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N-乙酰-β-D-葡糖胺酶(N-acetyl-β-D-glucosaminidase,NAG)是来源于糖蛋白的高分子物质(分子量112,000～126,000)。存在于肾小管上皮细胞溶酶化,为糖原分解酶之一。肾脏损伤时尿NAG排泄量增加。作者用NAG试验盒(盐野议制药)测定了210例正常孕妇和78例妊娠中毒症孕妇(轻型73例,重症5例)尿NAG。其方法为把人工基质甲酚硫邻苯二甲酰-H-乙酰-β-D-葡糖胺酶(m-cresol-sulfo-phtalenyl-N-acetyl-β-D-glucosaminidase,MCP-NAG)溶解于pH4.9.0.05M枸椽酸缓冲
N-acetyl-β-D-glucosaminidase (NAG) is a glycoprotein derived polymer (molecular weight of 112,000 to 126,000). Presence in renal tubular epithelial lysolization, one of the glycogenolytic enzymes. Increased urinary NAG excretion during kidney injury. The authors tested urine NAG in 210 normal pregnant women and 78 pregnant women with gestational poisoning (73 for mild and 5 for severe) using the NAG test kit (Yoshino Pharmaceutical Co., Ltd.). The method comprises the following steps of: mixing m-cresol-sulfo-phtalenyl-N-acetyl-β-D-glucosaminidase (MCP-NAG) Dissolved in pH 4.9.0.05M citrate buffer