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Preferential distribution of apoptotic bodies in acinar zone 3 of normal human and rat liver.

Abstract：

:The aim of the present investigation was to study the number and acinar distribution of apoptotic bodies in normal liver as an approach to a better understanding of cell kinetics in the hepatic parenchyma. The material included 20 normal human needle liver biopsies and 20 normal male Sprague-Dawley rats. For each liver sample, the following parameters were measured: number of apoptotic bodies in the lobule, topographical localization, and distance from terminal hepatic veins (THV), i.e., the row of hepatocytes concerned, H1 being the closest to the THV. The results were strikingly similar in human and in animal material, showing that apoptotic bodies are rare in the normal liver and, when present, are always observed in zone 3, next to the THV. In fact, the first two rows of hepatocytes (H1 and H2) contained 80% of the apoptotic bodies in human liver, and 95% in rat liver. These data show that apoptotic bodies are not randomly dispersed in normal liver tissue but show a preferential acinar distribution. In addition, the vast majority of apoptotic bodies are located in the row of liver cells immediately adjacent to the THV. If apoptosis is indeed an expression of physiological cell renewal or 'programmed cell death', these findings support the concept of an aging gradient of liver cells, with zone 3 containing older hepatocytes.

journal_name

J Hepatol

journal_title

Journal of hepatology

authors

Benedetti A,Jézéquel AM,Orlandi F

doi

10.1016/s0168-8278(88)80004-7

subject

Has Abstract

pub_date

1988-12-01 00:00:00

pages

319-24

issue

3

eissn

0168-8278

issn

1600-0641

pii

S0168-8278(88)80004-7

journal_volume

7

pub_type

杂志文章

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