Expression of a cyclo-oxygenase-2 transgene in murine liver causes hepatitis
نویسندگان
چکیده
منابع مشابه
Constitutive expression of cyclo-oxygenase 2 transgene in hepatocytes protects against liver injury.
The effect of COX (cyclo-oxygenase)-2-dependent PGs (prostaglandins) in acute liver injury has been investigated in transgenic mice that express human COX-2 in hepatocytes. We have used three well-established models of liver injury: in LPS (lipopolysaccharide) injury in D-GalN (D-galactosamine)-preconditioned mice; in the hepatitis induced by ConA (concanavalin A); and in the proliferation of h...
متن کاملCyclo-oxygenase 2 expression impairs serum-withdrawal-induced apoptosis in liver cells.
We have investigated the mechanism of COX-2 (cyclo-oxygenase 2)-dependent inhibition of apoptosis in liver, a key pathway underlying proliferative actions of COX-2 in liver cancers, cirrhosis, chronic hepatitis C infection and regeneration after partial hepatectomy. Stable expression of COX-2 in CHL (Chang liver) cells induced proliferation, with an increase in the proportion of cells in S-phas...
متن کاملEvaluation of cytotoxicity mechanism of two cyclo-oxygenase-2 inhibitors in leukemia cell line
Introduction: Leukemia is considered one of the main causes of death, and current chemotherapeutic agents are unable to provide optimal responses due to chemo-resistance. Therefore, there is a constant need for new drugs. Cyclooxygenase- 2 (COX-2) inhibitors can be helpful by reducing the necessary dose of routine chemotherapeutic drugs. Herein, we evaluated the cytotoxicity activity as well...
متن کاملLocalization of cyclo-oxygenase-2 in human recurrent colorectal cancer.
AIM The aim of this paper is to examine COX-2 expression in human recurrent colorectal carcinoma tissues using immunohistochemistry and quantative real-time PCR (qPCR). METHODS Colon and rectal specimens were obtained from 26 patients with recurrent colorectal carcinomas. We examined COX-2 expression in human recurrent colorectal carcinoma tissues using immunohistochemistry and quantative rea...
متن کاملCyclo-oxygenase-2 (COX-2) expression at the site of recent myocardial infarction: friend or foe?
BACKGROUND Cyclo-oxygenase-2 (COX-2) is induced in cardiomyocytes only in response to stress, such as ischaemia. OBJECTIVE To assess COX-2 expression at the site of recent myocardial infarction. METHODS COX-2 expression was evaluated by specific immunostaining in cardiomyocytes from 23 subjects who died 10-60 days after acute myocardial infarction. The relation between COX-2 myocardial expr...
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ژورنال
عنوان ژورنال: Gut
سال: 2007
ISSN: 0017-5749
DOI: 10.1136/gut.2006.097923