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de Almeida IDAA, Honório TDS, do Carmo FA, de Freitas ZMF, Simon A, Rangel Rodrigues C, Pereira de Sousa V, Cabral LM, de Abreu LCL. Development of SEDDS formulation containing caffeine for dermal delivery. Int J Cosmet Sci 2023; 45:255-265. [PMID: 36752036 DOI: 10.1111/ics.12841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
OBJECTIVE The objective of this work was to develop a self-emulsifying drug delivery system (SEDDS) containing caffeine for the treatment of cellulite. METHODS SEDDS were prepared using the solution method. 0.5% (w/v) caffeine was added to the previously selected excipients. The system was characterized by droplet size, zeta potential, emulsification time and long-term stability. In vitro release and skin permeation were investigated using Franz-type diffusion cells. The cytotoxicity was evaluated on normal human keratinocytes. RESULTS Caffeine SEDDS were thermodynamically stable, with a zeta potential less than - 22 mV and droplet size around 30 nm, and were long-term stable. The permeation study showed that the formulation promoted caffeine accumulation in the skin layers, suggesting an increase in local circulation. Cytotoxicity studies on HaCaT cells were not conclusive as the surfactant used indicated false-positive results due to its high molar mass. CONCLUSION It was possible to obtain a stable SEDDS that could cause an increase in blood flow in the applied area, resulting in cellulite reduction.
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Affiliation(s)
| | - Thiago da Silva Honório
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flavia Almada do Carmo
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Zaida Maria Faria de Freitas
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alice Simon
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Rangel Rodrigues
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Department of Pharmaceutics and Medicines, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Letícia Coli Louvisse de Abreu
- Laboratory of Instrumental Analysis, Duque de Caxias Campus, Federal Institute of Rio de Janeiro, Rio de Janeiro, Brazil
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da Silva Honório T, Simon A, Machado RMC, Rodrigues CR, do Carmo FA, Cabral LM, de Sousa VP. Use of In silico Methodologies to Predict the Bioavailability of Oral Suspensions: A Regulatory Approach. Curr Pharm Des 2023; 29:3040-3049. [PMID: 37957861 DOI: 10.2174/0113816128257028231030113156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Oral suspensions are heterogeneous disperse systems, and the particle size distribution, crystalline form of the dispersed solid, and composition of the formulation can be listed as parameters that control the drug dissolution rate and its bioavailability. OBJECTIVE The aim of this work was to develop a discriminative dissolution test, which, in association with in silico methodologies, can make it possible to safely anticipate bioavailability problems. METHODS Nimesulide and ibuprofen (BCS class II) and cephalexin (BCS class I) oral suspensions were studied. Previously, solid-state structure and particle size in active pharmaceutical ingredients were characterized and the impact of differences on solubility was evaluated for the choice of discriminative medium. Afterwards, particle size distribution (0.1 to 360 μm), dissolution profile, and in vitro permeability in Caco-2 cell of commercial suspensions, were determined. These parameters were used as input for the establishment of the in vitro-in vivo correlation (IVIVC) for the suspensions using the GastroPlus™ with Wagner-Nelson and Loo- Riegelmann deconvolution approach. RESULTS The predicted/observed pharmacokinetic model showed good correlation coefficients (r) of 0.960, 0.950, and 0.901, respectively. The IVIVC was established for one nimesulide and two ibuprofen suspensions with r between 0.956 and 0.932, and the percent prediction error (%PE) did not exceed 15%. CONCLUSION In this work, we have performed a complete study combining in vitro/in silico approaches with the aim of anticipating the safety and efficacy of oral pharmaceutical suspensions in order to provide a regulatory tool for this category of products in a faster and more economical way.
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Affiliation(s)
- Thiago da Silva Honório
- Laboratory of Molecular Modeling & QSAR, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Cell Culture (LabCel), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alice Simon
- Laboratory of Cell Culture (LabCel), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Pharmaceutical Industrial Technology (LabTIF), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raiane Monteiro Clacino Machado
- Laboratory of Pharmaceutical Industrial Technology (LabTIF), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Rangel Rodrigues
- Laboratory of Molecular Modeling & QSAR, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávia Almada do Carmo
- Laboratory of Pharmaceutical Industrial Technology (LabTIF), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Laboratory of Cell Culture (LabCel), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Pharmaceutical Industrial Technology (LabTIF), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Laboratory of Pharmaceutical Industrial Technology (LabTIF), Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Suzuki ÉY, Simon A, Souza Domingos TF, de Azevedo Abrahim Vieira B, de Souza AMT, Rodrigues CR, de Sousa VP, do Carmo FA, Cabral LM. Alternative Methods for Pulmonary-Administered Drugs Metabolism: A Breath of Change. Mini Rev Med Chem 2023; 23:170-186. [PMID: 35726420 DOI: 10.2174/1389557522666220620125623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/11/2022] [Accepted: 02/18/2022] [Indexed: 11/22/2022]
Abstract
Prediction of pulmonary metabolites following inhalation of a locally acting pulmonary drug is essential to the successful development of novel inhaled medicines. The lungs present metabolic enzymes, therefore they influence drug disposal and toxicity. The present review provides an overview of alternative methods to evaluate the pulmonary metabolism for the safety and efficacy of pulmonary delivery systems. In vitro approaches for investigating pulmonary drug metabolism were described, including subcellular fractions, cell culture models and lung slices as the main available in vitro methods. In addition, in silico studies are promising alternatives that use specific software to predict pulmonary drug metabolism, determine whether a molecule will react with a metabolic enzyme, the site of metabolism (SoM) and the result of this interaction. They can be used in an integrated approach to delineate the major cytochrome P450 (CYP) isoforms to rationalize the use of in vivo methods. A case study about a combination of experimental and computational approaches was done using fluticasone propionate as an example. The results of three tested software, RSWebPredictor, SMARTCyp and XenoSite, demonstrated greater probability of the fluticasone propionate being metabolized by CYPs 3A4 at the S1 atom of 5-S-fluoromethyl carbothioate group. As the in vitro studies were not able to directly detect pulmonary metabolites, those alternatives in silico methods may reduce animal testing efforts, following the principle of 3Rs (Replacement, Reduction and Refinement), and contribute to the evaluation of pharmacological efficacy and safety profiles of new drugs in development.
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Affiliation(s)
- Érika Yoko Suzuki
- Laboratory of Industrial Technology, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alice Simon
- Laboratory of Industrial Technology, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Carlos Rangel Rodrigues
- Laboratory of Molecular Modeling & QSAR, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Laboratory of Industrial Technology, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávia Almada do Carmo
- Laboratory of Industrial Technology, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Laboratory of Industrial Technology, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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de Souza Furtado P, Ribeiro da Silva Melo J, Wetler Meireles P, da Silva Honorio T, Campos de Oliveira Miguel N, Simon A, Cunha Sathler P, Coli Louvisse de Abreu L, Almada do Carmo F, Rodrigues CR, Pereira de Sousa V, Cabral LM. Benign prostatic hyperplasia therapy through liquisolid technology composed of polymer-layered nanocomposites based on silicate that contain babassu oil and copaiba oil-resin. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Meireles PW, de Souza DPB, Rezende MG, Borsodi MPG, de Oliveira DE, da Silva LCRP, de Souza AMT, Viana GM, Rodrigues CR, do Carmo FA, de Sousa VP, Rossi-Bergmann B, Cabral LM. Nanoparticles Loaded with a New Thiourea Derivative: Development and In vitro Evaluation Against Leishmania amazonensis. Curr Drug Deliv 2021; 17:694-702. [PMID: 32621717 DOI: 10.2174/1567201817666200704132348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/27/2019] [Accepted: 02/13/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Leishmaniasis is a neglected tropical disease caused by protozoa of the genus Leishmania. Current treatments are restricted to a small number of drugs that display both severe side effects and a potential for parasites to develop resistance. A new N-(3,4-methylenedioxyphenyl)-N'- (2-phenethyl) thiourea compound (thiourea 1) has shown promising in vitro activity against Leishmania amazonensis with an IC50 of 54.14 μM for promastigotes and an IC50 of 70 μM for amastigotes. OBJECTIVE To develop a formulation of thiourea 1 as an oral treatment for leishmaniasis, it was incorporated into Nanoparticles (NPs), a proven approach to provide long-acting drug delivery systems. METHODS Poly (D,L-Lactic-co-Glycolic Acid) (PLGA) polymeric NPs containing thiourea 1 were obtained through a nanoprecipitation methodology associated with solvent evaporation. The NPs containing thiourea 1 were characterized for Encapsulation Efficiency (EE%), reaction yield (% w/w), surface charge, particle size and morphology by Transmission Electron Microscopy (TEM). RESULTS NPs with thiourea 1 showed an improved in vitro leishmanicidal activity with a reduction in its cytotoxicity against macrophages (CC50>100 μg/mL) while preserving its IC50 against intracellular amastigotes (1.46 ± 0.09 μg/mL). This represents a parasite Selectivity Index (SI) of 68.49, which is a marked advancement from the reference drug pentamidine (SI = 30.14). CONCLUSION The results suggest that the incorporation into NPs potentiated the therapeutic effect of thiourea 1, most likely by improving the selective delivery of the drug to the phagocytic cells that are targeted for infection by L. amazonensis. This work reinforces the importance of nanotechnology in the acquisition of new therapeutic alternatives for oral treatments.
