title: Relationship between the potentiation of potassium-induced contracture of cardiac muscle by four cardenolides and their inhibitory effects on the sodium potassium activated adenosine triphosphatase of brain.
mesh_terms: D000251:Adenosine Triphosphatases / Q000037:antagonists & inhibitors*; D000818:Animals; D001001:Anura; D001921:Brain / Q000201:enzymology*; D002297:Cardanolides / Q000494:pharmacology; D003286:Contracture / Q000139:chemically induced*; D004357:Drug Synergism; D006331:Heart Diseases / Q000139:chemically induced*; D006352:Heart Ventricles / Q000503:physiopathology; D066298:In Vitro Techniques; D011188:Potassium / Q000494:pharmacology; D012964:Sodium / Q000494:pharmacology
chemical_list: D002297:Cardanolides; D012964:Sodium; D000251:Adenosine Triphosphatases; D011188:Potassium