Insights into the Cardiotoxic Effects of Alkaloids: Pilot Study
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Jervine, protoveratrine A (proA), and protoveratrine B (proB) are alkaloids that are presented in some remedies obtained from , such as . This paper reports on a single-center pilot cardiotoxic mechanism study of jervine, proA, and proB in case series. The molecular aspects were studied via molecular dynamic simulation, molecular docking with cardiac sodium channel Na1.5, and machine learning-based structure-activity relationship modeling. HPLC-MS/MS method in combination with clinical events were used to analyze alkaloid cardiotoxicity in patients. Jervine demonstrates the highest docking score (-10.8 kcal/mol), logP value (4.188), and p value (9.64) compared with proA and proB. Also, this compound is characterized by the lowest calculated IC. In general, all three analyzed alkaloids show the affinity to Na1.5 that highly likely results in cardiotoxic action. The clinical data of seven cases of intoxication by confirms the results of molecular modeling. Patients exhibited nausea, muscle weakness, bradycardia, and arterial hypotension. The association between alkaloid concentrations in blood and urine and severity of patient condition is described. These experiments, while primary, confirmed that jervine, proA, and proB contribute to cardiotoxicity by Na1.5 inhibition.
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