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Affiliation(s)
- Paloma Wetler Meireles
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Dandara Paiva Barroso de Souza
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marianne Grilo Rezende
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | | | - Gil Mendes Viana
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Rangel Rodrigues
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flavia Almada do Carmo
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bartira Rossi-Bergmann
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Araújo CDCB, Simon A, Honório TDS, da Silva SVC, Valle IMM, da Silva LCRP, Rodrigues CR, de Sousa VP, Cabral LM, Sathler PC, do Carmo FA. Development of rivaroxaban microemulsion-based hydrogel for transdermal treatment and prevention of venous thromboembolism. Colloids Surf B Biointerfaces 2021; 206:111978. [PMID: 34293580 DOI: 10.1016/j.colsurfb.2021.111978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/06/2021] [Accepted: 07/14/2021] [Indexed: 12/17/2022]
Abstract
We have developed a microemulsion (ME)-based hydrogel, containing propylene glycol, Azone®, Labrasol®, isobutanol and water (20:3:18:3:56), for the transdermal delivery of rivaroxaban (RVX). Formulation ME-1:RVX, which was loaded with 0.3 mg/g of RVX, presented as a clear, homogenous fluid with a droplet size of 82.01 ± 6.32 nm and a PdI of 0.207 ± 0.01. To provide gelation properties, 20 % (w/w) of Pluronic® F-127 was added to ME-1:RVX to generate formulation PME-1a. An added benefit was an increased capacity for RVX to 0.4 mg/g (formulation PME-1b). PME-1b displayed spherical droplets with a nanoscale diameter as observed by Transmission Electron Microscopy. The release of RVX from PME-1b was 20.71 ± 0.76 μg/cm2 with a permeation through pig epidermis of 18.32 ± 8.87 μg/cm2 as measured in a Franz Cell for 24 h. PME-1b presented a pseudoplastic behavior, pH value compatible with the skin and good stability over 60 days at room and elevated temperatures. The prothrombin time was assessed for each concentration of RVX obtained in the permeation assay and each demonstrated a relevant anticoagulant activity. PME-1b also presented no cytotoxicity against HaCaT cells. Utilizing GastroPlus® software, an in silico analysis was performed to simulate the delivery of PME-1b through a transdermal system that suggested a minimum dose of RVX for the treatment and prevention of venous thromboembolism could be achieved with an 8 h administration regimen. These results suggest that PME-1b is a promising transdermal formulation for the effective delivery of RVX that could be a viable alternative for the treatment and prevention of venous thromboembolism.
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Affiliation(s)
- Cristina da Costa Bernardes Araújo
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Alice Simon
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Thiago da Silva Honório
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Silvia Valéria Cruz da Silva
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Isabella Mourão Machado Valle
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Luiz Cláudio Rodrigues Pereira da Silva
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Carlos Rangel Rodrigues
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Plínio Cunha Sathler
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil
| | - Flávia Almada do Carmo
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Cidade Universitária, Rio de Janeiro, 21.941-902, Brazil.
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Mendes TDC, Pinto EC, Cabral LM, de Sousa VP. Rotigotine: A Review of Analytical Methods for the Raw Material, Pharmaceutical Formulations, and Its Impurities. J AOAC Int 2021; 104:592-604. [PMID: 33276374 DOI: 10.1093/jaoacint/qsaa145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 10/13/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND Rotigotine is a dopaminergic agonist developed for the treatment of Parkinson's disease and restless leg syndrome. The pure levorotatory enantiomer is marketed in several countries as a transdermal patch. Reports of oxidation and instability in a previous formulation indicate the need to evaluate impurities in both the raw material and pharmaceutical dosage forms of rotigotine to ensure product quality. OBJECTIVE This review examines the main analytical methods for analyzing rotigotine in raw material and its transdermal patches with the aim of assisting the development of new pharmaceutical formulations and stability studies. METHODS Analytical methods based on high-performance liquid chromatography for rotigotine from pharmacopoeias and literature were evaluated. A comparison was made between the methods found in the literature and official rotigotine monographs described by the United States, European, and British Pharmacopoeias, including a discussion of their acceptance limits for impurities related to the drug. The different impurities from the synthesis processes and degradation studies of rotigotine were also evaluated, as well as the main articles that describe methods for assessing their chiral purity. RESULTS Qualified and unofficial official impurities found in forced degradation studies were verified. The methods presented show adequate specificity and selectivity in determining the drug in the presence of its impurities. CONCLUSIONS The approached methods are promising, but more detailed studies on the stability of rotigotine are still lacking, mainly in the pharmacokinetic and toxicological characterization of its impurities.
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Affiliation(s)
- Thamara de Carvalho Mendes
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eduardo Costa Pinto
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Fonseca ADM, Araújo CDCB, da Silva JH, Honório TDS, Nasciutti LE, Cabral LM, do Carmo FA, de Sousa VP. Development of transdermal based hydrogel formulations of vinorelbine with an evaluation of their in vitro profiles and activity against melanoma cells and in silico prediction of drug absorption. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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de Castro RR, do Carmo FA, Martins C, Simon A, de Sousa VP, Rodrigues CR, Cabral LM, Sarmento B. Clofazimine functionalized polymeric nanoparticles for brain delivery in the tuberculosis treatment. Int J Pharm 2021; 602:120655. [PMID: 33915184 DOI: 10.1016/j.ijpharm.2021.120655] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/31/2021] [Accepted: 04/23/2021] [Indexed: 02/06/2023]
Abstract
Central nervous system tuberculosis (CNS-TB) is the most severe form of the disease especially due to the inability of therapeutics to cross the blood-brain barrier (BBB). Clofazimine (CFZ) stands out for presenting high in vitro activity against multi-drug resistant strains of Mycobacterium tuberculosis, however, CFZ physicochemical and pharmacokinetics properties limit drug penetration into the CNS and, consequently, its clinical use. The aim of this work was to develop polymeric nanoparticles (NPs) of poly(lactic-co-glycolic acid) (PLGA) and polyethylene glycol (PEG) loaded with CFZ and functionalized with a transferrin receptor (TfR)-binding peptide, aiming brain drug delivery for CNS-TB treatment by the intravenous route. The poor water solubility and high lipophilicity of CFZ was overcome through its entrapment into PLGA-PEG NPs manufactured by both conventional and microfluidic techniques using the nanoprecipitation principle. In vitro studies in brain endothelial hCMEC/D3 cells demonstrated that CFZ incorporation into the NPs was advantageous to reduce drug cytotoxicity. The TfR-binding peptide-functionalized NPs showed superior cell interaction and higher CFZ permeability across hCMEC/D3 cell monolayers compared to the non-functionalized NP control, thus indicating the efficacy of the functionalization strategy on providing CFZ transport through the BBB in vitro. The functionalized NPs demonstrate suitability for CFZ biological administration, suggested with low plasma protein binding, off-target biodistribution and precise delivery of CFZ towards the brain parenchyma.
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Affiliation(s)
- Renata Ribeiro de Castro
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, 21941-902 Rio de Janeiro, Brazil; Laboratory of Molecular Pharmacology, Institute of Drug Technology (Farmanguinhos), Oswaldo Cruz Foundation, Rua Sizenando Nabuco 100, 21041-250 Rio de Janeiro, Brazil
| | - Flavia Almada do Carmo
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, 21941-902 Rio de Janeiro, Brazil
| | - Cláudia Martins
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Alice Simon
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, 21941-902 Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, 21941-902 Rio de Janeiro, Brazil
| | - Carlos Rangel Rodrigues
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, 21941-902 Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, 21941-902 Rio de Janeiro, Brazil
| | - Bruno Sarmento
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; CESPU - Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde and Instituto Universitário de Ciências da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal.
