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Sökning: WFRF:(Ekbom Anders) > Montgomery Scott M.

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1.
  • Elfström, Peter, 1974-, et al. (författare)
  • Cardiomyopathy, pericarditis and myocarditis in a population-based cohort of inpatients with coeliac disease
  • 2007
  • Ingår i: Journal of Internal Medicine. - Oxford : Blackwell Publishing. - 0954-6820 .- 1365-2796. ; 262:5, s. 545-554
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: We investigated the risk of myocarditis, cardiomyopathy, and pericarditis in patients with celiac disease (CD) from a general population cohort.Subjects and methods: Through the Swedish national registers we identified 9363 children and 4969 adults with a diagnosis of CD (1964–2003). These individuals were matched with upto five reference individuals for age, sex, calendar year and county (n = 69 851). Cox regression estimated hazard ratios (HRs) for later heart disease. Main outcome measures: Myocarditis, cardiomyopathy (any or dilated), and pericarditis defined according torelevant international classification of disease codes in the Swedish national inpatient register.Results: Celiac disease diagnosed in childhood was not associated with later myocarditis (HR = 0.2; 95% CI = 0.0–1.5), cardiomyopathy of any type (HR = 0.8; 95% CI = 0.2–3.7), or pericarditis (HR = 0.4; 95% CI = 0.1–1.9). Restricting our analyses to adulthood CD and heart disease diagnosed from 1987 and onwards in departments of cardiology ⁄ internal medicine, we found no association between CD and later myocarditis (HR = 2.1; 95% CI = 0.4–11.7), dilated cardiomyopathy (HR = 1.7; 95% CI = 0.4– 6.5) or pericarditis (HR = 1.5; 95% CI = 0.5–4.0).Conclusion: This study found no association between CD, later myocarditis, cardiomyopathy or pericarditis
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2.
  • Bahmanyar, Shahram, et al. (författare)
  • Cystic fibrosis gene mutations and gastrointestinal diseases
  • 2010
  • Ingår i: Journal of Cystic Fibrosis. - : Elsevier BV. - 1569-1993 .- 1873-5010. ; 9:4, s. 288-291
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: This study examined if CF mutation heterozygosity is associated with diseases of gastrointestinal epithelial barrier function. Design and methods: Swedish registers identified 865 patients with a diagnosis of CF between 1968 and 2003 and matched with 8101 individuals without CF. Gastrointestinal disease risk was examined among 1534 biological parents and 1396 siblings of CF patients, compared with 15,526 parents and 15,542 siblings of individuals without CF. Results: First-degree relatives of CF patients were not at lower risk of the gastrointestinal diseases, in contrast with a raised risk among CF patients. Conclusion: Heterozygosity for CF gene mutations does not protect against gastrointestinal diseases where impaired barrier function may be relevant. (C) 2010 European Cystic Fibrosis Society. Published by Elsevier B.V. All rights reserved.
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3.
  • Bahmanyar, Shahram, et al. (författare)
  • Maternal smoking during pregnancy, other prenatal and perinatal factors, and the risk of Legg-Calvé-Perthes disease
  • 2008
  • Ingår i: Pediatrics. - : American Academy of Pediatrics. - 0031-4005 .- 1098-4275. ; 122:2, s. e459-e464
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: The causes of Legg-Calvé-Perthes disease are largely unknown, but this pediatric disease seems to result from interruption of the blood supply to the proximal femur and is considered a vascular disease. Because maternal smoking during pregnancy influences fetal development and is associated with cardiovascular diseases in offspring, we hypothesized that this exposure is a risk for Legg-Calvé-Perthes disease and also investigated other markers of impaired fetal development and early-life exposures.MATERIALS AND METHODS: The Swedish Inpatient Register identified 852 individuals with a diagnosis of Legg-Calvé-Perthes disease from 1983 to 2005, individually matched by year of birth, age, sex, and region of residence with 4432 randomly selected control subjects. Linkage with the Swedish Medical Birth Register provided information on prenatal factors, including maternal smoking. Conditional logistic regression examined associations of maternal smoking during pregnancy and the other measures with the risk of Legg-Calvé-Perthes disease in offspring, adjusted for socioeconomic index and other potential confounding factors.RESULTS: Maternal smoking during pregnancy was associated with an increased Legg-Calvé-Perthes disease risk, and heavy smoking was associated with a risk increase of almost 100%. Very low birth weight and cesarean section were independently associated with approximately 240% and 36% increases in the risk of Legg-Calvé-Perthes disease, respectively.CONCLUSION: Maternal smoking during pregnancy and other factors indicated by impaired fetal development may be associated with an increased risk of Legg-Calvé-Perthes disease. 
