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Retrorsine: a kinetic study of its influence on rat liver regeneration in the portal branch ligation model.

Abstract：

BACKGROUND:Retrorsine, a naturally occurring pyrrolizidine alkaloid, impairs liver regeneration after partial hepatectomy by mechanisms that are still unclear. AIM:The aim of the study was to clarify the influence of retrorsine on cell cycle progression in the regenerating liver lobes of rats after portal branch ligation (PBL). METHODS:Liver weight, protein and DNA contents, DNA synthesis (5'-bromodeoxyuridine (BrdU) incorporation) and cellular levels of Cyclin E, CDK-2, CDK-4 and proliferating cell nuclear antigen (PCNA) were assessed before and 24, 48, 72 and 168 h after PBL. RESULTS:Before surgery, higher levels of cyclin E, CDK-2, CDK-4 and PCNA as well as BrdU incorporation were found in the liver of retrorsine-treated rats than in untreated rats. Liver weight gain, protein and DNA synthesis as well as induction of cell cycle related proteins were all strongly impaired by retrorsine in the regenerating lobes after PBL. CONCLUSIONS:In conclusion, retrorsine impairs liver regeneration in the PBL model not only by an S or G2/M phase block, but also by a block located before the G1/S transition of the cell cycle.

journal_name

J Hepatol

journal_title

Journal of hepatology

authors

Picard C,Lambotte L,Starkel P,Sempoux C,Saliez A,Van Den Berge V,de Saeger C,Horsmans Y

doi

10.1016/s0168-8278(03)00176-4

subject

Has Abstract

pub_date

2003-07-01 00:00:00

pages

99-105

issue

1

eissn

0168-8278

issn

1600-0641

pii

S0168827803001764

journal_volume

39

pub_type

杂志文章

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