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da Silva Medeiros T, Pinto EC, Cabral LM, de Sousa VP. Tobramycin: A review of detectors used in analytical approaches for drug substance, its impurities and in pharmaceutical formulation. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105658] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rocha LP, Cabral LM, Pinto EC, de Sousa VP. Ezetimibe: A Review of Analytical Methods for the Drug Substance, Pharmaceutical Formulations and Biological Matrices. Crit Rev Anal Chem 2020; 52:1078-1093. [PMID: 33347374 DOI: 10.1080/10408347.2020.1857222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Ezetimibe (EZM) is a selective inhibitor of the sterol transporter Niemann-Pick C1-Like 1 in the small intestine used as an adjunctive therapy to lower cholesterol levels in cases of hyperlipidemia. The goal of this work was to summarize the main physical-chemical, pharmacological and pharmacokinetic characteristics of EZM, as well as to describe the main analytical methodologies for the quantification of the drug. Methods described in the United States Pharmacopeia for EZM raw material and tablets were also presented. The drug has a large number of process-related impurities and degradation products and needs strict quality control of its impurities. Specific chiral methods for the evaluation of its chiral impurities are also a need for EZM. The main advantages and disadvantages of the compiled analytical methods were presented, as well as the limits of detection and quantitation. The fastest and most efficient methods were highlighted. Most methods for analyzing EZM used C8 or C18 stationary phases in gradient mode with binary mobile phases containing acetonitrile and an acidic buffer solution with ultraviolet detection. For analysis of EZM in biological matrices, liquid chromatography-tandem mass spectrometry is generally employed using electron spray ionization in negative ionization mode using multiple reaction monitoring. Different methods in the literature evaluate a large number of impurities for EZM, however new stability-indicating high-performance liquid chromatography methods for the drug are still needed.
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Affiliation(s)
- Letícia Pereira Rocha
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eduardo Costa Pinto
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Simon A, Moreira MLA, Costa IFDJB, de Sousa VP, Rodrigues CR, da Rocha E Lima LMT, Sisnande T, do Carmo FA, Leal ICR, Dos Santos KRN, da Silva LCRP, Cabral LM. Vancomycin-loaded nanoparticles against vancomycin intermediate and methicillin resistant Staphylococcus aureus strains. Nanotechnology 2020; 31:375101. [PMID: 32470951 DOI: 10.1088/1361-6528/ab97d7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bacterial infections represent one of the leading causes of mortality in the world. Among causative pathogens, S. aureus is prominently known as the underlying cause of many multidrug resistant infections that are often treated with the first-line choice antibiotic vancomycin (VCM). Loading antibiotics into polymeric nanoparticles (Np) displays promise as an alternative method to deliver therapy due to the greater access and accumulation of the antibiotic at the site of the infection as well as reducing toxicity, irritation and degradation. The aim of this work was to prepare, characterize and evaluate VCM-loaded nanoparticles (VNp) for use against S. aureus strains. Moreover, conjugation of Nps with holo-transferrin (h-Tf) was investigated as an approach for improving targeted drug delivery. VNp were prepared by double emulsion solvent evaporation method using PLGA and PVA or DMAB as surfactants. The particles were characterized for size distribution, Zeta Potential, morphology by transmission electron microscopy, encapsulation yield and protein conjugation efficiency. Process yield and drug loading were also investigated along with an in vitro evaluation of VNp antimicrobial effects against S. aureus strains. Results showed that Np were spontaneously formed with a mean diameter lower than 300 nm in a narrow size distribution that presented a spherical shape. The bioconjugation with h-Tf did not appear to increase the antimicrobial effect of VNp. However, non-bioconjugated Np presented a minimal inhibitory concentration lower than free VCM against a MRSA (Methicillin-resistant S. aureus) strain, and slightly higher against a VISA (VCM intermediate S. aureus) strain. VNp without h-Tf showed potential to assist in the development of new therapies against S. aureus infections.
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Affiliation(s)
- Alice Simon
- Laboratório de Tecnologia Industrial Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro - UFRJ, CCS, Lss20, Ilha do Fundão, 21941-590, Rio de Janeiro, RJ, Brazil
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Coli Louvisse de Abreu L, Abrahim-Vieira BDA, Mendonça Teles de Souza A, Pinto EC, Gonçalves MDS, Simon A, Viana GM, Rodrigues CR, Pereira de Sousa V, Cabral LM. Forced degradation studies of norepinephrine and epinephrine from dental anesthetics: Development of stability-indicating HPLC method and in silico toxicity evaluation. Biomed Chromatogr 2020; 34:e4832. [PMID: 32190911 DOI: 10.1002/bmc.4832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 02/29/2020] [Accepted: 03/10/2020] [Indexed: 11/11/2022]
Abstract
Injectable solutions containing epinephrine (EPI) and norepinephrine (NE) are not stable, and their degradation is favored mainly by the oxidation of catechol moiety. As studies of these drugs under forced degradation conditions are scarce, herein, we report the identification of their degradation products (DP) in anesthetic formulations by the development of stability-indicating HPLC method. Finally, the risk assessment of the major degradation products was evaluated using in silico toxicity approach. HPLC method was developed to obtain a higher selectivity allowing adequate elution for both drugs and their DPs. The optimized conditions were developed using a C18 HPLC column, sodium 1-octanesulfonate, and methanol (80:20, v/v) as mobile phase, with a flow rate of 1.5 mL/min, UV detection at 199 nm. The analysis of standard solutions with these modifications resulted in greater retention time for EPI and NE, which allow the separation of these drugs from their respective DPs. Then, five DPs were identified and analyzed by in silico studies. Most of the DPs showed important alerts as hepatotoxicity and mutagenicity. To the best of our acknowledgment, this is the first report of a stability-indicating HPLC method that can be used with formulations containing catecholamines.
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Affiliation(s)
- Letícia Coli Louvisse de Abreu
- Laboratory of Instrumental Analysis, Duque de Caxias Campus, Federal Institute of Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Eduardo Costa Pinto
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariana da Silva Gonçalves
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alice Simon
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gil Mendes Viana
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Rangel Rodrigues
- Laboratory of Molecular Modeling & QSAR, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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da Silva JD, Gomes MV, Cabral LM, de Sousa VP. Evaluation of the in vitro release and permeation of Cordia verbenacea DC essential oil from topical dosage forms. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Mendes TDC, Simon A, Menezes JCV, Pinto EC, Cabral LM, de Sousa VP. Development of USP Apparatus 3 Dissolution Method with IVIVC for Extended Release Tablets of Metformin Hydrochloride and Development of a Generic Formulation. Chem Pharm Bull (Tokyo) 2019; 67:23-31. [DOI: 10.1248/cpb.c18-00579] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Alice Simon
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro
| | | | - Eduardo Costa Pinto
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro
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de Souza Anselmo C, Sardela VF, de Sousa VP, Pereira HMG. Zebrafish (Danio rerio): A valuable tool for predicting the metabolism of xenobiotics in humans? Comp Biochem Physiol C Toxicol Pharmacol 2018; 212:34-46. [PMID: 29969680 DOI: 10.1016/j.cbpc.2018.06.005] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 12/31/2022]
Abstract
Zebrafish has become a popular model organism in several lines of biological research sharing physiological, morphological and histological similarities with mammals. In fact, many human cytochrome P450 (CYP) enzymes have direct orthologs in zebrafish, suggesting that zebrafish xenobiotic metabolic profiles may be similar to those in mammals. The focus of the review is to analyse the studies that have evaluated the metabolite production in zebrafish over the years, either of the drugs themselves or xenobiotics in general (environmental pollutants, natural products, etc.), bringing a vision of how these works were performed and comparing, where possible, with human metabolism. Early studies that observed metabolic production by zebrafish focused on environmental toxicology, and in recent years the main focus has been on toxicity screening of pharmaceuticals and drug candidates. Nevertheless, there is still a lack of standardization of the model and the knowledge of the extent of similarity with human metabolism. Zebrafish screenings are performed at different life stages, typically being carried out in adult fish through in vivo assays, followed by early larval stages and embryos. Studies comparing metabolism at the different zebrafish life stages are also common. As with any non-human model, the zebrafish presents similarities and differences in relation to the profile of generated metabolites compared to that observed in humans. Although more studies are still needed to assess the degree to which zebrafish metabolism can be compared to human metabolism, the facts presented indicate that the zebrafish is an excellent potential model for assessing xenobiotic metabolism.
