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Sousa LRD, Duarte THC, Xavier VF, das Mercês AC, Vieira GM, Martins MD, Carneiro CM, dos Santos VMR, dos Santos ODH, Vieira PMDA. Benznidazole-Loaded Polymeric Nanoparticles for Oral Chemotherapeutic Treatment of Chagas Disease. Pharmaceutics 2024; 16:800. [PMID: 38931921 PMCID: PMC11207087 DOI: 10.3390/pharmaceutics16060800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/04/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Chagas disease (CD) is a worldwide public health problem. Benznidazole (BZ) is the drug used to treat it. However, in its commercial formulation, it has significant side effects and is less effective in the chronic phase of the infection. The development of particulate systems containing BZ is therefore being promoted. The objective of this investigation was to develop polymeric nanoparticles loaded with BZ and examine their trypanocidal impact in vitro. Two formulas (BNP1 and BNP2) were produced through double emulsification and freeze drying. Subsequent to physicochemical and morphological assessment, both formulations exhibited adequate yield, average particle diameter, and zeta potential for oral administration. Cell viability was assessed in H9C2 and RAW 264.7 cells in vitro, revealing no cytotoxicity in cardiomyocytes or detrimental effects in macrophages at specific concentrations. BNP1 and BNP2 enhanced the effect of BZ within 48 h using a treatment of 3.90 μg/mL. The formulations notably improved NO reduction, particularly BNP2. The findings imply that the compositions are suitable for preclinical research, underscoring their potential as substitutes for treating CD. This study aids the quest for new BZ formulations, which are essential in light of the disregard for the treatment of CD and the unfavorable effects associated with its commercial product.
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Affiliation(s)
- Lucas Resende Dutra Sousa
- Laboratório de Fitotecnologia, Programa de Pós-Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (L.R.D.S.); (V.F.X.); (O.D.H.d.S.)
| | - Thays Helena Chaves Duarte
- Laboratório de Morfopatologia, Programa de Pós-Graduação em Ciências Biológicas, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (T.H.C.D.); (A.C.d.M.)
| | - Viviane Flores Xavier
- Laboratório de Fitotecnologia, Programa de Pós-Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (L.R.D.S.); (V.F.X.); (O.D.H.d.S.)
| | - Aline Coelho das Mercês
- Laboratório de Morfopatologia, Programa de Pós-Graduação em Ciências Biológicas, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (T.H.C.D.); (A.C.d.M.)
| | - Gabriel Maia Vieira
- Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte 31270-901, MG, Brazil; (G.M.V.); (M.D.M.)
| | - Maximiliano Delany Martins
- Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte 31270-901, MG, Brazil; (G.M.V.); (M.D.M.)
| | - Cláudia Martins Carneiro
- Laboratório de Imunopatologia, Programa de Pós-Graduação em Ciências Biológicas, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil;
| | - Viviane Martins Rebello dos Santos
- Laboratório de Produtos Naturais e de Síntese Orgânica, Programa de Pós-Graduação em Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil;
| | - Orlando David Henrique dos Santos
- Laboratório de Fitotecnologia, Programa de Pós-Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (L.R.D.S.); (V.F.X.); (O.D.H.d.S.)
| | - Paula Melo de Abreu Vieira
- Laboratório de Morfopatologia, Programa de Pós-Graduação em Ciências Biológicas, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (T.H.C.D.); (A.C.d.M.)
