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Sökning: L773:1469 5111

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  • Annerbrink, Kristina, 1974, et al. (författare)
  • Serotonin depletion increases respiratory variability in freely moving rats: implications for panic disorder.
  • 2003
  • Ingår i: The international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP). - 1469-5111. ; 6:1, s. 51-6
  • Tidskriftsartikel (refereegranskat)abstract
    • To elucidate if serotonergic transmission affects respiratory variability, a parameter consistently found increased in patients with panic disorder, we studied the effect of a serotonin synthesis inhibitor, para-chlorophenylalanine (PCPA), on respiratory variability at baseline and during CO2-induced hyperventilation in awake and unrestrained rats. Forty male Wistar rats were given intraperitoneal injections of PCPA (300 mg/kg) or saline 72, 48 and 24 h before registration of respiration in a plethysmograph allowing the animals to move freely. PCPA-treated rats displayed significantly higher tidal volume variability and minute volume variability, both at baseline and during CO2 exposure, compared to controls. The results support the notion that serotonin dysfunction may contribute to the enhanced respiratory variability observed in patients with panic disorder.
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  • Bergman, Olle, 1978, et al. (författare)
  • Study on the possible association of brain-derived neurotrophic factor polymorphism with the developmental course of symptoms of attention deficit and hyperactivity
  • 2011
  • Ingår i: International Journal of Neuropsychopharmacology. - New York, USA : Cambridge University Press. - 1461-1457 .- 1469-5111. ; 14:10, s. 1367-1376
  • Tidskriftsartikel (refereegranskat)abstract
    • Several studies have, with conflicting results, investigated the relationship between the Val⁶⁶Met polymorphism in brain-derived neurotrophic factor (BDNF) and attention deficit hyperactivity disorder (ADHD). We assessed longitudinal, quantitative phenotypes of hyperactivity-impulsivity and inattention in order to determine whether the Val⁶⁶Met polymorphism is associated with age-specific and/or persistent symptoms of hyperactivity-impulsivity and/or inattention in a community-based cohort of 1236 Swedish individuals for which ADHD symptom data were collected when the participants were aged 8-9, 13-14 and 16-17 yr. The Met allele was associated with symptoms of ADHD at ages 8-9 and 13-14 yr. A multivariate regression analysis revealed that the observed effect of the Met allele on ADHD symptoms reflects an influence on persistent hyperactivity-impulsivity symptoms. The present findings support the hypothesis that BDNF is involved in the pathogenesis of ADHD. The results highlight the importance of distinguishing between hyperactivity-impulsivity and inattention, respectively, and demonstrate the value of using a longitudinal approach in genetic studies of ADHD symptoms.
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