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  • Title: bFGF and FGFR-3 immunoreactivity in the rat brain following systemic kainic acid administration at convulsant doses: localization of bFGF and FGFR-3 in reactive astrocytes, and FGFR-3 in reactive microglia.
    Author: Ballabriga J, Pozas E, Planas AM, Ferrer I.
    Journal: Brain Res; 1997 Mar 28; 752(1-2):315-8. PubMed ID: 9106473.
    Abstract:
    Strong bFGF immunoreactivity was observed in reactive astrocytes, as shown by double-labeling immunohistochemistry of bFGF and GFAP, from days 7 up to 30 (last time point examined) following kainic acid (KA) injection at convulsant doses in the adult rat. bFGF was not found in OX-42-positive reactive microglia. A few reactive glia co-localized FGFR-3 and GFAP, whereas the majority of cells expressing FGFR-3 were OX-42-immunoreactive. This was further supported by the observation that only approximately 10% of reactive glia co-localized bFGF and FGFR-3. These results show that reactive astrocytes are a major source of bFGF during the subacute stages of tissue damage following KA injection and that reactive astrocytes and, most particularly, reactive microglia are putative targets of bFGF through FGFR-3.
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