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Zhou H, Shiel E, Bell T, Lin S, Lenhert S. Kinetic Mechanism of Surfactant-Based Molecular Recognition: Selective Permeability across an Oil-Water Interface Regulated by Supramolecular Aggregates. J Phys Chem B 2023; 127:10201-10214. [PMID: 37972386 DOI: 10.1021/acs.jpcb.3c05017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Lipids are known to play a vital role in the molecular organization of all cellular life. Molecular recognition is another fundamental biological process that is generally attributed to biological polymers, such as proteins and nucleic acids. However, there is evidence that aggregates of lipids and lipid-like molecules are also capable of selectively binding to or regulating the partitioning of other molecules. We previously demonstrated that a model two-phase octanol/water system can selectively partition Red 40 and Blue 1 dyes added to an aqueous phase, with the selectivity depending on the surfactant (e.g., cetyltrimethylammonium bromide) dissolved in the organic phase. Here, we elucidate the mechanism of molecular recognition in this system by using quantitative partitioning experiments and molecular dynamics (MD) simulations. Our results indicate that the selectivity for the red dye is thermodynamically favored at all surfactant concentrations, while selectivity for the blue dye is kinetically favored at high surfactant concentrations. The kinetic selectivity for the blue dye correlates with the presence of molecular aggregation at the oil-water interface. Coarse-grained MD simulations elucidate nanoscale supramolecular structures that can preferentially bind one small molecule rather than another at an interface, providing a selectively permeable barrier in the absence of proteins. The results suggest a new supramolecular mechanism for molecular recognition with potential applications in drug delivery, drug discovery, and biosensing.
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Affiliation(s)
- Huanhuan Zhou
- Department of Biological Science and Integrative Nanoscience Institute, Florida State University, Tallahassee, Florida 32306, United States
| | - Emily Shiel
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Tracey Bell
- Department of Biological Science and Integrative Nanoscience Institute, Florida State University, Tallahassee, Florida 32306, United States
| | - Shangchao Lin
- Institute of Engineering Thermophysics, School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Steven Lenhert
- Department of Biological Science and Integrative Nanoscience Institute, Florida State University, Tallahassee, Florida 32306, United States
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Blanco-Fernández G, Blanco-Fernandez B, Fernández-Ferreiro A, Otero-Espinar FJ. Lipidic lyotropic liquid crystals: Insights on biomedical applications. Adv Colloid Interface Sci 2023; 313:102867. [PMID: 36889183 DOI: 10.1016/j.cis.2023.102867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/26/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023]
Abstract
Liquid crystals (LCs) possess unique physicochemical properties, translatable into a wide range of applications. To date, lipidic lyotropic LCs (LLCs) have been extensively explored in drug delivery and imaging owing to the capability to encapsulate and release payloads with different characteristics. The current landscape of lipidic LLCs in biomedical applications is provided in this review. Initially, the main properties, types, methods of fabrication and applications of LCs are showcased. Then, a comprehensive discussion of the main biomedical applications of lipidic LLCs accordingly to the application (drug and biomacromolecule delivery, tissue engineering and molecular imaging) and route of administration is examined. Further discussion of the main limitations and perspectives of lipidic LLCs in biomedical applications are also provided. STATEMENT OF SIGNIFICANCE: Liquid crystals (LCs) are those systems between a solid and liquid state that possess unique morphological and physicochemical properties, translatable into a wide range of biomedical applications. A short description of the properties of LCs, their types and manufacturing procedures is given to serve as a background to the topic. Then, the latest and most innovative research in the field of biomedicine is examined, specifically the areas of drug and biomacromolecule delivery, tissue engineering and molecular imaging. Finally, prospects of LCs in biomedicine are discussed to show future trends and perspectives that might be utilized. This article is an ampliation, improvement and actualization of our previous short forum article "Bringing lipidic lyotropic liquid crystal technology into biomedicine" published in TIPS.
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Affiliation(s)
- Guillermo Blanco-Fernández
- Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Paraquasil Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Institute of Materials (iMATUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Bárbara Blanco-Fernandez
- CIBER in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Madrid, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, Barcelona 08028, Spain.
| | - Anxo Fernández-Ferreiro
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain.
| | - Francisco J Otero-Espinar
- Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Paraquasil Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Institute of Materials (iMATUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain.
