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Oliveira JV, Almeida GC, Nogueira MCBL, Aguiar Júnior FCA, Melo AO, Silva TDS, Santos NPS, Magalhães NSS, Melo SJ, Falcão EPS. 4-amino-2-phenyl-6-(p-fluorophenyl)-5-carbonitrile-pyrimidine-bis-substituted-loaded liposomes as promising system for cancer treatment. AN ACAD BRAS CIENC 2023; 95:e20211078. [PMID: 37436228 DOI: 10.1590/0001-3765202320211078] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 11/08/2022] [Indexed: 07/13/2023] Open
Abstract
The aim of the present study was to perform in vitro and in vivo assessments of the antineoplastic action of 4-amino-pyrimidine encapsulated in liposomes. Liposomes were prepared and characterized for particle size and drug encapsulation and submitted to long-term stability tests. Cytotoxicity assays were performed in HeLa cells. Antineoplastic activity was investigated using the experimental sarcoma 180 tumor in Swiss albino mice. Encapsulation efficiency was 82.93 ± 0.04% and no significant changes were found with respect to particle size or pH after centrifugation and mechanical agitation tests. The in vitro results at concentration of 20 μg/mL indicated a considerable reduction in cell viability after treatment with encapsulated pyrimidine (75.91%). The in vivo assays using the compounds in encapsulated and free forms and 5-fluorouracil achieved tumor inhibition rates of 66.47 ± 26.8%, 50.46 ± 16.24% and 14.47 ± 9.22%, respectively. Mitotic counts demonstrated a greater reduction in the number of mitoses in animals treated with liposomal pyrimidine (32.15%) compared to those treated with the pyrimidine free (87.69%) and 5-fluorouracil (71.39%). This study demonstrated that the development of liposome formulations containing 4-amino-pyrimidine is a promising alternative for overcoming limitations related to the toxicity of current cancer treatment, ensuring greater therapeutic efficacy.
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Affiliation(s)
- Janice V Oliveira
- Programa de Pós-Graduação em Saúde Humana, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Rua Alto do Reservatório, s/n, Alto José Leal, 55608-680 Vitória de Santo Antão, PE, Brazil
| | - Gleybson C Almeida
- Programa de Pós-Gaduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Prédio das Pós-Graduações do Centro de Ciências da Saúde, Avenida da Engenharia, s/n, 2° Andar, Cidade Universitária, 50740-600 Recife, PE, Brazil
| | - Mariane C B L Nogueira
- Universidade Federal de Pernambuco, Laboratório de Imunopatologia Keizo-Asami (LIKA), Av. Professor Moraes Rego, 1235, Cidade Universitária, 55670-901 Recife, PE, Brazil
- Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Laboratório de Nanotecnologia, Biotecnologia e Cultura de Células, Rua Alto do Reservatório, s/n, Alto José Leal, 55608-680 Vitória de Santo Antão, PE, Brazil
| | - Francisco C A Aguiar Júnior
- Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Laboratório de Biotecnologia e Fármacos, Rua Alto do Reservatório, s/n, Alto José Leal, 55608-680 Vitória de Santo Antão, PE, Brazil
| | - Audenes O Melo
- Programa de Pós-Graduação em Saúde Humana, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Rua Alto do Reservatório, s/n, Alto José Leal, 55608-680 Vitória de Santo Antão, PE, Brazil
| | - Thiago D S Silva
- Universidade Federal de Pernambuco, Departamento de Bioquímica, Laboratório de Produtos Naturais, Rodovia Mário Covas, s/n, Cidade Universitária, 50670-420 Recife, PE, Brazil
| | - Noemia P S Santos
- Programa de Pós-Graduação em Saúde Humana, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Rua Alto do Reservatório, s/n, Alto José Leal, 55608-680 Vitória de Santo Antão, PE, Brazil
- Universidade Federal de Pernambuco, Laboratório de Imunopatologia Keizo-Asami (LIKA), Av. Professor Moraes Rego, 1235, Cidade Universitária, 55670-901 Recife, PE, Brazil
| | - Nereide S S Magalhães
- Programa de Pós-Gaduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Prédio das Pós-Graduações do Centro de Ciências da Saúde, Avenida da Engenharia, s/n, 2° Andar, Cidade Universitária, 50740-600 Recife, PE, Brazil
- Universidade Federal de Pernambuco, Laboratório de Imunopatologia Keizo-Asami (LIKA), Av. Professor Moraes Rego, 1235, Cidade Universitária, 55670-901 Recife, PE, Brazil
| | - Sebastião J Melo
- Programa de Pós-Gaduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Prédio das Pós-Graduações do Centro de Ciências da Saúde, Avenida da Engenharia, s/n, 2° Andar, Cidade Universitária, 50740-600 Recife, PE, Brazil
- Universidade Federal de Pernambuco, Departamento de Antibióticos, Laboratório de Química e Síntese de Produtos Naturais, Avenida Professor Moraes Rego, 1235, Cidade Universitária, 50670-901 Recife, PE, Brazil
| | - Emerson P S Falcão
- Programa de Pós-Graduação em Saúde Humana, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Rua Alto do Reservatório, s/n, Alto José Leal, 55608-680 Vitória de Santo Antão, PE, Brazil
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Graván P, Aguilera-Garrido A, Marchal JA, Navarro-Marchal SA, Galisteo-González F. Lipid-core nanoparticles: Classification, preparation methods, routes of administration and recent advances in cancer treatment. Adv Colloid Interface Sci 2023; 314:102871. [PMID: 36958181 DOI: 10.1016/j.cis.2023.102871] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 02/03/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
Nanotechnological drug delivery platforms represent a new paradigm for cancer therapeutics as they improve the pharmacokinetic profile and distribution of chemotherapeutic agents over conventional formulations. Among nanoparticles, lipid-based nanoplatforms possessing a lipid core, that is, lipid-core nanoparticles (LCNPs), have gained increasing interest due to lipid properties such as high solubilizing potential, versatility, biocompatibility, and biodegradability. However, due to the wide spectrum of morphologies and types of LCNPs, there is a lack of consensus regarding their terminology and classification. According to the current state-of-the-art in this critical review, LCNPs are defined and classified based on the state of their lipidic components in liquid lipid nanoparticles (LLNs). These include lipid nanoemulsions (LNEs) and lipid nanocapsules (LNCs), solid lipid nanoparticles (SLNs) and nanostructured lipid nanocarriers (NLCs). In addition, we present a comprehensive and comparative description of the methods employed for their preparation, routes of administration and the fundamental role of physicochemical properties of LCNPs for efficient antitumoral drug-delivery application. Market available LCNPs, clinical trials and preclinical in vivo studies of promising LCNPs as potential treatments for different cancer pathologies are summarized.
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Affiliation(s)
- Pablo Graván
- Department of Applied Physics, Faculty of Science, University of Granada, 18071 Granada, Spain; Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, 18016 Granada, Spain; Instituto de Investigación Biosanitaria de Granada ibs.GRANADA, 18012 Granada, Spain; Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, 18016 Granada, Spain; Excellence Research Unit Modelling Nature (MNat), University of Granada, 18016 Granada, Spain; BioFab i3D - Biofabrication and 3D (bio)printing laboratory, University of Granada, 18100 Granada, Spain
| | - Aixa Aguilera-Garrido
- Department of Applied Physics, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Juan Antonio Marchal
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, 18016 Granada, Spain; Instituto de Investigación Biosanitaria de Granada ibs.GRANADA, 18012 Granada, Spain; Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, 18016 Granada, Spain; Excellence Research Unit Modelling Nature (MNat), University of Granada, 18016 Granada, Spain; BioFab i3D - Biofabrication and 3D (bio)printing laboratory, University of Granada, 18100 Granada, Spain
| | - Saúl A Navarro-Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, 18016 Granada, Spain; Excellence Research Unit Modelling Nature (MNat), University of Granada, 18016 Granada, Spain; Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, EH4 2XU Edinburgh, UK.
