TY - JOUR
T1 - Neuroprotective effect of prenyloxycoumarins from edible vegetables
AU - Epifano, Francesco
AU - Molinaro, Gemma
AU - Genovese, Salvatore
AU - Ngomba, Richard Teke
AU - Nicoletti, Ferdinando
AU - Curini, Massimo
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2008/10/3
Y1 - 2008/10/3
N2 - The present study is designed to investigate the effect of some natural prenyloxyphenylpropanoids as neuroprotective agents against NMDA-induced toxicity in mixed cortical cell cultures containing both neurons and astrocytes. Excitotoxicity was induced by exposure of cultures to NMDA (100 μM) at room temperature in a HEPES-buffered salt solution followed by incubation at 37 °C for the following 24 h in MEM-Eagle's supplemented with 15.8 mM NaHCO3 and 25 mM glucose. Tested compounds were mixed with NMDA. Neuronal injury was measured in all experiments by examination of cultures with phase-contrast microscopy at 20×, 18-20 h after the insult while neuronal damage was quantitatively assessed by counting dead neurons stained with trypan blue and by measuring lactate dehydrogenase (LDH) released in the medium. Results showed that only natural prenyloxyphenylpropanoids containing a coumarin nucleus, namely 7-isopentenyloxycoumarin and auraptene, both found in nature from plants belonging to the genus Citrus and other of the family of Rutaceae, including edible ones, exerted a good dose-dependent manner protective effect against NMDA-induced neurotoxicity in particular at concentrations ranging from 1 to 10 μM.
AB - The present study is designed to investigate the effect of some natural prenyloxyphenylpropanoids as neuroprotective agents against NMDA-induced toxicity in mixed cortical cell cultures containing both neurons and astrocytes. Excitotoxicity was induced by exposure of cultures to NMDA (100 μM) at room temperature in a HEPES-buffered salt solution followed by incubation at 37 °C for the following 24 h in MEM-Eagle's supplemented with 15.8 mM NaHCO3 and 25 mM glucose. Tested compounds were mixed with NMDA. Neuronal injury was measured in all experiments by examination of cultures with phase-contrast microscopy at 20×, 18-20 h after the insult while neuronal damage was quantitatively assessed by counting dead neurons stained with trypan blue and by measuring lactate dehydrogenase (LDH) released in the medium. Results showed that only natural prenyloxyphenylpropanoids containing a coumarin nucleus, namely 7-isopentenyloxycoumarin and auraptene, both found in nature from plants belonging to the genus Citrus and other of the family of Rutaceae, including edible ones, exerted a good dose-dependent manner protective effect against NMDA-induced neurotoxicity in particular at concentrations ranging from 1 to 10 μM.
KW - Citrus spp.
KW - Mixed cortical cultures
KW - Neuroprotective activity
KW - Prenyloxycoumarins
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U2 - 10.1016/j.neulet.2008.07.062
DO - 10.1016/j.neulet.2008.07.062
M3 - Article
C2 - 18675882
AN - SCOPUS:49749108886
SN - 0304-3940
VL - 443
SP - 57
EP - 60
JO - Neuroscience letters
JF - Neuroscience letters
IS - 2
ER -