tetranychus urticae koch is an important and destructive pest of crops, fruits and ornamental plants in worldwide. the high fecundity of t. urticae and its abruptly life span as well as the extensive application of acaricides for keeping t. urticae damages below economic injury level, caused to resistance to acaricides and control failures. in this research the fumigant activity of essential oi...

Naphthyl esterase and platelet-activating factor (PAF)-acetylhydrolase activities were detected in the salivary glands of the cat flea, Ctenocephalides felis. Salivary naphthyl esterase activity is disgorged during exploratory probing. Whole extracts of salivary glands contain esterase activity against the short-chain naphthyl esters alpha-naphthyl acetate (approximately 210pmol/min/gland pair;...

Studies on an esterase derived from partially purified preparations of the first component of complement are described. The esterase hydrolyzed certain synthetic amino acid esters, among which N-acetyl-L-tyrosine ethyl ester was most susceptible. This was hydrolyzed maximally between pH 7.5 and 8.2, and at 41 degrees C. The esterase could not be identified with other previously described hydrol...

The genetic basis of esterase polymorphism in Heterodera glycines was investigated through controlled matings and analysis of F and F progeny. Three nematode lines, each fixed for a different esterase phenotype, were isolated and purified through repeated directional selection and inbreeding. Each phenotype was characterized by its distinct pair of closely spaced bands of esterase activity. Sin...

cotton whitefly, bemisia tabaci gennadius (homoptera: aleyrodidae) is one of the most seriously damaging insect pests of agricultural products worldwide. it is highly polyphagous, damaging a broad range of food as well as non-food crops through direct feeding, excretion of honeydew and transmission of over 100 plant viruses. in iran, growers usually use insecticides as the main control agent of...

Background and Purpose: Annually affecting millions of women, vulvovaginal candidiasis (VVC) is commonly described by signs and symptoms of vulvovaginal inflammation in the presence of Candida species. Today, the detection of the virulence factors plays a major role in the understanding of pathogenesis of candidiasis and helps produce new anticandidial drugs to improve its treatment efficiency....

Exposure of bovine pulmonary-arterial endothelial cells to the oxidant lipid t-butyl hydroperoxide (t-Bu-OOH) increases cell-membrane-associated phospholipase A2 (PLA2) activity and stimulates arachidonic acid (AA) release. To test the hypothesis that a membrane-associated serine esterase plays an important role in activating PLA2, the present study was undertaken. In addition to increasing PLA...

Bile salt-stimulated cholesterol esterase is synthesized in the pancreatic acinar cells and is released into the intestinal lumen where it catalyzes cholesterol absorption. In the current study, Caco-2 cells were used as an in vitro model to study the interaction between the pancreatic cholesterol esterase with intestinal cells. Results showed that addition of increasing concentrations of chole...

HE existence in natural populations of a protein polymorphism involving Ttwo forms of a nonspecific esterase has been established in Drosophila mlamgaster (WRIGHT 1961, 1963). The two forms of the esterase, Esterase 6, are distinguishable by their different electrophoretic mobilities in starch gel, Esterase 6" migrating more rapidly toward the anode than Esterase 6s. The inheritance of these tw...

Objective: Alcea genus belongs to Malvaceae family and this is represented by 85 taxa in the world 21 Flora of Turkey.The flowers contain plenty mucilage are used for treatment respiratory diseases such as asthma cough.Alcea dissecta known ‘Govik, Hiro, Hero’ Turkey, leaves species have been asthma,injury, colds, gastrointestinal Turkey. To best our knowledge, there no report on effect extracti...