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Träfflista för sökning "WFRF:(Frisén L) srt2:(2005-2009)"

Sökning: WFRF:(Frisén L) > (2005-2009)

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  • Bhardwaj, R. D., et al. (författare)
  • Neocortical neurogenesis in humans is restricted to development.
  • 2006
  • Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424. ; 103:33, s. 12564-8
  • Tidskriftsartikel (refereegranskat)abstract
    • Stem cells generate neurons in discrete regions in the postnatal mammalian brain. However, the extent of neurogenesis in the adult human brain has been difficult to establish. We have taken advantage of the integration of (14)C, generated by nuclear bomb tests during the Cold War, in DNA to establish the age of neurons in the major areas of the human cerebral neocortex. Together with the analysis of the neocortex from patients who received BrdU, which integrates in the DNA of dividing cells, our results demonstrate that, whereas nonneuronal cells turn over, neurons in the human cerebral neocortex are not generated in adulthood at detectable levels but are generated perinatally.
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  • Curtis, Maurice A, et al. (författare)
  • Human neuroblasts migrate to the olfactory bulb via a lateral ventricular extension.
  • 2007
  • Ingår i: Science (New York, N.Y.). - : American Association for the Advancement of Science (AAAS). - 1095-9203 .- 0036-8075. ; 315:5816, s. 1243-9
  • Tidskriftsartikel (refereegranskat)abstract
    • The rostral migratory stream (RMS) is the main pathway by which newly born subventricular zone cells reach the olfactory bulb (OB) in rodents. However, the RMS in the adult human brain has been elusive. We demonstrate the presence of a human RMS, which is unexpectedly organized around a lateral ventricular extension reaching the OB, and illustrate the neuroblasts in it. The RMS ensheathing the lateral olfactory ventricular extension, as seen by magnetic resonance imaging, cell-specific markers, and electron microscopy, contains progenitor cells with migratory characteristics and cells that incorporate 5-bromo-2'-deoxyuridine and become mature neurons in the OB.
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  • Spalding, KL, et al. (författare)
  • Dynamics of fat cell turnover in humans
  • 2008
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 453:7196, s. 783-787
  • Tidskriftsartikel (refereegranskat)
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  • Wang, F. H., et al. (författare)
  • Magnetic resonance tracking of nanoparticle labelled neural stem cells in a rat's spinal cord
  • 2006
  • Ingår i: Nanotechnology. - : IOP Publishing. - 0957-4484 .- 1361-6528. ; 17:8, s. 1911-1915
  • Tidskriftsartikel (refereegranskat)abstract
    • Neural stem cells isolated from an adult rat's spinal cord were loaded with superparamagnetic gold-coated monocrystalline iron oxide nanoparticles (Au-MION) intended for use as contrast enhancers in magnetic resonance imaging (MRI). A dose-dependent attenuation of MRI signals was observed for Au-MION down to 0.001 mu gFe/mu l and for nanoparticle-loaded clusters of only 20 cells. The labelled cells were infused into the spinal cord of anaesthetized rats and tracked by MRI at 1 h, 48 h and 1 month post-injection. Histological analysis revealed that MRI signals correlated well with gold-positive staining of transplanted cells. The present results show that Au-MION exerts powerful contrast-enhancing properties and may represent novel MRI labels for labelling and tracking the transplanted cells in vivo.
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  • Resultat 1-13 av 13

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