Hepatic stellate cells and intralobular innervation in human liver cirrhosis

被引:49
|
作者
Ueno, T
Sata, M
Sakata, R
Torimura, T
Sakamoto, M
Sugawara, H
Tanikawa, K
机构
[1] 2nd Department of Medicine, Kurume University, School of Medicine, Kurume
[2] Second Department of Medicine, Kurume University, School of Medicine, Kurume 830
关键词
hepatic innervation; hepatic microcirculation; hepatic stellate cell; alpha-smooth muscle actin; endothelin receptor;
D O I
10.1016/S0046-8177(97)90011-3
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
In normal and cirrhotic human liver tissues, we examined immunolocalization of alpha-smooth muscle actin (alpha-SMA), endothelin-1 receptor (ET-1R), and S-100 protein, with special emphasis on the intralobular spaces, using immunohistochemical methods. The ratio of the number of hepatic stellate cells (HSCs) with closely apposing nerve endings to the total number of HSCs in normal livers was compared with that in cirrhotic livers by electron microscopy. Immunolocalization of alpha-SMA and ET-1R was obviously recognized along the sinusoidal walls in cirrhotic liver and was significantly increased in cirrhotic liver compared with that in normal liver. Immunoreactive products for these substances were mainly localized in HSCs. However, immunolocalization of S-100 protein in intralobular spaces was markedly decreased in cirrhotic liver compared with that in normal liver. Nerve fibers were ultrastructurally hardly visible in intralobularspaces of cirrhotic livers. The ratio of the number of HSCs with closely apposing nerve endings to the total number of HSCs was significantly reduced in cirrhotic liver compared with that in normal liver. These results indicate that in liver cirrhosis, alpha SMA-positive HSCs may play an important role in hepatic sinusoidal microcirculation through vasoactive agents such as ET-1 rather than through intralobular innervation. Copyright (C) 1997 by W.B. Saunders Company.
引用
收藏
页码:953 / 959
页数:7
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