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Goals: The aim of this study was to describe mental health factors associated with the development of fatigue in inflammatory bowel disease (IBD) patients., Background: IBD includes ulcerative colitis and Crohn's disease. Patients with chronic diseases can present fatigue differently and qualitatively more severely than those typically represented by healthy populations., Study: This was a cross-sectional study in which 200 Mexican patients were attending the Inflammatory Bowel Disease Clinic at the National Institute of Medical Sciences and Nutrition. All patients answered 3 instruments: the first IBD-fatigue, HADS (Hospital Anxiety and Depression Scale), and PSQI (Pittsburgh Sleep Quality Index). The statistical analysis was carried out in the statistical program SPSS v 24., Results: The percentage of fatigue in our patients was 55.5% (n=111) for mild-moderate fatigue, 31.5% (n=63) for severe fatigue, and only 13% (n=26) had no fatigue. Sleep disturbance and sleep latency were the most important predictors of fatigue in IBD patients., Conclusions: Sleep quality and depression have an impact on fatigue in Mexican patients with IBD. It is important for multidisciplinary management to reduce these symptoms and improve the quality of life of patients with IBD., (Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Ulcerative colitis (UC) is an inflammatory bowel disease of unknown etiology. Among cytokines induced in UC, interleukin 1 antagonist (IL-1ra) and interleukin 1 β (IL-1β) seems to have a central role because of its immunoregulatory and proinflammatory activities., Goal: To determine the association between IL-1RA and IL-1B gene polymorphisms and the clinical features of UC in the Mexican Mestizo population., Study: Five polymorphisms in the IL-1 gene cluster members IL-1B (rs16944), IL1F10 (rs3811058), and IL-1RN (rs419598, rs315952, and rs315951) were genotyped by 5' exonuclease TaqMan genotyping assays in a group of 200 Mexican patients with UC and 248 ethnically matched unrelated healthy controls., Results: We found a significant increased frequencies of IL-1RN6/1 TC (rs315952) and RN6/2 CC (rs315951) and decreased frequency of IL-1B-511 TC (rs16944) genotypes in UC patients as compared with healthy controls. In the subgroup analysis, we found a significant association between the RN6/2 GG (rs315951) and IL-1B-511 CC (rs16944) genotypes and the presence of steroid-dependence in UC patients (pC=00001, OR=15.6 and pC=0.008, OR=4.09, respectively). Patients with UC showed increased frequencies of IL-1RN "CTC" and "TCG" haplotypes when compared with healthy controls (P=0.019, OR=1.43 and P<10(-7), OR=2.63, respectively). Two haplotypes (TTG and CTG) showed decreased frequency in patients when compared with healthy controls (P=9×10(-7), OR=0.11 and P=8×10(-6), OR=0.11, respectively)., Conclusions: IL-1 RN and IL-1B polymorphisms were associated with the genetic susceptibility to develop UC and might be associated with the presence of steroid-dependence in UC patients.