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- Hemminki, K., et al.
(författare)
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Familial association between type 1 diabetes and other autoimmune and related diseases
- 2009
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Ingår i: Diabetologia. - : Springer Science and Business Media LLC. - 1432-0428 .- 0012-186X. ; 52:9, s. 1820-1828
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Tidskriftsartikel (refereegranskat)abstract
- In the era of genome-wide association studies, familial risks are used to estimate disease heritability and success in gene identification. We wanted to estimate associations between type 1 diabetes mellitus and 33 autoimmune and related diseases in parents, offspring, singleton siblings and twins. The availability of a Multigeneration Register in Sweden provides reliable access to families throughout the last century. The diseases in individual family members were obtained through linkage to the Hospital Discharge Register. Standardised incidence ratios (SIRs) were calculated as relative risks of contracting type 1 diabetes in family members of affected patients compared with those lacking affected family members. Among a total of 450,899 patients, 21,168 were diagnosed with type 1 diabetes. Familial cases amounted to 10.3% of all type 1 diabetes patients. SIR for type 1 diabetes was 8.23 in offspring of affected parents, 11.92 in singleton siblings, 39.22 in multiplex families and 21.88 in twins; the calculated risk for monozygotic twins was 32.33. Type 1 diabetes in offspring was associated with 13 diseases in parents, including Addison's disease (SIR 2.41), asthma (1.38), coeliac disease (2.73), Graves' disease/hyperthyroidism (1.86), Hashimoto disease/hypothyroidism (2.35), pernicious anaemia (3.09), primary biliary cirrhosis (3.63), rheumatoid arthritis (2.12), sarcoidosis (1.62), systemic lupus erythematosus (2.04), ulcerative colitis (1.23) and Wegener's granulomatosis (2.12). The concordant familial risks for type 1 diabetes were high and the calculated risk for multiplex families and monozygotic twins may be explained by epistatic gene x gene or gene x environment interactions. Familial associations with several autoimmune and related diseases suggest genetic sharing and challenge to gene identification.
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| 2. |
- Hemminki, Kari, et al.
(författare)
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Familial risks for hospitalized Graves' disease and goiter
- 2009
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Ingår i: European Journal of Endocrinology. - 1479-683X. ; 161:4, s. 623-629
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: Familial Clustering of a disease is an indicator of a possible heritable Cause. provided that environmental sharing can be excluded. Thus. data on familial risks are important For genetic Studies and for clinical genetic counseling. Design: We carried Out a nationwide family study on nontoxic and toxic nodular goiters, and Graves' disease in order to search for familial clustering of these diseases at the population level. Methods: The Swedish Multigeneration Register on 0-75 year old Subjects was linked to the Hospital Discharge Register from years 1987 to 2007. Standardized incidence ratios (SIRs) were calculated for offspring of affected parents and for siblings by comparing to those whose relatives had no hospitalization for thyroid disease. Results: The number of hospitalized patients in the offspring generations was 11 659 for nontoxic goiter, 9514 for Graves' disease, and 1728 For toxic nodular goiter. Familial Cases accounted for 8.2, 5.2, and 2.1% of all patients respectively The highest familial risk for offspring of affected parents was noted for Graves' disease (SIR 3.87), followed by toxic nodular goiter (3.37) and nontoxic goiter (3.15). Familial risks were higher for affected siblings: toxic nodular goiter (11.66). Graves' disease (5.51). and nontoxic goiter (5.40). Weaker familial associations were observed between the three diseases. Conclusions: To Our knowledge this is it first population-based family study On these thyroid diseases. The observed high familial aggregation for defined thyroid diseases cannot be explained by the known genetic basis, calling for further Studies into genetic and environmental etiology of thyroid diseases.
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| 4. |
- Li, Xinjun, et al.
(författare)
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Parental occupation and risk of hospitalization for asthma in children and adolescents.
