Abstract
Neurodegenerative diseases of different genesis are the result of cellular damages including those caused by oxygen and glucose deficit. Neuronal survival or death in brain pathologies depends on a variety of interrelated molecular mechanisms. A key role in modulation of neuron viability belongs to HIF (hypoxia-inducible factor) and NCAM (neural cell adhesion molecules) signaling pathways. In this work, we used organotypic and dissociated hippocampal cultures to analyze cell viability and HIF-1α immunopositive (HIF-1α+ ) signal after 30 min oxygen-glucose deprivation (OGD) followed by 24 h of reoxygenation in the presence of FGL (synthetic NCAM-derived mimetic peptide). According to LDH- and MTS-assay of cell viability, FGL showed a neuroprotective effect, which was attributed to the association with FGFR. We showed that these effects correlated with changes of the HIF-1α+ level suggesting the communications of HIF and NCAM signaling pathways. These data extend our knowledge of neurodegeneration mechanisms and open additional potential for the development of neuroprotection strategies.
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