Gene Transfer of Extracellular Superoxide Dismutase Increases Superoxide Dismutase Activity in Cerebrospinal Fluid

Gene transfer of extracellular superoxide dismutase increases superoxide dismutase activity in cerebrospinal fluid.

BACKGROUND AND PURPOSE Copper-zinc superoxide dismutase (CuZnSOD) is expressed intracellularly, while extracellular SOD (EC-SOD) is released from cells. The purpose of this study was to determine whether gene transfer of CuZnSOD increases SOD activity predominantly in tissues, and gene transfer of EC-SOD increases SOD activity in cerebrospinal fluid (CSF). We also determined whether heparin or ...

Extracellular-superoxide dismutase in cerebrospinal fluid from infants/children.

endothelial cell (HUVEC) and bovine aertic endothelial cell surface proteoglycans was significantly decreased by the incubation with SNAP andNOR4, poterrt nitric oxide (NO) donors. NO derived from lipopolysaccharide-stiinulated J774 A-1 cells also decreased the binding of EC-SOD to HUVEC, and this decrease was blocked by NG-nitro-L-arginine, a itric oxide synthase inhibiter. Furthermore. the de...

Superoxide dismutase Superoxide dismutase

Extracellular Superoxide Dismutase

Extracellular-superoxide dismutase is a tetrameric copper-containing glycoprotein that previously has been demonstrated to be the major superoxide dismutase of human extracellular fluids. The occurrence of this enzyme in various human tissues that were removed from two accidental death victims and in 19 different human cultured cell lines was determined. All investigated tissues were found to c...

Inactive extracellular superoxide dismutase disrupts secretion and function of active extracellular superoxide dismutase.

Extracellular superoxide dismutase (EC-SOD) is an antioxidant enzyme that protects cells and tissues from extracellular damage by eliminating superoxide anion radicals produced during metabolism. Two different forms of EC-SOD exist, and their different enzyme activities are a result of different disulfide bond patterns. Although only two folding variants have been discovered so far, five foldin...