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Sökning: WFRF:(Wetterholm A)

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  • Heinonen, Essi, et al. (författare)
  • MAGDALENA : study protocol of a randomised, placebo-controlled trial on cognitive development at 2 years of age in children exposed to SSRI in utero
  • 2018
  • Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055 .- 2044-6055. ; 8:8
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction Ten per cent of all pregnant women are depressed. Standard therapy of pregnant women with moderate depression is selective serotonin reuptakeinhibitors (SSRI). Observational studies on neurodevelopment after fetal SSRI exposure show conflicting results. Our primary objective is to compare the cognitive development in children exposed to sertraline and maternal depression with those exposed to maternal depression and placebo in utero. We hypothesise that there is a significant neurodevelopmental difference between the groups. As a secondary objective, we study the add-on effect of sertraline to internet-based cognitive behavioural therapy (ICBT) to treat moderate depression during pregnancy. Methods and analysis MAGDALENA is a randomised, placebo-controlled, double-blinded trial in Stockholm Healthcare Region with 2.3 million inhabitants. The women are recruited in weeks 9-21 of pregnancy either through Antenatal Health Clinics or through social media. They are to be diagnosed with moderate depression without ongoing antidepressive therapy or any serious comorbidity. The women in the intervention arm receive sertraline combined with a 12-week period of ICBT; the control arm is treated with placebo and ICBT. We assess the cognitive development in the offspring at the age of 2 years using Bayley Scales of Infant and Toddler Development, third edition (BSID-III). We aim at recruiting 200 women, 100 women in each treatment arm, to ensure statistical power to detect a clinically relevant difference between the groups. Ethics and dissemination This randomised trial will provide long-sought evidence about the effects of SSRI and maternal depression during pregnancy on the neurodevelopment in the offspring. The study is approved by the Regional Ethical Review Board at Karolinska Institutet in Stockholm and the Swedish Medical Products Agency. It is registered with the European Clinical Trials Database (EudraCT), Number: 2013-004444-31. Results will be disseminated at scientific conferences, published in peer-reviewed journals and made available to the public.
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  • Niegowski, Damian, 1978-, et al. (författare)
  • Structural basis for synthesis of inflammatory mediators by human leukotriene C4 synthase
  • 2007
  • Ingår i: Nature. - 0028-0836 .- 1476-4687. ; 448:7153, s. 613-616
  • Tidskriftsartikel (refereegranskat)abstract
    • Cysteinyl leukotrienes are key mediators in inflammation and have an important role in acute and chronic inflammatory diseases of the cardiovascular and respiratory systems, in particular bronchial asthma. In the biosynthesis of cysteinyl leukotrienes, conversion of arachidonic acid forms the unstable epoxide leukotriene A4 (LTA4). This intermediate is conjugated with glutathione (GSH) to produce leukotriene C4 (LTC4) in a reaction catalysed by LTC4 synthase1: this  eaction is the key step in cysteinyl leukotriene formation. Here we present the rystal structure of the human LTC4 synthase in its apo and GSH-complexed forms to 2.00 and 2.15 A ̊resolution, respectively. The structure reveals a homotrimer,  here each monomer is composed of four transmembrane segments. The structure of the enzyme in complex with substrate reveals that the active site enforces a  orseshoe-shaped conformation on GSH, and effectively positions the thiol group or activation by a nearby arginine at the membrane–enzyme interface. In addition, the structure provides a model for how the v-end of the lipophilic co-substrate is pinned at one end of a hydrophobic cleft, providing a molecular ‘ruler’ to align the  eactive epoxide at the thiol of glutathione. This provides new structural insights nto the mechanism of LTC4 formation, and also suggests that the observed inding and activation of GSH might be common for a family of homologous proteins mportant for inflammatory and detoxification responses.
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  • Resultat 1-10 av 45
  • [1]2345Nästa

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