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Asfour MH, Abd El-Alim SH, Kassem AA, Salama A, Gouda AS, Nazim WS, Nashaat NH, Hemimi M, Abdel Meguid N. Vitamin D 3-Loaded Nanoemulsions as a Potential Drug Delivery System for Autistic Children: Formulation Development, Safety, and Pharmacokinetic Studies. AAPS PharmSciTech 2023; 24:58. [PMID: 36759398 DOI: 10.1208/s12249-023-02501-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 12/27/2022] [Indexed: 02/11/2023] Open
Abstract
The aim of the current study is the development of a vitamin D3 (VD3)-loaded nanoemulsion (NE) formulation to improve VD3 oral bioavailability for management of vitamin D inadequacy in autistic children. Eight NE formulations were prepared by high-speed homogenization followed by ultrasonication. Four vegetable oils were employed along with two concentrations of Span 20 as the emulsifier. Glycerol, fructose, and mango flavor were included as viscosity modifier, sweetening, and flavoring agents, respectively. The prepared VD3-loaded NE formulations exhibited high drug content (> 98%), droplet size (DS) ranging from 61.15 to 129.8 nm with narrow size distribution, zeta potential values between - 9.83 and - 19.22 mV, and acceptable pH values (4.59-5.89). Storage stability showed that NE formulations underwent coalescence and phase separation during 6 months at room temperature, whereas at refrigerated conditions, formulations showed slight creaming. The optimum formulation (VD3-NE6) revealed a non-significant DS growth at refrigerated conditions and spherical morphology under transmission electron microscopy. VD3-NE6 did not produce any toxic effects to rats treated orally for 3 months, where normal blood picture and kidney and liver functions were observed compared to control rats. Also, serum calcium, oxidative stress, and apoptosis biomarkers remained within normal levels, indicating the safety of the optimum formulation. Furthermore, evaluation of VD3-NE6 oral bioavailability depicted a significant increase in AUC0-72 and Cmax with decreased Tmax compared to plain VD3. The optimum formulation demonstrated improved stability, safety, and oral bioavailability indicating the potential for successful management of vitamin D deficiency in autistic children.
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Affiliation(s)
- Marwa Hasanein Asfour
- Pharmaceutical Technology Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Sameh Hosam Abd El-Alim
- Pharmaceutical Technology Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt.
| | - Ahmed Alaa Kassem
- Pharmaceutical Technology Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Abeer Salama
- Pharmacology Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Amr Sobhi Gouda
- Biochemical Genetics Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Walaa Samy Nazim
- Biochemical Genetics Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Neveen Hassan Nashaat
- Research On Children With Special Needs Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Maha Hemimi
- Research On Children With Special Needs Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Nagwa Abdel Meguid
- Research On Children With Special Needs Department, National Research Centre, El-Buhouth St., Dokki, 12622, Cairo, Egypt
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Said-Elbahr R, Nasr M, Alhnan MA, Taha I, Sammour O. Simultaneous pulmonary administration of celecoxib and naringin using a nebulization-friendly nanoemulsion: A device-targeted delivery for treatment of lung cancer. Expert Opin Drug Deliv 2022; 19:611-622. [PMID: 35538642 DOI: 10.1080/17425247.2022.2076833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Lung cancer is a principal cause of death worldwide, and its treatment is very challenging. Nebulization offers a promising means of targeting drugs to their site of action in the lung. RESEARCH DESIGN AND METHODS In the present study, nebulizable oil in water nanoemulsion formulations were co-loaded with naringin/celecoxib, and tested for pulmonary administration by different nebulizer types. RESULTS : The translucent appearance of nanoemulsion formulations was revealed, with particle size (75-106 nm), zeta potential (-3.42 to -4.86 mV), and controlled in-vitro release profiles for both drugs. The nanoemulsions showed favourable stability profiles, and superior cytotoxicity on A549 lung cancer cells. Aerosolization studies on the selected nanoemulsion formulation revealed its high stability during nebulization, with the generation of an aerosol of small volume median diameter, and mass median aerodynamic diameter lower than 5 µm. Moreover, it demonstrated considerable safety and bioaccumulation in lung tissues, in addition to accumulation in the brain, liver and bones which are the main organs to which lung cancer metastasizes. CONCLUSIONS Nanoemulsion proved to be a promising nebulizable system, which paves the way for treatment of pulmonary diseases other than lung cancer.
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Affiliation(s)
- Ramy Said-Elbahr
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.,School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, UK
| | - Maha Nasr
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Mohamed A Alhnan
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, UK.,Institute of Pharmaceutical Science, King's College London, London, UK
| | - Ismail Taha
- Hot lab. Centre, Atomic Energy Authority, Cairo, Egypt.,Faculty of Pharmacy, AL Bayan University, Baghdad, Iraq
| | - Omaima Sammour
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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Simvastatin-loaded nanoemulsions: development, characterization, stability study and toxicity assays. Ther Deliv 2020; 11:497-505. [PMID: 32842914 DOI: 10.4155/tde-2020-0067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Aim: The aim of this study is to prepare and characterize simvastatin-loaded nanoemulsions (SIM-LN) as well as evaluate their physicochemical properties and toxicity. Methodology & results: The SIM-LN were prepared, their characteristics evaluated for 30 days, and after that, the SIM-LN toxicity was evaluated using Vero cell culture and the in vivo model of Caenorhabditis elegans. The prepared SIM-LN had an average droplet size of 139 ± 22 nm, with high encapsulation rate (>98.4%). The storage at room temperature proved to be the most optimal condition. Toxicity assays demonstrated no toxicity. Conclusion: It was demonstrated that the surfactants used as emulsifiers optimized the properties without side effects, because no toxicity was measured in preliminary tests.
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Antioxidant and antimicrobial poly-ε-caprolactone nanoparticles loaded with Cymbopogon martinii essential oil. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101499] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Teixeira M, Pedro M, Nascimento MSJ, Pinto MMM, Barbosa CM. Development and characterization of PLGA nanoparticles containing 1,3-dihydroxy-2-methylxanthone with improved antitumor activity on a human breast cancer cell line. Pharm Dev Technol 2019; 24:1104-1114. [DOI: 10.1080/10837450.2019.1638398] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Maribel Teixeira
- CESPU, Institute of Research and Advanced Training in Health Sciences and Technologies, Gandra, Portugal
| | - Madalena Pedro
- CESPU, Institute of Research and Advanced Training in Health Sciences and Technologies, Gandra, Portugal
| | - Maria São José Nascimento
- Laboratory of Microbiology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Madalena M. M. Pinto
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Matosinhos, Portugal
| | - Carlos Maurício Barbosa
- Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
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Araújo RS, Garcia GM, Vilela JMC, Andrade MS, Oliveira LAM, Kano EK, Lange CC, Brito MAVPE, Brandão HDM, Mosqueira VCF. Cloxacillin benzathine-loaded polymeric nanocapsules: Physicochemical characterization, cell uptake, and intramammary antimicrobial effect. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:110006. [PMID: 31499941 DOI: 10.1016/j.msec.2019.110006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 05/30/2019] [Accepted: 07/19/2019] [Indexed: 12/22/2022]
Abstract
The present work shows the development and evaluation of the veterinary antibiotic cloxacillin benzathine (CLOXB) loaded into poly-ε-caprolactone (PCL) nanocapsules (NC), as a potential new treatment strategy to manage bovine intramammary infections, such as mastitis. Staphylococcus aureus-induced mastitis is often a recurrent disease due to the persistence of bacteria within infected cells. CLOXB-PCL NC were prepared by interfacial deposition of preformed biodegradable polymer followed by solvent displacement method. The mean diameter of NC varied from 241 to 428 nm and from 326 to 375 nm, when determined by dynamic light scattering and by atomic force microscopy, respectively. The zeta potential of NC was negative and varied from -28 to -51 mV. In vitro release studies from the NC were performed in two media under sink conditions: PBS with 1% polyethylene glycol or milk. A reversed-phase HPLC method was developed to determine the NC entrapment efficiency and kinetics of CLOXB release from the NC. Free CLOXB dissolution occurred very fast in both media, while drug release from the NC was slower and incomplete (below 50%) after 9 h. CLOXB release kinetics from polymeric NC was fitted with the Korsmeyer-Peppas model indicating that CLOXB release is governed by diffusion following Fick's law. The fluorescence confocal microscopy images of macrophage-like J774A.1 cells reveal NC uptake and internalization in vitro. In addition, antimicrobial effect of the intramammary administration of CLOXB-PCL NC in cows with mastitis resulted in no clinical signs of toxicity and allowed complete pathogen elimination after treatment. The in vivo results obtained in this work suggest that CLOXB-PCL NC could be a promising formulation for the treatment of intramammary infections in cattle, considering their physicochemical properties, release profiles and effects on bovine mastitis control.
