Back to Search
Start Over
Promoter hypomethylation of protease-activated receptor 2 associated with carcinogenesis in the stomach.
- Source :
-
Journal of gastroenterology and hepatology [J Gastroenterol Hepatol] 2007 Jun; Vol. 22 (6), pp. 943-8. Date of Electronic Publication: 2007 May 22. - Publication Year :
- 2007
-
Abstract
- Background and Aim: Trypsin acting at protease-activated receptor 2 (PAR2) contributes to a progression of malignant tumors. An abnormal DNA methylation has been recognized as an important molecular mechanism for the genesis of various types of cancers. We attempted to clarify the relationship between the promoter methylation of PAR2 and gastric cancer.<br />Method: We estimated the methylation of the PAR2 promoter in both antral non-cancerous mucosa and cancer lesions in 94 patients with gastric cancer. We employed a methylation-specific PCR method.<br />Results: Regarding the methylation ratio (MR) of antral-non-cancerous mucosa, no significant difference was despite among gender, age and Helicobacter pylori infection status, whereas MR increased rising inflammation scores. The MR of cancer lesions was significantly lower than that of antral non-cancerous mucosa. This finding was not dependent on tumor staging, but also histological classification. In venous invasion, lymph node metastasis, or peritoneal dissemination negative cases, this significant lower MR was also seen.<br />Conclusion: The promoter methylation of PAR2 seems to be increased with a progression of chronic inflammation and has an inhibitory effect on carcinogenesis of the stomach.
- Subjects :
- Analysis of Variance
Disease Progression
Female
Helicobacter Infections complications
Helicobacter pylori
Humans
Male
Middle Aged
Polymerase Chain Reaction
Precancerous Conditions enzymology
Precancerous Conditions genetics
Statistics, Nonparametric
DNA Methylation
Promoter Regions, Genetic
Receptors, Proteinase-Activated genetics
Stomach Neoplasms enzymology
Stomach Neoplasms genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0815-9319
- Volume :
- 22
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Journal of gastroenterology and hepatology
- Publication Type :
- Academic Journal
- Accession number :
- 17517084
- Full Text :
- https://doi.org/10.1111/j.1440-1746.2007.04847.x