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Modulating Inflammation-Mediated Diseases via Natural Phenolic Compounds Loaded in Nanocarrier Systems. Pharmaceutics 2023; 15:pharmaceutics15020699. [PMID: 36840021 PMCID: PMC9964760 DOI: 10.3390/pharmaceutics15020699] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
The global increase and prevalence of inflammatory-mediated diseases have been a great menace to human welfare. Several works have demonstrated the anti-inflammatory potentials of natural polyphenolic compounds, including flavonoid derivatives (EGCG, rutin, apigenin, naringenin) and phenolic acids (GA, CA, etc.), among others (resveratrol, curcumin, etc.). In order to improve the stability and bioavailability of these natural polyphenolic compounds, their recent loading applications in both organic (liposomes, micelles, dendrimers, etc.) and inorganic (mesoporous silica, heavy metals, etc.) nanocarrier technologies are being employed. A great number of studies have highlighted that, apart from improving their stability and bioavailability, nanocarrier systems also enhance their target delivery, while reducing drug toxicity and adverse effects. This review article, therefore, covers the recent advances in the drug delivery of anti-inflammatory agents loaded with natural polyphenolics by the application of both organic and inorganic nanocarriers. Even though nanocarrier technology offers a variety of possible anti-inflammatory advantages to naturally occurring polyphenols, the complexes' inherent properties and mechanisms of action have not yet been fully investigated. Thus, expanding the quest on novel natural polyphenolic-loaded delivery systems, together with the optimization of complexes' activity toward inflammation, will be a new direction of future efforts.
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Afzal O, Altamimi ASA, Nadeem MS, Alzarea SI, Almalki WH, Tariq A, Mubeen B, Murtaza BN, Iftikhar S, Riaz N, Kazmi I. Nanoparticles in Drug Delivery: From History to Therapeutic Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4494. [PMID: 36558344 PMCID: PMC9781272 DOI: 10.3390/nano12244494] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/04/2022] [Accepted: 12/14/2022] [Indexed: 05/25/2023]
Abstract
Current research into the role of engineered nanoparticles in drug delivery systems (DDSs) for medical purposes has developed numerous fascinating nanocarriers. This paper reviews the various conventionally used and current used carriage system to deliver drugs. Due to numerous drawbacks of conventional DDSs, nanocarriers have gained immense interest. Nanocarriers like polymeric nanoparticles, mesoporous nanoparticles, nanomaterials, carbon nanotubes, dendrimers, liposomes, metallic nanoparticles, nanomedicine, and engineered nanomaterials are used as carriage systems for targeted delivery at specific sites of affected areas in the body. Nanomedicine has rapidly grown to treat certain diseases like brain cancer, lung cancer, breast cancer, cardiovascular diseases, and many others. These nanomedicines can improve drug bioavailability and drug absorption time, reduce release time, eliminate drug aggregation, and enhance drug solubility in the blood. Nanomedicine has introduced a new era for drug carriage by refining the therapeutic directories of the energetic pharmaceutical elements engineered within nanoparticles. In this context, the vital information on engineered nanoparticles was reviewed and conferred towards the role in drug carriage systems to treat many ailments. All these nanocarriers were tested in vitro and in vivo. In the coming years, nanomedicines can improve human health more effectively by adding more advanced techniques into the drug delivery system.
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Affiliation(s)
- Obaid Afzal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Abdulmalik S A Altamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Muhammad Shahid Nadeem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Aqsa Tariq
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Lahore 54000, Pakistan
| | - Bismillah Mubeen
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Lahore 54000, Pakistan
| | - Bibi Nazia Murtaza
- Department of Zoology, Abbottabad University of Science and Technology (AUST), Abbottabad 22310, Pakistan
| | - Saima Iftikhar
- School of Biological Sciences, University of Punjab, Lahore 54000, Pakistan
| | - Naeem Riaz
- Department of Pharmacy, COMSATS University, Abbottabad 22020, Pakistan
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Tavares GD, Gonçalves JE, Monteiro LM, Löbenberg R, Storpirtis S, Bou-Chacra NA, Consiglieri VO. N,N,N-trimethylchitosan-poly (n-butylcyanoacrylate) core-shell nanoparticles as a potential oral delivery system for acyclovir. Colloids Surf B Biointerfaces 2020; 196:111336. [PMID: 32877830 DOI: 10.1016/j.colsurfb.2020.111336] [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] [Received: 06/06/2020] [Revised: 08/11/2020] [Accepted: 08/16/2020] [Indexed: 10/23/2022]
Abstract
This study investigated the feasibility of polysaccharide-coated poly(n-butyl cyanoacrylate) (PBCA) nanoparticles for oral delivery of acyclovir (ACV). PBCA nanoparticles were obtained by the emulsion polymerization method. Chitosan was chemically modified to obtain N,N,N-trimethylchitosan (TMC), which was used to coat the nanoparticles (PBCA-TMC). Nanoparticles were characterized by dynamic light scattering, zeta potential, differential scanning calorimetry (DSC), atomic force microscopy (AFM), cytotoxicity, and the effect on the transepithelial electrical resistance (TEER) of the Caco-2 cells. The size of the coated nanoparticles (296.2 nm) was significantly larger than uncoated (175.0 nm). Furthermore, PBCA nanoparticles had a negative charge (-11.7 mV), which was inverted to highly positive values (+36.5 mV) after coating. DSC analysis suggested the occurrence of the coating, which was confirmed by AFM images. The MTT assay revealed concentration-dependent cytotoxicity for the core-shell nanoparticles. Additionally, PBCA-TMC caused a significant but reversible decrease in the Caco-2 cell monolayer TEER. Entrapped ACV (PBCA-ACV-TMC), a Biopharmaceutical Classification System class III drug substance, increased approximately 3.25 times the Papp of ACV in the Caco-2 permeability assay. The nanoparticles were also able to provide in vitro ACV controlled release using media with different pH values (1.2; 6.8; 7.4). Accordingly, this new core-shell nanoparticle showed the potential to improve the oral delivery of ACV.
