Administration of human recombinant activated protein C is not associated with pancreatic parenchymal haemorrhage in L-arginine-induced experimental acute pancreatitis.
JOP
; 14(6): 610-7, 2013 Nov 10.
Article
em En
| MEDLINE
| ID: mdl-24216546
ABSTRACT
CONTEXT Microvascular thrombosis is a critical event in severe acute pancreatitis. Human recombinant activated protein C (Xigris®, Eli Lilly, Indianapolis, IN, USA) modulates the interplay between pro-inflammatory and pro-coagulant pathways and maintains microvascular patency. However, the anticoagulant properties of Xigris® may precipitate bleeding from the inflamed pancreas. OBJECTIVE:
This study tests the hypothesis that Xigris® can ameliorate experimental acute pancreatitis without causing pancreatic haemorrhage.METHODS:
Sprague Dawley rats were allocated as follows Group 1 control (n=7); Group 2 acute pancreatitis (n=6); Group 3 administration of Xigris® 500 µg/kg body weight before induction of acute pancreatitis (n=6); and Group 4 Administration of Xigris® 500 µg/kg body weight 30 minutes after induction of acute pancreatitis (n=6). Acute pancreatitis was induced by intraperitoneal administration of L-arginine 300 mg/100 g body weight. Animals were sacrificed at 48 hours and biochemical, haematological, and histological markers of pancreatic haemorrhage and inflammation assessed.RESULTS:
Median lipase in animals with acute pancreatitis was 10 U/mL (range 7-16 U/mL) compared to 5.5 (range 3-8 U/mL) in controls (P=0.028). Lipase was also elevated in animals given Xigris® both before (12 U/mL, range 8-22 U/mL; P=0.031 vs. control group) and after (46 U/mL, range 9-71 U/mL; P=0.015 vs. control group) induction of acute pancreatitis). Haemoglobin levels were similar among all groups (P=0.323). There was no histological evidence of pancreatic haemorrhage in animals treated with Xigris®. Pre-treatment with Xigris® was associated with a significant reduction in pancreatic injury. This effect was absent when Xigris® was administered after induction of acute pancreatitis.CONCLUSION:
Xigris® did not lead to pancreatic haemorrhage in experimental acute pancreatitis. Administration of Xigris® prior to induction of acute pancreatitis was associated with amelioration of injury. This effect was not seen with administration of Xigris® after induction of acute pancreatitis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pâncreas
/
Pancreatite
/
Proteína C
/
Anti-Infecciosos
Tipo de estudo:
Diagnostic_studies
/
Risk_factors_studies
Limite:
Animals
/
Humans
/
Male
Idioma:
En
Revista:
JOP
Ano de publicação:
2013
Tipo de documento:
Article