{"title":"血清5′-核苷酸酶和碱性磷酸酶活性的同时测定。","authors":"A A El-Aaser, M M El-Merzabani","doi":"10.1515/cclm.1975.13.10.453","DOIUrl":null,"url":null,"abstract":"<p><p>A simple method is described for the simultaneous determination of alkaline phosphatase (EC 3.1.3.1) and 5'-nucleotidase (EC 3.1.3.5) in serum. The method is based on the determination of inorganic phosphorus released by the action of the two enzymes on adenosine-5'-monophosphate at pH 9.5 (200 mmol/l tris-buffer) in the presence and absence of L-cysteine. This amino acid at a concentration of 2--10 mmol/l was found to be a specific inhibitor for alkaline phosphatase but with no effect on 5'-nucleotidase activity.</p>","PeriodicalId":23822,"journal":{"name":"Zeitschrift fur klinische Chemie und klinische Biochemie","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1975-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/cclm.1975.13.10.453","citationCount":"31","resultStr":"{\"title\":\"Simultaneous determination of 5'-nucleotidase and alkaline phosphatase activities in serum.\",\"authors\":\"A A El-Aaser, M M El-Merzabani\",\"doi\":\"10.1515/cclm.1975.13.10.453\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A simple method is described for the simultaneous determination of alkaline phosphatase (EC 3.1.3.1) and 5'-nucleotidase (EC 3.1.3.5) in serum. The method is based on the determination of inorganic phosphorus released by the action of the two enzymes on adenosine-5'-monophosphate at pH 9.5 (200 mmol/l tris-buffer) in the presence and absence of L-cysteine. This amino acid at a concentration of 2--10 mmol/l was found to be a specific inhibitor for alkaline phosphatase but with no effect on 5'-nucleotidase activity.</p>\",\"PeriodicalId\":23822,\"journal\":{\"name\":\"Zeitschrift fur klinische Chemie und klinische Biochemie\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1975-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1515/cclm.1975.13.10.453\",\"citationCount\":\"31\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Zeitschrift fur klinische Chemie und klinische Biochemie\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1515/cclm.1975.13.10.453\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift fur klinische Chemie und klinische Biochemie","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/cclm.1975.13.10.453","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Simultaneous determination of 5'-nucleotidase and alkaline phosphatase activities in serum.
A simple method is described for the simultaneous determination of alkaline phosphatase (EC 3.1.3.1) and 5'-nucleotidase (EC 3.1.3.5) in serum. The method is based on the determination of inorganic phosphorus released by the action of the two enzymes on adenosine-5'-monophosphate at pH 9.5 (200 mmol/l tris-buffer) in the presence and absence of L-cysteine. This amino acid at a concentration of 2--10 mmol/l was found to be a specific inhibitor for alkaline phosphatase but with no effect on 5'-nucleotidase activity.
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