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J Neuroimmunol. 2004 Mar;148(1-2):32-40.

Intraparenchymal administration of interleukin-1beta induces cyclooxygenase-2-mediated expression of membrane- and cytosolic-associated prostaglandin E synthases in mouse brain.

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  • 1Department of Neurobiology and Anatomy, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Box 603, Rochester, NY 14642, USA.


Interleukin (IL)-1beta is a proinflammatory cytokine expressed in neural tissue following injury and in neurodegenerative states. To understand the consequences of its presence in brain, we carried out intraparenchymal IL-1beta injections and found significant increases in prostaglandin (PG)E2, a critical factor in inflammatory and physiological processes. Elevated mRNA and protein expression of the PGE2-synthetic-related enzymes cyclooxygenase (COX)-2 and membrane-associated PGE synthase (PGES) accompanied local PGE2 production. In addition, IL-1beta stimulated protein expression of cytosolic PGES. Finally, we showed attenuation of these IL-1beta-inductions by COX-2 inhibition, suggesting in vivo regulation of both PGE synthase isoforms in the brain.

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