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Freitas, Camila S.; Pereira, Isabela A.G.; Lage, Daniela P.; Vale, Danniele L.; Pimenta, Breno L.; Soares, Nícia P.; Santiago, Samira S.; Martins, Vívian T.; Câmara, Raquel S.B.; Jesus, Marcelo M.; Tavares, Grasiele S.V.; Ramos, Fernanda F.; Ludolf, Fernanda; Magalhães, Lícia N.D.; Oliveira, Fabrício M.; Duarte, Mariana C.; Chávez-Fumagalli, Miguel A.; Costa, Adilson V.; Roatt, Bruno M.; Teixeira, Róbson R.; Coelho, Eduardo A.F.
Cytokine (Philadelphia, Pa.), 20/May , Letnik: 177Journal Article
Display omitted •Two synthetic derivatives from vanillin were used against L. infantum infection.•They were incorporated into Poloxamer 407-containing polymeric micelles.•The compositions were effective to treat infected BALB/c mice.•Treated animals showed low parasitism, Th1-type immunity and any toxicity.•Higher therapeutic efficacy was found as compared to amphotericin B and Ambisome®. Treatment against visceral leishmaniasis (VL) presents problems, mainly related to drug toxicity, high cost and/or by emergence of resistant strains. In the present study, two vanillin synthetic derivatives, 3 s 4-(2-hydroxy-3-(4-octyl-1H-1,2,3-triazol-1-yl)propoxy)-3-methoxybenzaldehyde and 3 t 4-(3-(4-decyl-1H-1,2,3-triazol-1-yl)-2-hydroxypropoxy)-3-methoxybenzaldehyde, were evaluated as therapeutic candidates in a murine model against Leishmania infantum infection. Molecules were used pure (3 s and 3 t) or incorporated into Poloxamer 407-based micelles (3 s/M and 3 t/M) in the infected animals, which also received amphotericin B (AmpB) or Ambisome® as control. Results showed that 3 s/M and 3 t/M compositions induced a Th1-type immune response in treated animals, with higher levels of IFN-γ, IL-2, TNF-α, IL-12, nitrite, and IgG2a antibodies. Animals presented also low toxicity and significant reductions in the parasite load in their spleens, livers, bone marrows and draining lymph nodes, as compared as control groups mice, with the evaluations performed one and 30 days after the application of the therapeutics. In conclusion, preliminary data suggest that 3 s/M and 3 t/M could be considered for future studies as therapeutic agents against VL.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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