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Reina BD, Santezi C, Malheiros SS, Calixto G, Rodero C, Victorelli FD, Chorilli M, Dovigo LN. Liquid crystal precursor system as a vehicle for curcumin-mediated photodynamic inactivation of oral biofilms. JOURNAL OF BIOPHOTONICS 2023; 16:e202200040. [PMID: 36169026 DOI: 10.1002/jbio.202200040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 08/05/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Curcumin has great potential as a photosensitizer, but it has low solubility in aqueous solutions. This study reports the antimicrobial efficacy of photodynamic inactivation (PDI) mediated by a curcumin-loaded liquid crystal precursor (LCP) on in situ dental biofilms. Thirty volunteers used intraoral devices containing enamel samples for 48 hours for biofilm formation. The samples were then removed from the device and treated either with LCP with 160 μM of curcumin plus illumination at 18 J/cm2 (C + L+ group) or with LCP without curcumin in the dark (C - L - group). Following this, the biofilm from the samples was plated for quantifying the viable colonies at 37°C for 48 hours. Specific and nonspecific media were used for the presumptive isolation of Streptococcus mutans, Lactobacillus species/aciduric microorganisms, Candida species, and total microbiota. The C + L+ group showed a highly significant (P < .001) reduction in the log10 (colony forming units/mL) values as compared to the C - L - group for all culture media. Hierarchical linear regression indicated that there may be predictors at individual volunteer level explaining the difference in the PDI efficacy among different individuals (P = .001). The LCP system retained curcumin and released it slowly and continuously, thus protecting the drug from photodegradation. LCP with curcumin is considered effective for the photoinactivation of dental biofilms, but the PDI efficacy may differ based on the host's individual characteristics.
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Affiliation(s)
- Bárbara Donadon Reina
- Department of Social Dentistry, School of Dentistry-São Paulo State University (UNESP), Araraquara, Brazil
| | - Carolina Santezi
- Independent Researcher at the Moment of the Submission (Unaffiliated Researcher), São Carlos, Brazil
| | - Samuel Santana Malheiros
- Department of Social Dentistry, School of Dentistry-São Paulo State University (UNESP), Araraquara, Brazil
| | - Giovana Calixto
- Department of Biosciences, Piracicaba Dental School - University of Campinas (UNICAMP), Piracicaba, Brazil
| | - Camila Rodero
- Department of Drugs and Medicines, School of Pharmaceutical Sciences - São Paulo State University (UNESP), Araraquara, Brazil
| | - Francesca Damiani Victorelli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences - São Paulo State University (UNESP), Araraquara, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences - São Paulo State University (UNESP), Araraquara, Brazil
| | - Lívia Nordi Dovigo
- Department of Social Dentistry, School of Dentistry-São Paulo State University (UNESP), Araraquara, Brazil
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Lotfy NM, Ahmed MA, El Hoffy NM, Bendas ER, Morsi NM. Development and optimization of amphiphilic self-assembly into nanostructured liquid crystals for transdermal delivery of an antidiabetic SGLT2 inhibitor. Drug Deliv 2022; 29:3340-3357. [PMID: 36377493 PMCID: PMC9848419 DOI: 10.1080/10717544.2022.2144546] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The anti-hyperglycemic sodium glucose co-transporter 2 inhibitor Canagliflozin (CFZ) represents a recent antihyperglycemic modality, yet it suffers from low oral bioavailability. The current work aims to formulate CFZ-loaded transdermal nanostructured liquid crystal gel matrix (NLCG) to improve its therapeutic efficiency. Pre-formulation study included the construction of pseudoternary phase diagrams to explore the effect of two conventional amphiphiles against amphiphilic tri-block copolymer in the formulation of NLCG. The influence of different co-solvents was also investigated with the use of monooleine as the oil. Physical characterization, morphological examination and skin permeation were performed for the optimized formulations. The formula of choice was further investigated for skin irritation and chemical stability. Pharmacodynamic evaluation of the successful formula was conducted on hyperglycemic as well as normoglycemic mice. In addition, oral glucose tolerance test was conducted. Results revealed the supremacy of Poloxamer for stabilizing and maximizing liquid crystal gel (LCG) area percentage that reached up to 12.6%. CFZ-NLCG2 isotropic formula showed the highest permeation parameters; maximum flux value of 7460 μg/cm2 h and Q24 of 5327 μg/cm2. Pharmacodynamic evaluation revealed the superiority of the antihyperglycemic activity of CFZ-NLCG2 in fasting mice and its equivalence in the oral glucose tolerance test (OGTT) compared to the oral one. The obtained results confirmed the success of CFZ-NLCG2 in the transdermal delivery of CFZ in therapeutically effective concentration compared to the oral route, bypassing first pass effect; in addition, eliminates the possible gastrointestinal side effects related to the inhibition of intestinal sodium glucose co-transporter (SGLT) and maximizes its selectivity to the desired inhibition of renal SGLT.
