Chlorogenic acid, a polyphenol in coffee, protects neurons against glutamate neurotoxicity.
Life Sci
; 139: 69-74, 2015 Oct 15.
Article
em En
| MEDLINE
| ID: mdl-26285175
ABSTRACT
AIMS:
The present study has been designed to explore the molecular mechanism of chlorogenic acid (CGA) in the protective effect against glutamate-induced neuronal cell death. MAINMETHODS:
Cortical neurons in primary culture were exposed to 300 µM l-glutamic acid or vehicle, with or without 10 µM CGA or 10 µM MK-801. After 16 h, primary cultures were stained with propidium iodide (PI)/Hoechst or calcein. Double-staining with PI and Hoechst was performed to confirm whether cell death induced by glutamate was apoptotic. In addition, intracellular concentrations of Ca(2+) were observed using Ca(2+) indicator fura-2. KEYFINDINGS:
We investigated the protective effects of CGA on glutamate-induced neuronal cell death using primary cultures of mouse cerebral cortex because the release of glutamate during brain ischemia triggers death of neurons. Glutamate-induced neuronal cell death was inhibited by treatment with CGA. In addition, CGA prevented the increase in intracellular concentrations of Ca(2+) caused by the addition of glutamate to cultured neurons. On the other hand, there was little effect of CGA on cell death induced by nitric oxide, which is downstream of the ischemic neuronal cell death. Our results suggested that the polyphenol CGA in coffee protects neurons from glutamate neurotoxicity by regulating Ca(2+) entry into neurons.SIGNIFICANCE:
CGA in coffee may have clinical benefits for neurodegenerative diseases such as ischemic stroke.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ácido Clorogênico
/
Café
/
Fármacos Neuroprotetores
/
Ácido Glutâmico
/
Neurônios
Limite:
Animals
Idioma:
En
Revista:
Life Sci
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Japão