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Affiliation(s)
- Guilherme Diniz Tavares
- Department of Pharmaceutical Science, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - José Eduardo Gonçalves
- Department of Pharmaceutical Products, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lis Marie Monteiro
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Raimar Löbenberg
- Faculty of Pharmacy, University of Alberta, Edmonton, Alberta, Canada
| | - Silvia Storpirtis
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Nádia Araci Bou-Chacra
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil.
| | - Vladi Olga Consiglieri
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
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Souza Ribeiro Costa J, Medeiros M, Yamashiro-Kanashiro EH, Rocha MC, Cotrim PC, Stephano MA, Lancellotti M, Tavares GD, Oliveira-Nascimento L. Biodegradable nanocarriers coated with polymyxin B: Evaluation of leishmanicidal and antibacterial potential. PLoS Negl Trop Dis 2019; 13:e0007388. [PMID: 31042710 PMCID: PMC6513107 DOI: 10.1371/journal.pntd.0007388] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 05/13/2019] [Accepted: 04/13/2019] [Indexed: 11/18/2022] Open
Abstract
Most treatments of leishmaniasis require hospitalization and present side effects or parasite resistance; innovations in drug formulation/reposition can overcome these barriers and must be pursued to increase therapeutic alternatives. Therefore, we tested polymyxin B (polB) potential to kill Leishmania amazonensis, adsorbed or not in PBCA nanoparticles (PBCAnp), which could augment polB internalization in infected macrophages. PBCAnps were fabricated by anionic polymerization and analyzed by Dynamic Light Scattering (size, ζ potential), Nanoparticle Tracking Analysis (size/concentration), vertical diffusion cell (release rate), drug incorporation (indirect method, protein determination) and in vitro cell viability. Nanoparticles coated with polB (PBCAnp-polB) presented an adequate size of 261.5 ± 25.9 nm, low PDI and ζ of 1.79 ± 0.17 mV (stable for 45 days, at least). The 50% drug release from PBCAnp-polB was 6-7 times slower than the free polB, which favors a prolonged and desired release profile. Concerning in vitro evaluations, polB alone reduced in vitro amastigote infection of macrophages (10 μg/mL) without complete parasite elimination, even at higher concentrations. This behavior limits its future application to adjuvant leishmanicidal therapy or antimicrobial coating of carriers. The nanocarrier PBCAnp also presented leishmanicidal effect and surpassed polB activity; however, no antimicrobial activity was detected. PolB maintained its activity against E. coli, Pseudomonas and Klebsiella, adding antimicrobial properties to the nanoparticles. Thus, this coated drug delivery system, described for the first time, demonstrated antileishmanial and antimicrobial properties. The bactericidal feature helps with concomitant prevention/treatment of secondary infections that worst ulcers induced by cutaneous L. amazonensis, ultimately ending in disfiguring or disabling lesions.
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Affiliation(s)
- Juliana Souza Ribeiro Costa
- Department of Biochemistry and Tissue Biology, Biology Institute, University of Campinas, Campinas, São Paulo, Brazil
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Marília Medeiros
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Mussya Cisotto Rocha
- Tropical Medicine Institute, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Paulo Cesar Cotrim
- Tropical Medicine Institute, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Marco Antonio Stephano
- School of Pharmaceutical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Marcelo Lancellotti
- Department of Biochemistry and Tissue Biology, Biology Institute, University of Campinas, Campinas, São Paulo, Brazil
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Laura Oliveira-Nascimento
- Department of Biochemistry and Tissue Biology, Biology Institute, University of Campinas, Campinas, São Paulo, Brazil
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo, Brazil
- * E-mail:
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Vauthier C. A journey through the emergence of nanomedicines with poly(alkylcyanoacrylate) based nanoparticles. J Drug Target 2019; 27:502-524. [PMID: 30889991 DOI: 10.1080/1061186x.2019.1588280] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Starting in the late 1970s, the pioneering work of Patrick Couvreur gave birth to the first biodegradable nanoparticles composed of a biodegradable synthetic polymer. These nanoparticles, made of poly(alkylcyanoacrylate) (PACA), were the first synthetic polymer-based nanoparticulate drug carriers undergoing a phase III clinical trial so far. Analyzing the journey from the birth of PACA nanoparticles to their clinical evaluation, this paper highlights their remarkable adaptability to bypass various drug delivery challenges found on the way. At present, PACA nanoparticles include a wide range of nanoparticles that can associate drugs of different chemical nature and can be administered in vivo by different routes. The most recent technologies giving the nanoparticles customised functions could also be implemented on this family of nanoparticles. Through different examples, this paper discusses the seminal role of the PACA nanoparticles' family in the development of nanomedicines.
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Affiliation(s)
- Christine Vauthier
- a Institut Galien Paris Sud, UMR CNRS 8612 , Université Paris-Sud , Chatenay-Malabry Cedex , France
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6
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Obinu A, Rassu G, Corona P, Maestri M, Riva F, Miele D, Giunchedi P, Gavini E. Poly (ethyl 2-cyanoacrylate) nanoparticles (PECA-NPs) as possible agents in tumor treatment. Colloids Surf B Biointerfaces 2019; 177:520-528. [PMID: 30822627 DOI: 10.1016/j.colsurfb.2019.02.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/29/2019] [Accepted: 02/19/2019] [Indexed: 01/04/2023]
Abstract
Tumor eradication has many challenges due to the difficulty of selectively delivering anticancer drugs to malignant cells avoiding contact with healthy tissues/organs. The improvement of antitumor efficacy and the reduction of systemic side effects can be achieved using drug loaded nanoparticles. In this study, poly (ethyl 2-cyanoacrylate) nanoparticles (PECA-NPs) were prepared using an emulsion polymerization method and their potential for cancer treatment was investigated. The size, polydispersity index and zeta potential of prepared nanoparticles are about 80 nm, 0.08 and -39.7 mV, respectively. The stability test shows that the formulation is stable for 15 days, while an increase in particle size occurs after 30 days. TEM reveals the spherical morphology of nanoparticles; furthermore, FTIR and 1H NMR analyses confirm the structure of PECA-NPs and the complete polymerization. The nanoparticles demonstrate an in vitro concentration-dependent cytotoxicity against human epithelial colorectal adenocarcinoma cell lines (Caco-2), as assessed by MTT assay. The anticancer activity of PECA-NPs was studied on 3D tumor spheroids models of hepatocellular carcinoma (HepG2) and kidney adenocarcinoma cells (A498) to better understand how the nanoparticles could interact with a complex structure such as a tumor. The results confirm the antitumor activity of PECA-NPs. Therefore, these systems can be considered good candidates in tumor treatment.
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Affiliation(s)
- Antonella Obinu
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| | - Giovanna Rassu
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Paola Corona
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Marcello Maestri
- IRCCS Policlinico San Matteo Foundation and Department of Clinical-Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
| | - Federica Riva
- Department of Public Health, Experimental and Forensic Medicine-Histology and Embryology Unit, University of Pavia, Pavia, Italy
| | - Dalila Miele
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Paolo Giunchedi
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy.
| | - Elisabetta Gavini
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy.