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Affiliation(s)
- Raquel Silva Araújo
- Laboratory of Pharmaceutics and Nanobiotechnology (LDGNano), School of Pharmacy, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Minas Gerais 35400-000, Brazil.
| | - Giani Martins Garcia
- Laboratory of Pharmaceutics and Nanobiotechnology (LDGNano), School of Pharmacy, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Minas Gerais 35400-000, Brazil
| | | | | | | | - Eunice Kazue Kano
- Laboratory of Pharmaceutics and Nanobiotechnology (LDGNano), School of Pharmacy, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Minas Gerais 35400-000, Brazil.
| | - Carla Christine Lange
- Embrapa Gado de Leite, Rua Eugênio do Nascimento, 610 Dom Bosco, Juiz de Fora, MG 36038-330, Brazil.
| | | | - Humberto de Mello Brandão
- Embrapa Gado de Leite, Rua Eugênio do Nascimento, 610 Dom Bosco, Juiz de Fora, MG 36038-330, Brazil.
| | - Vanessa Carla Furtado Mosqueira
- Laboratory of Pharmaceutics and Nanobiotechnology (LDGNano), School of Pharmacy, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Minas Gerais 35400-000, Brazil.
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Wilhelm EA, Vogt AG, Reis AS, Pinz MP, de Souza JF, Haas SE, Pereira AAM, Fajardo AR, Luchese C. The efficacy of microemulsion-based delivery to improve vitamin E properties: evaluation of the antinociceptive, antioxidant, antidepressant- and anxiolytic-like activities in mice. J Pharm Pharmacol 2018; 70:1723-1732. [DOI: 10.1111/jphp.13018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 09/02/2018] [Indexed: 01/24/2023]
Abstract
Abstract
Objectives
A microemulsion-based delivery system was designed to improve vitamin E (VE) properties, and its antinociceptive, antioxidant, antidepressant- and anxiolytic-like activities in mice were evaluated.
Methods
Male Swiss mice received, by intragastric route, canola oil (20 ml/kg), blank microemulsion (B-ME) (20 ml/kg), VE free (VE-F) (200 mg/kg) or VE microemulsion (VE-ME) (200 mg/kg). In acute treatment, a single dose of treatments was administrated and 30 min after behavioural tests were performed. In the subchronic treatment, mice received such treatments, once a day, for 8 days. On the eighth day, behavioural tests were performed.
Key findings
In the subchronic treatment, VE-ME increased entries and spent time in the open arms in the elevated plus-maze test and decreased the immobility time in the tail suspension test, but no change was found after acute treatment. Acute and subchronic treatments with VE-ME increased response latency to thermal stimulus in the hot-plate test. VE-ME decreased the thiobarbituric acid reactive species levels in the acute and subchronic protocols. Additionally, in subchronic treatment, VE-ME increased renal catalase activity, but VE-F reduced its activity.
Conclusions
Vitamin E-microemulsions showed antioxidant, antinociceptive, antidepressant- and anxiolytic-like actions; thus, ME-based delivery improved pharmacological properties of VE.
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Affiliation(s)
- Ethel A Wilhelm
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Ane G Vogt
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Angélica S Reis
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Mikaela P Pinz
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Jaqueline F de Souza
- Laboratório de Tecnologia e Desenvolvimento de Materiais Poliméricos e Compósitos (LaCoPol), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Sandra E Haas
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | | | - André R Fajardo
- Laboratório de Tecnologia e Desenvolvimento de Materiais Poliméricos e Compósitos (LaCoPol), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Cristiane Luchese
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
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Abuçafy MP, Caetano BL, Chiari-Andréo BG, Fonseca-Santos B, do Santos AM, Chorilli M, Chiavacci LA. Supramolecular cyclodextrin-based metal-organic frameworks as efficient carrier for anti-inflammatory drugs. Eur J Pharm Biopharm 2018; 127:112-119. [PMID: 29428794 DOI: 10.1016/j.ejpb.2018.02.009] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 01/26/2018] [Accepted: 02/07/2018] [Indexed: 11/19/2022]
Abstract
Drug delivery systems have been used to reduce adverse effects and improve the efficacy of therapies. Drug carriers have been developed over the years, but they have limitations. γ-cyclodextrin-based metal-organic frameworks (γ-CD-MOF) have significant advantages due to their biocompatibility and environmental safety, besides crystallinity and porosity. Herein, γ-CD-MOFs were synthesised with different metals as nodes and investigated. Uniform mesoporous γ-CD-MOFs were obtained and showed an absence of toxicity in HepG2 and Caco-2 cells. The longer controlled release was verified for γ-CD-MOFs, with a maximum of 62% released in 12 h. An inflammation experiment was performed in mice and activity equivalent to the positive control was verified. γ-KCD-MOFs and γ-NaCD-MOFs reached activity after 6 h of administration, however this happened after 24 h in γ-FeCD-MOFs, being more effective than the positive control. Considering the ability for drug entrapment, easy preparation and controlled release, this class of material allows potential applications in drug delivery systems.
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Affiliation(s)
- Marina P Abuçafy
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil
| | - Bruno L Caetano
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil
| | - Bruna G Chiari-Andréo
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil; Department of Biological and Health Sciences, Universidade de Araraquara - UNIARA, Araraquara, SP, Brazil
| | - Bruno Fonseca-Santos
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil
| | - Aline M do Santos
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil
| | - Leila A Chiavacci
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil.
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Gomes GS, Maciel TR, Piegas EM, Michels LR, Colomé LM, Freddo RJ, Ávila DSD, Gundel A, Haas SE. Optimization of Curcuma Oil/Quinine-Loaded Nanocapsules for Malaria Treatment. AAPS PharmSciTech 2018; 19:551-564. [PMID: 28875471 DOI: 10.1208/s12249-017-0854-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/30/2017] [Indexed: 11/30/2022] Open
Abstract
Quinine, a treatment used in chloroquine-resistant falciparum malaria, was loaded into poly(ɛ-caprolactone) or Eudragit® RS100 nanocapsules using Curcuma oil as the oil-based core. Until now, the effect of cationic nanocapsules on malaria has not been reported. A 24 factorial design was adopted using, as independent variables, the concentration of Curcuma oil, presence of quinine, type of polymer, and aqueous surfactant. Diameter, zeta potential, and pH were the responses studied. The formulations were also evaluated for drug content, encapsulation efficiency, photostability, and antimalarial activity against Plasmodium berghei-infected mice. The type of polymer influenced all of the responses studied. Quinine-loaded Eudragit® RS100 (F13) and PCL nanocapsules (F9), both with polysorbate 80 coating, showed nanometric particle size, positive zeta potential, neutral pH, high drug content, and quinine photoprotection ability; thus, these nanocapsules were selected for in vivo tests. Both formulations showed lower levels of parasitemia from the beginning of the experiment (5.78 ± 3.60 and 4.76 ± 3.46% for F9 and F13, respectively) and highest survival mean time (15.3 ± 2.0 and 14.9 ± 5.6 days for F9 and F13, respectively). F9 and F13 showed significant survival curve compared to saline, thus demonstrating that nanoencapsulation improved bioefficacy of QN and co-encapsulated curcuminoids, regardless of the surface charge.
