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Weecharangsan W, Lee RJ. Surface Solid Dispersion of Ketoconazole on Trehalose Dihydrate using Spray Drying to Achieve Enhanced Dissolution Rate. AAPS PharmSciTech 2024; 25:220. [PMID: 39313719 DOI: 10.1208/s12249-024-02941-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 09/10/2024] [Indexed: 09/25/2024] Open
Abstract
Ketoconazole (K) is a poorly water-soluble drug that faces significant challenges in achieving therapeutic efficacy. This study aimed to enhance the dissolution rate of ketoconazole by depositing spray-dried ketoconazole (SK) onto the surface of ground trehalose dihydrate (T) using spray drying. Ketoconazole-trehalose surface solid dispersions (SKTs) were prepared in ratios of 1:1 (SK1T1), 1:4 (SK1T4), and 1:10 (SK1T10), and characterized them using particle size analysis, scanning electron microscopy, powder X-ray diffraction, and in vitro dissolution studies. Results showed that the dissolution rates of the dispersions were significantly higher than those of pure ketoconazole, with the 1:10 ratio showing the highest dissolution rate. The improved dissolution was attributed to the formation of a new crystalline phase and better dispersion of ketoconazole particles. These findings suggest that the surface solid dispersion approach could be a valuable method for enhancing the bioavailability of poorly water-soluble drugs.
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Affiliation(s)
- Wanlop Weecharangsan
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok, 26120, Thailand.
| | - Robert J Lee
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH, 43210, United States of America
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2
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Renukuntla J, Peterson-Sockwell S, Clark BA, Godage NH, Gionfriddo E, Bolla PK, Boddu SHS. Design and Preclinical Evaluation of Nicotine-Stearic Acid Conjugate-Loaded Solid Lipid Nanoparticles for Transdermal Delivery: A Technical Note. Pharmaceutics 2023; 15:pharmaceutics15041043. [PMID: 37111529 PMCID: PMC10146358 DOI: 10.3390/pharmaceutics15041043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/09/2023] [Accepted: 03/22/2023] [Indexed: 04/29/2023] Open
Abstract
This study aimed to develop and evaluate nicotine--stearic acid conjugate-loaded solid lipid nanoparticles (NSA-SLNs) for transdermal delivery in nicotine replacement therapy (NRT). Nicotine conjugation to stearic acid prior to SLN formulation greatly increased drug loading. SLNs loaded with a nicotine-stearic acid conjugate were characterized for size, polydispersity index (PDI), zeta potential (ZP), entrapment efficiency, and morphology. Pilot in vivo testing was carried out in New Zealand Albino rabbits. The size, PDI, and ZP of nicotine-stearic acid conjugate-loaded SLNs were 113.5 ± 0.91 nm, 0.211 ± 0.01, and -48.1 ± 5.75 mV, respectively. The entrapment efficiency of nicotine-stearic acid conjugate in SLNs was 46.45 ± 1.53%. TEM images revealed that optimized nicotine-stearic acid conjugate-loaded SLNs were uniform and roughly spherical in shape. Nicotine-stearic acid conjugate-loaded SLNs showed enhanced and sustained drug levels for up to 96 h in rabbits when compared with the control nicotine formulation in 2% HPMC gel. To conclude, the reported NSA-SLNs could be further explored as an alternative for treating smoking cessation.
