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Träfflista för sökning "WFRF:(Gunn M.) srt2:(2005-2009)"

Sökning: WFRF:(Gunn M.) > (2005-2009)

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1.
  • Adewumi, Oluseun, et al. (författare)
  • Characterization of human embryonic stem cell lines by the International Stem Cell Initiative
  • 2007
  • Ingår i: Nature Biotechnology. - : Springer Science and Business Media LLC. - 1087-0156 .- 1546-1696. ; 25:7, s. 803-816
  • Tidskriftsartikel (refereegranskat)abstract
    • The International Stem Cell Initiative characterized 59 human embryonic stem cell lines from 17 laboratories worldwide. Despite diverse genotypes and different techniques used for derivation and maintenance, all lines exhibited similar expression patterns for several markers of human embryonic stem cells. They expressed the glycolipid antigens SSEA3 and SSEA4, the keratan sulfate antigens TRA-1-60, TRA-1-81, GCTM2 and GCT343, and the protein antigens CD9, Thy1 (also known as CD90), tissue- nonspecific alkaline phosphatase and class 1 HLA, as well as the strongly developmentally regulated genes NANOG, POU5F1 (formerly known as OCT4), TDGF1, DNMT3B, GABRB3 and GDF3. Nevertheless, the lines were not identical: differences in expression of several lineage markers were evident, and several imprinted genes showed generally similar allele-specific expression patterns, but some gene-dependent variation was observed. Also, some female lines expressed readily detectable levels of XIST whereas others did not. No significant contamination of the lines with mycoplasma, bacteria or cytopathic viruses was detected.
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2.
  • Dean, Justin M, et al. (författare)
  • Partial neuroprotection with low-dose infusion of the alpha2-adrenergic receptor agonist clonidine after severe hypoxia in preterm fetal sheep.
  • 2008
  • Ingår i: Neuropharmacology. - : Elsevier BV. - 0028-3908. ; 55:2, s. 166-74
  • Tidskriftsartikel (refereegranskat)abstract
    • We have previously shown that brief alpha(2)-adrenergic receptor blockade increased neuronal injury after severe hypoxia in preterm fetal sheep. We now examine whether infusion of an alpha(2)-adrenergic receptor agonist, clonidine, is neuroprotective. Preterm fetal sheep (70% gestation) received either saline-vehicle or clonidine at either 10 microg/kg/h (low-dose) or 100 microg/kg/h (high-dose) from 15 min until 4 h after 25 min of umbilical cord occlusion. Both low- and high-dose clonidine infusions after sham-occlusion were associated with transient EEG suppression but no neuronal loss. Low-dose but not high-dose clonidine infusions after umbilical cord occlusion were associated with a significant overall increase in numbers of surviving neurons after three days' recovery. High-dose clonidine was associated with transient hyperglycemia and increased numbers of delayed electrographic seizures. These results provide further evidence that alpha(2)-adrenergic receptor activation shortly after perinatal hypoxia-ischemia can promote neural recovery, but highlight the complex dose-response of exogenous therapy.
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