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4.
  • Bergquist, Annika, et al. (författare)
  • Increased risk of primary sclerosing cholangitis and ulcerative colitis in first-degree relatives of patients with primary sclerosing cholangitis
  • 2008
  • Ingår i: Clinical Gastroenterology and Hepatology. - New York : Elsevier. - 1542-3565 .- 1542-7714. ; 6:8, s. 939-943
  • Tidskriftsartikel (refereegranskat)abstract
    • Background & Aims: The importance of genetic factors for the development of primary sclerosing cholangitis (PSC) is incompletely understood. This study assessed the risk of PSC and inflammatory bowel disease (IBD) among first-degree relatives of patients with PSC, compared with the first-degree relatives of a cohort without PSC. Methods: Subjects from the national Swedish cohort of PSC patients (n = 678) were matched for date of birth, sex, and region to up to 10 subjects without a diagnosis of PSC (n = 6347). Linkage through general population registers identified first-degree relatives of subjects in both the PSC and comparison cohorts (n = 34,092). Diagnoses among first-degree relatives were identified by using the Inpatient Register. Results: The risk of cholangitis was statistically significantly increased in offspring, siblings, and parents of the PSC patient cohort, compared with relatives of the comparison cohort, with the hazard ratios and 95% confidence intervals, 11.5 (1.6–84.4), 11.1 (3.3–37.8), and 2.3 (0.9–6.1), respectively. The hazard ratios for ulcerative colitis (UC) among first-degree relatives of all PSC patients was 3.3 (2.3–4.9) and for Crohn's disease 1.4 (0.8–2.5). The risk of UC for relatives of PSC patients without IBD was also increased, 7.4 (2.9–18.9). Conclusions: First-degree relatives of patients with PSC run an increased risk of PSC, indicating the importance of genetic factors in the etiology of PSC. First-degree relatives of PSC patients without IBD are also at an increased risk of UC, which might indicate shared genetic susceptibility factors for PSC and UC. 
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5.
  • Bergquist, Annika, et al. (författare)
  • Perinatal events and the risk of developing primary sclerosing cholangitis
  • 2006
  • Ingår i: World Journal of Gastroenterology. - : Baishideng Publishing Group Inc.. - 1007-9327 .- 2219-2840. ; 12:37, s. 6037-6040
  • Tidskriftsartikel (refereegranskat)abstract
    • AIM: To investigate whether perinatal events, intrauterine or postpartum, are associated with the development of primary sclerosing cholangitis (PSC) later in life.METHODS: Birth records from 97 patients with adult PSC in Sweden were reviewed. Information on perinatal events including medications and complications during pregnancy, gestation length, birth weight and length were collected. Two control children of the same sex were selected for each subject. Conditional multiple logistic regression was used to assess associations of the perinatal measures with development of PSC.RESULTS: No significant associations were found between gestational age, birth length, breastfeeding, and the majority of medical complications including infections or medication during pregnancy for the mothers or postpartum for the children. Vaginal bleeding and peripheral oedema showed associations with PSC, with matched odds ratios of 5.70 (95% CI, 1.13-28.83) and 2.28 (95% CI, 1.04-5.03), respectively. CONCLUSION: The associations of vaginal bleeding and oedema with subsequent PSC cannot readily be explained, so our findings do not strongly support the hypothesis of a significant role of perinatal events as a risk for the development of PSC later in life.
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6.