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Influence of polymer concentration on the properties of nano-emulsions and nanoparticles obtained by a low-energy method. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.06.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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13
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Benvegnú DM, Roversi K, Barcelos RCS, Trevizol F, Pase CS, Segat HJ, Dias VT, Savian AL, Piccoli BL, Piccolo J, Dutra-Filho CS, Emanuelli T, de Bona da Silva C, Beck RCR, Burger ME. Effects of Fish and Grape Seed Oils as Core of Haloperidol-Loaded Nanocapsules on Oral Dyskinesia in Rats. Neurochem Res 2017; 43:477-487. [DOI: 10.1007/s11064-017-2444-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/17/2017] [Accepted: 11/30/2017] [Indexed: 01/10/2023]
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Vargas de Oliveira EC, Carneiro ZA, de Albuquerque S, Marchetti JM. Development and Evaluation of a Nanoemulsion Containing Ursolic Acid: a Promising Trypanocidal Agent : Nanoemulsion with Ursolic Acid Against T. cruzi. AAPS PharmSciTech 2017; 18:2551-2560. [PMID: 28224391 DOI: 10.1208/s12249-017-0736-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/02/2017] [Indexed: 11/30/2022] Open
Abstract
Over a hundred years after the discovery of Chagas disease, this ailment continues to affect thousands of people. For more than 40 years, only two drugs have been available to treat it. Ursolic acid is a naturally occurring terpene that has shown a good trypanocidal action. However, the hydrophobicity of this compound presents a challenge for the development of proper delivery systems. Nanostructured systems are a prominent in delivering lipophilic drugs. Thus, a nanoemulsion containing ursolic acid was developed and had its trypanocidal activity and cytotoxicity evaluated. Pseudo-ternary phase diagrams and hydrophilic-lipophilic balance (HLB) system were used in the development. The system was stable throughout 90 days of testing, as evidenced by turbidimetry analysis and measurements of the droplet size (57.3 nm) and polydispersity index (0.24). Fourier transform infrared spectroscopy and mass spectrometry evidenced drug's integrity in the formulation. An in vitro dissolution profile showed 75% of ursolic acid release after 5 min from the nanoemulsion into the alkaline dissolution medium, while only 20% could be released from a physical mixture after 2 h. Trypanocidal activity and cytotoxicity were evaluated on the CL Brener strain and LLC-MK2 (monkey kidney) fibroblast by chlorophenol red-β-D-galactoside (CPRG) method. Biological studies showed that the developed formulation was nontoxic and effective against replicant forms of the parasite. A stable and efficient nanoemulsion could be developed to improve the delivery of a promising drug to treat a threatening illness such as Chagas disease.
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Affiliation(s)
- Erika Cristina Vargas de Oliveira
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Avenida do Café s/n, 14040-903, Ribeirão Preto, São Paulo, Brazil.
- Department of Pharmaceutical Sciences, College of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Zeferino Vaz, s/n, Bairro Monte Alegre, 14040-903, Ribeirão Preto, SP, Brazil.
| | - Zumira Aparecida Carneiro
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Avenida do Café s/n, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Sérgio de Albuquerque
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Avenida do Café s/n, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Juliana Maldonado Marchetti
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Avenida do Café s/n, 14040-903, Ribeirão Preto, São Paulo, Brazil
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Ferreira LM, Sari MHM, Cervi VF, Gehrcke M, Barbieri AV, Zborowski VA, Beck RCR, Nogueira CW, Cruz L. Pomegranate seed oil nanoemulsions improve the photostability and in vivo antinociceptive effect of a non-steroidal anti-inflammatory drug. Colloids Surf B Biointerfaces 2016; 144:214-221. [DOI: 10.1016/j.colsurfb.2016.04.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/01/2016] [Accepted: 04/04/2016] [Indexed: 11/27/2022]
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16
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de Souza TD, Ziembowicz FI, Müller DF, Lauermann SC, Kloster CL, Santos RCV, Lopes LQS, Ourique AF, Machado G, Villetti MA. Evaluation of photodynamic activity, photostability and in vitro drug release of zinc phthalocyanine-loaded nanocapsules. Eur J Pharm Sci 2016; 83:88-98. [DOI: 10.1016/j.ejps.2015.12.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/25/2015] [Accepted: 12/04/2015] [Indexed: 01/09/2023]
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17
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Ye K, Zhao D, Shi X, Lu X. Use of caprylic/capric triglyceride in the encapsulation of dementholized peppermint fragrance leading to smaller and better distributed nanocapsules. RSC Adv 2016. [DOI: 10.1039/c6ra19003k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Physically stable dementholized peppermint (DP) nanocapsules with an average size of 82.8 nm and fragrance loading of 16% were prepared.
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Affiliation(s)
- Kai Ye
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- People's Republic of China
| | - Di Zhao
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- People's Republic of China
| | - Xiaodi Shi
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- People's Republic of China
| | - Xihua Lu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- People's Republic of China
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Singh N, Verma SM, Singh SK, Verma PRP. Evidence for bactericidal activities of lipidic nanoemulsions against Pseudomonas aeruginosa. Antonie Van Leeuwenhoek 2015; 107:1555-68. [PMID: 25860543 DOI: 10.1007/s10482-015-0449-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 04/04/2015] [Indexed: 11/29/2022]
Abstract
Pseudomonas aeruginosa has been implicated in a broad range of infections and shown to acquire rapid resistance to anti-microbial agents. In the present, study we have used particular amalgamation of specific lipids that hold innate antibacterial activities, which can be transformed into cationized and non-cationized nanoemulsions. The anti-Pseudomonas activities were then elucidated by transmission/scanning electron microscopy, and atomic force microscopy. The microscopic studies revealed the cell lysis due to the formation of blebs, exudation of essential cellular contents and loss of characteristics contour of the cells. The microscopic studies were then corroborated by zone of inhibition, cytoplasmic release studies, time dependent killing and MIC determination. Conclusively, it can be inferred that the delivery issues of antibiotics could be reassessed by using certain excipients that possess inherent antibacterial properties. This will not only avoid unnecessary introduction of inactive excipients in the body, but will also reduce the dose of antibiotics because of synergistic effects of excipients and drug acting together.
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Affiliation(s)
- Neeru Singh
- Division of Biomedical Lab Technology, University Polytechnic, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India,
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Herbal mouthwash containing extracts of Baccharis dracunculifolia as agent for the control of biofilm: clinical evaluation in humans. ScientificWorldJournal 2015; 2015:712683. [PMID: 25874255 PMCID: PMC4385682 DOI: 10.1155/2015/712683] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/14/2014] [Accepted: 10/27/2014] [Indexed: 11/23/2022] Open
Abstract
Baccharis dracunculifolia DC (Asteraceae), popularly known as “alecrim-do-campo,” is largely distributed in South America, is shown to exhibit protective actions against gastric ulcers, has anti-inflammatory properties, and is hepatoprotective. Several essential oils obtained from Baccharis species possess biological activities, such as antimicrobial and antivirus activities. This randomized controlled trial evaluated the efficacy of B. dracunculifolia in the reduction of dental biofilm, comparing this natural product with other mouthwashes already known in the dental market. In measuring the time after use of mouthwash (t = 1), there was no difference between products (P = 0.602); that is, subjects in the study had a similar PI after the first use. After one week (t = 2), there was no difference between the four products evaluated (P = 0.674), so, all research individuals completed the study with a similar reduction in dental biofilm between themselves but it was different from initial state (Friedman test). It is possible to conclude that B. dracunculifolia had the same efficiency of the materials used to oral hygiene in reduction of dental plaque and, consequently, prevention of dental caries. Thus, we can consider B. dracunculifolia as a good candidate for new material to be implemented in dental care.
