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Sökning: WFRF:(Kull I) > Göteborgs universitet

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1.
  • van der Valk, Ralf J P, et al. (författare)
  • A novel common variant in DCST2 is associated with length in early life and height in adulthood.
  • 2015
  • Ingår i: Human molecular genetics. - : Oxford University Press (OUP). - 1460-2083 .- 0964-6906. ; 24:4, s. 1155-68
  • Tidskriftsartikel (refereegranskat)abstract
    • Common genetic variants have been identified for adult height, but not much is known about the genetics of skeletal growth in early life. To identify common genetic variants that influence fetal skeletal growth, we meta-analyzed 22 genome-wide association studies (Stage 1; N = 28 459). We identified seven independent top single nucleotide polymorphisms (SNPs) (P < 1 × 10(-6)) for birth length, of which three were novel and four were in or near loci known to be associated with adult height (LCORL, PTCH1, GPR126 and HMGA2). The three novel SNPs were followed-up in nine replication studies (Stage 2; N = 11 995), with rs905938 in DC-STAMP domain containing 2 (DCST2) genome-wide significantly associated with birth length in a joint analysis (Stages 1 + 2; β = 0.046, SE = 0.008, P = 2.46 × 10(-8), explained variance = 0.05%). Rs905938 was also associated with infant length (N = 28 228; P = 5.54 × 10(-4)) and adult height (N = 127 513; P = 1.45 × 10(-5)). DCST2 is a DC-STAMP-like protein family member and DC-STAMP is an osteoclast cell-fusion regulator. Polygenic scores based on 180 SNPs previously associated with human adult stature explained 0.13% of variance in birth length. The same SNPs explained 2.95% of the variance of infant length. Of the 180 known adult height loci, 11 were genome-wide significantly associated with infant length (SF3B4, LCORL, SPAG17, C6orf173, PTCH1, GDF5, ZNFX1, HHIP, ACAN, HLA locus and HMGA2). This study highlights that common variation in DCST2 influences variation in early growth and adult height.
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2.
  • Ekstrom, S., et al. (författare)
  • Body mass index status and peripheral airway obstruction in school-age children: a population-based cohort study
  • 2018
  • Ingår i: Thorax. - : BMJ. - 0040-6376 .- 1468-3296. ; 73:6, s. 538-545
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Few large prospective studies have investigated the impact of body mass index (BMI) on lung function during childhood. Methods Using data collected between 2002 and 2013, we analysed associations between BMI status and lung function (assessed by spirometry) from 8 to 16 years, as well as cross-sectional associations with small airway function (impulse oscillometry) at 16 years in the BAMSE cohort (n=2889). At 16 years, cross-sectional associations with local and systemic inflammation were investigated by analysing FE NO, blood eosinophils and neutrophils. Results Overweight and obesity at 8 years were associated with higher FVC, but lower FEV 1 /FVC ratio at 8 and 16 years. In boys, but not girls, obesity at 8 years was associated with a further reduction in FEV 1 /FVC between 8 and 16 years. In cross-sectional analyses, overweight and obesity were associated with higher frequency dependence of resistance (R 5-20) and larger area under the reactance curve (AX0.5) at 16 years. Increased blood neutrophil counts were seen in overweight and obese girls, but not in boys. No association was found between BMI status and FE NO. Persistent, but not transient, overweight/obesity between 8 and 16 years was associated with higher R 5-20 and AX0.5 and lower FEV 1 /FVC (-2.8% (95% CI -4.1 to -1.2) in girls and -2.7% (95% CI -4.4 to -1.1) in boys) at 16 years, compared with persistent normal weight. Conclusion I n childhood and adolescence, overweight and obesity, particularly persistent overweight, were associated with evidence of airway obstruction, including the small airways.
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3.
