نتایج جستجو برای: pyrethroid insecticides

تعداد نتایج: 15273  

Journal: :Insect biochemistry and molecular biology 2011
Yuzhe Du Bhupinder Khambay Ke Dong

Deltamethrin, a pyrethroid insecticide, and BTG 502, an alkylamide insecticide, target voltage-gated sodium channels. Deltamethrin binds to a unique receptor site and causes prolonged opening of sodium channels by inhibiting deactivation and inactivation. Previous (22)Na(+) influx and receptor binding assays using mouse brain synaptoneurosomes showed that BTG 502 antagonized the binding and act...

Journal: :Journal of medical entomology 2014
Ariel Ceferino Toloza Marina S Ascunce David Reed María Inés Picollo

The human head louse, Pediculus humanus capitis De Geer (Phthiraptera: Pediculidae), is an obligate ectoparasite that causes pediculosis capitis and has parasitized humans since the beginning of humankind. Head louse infestations are widespread throughout the world and have been increasing since the early 1990s partially because of ineffective pediculicides. In Argentina, the overuse of product...

Journal: :Environmental toxicology and chemistry 2013
Emily Parry Thomas M Young

Although the freely dissolved form of hydrophobic organic chemicals may best predict aquatic toxicity, differentiating between dissolved and particle-bound forms is challenging at environmentally relevant concentrations for compounds with low toxicity thresholds such as pyrethroid insecticides. The authors investigated the distribution of pyrethroids among 3 forms: freely dissolved, complexed w...

Journal: :Insect biochemistry and molecular biology 2011
Zhaonong Hu Yuzhe Du Yoshiko Nomura Ke Dong

Voltage-gated sodium channels are the primary target of pyrethroid insecticides. Numerous point mutations in sodium channel genes have been identified in pyrethroid-resistant insect species, and many have been confirmed to reduce or abolish sensitivity of channels expressed in Xenopus oocytes to pyrethroids. Recently, several novel mutations were reported in sodium channel genes of pyrethroid-r...

Journal: :Molecular pharmacology 2005
Jianguo Tan Zhiqi Liu Ruiwu Wang Zachary Y Huang Andrew C Chen Michael Gurevitz Ke Dong

The voltage-gated sodium channel is the primary target site of pyrethroids, which constitute a major class of insecticides used worldwide. Pyrethroids prolong the opening of sodium channels by inhibiting deactivation and inactivation. Despite numerous attempts to characterize pyrethroid binding to sodium channels in the past several decades, the molecular determinants of the pyrethroid binding ...

Journal: :Journal of the agricultural chemical society of Japan 1974

Journal: :Pest management science 2005
Emmanouil Roditakis Nikos E Roditakis Anastasia Tsagkarakou

The resistance levels to alpha-cypermethrin, bifenthrin, pirimiphos-methyl, endosulfan and imidacloprid were determined in Bemisia tabaci (Gennadius) from Crete. Five B tabaci populations collected from greenhouse and outdoor crops were bioassayed and compared with a reference susceptible strain. Bemisia tabaci collected in a floriculture greenhouse exhibited the highest resistance against all ...

Journal: :Revista de saude publica 2003
Cleide Fernandes Teixeira Lia Giraldo da Silva Augusto Thais C Morata

OBJECTIVE To examine the peripheral auditory disorders in a group of workers exposed to organophosphate and pyrethroid insecticides, used in vector control campaigns. METHODS The prevalence study examined a population of 98 individuals who sprayed insecticides in campaigns for the prevention of Dengue, Chagas disease and Yellow fever. The sampling approach was finalistic, and included the wor...

Journal: :Postępy Higieny i Medycyny Doświadczalnej 2017

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