Repository of Research and Investigative Information

Repository of Research and Investigative Information

دانشگاه علوم پزشکی و خدمات بهداشتی درمانی زنجان

The effect of extracted bacterial Salmonella enteritidis lipopolysaccharide on inducible nitric oxide synthase in human liver hepatocellular carcinoma cell lines in induction and inhibition conditions

(2012) The effect of extracted bacterial Salmonella enteritidis lipopolysaccharide on inducible nitric oxide synthase in human liver hepatocellular carcinoma cell lines in induction and inhibition conditions. Journal of Pure and Applied Microbiology. pp. 39-45.

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Abstract

Hepatocellular carcinoma is the most ordinary type of liver cancer and most commonly appears in a patient with chronic viral hepatitis and with cirrhosis. Lipopolysaccharide motivates the hepatocyte cells and increases the production inducible cytokine with the high production of nitric oxide and reactive oxygen species. In this study, the rate change iNOS searched by adding lipopolysaccharide and the effect of inhibiting this inflammatory enzyme by L-NAME and combined effect of this in HepG2 cancer cells was assessed. Salmonella enteritidis lipopolysaccharide is extracted by methanol-chloroform method and silver stained SDS-PAGE electrophoresis bands. Four treatment groups of Human liver hepatocellular carcinoma cell lines stimulated with 100ng/ml lipopolysaccharide, 500μM L-NAME as inhibitor and were incubated for 12 and 24 hours. Variables including both increase and decrease inflammatory factor, iNOS, was assayed. The obtained results showed that initial activity of iNOS in not stimulated in HepG2 cell, 0.902U/ml after stimulation with lipopolysaccharide for 12 and 24hours (0.491U/ml) and (0.433U/ml) decreased and the effect of this inhibitor was also studied. The data showed that reducing iNOS in Human liver hepatocellular carcinoma cell lines correlated with the cell density and duration of incubation with LPS. Inhibition of enzyme associated with inflammation, with inhibitor substances; L-NAME, observed as well as lipopolysaccharide. We can potentially design drugs to treat a variety disease and cancer to use.

Item Type: Article
Keywords: Drug Evaluation | Pharmaceutical Preparations | free LPS
Page Range: pp. 39-45
Journal or Publication Title: Journal of Pure and Applied Microbiology
Abstract and Indexing: ISI, Pubmed, Scopus
Quartile : Q4
Volume: 6
Number: 1
Publisher: scopus
Depositing User: خانم مریم زرقانی
URI: http://repository.zums.ac.ir/id/eprint/1500

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