Inflammatory Bowel Diseases and diet: an integrative review.

OBJECTIVE: To gather scientific evidence on the role of diet in inflammatory bowel diseases. METHODS: Integrative review with studies published in the last 10 years in national and international journals. Original studies developed with adult human beings aged ≥18 years were included and articles published before 2010, literature reviews, and those that did not focus on elements that answered the guiding question were excluded. RESULTS: 14 articles were selected that addressed important dietary elements in inflammatory bowel disease such as fermentable carbohydrates and polyols, foods of animal origin, foods rich in omega 3, consumption of fruits and vegetables, use of probiotic supplements, whey proteins and soy. CONCLUSION: The diet, as a potentially modifiable environmental factor, plays an important role in the prevention and treatment of inflammatory bowel diseases. The reduction in the consumption of fermentable carbohydrates and polyols combined with the increase in the consumption of fruits and vegetables as well as the exclusion of products of animal origin such as beef, pork, milk and eggs can help control inflammation and improve the quality of life of patients with inflammatory bowel diseases. The use of probiotics increases food tolerance and, whey and soy proteins, can alter body composition and reduce inflammation.

Inflammatory Bowel Diseases and diet: an integrative review

SUMMARY OBJECTIVE: To gather scientific evidence on the role of diet in inflammatory bowel diseases. METHODS: Integrative review with studies published in the last 10 years in national and international journals. Original studies developed with adult human beings aged ≥18 years were included and articles published before 2010, literature reviews, and those that did not focus on elements that answered the guiding question were excluded. RESULTS: 14 articles were selected that addressed important dietary elements in inflammatory bowel disease such as fermentable carbohydrates and polyols, foods of animal origin, foods rich in omega 3, consumption of fruits and vegetables, use of probiotic supplements, whey proteins and soy. CONCLUSION: The diet, as a potentially modifiable environmental factor, plays an important role in the prevention and treatment of inflammatory bowel diseases. The reduction in the consumption of fermentable carbohydrates and polyols combined with the increase in the consumption of fruits and vegetables as well as the exclusion of products of animal origin such as beef, pork, milk and eggs can help control inflammation and improve the quality of life of patients with inflammatory bowel diseases. The use of probiotics increases food tolerance and, whey and soy proteins, can alter body composition and reduce inflammation.

RESUMO OBJETIVO: Reunir evidências científicas sobre o papel da dieta nas doenças inflamatórias intestinais. MÉTODOS: Revisão integrativa com estudos publicados nos últimos 10 anos em periódicos nacionais e internacionais. Foram incluídos estudos originais desenvolvidos com seres humanos adultos com idade ≥18anos e excluídos artigos publicados antes de 2010, revisões de literatura, e os que não apresentassem como foco elementos que respondessem a pergunta norteadora. RESULTADOS: Foram selecionados 14 artigos que abordaram elementos dietéticos importantes na doença inflamatória intestinal como carboidratos e polióis fermentáveis, alimentos de origem animal, alimentos ricos em ômega 3, consumo de frutas e vegetais, uso de suplementos com probióticos, proteínas do soro do leite e soja. CONCLUSÃO: A dieta, como fator ambiental potencialmente modificável desempenha importante papel na prevenção e tratamento das doenças inflamatórias intestinas. A redução no consumo de carboidratos e polióis fermentáveis aliado ao aumento do consumo de frutas e vegetais como também a exclusão de produtos de origem animal como carne bovina, carne suína, leite e ovo podem auxiliar no controle da inflamação e melhoria da qualidade de vida dos pacientes com doenças inflamatórias intestinais. O uso de probióticos aumenta a tolerância alimentar e, proteínas do soro do leite e soja, podem alterar a composição corporal e reduzir a inflamação.

Relationship between selenium status and biomarkers of oxidative stress in Crohn's disease.

OBJECTIVE: Crohn disease (CD) is characterized by chronic intestinal inflammation and various factors involved in its pathogenesis including oxidative stress. The oxidative stress in CD may compromise antioxidant nutrients, such as selenium. The aim of this study was to assess the status of selenium and its relationship with markers of oxidative stress in patients with CD in comparison to controls. METHODS: The study included 47 patients with CD (20 with active disease and 27 in remission) and 25 healthy individuals. Blood samples were collected for the analysis of plasma and erythrocyte selenium concentrations using inductively coupled plasma optical emission spectrometry (ICP-OES). Selenoprotein P (SepP) was evaluated by sandwich enzyme-linked immunosorbent assay, erythrocyte glutathione peroxidase (GPx1) activity was assessed by using an automatic biochemistry analyzer, and the concentration of thiobarbituric acid reactive substances (TBARS) was measured. Comparative analyses were performed using one-way analysis of variance and Tukey's post hoc test. For correlations, Pearson's coefficient test was used. The determinants for CD and lipid peroxidation were indicated by odds ratio. RESULTS: Plasma and erythrocyte selenium levels and SepP concentrations were lower in the CD patient groups than in the healthy group. GPx1 activity and the concentration of TBARS were significantly higher in the CD groups. In the univariate analysis, plasma and erythrocyte selenium and TBARS were associated with CD. CONCLUSION: Patients with CD have impaired selenium status, which is related to the increased oxidative stress observed in these patients.

Zinc gluconate supplementation impacts the clinical improvement in patients with ulcerative colitis.

Ulcerative colitis is an inflammatory bowel disease that affects the mucous membrane of the colon. The pathogenesis is not clear, but there is evidence of a complex interaction between genetic, environmental, and immunological factors. In this regard, we highlight the role of zinc in the immune system and probable control of the disease. This study evaluated the effect of zinc supplementation on the inflammatory response in patients with ulcerative colitis. A blind interventional study involving 41 patients of both sexes, who underwent either zinc gluconate supplementation (n = 23), or treatment with a placebo (corn starch) (n = 18). Patients were evaluated for dietary zinc intake, plasma and erythrocyte zinc concentrations, and serum levels of Th1/Th2/Th17 type cytokines at baseline (T0) and 30 (T1) and 60 (T2) days after intervention. Patients in the zinc supplementation group had a lower probability of having an adequate zinc intake than placebo. In this same group, there was a significant difference between plasma zinc concentrations (T1 in relation to T0, T2 in relation to T1, and T2 in relation to T0) and erythrocyte zinc (T1 in relation to T0 and T2 in relation to T1). Zinc supplementation resulted in significant changes in the concentrations of IL-2 and IL-10 without differences in the other interleukins. Zinc gluconate intervention in patients with ulcerative colitis improves the nutritional status of this mineral in these patients and positively influences their clinical outcome, reinforcing the role of zinc as an important dietary component in disease control.