Development of hepatorenal syndrome in bile duct ligated rats.

Abstract:

AIM:To evaluate in bile duct ligated rats whether there were progressive alterations of renal function without changes in histopathology. METHODS:Male Wistar rats were submitted to sham-surgery or bile duct ligation (BDL) and divided according to the post-procedure time (2, 4 and 6-wk). To determine renal function parameters, rats were placed in metabolic cages and, at the end of the experiment, blood and urine samples were obtained. Histology and hydroxyproline content were analyzed in liver and renal tissue. RESULTS:Rats with 2 wk of BDL increased free water clearance (P = 0.02), reduced urinary osmolality (P = 0.03) and serum creatinine (P = 0.01) in comparison to the sham group. In contrast, rats at 6 wk of BDL showed features of HRS, including significant increase in serum creatinine and reductions in creatinine clearance, water excretion and urinary sodium concentration. Rats with 4 wk of BDL exhibited an intermediate stage of renal dysfunction. Progressive hepatic fibrosis according to post-procedure time was confirmed by histology. The increased levels of liver hydroxyproline contrasted with the absence of structural changes in the kidney, as assessed by histology and unchanged hydroxyproline content in renal tissue. CONCLUSION:Our data show that BDL produced progressive renal dysfunction without structural changes in the kidney, characterizing HRS. The present model will be useful to understand the pathophysiology of HRS.

journal_name

World J Gastroenterol

authors

Pereira RM,dos Santos RA,Oliveira EA,Leite VH,Dias FL,Rezende AS,Costa LP,Barcelos LS,Teixeira MM,Simoes e Silva AC

doi

10.3748/wjg.14.4505

subject

Has Abstract

pub_date

2008-07-28 00:00:00

pages

4505-11

issue

28

eissn

1007-9327

issn

2219-2840

journal_volume

14

pub_type

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