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Choi J, Kim SY. Synthesis and Characterization of Photosensitizer-conjugated Gold Nanorods for Photodynamic/Photothermal Therapy. APPLIED CHEMISTRY FOR ENGINEERING 2016. [DOI: 10.14478/ace.2016.1089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Tang H, Tsarevsky NV. Preparation and functionalization of linear and reductively degradable highly branched cyanoacrylate-based polymers. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28261] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Houliang Tang
- Department of Chemistry and Center for Drug Discovery, Design, and Delivery at Dedman College; Southern Methodist University; 3215 Daniel Avenue Dallas Texas 75275
| | - Nicolay V. Tsarevsky
- Department of Chemistry and Center for Drug Discovery, Design, and Delivery at Dedman College; Southern Methodist University; 3215 Daniel Avenue Dallas Texas 75275
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9
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Yamaoka T, Tabata Y, Ikada Y. Blood Clearance and Organ Distribution of Intravenously Administered Polystyrene Microspheres of Different Sizes. J BIOACT COMPAT POL 2016. [DOI: 10.1177/088391159300800302] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Tetsuji Yamaoka
- Research Center for Biomedical Engineering Kyoto University 53 Kawahara-cho Shogoin Sakyo-ku, Kyoto 606, Japan
| | - Yasuhiko Tabata
- Research Center for Biomedical Engineering Kyoto University 53 Kawahara-cho Shogoin Sakyo-ku, Kyoto 606, Japan
| | - Yoshito Ikada
- Research Center for Biomedical Engineering Kyoto University 53 Kawahara-cho Shogoin Sakyo-ku, Kyoto 606, Japan
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10
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Santos GCM, Tiago M, Maria-Engler SS, Pinto TDJA. Three-Dimensional Systems in Polybutylcyanoacrylate Nanoparticles Safety Evaluation. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2014.1002097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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11
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Kapse-Mistry S, Govender T, Srivastava R, Yergeri M. Nanodrug delivery in reversing multidrug resistance in cancer cells. Front Pharmacol 2014; 5:159. [PMID: 25071577 PMCID: PMC4090910 DOI: 10.3389/fphar.2014.00159] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 06/19/2014] [Indexed: 12/25/2022] Open
Abstract
Different mechanisms in cancer cells become resistant to one or more chemotherapeutics is known as multidrug resistance (MDR) which hinders chemotherapy efficacy. Potential factors for MDR includes enhanced drug detoxification, decreased drug uptake, increased intracellular nucleophiles levels, enhanced repair of drug induced DNA damage, overexpression of drug transporter such as P-glycoprotein(P-gp), multidrug resistance-associated proteins (MRP1, MRP2), and breast cancer resistance protein (BCRP). Currently nanoassemblies such as polymeric/solid lipid/inorganic/metal nanoparticles, quantum dots, dendrimers, liposomes, micelles has emerged as an innovative, effective, and promising platforms for treatment of drug resistant cancer cells. Nanocarriers have potential to improve drug therapeutic index, ability for multifunctionality, divert ABC-transporter mediated drug efflux mechanism and selective targeting to tumor cells, cancer stem cells, tumor initiating cells, or cancer microenvironment. Selective nanocarrier targeting to tumor overcomes dose-limiting side effects, lack of selectivity, tissue toxicity, limited drug access to tumor tissues, high drug doses, and emergence of multiple drug resistance with conventional or combination chemotherapy. Current review highlights various nanodrug delivery systems to overcome mechanism of MDR by neutralizing, evading, or exploiting the drug efflux pumps and those independent of drug efflux pump mechanism by silencing Bcl-2 and HIF1α gene expressions by siRNA and miRNA, modulating ceramide levels and targeting NF-κB. “Theragnostics” combining a cytotoxic agent, targeting moiety, chemosensitizing agent, and diagnostic imaging aid are highlighted as effective and innovative systems for tumor localization and overcoming MDR. Physical approaches such as combination of drug with thermal/ultrasound/photodynamic therapies to overcome MDR are focused. The review focuses on newer drug delivery systems developed to overcome MDR in cancer cell.
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Affiliation(s)
- Sonali Kapse-Mistry
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai Mumbai, India
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal Durban, South Africa
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay Mumbai, India
| | - Mayur Yergeri
- Department of Pharmaceutical Chemistry, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai Mumbai, India
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Pothayee N, Pothayee N, Hu N, Zhang R, Kelly DF, Koretsky AP, Riffle JS. Manganese graft ionomer complexes (MaGICs) for dual imaging and chemotherapy. J Mater Chem B 2014; 2:1087-1099. [PMID: 32261626 DOI: 10.1039/c3tb21299h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Novel manganese graft ionomer complexes (MaGICs) that contain Mn ions complexed with a polyaminobisphosphonate-g-poly(ethylene oxide) (PEO) copolymer were developed for use as T1-weighted contrast agents for MRI. The complexes exhibited good colloidal stability without release of free manganese and did not result in any in vitro toxicity against mouse hepatocytes. T1 relaxivities of the MaGICs at physiological pH were 2-10 times higher than that of a commercial manganese-based positive contrast agent. Anticancer drugs including doxorubicin, cisplatin and carboplatin were successfully encapsulated into the MaGICs with high efficiency. Drug release behavior was sustained and depended on pH (faster in acidic environments), drug structures and drug concentration (faster with high concentration). The anticancer drug-loaded manganese nanocarriers exhibited excellent anticancer activity against MCF-7 breast cancer cells together with high relaxivity. Thus, these drug-loaded MaGICs could potentially be utilized for simultaneous diagnosis and treatment of cancer.
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Affiliation(s)
- Nipon Pothayee
- Macromolecules and Interfaces Institute, Virginia Tech, 145 ICTAS 1, Blacksburg, VA 24061, USA.