  • Elfstrom, Peter, et al. (författare)
  • Risk of lymphoproliferative malignancy in relation to small intestinal histopathology among patients with celiac disease
  • 2011
  • Ingår i: Journal of the National Cancer Institute. - : Oxford University Press (OUP). - 0027-8874 .- 1460-2105. ; 103:5, s. 436-444
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Celiac disease is associated with an increased risk of malignant lymphomas. The risk of lymphoproliferative malignancies in patients with small intestinal inflammation without villous atrophy and in patients with latent celiac disease is unknown. Methods We performed a cohort study using duodenal and jejunal biopsy data that were collected from all 28 Swedish pathology departments (July 1969 to February 2008). We identified two population-based cohorts composed of 28 989 individuals with biopsy-verified celiac disease (villous atrophy, Marsh stage 3) and 13 140 individuals with small intestinal inflammation without villous atrophy (Marsh 1 + 2) and a regional cohort of 3711 individuals with latent celiac disease (positive celiac disease serology and normal mucosa). Cancer data were obtained by linkage to the National Cancer Registry. We used Cox regression to estimate hazard ratios (HRs) for lymphoproliferative malignancy and any solid cancer among the three cohorts compared with a total of 227 911 age-and sex-matched reference individuals. Results Although biopsy-verified celiac disease and intestinal inflammation were associated with lymphoproliferative malignancy (for celiac disease, HR = 2.82; 95% confidence interval [CI] = 2.36 to 3.37, n = 193; for inflammation, HR = 1.81; 95% CI = 1.42 to 2.31, n = 89), latent celiac disease was not associated with lymphoproliferative malignancy (HR = 0.97; 95% CI = 0.44 to 2.14, n = 7). The absolute rates of lymphoproliferative malignancies among persons with celiac disease, small intestinal inflammation, and latent celiac disease were 70.3 per 100 000 person-years, 83.4 per 100 000 person-years, and 28.0 per 100 000 person-years, respectively. Compared with individuals with celiac disease, individuals with small intestinal inflammation or latent celiac disease were at a statistically significantly lower risk of lymphoproliferative malignancy. Risk of any solid cancer was not increased beyond the first year of follow-up in any cohort. Celiac disease was associated with Hodgkin lymphoma and both T-cell and B-cell non-Hodgkin lymphomas. Conclusion The risk of lymphoproliferative malignancy in celiac disease is dependent on small intestinal histopathology, with no increased risk in latent celiac disease.
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7.
  • Elfström, Peter, 1974-, et al. (författare)
  • Hematopoietic cancer including lymphoma in celiac disease according to Marsh criteria 0-3
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Background: Celiac disease (CD) is associated with an increased risk of lymphoma, but it is unknown if borderline mucosal damage and latent CD are risk factors for lymphoma.Methods: We examined the risk of hematopoietic cancer in a nationwide population–based cohort of 28,800 individuals with biopsy-verified CD (villous atrophy, Marsh 3), 12,663 individuals with small intestinal inflammation (Marsh 1+2), and 3,551 with latent CD (positive antiendomysial, tissue transglutaminase or antigliadin test but normal mucosa on biopsy). The study participants were identified through all pathology departments (n=28) in Sweden and were biopsied in 1969-2006 (median: 1998). Cox regression estimated the hazard ratio (HR) for hematopoietic malignancies.Results: While biopsy-verified CD and intestinal inflammation were both statistically significantly associated with lymphoma (CD: HR = 3.18; 95% CI = 2.63-3.83; inflammation: 1.66; 1.28-2.17), latent CD was not (1.04; 0.44-2.43). CD was associated with both non-Hodgkin’s (NHL) and Hodgkin’s lymphoma (HL) (4.81; 3.81-6.07 and 4.39; 2.59-7.45 respectively). Risk estimates for NHL and HL were lower in inflammation (1.65; 1.15-2.38 and 1.48; 0.60-3.62 respectively) and latent CD (1.79; 0.74-4.34 and 1.08; 0.13-9.00 respectively). No increased risk of lymphoma was seen in children with a small intestinal biopsy. This study found no association between leukemia and small intestinal pathology.Conclusion: CD is associated with an increased risk of lymphoma. This risk increase was also seen in individuals with small intestinal inflammation. Latent CD is not associated with lymphoma of any kind, and positive CD serology alone cannot be used to predict future risk of lymphoma.
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8.
  • Elfström, Peter, 1974-, et al. (författare)
  • Risk of primary adrenal insufficiency in patients with celiac disease
  • 2007
  • Ingår i: Journal of Clinical Endocrinology and Metabolism. - Chevy Chase, Md. : Endocrine Society. - 0021-972X .- 1945-7197. ; 92:9, s. 3595-3598
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: Earlier research has suggested a positive association between Addison’s disease (AD) and celiac disease (CD).Wehave here investigated the risk of AD in individuals with CD from a general population cohort.Methods: Through the Swedish national registers we identified 14,366 individuals with a diagnosis of CD (1964–2003) and 70,095 reference individuals matched for age, sex, calendar year, and county of residence. We used Cox regression to estimate hazard ratios (HRs) for subsequent AD. Analyses were restricted to individuals with more than 1 yr of follow-up and without AD prior to study entry or within 1 yr after study entry. Conditional logistic regression estimated the odds ratio for CD in individuals with prior AD.Results: There was a statistically significantly positive association between CD and subsequent AD [HR _ 11.4; 95% confidence interval (CI) _ 4.4 –29.6]. This risk increase was seen in both children and adults and did not change with adjustment for diabetes mellitus or socioeconomic status. When we restricted reference individuals to inpatients, the adjusted HR for AD was 4.6 (95% CI _ 1.9 –11.4). Individuals with prior AD were at increased risk of CD (odds ratio _ 8.6; 95% CI _ 3.4 –21.8).Conclusions: This study found a highly increased risk of AD in individuals with CD. This relationship was independent of temporal sequence. We therefore recommend that individuals with AD should be screened for CD. We also suggest an increased awareness of AD in individuals with CD.
