We found the prevalence of 2 important cutaneous manifestations to be 9.3% in IBD in Turkish patients. EN was found to be more common in Crohn's disease and is associated with an active episode of bowel disease and peripheral arthritis. In addition, PG was connected with uveitis and peripheral arthritis.

IBDs are frequently encountered in Turkey. IBD incidence is lower than North and West Europe but close to Middle East in our country. The majority of IBD cases are diagnosed in young people (20 to 40 y) with predominance in males. The rate of both intestinal and extraintestinal complications in our population was low when compared with the data reported in the literature. IBD and especially UC, can coexist with amebiasis or become manifest with amebic infestation. The presence of concomitant ameba may create confusion and cause dilemmas in the diagnosis and treatment of UC.

These findings suggest that the polymorphisms observed in the NOD2/CARD15, NOD1/CARD4, and ICAM-1 genes are not genetic susceptibility factors for Crohn's disease or ulcerative colitis in Turkey.

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We aimed to evaluate the carcinogenesis risk in inflammatory bowel disease via p53 mutation and its relation with hyperproliferation (cyclin-D1) and angiogenesis (with vascular endothelial growth factor [VEGF] and microvessel density) and whether these events play important roles in pathogenesis of inflammatory bowel disease. Colonic tissue samples of 26 ulcerative colitis, 6 Crohn's disease, and 8 amoebic colitis patients as well as samples of 10 healthy controls were stained with p53, cyclin-D1, CD34, and VEGF monoclonal antibodies by immunohistochemistry and evaluated semiquantitatively. Expression of p53 was higher in ulcerative colitis than in the healthy control and amoebic colitis groups (4.15 +/- 2.07, 1.4 +/- 1.5, 1.3 +/- 1.5; P < 0.001). The Crohn's disease group had the highest p53 expression (4.6 +/- 1.6). The Crohn's disease, ulcerative colitis, and amoebic colitis groups all had higher VEGF expression than did the healthy controls (respectively, 4.3 +/- 1.2, 2.92 +/- 2.0, 2.3 +/- 1.5, 0.6 +/- 0.97; P < 0.001). Also, microvessel density was statistically higher in all three colitis groups than in healthy controls. Cyclin-D1 expression in all four groups was similar. The study showed that p53 mutation was present in nonneoplastic mucosa of inflammatory bowel disease patients. Detecting strong p53 overexpression with VEGF overexpression may help in differentiating inflammatory bowel disease from other colitis.

Thromboembolism is an important cause of morbidity and mortality in patients with inflammatory bowel disease (IBD). The aim of this study was to investigate common thrombophilic markers in patients with IBD and to search for a relation between these predisposing factors and activity of disease. Seventy-four patients with ulcerative colitis, 22 patients with Crohn's disease and 20 healthy volunteers were enrolled into the study. Plasma levels of protein C, protein S, antithrombin III and activated protein C resistance were determined in patients with IBD and healthy controls. Mean values of protein C, protein S and antithrombin III were significantly lower in patients with ulcerative colitis and Crohn's disease compared with the healthy control group. Patients with active ulcerative colitis had lower protein C, protein S and antithrombin III level than patients in remission (P < 0.001, P < 0.001, P < 0.001). Levels of protein C, S and antithrombin III were also decreased in patients with active Crohn's disease compared with those in remission (P < 0.05, P < 0.001, P < 0.05). Differences in all natural anticoagulant levels between patients in remission and healthy individuals in both ulcerative colitis and Crohn's disease groups were not statistically significant (P > 0.05). No significant difference was observed in activated protein C resistance (APCR) between patients with active disease, those in remission and the control group (P > 0.05). Abnormalities in natural anticoagulants are common in patients with IBD during active disease.

IBDPA is a frequent extra-intestinal complication of IBD. Those of female gender and the presence of Crohn's disease, erythema nodosum and pyoderma gangrenosum have a higher risk to develop IBDPA.