BACKGROUND/AIMS Human paraoxonase-1 (PON1) is responsible for the antioxidant effect of high-density lipoprotein (HDL) by inhibiting low-density lipoprotein oxidation. Previous studies discovered dyslipidemia (DL) and decreased PON1 activity in chronic renal failure (CRF). We aimed to determine PON and arylesterase activity, phenotypic distribution of the PON1 enzyme, and lipid profile in low a...

With the continuous increase in bandwidth demand generated by consumer and business applications, a new higher capacity access network is required. Today, with the development of electronic media and its usage most of the networks having more number of nodes and as the number of nodes increases in the network the communication over the network also increases. A reliable end packet delivery is t...

The passive optical network (PON), with its inherent point to multi-point structure, allows for centralized placement of active equipment and possible extension of its boundary towards core networks. This property of the PON can be exploited for node consolidation where multiple central offices are replaced by a single one covering a larger service area. Such node consolidation is being particu...

Statins (3-hydroxy-3-methylglutarylcoenzyme A reductase inhibitors), apart from lowering plasma cholesterol, modulate other processes involved in atherogenesis. Paraoxonase (PON), contained in plasma high density lipoproteins, protects plasma lipoproteins from oxidative damage and is a potentially atheroprotective enzyme. We investigated the effect of cerivastatin on oxidant-antioxidant balance...

The fate of the inorganic and organic nitrogen trapped in the coastal upwelling system of Ría de Vigo (NW Spain) was studied at the 2 to 4 d time-scale during July and September 2002. A transient geochemical model was applied to the measured residual currents and concentrations of inorganic nitrogen (NT), and dissolved (DON) and particulate (PON) organic N to obtain (1) the net balance of input...

High-density lipoprotein (HDL) is an independent protective factor against cardiovascular disease. The enzyme paraoxonase-1 (PON-1) contributes to the anti-atherogenic effects of HDL. In vitro studies have demonstrated that paraoxonase's substrates are highly heterogeneous and that some contribute to the development of atherosclerotic lesions. The atheroprotective role of PON-1 was established ...

BACKGROUND It has been proposed that reactive oxygen species (ROS) is involved in the pathogenesis of various diseases. Paraoxonase, a high-density lipoprotein associated enzyme, prevents low-density lipoproteins from oxidation. OBJECTIVES The aim of the present study was to investigate the serum activities of paraoxonase-1 (PON-1), and aryleterase (ARE) as well as total antioxidant capacity ...

We aimed to investigate whether agoraphobia (A) in panic disorder (PD) has any effects on oxidative and anti-oxidative parameters. We measured total antioxidant capacity (TAC), paraoxonase (PON), arylesterase (ARE) antioxidant and malondialdehyde (MDA) oxidant levels using blood samples from a total of 31 PD patients with A, 22 PD patients without A and 53 control group subjects. There was a si...