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- W1964166946 abstract "A major therapeutic target for Parkinson's disease (PD) is providing increased glial-derived neurotrophic factor (GDNF) to dopaminergic neurons. We tested the hypothesis that innate immune activation increases astrocyte GDNF production and that this is regulated by specific eicosanoid receptors. Innate immune-activated primary murine astrocytes were assayed for GDNF expression and secretion. Controls were agent vehicle exposure and wild-type mice. Rank order for up to 10-fold selectively increased GDNF expression was activators of TLR3 > TLR2 or TLR4 > TLR9. TLR3 activator-stimulated GDNF expression was selectively JNK-dependent, followed cyclooxygenase (COX)-2, was coincident with membranous PGE(2) synthase, and was not significantly altered by a nonspecific COX- or a COX-2-selective inhibitor. Specific eicosanoid receptors had opposing effects on TLR3 activator-induced GDNF expression: ∼60% enhancement by blocking or ablating of PGE(2) receptor subtype 1 (EP1), ∼30% enhancement by activating PGF(2α) receptor or thromboxane receptor, or ∼15% enhancement by activating EP4. These results demonstrate functionally antagonistic eicosanoid receptor subtype regulation of innate immunity-induced astrocyte GDNF expression and suggest that selective inhibition of EP1 signaling might be a means to augment astrocyte GDNF secretion in the context of innate immune activation in diseased regions of brain in PD." @default.
- W1964166946 created "2016-06-24" @default.
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- W1964166946 date "2012-04-12" @default.
- W1964166946 modified "2023-10-17" @default.
- W1964166946 title "Eicosanoid receptor subtype‐mediated opposing regulation of TLR‐stimulated expression of astrocyte glial‐derived neurotrophic factor" @default.
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- W1964166946 doi "https://doi.org/10.1096/fj.11-200279" @default.
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