- 2009
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Ingår i: Journal of Asthma. - 1532-4303. ; 46:8, s. 815-821
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Tidskriftsartikel (refereegranskat)abstract
- Our aim was to analyze risk of first hospital diagnosis of asthma in children (< 10 years) and adolescents (10 through 19 years) in Sweden between 1970 and 2004 by parental occupation, controlling for potential confounders. Data from the Multigeneration Register, in which all children born in Sweden from 1932 onward are registered with their parents, were linked to nationwide Hospital Register data. Standardized incidence ratios (SIRs) with 95% confidence intervals were calculated. A total of 47,019 first hospital diagnoses of asthma were recorded in children and 9,032 in adolescents. After accounting for age at diagnosis, sex, socioeconomic status, geographic region, parental history of a first hospital diagnosis of asthma, and period of diagnosis, 17 parental occupational groups were associated with increased risk of first hospital diagnosis of asthma in children and 9 with increased risk in adolescents. Seven parental occupational groups were associated with significantly increased risks in both children and adolescents: "nurses," "assistant nurses," "drivers," "chemical process workers," "cooks and stewards," "home helpers," and "building caretakers and cleaners." Significantly decreased SIRs were observed for those whose parents had higher socioeconomic status. We conclude that parental occupation affects risk of first hospital diagnoses of asthma in children and adolescents.
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| 5. |
- Li, Xinjun, et al.
(författare)
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Risks of Rheumatic Diseases in First- and Second-Generation Immigrants in Sweden
- 2009
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Ingår i: Arthritis and Rheumatism. - : Wiley. - 1529-0131 .- 0004-3591. ; 60:6, s. 1588-1596
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Tidskriftsartikel (refereegranskat)abstract
- Objective. To examine whether there is an association between country of birth in first-generation immigrants and first hospitalization for a rheumatic disease, and to study whether any such association remains in second-generation immigrants. Methods. In this followup study, the Swedish MigMed database at the Karolinska Institute in Stockholm was used to identify all primary hospital diagnoses of rheumatic diseases in first- and second-generation immigrants in Sweden between January 1, 1964 and December 31, 2004. Incidence ratios, standardized with regard to age, geographic region, and socioeconomic status, were estimated by sex in first- and second-generation immigrants. Results. First-generation immigrants from Iraq had a higher risk of rheumatoid arthritis than did subjects in the native-born Swede reference group, and the risk of systemic lupus erythematosus was increased in immigrants from Iraq and Africa; these raised risks persisted in the second generation. The lower risk of rheumatoid arthritis in some first-generation immigrants disappeared in the second generation. In groups of second-generation immigrants, the risk of ankylosing spondylitis was similar to the risk in the corresponding parental groups. Polish-born immigrants and second-generation Yugoslavs and Russians showed a significantly increased risk of systemic sclerosis. The raised risk of systemic sclerosis did not persist in the second generation, but was clustered in groups involved in certain blue collar occupations. Conclusion. Country of birth affected the risk of rheumatic disease. These findings indicate that both genetic and environmental factors are involved in the etiology of specific rheumatic diseases.
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| 6. |
- Nilsson, Peter, et al.
(författare)
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Maternal cardiovascular disease risk in relation to the number of offspring born small for gestational age: national, multi-generational study of 2.7 million births.
- 2009
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Ingår i: Acta paediatrica. - : Wiley. - 1651-2227 .- 0803-5253. ; 98, s. 985-989
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Aim: To investigate the risk of small for gestational age (SGA) births in relation to maternal history of cardiovascular disease (CVD) across two generations and additionally to analyse maternal CVD risk based on number of SGA offspring. Methods: We used register data from 1.4 million women and 2.7 million offspring. The outcome measures were risk of being SGA in relation to maternal total CVD (n = 10 436) across two generations, as well as risk of CVD in mothers in relation to the number of their SGA offspring, stratified by educational level. Results: Compared to no family history of CVD (reference) the hazard ratio (HR) for being SGA in female offspring was 1.11 (95% confidence interval (CI) 1.09-1.13) for a positive maternal history of CVD. The highest risk was shown in daughters when both the mother and the grandmother had a history of CVD (HR 1.32, 95% CI 1.24-1.39). There was a stepwise increased risk of CVD events in mothers in relation to the number of their SGA offspring (HR 1.41-1.86) when 'no SGA offspring' was used as reference. The risk of CVD in relation to SGA status was increased in the least educated group (HR 2.7-5.0) compared to the group with the highest level of education with no SGA offspring. Conclusion: The risk of SGA offspring and the risk of maternal CVD are mutually interdependent and both conditions increased in women with a low level of education.
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