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Affiliation(s)
- Jwala Renukuntla
- School of Pharmacy, The University of Texas at El Paso, 1101 N Campbell St., El Paso, TX 79902, USA
- Department of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC 27240, USA
| | - Samuel Peterson-Sockwell
- Department of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC 27240, USA
| | - Bradley A Clark
- Department of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC 27240, USA
| | - Nipunika H Godage
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH 43606, USA
| | - Emanuela Gionfriddo
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH 43606, USA
| | - Pradeep Kumar Bolla
- School of Pharmacy, The University of Texas at El Paso, 1101 N Campbell St., El Paso, TX 79902, USA
| | - Sai H S Boddu
- College of Pharmacy and Health Sciences, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates
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3
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Bhaskaran NA, Jitta SR, Cheruku S, Kumar N, Kumar L. Orally delivered solid lipid nanoparticles of irinotecan coupled with chitosan surface modification to treat colon cancer: Preparation, in-vitro and in-vivo evaluations. Int J Biol Macromol 2022; 211:301-315. [PMID: 35568152 DOI: 10.1016/j.ijbiomac.2022.05.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/17/2022] [Accepted: 05/08/2022] [Indexed: 11/19/2022]
Abstract
Irinotecan-loaded solid lipid nanoparticles (IRI-SLNs) was formulated and tested for its potential activity against colon cancer. IRI-SLNs were prepared by applying the principles of DoE. Nanoparticles were further surface modified using chitosan. Characterizations such as size, poly-dispersity, surface charge, morphology, entrapment, drug release pattern, cytotoxicity were conducted. In-vivo studies in male Wistar rats were carried to ascertain distribution pattern of SLNs and their acute toxicity on various vital organs. Lastly, stability of the SLNs were evaluated. Particles had a size, polydispersity and zeta potential of 430.77 ± 8.69 nm, 0.36 ± 0.02 and -40.06 ± 0.61 mV, respectively. Entrapment of IRI was 62.24 ± 2.90% in IRI-SLNs. Sustained drug release was achieved at a colonic pH and long-term stability of NPs was seen. Cytotoxicity assay results showed that SLNs exhibited toxicity on HCT-116 cells. Biodistribution studies confirmed higher concentration of drug in the colon after surface modification. An acute toxicity study conducted for 7 days showed no severe toxic effects on major organs. Thus, we picture that the developed SLNs may benefit in delivering IRI to the tumour cells, therefore decreasing the dose and dose-associated toxicities.
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Affiliation(s)
- Navya Ajitkumar Bhaskaran
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Srinivas Reddy Jitta
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - SriPragnya Cheruku
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Nitesh Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India; Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Patna, Bihar, India
| | - Lalit Kumar
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
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4
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Guerrero-Hernández L, Meléndez-Ortiz HI, Cortez-Mazatan GY, Vaillant-Sánchez S, Peralta-Rodríguez RD. Gemini and Bicephalous Surfactants: A Review on Their Synthesis, Micelle Formation, and Uses. Int J Mol Sci 2022; 23:1798. [PMID: 35163721 PMCID: PMC8836724 DOI: 10.3390/ijms23031798] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 12/14/2022] Open
Abstract
The use of surfactants in polymerization reactions is particularly important, mainly in emulsion polymerizations. Further, micelles from biocompatible surfactants find use in pharmaceutical dosage forms. This paper reviews recent developments in the synthesis of novel gemini and bicephalous surfactants, micelle formation, and their applications in polymer and nanoparticle synthesis, oil recovery, catalysis, corrosion, protein binding, and biomedical area, particularly in drug delivery.
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Affiliation(s)
- Lluvia Guerrero-Hernández
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, Col. San José de los Cerritos, Saltillo 25294, Mexico; (L.G.-H.); (G.Y.C.-M.); (S.V.-S.)
| | - Héctor Iván Meléndez-Ortiz
- CONACyT—Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, Col. San José de los Cerritos, Saltillo 25294, Mexico
| | - Gladis Y. Cortez-Mazatan
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, Col. San José de los Cerritos, Saltillo 25294, Mexico; (L.G.-H.); (G.Y.C.-M.); (S.V.-S.)
| | - Sandra Vaillant-Sánchez
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, Col. San José de los Cerritos, Saltillo 25294, Mexico; (L.G.-H.); (G.Y.C.-M.); (S.V.-S.)
| | - René D. Peralta-Rodríguez
- Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna No. 140, Col. San José de los Cerritos, Saltillo 25294, Mexico; (L.G.-H.); (G.Y.C.-M.); (S.V.-S.)