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Affiliation(s)
- Carina de Souza Anselmo
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD-LADETEC, Av Horácio Macedo, 1281, 21941-598, Polo de Química, bloco C, Cidade Universitária, Rio de Janeiro, RJ, Brazil; Federal University of Rio de Janeiro, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, LabCQ, Av Carlos Chagas Filho, 373, 21941-902, Bss36, Cidade Universitária, Rio de Janeiro, RJ, Brazil.
| | - Vinicius Figueiredo Sardela
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD-LADETEC, Av Horácio Macedo, 1281, 21941-598, Polo de Química, bloco C, Cidade Universitária, Rio de Janeiro, RJ, Brazil; Federal University of Rio de Janeiro, Institute of Chemistry, LPDI-LADETEC, Av Horácio Macedo, 1281, 21941-598, Polo de Química, bloco C, Cidade Universitária, Rio de Janeiro, RJ, Brazil
| | - Valeria Pereira de Sousa
- Federal University of Rio de Janeiro, Department of Drugs and Pharmaceutics, Faculty of Pharmacy, LabCQ, Av Carlos Chagas Filho, 373, 21941-902, Bss36, Cidade Universitária, Rio de Janeiro, RJ, Brazil
| | - Henrique Marcelo Gualberto Pereira
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD-LADETEC, Av Horácio Macedo, 1281, 21941-598, Polo de Química, bloco C, Cidade Universitária, Rio de Janeiro, RJ, Brazil
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de Abreu LCL, de Souza Furtado P, da Silva Honorio T, Hudson Hossy B, de Pádula M, Francielle Souza Domingos T, Almada do Carmo F, Campos de Oliveira Miguel N, Rangel Rodrigues C, de Sousa VP, Cunha Sathler P, Mendes Cabral L. A synergistic nanoformulation of babassu and copaiba oils as natural alternative for prevention of benign prostatic hyperplasia. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.07.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Suzuki ÉY, Amaro MI, de Almeida GS, Cabral LM, Healy AM, de Sousa VP. Development of a new formulation of roflumilast for pulmonary drug delivery to treat inflammatory lung conditions. Int J Pharm 2018; 550:89-99. [DOI: 10.1016/j.ijpharm.2018.08.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/16/2018] [Accepted: 08/17/2018] [Indexed: 11/25/2022]
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do Amaral LH, do Carmo FA, Amaro MI, de Sousa VP, da Silva LCRP, de Almeida GS, Rodrigues CR, Healy AM, Cabral LM. Development and Characterization of Dapsone Cocrystal Prepared by Scalable Production Methods. AAPS PharmSciTech 2018; 19:2687-2699. [PMID: 29968042 DOI: 10.1208/s12249-018-1101-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/05/2018] [Indexed: 12/20/2022] Open
Abstract
In this study, the formation of caffeine/dapsone (CAF/DAP) cocrystals by scalable production methods, such as liquid-assisted grinding (LAG) and spray drying, was investigated in the context of the potential use of processed cocrystal powder for pulmonary delivery. A CAF/DAP cocrystal (1:1 M ratio) was successfully prepared by slow evaporation from both acetone and ethyl acetate. Acetone, ethyl acetate, and ethanol were all successfully used to prepare cocrystals by LAG and spray drying. The powders obtained were characterized by X-ray diffractometry (XRD), differential scanning calorimetry (DSC), thermogravimetry (TGA), and Fourier transform infrared spectroscopy (FTIR). Laser diffraction analysis indicated a median particle size (D50) for spray-dried powders prepared from acetone, ethanol, and ethyl acetate of 5.4 ± 0.7, 5.2 ± 0.1, and 5.1 ± 0.0 μm respectively, which are appropriate sizes for pulmonary delivery by means of a dry powder inhaler. The solubility of the CAF/DAP cocrystal in phosphate buffer pH 7.4, prepared by spray drying using acetone, was 506.5 ± 31.5 μg/mL, while pure crystalline DAP had a measured solubility of 217.1 ± 7.8 μg/mL. In vitro cytotoxicity studies using Calu-3 cells indicated that the cocrystals were not toxic at concentrations of 0.1 and of 1 mM of DAP, while an in vitro permeability study suggested caffeine may contribute to the permeation of DAP by hindering the efflux effect. The results obtained indicate that the CAF/DAP cocrystal, particularly when prepared by the spray drying method, represents a possible suitable approach for inhalation formulations with applications in pulmonary pathologies.
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da Silva LCRP, Todaro V, do Carmo FA, Frattani FS, de Sousa VP, Rodrigues CR, Sathler PC, Cabral LM. A promising oral fucoidan-based antithrombotic nanosystem: Development, activity and safety. Nanotechnology 2018; 29:165102. [PMID: 29424698 DOI: 10.1088/1361-6528/aaae5b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fucoidan-loaded nanoparticles emerge as great candidates to oral anticoagulant therapy, due to increasing of bioavailability and circulation time of this natural anticoagulant. Crosslink between chitosan chains are performed using glutaraldehyde to confer higher gastric pH resistance to nanoparticle matrices. In this work, chitosan-fucoidan nanoparticles, without (NpCF) and with glutaraldehyde crosslink (NpCF 1% and NpCF 2%), were prepared to evaluate their anticoagulant, antithrombotic and hemorrhagic profile. Nanoparticles were characterized by average diameter, polydispersity index, zeta potential, Fourier transform infrared spectroscopy and fucoidan in vitro release. Anticoagulant and antithrombotic activities were determined by in vitro and in vivo models, respectively. Hemorrhagic profile was in vivo evaluated by tail bleeding assay. Preparations showed nanometric and homogeneous average diameters. Zeta potentials of NpCF and NpCF 1% were stable over gastrointestinal pH range, which was confirmed by low fucoidan release in gastric and enteric media. In pH 7.4, NpCF and NpCF 1% demonstrated fucoidan release of 65.5% and 60.6%, respectively, within the first 24 hours. In comparison to fucoidan, NpCF and NpCF 1% showed increased in vitro anticoagulant activity. A significant difference on oral antithrombotic profile of NpCF 1% was found in comparison to fucoidan. Bleeding profile of NpCF and NpCF 1% showed no differences to control group, indicating the safety of these systems. Surprisingly, oral antithrombotic profile of commercially available fucoidan, from Fucus vesiculosus, has not been previously determined, which reveals new possibilities. In this work, significant advances were observed in anticoagulant and antithrombotic profiles of fucoidan through the preparation of NpCF 1%.
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Affiliation(s)
| | - Valerio Todaro
- Trinity College Dublin School of Pharmacy and Pharmaceutical Sciences, Dublin, IRELAND
| | | | - Flavia Serra Frattani
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de JAneiro, RJ, BRAZIL
| | | | | | - Plínio Cunha Sathler
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de JAneiro, RJ, BRAZIL
| | - Lucio Mendes Cabral
- Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Rio de JAneiro, RJ, BRAZIL
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21
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Simon A, Amaro MI, Healy AM, Cabral LM, de Sousa VP. Development of a Discriminative In Vitro Release Test for Rivastigmine Transdermal Patches Using Pharmacopeial Apparatuses: USP 5 and USP 6. AAPS PharmSciTech 2017; 18:2561-2569. [PMID: 28224389 DOI: 10.1208/s12249-017-0738-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 02/01/2017] [Indexed: 01/28/2023] Open
Abstract
The aim of this study was to develop and validate a discriminating in vitro release test to evaluate rivastigmine transdermal patches. The Exelon® Patch was chosen as a model transdermal product. The studies of in vitro release were designed to determine the impact of the official apparatus chosen (USP apparatus 5 and USP apparatus 6), the rotation speed, and the dissolution medium characteristics on the rivastigmine release profile from transdermal patches. Patches with different drug release profiles were tested in order to evaluate the discriminating power of the in vitro release test developed and validated. Variables such as the apparatus type, the dissolution medium, and the rotation speed have a significant influence on the drug release characteristics from a transdermal patch. The in vitro release methodologies using the USP apparatus 5 at 50 rpm and USP apparatus 6 at 25 rpm using the medium phosphate-buffered saline pH 7.4 were considered discriminative and adequate to characterize the rivastigmine (RV) release from a commercial transdermal patch, Exelon® Patch.
