Meclizine has the ability to increase glycolysis and decrease cellular ATP levels in media that has glucose and galactose. It guards the kidney against ischemia-reperfusion injury. Meclizine is considered as an anti-nausea and anti-dizziness drug, was identified in a ?nutrient-sensitized? chemical screen. In human, it acts as an agonist of pregnane X receptor (PXR). It enhances the expression of CYP3A4 (cytochrome P450 3A4) mRNA and reduces CYP3A-catalyzed testosterone 6?-hydroxylation in primary cultures of human hepatocytes.
Meclizine is a potent histamine H1 receptor antagonist that is widely used as antiemetic. Recently, meclizine was identified as an inhibitor of hepstin. Also, meclizine is a potent inhibitor of mitochondrial respiration through inhibition of cytosolic CTP:phosphoethanolamine cytidylyltransferase (Pcyt2).
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