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Sökning: WFRF:(Ng KC) > (2015-2019)

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  • Thomas, HS, et al. (författare)
  • 2019
  • swepub:Mat__t
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  • Czamara, D, et al. (författare)
  • Integrated analysis of environmental and genetic influences on cord blood DNA methylation in new-borns
  • 2019
  • Ingår i: Nature communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 10:1, s. 2548-
  • Tidskriftsartikel (refereegranskat)abstract
    • Epigenetic processes, including DNA methylation (DNAm), are among the mechanisms allowing integration of genetic and environmental factors to shape cellular function. While many studies have investigated either environmental or genetic contributions to DNAm, few have assessed their integrated effects. Here we examine the relative contributions of prenatal environmental factors and genotype on DNA methylation in neonatal blood at variably methylated regions (VMRs) in 4 independent cohorts (overall n = 2365). We use Akaike’s information criterion to test which factors best explain variability of methylation in the cohort-specific VMRs: several prenatal environmental factors (E), genotypes in cis (G), or their additive (G + E) or interaction (GxE) effects. Genetic and environmental factors in combination best explain DNAm at the majority of VMRs. The CpGs best explained by either G, G + E or GxE are functionally distinct. The enrichment of genetic variants from GxE models in GWAS for complex disorders supports their importance for disease risk.
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  • Davidsson, Johan, 1967, et al. (författare)
  • The Clemedson Blast Tube
  • 2019
  • Ingår i: Neuromethods. - New York, NY : Springer New York. - 1940-6045 .- 0893-2336. ; , s. 151-166
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • Traumatic brain injuries (TBI) because of detonations have become a significant problem in military medicine. Partly because the use of modern body protection has increased the survival of victims subjected to detonations from landmines or improvised explosive devices. Detonations commonly expose these victims to pressure waves, high speed fragments, and bodily accelerations. The pressure wave itself may result in a mild TBI, commonly referred to as primary blast, while penetration of fragments into the brain and head rotations resulting from body accelerations can lead to more severe forms of TBI. The details of the cellular injury mechanisms of primary blast are still debated and studies are needed to understand the propagation and effects of the pressure waves inside the skull. Laboratory experiments with good control for physical parameters can provide information that is difficult to retrieve from real-life cases of blast injury. This study focused on head kinematics and pressure propagation into the animal brain cavity during simulated blast trauma (part 1) and the behavioral outcome (part 2). The rat blast model presented here produced maximum intracranial pressure increases of 6 bar while minimal pressure drops. Violent head-to-head restraint contact occurred at approximately 1.7 ms after the pressure pulse reached the head; this contact did not produce any high intracranial pressures. Working memory error was not significantly changed between the exposed and controls at 1 week after blast while significantly more reference memory errors at 5 days and 2 weeks following injury compared to sham after blast.
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  • Resultat 1-23 av 23

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