Apigenin acts as a monoamine transporter activator, one of the few chemicals demonstrated to possess this property.[7] Apigenin is a ligand for central benzodiazepine receptors that competitively inhibited the binding of flunitrazepam with a Ki of 4 μM, exerting anxiolytic and slight sedative effects.[8] Apigenin shows second-order positive modulatory activity at GABAA receptors.[9][10] It has also effects on adenosine receptors[11] and blocks NMDA receptors (IC50 = 10 μM).[10] In addition, like various other flavonoids, apigenin has been found to possess nanomolar affinity for the opioid receptors (Ke = 410 nM, 970 nM, and 410 nM for the μ-, δ-, and κ-opioid receptors, respectively), acting as a non-selective antagonist of all three opioid receptors.[12]
In vitro studies have shown that apigenin may be toxic to red blood cells.
Apigenin acts as a monoamine transporter activator, one of the few chemicals demonstrated to possess this property.[7] Apigenin is a ligand for central benzodiazepine receptors that competitively inhibited the binding of flunitrazepam with a Ki of 4 μM, exerting anxiolytic and slight sedative effects.[8] Apigenin shows second-order positive modulatory activity at GABAA receptors.[9][10] It has also effects on adenosine receptors[11] and blocks NMDA receptors (IC50 = 10 μM).[10] In addition, like various other flavonoids, apigenin has been found to possess nanomolar affinity for the opioid receptors (Ke = 410 nM, 970 nM, and 410 nM for the μ-, δ-, and κ-opioid receptors, respectively), acting as a non-selective antagonist of all three opioid receptors.[12]In vitro studies have shown that apigenin may be toxic to red blood cells.
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