Antibacterial Activity of Kalanchoe mortagei and K. fedtschenkoi Against ESKAPE Pathogens

Frontiers in Pharmacology
Nicholas RichwagenCassandra L Quave

Abstract

Plants in the genus Kalanchoe (Family: Crassulaceae) are used in traditional medicine throughout the tropics for treating a variety of conditions. Two species, Kalanchoe mortagei and K. fedtschenkoi, have established ethnobotanical usage but have been neglected in previous research concerning their potential bioactivity. Here, we provide a thorough review of the reported antimicrobial activities of Kalanchoe genus and evaluate the in vitro antibacterial effects of two previously unexplored species against a panel of multidrug-resistant bacteria, the ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter cloacae). Plant specimens were collected and voucher specimens deposited in the Emory University Herbarium. Dried plant material was ground into a powder and extracted as ethanolic macerations or as aqueous decoctions. Extracts were tested against the ESKAPE pathogens for growth inhibitory activity. Cytotoxicity to human cells was assessed via a lactate dehydrogenase assay of treated human keratinocytes (HaCaTs). K. fedtschenkoi extracts demonstrated growth inhibitory effects against two Gram-negative species, A. baumannii (strain CD...Continue Reading

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Citations

Apr 28, 2020·Journal of Clinical Pharmacy and Therapeutics·Taciéli Fagundes da RosaRosmari Hörner
Oct 28, 2019·Bioorganic & Medicinal Chemistry·Dieter MeierRainer Kalscheuer
Nov 15, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Asad UllahMariusz Jaremko
Mar 16, 2021·Heliyon·Priya BhatiaNidhi S Chandra

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