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- W1554585757 abstract "Previous in vivo and in vitro analyses have shown that both necrosis and apoptosis are involved in neuronal cell death induced by energy impairment caused by mitochondrial dysfunction. However, little is known about the key factors that determine whether the cells undergo necrosis or apoptosis. In the present study, we analyzed neuronal cell death induced by 3-nitropropionic acid (3-NP), an irreversible inhibitor of mitochondrial complex II, in a primary culture system of rat cortical neurons. The neurons were maintained for a week in coculture with astroglial cells, and then they were treated with 3-NP in the presence or absence of astroglial cells. As judged from morphological (Hoechst 33258 staining) and biochemical (DNA fragmentation and caspase activation) analyses, the cortical neurons appeared to die through an apoptotic process after 3-NP treatment in the presence of astroglial cells. However, caspase inhibitors did not suppress the 3-NP-induced cell death, suggesting the involvement of a caspase-independent pathway of 3-NP-induced neuronal cell death in the presence of astroglial cells. On the other hand, 3-NP induced necrotic cell death within 1 day in the absence of astroglial cells, following a rapid decrease in intracellular ATP level. These changes were attenuated by the presence of astroglial cells or the addition of astroglial conditioned medium. These results suggest that astroglial trophic support influences the alteration of the intracellular energy state in 3-NP-treated neurons and consequently determines the type of neuronal cell death, apoptosis or necrosis." @default.
- W1554585757 created "2016-06-24" @default.
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- W1554585757 date "2002-01-04" @default.
- W1554585757 modified "2023-09-27" @default.
- W1554585757 title "Astroglial Trophic Support and Neuronal Cell Death" @default.
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- W1554585757 doi "https://doi.org/10.1046/j.1471-4159.2000.0750925.x" @default.
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