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de Almeida Borges VR, Tavares MR, da Silva JH, Tajber L, Boylan F, Ribeiro AF, Nasciutti LE, Cabral LM, de Sousa VP. Development and characterization of poly(lactic-co-glycolic) acid nanoparticles loaded with copaiba oleoresin. Pharm Dev Technol 2017; 23:343-350. [DOI: 10.1080/10837450.2017.1290107] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Marina R. Tavares
- Department of Pharmaceutics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Julianna Henriques da Silva
- Research Program in Cellular Biology and Development, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lidia Tajber
- School of Pharmacy, Trinity College, University of Dublin, Dublin, Ireland
| | - Fabio Boylan
- School of Pharmacy, Trinity College, University of Dublin, Dublin, Ireland
| | - Ana Ferreira Ribeiro
- Department of Pharmaceutics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luiz Eurico Nasciutti
- Research Program in Cellular Biology and Development, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Department of Pharmaceutics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Viana GM, Soares DC, Santana MV, do Amaral LH, Meireles PW, Nunes RP, da Silva LCRP, Aguiar LCDS, Rodrigues CR, de Sousa VP, Castro HC, Abreu PA, Sathler PC, Saraiva EM, Cabral LM. Antileishmanial Thioureas: Synthesis, Biological Activity and in Silico Evaluations of New Promising Derivatives. Chem Pharm Bull (Tokyo) 2017; 65:911-919. [DOI: 10.1248/cpb.c17-00293] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Gil Mendes Viana
- Universidade Federal do Rio de Janeiro, LabTIF, Faculdade de Farmácia, Ilha do Fundão
| | - Deivid Costa Soares
- Universidade Federal do Rio de Janeiro, Laboratório de Imunobiologia das Leishmanioses, Instituto de Microbiologia Paulo de Góes
| | - Marcos Vinicius Santana
- Universidade Federal Fluminense, LABiEMol, Departamento de Biologia Celular e Molecular, Outeiro de São João Baptista
| | | | | | - Raquel Pinto Nunes
- Universidade Federal do Rio de Janeiro, LabTIF, Faculdade de Farmácia, Ilha do Fundão
| | | | | | | | | | - Helena Carla Castro
- Universidade Federal Fluminense, LABiEMol, Departamento de Biologia Celular e Molecular, Outeiro de São João Baptista
| | - Paula Alvarez Abreu
- Laboratório de Modelagem Molecular e Pesquisa em Ciências Farmacêuticas, LaMCiFar. Universidade Federal do Rio de Janeiro-Campus Macaé
| | - Plínio Cunha Sathler
- Universidade Federal do Rio de Janeiro, LabTIF, Faculdade de Farmácia, Ilha do Fundão
| | - Elvira Maria Saraiva
- Universidade Federal do Rio de Janeiro, Laboratório de Imunobiologia das Leishmanioses, Instituto de Microbiologia Paulo de Góes
| | - Lucio Mendes Cabral
- Universidade Federal do Rio de Janeiro, LabTIF, Faculdade de Farmácia, Ilha do Fundão
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de Abreu LCL, Todaro V, Sathler PC, da Silva LCRP, do Carmo FA, Costa CM, Toma HK, Castro HC, Rodrigues CR, de Sousa VP, Cabral LM. Development and Characterization of Nisin Nanoparticles as Potential Alternative for the Recurrent Vaginal Candidiasis Treatment. AAPS PharmSciTech 2016; 17:1421-1427. [PMID: 26810491 DOI: 10.1208/s12249-016-0477-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 01/01/2016] [Indexed: 11/30/2022] Open
Abstract
The aim of this work was the development and characterization of nisin-loaded nanoparticles and the evaluation of its potential antifungal activity. Candidiasis is a fungal infection caused by Candida sp. considered as one of the major public health problem currently. The discovery of antifungal agents that present a reduced or null resistance of Candida sp. and the development of more efficient drug release mechanisms are necessary for the improvement of candidiasis treatment. Nisin, a bacteriocin commercially available for more than 50 years, exhibits antibacterial action in food products with potential antifungal activity. Among several alternatives used to modulate antifungal activity of bacteriocins, polymeric nanoparticles have received great attention due to an effective drug release control and reduction of therapeutic dose, besides the minimization of adverse effects by the preferential accumulation in specific tissues. The nisin nanoparticles were prepared by double emulsification and solvent evaporation methods. Nanoparticles were characterized by dynamic light scattering, zeta potential, Fourier transform infrared, X-ray diffraction, differential scanning calorimetry, and scanning electron microscopy. Antifungal activity was accessed by pour plate method and cell counting using Candida albicans strains. The in vitro release profile and in vitro permeation studies were performed using dialysis bag method and pig vaginal mucosa in Franz diffusion cell, respectively. The results revealed nisin nanoparticles (300 nm) with spherical shape and high loading efficiency (93.88 ± 3.26%). In vitro test results suggest a promising application of these nanosystems as a prophylactic agent in recurrent vulvovaginal candidiasis and other gynecological diseases.
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Anselmo CDS, Mendes TDC, Honorio TDS, do Carmo FA, Cabral LM, de Sousa VP. Development and validation of a dissolution test for lutein tablets and evaluation of intestinal permeability. Food Chem 2016; 210:63-9. [DOI: 10.1016/j.foodchem.2016.04.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 04/13/2016] [Accepted: 04/17/2016] [Indexed: 01/05/2023]
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Costa CM, Louvisse de Abreu LC, dos Santos EP, Franca Presgrave OA, Rocha Pierucci APT, Rodrigues CR, de Sousa VP, Nicoli S, Ricci Junior E, Cabral LM. Preparation and Evaluation of Chitosan Submicroparticles Containing Pilocarpine for Glaucoma Therapy. Curr Drug Deliv 2016; 12:491-503. [PMID: 26324228 DOI: 10.2174/1567201812666150901113240] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 07/24/2015] [Accepted: 08/31/2015] [Indexed: 11/22/2022]
Abstract
The objective of the present study was to optimize the preparation of chitosan submicroparticles and to assess whether they enhanced ocular permeation of pilocarpine. Submicroparticles were produced by spray drying and characterized to determine process yield, encapsulation efficiency, morphology, size distribution, drug-polymeric matrix interaction, porcine sclera permeation as well as ocular irritancy and drug retention. Quantification of pilocarpine using High Performance Liquid Chromatography was found to be selective, linear, precise, accurate and robust. The spray drying method proved to be simple and reproducibly produced particles with satisfactory yields, thus showing potential for industrial scale applications. The pilocarpine-loaded chitosan particles exhibited adequate morphological characteristics as well as high encapsulation efficiency. The particles produced were on a submicrometric scale and compatible with intraocular administration. In pilocarpine-loaded particles, the interaction between pilocarpine and chitosan polymeric matrix resulted in delayed release of the drug, attributed to formation of a reservoir system. The best fit for drug release was obtained using the Higuchi equation. The chitosan submicroparticles enhanced the permeation effect and increased the passage of pilocarpine through porcine sclera and also demonstrated low irritancy potential. Therefore, the particles produced can be considered a promising system for the ocular delivery of pilocarpine.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro. Av. Carlos Chagas Filho, 373, CCS, Rio de Janeiro, RJ, 21941-902, Brazil.
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Simon A, Amaro MI, Healy AM, Cabral LM, de Sousa VP. Comparative evaluation of rivastigmine permeation from a transdermal system in the Franz cell using synthetic membranes and pig ear skin with in vivo-in vitro correlation. Int J Pharm 2016; 512:234-241. [PMID: 27568498 DOI: 10.1016/j.ijpharm.2016.08.052] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/18/2016] [Accepted: 08/24/2016] [Indexed: 10/21/2022]
Abstract
In the present study, in vitro permeation experiments in a Franz diffusion cell were performed using different synthetic polymeric membranes and pig ear skin to evaluate a rivastigmine (RV) transdermal drug delivery system. In vitro-in vivo correlations (IVIVC) were examined to determine the best model membrane. In vitro permeation studies across different synthetic membranes and skin were performed for the Exelon(®) Patch (which contains RV), and the results were compared. Deconvolution of bioavailability data using the Wagner-Nelson method enabled the fraction of RV absorbed to be determined and a point-to-point IVIVC to be established. The synthetic membrane, Strat-M™, showed a RV permeation profile similar to that obtained with pig ear skin (R(2)=0.920). Studies with Strat-M™ resulted in a good and linear IVIVC (R(2)=0.991) when compared with other synthetic membranes that showed R(2) values less than 0.90. The R(2) for pig ear skin was 0.982. Strat-M™ membrane was the only synthetic membrane that adequately simulated skin barrier performance and therefore it can be considered to be a suitable alternative to human or animal skin in evaluating transdermal drug transport, potentially reducing the number of studies requiring human or animal samples.
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Affiliation(s)
- Alice Simon
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bss, sl15, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Maria Inês Amaro
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Anne Marie Healy
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Lucio Mendes Cabral
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bss, sl15, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Valeria Pereira de Sousa
- Department of Drugs and Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bss, sl15, Rio de Janeiro, RJ, 21941-902, Brazil.
