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- Benn, CS, et al.
(författare)
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Mammary epithelial paracellular permeability in atopic and non-atopic mothers versus childhood atopy
- 2004
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Ingår i: Pediatric Allergy and Immunology. - : Wiley. - 0905-6157 .- 1399-3038. ; 15:2, s. 123-126
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Tidskriftsartikel (refereegranskat)abstract
- Sodium/potassium (Na/K) ratios are considered to be a marker of mammary epithelial paracellular permeability. The aim of the present study was to investigate the association between maternal atopy and Na/K ratios in breast milk and the association between Na/K ratios in breast milk and the development of atopy in the offspring. Early and mature milk samples were obtained from 30 atopic and 43 non-atopic women. We found no differences in the Na/K ratios between atopic and non-atopic women. At 18 months of age, 22 (30%) of the children had a positive skin prick test (SPT) and 26 (36%) had symptoms of atopic diseases. Overall, high levels of Na/K compared with low and slightly raised levels of Na/K in the maternal milk tended to be associated with a positive SPT and atopic disease. However, if the mother was atopic, high levels of Na/K in early or mature milk were associated with a significantly increased risk of a positive SPT or atopic disease in the offspring [RR = 4.8 (1.9-12)] whereas no such association was observed in non-atopic mothers [RR = 0.8 (0.4-1.7), p for interaction = 0.001]. Thus, high Na/K levels in the breast milk may be associated with the development of atopy and atopic diseases in the offspring of atopic mothers.
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- Kaplan, GG, et al.
(författare)
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The risk of developing Crohn's disease after an appendectomy : A population-based cohort study in Sweden and Denmark
- 2007
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Ingår i: Gut. - : BMJ. - 0017-5749 .- 1468-3288. ; 56:10, s. 1387-1392
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Tidskriftsartikel (refereegranskat)abstract
- Background: The relationship between appendectomy and Crohn's disease is controversial. A Swedish-Danish cohort study was conducted to assess the risk of developing Crohn's disease after an appendectomy. Methods: 709 353 appendectomy patients in Sweden (since 1964) and Denmark (since 1977) were followed for first hospitalisations for Crohn's disease to 2004. Standardised incidence ratios (SIR) served as relative risks. Results: Overall, 1655 Crohn's disease cases were observed during 11.1 million person-years of follow-up. Whereas appendectomy before the age of 10 years was not associated with the risk of Crohn's disease (SIR 1.00, 95% CI 0.80-1.25), the overall SIR of developing Crohn's disease was 1.52 (95% CI 1.45-1.59), being highest in the first 6 months (SIR 8.69, 95% CI 7.68-9.84). SIR diminished rapidly thereafter, with the risk of Crohn's disease reaching background levels after 5-10 years for Crohn's disease overall, as well as for Crohn's ileitis, ileocolonic Crohn's disease, Crohn's colitis and other/unspecified Crohn's disease. A long-term increased risk of Crohn's disease up to 20 years after the appendectomy was seen only in appendectomy patients without appendicitis or mesenteric lymphadenitis. Conclusion: The transient increased risk of Crohn's disease after an appendectomy is probably explained by diagnostic bias.
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