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Abstract Title:

Daidzein induces neuritogenesis in DRG neuronal cultures.

Abstract Source:

J Biomed Sci. 2012 Aug 29 ;19(1):80. Epub 2012 Aug 29. PMID: 22931352

Abstract Author(s):

Shih-Hung Yang, Chih-Chen Liao, Ying Chen, Jhih-Pu Syu, Chung-Jiuan Jeng, Seu-Mei Wang

Abstract:

ABSTRACT: BACKGROUND: Daidzein, a phytoestrogen found in isoflavone, is known to exert neurotrophic and neuroprotective effects on the nervous system. Using primary rat dorsal root ganglion (DRG) neuronal cultures, we have examined the potential neurite outgrowth effect of daidzein. METHODS: Dissociated dorsal root ganglia (DRG) cultures were used to study the signaling mechanism of daidzein-induced neuritogenesis by immunocytochemistry and Western blotting. RESULTS: In response to daidzein treatment, DRG neurons showed a significant increase in total neurite length and in tip number per neuron. The neuritogenic effect of daidzein was significantly hampered by specific blockers for Src, protein kinase C delta (PKCdelta) and mitogen-activated protein kinase/extracellular signal-regulated kinase kinases (MEK/ERK), but not by those for estrogen receptor (ER). Moreover, daidzein induced phosphorylation of Src, PKCdelta and ERK. The activation of PKCdelta by daidzein was attenuated in the presence of a Src kinase inhibitor, and that of ERK by daidzein was diminished in the presence of either a Src or PKCdelta inhibitor. CONCLUSION: Daidzein may stimulate neurite outgrowth of DRG neurons depending on Src kinase, PKCdelta and ERK signaling pathway.

Study Type : In Vitro Study
Additional Links
Pharmacological Actions : Neuritogenic : CK(133) : AC(59)

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Sayer Ji
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