Decanethiol Functionalized Silver Nanoparticles Are New Powerful Leishmanicidals in Vitro
Overview
Microbiology
Authors
Affiliations
We evaluated, for the first time, the leishmanicidal potential of decanethiol functionalized silver nanoparticles (AgNps-SCH) on promastigotes and amastigotes of different strains and species of Leishmania: L. mexicana and L. major isolated from different patients suffering from localized cutaneous leishmaniasis (CL) and L. mexicana isolated from a patient suffering from diffuse cutaneous leishmaniasis (DCL). We recorded the kinetics of promastigote growth by daily parasite counting for 5 days, promastigote mobility, parasite reproduction by CFSE staining's protocol and promastigote killing using the propidium iodide assay. We also recorded IC's of promastigotes and amastigotes, therapeutic index, and cytotoxicity by co-culturing macrophages with AgNps-SCH or sodium stibogluconate (Sb) used as reference drug. We used Sb as a reference drug since it is used as the first line treatment for all different types of leishmaniasis. At concentrations 10,000 times lower than those used with Sb, AgNps-SCH had a remarkable leishmanicidal effect in all tested strains of parasites and there was no toxicity to J774A.1 macrophages since > 85% were viable at the concentrations used. Therapeutic index was about 20,000 fold greater than the corresponding one for Sb treated cells. AgNps-SCH inhibited > 80% promastigote proliferation in all tested parasites. These results demonstrate there is a high leishmanicidal potential of AgNps-SCH at concentrations of 0.04 µM. Although more studies are needed, including in vivo testing of AgNps-SCH against different types of leishmaniasis, they can be considered a potential new treatment alternative.
In vitro leishmanicidal activity of two cholesterol derivatives.
Isaac-Marquez A, Lezama-Davila C World J Microbiol Biotechnol. 2022; 38(4):66.
PMID: 35246768 DOI: 10.1007/s11274-022-03248-x.
Critical Antileishmanial in vitro Effects of Highly Examined Gold Nanoparticles.
Want M, Yadav P, Khan R, Chouhan G, Islamuddin M, Aloyouni S Int J Nanomedicine. 2021; 16:7285-7295.
PMID: 34737566 PMC: 8560327. DOI: 10.2147/IJN.S268548.
Nazareth Costa I, Ribeiro M, Franco P, da Silva R, de Araujo T, Milian I Front Microbiol. 2021; 11:623947.
PMID: 33552033 PMC: 7858645. DOI: 10.3389/fmicb.2020.623947.
Gomes-Alves A, Maia A, Cruz T, Castro H, Tomas A PLoS One. 2018; 13(8):e0201747.
PMID: 30071097 PMC: 6072083. DOI: 10.1371/journal.pone.0201747.