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Li Y, Teng Z, Chen P, Song Y, Luo Y, Wang Q. Enhancement of aqueous stability of allyl isothiocyanate using nanoemulsions prepared by an emulsion inversion point method. J Colloid Interface Sci 2015; 438:130-137. [DOI: 10.1016/j.jcis.2014.09.055] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 09/18/2014] [Accepted: 09/20/2014] [Indexed: 02/07/2023]
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Kalhapure RS, Suleman N, Mocktar C, Seedat N, Govender T. Nanoengineered drug delivery systems for enhancing antibiotic therapy. J Pharm Sci 2014; 104:872-905. [PMID: 25546108 DOI: 10.1002/jps.24298] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/07/2014] [Accepted: 11/07/2014] [Indexed: 12/12/2022]
Abstract
Formulation scientists are recognizing nanoengineered drug delivery systems as an effective strategy to overcome limitations associated with antibiotic drug therapy. Antibiotics encapsulated into nanodelivery systems will contribute to improved management of patients with various infectious diseases and to overcoming the serious global burden of antibiotic resistance. An extensive review of several antibiotic-loaded nanocarriers that have been formulated to target drugs to infectious sites, achieve controlled drug release profiles, and address formulation challenges, such as low-drug entrapment efficiencies, poor solubility and stability is presented in this paper. The physicochemical properties and the in vitro/in vivo performances of various antibiotic-loaded delivery systems, such as polymeric nanoparticles, micelles, dendrimers, liposomes, solid lipid nanoparticles, lipid-polymer hybrid nanoparticles, nanohybirds, nanofibers/scaffolds, nanosheets, nanoplexes, and nanotubes/horn/rods and nanoemulsions, are highlighted and evaluated. Future studies that will be essential to optimize formulation and commercialization of these antibiotic-loaded nanosystems are also identified. The review presented emphasizes the significant formulation progress achieved and potential that novel nanoengineered antibiotic drug delivery systems have for enhancing the treatment of patients with a range of infections.
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Affiliation(s)
- Rahul S Kalhapure
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa
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22
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Cao X, Luo J, Gong T, Zhang ZR, Sun X, Fu Y. Coencapsulated doxorubicin and bromotetrandrine lipid nanoemulsions in reversing multidrug resistance in breast cancer in vitro and in vivo. Mol Pharm 2014; 12:274-86. [PMID: 25469833 DOI: 10.1021/mp500637b] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Multidrug resistance has remained a major cause of treatment failure in chemotherapy due to the presence of P-glycoproteins (P-gp) that actively pump drugs from inside the cell to the outside. P-gp inhibitors were developed and coadministered with chemotherapeutic drugs to overcome the effect of efflux pumps thus enhancing the chemosensitivity of therapeutics. Our study aimed at developing a lipid nanoemulsion system for the coencapsulation of doxorubicin (DOX) and bromotetrandrine (W198) to reverse multidrug resistance (MDR) in breast cancer. W198 was a potent P-gp inhibitor, and DOX was selected as a model compound which is a common substrate for P-gp. Coencapsulated DOX and W198 lipid nanoemulsions (DOX/W198-LNs) displayed significantly enhanced cytotoxicity in DOX-resistant human breast cancer cells (MCF-7/ADR) compared with DOX loaded lipid nanoemulsions (DOX-LNs) (p < 0.05), which is due to the enhanced intracellular uptake of DOX in MCF-7/ADR cells. The biodistribution study was performed using a nude mice xenograft model, which demonstrates enhanced tumor uptake of DOX in the DOX/W198-LN treated group. Compared with DOX solution, DOX/W198-LNs showed reduced cardiac toxicity and gastrointestinal injury in rats. Taken together, DOX/W198-LNs represent a promising formulation for overcoming MDR in breast cancer.
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Affiliation(s)
- Xi Cao
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, Sichuan University , Chengdu, Sichuan, People's Republic of China
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23
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Atashbeyk DG, Khameneh B, Tafaghodi M, Fazly Bazzaz BS. Eradication of methicillin-resistant Staphylococcus aureus infection by nanoliposomes loaded with gentamicin and oleic acid. PHARMACEUTICAL BIOLOGY 2014; 52:1423-1428. [PMID: 25026343 DOI: 10.3109/13880209.2014.895018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
CONTEXT Methicillin-resistant Staphylococcus aureus (MRSA) infection with its high incidence is responsible for nosocomial infections. MRSA strains resistant to multiple antibiotics have emerged increasingly. Recently, combination therapy and efficient drug delivery systems are developed to treat infections. OBJECTIVE The aim of the present study was to evaluate antibacterial activities of combination of oleic acid and gentamicin against MRSA, in both free and liposomal forms, and in comparison with vancomycin. MATERIALS AND METHODS The antibacterial activities against MRSA ATCC 43300 were assessed by the determination of minimum inhibitory concentration (MIC), MBC, and Fractional Inhibitory Concentration Index (FICI). The time-kill assays were performed to evaluate the potency of antibacterial agents. Nanoliposomal formulations of gentamicin, oleic acid, and combination of gentamicin with oleic acid were prepared by the dehydration-rehydration (DRV) method and characterized for size, zeta potential, and encapsulation efficiency. RESULTS MIC values of gentamicin and oleic acid were 19.5 and >250 µg/ml, respectively. Synergetic effects were observed by the gentamicin and oleic acid combination; FICI was 0.5. Following incorporation of gentamicin into liposomal gentamicin and liposomal combination, the MIC values were reduced 15- and 27-fold, respectively. In comparison with vancomycin, liposomal combination was more effective in bacterial inhibition and killing. Liposomal combination was the most effective formula in time-kill study. DISCUSSION AND CONCLUSION Liposomal formulation showed a higher antibacterial activity in comparison with the free forms and vancomycin. These carriers can improve antimicrobial activity as well as reducing the effective concentration required and inducing rapid bacterial clearance.
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Involvement of BDNF and NGF in the mechanism of neuroprotective effect of human recombinant erythropoietin nanoforms. Bull Exp Biol Med 2014; 155:242-4. [PMID: 24131000 DOI: 10.1007/s10517-013-2123-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Human recombinant erythropoietin adsorbed on poly(butyl)cyanoacrylate nanoparticles and administered intraperitoneally in a dose of 0.05 mg/kg exhibited a neuroprotective effect in experimental intracerebral posttraumatic hematomas (hemorrhagic stroke) and reduced animal mortality. Human recombinant erythropoietin, native and adsorbed on lactic and glycolic acid copolymer-based nanoparticles, exhibited no antistroke effect on this model. Analysis of reverse transcription PCR products showed that human recombinant erythropoietin adsorbed on poly(butyl)cyanoacrylate nanoparticles more than 2-fold increased the expression of BDNF and NGF neurotrophins in the rat brain frontal cortex and hippocampus.
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Zeng BJ, Chuan YP, O'Sullivan B, Caminschi I, Lahoud MH, Thomas R, Middelberg APJ. Receptor-specific delivery of protein antigen to dendritic cells by a nanoemulsion formed using top-down non-covalent click self-assembly. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3736-42. [PMID: 23606503 DOI: 10.1002/smll.201300078] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 03/12/2013] [Indexed: 05/23/2023]
Abstract
A new class of targeted and immune-evading nanocarrier made using only biological components and facile processes is assembled in a bottom-up fashion. Simple top-down sequential addition of immune-evading or receptor-specific antibody elements conjugated to biosurfactant protein DAMP4 promotes self-assembly at an interface previously formed in the presence of peptide surfactant AM1, leading to a functional display at the interface through non-covalent molecular self-assembly.
