PubMedCrossRef 29. Wang YP, Bennett C, Pan T: Endoscopic mucosal resection for early gastric cancer. CFTRinh-172 in vivo Cochrane Database Syst Rev 2006, (1):CD004276. 30. Cho JY, Kim YS, Jung IS, Ryu CB, Lee MS, Shim CS, Jin SY: Controversy concerning the cutoff

value for depth of submucosal invasion after endoscopic mucosal resection of early gastric cancer. Endoscopy 2006,38(4):429–430. author reply 430PubMedCrossRef Competing interests The authors BEZ235 declare that they have no competing interests. Authors’ contributions HI* conceived and designed the study, collected clinical data, and performed the statistical analysis and interpretation of data. HI participated in the study design and performed interpretation of data. HI, MO, AY, TH, and KS collected clinical data. NE, RM, and NS participated in the study design and performed interpretation

of data. CM and YW collected clinical data. NS participated in the study design and performed interpretation of data. SH delivered patients’ pathologic data. SK participated in the study design and coordination. All authors read and approved the final manuscript.”
“Introduction It is known that colorectal cancer (CRC) CYT387 price is one of the most common cancers especially in western countries, referred to a multiple process, multiple factors with high recurrence and high mortality [1]. Chemoprevention methods for CRC have obtained increasing attention as surgery and chemotherapy

strategies perform little function once diagnosed to be tumor that invades the muscularis propria. Also, the Non-steroidal anti-inflammatory drugs (NSAIDs), such as COX-2 inhibitors, are not always successful, and may have some harmful side-effects Thiamet G [2]. Generally, clinical trials require at least 3-5 years follow up and a large number of patients are difficult to control their lifestyles such as smoking and wine intake which may affect the incidence of cancer [3, 4]. Therefore, we choose animal model induced by chemistry drugs 1, 2-dimethylhydrazine (DMH) to simulate the formation of CRC. As azoxymethane (AOM) or 1, 2-dimethylhydrazine (DMH)-induced colon carcinogenesis in mice or rat have been identified as a useful tool [5–9]. In the previous study, we have successfully induced CRC in this model using ICR mice [9]. Folic Acid (FA) is one kind of water-solubility vitamin, which has been believed to be chemo-preventive agent that can provide methy-group to DNA thus impact DNA synthesis and DNA methylation [10]. Abbreviations in DNA synthesis often lead to DNA mutation, DNA strand break and the impairment of DNA repair, which finally result in cancer formation [11]. However, there are many conflicting data about whether FA can inhibit or promote colorectal adenoma (CRA) from clinical or preclinical studies.