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dc.creatorPinto, Luciana Matos Alves-
dc.creatorAdeoye, Oluwatomide-
dc.creatorThomasi, Sérgio Scherrer-
dc.creatorFrancisco, Ana Paula-
dc.creatorCarvalheiro, Manuela Colla-
dc.creatorCabral-Marques, Helena-
dc.date.accessioned2021-09-02T17:29:10Z-
dc.date.available2021-09-02T17:29:10Z-
dc.date.issued2020-11-15-
dc.identifier.citationPINTO, L. M. A. et al. Preparation and characterization of a synthetic curcumin analog inclusion complex and preliminary evaluation of in vitro antileishmanial activity. International Journal of Pharmaceutics, Amsterdam, v. 589, 119764, 15 Nov. 2020. DOI: 10.1016/j.ijpharm.2020.119764.pt_BR
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0378517320307481#!pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/48027-
dc.description.abstractThe aim of this work was to prepare and characterize inclusion complexes between a synthetic curcumin analog (dibenzalacetone, DBA) and beta-cyclodextrin (β-CD); and to evaluate their in vitro antileishmanial activity. DBA was synthetized and characterized by spectroscopic methods and the inclusion complexes were obtained by kneading and lyophilization (LIO) in 1:1 and 1:2 stoichiometries. Phase solubility and dissolution assays showed a 40-fold increase in the aqueous solubility of DBA and its complete dissolution from LIO 1:1 formulation after 120 min respectively. Solid-state characterization by differential scanning calorimetry and near infrared spectroscopy demonstrated the inclusion of DBA in the β-CD cavity at the molar ratios tested, with LIO 1:1 formulation being the most stable. Using nuclear magnetic resonance experiments, the protons inside the cavity of β-CD were the most affected after the inclusion of DBA molecule. The cellular viability of THP-1 macrophage cells treated with plain DBA, β-CD and DBA/CD inclusion complexes showed that the plain DBA and DBA/CD at 1:2 stoichiometry presented toxicity, while β-CD alone and DBA/CD at 1:1 stoichiometry showed no toxicity up to 640 μg mL−1. The in vitro assay with free-living promastigotes demonstrated that plain DBA and β-CD had IC50 of < 10 and > 320 μg mL−1 respectively, while only inclusion complexes with 1:1 stoichiometry showed antiproliferative activity with IC50 = 51.3 μg mL−1. Using the amastigote intracellular forms, there was also a difference between the plain and β-CD complexed DBA with complexes of 1:1 and 1:2 stoichiometry presenting EC50 = 66.3 μg mL−1 and 58.9 μg mL−1 respectively. The study concluded that DBA/CD at 1:1 molar ratio has the potential to decrease the intrinsic toxicity of plain DBA towards Leishmania host cells, which may be a therapeutic advantage in the application of these compounds.pt_BR
dc.languageen_USpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceInternational Journal of Pharmaceuticspt_BR
dc.subjectBeta-cyclodextrinpt_BR
dc.subjectDibenzalacetonept_BR
dc.subjectCurcuminpt_BR
dc.subjectLeishmania majorpt_BR
dc.subjectLeishmaniasispt_BR
dc.subjectBeta-ciclodextrinapt_BR
dc.subjectDibenzalacetonapt_BR
dc.subjectCurcuminapt_BR
dc.subjectLeishmaniosept_BR
dc.titlePreparation and characterization of a synthetic curcumin analog inclusion complex and preliminary evaluation of in vitro antileishmanial activitypt_BR
dc.typeArtigopt_BR
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