Estudo da prevalência da doença celíaca em doadores de sangue na cidade de São Paulo / Prevalence of celiac disease among blood donors in São Paulo city

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

BACKGROUND: Celiac disease is a permanent enteropathy caused by the ingestion of gluten and leads to an immunologically mediated inflammation of the small intestine mucosa. The prevalence of celiac disease varies among different nations and ethnic backgrounds, and its diversity is determined by genetic and environmental factors. More recently, several serological population screenings have shown that the prevalence of the disease is more common than previously imagined. Sao Paulo city is one of the biggest cities in the world, with a large population and with an important history of migratory flow from other countries, mainly European ones, and from other Brazilian cities, also with an important miscegenation. Since Sao Paulo city can be thought as a reflection of ethnic and social characters of the Brazilian population, we have decided to study the prevalence of celiac disease in Sao Paulo city. The aim of the present study was to assess the prevalence of unrecognized adult celiac disease in Sao Paulo and correlate it with further information about ancestry of the population studied. METHODS: We have measured the prevalence of celiac disease by means of a survey of serum markers (IgA transglutaminase antibody-guinea pig and IgA endomysium antibody-human umbilical cord) in 4,000 volunteers donors in the central Blood Bank in Sao Paulo, Pro-Sangue Foundation. The antibody-positive subjects were asked to undergo small-bowel biopsy. RESULTS: There were 1817 female and 2183 male with mean age of 31 years. In the ancestry evaluation of the 4,000 volunteers, we had 68% subjects with Brazilian origin and the remaining from other countries, mainly Italy, Portugal, Spain, and Germany. Of the 4,000 subjects, twenty-four subjects had positive tests, with results of the two antibody tests concordant or not. Ten subjects were positive for IgA-class tissue transglutaminase only. Most donors diagnosed with celiac disease were asymptomatic and when symptomatic the most common symptoms were flatulence and constipation. So far, in 21 positive patients, duodenal biopsies were performed and in 14 patients the diagnosis of celiac disease was confirmed (Marsh criteria modified for Oberhuber). CONCLUSION: Among apparently healthy blood donors, the prevalence of celiac disease is at least 1: 286 donors, similar to that seen in the United States and Europe

ASSUNTO(S)

biopsy doença celíaca/patologia etnia e saúde prevalence testes sorológicos celiac disease/pathology prevalência celiac disease/ epidemiology doença celíaca/diagnóstico doença celíaca/epidemiologia serologic tests celiac disease/diagnosis biopsia ethinic group and health

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