PERSISTENCE OF A LIVER METABOLIC ZONATION IN EXTRAHEPATIC BILIARY ATRESIA CIRRHOTIC LIVERS

被引:6
|
作者
SOKAL, EM
COLLETTE, E
BUTS, JP
机构
[1] CATHOLIC UNIV LOUVAIN,ST LUC HOSP,PEDIAT GASTROENTEROL LAB,B-1200 BRUSSELS,BELGIUM
[2] CATHOLIC UNIV LOUVAIN,ST LUC HOSP,GASTROENTEROL & NUTR UNIT,PEDIAT HEPATOL LAB,B-1200 BRUSSELS,BELGIUM
关键词
D O I
10.1203/00006450-199109000-00018
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
To evaluate whether liver metabolic zonation persists in human biliary cirrhosis, we used quantitative cytochemistry to measure activities of glucose 6 phosphatase (G6P) and NADPH dehydrogenase (ND) in hepatocytes situated in different zones of liver cirrhotic nodules. Liver specimens were obtained from 13 children with extrahepatic biliary atresia with compensated cirrhosis. Activity and distribution were compared with zonal activities measured in 17 control human liver specimens obtained during reduction hepatectomies for orthotopic liver transplantation. In normal human liver, G6P was 1.86 times more active in the periportal than in the perivenular zone. On the contrary, ND activity was lower in the periportal zone (63% of perivenular activity). A metabolic zonation persisted in extra-hepatic biliary atresia with compensated cirrhosis. G6P activity was 1.56 times greater at the nodule periphery than at the nodule center, whereas ND activity was lower at the periphery (75% of nodule center activity). This metabolic zonation is the opposite of that observed in animal toxic (CCl4) cirrhosis, in which greater G6P activity is observed at the nodule center and greater ND activity at its periphery. This confirms our previous hypothesis that the type of cirrhotic metabolic zonation may depend on the site of initial liver damage.
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页码:286 / 289
页数:4
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