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Affiliation(s)
- B J Zeng
- The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, St Lucia QLD 4072, Australia
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26
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Paiva AM, Pinto RA, Teixeira M, Barbosa CM, Lima RT, Vasconcelos MH, Sousa E, Pinto M. Development of noncytotoxic PLGA nanoparticles to improve the effect of a new inhibitor of p53–MDM2 interaction. Int J Pharm 2013; 454:394-402. [DOI: 10.1016/j.ijpharm.2013.07.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/05/2013] [Accepted: 07/08/2013] [Indexed: 12/28/2022]
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27
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Rigo LA, Frescura V, Fiel L, Coradini K, Ourique AF, Emanuelli T, Quatrin A, Tedesco S, Silva CBD, Guterres SS, Pohlmann AR, Beck RCR. Influence of the type of vegetable oil on the drug release profile from lipid-core nanocapsules andin vivogenotoxicity study. Pharm Dev Technol 2013; 19:789-98. [DOI: 10.3109/10837450.2013.829097] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Eskandari S, Varamini P, Toth I. Formulation, characterization and permeability study of nano particles of lipo-endomorphin-1 for oral delivery. J Liposome Res 2013; 23:311-7. [DOI: 10.3109/08982104.2013.805339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Strategies for the design of orally bioavailable antileishmanial treatments. Int J Pharm 2013; 454:539-52. [PMID: 23871737 DOI: 10.1016/j.ijpharm.2013.07.035] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/08/2013] [Accepted: 07/10/2013] [Indexed: 12/21/2022]
Abstract
Leishmaniasis is one of the six major tropical diseases targeted by the World Health Organization. The most serious, life-threatening form is visceral leishmaniasis (VL). No vaccine is yet available for human use and chemotherapy is the main mean of dealing with this disease. This review focuses on the development of drug delivery systems (DDS) for treatment of leishmaniasis. After an overview of the significance of leishmaniasis in 2013, current chemotherapy and its limitations are considered, leading to possible strategies to improve the treatment of VL: new drugs, combinations of existing drugs and DDS, particularly for oral administration. Nanostructured biomaterials such as lipid-based or polymeric nanoparticles have unique physicochemical properties, ultra-small and controllable size, large surface area to mass ratio and the possibility of surface modification which can be used to advantage for the oral administration of antileishmanial drugs. They can improve the rate of dissolution of poorly water-soluble drugs, increase intestinal residence time by bioadhesion and, especially when lipid additives are used, influence the route and efficiency of absorption. These recent advances in this very active field should lead to better management of this serious disease.
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Synthesis of new nanocopolymer containing β-lactams. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0277-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Fontes GC, Calado VMA, Rossi AM, da Rocha-Leão MHM. Characterization of antibiotic-loaded alginate-OSA starch microbeads produced by ionotropic pregelation. BIOMED RESEARCH INTERNATIONAL 2013; 2013:472626. [PMID: 23862146 PMCID: PMC3686067 DOI: 10.1155/2013/472626] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 05/02/2013] [Indexed: 11/17/2022]
Abstract
The aim of this study was to characterize the penicillin-loaded microbeads composed of alginate and octenyl succinic anhydride (OSA) starch prepared by ionotropic pregelation with calcium chloride and to evaluate their in vitro drug delivery profile. The beads were characterized by size, scanning electron microscopy (SEM), zeta potential, swelling behavior, and degree of erosion. Also, the possible interaction between penicillin and biopolymers was investigated by differential scanning calorimetry (DSC), powder X-ray diffraction (XRD), and Fourier transform infrared (FTIR) analysis. The SEM micrograph results indicated a homogeneous drug distribution in the matrix. Also, based on thermal analyses (TGA/DSC), interactions were detected between microbead components. Although FTIR spectra of penicillin-loaded microbeads did not reveal the formation of new chemical entities, they confirmed the chemical drug stability. XRD patterns showed that the incorporated crystalline structure of penicillin did not significantly alter the primarily amorphous polymeric network. In addition, the results confirmed a prolonged penicillin delivery system profile. These results imply that alginate and OSA starch beads can be used as a suitable controlled-release carrier for penicillin.
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Affiliation(s)
- Gizele Cardoso Fontes
- Escola de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Guo Y, Liu X, Sun X, Zhang Q, Gong T, Zhang Z. Mannosylated lipid nano-emulsions loaded with lycorine-oleic acid ionic complex for tumor cell-specific delivery. Am J Cancer Res 2012; 2:1104-14. [PMID: 23227126 PMCID: PMC3516834 DOI: 10.7150/thno.4525] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 08/18/2012] [Indexed: 11/05/2022] Open
Abstract
This study was to prepare a mannosylated lycorine lipid nano-emulsion formulation (M-LYC-OA-LNEs) for the aim of achieving tumor targeting delivery of lycorine (LYC) . The low lipophilicity of LYC made it hard to be dispersed into lipid nano-emulsions (LNEs). In order to increase its lipophilicity, lycorine-oleic acid ionic complex (LYC-OA) was made. M-LYC-OA-LNEs and uncoated lycorine-oleic acid loaded lipid nano-emulsions (LYC-OA-LNEs) were prepared by solvent injection method and characterized by transmission electron microscopy (TEM), particle size, polydispersity index, zeta-potential and entrapment efficiency analysis. The in vitro cellular uptake and growth inhibition activity studies were performed on A549 cell lines. The entrapment efficiency of M-LYC-OA-LNEs was 82.7 ± 1.6 %. The cellular uptake study showed that coated LNEs were preferably taken up by A549 cells than uncoated LNEs. The effective test by MTT assay showed better growth inhibition activity of M-LYC-OA-LNEs on A549 cell lines when compared with LYC-OA-LNEs and blank LNEs. These results demonstrated that M-LYC-OA-LNEs could be a promising formulation for tumor targeting delivery of LYC with the potential of being applied in the diagnosis and treatment of cancer.
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33
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In Situ Incorporation of Doxorubicin in Copolymer Particles During Suspension Polymerization. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/masy.201100249] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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De Holanda E Silva KG, Barratt G, De Oliveira AG, Do Egito EST. Trends in rheumatic fever: clinical aspects and perspectives in prophylactic treatments. Expert Opin Drug Deliv 2012; 9:1099-110. [DOI: 10.1517/17425247.2012.702104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kuntworbe N, Martini N, Shaw J, Al-Kassas R. Malaria Intervention Policies and Pharmaceutical Nanotechnology as a Potential Tool for Malaria Management. Drug Dev Res 2012. [DOI: 10.1002/ddr.21010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Noble Kuntworbe
- School of Pharmacy; Faculty of Medical and Health Sciences; The University of Auckland; Auckland; New Zealand
| | - Nataly Martini
- School of Pharmacy; Faculty of Medical and Health Sciences; The University of Auckland; Auckland; New Zealand
| | - John Shaw
- School of Pharmacy; Faculty of Medical and Health Sciences; The University of Auckland; Auckland; New Zealand
| | - Raida Al-Kassas
- School of Pharmacy; Faculty of Medical and Health Sciences; The University of Auckland; Auckland; New Zealand
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36
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Gibaud S, Attivi D. Microemulsions for oral administration and their therapeutic applications. Expert Opin Drug Deliv 2012; 9:937-51. [DOI: 10.1517/17425247.2012.694865] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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37
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Sundar S, Prajapati VK. Drug targeting to infectious diseases by nanoparticles surface functionalized with special biomolecules. Curr Med Chem 2012; 19:3196-202. [PMID: 22612703 PMCID: PMC3384774 DOI: 10.2174/092986712800784630] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 12/31/2011] [Accepted: 01/20/2012] [Indexed: 12/26/2022]
Abstract
The potential to deliver nanoparticles directly into the targeted cells is important in the therapeutic applications for infectious diseases. The possibility of therapeutic agent being attached to the nanoparticles by chemical modification has provided a novel drug delivery option. Interestingly, the discovery of carbon nanotubes and graphene has given an excellent imaging and therapeutic agent for the biomedical applications. In spite of continuous advancement in pharmaceutical drug delivery viz. micelles, vesicles, liquid crystals, etc., during the past decades, their prohibitive production has limited their use. Nanomaterials with their properties of biodegradation, equal biodistribution, mass production, and long time storage make them attractive alternatives for future biomedical applications. Nanoparticles surface functionalized with specific biomolecules based drug delivery has driven new direction for modulating the pharmacokinetics, pharmacodynamics, biorecognition, and increasing the efficacy of targeted drugs. These new strategies are likely to minimize drug degradation and loss, increase drug availability, and opens up new vistas for drug delivery.