  • Enoksson Wallas, A., et al. (författare)
  • Traffic noise and other determinants of blood pressure in adolescence
  • 2019
  • Ingår i: International Journal of Hygiene and Environmental Health. - : Elsevier BV. - 1438-4639 .- 1618-131X. ; 222:5, s. 824-830
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Exposure to traffic noise has been associated with hypertension in adults but the evidence in adolescents is limited. We investigated long-term road traffic noise exposure, maternal occupational noise during pregnancy and other factors in relation to blood pressure and prehypertension at 16 years of age. Methods: Systolic and diastolic blood pressure were measured in 2597 adolescents from the Swedish BAMSE birth cohort. Levels of road traffic noise were estimated at home addresses during lifetime and for the mother during pregnancy as well as maternal occupational noise exposure during pregnancy. Exposure to NO x from local sources was also assessed. Associations between noise or NO x exposure and blood pressure or prehypertension were analysed using linear and logistic regression. Results: The prevalence of prehypertension was higher among males and in those with overweight, low physical activity or overweight mothers. No strong or consistent associations were observed between pre- or postnatal exposure to road traffic noise and blood pressure at 16 years of age. However, inverse associations were suggested for systolic or diastolic blood pressure and prehypertension, which reached statistical significance among males (OR 0.80 per 10 dB L den , 95% CI 0.65–0.99) and those with maternal occupational noise exposure ≥ 70 dB L Aeq8h (OR 0.60, 95% CI 0.41–0.87). On the other hand, occupational noise exposure during pregnancy tended to increase systolic blood pressure and prehypertension risk in adolescence. No associations were seen for NO x exposure. Conclusion: No conclusive associations were observed between pre- or postnatal noise exposure and blood pressure or prehypertension in adolescents. © 2019
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4.
  • Hallberg, J, et al. (författare)
  • Asthma phenotypes and lung function up to 16 years of age-the BAMSE cohort.
  • 2015
  • Ingår i: Allergy. - : Wiley. - 1398-9995 .- 0105-4538. ; 70:6, s. 667-673
  • Tidskriftsartikel (refereegranskat)abstract
    • Asthma is a disease affecting many locations throughout the airway. Most studies have used spirometry as the primary assessment of airway obstruction, a method that may be less sensitive in regard to peripheral airway obstruction. The aim of this study was to elucidate the associations between asthma phenotypes based on age of onset and duration of symptoms, and (i) spirometry and (ii) small airway involvement measured by impulse oscillometry (IOS) in adolescence.
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5.
  • Harms, M. J., et al. (författare)
  • Mature Human White Adipocytes Cultured under Membranes Maintain Identity, Function, and Can Transdifferentiate into Brown-like Adipocytes
  • 2019
  • Ingår i: Cell Reports. - : Elsevier BV. - 2211-1247. ; 27:1, s. 213-
  • Tidskriftsartikel (refereegranskat)abstract
    • White adipose tissue (WAT) is a central factor in the development of type 2 diabetes, but there is a paucity of translational models to study mature adipocytes. We describe a method for the culture of mature white adipocytes under a permeable membrane. Compared to existing culture methods, MAAC (membrane mature adipocyte aggregate cultures) better maintain adipogenic gene expression, do not dedifferentiate, display reduced hypoxia, and remain functional after long-term culture. Subcutaneous and visceral adipocytes cultured as MAAC retain depot-specific gene expression, and adipocytes from both lean and obese patients can be cultured. Importantly, we show that rosiglitazone treatment or PGC1 alpha overexpression in mature white adipocytes induces a brown fat transcriptional program, providing direct evidence that human adipocytes can transdifferentiate into brown-like adipocytes. Together, these data show that MAAC are a versatile tool for studying phenotypic changes of mature adipocytes and provide an improved translational model for drug development.
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6.
