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Träfflista för sökning "WFRF:(Nordlund B.) ;pers:(Carlsen KH)"

Sökning: WFRF:(Nordlund B.) > Carlsen KH

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  • Angell, IL, et al. (författare)
  • De novo species identification using 16S rRNA gene nanopore sequencing
  • 2020
  • Ingår i: PeerJ. - : PeerJ. - 2167-8359. ; 8, s. e10029-
  • Tidskriftsartikel (refereegranskat)abstract
    • Nanopore sequencing is rapidly becoming more popular for use in various microbiota-based applications. Major limitations of current approaches are that they do not enable de novo species identification and that they cannot be used to verify species assignments. This severely limits applicability of the nanopore sequencing technology in taxonomic applications. Here, we demonstrate the possibility of de novo species identification and verification using hexamer frequencies in combination with k-means clustering for nanopore sequencing data. The approach was tested on the human infant gut microbiota of 3-month-old infants. Using the hexamer k-means approach we identified two new low abundant species associated with vaginal delivery. In addition, we confirmed both the vaginal delivery association for two previously identified species and the overall high levels of bifidobacteria. Taxonomic assignments were further verified by mock community analyses. Therefore, we believe our de novo species identification approach will have widespread application in analyzing microbial communities in the future.
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  • Kreyberg, I, et al. (författare)
  • Snus in pregnancy and infant birth size: a mother-child birth cohort study
  • 2019
  • Ingår i: ERJ open research. - : European Respiratory Society (ERS). - 2312-0541. ; 5:4
  • Tidskriftsartikel (refereegranskat)abstract
    • While recent studies show that maternal use of snus during pregnancy is increasing, the potential effects on infant birth size is less investigated, with conflicting results.ObjectivesWe aimed to determine if maternal use of snus during pregnancy influences the infant anthropometric and proportional size measures at birth.MethodsIn 2313 mother–child pairs from the population-based, mother–child birth cohort PreventADALL (Preventing Atopic Dermatitis and ALLergies) in Norway and Sweden, we assessed nicotine exposure by electronic questionnaire(s) at 18 and 34 weeks of pregnancy, and anthropometric measurements at birth. Associations between snus exposure and birth size outcomes were analysed by general linear regression.ResultsBirthweight was not significantly different in infants exposed to snus in general, and up to 18 weeks of pregnancy in particular, when adjusting for relevant confounders including maternal age, gestational age at birth, pre-pregnancy body mass index, parity, fetal sex and maternal gestational weight gain up to 18 weeks. We found no significant effect of snus use on the other anthropometric or proportional size measures in multivariable linear regression models. Most women stopped snus use in early pregnancy.ConclusionExposure to snus use in early pregnancy, with most women stopping when knowing about their pregnancy, was not associated with birth size. We were unable to conclude on effects of continued snus use during pregnancy because of lack of exposure in our cohort.
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  • Kreyberg, I, et al. (författare)
  • Stopping when knowing: use of snus and nicotine during pregnancy in Scandinavia
  • 2019
  • Ingår i: ERJ open research. - : European Respiratory Society (ERS). - 2312-0541. ; 5:2
  • Tidskriftsartikel (refereegranskat)abstract
    • In young women, the use of snus increases in parallel with decreasing smoking rates but the  use in pregnancy is unclear. Our aims were to determine the prevalence of snus use, smoking and other nicotine-containing product use during pregnancy, and to identify predictors for snus use in pregnancy.Prevalence was determined for 2528 women in Norway and Sweden based on the Preventing Atopic Dermatitis and ALLergies (PreventADALL) study, a population-based, mother–child birth cohort. Electronic questionnaires were completed in pregnancy week 18 and/or week 34, and potential predictors of snus use were analysed using logistic regression models.Ever use of any snus, tobacco or nicotine-containing products was reported by 35.7% of women, with similar rates of snus use (22.5%) and smoking (22.6%). Overall, 11.3% of women reported any use of nicotine-containing products in pregnancy up to 34 weeks, most often snus alone (6.5%). Most women (87.2%) stopped using snus by week 6 of pregnancy.Snus use in pregnancy was inversely associated with age and positively associated with urban living and personal or maternal history of smoking. While 11.3% of women used snus or other nicotine-containing products at some time, most stopped when recognising their pregnancy. Younger, urban living, previously smoking women were more likely to use snus in pregnancy.
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  • Magi, CAO, et al. (författare)
  • Allergic disease and risk of stress in pregnant women: a PreventADALL study
  • 2020
  • Ingår i: ERJ open research. - : European Respiratory Society (ERS). - 2312-0541. ; 6:4
  • Tidskriftsartikel (refereegranskat)abstract
    • Maternal stress during pregnancy may negatively affect the health of mother and child. We therefore aimed to identify the proportion of women reporting high maternal stress in mid and late pregnancy and explore whether symptoms of maternal allergic disease are associated with perceived maternal stress in late pregnancy.MethodThe population-based Preventing Atopic Dermatitis and Allergy in Children (PreventADALL) study enrolled 2697 pregnant women at their 18-week routine ultrasound examination in Norway and Sweden. Information about sociodemographic factors, symptoms and doctor-diagnosed asthma, allergic rhinitis, atopic dermatitis, food allergy, and anaphylaxis and stress using the 14-item perceived stress scale (PSS) was collected at 18 weeks (mid) and 34 weeks (late) pregnancy. High stress was defined as a PSS score ≥29. Scores were analysed using multivariate logistic and linear regression.ResultsAmong the 2164 women with complete PSS data, 17% reported asthma, 20% atopic dermatitis, 23% allergic rhinitis, 12% food allergy and 2% anaphylaxis. The proportion of women reporting high stress decreased from 15% at mid to 13% at late pregnancy (p<0.01). The adjusted odds ratio for high stress in late pregnancy was 2.25 (95% CI 1.41–3.58) for self-reported symptoms of asthma, 1.46 (95% CI 1.02–2.10) for allergic rhinitis and 2.25 (95% CI 1.32–3.82) for food allergy. A multivariate linear regression model confirmed that symptoms of asthma (β coefficient 2.11; 0.71–3.51), atopic dermatitis (β coefficient 1.76; 0.62–2.89) and food allergy (β coefficient 2.24; 0.63–3.84) were independently associated with increased PSS score.ConclusionAllergic disease symptoms in pregnancy were associated with increased stress, highlighting the importance of optimal disease control in pregnancy.
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  • Rehbinder, EM, et al. (författare)
  • Dry skin and skin barrier in early infancy
  • 2019
  • Ingår i: The British journal of dermatology. - : Oxford University Press (OUP). - 1365-2133 .- 0007-0963. ; 181:1, s. 218-219
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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