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Sökning: WFRF:(Karlsson Leif)

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  • Abrahamsson, Agneta, 1951-, et al. (författare)
  • Making sense of the challenge of smoking cessation during pregnancy : a phenomenographic approach.
  • 2005
  • Ingår i: Health Education Research. - : Oxford University Press. - 0268-1153 .- 1465-3648. ; 20:3, s. 367-378
  • Tidskriftsartikel (refereegranskat)abstract
    • In general, most women are familiar with the need to stop smoking when they are pregnant. In spite of this, many women find it difficult to stop. Using a phenomenographic approach, this study explored Swedish pregnant and post-pregnant women's ways of making sense of smoking during pregnancy. A total of 17 women who either smoked throughout pregnancy or stopped smoking during pregnancy were interviewed. Five different story types of how they are making sense of smoking during pregnancy were identified: smoking can be justified; will stop later; my smoking might hurt the baby; smoking is just given up; smoking must be taken charge of. Based on the study it is argued that the approach used in health education in relation to smoking cessation in antenatal care needs to move from information transfer and advice-giving to the creation of a dialogue. The starting point should be the woman's knowledge, concerns, rationalizations and prejudices. A model is suggested in which a woman may move in a space on three axes depending on life encounters, dialogue and reflections on meaning. The goal in health education would be to encourage movement along three axes: 'increase of self-efficacy towards control', 'increase awareness by reflection on meaning of the smoking issue' and 'avoidance of defense of the smoking behavior'.
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  • Clark, DW, et al. (författare)
  • Associations of autozygosity with a broad range of human phenotypes
  • 2019
  • Ingår i: Nature communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 10:1, s. 4957-
  • Tidskriftsartikel (refereegranskat)abstract
    • In many species, the offspring of related parents suffer reduced reproductive success, a phenomenon known as inbreeding depression. In humans, the importance of this effect has remained unclear, partly because reproduction between close relatives is both rare and frequently associated with confounding social factors. Here, using genomic inbreeding coefficients (FROH) for >1.4 million individuals, we show that FROH is significantly associated (p < 0.0005) with apparently deleterious changes in 32 out of 100 traits analysed. These changes are associated with runs of homozygosity (ROH), but not with common variant homozygosity, suggesting that genetic variants associated with inbreeding depression are predominantly rare. The effect on fertility is striking: FROH equivalent to the offspring of first cousins is associated with a 55% decrease [95% CI 44–66%] in the odds of having children. Finally, the effects of FROH are confirmed within full-sibling pairs, where the variation in FROH is independent of all environmental confounding.
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  • Karlsson, Björn C. G., et al. (författare)
  • Structure and Dynamics of Monomer-Template Complexation: An Explanation for Molecularly Imprinted Polymer Recognition Site Heterogeneity
  • 2009
  • Ingår i: Journal of the American Chemical Society. - : American Chemical Society (ACS). - 0002-7863 .- 1520-5126. ; 131:37, s. 13297-13304
  • Tidskriftsartikel (refereegranskat)abstract
    • We here present the first simulation of a complete molecularly imprinted polymer prepolymerization system. Molecular dynamics studies were performed for a system comprising a total of 1199 discrete molecules, replicating the components and concentrations employed in the corresponding polymer synthesis. The observed interactions correlate well with results obtained from (1)H NMR spectroscopic studies. Comparison with simulations performed in the absence of cross-linking agent (ethylene dimethacrylate) demonstrated its significance in the formation of ligand recognition sites. Moreover, the influence of events such as template-template (bupivacaine) and monomer-monomer (methacrylic acid) self-association, porogen-template interactions, and template conformational variability was revealed. The template recognition capacity of the modeled polymer system was verified by synthesis of imprinted and reference polymers and subsequent radioligand binding Analysis. Collectively, through a series of statistical analyses of molecular trajectories in conjunction with spectroscopic data it was demonstrated that an ensemble of complex structures is present in the prepolymerization mixture and that this diversity is the basis for the binding site heterogeneity observed in molecularly imprinted polymers (MIPs) prepared using the noncovalent strategy.
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