The percentage of total energy intake made up by an elemental diet was the largest, and vitamin K intake was lowest in the mTOR inhibitor resection group. The level of ucOC was increased in inverse proportion to the vitamin K intake. And ratio of fat-derived energy was highest in the resection group. A positive correlation was seen between the level of PK and ratio of fat-derived energy (P < 0.05). We performed double-balloon enteroscopy in 11 patients with CD. No correlation between BMD and endoscopic findings was seen. Conclusion: The present study may suggest a need to provide vitamin K supplementation in CD patients on elemental diet after resection of the

terminal ileum to prevent osteoporosis and fractures. Key Word(s): 1. Crohn’s disease; 2. vitamin K; 3. osteoporosis; 4. nutrition; Presenting Author: QINGFAN YANG Additional Authors: QINGSEN ZHANG, BAILI CHEN, YAO HE, MINHU CHEN, ZHIRONG ZENG Corresponding Author: ZHIRONG ZENG Affiliations: Department of Gastroenterology, the First Affiliated Hospital, Sun Yat-sen University; Department of Gastroenterology, the First Affiliated Hospital,

Sun Yat-sen University Objective: Interleukin (IL)-33 is a novel identified cytokine of the IL-1 family. An abnormal expression of IL-33 was found in the Dabrafenib chemical structure intestinal mucosal of inflammatory bowel disease (IBD) patients. Increasing evidence indicates it plays an important role in the development of inflammation and in the induction of mucosal healing and fibrosis of IBD. However, the genetic influences of the polymorphisms of IL-33 in IBD are unclear. This study aims to investigate whether the single nucleotide polymorphisms find more (SNPs) in IL-33 are associated with IBD in Chinese population. Methods: We selected 8 tag-SNPs from the gene using the HapMap database. These tag-SNPs were genotyped in 365 IBD patients [including 250 crohn's disease (CD) and 115 ulcerative colitis (UC) cases] and 622 healthy controls by MALDI-TOF MS assay. Results: The frequencies distribution

of genotypes and alleles were no difference between cases and controls (P > 0.05). However, genotype-phenotype analysis suggested rs10118795 and rs7025417 were associated with the extra-intestinal manifestation of CD patients; the CC genotype of SNP rs10118795 may be a protective factor to recurrent oral ulcer (P = 0.02, OR 0.456, 95%CI 0.236–0.882); While CD patients who carried C allele of rs7025417 increased the risk for developing recurrent oral ulcer (P = 0.023, OR 1.464, 95%CI 1.055–2.033). In addition, Genetic variants of rs10118795 (P = 0.048, OR 0.48, 95%CI 0.232–0.994) and rs10975519 (P = 0.035, OR 0.698, 95%CI 0.499–0.975) were associated with perianal lesions of CD patients. Furthermore, a significant relationship was observed between polymorphisms of rs10975509 and the upper GI CD (P = 0.012, OR 1.890, 95%CI 1.152–3.098); Meanwhile, carriers with the A allele of rs10975509 may slightly increase the risk for developing ileocolonic CD (P = 0.