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5
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Golan O, Shalom H, Kaplan-Ashiri I, Cohen SR, Feldman Y, Pinkas I, Ofek Almog R, Zak A, Tenne R. Poly(L-lactic acid) Reinforced with Hydroxyapatite and Tungsten Disulfide Nanotubes. Polymers (Basel) 2021; 13:3851. [PMID: 34771407 PMCID: PMC8587543 DOI: 10.3390/polym13213851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 11/17/2022] Open
Abstract
Poly(L-lactic acid) (PLLA) is a biocompatible, biodegradable, and semi-crystalline polymer with numerous applications including food packaging, medical implants, stents, tissue engineering scaffolds, etc. Hydroxyapatite (HA) is the major component of natural bone. Conceptually, combining PLLA and HA could produce a bioceramic suitable for implants and bone repair. However, this nanocomposite suffers from poor mechanical behavior under tensile strain. In this study, films of PLLA and HA were prepared with small amounts of nontoxic WS2 nanotubes (INT-WS2). The structural aspects of the films were investigated via electron microscopy, X-ray diffraction, Raman microscopy, and infrared absorption spectroscopy. The mechanical properties were evaluated via tensile measurements, micro-hardness tests, and nanoindentation. The thermal properties were investigated via differential scanning calorimetry. The composite films exhibited improved mechanical and thermal properties compared to the films prepared from the PLLA and HA alone, which is advantageous for medical applications.
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Affiliation(s)
- Ofek Golan
- Department of Materials Engineering, Azrieli College of Engineering, Jerusalem 9103501, Israel; (O.G.); (R.O.A.)
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 76100, Israel;
| | - Hila Shalom
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 76100, Israel;
| | - Ifat Kaplan-Ashiri
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Sidney R. Cohen
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Yishay Feldman
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Iddo Pinkas
- Chemical Research Support Department, Weizmann Institute, Rehovot 76100, Israel; (I.K.-A.); (S.R.C.); (Y.F.); (I.P.)
| | - Rakefet Ofek Almog
- Department of Materials Engineering, Azrieli College of Engineering, Jerusalem 9103501, Israel; (O.G.); (R.O.A.)
| | - Alla Zak
- Department of Sciences, Holon Institute of Technology, Holon 58102, Israel;
| | - Reshef Tenne
- Department of Molecular Chemistry and Materials Science, Weizmann Institute, Rehovot 76100, Israel;
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Dhumal D, Patil PD, Kulkarni RV, Akamanchi KG. Experimentally Validated QSAR Model for Surface p K a Prediction of Heterolipids Having Potential as Delivery Materials for Nucleic Acid Therapeutics. ACS OMEGA 2020; 5:32023-32031. [PMID: 33344856 PMCID: PMC7745400 DOI: 10.1021/acsomega.0c04931] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
The application of lipid-based drug delivery technologies for bioavailability enhancement of drugs has led to many successful products in the market for clinical use. Recent studies on amine-containing heterolipid-based synthetic vectors for delivery of siRNA have witnessed the United States Food and Drug Administration (USFDA) approval of the first siRNA drug in the year 2018. The studies on various synthetic lipids investigated for delivery of such nucleic acid therapeutics have revealed that the surface pK a of the constructed nanoparticles plays an important role. The nanoparticles showing pK a values within the range of 6-7 have performed very well. The development of high-performing lipid vectors with structural diversity and falling within the desired surface pK a is by no means trivial and requires tedious trial and error efforts; therefore, a practical solution is called for. Herein, an attempt to is made provide a solution by predicting the statistically significant pK a through a predictive quantitative structure-activity relationship (QSAR) model. The QSAR model has been constructed using a series of 56 amine-containing heterolipids having measured pK a values as a data set and employing a partial least-squares regression coupled with stepwise (SW-PLSR) forward algorithm technique. The model was tested using statistical parameters such as r 2, q 2, and pred_r 2, and the model equation explains 97.2% (r 2 = 0.972) of the total variance in the training set and it has an internal (q 2) and an external (pred_r 2) predictive ability of ∼83 and ∼63%, respectively. The model was validated by synthesizing a series of designed heterolipids and comparing measured surface pK a values of their nanoparticle assembly using a 2-(p-toluidino)-6-napthalenesulfonic acid (TNS) assay. Predicted and measured surface pK a values of the synthesized heterolipids were in good agreement with a correlation coefficient of 93.3%, demonstrating the effectiveness of this QSAR model. Therefore, we foresee that our developed model would be useful as a tool to cut short tedious trial and error processes in designing new amine-containing heterolipid vectors for delivery of nucleic acid therapeutics, especially siRNA.