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Affiliation(s)
- Nancy M. Lotfy
- Future Factory for Industrial Training, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Mohammed Abdallah Ahmed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt
| | - Nada M. El Hoffy
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt,CONTACT Nada Mohamed El Hoffy Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Ehab R. Bendas
- Department of Pharmacy Practice and Clinical Pharmacy, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Nadia M. Morsi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt
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6
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Ethylferulate-loaded nanoemulsions as a novel anti-inflammatory approach for topical application. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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de Medeiros ASA, Torres-Rêgo M, Lacerda AF, Rocha HAO, do Egito EST, Cornélio AM, Tambourgi DV, Fernandes-Pedrosa MDF, da Silva-Júnior AA. Self-Assembled Cationic-Covered Nanoemulsion as A Novel Biocompatible Immunoadjuvant for Antiserum Production Against Tityus serrulatus Scorpion Venom. Pharmaceutics 2020; 12:pharmaceutics12100927. [PMID: 33003322 PMCID: PMC7599857 DOI: 10.3390/pharmaceutics12100927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 11/16/2022] Open
Abstract
This study assesses the efficacy of different nanoemulsion formulations as new and innovative adjuvants for improving the in vivo immunization against the Tityus serrulatus scorpion venom. Nanoemulsions were designed testing key-variables such as surfactants, co-solvents, and the influence of the temperature, which would be able to induce the phase transition from a liquid crystal to a stable nanoemulsion, assessed for four months. Additionally, cationic-covered nanoemulsion with hyper-branched poly(ethyleneimine) was prepared and its performance was compared to the non-cationic ones. The physicochemical properties of the selected nanoemulsions and the interactions among their involved formulation compounds were carefully monitored. The cytotoxicity studies in murine macrophages (RAW 264.7) and red blood cells were used to compare different formulations. Moreover, the performance of the nanoemulsion systems as biocompatible adjuvants was evaluated using mice immunization protocol. The FTIR shifts and the zeta potential changes (from -18.3 ± 1.0 to + 8.4 ± 1.4) corroborated with the expected supramolecular anchoring of venom proteins on the surface of the nanoemulsion droplets. Cell culture assays demonstrated the non-toxicity of the formulations at concentrations less than 1.0 mg/mL, which were able to inhibit the hemolytic effect of the scorpion venom. The cationic-covered nanoemulsion has shown superior adjuvant activity, revealing the highest IgG titer in the immunized animals compared to both the non-cationic counterpart and the traditional aluminum adjuvant. In this approach, we demonstrate the incredible potential application of nanoemulsions as adjuvants, using a nanotechnology platform for antigen delivery system on immune cells. Additionally, the functionalization with hyper-branched poly(ethyleneimine) enhances this recognition and improves its action in immunization.
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Affiliation(s)
- Arthur Sérgio Avelino de Medeiros
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil; (A.S.A.d.M.); (M.T.-R.); (A.F.L.); (E.S.T.d.E.)
| | - Manoela Torres-Rêgo
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil; (A.S.A.d.M.); (M.T.-R.); (A.F.L.); (E.S.T.d.E.)
- Laboratory of Immunochemistry, Butantan Institute, Av. Vital Brasil, 1500, São Paulo 05503-900, Brazil;
| | - Ariane Ferreira Lacerda
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil; (A.S.A.d.M.); (M.T.-R.); (A.F.L.); (E.S.T.d.E.)
| | - Hugo Alexandre Oliveira Rocha
- Graduate Program of Chemistry, Chemistry Institute, Federal University of Rio Grande do Norte, Avenue Senador Salgado Filho, 3000, Lagoa Nova, Natal 59072-970, Brazil
| | - Eryvaldo Sócrates Tabosa do Egito
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil; (A.S.A.d.M.); (M.T.-R.); (A.F.L.); (E.S.T.d.E.)
| | - Alianda Maira Cornélio
- Department of Biochemistry, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil;
| | - Denise V. Tambourgi
- Department of Morphology, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil;
| | - Matheus de Freitas Fernandes-Pedrosa
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil; (A.S.A.d.M.); (M.T.-R.); (A.F.L.); (E.S.T.d.E.)