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Affiliation(s)
- Shyam Sundar
- Infectious Disease Research Laboratory, Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, India.
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Songkro S, Pichayakorn W, Sungkarak S, Wungsintaweekul J. Investigation of plaunoi-loaded micro/nanoemulsions for the treatment of dermatitis: formulation, évaluation and skin irritation studies. J Drug Deliv Sci Technol 2011. [DOI: 10.1016/s1773-2247(11)50065-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Varshosaz J, Eskandari S, Tabakhian M. Production and optimization of valproic acid nanostructured lipid carriers by the Taguchi design. Pharm Dev Technol 2010; 15:89-96. [DOI: 10.3109/10837450903013568] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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40
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Effects of surfactants on the physical properties of capsicum oleoresin-loaded nanocapsules formulated through the emulsion–diffusion method. Food Res Int 2010. [DOI: 10.1016/j.foodres.2009.07.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Mora-Huertas C, Fessi H, Elaissari A. Polymer-based nanocapsules for drug delivery. Int J Pharm 2010; 385:113-42. [DOI: 10.1016/j.ijpharm.2009.10.018] [Citation(s) in RCA: 994] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 10/01/2009] [Accepted: 10/03/2009] [Indexed: 10/20/2022]
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Zhou H, Yue Y, Liu G, Li Y, Zhang J, Gong Q, Yan Z, Duan M. Preparation and characterization of a lecithin nanoemulsion as a topical delivery system. NANOSCALE RESEARCH LETTERS 2009; 5:224-30. [PMID: 20652152 PMCID: PMC2894193 DOI: 10.1007/s11671-009-9469-5] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Accepted: 10/14/2009] [Indexed: 05/29/2023]
Abstract
Purpose of this study was to establish a lecithin nanoemulsion (LNE) without any synthetic surfactant as a topical delivery vehicle and to evaluate its topical delivery potential by the following factors: particle size, morphology, viscosity, stability, skin hydration and skin penetration. Experimental results demonstrated that an increasing concentration of soybean lecithin and glycerol resulted in a smaller size LNE droplet and increasing viscosity, respectively. The droplet size of optimized LNE, with the glycerol concentration above 75% (w/w), changed from 92 (F10) to 58 nm (F14). Additionally, LNE, incorporated into o/w cream, improved the skin hydration capacity of the cream significantly with about 2.5-fold increase when the concentration of LNE reached 10%. LNE was also demonstrated to improve the penetrability of Nile red (NR) dye into the dermis layer, when an o/w cream, incorporated with NR-loaded LNE, applied on the abdominal skin of rat in vivo. Specifically, the arbitrary unit (ABU) of fluorescence in the dermis layer that had received the cream with a NR-loaded LNE was about 9.9-fold higher than the cream with a NR-loaded general emulsion (GE). These observations suggest that LNE could be used as a promising topical delivery vehicle for lipophilic compounds.
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Affiliation(s)
- Huafeng Zhou
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
- Jiangsu Longliqi Bioscience Co., Ltd., 215555, Suzhou, China
| | - Yang Yue
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Guanlan Liu
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Yan Li
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Jing Zhang
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Qiu Gong
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Zemin Yan
- Jiangsu Longliqi Bioscience Co., Ltd., 215555, Suzhou, China
| | - Mingxing Duan
- State-Key Laboratory of Biomembrane and Membrane, Biotechnology, School of Life Sciences, Tsinghua University, 100084, Beijing, China
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Silva KGH, Júnior FHX, Farias IEG, Silva AKA, Neto JAC, Souza LCA, Santiago RR, Júnior FA, Júnior TN, Soares LAL, Santos-Magalhães NS, Egito EST. Stationary cuvette: a new approach to obtaining analytical curves by UV-VIS spectrophotometry. PHYTOCHEMICAL ANALYSIS : PCA 2009; 20:265-271. [PMID: 19333915 DOI: 10.1002/pca.1122] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND Investigations in the field of pharmaceutical analysis and quality control of medicines require analytical procedures that achieve suitable performance. An analytical curve is one of the most important steps in the chemical analysis presenting a direct relationship to features such as linearity. OBJECTIVE This study has the aim of developing a new methodology, the stationary cuvette, to derive analytical curves by spectroscopy for drug analysis. METHODOLOGY The method consists basically of the use of a cuvette with a path length of 10 cm, containing a constant volume of solvent in which increasing amounts of a stock solution of the sample are added, droplet by droplet. After each addition, the cuvette is stirred and the absorbance is measured. This procedure was compared with the currently used methodology, which requires a labour-intensive dilution process, and possible sources of variation between them were evaluated. RESULTS The results demonstrated that the proposed technique presented high sensitivity and similar reproducibility compared with the conventional methodology. In addition, a number of advantages were observed, such as user-friendliness, cost-effectiveness, accuracy, precision and robustness. CONCLUSION The stationary cuvette approach may be considered to be an appropriate alternative to derive analytical curves for analysing drug content in raw materials and medicines through UV-VIS spectrophotometry.
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Affiliation(s)
- K G H Silva
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal-RN, Brazil
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Malzert-Fréon A, Schönhammer K, Benoît JP, Boury F. Interactions between poly(ethylene glycol) and protein in dichloromethane/water emulsions. 2. Conditions required to obtain spontaneous emulsification allowing the formation of bioresorbable poly(D,L lactic acid) microparticles. Eur J Pharm Biopharm 2009; 73:66-73. [PMID: 19427379 DOI: 10.1016/j.ejpb.2009.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 04/28/2009] [Accepted: 04/30/2009] [Indexed: 10/20/2022]
Abstract
From microscopic observations, it was established that an oil-in-water emulsion with droplets of a size in the micrometer range can spontaneously form at room temperature without additional external stirring as soon as a solvent that is only partly miscible to water-like dichloromethane (DCM) is put in contact with an aqueous mixture of polyethylene glycol (PEG) and a protein. Experimental results show that emulsification only occurs if the system simultaneously includes PEG with middle chain, an organic solvent partly miscible to water and for which PEG affinity is sufficiently high, and a protein. From adsorption kinetics, it appears that this spontaneous emulsification process is related to the rapid diffusion of DCM towards water through the formation of interfacial turbulences, once the accumulation of PEG close to the DCM/water interface occurs. The oil droplets formed would be then stabilized by adsorbed protein molecules. Since the presence of polylactic acid in the organic phase did not prevent the emulsion formation, we studied the feasibility of formulating microparticles using this polymer. From results, it appears that microcapsules with a polymeric shell, with a homogeneous size of about 50 microm and able to encapsulate a model hydrophobic drug, such as amiodarone, can be obtained by using this spontaneous emulsification method.
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Affiliation(s)
- Aurélie Malzert-Fréon
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, UPRES EA 4258, UFR des Sciences Pharmaceutiques, Université de Caen Basse-Normandie, Bd Becquerel, 14032 Caen, France.
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45
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Abeylath SC, Turos E. Drug delivery approaches to overcome bacterial resistance to β-lactam antibiotics. Expert Opin Drug Deliv 2008; 5:931-49. [DOI: 10.1517/17425247.5.9.931] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sampath C Abeylath
- University of South Florida, Center for Molecular Diversity in Drug Design, Discovery, and Delivery, Department of Chemistry, CHE 205, 4202 East Fowler Avenue, Tampa, FL 33620, USA ;
| | - Edward Turos
- University of South Florida, Center for Molecular Diversity in Drug Design, Discovery, and Delivery, Department of Chemistry, CHE 205, 4202 East Fowler Avenue, Tampa, FL 33620, USA ;
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46
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Singh KK, Vingkar SK. Formulation, antimalarial activity and biodistribution of oral lipid nanoemulsion of primaquine. Int J Pharm 2008; 347:136-43. [PMID: 17709216 DOI: 10.1016/j.ijpharm.2007.06.035] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Revised: 06/20/2007] [Accepted: 06/20/2007] [Indexed: 11/19/2022]
Abstract
Primaquine (PQ) is one of the most widely used antimalarial and is the only available drug till date to combat relapsing form of malaria especially in case of Plasmodium vivax and Plasmodium ovale. Primaquine acts specifically on the pre-erythrocytic schizonts which are concentrated predominantly in the liver and causes relapse after multiplication. However application of PQ in higher doses is limited by severe tissue toxicity including hematological and GI related side effects which are needed to be minimized. Lipid nanoemulsion has been widely explored for parenteral delivery of drugs. Primaquine when incorporated into oral lipid nanoemulsion having particle size in the range of 10-200 nm showed effective antimalarial activity against Plasmodium bergheii infection in swiss albino mice at a 25% lower dose level as compared to conventional oral dose. Lipid nanoemulsion of primaquine exhibited improved oral bioavailability and was taken up preferentially by the liver with drug concentration higher at least by 45% as compared with the plain drug.
