INTRODUCTION: Paraoxonase 1 (PON1) is a high-density lipoprotein (HDL)-associated enzyme which known to hydrolyse most pesticides including organophosphates (OPs) and prevent atherosclerosis by inhibiting oxidative modification of low-density (LDL). Glyphosate one the common organophosphate used in agriculture many developing countries Malaysia. The aim this study assess PON1 ability oxidized L...

OBJECTIVES Paraoxanase 1 (PON1) plays a protective role against the oxidative modification of plasma lipoproteins and hydrolyzes lipid peroxides in human atherosclerotic lesions. Cumin is the dried seed of the herb Cuminumcyminum that is known as Zeera in Iran. Cumin seeds contain flavonoids which are now generally recognized to have antioxidant activity and improve the antioxidant system. So, ...

This study investigated the effects of vitamin C (L-ascorbic acid) and folic acid supplementation n the levels of enzymes activities such as paraoxonase (PON1) and arylesterase and metabolites in he plasma of heat-stressed Japanese quails (Coturnix coturnix japonica) kept at 34°C. A total of 150 apanese quails (10 days old) were randomly assigned to five treatment groups, with three replicates ...

Human paraoxonase 1 (hPON1) is a lipid-associated enzyme transported on HDL. There is considerable interest in hPON1 because of its putative antioxidative/antiatherogenic properties. We have created a recombinant baculovirus (BV) to generate hPON1A in large quantities for structure-function studies and here describe the method for production and isolation of the enzyme. A high level of recombin...

OBJECTIVE Oxidative stress is the main pathogenetic mechanism in bladder cancer among many other causes. We aimed to investigate whether a potential relationship exists between bladder cancer and the activities of paraoxonase (PON1) and arylesterase (ARE) enzymes. MATERIAL AND METHODS The study included 56 patients with bladder cancer, and 57 healthy individuals. The relationships between enz...

One hundred and seventy-one genes encoding potential esterases from 11 bacterial genomes were cloned and overexpressed in Escherichia coli; 74 of the clones produced soluble proteins. All 74 soluble proteins were purified and screened for esterase activity; 36 proteins showed carboxyl esterase activity on short-chain esters, 17 demonstrated arylesterase activity, while 38 proteins did not exhib...