Akihiro Matsuda, Kohjiro Nagao, Michinori Matsuo, Noriyuki Kioka and Kazumitsu Ueda 24(S)-hydroxycholesterol is actively eliminated from neuronal cells by ABCA1 Journal of Neurochemistry 126
ABCA1 actively eliminates 24-OHC in the presence of HDL and protects neuronal cells from apoptosis. High cholesterol turnover is essential for neural functions and 24(S)-hydroxycholesterol (24-OHC) is the major cholesterol metabolite in the brain. However, 24-OHC is toxic to neuronal cells. We propose that two ABC proteins, ABCA1 and ABCG1, are involved in active elimination of 24-OHC in the presence of HDL as a lipid acceptor and protect neuronal cells from apoptosis.
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