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Simon A, Amaro MI, Cabral LM, Healy AM, de Sousa VP. Development of a novel dry powder inhalation formulation for the delivery of rivastigmine hydrogen tartrate. Int J Pharm 2016; 501:124-38. [DOI: 10.1016/j.ijpharm.2016.01.066] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 01/25/2016] [Indexed: 11/24/2022]
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Henriques da Silva J, Borges VRDA, Pereira LDCB, Ferrari R, de Mattos RM, Barros EGDO, Palmero CY, Fernandes PD, de Carvalho PR, Pereira de Sousa V, Cabral LM, Nasciutti LE. The oil-resin of the tropical rainforest tree Copaifera langsdorffii reduces cell viability, changes cell morphology and induces cell death in human endometriotic stromal cultures. ACTA ACUST UNITED AC 2015; 67:1744-55. [PMID: 26407531 DOI: 10.1111/jphp.12479] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 07/28/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The hormonal treatment for endometriosis frequently fails to completely eradicate endometriotic implants. A new therapeutic treatment is needed. This study investigates the in-vitro effect of Copaifera langsdorffii oil-resin on human eutopic and ectopic endometrium stromal cell cultures (EuESCs and EctESCs). METHODS A nanocomposite system containing the copaiba oil-resin (NanoCOR) was developed and acute toxicity test was performed. Endometrial stromal cells (ESCs) from non-endometriotics controls (CESCs), EuESCs and EctESCs were isolated and treated with different concentrations of NanoCOR, at different time intervals to evaluate its effect on cell morphology, proliferation, viability, necrosis and apoptosis induction. KEY FINDINGS When treated with 50 μg/ml of NanoCOR, the morphology of EctESCs changed, as the actin microfilaments were disorganized, disassembled or disrupted. Moreover, at 24 h of treatment with NanoCOR, the EctESCs viability was inhibited, and a significant number of these cells underwent apoptosis. In EuESCs, these effects were observed only at 48 h. Finally, the treatment of EctESCs with NanoCOR increased the lactate dehydrogenase release into the extracellular medium more than in EuESCs. CONCLUSIONS Our data indicate that NanoCOR has a greater impact on the behaviour of human endometriotic stromal cells than on the eutopic endometrium stromal cells, supporting the idea that NanoCOR should be further investigated as a novel and valuable alternative to treat endometriosis.
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Affiliation(s)
- Julianna Henriques da Silva
- Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Vinicius Raphael de Almeida Borges
- Laboratório de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Leonardo da Cunha Boldrini Pereira
- Laboratório de Bioengenharia Tecidual, Diretoria de Metrologia Aplicada às Ciências da Vida, Instituto Nacional de Metrologia, Qualidade e Tecnologia - Inmetro, Xerém, Rio de Janeiro, Brazil
| | - Renato Ferrari
- Instituto de Ginecologia da Universidade Federal do Rio de Janeiro, Hospital Universitário Moncorvo Filho, Centro, Rio de Janeiro, Brazil
| | - Rômulo Medina de Mattos
- Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Eliane Gouveia de Oliveira Barros
- Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Celia Yelimar Palmero
- Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Patricia Dias Fernandes
- Laboratório de Farmacologia da Inflamação e Óxido Nítrico, Programa de Farmacologia Celular e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Patricia Ribeiro de Carvalho
- Laboratório de Farmacologia da Inflamação e Óxido Nítrico, Programa de Farmacologia Celular e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Valeria Pereira de Sousa
- Laboratório de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Lucio Mendes Cabral
- Laboratório de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
| | - Luiz Eurico Nasciutti
- Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Cidade Universitária - Ilha do Fundão, Xerém, Rio de Janeiro, Brazil
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Lourenço AL, Saito MS, Dorneles LEG, Viana GM, Sathler PC, Aguiar LCDS, de Pádula M, Domingos TFS, Fraga AGM, Rodrigues CR, de Sousa VP, Castro HC, Cabral LM. Synthesis and antiplatelet activity of antithrombotic thiourea compounds: biological and structure-activity relationship studies. Molecules 2015; 20:7174-200. [PMID: 25903367 PMCID: PMC6272548 DOI: 10.3390/molecules20047174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 04/08/2015] [Accepted: 04/13/2015] [Indexed: 12/31/2022] Open
Abstract
The incidence of hematological disorders has increased steadily in Western countries despite the advances in drug development. The high expression of the multi-resistance protein 4 in patients with transitory aspirin resistance, points to the importance of finding new molecules, including those that are not affected by these proteins. In this work, we describe the synthesis and biological evaluation of a series of N,N'-disubstituted thioureas derivatives using in vitro and in silico approaches. New designed compounds inhibit the arachidonic acid pathway in human platelets. The most active thioureas (compounds 3d, 3i, 3m and 3p) displayed IC50 values ranging from 29 to 84 µM with direct influence over in vitro PGE2 and TXA2 formation. In silico evaluation of these compounds suggests that direct blockage of the tyrosyl-radical at the COX-1 active site is achieved by strong hydrophobic contacts as well as electrostatic interactions. A low toxicity profile of this series was observed through hemolytic, genotoxic and mutagenic assays. The most active thioureas were able to reduce both PGE2 and TXB2 production in human platelets, suggesting a direct inhibition of COX-1. These results reinforce their promising profile as lead antiplatelet agents for further in vivo experimental investigations.
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Affiliation(s)
- André Luiz Lourenço
- Programa de Pós-graduação em Patologia, Departamento de Patologia, Hospital Universitário Antônio Pedro (HUAP), Universidade Federal Fluminense (UFF), Niterói CEP 24033-900, RJ, Brazil.
| | - Max Seidy Saito
- Programa de Pós-graduação em Patologia, Departamento de Patologia, Hospital Universitário Antônio Pedro (HUAP), Universidade Federal Fluminense (UFF), Niterói CEP 24033-900, RJ, Brazil.
| | - Luís Eduardo Gomes Dorneles
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | - Gil Mendes Viana
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | - Plínio Cunha Sathler
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | | | - Marcelo de Pádula
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | | | - Aline Guerra Manssour Fraga
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | - Carlos Rangel Rodrigues
- ModMolQSAR, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | - Valeria Pereira de Sousa
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
| | - Helena Carla Castro
- LABiEMOL, Departamento de Biologia Celular e Molecular, Universidade Federal Fluminense (UFF), Niterói CEP 24033-900, RJ, Brazil.
| | - Lucio Mendes Cabral
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-902, RJ, Brazil.
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Honório TDS, Pinto EC, Rocha HVA, Esteves VSD, dos Santos TC, Castro HCR, Rodrigues CR, de Sousa VP, Cabral LM. In vitro-in vivo correlation of efavirenz tablets using GastroPlus®. AAPS PharmSciTech 2013; 14:1244-54. [PMID: 23943401 DOI: 10.1208/s12249-013-0016-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 07/29/2013] [Indexed: 11/30/2022] Open
Abstract
The aim of the present work was to use GastroPlus™ software for the prediction of pharmacokinetic profiles and in vitro-in vivo correlation (IVIVC) as tools to optimize the development of new generic medications. GastroPlus™ was used to simulate the gastrointestinal compartment and was based on the advanced compartmental absorption and transit model. Powder dissolution and efavirenz tablet dissolution studies were carried out to generate data from which correlation was established. The simulated plasma profile, based on the physicochemical properties of efavirenz, was almost identical to that observed in vivo for biobatches A and B. A level A IVIVC was established for the dissolution method obtained for the generic candidate using the Wagner-Nelson (r (2) = 0.85) and for Loo-Riegelman models (r(2) = 0.92). The percentage of fraction absorbed indicated that 0.5% sodium lauryl sulfate may be considered a biorelevant dissolution medium for efavirenz tablets. The simulation of gastrointestinal bioavailability and IVIVC obtained from immediate-release tablet formulations suggests that GastroPlus™ is a valuable in silico method for IVIVC and for studies directed at developing formulations of class II drugs.
