PURPOSE To determine if the paraoxonase 1 L55M and paraoxonase 1 Q192R gene polymorphisms have an effect on the risk of having a retinal vein occlusion (RVO). METHODS This case-control prospective study included 120 patients with RVO and 84 control subjects. All subjects were screened for age, gender, hypertension, diabetes, body mass index, fibrinogen, high-density lipoprotein cholesterol, l...

BACKGROUND Diabetes mellitus is a heterogeneous metabolic disorder characterized by hyperglycemia. Studies showed paraoxonase activity, and vitamin C and A levels are decreased in diabetes. The effect of omega-3 fatty acids on serum paraoxonase activity and vitamins A, E, C in patients with type 2 diabetes is not fully understood. This study aimed to determine the effect of omega-3 fatty acids ...

oxidative stress is involved in the pathogenesis of asthma. paraoxonase 1 (pon1) and arylesterase are esterase enzymes displaying antioxidant characteristics. pon1 activity varies widely among individuals and ethnic groups, partly related to polymorphisms. the aim of this study was to determine the activities of pon1 and arylesterase including the phenotype distribution of pon1 in asthmatic pat...

In this study, the alteration of paraoxonase, ceruloplasmin and immunoglobulin G levels in hair goats at different ages were investigated. 88 grazed same season Adana (Turkey) included study. Goats divided into five groups as 0-6 months old, 7-12 1.5-2 years 2.5-6 old 7< old. Paraoxonase activity measured by spectrophotometer was with ELISA kit. Although there no statistically significan...

Paraoxonase-1, a high-density lipoprotein linked enzyme complex, was shown to be decreased in several cardiovascular diseases. We aimed to explore whether serum paraoxonase and arylesterase activities differ in dipper and non-dipper prehypertensive subjects compared to healthy controls.Sixty prehypertensive subjects and 30 controls were enrolled. All subjects underwent echocardiographic assessm...

OBJECTIVE To compare paraoxonase activity and changes in oxidative status in asthmatic children and healthy children by determining serum paraoxonase activity and total oxidative status, total antioxidant capacity and lipid hydroperoxidation. METHODS Forty two asthmatic children were compared with 32 healthy children of similar age and sex. To evaluate the paraoxonase and oxidative status, to...

Paraoxonase was identified as a genetic risk factor for cardiovascular disease (CVD) in recent studies focusing on a polymorphism affecting position 191. A second polymorphism of the paraoxonase gene affects position 54 and involves a methionine (M allele) to leucine (L allele) change. It was investigated in diabetic patients (n = 408) with and without vascular disease. There were highly signif...

OBJECTIVE Paraoxonase is a high density lipoprotein-associated anti-oxidant enzyme. The aim of this study was to investigate the serum paraoxonase and arylesterase activities and associations between these enzymes and lipid hydroperoxide (LOOH) in preeclamptic patients. MATERIALS AND METHODS The study included 47 preeclamptic (25 severe and 22 mild preeclampsia cases) and 20 normotensive heal...

BACKGROUND Paraoxonase-1, an organophosphorous-hydrolyzing enzyme, was shown to provide protection against organophosphates poisoning in vivo. In vitro findings suggest that the phytoalexin resveratrol can elevate paraoxonase-1 levels and thus may provide protection against organophosphate poisoning. This study was conducted to evaluate the effect of prolonged resveratrol intake on paraoxonase-...

activated the p-nitrophenyl acetateand p-nitrophenyl butyrate-hydrolysing activity of sheep serum at a significantly slower rate than it did the paraoxon-hydrolysing activity. From this and supporting evidence involving theKm for hydrolysis activity of sheep, rabbit and hog sera and of purified paraoxonase towards p-nitrophenyl acetate, it was concluded that a new esterase hydrolysing pnitrophe...