- Correspondence: (M.d.F.F.-P.); (A.A.d.S.-J.); Tel.: +55-84-33429820 (M.d.F.F.-P. & A.A.d.S.-J.); Fax: +55-84-33429833 (M.d.F.F.-P. & A.A.d.S.-J.)
| | - Arnóbio Antônio da Silva-Júnior
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59010-180, Brazil; (A.S.A.d.M.); (M.T.-R.); (A.F.L.); (E.S.T.d.E.)
- Correspondence: (M.d.F.F.-P.); (A.A.d.S.-J.); Tel.: +55-84-33429820 (M.d.F.F.-P. & A.A.d.S.-J.); Fax: +55-84-33429833 (M.d.F.F.-P. & A.A.d.S.-J.)
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Ferreira MRA, Daniels R, Soares LAL. Development and evaluation of Classical and Pickering emulsions containing crude or fractionated extracts of Libidibia ferrea pods. Drug Dev Ind Pharm 2020; 46:1185-1198. [PMID: 32536225 DOI: 10.1080/03639045.2020.1782422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Objective: The development of medicinal plants for clinical use represents an important direction in biomedical research, despite the technological difficulties.Significance: The aim of this study was to compare pharmaceutical characteristics and in vitro release of Classical and Pickering emulsions containing crude or fractionated extracts of Libidibia ferrea.Methods: After evaluating the extract's solubility in formulation, a dispersion of hydroxypropyl methylcellulose (HPMC) was prepared in water. For Pickering emulsions, the aqueous phase was HPMC and the oil phase was Miglyol® 812; for Classical emulsions, water with Tween® 20 and Miglyol® 812 with Span® 80 were used for aqueous and oil phases, respectively. Crude or fractionated extracts were added to the aqueous phase (5% w/v). Both phases were heated (40 °C); then, the oil phase was poured into the aqueous phase and homogenized using an Ultra-Turrax. Emulsions were characterized for 90 days by pH, polyphenol content, phytomarker content, macroscopic characteristics, droplet size, and zeta potential.Results: These formulations displayed satisfactory stability for 90 days when stored at 25 °C. Regarding the investigation of rheological properties, Pickering emulsions displayed higher viscosity with lesser deformation than Classical emulsions. Moreover, the emulsions displayed similar in vitro release behavior.Conclusion: Based on the results of present study, the Pickering emulsions were obtainable and displayed higher stability than Classical emulsions. Additionally, maintenance of system integrity points to promising systems for delivery of active pharmaceutical ingredients in the internal phase, despite the complex chemical mixture added to the external phase.
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Affiliation(s)
- Magda Rhayanny Assunção Ferreira
- Department of Pharmaceutical Sciences, Laboratory of Pharmacognosy, Federal University of Pernambuco, Recife, Brazil.,Postgraduate Program in Pharmaceutical Sciences (PPgCF), Federal University of Pernambuco, Recife, Brazil
| | - Rolf Daniels
- Pharmaceutical Technology, University of Tübingen, Tübingen, Germany
| | - Luiz Alberto Lira Soares
- Department of Pharmaceutical Sciences, Laboratory of Pharmacognosy, Federal University of Pernambuco, Recife, Brazil.,Postgraduate Program in Pharmaceutical Sciences (PPgCF), Federal University of Pernambuco, Recife, Brazil
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Tailoring microstructural, drug release properties, and antichagasic efficacy of biocompatible oil-in-water benznidazol-loaded nanoemulsions. Int J Pharm 2018; 555:36-48. [PMID: 30448310 DOI: 10.1016/j.ijpharm.2018.11.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/12/2018] [Accepted: 11/15/2018] [Indexed: 12/25/2022]
Abstract
This study explored the transition of lamellar-type liquid crystal (LLC) to biocompatible oil-in-water nanoemulsions able to modify benznidazole (BNZ) release and target the drug to cells infected with the T. cruzi parasite. Three cosolvents (2methylpyrrolidone [NMP], polyethylene glycol [POL], and propylene glycol [PRO] were tested to induce the transition of anisotropic LLC systems to isotropic nanoemulsions. Mixtures of soy phosphatidylcholine with sodium oleate stabilized the dispersions of medium chain triglyceride in water. Rheological measurements, polarized microscopy, and small angle X-ray scattering demonstrated that there is a phase transition from LLC to desired nanoemulsions. These small and narrow droplet-sized nanocarriers exhibited some advantages and promising features, such as the enhanced BNZ aqueous solubility and slow drug release rate. In vitro cell biocompatibility of formulations was assessed in the Vero E6 and SiHa cell lines. Drug-loaded nanoemulsions inhibited the epimastigote growth of the T. cruzi parasite (IC50 0.208 ± 0.052 μg mL-1) and reduced its infective life form trypomastigote (IC50 0.392 ± 0.107 μg mL-1). The oil-in-water nanoemulsions were demonstrated as promising biocompatible liquid drug delivery systems capable of improving the BNZ trypanocidal activity for the treatment of Chagas disease.
