{Reference Type}: Journal Article {Title}: Protein Kinase A Inhibitor Attenuates the Antinociceptive Effect of NMDA-Receptor Channel Antagonists in the Capsaicin Test in Mice. {Author}: Ivanova EA;Vasilchuk AG;Voronina TA; {Journal}: Bull Exp Biol Med {Volume}: 177 {Issue}: 2 {Year}: 2024 Jun 2 {Factor}: 0.737 {DOI}: 10.1007/s10517-024-06162-4 {Abstract}: Acute nociceptive pain in mice caused by subcutaneous (intraplantar) injection of TRPV1 ion channel agonist capsaicin (1.6 μg/mouse) and the effects of protein kinase A inhibitor H-89 (0.05 mg/mouse, intraplantar injection) and NMDA receptor channel antagonists MK-801 (7.5 and 15 μg/mouse, topical application) and hemantane (0.5 mg/mouse, topical application) on the pain were assessed. MK-801 and hemantane were found to reduce the duration of the pain response. H-89 did not significantly affect the pain in animals, but preliminary administration of this drug abolished the antinociceptive effect of MK-801 (7.5 μg/mouse) and weakens the effect of hemantane (0.5 mg/mouse).