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Affiliation(s)
- Dinesh
M. Dhumal
- Department
of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400019, India
| | - Pankaj D. Patil
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | | | - Krishnacharya G. Akamanchi
- Department
of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400019, India
- Department
of Allied Health Sciences, Shri B.M. Patil
Medical College, Hospital and Research Centre, BLDE Deemed to be University, Vijayapura 586103, India
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Bolla PK, Gote V, Singh M, Yellepeddi VK, Patel M, Pal D, Gong X, Sambalingam D, Renukuntla J. Preparation and characterization of lutein loaded folate conjugated polymeric nanoparticles. J Microencapsul 2020; 37:502-516. [PMID: 32842813 DOI: 10.1080/02652048.2020.1809724] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AIM To prepare and characterise lutein-loaded polylactide-co-glycolide-polyethylene glycol-folate (PLGA-PEG-FOLATE) nanoparticles and evaluate enhanced uptake in SK-N-BE(2) cells. METHODS Nanoparticles were prepared using O/W emulsion solvent evaporation and characterised using DLS, SEM, DSC, FTIR and in-vitro release. Lutein-uptake in SK-N-BE(2) cells was determined using flow-cytometry, confocal-microscopy and HPLC. Control was lutein PLGA nanoparticles. RESULTS The size of lutein-loaded PLGA and PLGA-PEG-FOLATE nanoparticles were 189.6 ± 18.79 nm and 188.0 ± 4.06 nm, respectively. Lutein entrapment was ∼61%(w/w) and ∼73%(w/w) for PLGA and PLGA-PEG-FOLATE nanoparticles, respectively. DSC and FTIR confirmed encapsulation of lutein into nanoparticles. Cellular uptake studies showed ∼1.6 and ∼2-fold enhanced uptake of lutein from PLGA-PEG-FOLATE nanoparticles compared to PLGA nanoparticles and lutein, respectively. Cumulative release of lutein was higher in PLGA nanoparticles (100% (w/w) within 24 h) compared to PLGA-PEG-FOLATE nanoparticles (∼80% (w/w) in 48 h). CONCLUSION Lutein-loaded PLGA-PEG-FOLATE nanoparticles could be a potential treatment for hypoxic ischaemic encephalopathy.
