RT info:eu-repo/semantics/article T1 In vitro activity of 1H-phenalen-1-one derivatives against Leishmania spp. and evidence of programmed cell death. A1 López Arencibia, Atteneri A1 Reyes‑Batlle, María A1 Freijo, Mónica B. A1 Sifaou, Ines A1 Bethencourt‑Estrella, Carlos J. A1 Rizo‑Liendo, Aitor A1 Chiboub, Olfa A1 McNaughton‑Smith, Grant A1 Lorenzo‑Morales, Jacob A1 Abad-Grillo, Teresa A1 Piñero, José E. K1 Leishmania donovani K1 Leishmania amazonensis K1 Phenalenones K1 Chemotherapy K1 Apoptosis-like AB Background: The in vitro activity against Leishmania spp. of a novel group of compounds, phenalenone derivatives,is described in this study. Previous studies have shown that some phenalenones present leishmanicidal activity, andinduce a decrease in the mitochondrial membrane potential in L. amazonensis parasites, so in order to elucidate theevidence of programmed cell death occurring inside the promastigote stage, diferent assays were performed in twodiferent species of Leishmania.Methods: We focused on the determination of the programmed cell death evidence by detecting the characteristicfeatures of the apoptosis-like process, such as phosphatidylserine exposure, mitochondrial membrane potential, andchromatin condensation among others.Results: The results showed that four molecules activated the apoptosis-like process in the parasite. All the signalsobserved were indicative of the death process that the parasites were undergoing.Conclusions: The present results highlight the potential use of phenalenone derivatives against Leishmania speciesand further studies should be undertaken to establish them as novel leishmanicidal therapeutic agents. YR 2019 FD 2019 LK http://riull.ull.es/xmlui/handle/915/35835 UL http://riull.ull.es/xmlui/handle/915/35835 LA en DS Repositorio institucional de la Universidad de La Laguna RD 17-may-2024