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Affiliation(s)
- Kamalinder K Singh
- C.U. Shah College of Pharmacy, S.N.D.T. Women's University, Santacruz (W), Mumbai 400049, India.
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47
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Turos E, Reddy GSK, Greenhalgh K, Ramaraju P, Abeylath SC, Jang S, Dickey S, Lim DV. Penicillin-bound polyacrylate nanoparticles: restoring the activity of beta-lactam antibiotics against MRSA. Bioorg Med Chem Lett 2007; 17:3468-72. [PMID: 17420125 PMCID: PMC1992523 DOI: 10.1016/j.bmcl.2007.03.077] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Revised: 03/22/2007] [Accepted: 03/23/2007] [Indexed: 12/22/2022]
Abstract
This report describes the preparation of antibacterially active emulsified polyacrylate nanoparticles in which a penicillin antibiotic is covalently conjugated onto the polymeric framework. These nanoparticles were prepared in water by emulsion polymerization of an acrylated penicillin analogue pre-dissolved in a 7:3 (w:w) mixture of butyl acrylate and styrene in the presence of sodium dodecyl sulfate (surfactant) and potassium persulfate (radical initiator). Dynamic light scattering analysis and atomic force microscopy images show that the emulsions contain nanoparticles of approximately 40 nm in diameter. The nanoparticles have equipotent in vitro antibacterial properties against methicillin-susceptible and methicillin-resistant forms of Staphylococcus aureus and indefinite stability toward beta-lactamase.
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Affiliation(s)
- Edward Turos
- Center for Molecular Diversity in Drug Design, Discovery, and Delivery, Department of Chemistry, 4202 East Fowler Avenue, CHE 207, University of South Florida, Tampa, FL 33620, USA.
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48
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Turos E, Shim JY, Wang Y, Greenhalgh K, Reddy GSK, Dickey S, Lim DV. Antibiotic-conjugated polyacrylate nanoparticles: new opportunities for development of anti-MRSA agents. Bioorg Med Chem Lett 2007; 17:53-6. [PMID: 17049850 PMCID: PMC1798659 DOI: 10.1016/j.bmcl.2006.09.098] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2006] [Revised: 09/29/2006] [Accepted: 09/29/2006] [Indexed: 11/26/2022]
Abstract
This report describes the preparation of polyacrylate nanoparticles in which an N-thiolated beta-lactam antibiotic is covalently conjugated onto the polymer framework. These nanoparticles are formed in water by emulsion polymerization of an acrylated antibiotic pre-dissolved in a liquid acrylate monomer (or mixture of co-monomers) in the presence of sodium dodecyl sulfate as a surfactant and potassium persulfate as a radical initiator. Dynamic light scattering analysis and electron microscopy images of these emulsions show that the nanoparticles are approximately 40 nm in diameter. The emulsions have potent in vitro antibacterial properties against methicillin-resistant Staphylococcus aureus and have improved bioactivity relative to the non-polymerized form of the antibiotic. A unique feature of this methodology is the ability to incorporate water-insoluble drugs directly into the nanoparticle framework without the need for post-synthetic modification. Additionally, the antibiotic properties of the nanoparticles can be modulated by changing the length or location of the acrylate linker on the drug monomer.
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Affiliation(s)
- Edward Turos
- Department of Chemistry, 4202 East Fowler Avenue, CHE 207, University of South Florida, Tampa, FL 33620, USA.
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49
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Ballot S, Noiret N, Hindré F, Denizot B, Garin E, Rajerison H, Benoit JP. 99mTc/188Re-labelled lipid nanocapsules as promising radiotracers for imaging and therapy: formulation and biodistribution. Eur J Nucl Med Mol Imaging 2006; 33:602-7. [PMID: 16450136 DOI: 10.1007/s00259-005-0007-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2005] [Accepted: 09/25/2005] [Indexed: 10/25/2022]
Abstract
PURPOSE This study focuses on a promising carrier system for imaging and therapeutic purposes using lipid nanocapsules. To assess their potential for clinical use, we labelled nanocapsules with (99m)Tc and (188)Re and analysed some kinetic biodistribution parameters after intravenous injection in rats. METHODS Lipophilic complexes [(99m)Tc/(188)Re(S(3)CPh)(2)(S(2)CPh)] ((99m)Tc/(188)Re-SSS) were encapsulated within the nanoparticles during their manufacture with quantitative yield and satisfactory radiochemical purity. Rats were injected intravenously with 3.7 MBq (99m)Tc/(188)Re-labelled nanocapsules and sacrificed at 5, 15 and 30 min and 1, 2, 4, 8, 12, 16, 20 and 24 h. RESULTS Dynamic scintigraphic acquisitions showed predominant hepatic uptake, and ex vivo counting indicated a long circulation time of labelled nanocapsules, with a half-life of 21+/-1 min for (99m)Tc and 22+/-2 min for (188)Re. Very weak urinary elimination was observed, indicating good stability of (99m)Tc and (188)Re labelling. CONCLUSION (99m)Tc/(188)Re-SSS nanocapsules can be obtained with high yield and satisfactory radiochemical purity. The biodistributions of (99m)Tc/(188)Re-labelled nanocapsules are close to those of classical PEG-coated particles and show good stability of (188)Re/(99m)Tc-SSS labelling.
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Affiliation(s)
- Sandrine Ballot
- Ecole Nationale Supérieure de Chimie de Rennes UMR CNRS 6052 'Synthèses et Activations de Biomolécules', Institut de Chimie de Rennes, Avenue du Général Leclerc, 35700, Rennes-Beaulieu, France
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Koo OM, Rubinstein I, Onyuksel H. Role of nanotechnology in targeted drug delivery and imaging: a concise review. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2005; 1:193-212. [PMID: 17292079 DOI: 10.1016/j.nano.2005.06.004] [Citation(s) in RCA: 379] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2005] [Accepted: 06/28/2005] [Indexed: 01/02/2023]
Abstract
The use of nanotechnology in drug delivery and imaging in vivo is a rapidly expanding field. The emphases of this review are on biophysical attributes of the drug delivery and imaging platforms as well as the biological aspects that enable targeting of these platforms to injured and diseased tissues and cells. The principles of passive and active targeting of nanosized carriers to inflamed and cancerous tissues with increased vascular leakiness, overexpression of specific epitopes, and cellular uptake of these nanoscale systems are discussed. Preparation methods-properties of nanoscale systems including liposomes, micelles, emulsions, nanoparticulates, and dendrimer nanocomposites, and clinical indications are outlined separately for drug delivery and imaging in vivo. Taken together, these relatively new and exciting data indicate that the future of nanomedicine is very promising, and that additional preclinical and clinical studies in relevant animal models and disease states, as well as long-term toxicity studies, should be conducted beyond the "proof-of-concept" stage. Large-scale manufacturing and costs of nanomedicines are also important issues to be addressed during development for clinical indications.
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Affiliation(s)
- Otilia M Koo
- Department of Biopharmaceutical Sciences, University of Illinois, Chicago, Illinois 60612-7231, USA
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