Extracellular Superoxide Dismutase Secretion and Activity during Development
نویسندگان
چکیده
منابع مشابه
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...
متن کاملExtracellular 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...
متن کاملSecretion of extracellular superoxide dismutase in neonatal lungs.
Extracellular superoxide dismutase (EC-SOD), the only known enzymatic scavenger of extracellular superoxide, may modulate reactions of nitric oxide (NO) in the lungs by preventing reactions between superoxide and NO. The regulation of EC-SOD has not been examined in developing lungs. We hypothesize that EC-SOD plays a pivotal role in the response to increased oxygen tension and NO in the neonat...
متن کاملGene 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 ...
متن کاملPrenatal hypoxia decreases lung extracellular superoxide dismutase expression and activity.
Extracellular superoxide dismutase (EC-SOD), which scavenges extracellular superoxide (O.), is highly regulated in the developing lung. In the prenatal rabbit, EC-SOD is predominantly intracellular and inactive, and postnatally, active EC-SOD is secreted. We hypothesized that prenatal hypoxia would delay the normal postnatal secretion of active EC-SOD in the lung. Pregnant New Zealand White rab...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1999
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-199904020-00265