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13
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Stephan C, Schlawne C, Grass S, Waack IN, Ferenz KB, Bachmann M, Barnert S, Schubert R, Bastmeyer M, de Groot H, Mayer C. Artificial oxygen carriers based on perfluorodecalin-filled poly(n-butyl-cyanoacrylate) nanocapsules. J Microencapsul 2013; 31:284-92. [DOI: 10.3109/02652048.2013.843600] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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14
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Faiyazuddin M, Ahmad N, Khar RK, Bhatnagar A, Ahmad FJ. Stabilized terbutaline submicron drug aerosol for deep lungs deposition: drug assay, pulmonokinetics and biodistribution by UHPLC/ESI-q-TOF-MS method. Int J Pharm 2012; 434:59-69. [PMID: 22583847 DOI: 10.1016/j.ijpharm.2012.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Revised: 04/30/2012] [Accepted: 05/03/2012] [Indexed: 11/16/2022]
Abstract
Terbutaline submicron particles (SμTBS) were prepared by nanoprecipitation technique followed by spray drying for deep lungs deposition. Inhalable SμTBS particles were 645.16 nm of diameter with 0.11μm of MMAD, suggested for better aerosol effects. Both submicron and micron-sized TBS particles were administered in rodents administered via major delivery routes, and their biological effects were compared by using UHPLC/ESI-q-TOF-MS method. TBS was found stable in all exposed conditions with 96.28-99.0% of recovery and <4.34% of accuracy (CV). An inhalation device was designed and validated to deliver medicines to lungs, which was found best at dose level of 25mg for 30 min of fluidization. Both submicron and micron particles were compared for in vivo lung deposition and a 1.67 fold increase in concentration was observed for SμTBS exposed by inhalation. Optimized DPI formulation contained lesser fraction of ultrafine particle (<500 nm) with the major fraction of submicron particles (>500 nm), advocated for better targeting to lungs. UHPLC/ESI-q-TOF-MS confirmed that designed submicron particles has been successfully delivered to the lungs. From tongue to lungs, the landing of pulmonary medicines can be improved by submicronization technology.
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Affiliation(s)
- Md Faiyazuddin
- Nanomedicine Research Lab, Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India.
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15
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Feracci H, Gutierrez BS, Hempel W, Gil IS. Organic Nanoparticles. NANOBIOTECHNOLOGY - INORGANIC NANOPARTICLES VS ORGANIC NANOPARTICLES 2012. [DOI: 10.1016/b978-0-12-415769-9.00008-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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16
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17
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Duan J, Zhang Y, Han S, Chen Y, Li B, Liao M, Chen W, Deng X, Zhao J, Huang B. Synthesis and in vitro/in vivo anti-cancer evaluation of curcumin-loaded chitosan/poly(butyl cyanoacrylate) nanoparticles. Int J Pharm 2010; 400:211-20. [PMID: 20813175 DOI: 10.1016/j.ijpharm.2010.08.033] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 07/24/2010] [Accepted: 08/25/2010] [Indexed: 12/18/2022]
Abstract
We have synthesized novel cationic poly(butyl) cyanoacrylate (PBCA) nanoparticles coated with chitosan, formulation of curcumin nanoparticles. The size and zeta potential of prepared curcumin nanoparticles were about 200 nm and +29.11 mV, respectively with 90.04% encapsulation efficiency. The transmission electron microscopy (TEM) study revealed the spherical nature of the prepared nanoparticles along with confirmation of particle size. Curcumin nanoparticles demonstrate comparable in vitro therapeutic efficacy to free curcumin against a panel of human hepatocellular cancer cell lines, as assessed by cell viability (3-[4,5-dimethylthiazol-2-yl]2,5-diphenyltetrazolium bromide assay [MTT assay]) and proapoptotic effects (annexin V/propidium iodide staining). In vivo, curcumin nanoparticles suppressed hepatocellular carcinoma growth in murine xenograft models and inhibited tumor angiogenesis. The curcumin nanoparticles' mechanism of action on hepatocellular carcinoma cells is a mirror that of free curcumin.
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Affiliation(s)
- Jinghua Duan
- Key Laboratory of Nanobiological Technology, Ministry of Health National Hepatobiliary and Enteric Surgery Research Center, Central South University, Changsha, Hunan 410008, PR China
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Sundar S, Kundu J, Kundu SC. Biopolymeric nanoparticles. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2010; 11:014104. [PMID: 27877319 PMCID: PMC5090546 DOI: 10.1088/1468-6996/11/1/014104] [Citation(s) in RCA: 162] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 02/26/2010] [Accepted: 01/27/2010] [Indexed: 05/12/2023]
Abstract
This review on nanoparticles highlights the various biopolymers (proteins and polysaccharides) which have recently revolutionized the world of biocompatible and degradable natural biological materials. The methods of their fabrication, including emulsification, desolvation, coacervation and electrospray drying are described. The characterization of different parameters for a given nanoparticle, such as particle size, surface charge, morphology, stability, structure, cellular uptake, cytotoxicity, drug loading and drug release, is outlined together with the relevant measurement techniques. Applications in the fields of medicine and biotechnology are discussed along with a promising future scope.
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Affiliation(s)
| | - Joydip Kundu
- Department of Biotechnology, Indian Institute of Technology, Kharagpur 721302, India
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Pietkiewicz J, Zielińska K, Saczko J, Kulbacka J, Majkowski M, Wilk KA. New approach to hydrophobic cyanine-type photosensitizer delivery using polymeric oil-cored nanocarriers: hemolytic activity, in vitro cytotoxicity and localization in cancer cells. Eur J Pharm Sci 2010; 39:322-35. [PMID: 20060468 DOI: 10.1016/j.ejps.2009.12.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 12/03/2009] [Accepted: 12/23/2009] [Indexed: 12/18/2022]
Abstract
We report on encapsulation of cyanine IR-768 in oil-in-water (o/w) microemulsion, i.e. fabrication of templated polymeric nanocapsules as effective nanocarriers for a new generation of photodynamic agents suitable for photodynamic therapy (PDT). Discussed here are nanocapsule imaging, their in vitro biological evaluation, cyanine encapsulation potential, and the cellular localization of cyanine IR-768 delivered in the nanocapsules to MCF-7 cancer cells. Oil-cored poly(n-butyl cyanoacrylate) (PBCA) nanocapsules were prepared by interfacial polymerization in o/w microemulsions formed by the nonionics Tween 80 (polysorbate 80, polyoxyethylene 20 sorbitan monooleate), and Brij 96 (polyoxyethylene 10 oleyl ether). Iso-propyl myristate (IPM), ethyl oleate (EOl), iso-octane (IO), and oleic acid (OA) were used as the oil phases and iso-propanol (IP) and propylene glycol (PG) as the cosurfactants. Such o/w droplets, also containing hydrophobic IR-768 in the oil phase, were applied in the interfacial polymerization of n-butyl cyanoacrylate at 10 degrees C at pH 5.0. The isolated cyanine-loaded nanoparticles were visualized by atomic force microscopy (AFM) and scanning electron microscopy (SEM), which proved their unimodal size distribution and spherical shape, with diameters dependent upon the monomer content and the template type. The entrapment efficiency of cyanine increased with increasing n-butyl cyanoacrylate concentration and varied from 65.7% to 91.7%. The results of in vitro erythrocyte hemolysis and the cell viability of breast cancer MCF-7 cells showed that the PBCA nanocapsules are quite safe carriers of IR-768 in the circulation, having a very low hemolytic potential and being non-toxic to the studied cells. Fluorescence microscopy visualized the cyanine intracellular distribution and, furthermore, demonstrated that PBCA-nanocarriers effectively delivered the IR-768 molecules to the MCF-7 doxorubicin-sensitive and -resistant cell lines. Photoirradiation of the cancer cells with entrapped photosensitizer decreased cell viability, demonstrating that this effect may be utilized in PDT.