  • Morf, Andrea, 1968, et al. (författare)
  • Towards sustainability of marine governance: Challenges and enablers for stakeholder integration in transboundary marine spatial planning in the Baltic Sea
  • 2019
  • Ingår i: Ocean & Coastal Management. - : Elsevier BV. - 0964-5691. ; 177, s. 200-212
  • Tidskriftsartikel (refereegranskat)abstract
    • Integrating stakeholder knowledge, views and needs in marine or maritime spatial planning (MSP) processes is important from a governance and social sustainability perspective both for MSP practitioners and for the evolving field of MSP research. Transboundary MSP appears particularly challenging for participation, which is why it is important to identify opportunities and address obstacles for stakeholder integration in this specific context. This article examines how stakeholder integration is currently practiced in the Baltic Sea Region (BSR), an enclosed sea where policy coherence and addressing conflicting interests across borders are especially relevant. It synthesises a range of challenges and enablers for stakeholder participation and mobilisation that have emerged from two transboundary MSP research and development projects, BaltSpace and Baltic SCOPE. The article finds that with the exception of statutory authorities, stakeholder engagement in the BSR is mostly limited to self-motivated stakeholders and consultation rather than more inclusive forms of participation. This can reduce the quality and legitimacy of MSP processes and risks to concentrate power in the hands of a small group of actors. For transboundary stakeholder integration to become more interactive and effective, five types of challenges need attention, regarding a) timing, b) governance systems, c) capacity and processes, d) stakeholder characteristics and e) knowledge and language. These obstacles can be addressed by (1) a dedicated research and development agenda that critically reflects on integrative tools and processes, and (2) by encouraging transnational institutions in the BSR to devote more resources to transboundary stakeholder integration and adopt flexible and adaptive strategies and tools that can facilitate stakeholder involvement throughout the MSP policy cycle.
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7.
  • Olen, O., et al. (författare)
  • Allergy-related diseases and recurrent abdominal pain during childhood - a birth cohort study
  • 2014
  • Ingår i: Alimentary Pharmacology & Therapeutics. - : Wiley. - 0269-2813 .- 1365-2036. ; 40:11, s. 1349-1358
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundAllergy and immune dysregulation may have a role in the pathophysiology of recurrent abdominal pain of functional origin, but previous studies of allergy-related diseases and abdominal pain have contradictory results. AimTo examine the association between allergy-related diseases or sensitisation during childhood and abdominal pain at age 12years. MethodsIn this birth cohort study of 4089 children, parents answered questionnaires regarding asthma, allergic rhinitis, eczema and food hypersensitivity (allergy-related diseases') at ages 0,1,2,4,8 and 12years. Blood for analyses of allergen-specific IgE was sampled at 4 and 8years. At 12years, the children answered questions regarding abdominal pain. Children with coeliac disease or inflammatory bowel disease were excluded. Associations were examined using multivariable logistic regression. ResultsAmong 2610 children with complete follow-up, 9% (n=237) reported abdominal pain at 12years. All allergy-related diseases were associated with concurrent abdominal pain at 12years and the risk increased with increasing number of allergy-related diseases (P for trend <0.001). Asthma at 1 and 2years and food hypersensitivity at 8years were significantly associated with abdominal pain at 12years. There was an increased risk of abdominal pain at 12years in children sensitised to food allergens at 4 or 8years, but in stratified analyses, this was confined to children whose parents had not reported food hypersensitivity at time of sensitisation. ConclusionAllergy-related diseases as well as sensitisation to food allergens were associated with an elevated risk of abdominal pain, and the risk increased with the number of allergy-related diseases.
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8.
  • Schultz, E. S., et al. (författare)
  • Early life determinants of lung function change from childhood to adolescence
  • 2018
  • Ingår i: Respiratory Medicine. - : Elsevier BV. - 0954-6111 .- 1532-3064. ; 139, s. 48-54
  • Tidskriftsartikel (refereegranskat)abstract
    • Rationale: Little is known about how perinatal and childhood factors influence lung function change between childhood and adolescence. Objectives: To investigate possible early life predictors of change in FEV1 between age 8 and 16 years. In addition, to investigate possible predictors of having persistently low lung function (FEV1 < 25th percentiles both at age 8 and 16) up to adolescence. Methods: The BAMSE birth cohort study collected data throughout childhood on environmental factors, individual characteristics, and spirometric measures at 8 and 16 years (n = 1425). Associations between early life predictors (n = 31) and FEV1 increase between 8 and 16 years were assessed with linear regression. Predictors of having persistently low lung function were examined. Results: Few factors were consistently associated with altered lung function growth, although low birth weight, asthma heredity (paternal), secondhand smoke in infancy, and season of birth had a significant impact (p-value <= 0.01). The majority of subjects stayed however within the same category of lung function between ages 8 and 16 years (in total 821/1425 = 58%). Predictors associated with having persistently low lung function were gestational age, secondhand smoke (at 2 and 8 years of age), and factors related to lower respiratory tract infections in infancy. Conclusions: In summary, rather few exposures in childhood were identified to have a significant impact on lung function growth between childhood and adolescence. Our data support previous study findings indicating that lung function development is influenced by factors before birth and in infancy, including second hand tobacco smoke.
