treatment is not highly effective with mortality of up to 40% in even the most advanced Western medical facilities. Administration of a broadly active bacterial OP hydrolase to pati...

Common carp (Cyprinus carpio) is an important aquaculture species. However, their production and health sometimes threatened by pesticides. In common carp, extensive studies have been done for exposures of single pesticides, but effects mixtures such as those the commonly used chlorpyrifos dichlorvos, are still unknown this first phase work, acute lethal exposure experiment was conducted to est...

th th Abstract: Snails Lymnaea accuminata, were exposed to 1.4 mg/l (1/10 of 96 hrLC50) and 2.8 mg/l(1/5 of 96hr LC50) of insecticide Dichlorvos. Initially at 24 hours, at both the concentrations Increase in respiratory rate is noted. At 48 hours stage, increase in respiratory rate is noticed at both the sublethal concentrations. At 72 hours stage in both the sublethal concentrations reduction ...

Insecticide resistance has been known to be prevalent in several insect species including mosquito. It has become a major problem in vector control programme due to pesticide resistance through detoxification enzymes. The present study investigated the toxicity of Ae. aegypti to organophosphates and pyrethroid insecticide and biochemical mechanisms involved in insecticide resistance in larval p...

The paper presents the results of studies on selecting a solid sorption material for absorbing liquid crop protection agents which permeate samples of protective clothing fabrics. The sorption materials were investigated and selected with an assumption that they should have a high recovery coefficient for biologically active substances, used as active ingredients in crop protection agents, at a...

Abstract The present work deals with the synthesis of biodegradable hydrogel a natural polysaccharide aloe vera and vinyl monomer acrylic acid. In this synthesis, ammonium persulfate–glutaraldehyde was used as initiator-cross-linker system, acid backbone. Grafting confirmed by different techniques like SEM, FT-IR, XRD EDS. Maximum percentage swelling synthesized found to be 756%. Biodegradation...

introduction drug-induced liver injury is a frequent cause of hepatic dysfunction. several drugs have been identified to cause autoimmune hepatitis (aih). environmental chemicals are capable of triggering a certain degree of liver injury. however, toxin induced aih is rare. conclusions chronic (long-term) exposures to dichlorvos can lead to aih. a detailed inquiry of medical history and liver b...

a 'worst case' laboratory method was employed for evaluating total effect of four pesticides (imidacloprid, dichlorvos, pymetrozine and abamectin) on the nymphs mortality and adults reproduction in orius albidipennis reuter (hemiptera: anthocoridae). the bioassays were carried out in laboratory using drum cell method, under controlled conditions of: 27±1?c, rh of 65±5% and 16-h photo ...