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Affiliation(s)
- Jadwiga Pietkiewicz
- Department of Medical Biochemistry, Medical University of Wroclaw, Chalubinskiego 10, 50-368 Wroclaw, Poland
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Cationic polybutyl cyanoacrylate nanoparticles for DNA delivery. J Biomed Biotechnol 2009; 2009:149254. [PMID: 19300519 PMCID: PMC2655361 DOI: 10.1155/2009/149254] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 12/03/2008] [Accepted: 12/25/2008] [Indexed: 11/17/2022] Open
Abstract
To enhance the intracellular delivery potential of plasmid DNA using nonviral vectors, we used polybutyl cyanoacrylate (PBCA) and chitosan to prepare PBCA nanoparticles (NPs) by emulsion polymerization and prepared NP/DNA complexes through the complex coacervation of nanoparticles with the DNA. The object of our work is to evaluate the characterization and transfection efficiency of PBCA-NPs. The NPs have a zeta potential of 25.53 mV at pH 7.4 and size about 200 nm. Electrophoretic analysis suggested that the NPs with positive charges could protect the DNA from nuclease degradation and cell viability assay showed that the NPs exhibit a low cytotoxicity to human hepatocellular carcinoma (HepG2) cells. Qualitative and quantitative analysis of transfection in HepG2 cells by the nanoparticles carrying plasmid DNA encoding for enhanced green fluorescent protein (EGFP-N1) was done by digital fluorescence imaging microscopy system and fluorescence-activated cell sorting (FACS). Qualitative results showed highly efficient expression of GFP that remained stable for up to 96 hours. Quantitative results from FACS showed that PBCA-NPs were significantly more effective in transfecting HepG2 cells after 72 hours postincubation. The results of this study suggested that PBCA-NPs have favorable properties for nonviral delivery.
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Bhavna, Ahmad FJ, Mittal G, Jain GK, Malhotra G, Khar RK, Bhatnagar A. Nano-salbutamol dry powder inhalation: A new approach for treating broncho-constrictive conditions. Eur J Pharm Biopharm 2009; 71:282-91. [DOI: 10.1016/j.ejpb.2008.09.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 08/27/2008] [Accepted: 09/30/2008] [Indexed: 10/21/2022]
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22
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Controlled degradation of poly(ethyl cyanoacrylate-co-methyl methacrylate) (PECA-co-PMMA) copolymers. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.01.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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24
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Fresta M, Puglisi G. Association of netilmicin Sulphate to poly(Alkylcyanoacrylate) Nanoparticles: Factors Influencing particle delivery Behaviour. Drug Dev Ind Pharm 2008. [DOI: 10.3109/03639049409050235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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25
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Bapat N, Boroujerdi M. Effect of Colloidal Carriers on the Disposition and Tissue Uptake of Doxorubicin: II. Conjugation with Isobutyl-Cyanoacrylate Nanoparticles. Drug Dev Ind Pharm 2008. [DOI: 10.3109/03639049309050170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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26
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Literature Alerts. J Microencapsul 2008. [DOI: 10.3109/02652049209021254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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27
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El-Samaligy MS, Rojanasakul Y, Charlton JF, Weinstein GW, Lim JK. Ocular disposition of nanoencapsulated acyclovir and ganciclovir via intravitreal injection in rabbit's eye. Drug Deliv 2008. [DOI: 10.3109/10717549609031179] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Jain A, Jain SK. In vitro and cell uptake studies for targeting of ligand anchored nanoparticles for colon tumors. Eur J Pharm Sci 2008; 35:404-16. [PMID: 18824095 DOI: 10.1016/j.ejps.2008.08.008] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2008] [Revised: 07/07/2008] [Accepted: 08/27/2008] [Indexed: 11/16/2022]
Abstract
Hyaluronic acid (HA) coupled chitosan nanoparticles (HACTNP) bearing 5-flurouracil (5FU) were prepared, by ionotropic gelation method, for the effective delivery of drug to the colon tumors. HACTNP appeared to be spherical in shape and mean size was found to be around 150+/-3.4nm with low polydispersity index. The in vitro drug release was investigated using USP dissolution test (paddle type) apparatus in different simulated GIT fluids. The biocompatibility of NPs formulations were evaluated for in vitro cytotoxicity by MTT assay using HT-29 cell lines and cell uptake was assessed by fluorescent microscopy. Cellular uptake of HACTNP was determined by incorporating calcein as a fluorescent marker. The cellular uptake of fluorescent HACTNP was clearly evidenced by fluorescence microscopy. HACTNP nanoparticles showed significant higher uptake by cancer cells as compared to uncoupled nanoparticles and the uptake of HA coupled CTNPs by HT-29 colon cancer cells were observed to be 7.9 times more as compared to uncoupled CTNPs at the end of 4h. The cytotoxicity of 5FU incorporated in HACTNP was higher compared to the conventional 5FU solution, even at the lower concentrations. 5FU in HACTNP was about 2.60-folds more effective than free 5FU on HT-29 cells.