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9.
  • Sjölund, Jessica, 1988, et al. (författare)
  • Allergy-related diseases in childhood and risk for abdominal pain-related functional gastrointestinal disorders at 16 years-a birth cohort study
  • 2021
  • Ingår i: Bmc Medicine. - : Springer Science and Business Media LLC. - 1741-7015. ; 19:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Studies on allergy-related diseases in relation to abdominal pain-related functional gastrointestinal disorders (AP-FGIDs) in children are few and results are contradictory. We examined the associations between childhood allergy-related diseases and adolescent AP-FGIDs in general and irritable bowel syndrome (IBS) in particular. Method Prospective population-based birth cohort study of 4089 children born in Sweden 1994-1996. We analysed data from 2949 children with complete follow-up at 16 years (y) and no diagnosis of inflammatory bowel disease or coeliac disease at 12y or 16y. Asthma, rhinitis, eczema, and food hypersensitivity (FH) were assessed through questionnaires at 1-2y, 4y, 8y, 12y, and 16y. AP-FGIDs and IBS were assessed through questionnaires at 16y and defined according to the Rome III criteria. Associations between childhood allergy-related diseases and any AP-FGID and IBS and 16y respectively were examined using binomial generalized linear models with a log link function and described as relative risk with 95% confidence intervals. Results The prevalence of any AP-FGID and IBS at 16y were 12.0% and 6.0% respectively. Eczema at 1-2y, 4y, and 8y, and FH at 12y and 16y were associated with an increased risk for any AP-FGID at 16y. Asthma and FH at 12y and 16y were associated with an increased risk for IBS at 16y. The relative risk for IBS at 16y increased with increasing number of concurrent allergy-related diseases at 16y, but linear trend for relative risk was only borderline statistically significant (P for trend = 0.05). Conclusions This prospective population-based study demonstrated positive associations between childhood allergy-related diseases and adolescent AP-FGIDs, including IBS, implicating shared pathophysiology among these disorders.
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10.
  • Sjölund, Jessica, 1988, et al. (författare)
  • Prevalence and Progression of Recurrent Abdominal Pain, From Early Childhood to Adolescence
  • 2021
  • Ingår i: Clinical Gastroenterology and Hepatology. - : Elsevier BV. - 1542-3565. ; 19:5, s. 930-
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND & AIMS: Little is known about the natural history of childhood recurrent abdominal pain (RAP). We investigated the prevalence and progression of childhood RAP and its association with Rome III abdominal pain-related functional gastrointestinal disorders (AP-FGID) and irritable bowel syndrome (IBS) during adolescence. METHODS: We collected data from a prospective population-based birth cohort study of 4089 children, born from 1994 through 1996 in Sweden. We analyzed data from 2455 children with complete follow-up evaluation at ages 1, 2, 12, and 16 years and no parent-reported diagnoses of inflammatory bowel diseases or celiac disease at ages 12 or 16 years. A subpopulation of 2374 children who had answered questions based on the Rome III criteria at age 16 years was identified. We assessed RAP at 3 assessment points and defined it as parent-reported attacks of colic in early childhood (1-2 years) and as self-reported weekly abdominal pain at ages 12 years and 16 years. AP-FGID at age 16 years was defined according to the Rome III criteria. RESULTS: RAP was reported by 26.2% of children on at least 1 of 3 assessment points, of which 11.3% reported symptoms more than once. Children with RAP at 12 years had persistent symptoms at 16 years in 44.9% of cases and increased risks for RAP (relative risk, 2.2; 95% CI, 1.7-2.8), any AP-FGID (relative risk, 2.6; 95% CI, 1.9-3.6), and IBS (relative risk, 3.2; 95% CI, 2.0-5.1) at 16 years. Early childhood RAP was not associated significantly with any outcome. CONCLUSIONS: RAP affects many children from early childhood through age 16 years, but most children do not have persistent symptoms throughout childhood. RAP at age 12 years is a risk factor for RAP, any Rome III AP-FGID, and IBS, at age 16 years.
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