alexa Cyclooxygenase-3 gene expression in Alzheimer hippocampus and in stressed human neural cells.


Journal of Alzheimers Disease & Parkinsonism

Author(s): Cui JG, Kuroda H, Chandrasekharan NV, Pelaez RP, Simmons DL,

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Abstract The cyclooxygenase (COX) superfamily of prostaglandin synthase genes encode a constitutively expressed COX-1, an inducible, highly regulated COX-2, and a COX-3 isoform whose RNA is derived through the retention of a highly structured, G + C-rich intron 1 of the COX-1 gene. As generators of oxygen radicals, lipid mediators, and the pharmacological targets of nonsteroidal anti-inflammatory drugs (NSAIDs), COX enzymes potentiate inflammatory neuropathology in Alzheimer's disease (AD) brain. Because COX-2 is elevated in AD and COX-3 is enriched in the mammalian CNS, these studies were undertaken to examine the expression of COX-3 in AD and in [IL-1beta + Abeta42]-triggered human neural (HN) cells in primary culture. The results indicate that while COX-2 remains a major player in propagating inflammmation in AD and in stressed HN cells, COX-3 may play ancillary roles in membrane-based COX signaling or when basal levels of COX-1 or COX-2 expression persist.
This article was published in Neurochem Res and referenced in Journal of Alzheimers Disease & Parkinsonism

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