{"title":"Gluconeogenic enzymes in defined structures of developing rat nephron.","authors":"H B Burch, J E Brehe, C Chu, S Fagioli","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Three gluconeogenic enzymes, P-pyruvate carboxykinase (PPCK), fructose-1-6 bisphosphatase (FBPase), and glucose-6-phosphatase (G6Pase) were measured in identified structures of rat nephron from 2 days before birth to maturity. In the proximal convoluted tubule, the three enzymes increased from the earliest age assayed to +14 days (PPCK, 7-fold, FBPase, 2-fold and G6Pase, 50-fold). Among the 7 defined structures that were analyzed, highest levels at all ages were in the proximal convoluted tubule with almost no activity in the distal convoluted tubule. All three enzymes had negligible activity in the neogenic zone and mesenchyme. Supported by grants from the Public Health Service (HD 03891 and NS-05221) and the American Cancer Society (P-78).</p>","PeriodicalId":72742,"journal":{"name":"Current problems in clinical biochemistry","volume":"8 ","pages":"290-8"},"PeriodicalIF":0.0000,"publicationDate":"1977-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current problems in clinical biochemistry","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Three gluconeogenic enzymes, P-pyruvate carboxykinase (PPCK), fructose-1-6 bisphosphatase (FBPase), and glucose-6-phosphatase (G6Pase) were measured in identified structures of rat nephron from 2 days before birth to maturity. In the proximal convoluted tubule, the three enzymes increased from the earliest age assayed to +14 days (PPCK, 7-fold, FBPase, 2-fold and G6Pase, 50-fold). Among the 7 defined structures that were analyzed, highest levels at all ages were in the proximal convoluted tubule with almost no activity in the distal convoluted tubule. All three enzymes had negligible activity in the neogenic zone and mesenchyme. Supported by grants from the Public Health Service (HD 03891 and NS-05221) and the American Cancer Society (P-78).
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