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Affiliation(s)
- Anekant Jain
- Pharmaceutics Research Projects Laboratory, Department of Pharmaceutical Sciences, Dr. Hari Singh Gour Vishwavidyalaya, Sagar 470003, MP, India
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29
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Yoksan R, Chirachanchai S. Amphiphilic chitosan nanosphere: Studies on formation, toxicity, and guest molecule incorporation. Bioorg Med Chem 2008; 16:2687-96. [DOI: 10.1016/j.bmc.2007.11.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2007] [Revised: 11/09/2007] [Accepted: 11/12/2007] [Indexed: 11/26/2022]
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30
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31
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Deng L, Yao C, Li A, Dong A. Preparation and characterization of poly{[α-maleic anhydride-ω-methoxy-poly(ethylene glycol)]-co-(ethyl cyanoacrylate)} copolymer nanoparticles. POLYM INT 2005. [DOI: 10.1002/pi.1797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Sham JOH, Zhang Y, Finlay WH, Roa WH, Löbenberg R. Formulation and characterization of spray-dried powders containing nanoparticles for aerosol delivery to the lung. Int J Pharm 2004; 269:457-67. [PMID: 14706257 DOI: 10.1016/j.ijpharm.2003.09.041] [Citation(s) in RCA: 160] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Spray-drying is a common practice of powder preparation for a wide range of drugs. Spray-dried powders can be used to deliver particles to the lungs via a dry powder inhaler (DPI). The present study investigated the feasibility of developing a platform for aerosol delivery of nanoparticles. Lactose was used as the excipient and spray-dried with two different types of nanoparticles: gelatin and polybutylcyanoacrylate nanoparticles. Results showed that some carrier particles were hollow while others had a continuous matrix. Gelatin nanoparticles were incorporated throughout the matrix and sometimes accumulated at one end of the lactose. Polycyanoacrylate nanoparticles mostly clustered in different spots within the lactose carriers. The mean sizes of both nanoparticle types were characterized at two different times: before they were spray-dried and after they were redissolved from the spray-dried powders. Both nanoparticle types remained in the nano-range size after spray-drying. The mean nanoparticle sizes were increased by approximately 30% after spray-drying, though this increase was statistically significant only for the gelatin nanoparticles. Dispersion of the powder with an in-house passive dry powder inhaler and subsequent cascade impaction measurements showed that incorporation of the nanoparticles did not affect the fine particle fraction (FPF) or mass median aerodynamic diameter (MMAD) of the powders. FPF was approximately 40% while MMAD was 3.0+/-0.2 microm, indicating the present formulations yield aerosols of a suitable particle size for efficient lung delivery of nanoparticles. The present work demonstrates that nanoparticles can be delivered to the lungs via carrier particles that dissolve after coming in contact with the aqueous environment of the lung epithelium. This opens the way for new drug-targeting strategies using nanoparticles for pulmonary delivery of drugs and diagnostics.
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Affiliation(s)
- Jeffrey O-H Sham
- Department of Radiation Oncology, Cross Cancer Institute, Edmonton, Alta., Canada T6G 1Z2
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33
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Krauel K, Pitaksuteepong T, Davies NM, Rades T. Entrapment of Bioactive Molecules in Poly (Alkylcyanoacrylate) Nanoparticles. ACTA ACUST UNITED AC 2004. [DOI: 10.2165/00137696-200402040-00005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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34
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35
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Levis SR, Deasy PB. Use of coated microtubular halloysite for the sustained release of diltiazem hydrochloride and propranolol hydrochloride. Int J Pharm 2003; 253:145-57. [PMID: 12593945 DOI: 10.1016/s0378-5173(02)00702-0] [Citation(s) in RCA: 157] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Halloysite is a naturally occurring microtubular aluminosilicate mineral. The highly water soluble cationic drug, diltiazem HCl, was shown to bind to the polyanionic surfaces of the material to achieve a slight sustained release effect on dissolution testing due to reversible chemisorption and/or hindered release from the drug loaded lumen. A greater sustained release effect was more apparent when the less water soluble cationic drug, propranolol HCl, was examined. Attempts to further delay drug release by loading diltiazem HCl from a polyvinylpyrrolidone solution into the halloysite had little effect. However, a range of cationic polymers, including chitosan cross-linked with glutaraldehyde, was shown to bind to halloysite and was used to achieve significant delayed drug release. Coating with adequate polyethyleneimine was particularly effective at delaying drug release, being dependent on the architecture of the interaction between the polycation and the mineral. When a range of alkyl-2-cyanoacrylate monomers applied from a non-aqueous solvent by an in situ polymerisation procedure was examined, diltiazem HCl loaded halloysite dispersed in poly-iso-butyl cyanoacrylate was found to be the most effective at reducing the burst effect noted with aqueous coating systems.
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Affiliation(s)
- S R Levis
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, Trinity College, University of Dublin, Dublin 2, Ireland
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36
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Ding R, Hu Y, Gui Z, Zong R, Chen Z, Fan W. Preparation and characterization of polystyrene/graphite oxide nanocomposite by emulsion polymerization. Polym Degrad Stab 2003. [DOI: 10.1016/s0141-3910(03)00132-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Kwon SS, Nam YS, Lee JS, Ku BS, Han SH, Lee JY, Chang IS. Preparation and characterization of coenzyme Q10-loaded PMMA nanoparticles by a new emulsification process based on microfluidization. Colloids Surf A Physicochem Eng Asp 2002. [DOI: 10.1016/s0927-7757(02)00212-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Yoo HS, Lee EA, Park TG. Doxorubicin-conjugated biodegradable polymeric micelles having acid-cleavable linkages. J Control Release 2002; 82:17-27. [PMID: 12106973 DOI: 10.1016/s0168-3659(02)00088-3] [Citation(s) in RCA: 281] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Doxorubicin was chemically conjugated to the terminal end of a di-block copolymer composed of poly(L-lactic acid) (PLLA) and methoxy-poly(ethylene glycol) (mPEG) via two acid-cleavable linkages. A hydrazone bond and a cis-acotinyl bond were formed between doxorubicin and the terminal group of PLLA segment in the block copolymer. Doxorubicin-conjugated PLLA-mPEG di-block copolymers self-assembled to form micelles in aqueous solution. The doxorubicin-conjugated micelles were about 89.1 nm in diameter and their critical micelle concentration was 1.3 microg/ml. These values were comparable with those of unconjugated micelles. In an acidic condition, the conjugated doxorubicin in the hydrazone linkage was readily cleaved, releasing doxorubicin in an intact structure. Doxorubicin-conjugated PLLA-mPEG micelles were more potent in cell cytotoxicity than free doxorubicin, suggesting that they were more easily taken up within cells with concomitant rapid release of cleaved doxorubicin into the cytoplasm from acidic endosomes.
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Affiliation(s)
- Hyuk Sang Yoo
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon 305-701, South Korea
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39
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Pitaksuteepong T, Davies NM, Tucker IG, Rades T. Factors influencing the entrapment of hydrophilic compounds in nanocapsules prepared by interfacial polymerisation of water-in-oil microemulsions. Eur J Pharm Biopharm 2002; 53:335-42. [PMID: 11976022 DOI: 10.1016/s0939-6411(01)00245-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study demonstrates the effect of drug properties and method of loading (sorption and encapsulation) on entrapment within poly(alkyl cyanoacrylate) nanocapsules prepared by interfacial polymerisation of biocompatible water-in-oil microemulsions. For small molecular weight compounds (<1000 Da), entrapment efficiency is more dependent on charge of the compound than on the method used for entrapment. Entrapment efficiency within the negatively charged nanocapsules (zeta potential approximately -30 mV) was in the order cationic compound > neutral compound > anionic compound. Only minimal differences for entrapment efficiency were noted between sorption (addition of the compound 4 h after initiation of the polymerisation) and encapsulation (addition of the compound to microemulsion prior to polymerisation). For high molecular weight compounds, the method used for entrapment however, is very important. For hydrophilic macromolecules such as proteins, high entrapment efficiencies can only be achieved by encapsulation. Entrapment of such compounds seems to be independent of the net charge of the compound being encapsulated but depended on the molecular weight. For nanocapsules prepared by interfacial polymerisation of water-in-oil microemulsions, these findings are useful as a foundation in the development of nanocapsules with desired properties.