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de Sousa VP, Crean J, de Almeida Borges VR, Rodrigues CR, Tajber L, Boylan F, Cabral LM. Nanostructured systems containing babassu (Orbignya speciosa) oil as a potential alternative therapy for benign prostatic hyperplasia. Int J Nanomedicine 2013; 8:3129-39. [PMID: 23990721 PMCID: PMC3753148 DOI: 10.2147/ijn.s47731] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The oil of babassu tree nuts (Orbignya speciosa) is a potential alternative for treatment and prophylaxis of benign prostatic hyperplasia. Improved results can be obtained by drug vectorization to the hyperplastic tissue. The main objective of this work was the preparation and characterization of poly(lactic-co-glycolic acid) (PLGA) nanoparticle and clay nanosystems containing babassu oil (BBS). BBS was extracted from the kernels of babassu tree nuts and characterized by gas chromatography-mass spectrometry as well as 1H and 13C nuclear magnetic resonance. BBS-clay nanosystems were obtained by adding polyvinylpyrrolidone, Viscogel B8®, and BBS at a 2:1:1 mass ratio and characterized by X-ray diffraction, thermogravimetric analysis, infrared spectroscopy, and laser diffraction. The PLGA-BBS nanoparticles were prepared by the precipitation-solvent evaporation method. Mean diameter, polydispersity, zeta potential, and scanning electron microscopic images of the nanosystems were analyzed. Thermogravimetric analysis showed successful formation of the nanocomposite. PLGA nanoparticles containing BBS were obtained, with a suitable size that was confirmed by scanning electron microscopy. Both nanostructured systems showed active incorporation yields exceeding 90%. The two systems obtained represent a new and potentially efficient therapy for benign prostatic hyperplasia.
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Affiliation(s)
- Valeria Pereira de Sousa
- Department of Pharmaceutics, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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Cursino ACT, da Silva Lisboa F, dos Santos Pyrrho A, de Sousa VP, Wypych F. Layered double hydroxides intercalated with anionic surfactants/benzophenone as potential materials for sunscreens. J Colloid Interface Sci 2013; 397:88-95. [DOI: 10.1016/j.jcis.2013.01.059] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/04/2013] [Accepted: 01/21/2013] [Indexed: 11/24/2022]
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Nassur C, Alexandria AK, Pomarico L, de Sousa VP, Cabral LM, Maia LC. Characterization of a new TiF4 and β-cyclodextrin inclusion complex and its in vitro evaluation on inhibiting enamel demineralization. Arch Oral Biol 2013; 58:239-47. [DOI: 10.1016/j.archoralbio.2012.11.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 11/06/2012] [Accepted: 11/06/2012] [Indexed: 10/27/2022]
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Pinto EC, do Carmo FA, da Silva Honório T, da Silva Ascenção Barros RDC, Castro HCR, Rodrigues CR, Esteves VSD, Rocha HVA, de Sousa VP, Cabral LM. Influence of the efavirenz micronization on tableting and dissolution. Pharmaceutics 2012; 4:430-41. [PMID: 24300301 PMCID: PMC3834923 DOI: 10.3390/pharmaceutics4030430] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 09/02/2012] [Accepted: 09/02/2012] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study was to propose an analytical procedure that provides the effects of particle size and surface area on dissolution of efavirenz. Five different batches obtained by different micronization processes and with different particle size distribution and surface area were studied. The preformulation studies and dissolution curves were used to confirm the particle size distribution effect on drug solubility. No polymorphic variety or amorphization was observed in the tested batches and the particle size distribution was determined as directly responsible for the improvement of drug dissolution. The influence of the preparation process on the tablets derived from efavirenz was observed in the final dissolution result in which agglomeration, usually seen in non-lipophilic micronized material, was avoided through the use of an appropriate wet granulation method. For these reasons, micronization may represent one viable alternative for the formulation of brick dust drugs.
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Affiliation(s)
- Eduardo Costa Pinto
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
| | - Flávia Almada do Carmo
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
- Author to whom correspondence should be addressed; ; Tel./Fax: +55-21-2562-6605
| | - Thiago da Silva Honório
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
| | - Rita de Cássia da Silva Ascenção Barros
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
| | - Helena Carla Rangel Castro
- Laboratory of Antibiotics, Biochemistry, Institute of Biology, Universidade Federal Fluminense, Campus of Valonguinho, Niterói, RJ, CEP: 24.210-130, Brazil;
| | - Carlos Rangel Rodrigues
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
| | - Valéria Sant'Anna Dantas Esteves
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
- Institute of Drug Technology, Fundação Oswaldo Cruz, Av. Comandante Guaranys, 447, Curicica, Rio de Janeiro, RJ, CEP: 22.775-903, Brazil;
| | - Helvécio Vinícius Antunes Rocha
- Institute of Drug Technology, Fundação Oswaldo Cruz, Av. Comandante Guaranys, 447, Curicica, Rio de Janeiro, RJ, CEP: 22.775-903, Brazil;
| | - Valeria Pereira de Sousa
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
| | - Lucio Mendes Cabral
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco Bss 31, University City, Rio de Janeiro, RJ, CEP: 21.941-902, Brazil; (E.C.P.); (T.S.H.); (R.C.S.A.B.); (C.R.R.); (V.S.D.E.); (V.P.S.); (L.M.C.)
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Celestino MT, Magalhães UDO, Fraga AGM, Carmo FAD, Lione V, Castro HC, Sousa VPD, Rodrigues CR, Cabral LM. Rational use of antioxidants in solid oral pharmaceutical preparations. BRAZ J PHARM SCI 2012. [DOI: 10.1590/s1984-82502012000300007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Antioxidants are currently used as efficient excipients that delay or inhibit the oxidation process of molecules. Excipients are often associated with adverse reactions. Stability studies can guide the search for solutions that minimize or delay the processes of degradation. The ability to predict oxidation reactions in different drugs is important. Methods: This study was conducted to assess the rational use of butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), sodium metabisulfite (SMB), propyl gallate (PG) and cysteine (CYS) in tablet formulations of simvastatin and ketoconazole. These antioxidants were evaluated according to stability parameters and the relationship between efficiency of the antioxidant and chemical structure of the drugs. Results were compared with DPPH tests and computational simulations. BHT was most efficient regarding simvastatin stability, and the most effective BHT concentrations for maintaining stability were 0.5 and 0.1%. In relation to ketoconazole, SMB was most efficient for maintaining content and dissolution profile. The evaluation by DPPH showed that the largest percentage of absorbance reduction was observed for PG, while SMB proved most efficient and had lower consumption of DPPH. The same pattern was observed, albeit with lower efficiency, for the other lipophilic antioxidants such as BHT and BHA. The results of the molecular modeling study demonstrated that electronic properties obtained were correlated with antioxidant activity in solution, being useful for the rational development of liquid pharmaceutical formulations but not for solid oral formulations. This study demonstrated the importance of considering stability parameters and molecular modeling to elucidate the chemical phenomena involved in antioxidant activity, being useful for the rational use of antioxidants in the development of pharmaceutical formulations.
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Simon A, Cabral LM, Sousa VPD. Desenvolvimento e validação de método analítico por CLAE para a quantificação simultânea de dipropionato de betametasona e fosfato sódico de betametasona em suspensão injetável. QUIM NOVA 2012. [DOI: 10.1590/s0100-40422012000300027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Pupe CG, Villardi M, Rodrigues CR, Rocha HVA, Maia LC, de Sousa VP, Cabral LM. Preparation and evaluation of antimicrobial activity of nanosystems for the control of oral pathogens Streptococcus mutans and Candida albicans. Int J Nanomedicine 2011; 6:2581-90. [PMID: 22114490 PMCID: PMC3218573 DOI: 10.2147/ijn.s25667] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background Diseases that affect the buccal cavity are a public health concern nowadays. Chlorhexidine and nystatin are the most commonly used drugs for the control of buccal affections. In the search for more effective antimicrobials, nanotechnology can be successfully used to improve the physical chemical properties of drugs whilst avoiding the undesirable side effects associated with its use. Herein described are studies using nystatin and chlorhexidine with sodium montmorillonite (MMTNa), and chlorhexidine with β-cyclodextrin and two derivatives methyl-β-cyclodextrin and hydroxypropyl-β-cyclodextrin in the development of antimicrobial nanosystems. Methods The nanosystems were prepared by kneading and solubilization followed by freeze-drying technique. The nanosystems were characterized by X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FTIR). Nanosystem antimicrobial activity against Streptococcus mutans and Candida albicans strains was evaluated with inhibition halo analysis. Results The nanocarriers MMTNa and cyclodextrins showed good yields. XRPD, FTIR, and DSC analysis confirmed the proposed nanosystems formation and the suitability of the production methods. The nanosystems that showed best antimicrobial effect were chlorhexidine gluconate (CHX) and cyclodextrin inclusion complexes and CHX:MMTNa 60% cation exchange capacity – 24 hours. Conclusion The nanosystem formulations present higher stability for all chlorhexidine inclusion complexes compared with pure chlorhexidine. The nystatin nanosystems have the potential to mask the bitter taste, justifying subsequent in-vivo studies. For these reasons, further studies are being carried out to evaluate their application in professional formulations.
