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Träfflista för sökning "WFRF:(Hoehn D) srt2:(2010-2014)"

Sökning: WFRF:(Hoehn D) > (2010-2014)

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1.
  • Thompson, Paul M., et al. (författare)
  • The ENIGMA Consortium : large-scale collaborative analyses of neuroimaging and genetic data
  • 2014
  • Ingår i: BRAIN IMAGING BEHAV. - : Springer Science and Business Media LLC. - 1931-7557 .- 1931-7565. ; 8:2, s. 153-182
  • Tidskriftsartikel (refereegranskat)abstract
    • The Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) Consortium is a collaborative network of researchers working together on a range of large-scale studies that integrate data from 70 institutions worldwide. Organized into Working Groups that tackle questions in neuroscience, genetics, and medicine, ENIGMA studies have analyzed neuroimaging data from over 12,826 subjects. In addition, data from 12,171 individuals were provided by the CHARGE consortium for replication of findings, in a total of 24,997 subjects. By meta-analyzing results from many sites, ENIGMA has detected factors that affect the brain that no individual site could detect on its own, and that require larger numbers of subjects than any individual neuroimaging study has currently collected. ENIGMA's first project was a genome-wide association study identifying common variants in the genome associated with hippocampal volume or intracranial volume. Continuing work is exploring genetic associations with subcortical volumes (ENIGMA2) and white matter microstructure (ENIGMA-DTI). Working groups also focus on understanding how schizophrenia, bipolar illness, major depression and attention deficit/hyperactivity disorder (ADHD) affect the brain. We review the current progress of the ENIGMA Consortium, along with challenges and unexpected discoveries made on the way.
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2.
  • Kallur, Therese, et al. (författare)
  • Spatio-temporal dynamics, differentiation and viability of human neural stem cells after implantation into neonatal rat brain.
  • 2011
  • Ingår i: European Journal of Neuroscience. - : Wiley. - 1460-9568 .- 0953-816X. ; 34, s. 382-393
  • Tidskriftsartikel (refereegranskat)abstract
    • Neural stem cells (NSCs) have attracted major research interest due to their potential use in cell replacement therapy. In patients, human cells are the preferred choice, one source of human NSCs being the brain of fetuses. The aims of the present study were to explore the long-term differentiation, mobility and viability of NSCs derived from the human fetal striatum in response to intracerebral implantation. To investigate long-term spatio-temporal and functional dynamics of grafts in vivo by magnetic resonance imaging, these cells were labeled with superparamagnetic iron oxide (SPIO) nanoparticles prior to implantation. SPIO-labeling of human NSCs left the quantitative profile of the proliferation, cell composition and differentiation capacity of the cells in vitro unaltered. Also after transplantation, the phenotypes after long-term cell differentiation were not significantly different from naïve cells. Upon transplantation, we detected a hypointensity corresponding to the striatal graft location in all animals and persisting for at least 4 months. The hypointense signal appeared visually similar both in location and in volume over time. However, quantitative volumetric analysis showed that the detectable, apparent graft volume decreased significantly from 3 to 16 weeks. Finally, the human NSCs were not proliferating after implantation, indicating lack of tumor formation. These cells are thus a promising candidate for translationally relevant investigations for stem cell-based regenerative therapies.
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