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9.
  • Elfström, Peter, 1974-, et al. (författare)
  • Risk of Thyroid Disease in Individuals with Celiac Disease
  • 2008
  • Ingår i: Journal of Clinical Endocrinology and Metabolism. - : The Endocrine Society. - 0021-972X .- 1945-7197. ; 93:10, s. 3915-3921
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: It has been suggested that celiac disease is associated with thyroid disease. Earlier studies, however, have been predominately cross-sectional and have often lacked controls. There is hence a need for further research. In this study, we estimated the risk of thyroid disease in individuals with celiac disease from a general population cohort.Methods: A total of 14,021 individuals with celiac disease (1964–2003) and a matched reference population of 68,068 individuals were identified through the Swedish national registers. Cox regression estimated the risk of thyroid disease in subjects with celiac disease. Analyses were restricted to individuals with a follow-up ofmorethan 1 yr and withnothyroid disease before study entry or within 1 yr after study entry. Conditional logistic regression estimated the odds ratio for subsequent celiac disease in individuals with thyroid disease.Results: Celiac disease was positively associated with hypothyroidism [hazard ratio (HR)_4.4;95% confidence interval (CI) _ 3.4 –5.6; P _ 0.001], thyroiditis (HR _ 3.6; 95% CI _1.9–6.7; P _ 0.001) and hyperthyroidism (HR_2.9;95%CI_2.0–4.2; P_0.001). The highest risk estimates were found in children (hypothyroidism, HR _ 6.0 and 95% CI _ 3.4 –10.6; thyroiditis, HR _ 4.7 and 95% CI _ 2.1–10.5; hyperthyroidism, HR _ 4.8 and 95% CI _ 2.5–9.4). In post hoc analyses, where the reference population was restricted to inpatients, the adjusted HR was 3.4 for hypothyroidism (95% CI_2.7– 4.4; P_0.001), 3.3 for thyroiditis(95%CI_1.5–7.7; P_0.001), and 3.1 for hyperthyroidism (95% CI _ 2.0–4.8; P _ 0.001).Conclusion: Celiac disease is associated with thyroid disease, and these associations were seen regardless of temporal sequence. This indicates shared etiology and that these individuals are more susceptible to autoimmune disease.
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10.
  • Hailer, Yasmin D., et al. (författare)
  • Legg-Calvé-Perthes disease and the risk of injuries requiring hospitalization : a register study involving 2579 patients
  • 2012
  • Ingår i: Acta Orthopaedica. - New York, USA : Informa Healthcare. - 1745-3674 .- 1745-3682. ; 83:6, s. 572-576
  • Tidskriftsartikel (refereegranskat)abstract
    • Background and purpose: Previous studies have suggested that Legg-Calvé-Perthes disease (LCPD) is associated with repetitive trauma, coagulation problems and anatomical abnormalities of the blood supply to the femoral head. The hypothesis that repetitive trauma can affect the blood supply of the femoral head, leading to LCPD, is supported by an animal model. For evidence of an increased risk of repetitive trauma, we investigated whether patients with LCPD have a higher risk for severe injuries requiring hospitalization.Patients and methods: We identified 2579 patients with LCPD in Sweden during the period 1964-2005. 13,748 individuals without LCPD were randomly selected from the Swedish general population, matched by year of birth, sex and region (control group). Cox proportional hazard regression estimated the risks.Results: Compared to the control group, patients with LCPD had a modestly raised hazard ratio (HR) of 1.2 (95% CI 1.1-1.3) for injury requiring hospitalization. The risks were slightly higher for soft tissue injuries (HR = 1.3, 95% CI:1.1-1.4) than for fractures (HR = 1.1, 95% CI: 1.0-1.3) and more pronounced among females. Compared to the control group, the higher risk for injury only applied to the lower extremities (HR = 1.2, 95% CI: 1.0-1.4) in patients with LCPD.Interpretation: Patients with LCPD are vulnerable to injuries which could be interpreted as a marker of hyperactive behavior. It could also implicate that anatomical changes in the bone formation or blood supply of the femoral head - increasing its sensibility for trauma - contribute to the etiology of LCPD.
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