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Marinho DS, Huf G, Ferreira BLA, Castro H, Rodrigues CR, de Sousa VP, Cabral LM. The study of vancomycin use and its adverse reactions associated to patients of a Brazilian university hospital. BMC Res Notes 2011; 4:236. [PMID: 21762507 PMCID: PMC3163212 DOI: 10.1186/1756-0500-4-236] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Accepted: 07/15/2011] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Vancomycin is an antibiotic of growing importance in the treatment of hospital infections, with particular emphasis on its value in the fight against methicillin-resistant Staphylococcus aureus. However its usage profile must be evaluated to assure maximum benefit and minimum risk. FINDINGS A cross-sectional retrospective study was carried out among inpatients that received vancomycin in a Brazilian quaternary hospital. The occurrence of adverse reactions reported was evaluated in medical records relating to patients taking vancomycin during a one year period. Males comprised 52% (95% CI: 41.7-60.2%) of the sample population, with a mean age of 50.6 (95% CI: 47.2-54.0) years and mean treatment period of 9.7 (95% CI: 8.0-11.5) Days. It was verified that nephrotoxicity occurred in 18.4% (95% CI: 11.3-27.5) of patients, Red man syndrome occurred in 2% (95% CI 0.2-7.2), while the occurrence of thrombocytopenia was 7.1% (95% CI: 2.9-14.2). CONCLUSIONS It may be noted that even after 50 years of use, adverse reactions associated with vancomycin continue with high frequency, presenting a public health problem, especially considering its current use in cases of multidrug resistant infections. In this context, we emphasize the importance of intensive pharmacovigilance in hospital as a surveillance tool after drug approval by the sanitary authority.
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Soares da Silva LFJ, do Carmo FA, de Almeida Borges VR, Monteiro LM, Rodrigues CR, Cabral LM, de Sousa VP. Preparation and evaluation of lidocaine hydrochloride in cyclodextrin inclusion complexes for development of stable gel in association with chlorhexidine gluconate for urogenital use. Int J Nanomedicine 2011; 6:1143-54. [PMID: 21822378 PMCID: PMC3148842 DOI: 10.2147/ijn.s20409] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Indexed: 11/23/2022] Open
Abstract
Inclusions of lidocaine hydrochloride in cyclodextrins were prepared to obtain stable complexes compatible for association with chlorhexidine in a new gel formulation for use in urogenital applications. Two cyclodextrins, β-cyclodextrin and methyl-β-cyclodextrin, were used for encapsulating lidocaine hydrochloride through solubilization and kneading techniques. The lidocaine–cyclodextrin complexes were characterized by ultraviolet spectroscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, and X-ray diffraction. The results revealed that the techniques generated good yields of inclusion products that maintained the functional properties of lidocaine. In addition, the inclusion products obtained improved the compatibility of lidocaine hydrochloride with chlorhexidine in solution and a gel formulation. The gel formulation displayed desirable rheological and physicochemical properties. The results presented here are the first description of the inclusion of lidocaine with cyclodextrins, which improves compatibility with chlorhexidine in formulations for simultaneous delivery.
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Pinto JR, de Sousa VP, Sorenson MM. Redox state of troponin C cysteine in the D/E helix alters the C-domain affinity for the thin filament of vertebrate striated muscle. Biochim Biophys Acta Gen Subj 2010; 1810:391-7. [PMID: 21145939 DOI: 10.1016/j.bbagen.2010.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Revised: 11/10/2010] [Accepted: 11/30/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND Despite a broad spectrum of structural studies, it is not yet clear whether the D/E helix of troponin C (TnC) contributes to the interaction of TnC with troponin I (TnI). Redox modifications at Cys 98 in the D/E helix were explored for clues to TnC binding to the thin filament off-state, using recombinant wild-type TnC and an engineered mutant without Cys (Cys98Leu). METHODS Recombinant proteins and rabbit psoas skinned fibres were reduced with dithiothreitol (DTT) and variously recombined. Changes in affinity of reduced or oxidised TnC for the thin filament were evaluated via TnC binding and dissociation, using a standardized test for maximal force as an index of fibre TnC content. RESULTS All oxidation and reduction effects observed were reversible and led to changes in TnC content. Oxidation (H(2)O(2)) reduced TnC affinity for the filament; reduction (DTT) increased it. Reducing other fibre proteins had no effect. Binding of the Cys-less TnC mutant was not altered by DTT, nor was dissociation of wild-type TnC from reconstituted hybrids (skeletal TnC in cardiac trabeculae). Thus when Cys 98 in the D/E helix of TnC is fully reduced, its binding affinity for the thin filament of skeletal muscle is enhanced and helps to anchor it to the filament. GENERAL SIGNIFICANCE Signal transmission between TnC and the other proteins of the regulatory complex is sensitive to the redox state of Cys 98.
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Affiliation(s)
- José Renato Pinto
- Instituto de Bioquímica Médica, Centro de Ciências da Saúde, Universidale federal do Rio de Janeiro, Cidale Universitária, Rio de Janeiro, Brazil.
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Ribeiro DDO, Lobo BW, Volpato NM, da Veiga VF, Cabral LM, de Sousa VP. Influence of the calcium concentration in the presence of organic phosphorus on the physicochemical compatibility and stability of all-in-one admixtures for neonatal use. Nutr J 2009; 8:51. [PMID: 19857269 PMCID: PMC2772853 DOI: 10.1186/1475-2891-8-51] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Accepted: 10/26/2009] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Preterm infants need high amounts of calcium and phosphorus for bone mineralization, which is difficult to obtain with parenteral feeding due to the low solubility of these salts. The objective of this study was to evaluate the physicochemical compatibility of high concentrations of calcium associated with organic phosphate and its influence on the stability of AIO admixtures for neonatal use. METHODS Three TPN admixture formulas were prepared in multilayered bags. The calcium content of the admixtures was adjusted to 0, 46.5 or 93 mg/100 ml in the presence of a fixed organic phosphate concentration as well as lipids, amino acids, inorganic salts, glucose, vitamins and oligoelements at pH 5.5. Each admixture was stored at 4 degrees C, 25 degrees C or 37 degrees C and evaluated over a period of 7 days. The physicochemical stability parameters evaluated were visual aspect, pH, sterility, osmolality, peroxide formation, precipitation, and the size of lipid globules. RESULTS Color alterations occurred from the first day on, and reversible lipid film formation from the third day of study for the admixtures stored at 25 degrees C and 37 degrees C. According to the parameters evaluated, the admixtures were stable at 4 degrees C; and none of them presented precipitated particles due to calcium/phosphate incompatibility or lipid globules larger than 5 mum, which is the main parameter currently used to evaluate lipid emulsion stability. The admixtures maintained low peroxide levels and osmolarity was appropriate for parenteral administration. CONCLUSION The total calcium and calcium/phosphorus ratios studied appeared not to influence the physicochemical compatibility and stability of AIO admixtures.
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Affiliation(s)
- Daniela de Oliveira Ribeiro
- Departamento de Medicamentos, Faculdade de Farmácia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, CCS, Bloco B ss sala 15, Rio de Janeiro, RJ 21941-902, Brazil
| | - Bianca Waruar Lobo
- Departamento de Medicamentos, Faculdade de Farmácia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, CCS, Bloco B ss sala 15, Rio de Janeiro, RJ 21941-902, Brazil
| | - Nádia Maria Volpato
- Departamento de Medicamentos, Faculdade de Farmácia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, CCS, Bloco B ss sala 15, Rio de Janeiro, RJ 21941-902, Brazil
| | - Venício Féo da Veiga
- Instituto de Microbiologia Professor Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| | - Lúcio Mendes Cabral
- Departamento de Medicamentos, Faculdade de Farmácia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, CCS, Bloco B ss sala 15, Rio de Janeiro, RJ 21941-902, Brazil
| | - Valeria Pereira de Sousa
- Departamento de Medicamentos, Faculdade de Farmácia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, CCS, Bloco B ss sala 15, Rio de Janeiro, RJ 21941-902, Brazil
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Moreira TS, Cid YP, Pierre MBR, Sousa VPD, Kummerle AE, Fraga CAM. Extração e purificação de fármacos anti-inflamatórios não esteroidais ciclo-oxigenase-2 seletivos. QUIM NOVA 2009. [DOI: 10.1590/s0100-40422009000500040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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