toxic substance monocrotaline 2019-08-01T17:00:38Z CHEBI:6980 CID:9415 MCT MESH:D016686 Monocrotaline is a pyrrolizidine alkaloid and a toxic plant constituent that poisons livestock and humans through the ingestion of contaminated grains and other foods. The alkaloid causes pulmonary artery hypertension, right ventricular hypertrophy, and pathological changes in the pulmonary vasculature. Significant attenuation of the cardiopulmonary changes are noted after oral magnesium treatment. XCO:0000642 crotaline experimental_condition_ontology sjwang