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Affiliation(s)
- Tasana Pitaksuteepong
- Formulation and Drug Delivery Group, School of Pharmacy, University of Otago, Dunedin, New Zealand.
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40
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Kohori F, Yokoyama M, Sakai K, Okano T. Process design for efficient and controlled drug incorporation into polymeric micelle carrier systems. J Control Release 2002; 78:155-63. [PMID: 11772457 DOI: 10.1016/s0168-3659(01)00492-8] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
For the efficient and well-controlled incorporation of the anti cancer drug adriamycin (ADR) into the inner core of a thermo-responsive polymeric micelle carrier system, we have analyzed and optimized the incorporation procedure in this paper. A dialysis method was used for preparing the micelle solution and ADR incorporation simultaneously. Quantities of ADR and triethylamine (TEA) were varied and the effects of their quantities were analyzed. Solvent composition at the starting time of dialysis was also varied. The initial dialysis condition, solvent with 40% water, brought about the largest amount and yield of ADR incorporation. With the initial 40% water content, it was considered that the block polymers formed a micelle-like association with a swollen hydrophobic core. This swollen core may be suitable for a large amount of ADR incorporation, since this core, swollen by an organic solvent-water mixture, is expected to show a liquid-state character to allow ADR molecules entry into the cores. By starting the dialysis procedure at this 40% water content, this swollen core suitable for the ADR incorporation is considered to be maintained for a much longer period than a case starting with a polymer-ADR solution in a solvent with a water content of less than 40%, and, therefore, ADR is expected to be incorporated efficiently. Preparation temperature of 20-25 degrees C was found to provide the most effective ADR incorporation in this thermo-responsive polymeric micelle system. These results indicate that the efficient incorporation of ADR can be achieved in consideration of the dynamic micelle formation and drug incorporation processes.
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Affiliation(s)
- Fukashi Kohori
- Department of Applied Chemistry, Waseda University, 3-4-1, Ohkubo, Shinjuku-ku, 169-8555, Tokyo, Japan
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41
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Pharmaceutical Polymeric Controlled Drug Delivery Systems. FILLED ELASTOMERS DRUG DELIVERY SYSTEMS 2002. [DOI: 10.1007/3-540-45362-8_2] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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42
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Abstract
The administration of anti-cancer agents is currently associated with significant toxicity and lack of tumour specificity. Prodrugs are being designed to favourably alter the therapeutic index of these agents by improving their efficacy and reducing toxicity. Progress in the development of prodrugs including the cytotoxic agents most commonly used in cancer treatments namely 5-fluorouracil (5-FU), the anthracyclines, paclitaxel and platinum will be described. Many of these agents are at an early stage of development: however, this article will also describe those which have already made an impact in the clinic. It is likely that future improvements in care will come from refinement of the drugs already well established in clinical practice. In addition, this technology could be applied to novel agents with alternative cellular targets such as those involved in angiogenesis or in conferring metastatic potential. Thus, lessons learned with standard drugs may be applicable across a wider spectrum of therapeutics.
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Affiliation(s)
- M J Ferguson
- ANCHOR Unit, Aberdeen Royal Infirmary, Aberdeen, UK
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43
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Fresta M, Fontana G, Bucolo C, Cavallaro G, Giammona G, Puglisi G. Ocular tolerability and in vivo bioavailability of poly(ethylene glycol) (PEG)-coated polyethyl-2-cyanoacrylate nanosphere-encapsulated acyclovir. J Pharm Sci 2001; 90:288-97. [PMID: 11170022 DOI: 10.1002/1520-6017(200103)90:3<288::aid-jps4>3.0.co;2-5] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Acyclovir-loaded polyethyl-2-cyanoacrylate (PECA) nanospheres were prepared by an emulsion polymerization process in the micellar phase and characterized. The influence of the presence of nonionic surfactant as well as other substances [i.e., 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CyD) and poly(ethylene glycol) (PEG)], on formulation parameters and loading capacity was investigated. In particular, the presence of PEG resulted in an increase of mean size and size distribution. To obtain PEG-coated PECA nanospheres with a mean size of < 200 nm, Pluronic F68 at concentrations > 1.5% (w/v) should be used during preparation. The presence of PEG also resulted in a change in zeta potential, from -25.9 mV for uncoated nanospheres to -12.2 mV for PEG-coated PECA nanospheres. The presence of HP-beta-CyD elicited an increase of nanosphere size and size distribution, but zeta potential was not influenced. In vitro drug release from nanospheres was determined in both phosphate buffer (pH 7.4) and plasma. The presence of HP-beta-CyD and PEG did not influence the acyclovir release rate in plasma. In the case of release in phosphate buffer, PEG-coated nanospheres showed a slower release. Ocular tolerability of PEG-coated PECA nanospheres was evaluated by the in vivo Draize test. This colloidal carrier was well tolerated, eliciting no particular inflammation at the level of the various ocular structures. In vivo ocular bioavailability was evaluated by instilling 50 microL of the acyclovir-loaded nanospheres only once in the conjunctival sac of rabbit eyes. At various time intervals, aqueous humour acyclovir content was determined by high-performance liquid chromatography. Acyclovir-loaded PEG-coated PECA nanospheres were compared with an aqueous solution of the drug and a physical mixture of acyclovir nanospheres. The acyclovir-loaded PEG-coated PECA nanospheres showed a significant (p < 0.001) increase of drug levels (25-fold) in aqueous humor compared with the free drug or the physical mixture. This finding is probably due to an improved ocular mucoadhesion of PEG-coated PECA nanospheres.