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de Araújo MM, Streck L, de Souza I, Caroni ALP, Fernandes-Pedrosa MF, Sarmento VH, da Silva-Júnior AA. Surfactant-oil interactions overcoming physicochemical instability and insoluble praziquantel loading in soybean oil dispersions. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Temperature and composition effects on the morphology of o/w dispersions based on poly(oxyethylene 20) sorbitan monolaurate and sorbitan monolaurate. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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de Oliveira AR, Mesquita PC, Machado PRL, Farias KJS, de Almeida YMB, Fernandes-Pedrosa MF, Cornélio AM, do Egito EST, da Silva-Júnior AA. Monitoring structural features, biocompatibility and biological efficacy of gamma-irradiated methotrexate-loaded spray-dried microparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:438-448. [PMID: 28866185 DOI: 10.1016/j.msec.2017.06.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 05/26/2017] [Accepted: 06/16/2017] [Indexed: 12/14/2022]
Abstract
In this study, biodegradable and biocompatible gamma irradiated poly-(dl-lactide-co-glycolide) (PLGA) spray-dried microparticles were prepared aiming to improve the efficacy of methotrexate (MTX). The experimental design included three formulations of microparticles containing distinct drug amount (9%, 18%, and 27% w/w) and three distinct gamma irradiation dose (15kGy, 25kGy, and 30kGy). The physicochemical and drug release properties of the microparticles supported their biocompatibility and biological efficacy studies in different cell lines. The irradiation induced slight changes in the spherical shape of the microparticles and the formation of free radicals was dependent on the drug loading. However, the amorphous character, particle size, drug loading, and drug release rate of the microparticles were preserved. The drug release data from all microparticles formulation were evaluated by using four drug kinetic models and by comparison of their similarity factor (f2). The gamma irradiation did not induce changes in the biocompatibility of PLGA microparticles and in the biological activity of the MTX-loaded microparticles. Finally, the spray-dried MTX-loaded PLGA microparticles enhanced the efficacy of the drug in the human cervical cancer cells (SiHa cell line). This study demonstrated the feasibility of the gamma irradiated spray dried PLGA microparticles for prolonged release of MTX, supporting a promising antitumor-drug delivery system for parenteral (subcutaneous) or pulmonary use.
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Affiliation(s)
- Alice R de Oliveira
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil
| | - Philippe C Mesquita
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil
| | - Paula R L Machado
- Department of Clinical Analysis and Toxicology, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil
| | - Kleber J S Farias
- Department of Clinical Analysis and Toxicology, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil
| | - Yêda M B de Almeida
- Department of Chemical Engineering, Federal University of Pernambuco, UFPE, 50740-521 Recife, PE, Brazil
| | - Matheus F Fernandes-Pedrosa
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil
| | - Alianda M Cornélio
- Department of Morphology, Federal University of Rio Grande do Norte, UFRN, 59078-970 Natal, RN, Brazil
| | - Eryvaldo Sócrates T do Egito
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil
| | - Arnóbio A da Silva-Júnior
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, 59012-570 Natal, RN, Brazil.
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