BDNF increases the expression of neuropeptide Y mRNA and promotes differentiation/maturation of neuropeptide Y-positive cultured cortical neurons from embryonic and postnatal rats - PubMed (original) (raw)
BDNF increases the expression of neuropeptide Y mRNA and promotes differentiation/maturation of neuropeptide Y-positive cultured cortical neurons from embryonic and postnatal rats
N Takei et al. Brain Res Mol Brain Res. 1996 Apr.
Abstract
The effects of neurotrophic factor on the expression of neuropeptide Y (NPY) mRNA and on morphology of NPY-immunoreactive neurons were investigated. Brain-derived neurotrophic factor (BDNF) increased the expression of NPY mRNA in cultured cortical neurons from both embryonic and postnatal rats. BDNF also increased the number of NPY neurons. Furthermore, multipolar neurites from NPY neurons were observed in cultures treated with BDNF, whereas only monopolar and bipolar neurites were observed in control cultures. These results suggest that BDNF not only increases the expression of NPY mRNA but also promotes the differentiation/maturation of NPY ergic neurons both in number and morphology. NPY expression was strongly increased by neurotrophin-4/5 similarly to BDNF and neurotrophin-3 evoked a slight increase. In contrast, basic fibroblast growth factor, cilliary neurotrophic factor and interferon-gamma had no effect on NPY expression.
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