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Affiliation(s)
- M Fresta
- Department of Pharmaceutical Sciences, Viale Andrea Doria 6, I-95125 Catania, Italy
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44
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Jang LW, Kang CM, Lee DC. A new hybrid nanocomposite prepared by emulsion copolymerization of ABS in the presence of clay. ACTA ACUST UNITED AC 2001. [DOI: 10.1002/1099-0488(20010315)39:6<719::aid-polb1046>3.0.co;2-n] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Miglietta A, Cavalli R, Bocca C, Gabriel L, Gasco MR. Cellular uptake and cytotoxicity of solid lipid nanospheres (SLN) incorporating doxorubicin or paclitaxel. Int J Pharm 2000; 210:61-7. [PMID: 11163988 DOI: 10.1016/s0378-5173(00)00562-7] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Solid Lipid Nanospheres (SLN) are colloidal therapeutic systems proposed for several administration routes and obtained by dispersing warm microemulsions in cold water. SLN as carriers of doxorubicin and paclitaxel have been previously studied. In this study, the cellular uptake of SLN and the cytotoxicity of doxorubicin and paclitaxel incorporated into SLN were investigated on two cell-lines, human promyelocytic leukemia (HL60) and human breast carcinoma (MCF-7). Cellular uptake of SLN was determined by incorporating 6-coumarin as fluorescent marker. The cellular uptake of fluorescent SLN was clearly evidenced by fluorescence microscopy. The cytotoxicity of doxorubicin incorporated in SLN was higher compared to the conventional doxorubicin solution, even at the lower concentrations. Paclitaxel in SLN was about 100-fold more effective than free paclitaxel on MCF-7 cells, while on HL60 cells a lower sensitivity was achieved with paclitaxel in SLN. Unloaded SLN had no cytotoxic effect on HL60 and MCF-7 cells.
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Affiliation(s)
- A Miglietta
- Dipartimento di Medicina ed Oncologia Sperimentale, Università degli Studi di Torino, Italy
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46
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Yoo HS, Lee KH, Oh JE, Park TG. In vitro and in vivo anti-tumor activities of nanoparticles based on doxorubicin-PLGA conjugates. J Control Release 2000; 68:419-31. [PMID: 10974396 DOI: 10.1016/s0168-3659(00)00280-7] [Citation(s) in RCA: 283] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Doxorubicin was chemically conjugated to a terminal end group of poly(D,L-lactic-co-glycolic acid) [PLGA] by an ester linkage and the doxorubicin-PLGA conjugate was formulated into nanoparticles. A carboxylic acid end group of PLGA was conjugated to a primary hydroxyl group of doxorubicin. The primary amine group of doxorubicin was protected during the conjugation process and then deprotected. The nanoparticles containing the conjugate exhibited sustained doxorubicin release profiles over a 1-month period, whereas those containing unconjugated free doxorubicin showed a rapid doxorubicin release within 5 days. Doxorubicin release patterns could be controlled by conjugating doxorubicin to PLGA having different molecular weights. The conjugated doxorubicin nanoparticles showed increased uptake within a HepG2 cell line, which was quantitated by a flow cytometry and visualized by confocal microscopy. The nanoparticles exhibited slightly lower IC(50) value against the HepG2 cell line compared to that of free doxorubicin. In vivo anti-tumor activity assay also showed that a single injection of the nanoparticles had comparable activity to that of free doxorubicin administered by daily injection. The conjugation approach of doxorubicin to PLGA was potentially useful for the formulation of nanoparticles that requires targeting for cancer cells as well as sustained release at the site.
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Affiliation(s)
- H S Yoo
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, 305-701, Taejon, South Korea
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47
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Moselhy J, Wu XY, Nicholov R, Kodaria K. In vitro studies of the interaction of poly(NIPAm/MAA) nanoparticles with proteins and cells. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2000; 11:123-47. [PMID: 10718475 DOI: 10.1163/156856200743616] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The pH- and temperature-responsive poly(N-isopropylacrylamide-co-methacrylic acid) (PNIPAm/MAA) nanoparticles are of potential application in targeted drug delivery. Their responsive properties in the presence of human serum albumin were investigated using dynamic light scattering (DLS), protein assay, and electron spin resonance (ESR) spectroscopy. Their interaction with human monocytes and polymorphonuclear leukocytes (PMNLs) was studied using scanning electron microscopy (SEM) and oxygen consumption method. The nanoparticles exhibited a volume phase transition at 35-40 degrees C in Hanks balanced salt solution (HBSS) and in phosphate buffer solution (PBS) of pH 7.4. The diameter of the nanoparticles decreased slightly in the presence of HSA at 25 degrees C at neutral pH, whereas an increase in the diameter in pH 6 PBS at 40 degrees C was revealed. The amount of albumin adsorbed onto the nanoparticles decreased with increasing temperature. The ESR spectra of spin labeled HSA indicated a more restricted environment in the nanoparticles at elevated temperatures. The stimulation of PMNL oxygen consumption by PNIPAm based nanoparticles, an indication of phagocytosis of the particles, was not observed regardless whether the nanoparticles were incubated in plasma or serum. In contrast, the more hydrophobic polystyrene (PSt) particles induced a significant increase in the rate of oxygen consumption after the incubation. PNIPAm/MAA-grafted-PSt particles behaved similarly to the PNIPAm/MAA nanoparticles, suggesting that surface properties dictate the recognition of colloids by PMNLs.
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Affiliation(s)
- J Moselhy
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Toronto, Ontario, Canada
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48
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Yang SC, Ge HX, Hu Y, Jiang XQ, Yang CZ. Doxorubicin-loaded poly(butylcyanoacrylate) nanoparticles produced by emulsifier-free emulsion polymerization. J Appl Polym Sci 2000. [DOI: 10.1002/1097-4628(20001017)78:3<517::aid-app60>3.0.co;2-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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50
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Mbela TK, Deharo E, Haemers A, Ludwig A. Submicron oil-in-water emulsion formulations for mefloquine and halofantrine: effect of electric-charge inducers on antimalarial activity in mice. J Pharm Pharmacol 1998; 50:1221-5. [PMID: 9877306 DOI: 10.1111/j.2042-7158.1998.tb03337.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Stearylamine, oleic acid, phosphatidylserine and dicetylphosphate have been studied to determine their capacity to induce electric charge on non-ionic submicron emulsions containing halofantrine and mefloquine. The in-vivo antimalarial activity of drug-loaded emulsions, evaluated in mice, was affected by the nature of the additives used. In particular, the electric-charge inducers markedly affected the pharmacological activity of mefloquine, but not of halofantrine. After subcutaneous administration ED50 values (the doses affording 50% protection) were 3 and 15 mg kg(-1), respectively, for halofantrine and mefloquine emulsions without charge inducers. The mefloquine-loaded emulsions with charge inducers were active at 10 mg kg(-1) for dicetylphosphate, 17 mg kg(-1) for phosphatidylserine, 23 mg kg(-1) for oleic acid and 27 mg kg(-1) for stearylamine, again after subcutaneous administration. This work has enabled the formulation of stable emulsions, incorporating drugs with high antimalarial activity, which are proposed for parenteral delivery of these fairly soluble drugs.
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Affiliation(s)
- T K Mbela
- Department of Pharmaceutics and Drug Analysis, University of Kinshasa, Democratic Republic of Congo
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