Hemodynamic effects of the early and long-term administration of propranolol in rats with intrahepatic portal hypertension.

Abstract:

:Background and aims The aims of this study were to evaluate a preventive effect on collateral venous circulation of long-term administration of propranolol in intrahepatic portal hypertensive rats. Methods Eighty-six Sprague-Dawley rats were allocated to two models of hepatic fibrosis, bile duct-ligated (BDL) induced and carbon tetrachloride (CCl(4)) induced. Each model was divided into two groups: one receiving placebo and the other propranolol (75 mg kg(-1) d(-1)). Mean arterial pressure (MAP), heart rate (HR), portal pressure (PP), cardiac index (CI), vascular systemic resistance, and splenorenal shunt blood flow (SRS-BF) were measured in anesthetized rats. Results In the BDL model, no significant hemodynamic changes were observed in the propranolol group compared with the placebo group. In CCl(4)-induced rats, HR (390 +/- 50 vs. 329 +/- 51 beats/min, P = .001), CI (44 +/- 11 vs. 34 +/- 10 ml/min, P = .004), PP (15.4 +/- 3.0 vs. 13.4 +/- 1.9 mmHg, P = .045), and SRS-BF (1.4 +/- 1.1 vs. 1.0 +/- 1.0 ml/min, P = .047) were significantly lower in the propranolol group. Conclusions This study showed that propranolol has a significant hemodynamic effect only in the CCl(4) model and suggested a model-dependent effect of propranolol.

journal_name

Hepatol Int

journal_title

Hepatology international

authors

Fizanne L,Régenet N,Wang J,Oberti F,Moal F,Roux J,Gallois Y,Michalak S,Calès P

doi

10.1007/s12072-008-9070-5

subject

Has Abstract

pub_date

2008-12-01 00:00:00

pages

457-64

issue

4

eissn

1936-0533

issn

1936-0541

journal_volume

2

pub_type

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