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Affiliation(s)
- Pradeep Kumar Bolla
- Department of Biomedical Engineering, College of Engineering, The University of Texas at El Paso, El Paso, TX, USA.,Department of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC, USA
| | - Vrinda Gote
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri, Kansas City, MO, USA
| | - Mahima Singh
- Department of Pharmaceutical Sciences, University of the Sciences in Philadelphia, Philadelphia, PA, USA
| | - Venkata Kashyap Yellepeddi
- Division of Clinical Pharmacology, Department of Paediatrics, University of UTAH, Salt Lake City, UT, USA.,Department of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, University of Utah, Salt Lake City, UT, USA
| | - Manan Patel
- Department of Pharmaceutical Sciences, University of the Sciences in Philadelphia, Philadelphia, PA, USA
| | - Dhananjay Pal
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri, Kansas City, MO, USA
| | - Xiaoming Gong
- Division of Neonatology, Department of Paediatrics, Texas Tech University Health Sciences Centre, El Paso, TX, USA
| | - Devaraj Sambalingam
- Division of Neonatology, Department of Paediatrics, Texas Tech University Health Sciences Centre, El Paso, TX, USA
| | - Jwala Renukuntla
- Department of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC, USA
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Makhathini SS, Omolo CA, Gannimani R, Mocktar C, Govender T. pH-Responsive Micelles From an Oleic Acid Tail and Propionic Acid Heads Dendritic Amphiphile for the Delivery of Antibiotics. J Pharm Sci 2020; 109:2594-2606. [PMID: 32473209 DOI: 10.1016/j.xphs.2020.05.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/27/2020] [Accepted: 05/11/2020] [Indexed: 10/24/2022]
Abstract
The aim of this study was to synthesize a novel biocompatible pH-responsive oleic acid-based dendritic lipid amphiphile (OLA-SPDA) which self-assembled into stable micelles (OLA-SPDA -micelles) with a relatively low critical micelle concentration (CMC) of 5.6 × 10-6 M. The formulated micelles had particle size, polydispersity index (PDI) and zeta potential (ZP) of 84.16 ± 0.184 nm, 0.199 ± 0.011 and -42.6 ± 1.98 mV, respectively, at pH 7.4. The vancomycin (VCM) encapsulation efficiency was 78.80 ± 3.26%. The micelles demonstrated pH-responsiveness with an increase in particle size to 141.1 ± 0.0707 nm and a much faster release profile at pH 6.0, as compared to pH 7.4. The minimum inhibitory concentration (MIC) of VCM-OLA-SPDA-micelle against methicillin-resistant staphylococcus aureus (MRSA) was 8-fold lower compared to bare VCM, and the formulation had a 4-fold lower MIC at pH 6.0 when compared to the formulation's MIC at pH 7.4. MRSA viability assay showed the micelles had a percentage killing of 93.39% when compared bare-VCM (58.21%) at the same MIC (0.98 μg/mL). In vivo mice (BALB/c) skin infection models showed an 8-fold reduction in MRSA burden after treatment with VCM-OLA-SPDA-micelles when compared with bare VCM. The above results suggest that pH-responsive VCM-OLA-SPDA-micelles has the potential to be an effective carrier to enhance therapeutic outcomes against infections characterised by low pH.
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Affiliation(s)
- Sifiso S Makhathini
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Calvin A Omolo
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa; School of Pharmacy and Health Sciences, United States International University of Africa, Nairobi, Kenya.
| | - Ramesh Gannimani
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
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Preparation of solid lipid nanoparticles of furosemide-silver complex and evaluation of antibacterial activity. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2018.10.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Tailoring microstructural, drug release properties, and antichagasic efficacy of biocompatible oil-in-water benznidazol-loaded nanoemulsions. Int J Pharm 2018; 555:36-48. [PMID: 30448310 DOI: 10.1016/j.ijpharm.2018.11.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/12/2018] [Accepted: 11/15/2018] [Indexed: 12/25/2022]
Abstract
This study explored the transition of lamellar-type liquid crystal (LLC) to biocompatible oil-in-water nanoemulsions able to modify benznidazole (BNZ) release and target the drug to cells infected with the T. cruzi parasite. Three cosolvents (2methylpyrrolidone [NMP], polyethylene glycol [POL], and propylene glycol [PRO] were tested to induce the transition of anisotropic LLC systems to isotropic nanoemulsions. Mixtures of soy phosphatidylcholine with sodium oleate stabilized the dispersions of medium chain triglyceride in water. Rheological measurements, polarized microscopy, and small angle X-ray scattering demonstrated that there is a phase transition from LLC to desired nanoemulsions. These small and narrow droplet-sized nanocarriers exhibited some advantages and promising features, such as the enhanced BNZ aqueous solubility and slow drug release rate. In vitro cell biocompatibility of formulations was assessed in the Vero E6 and SiHa cell lines. Drug-loaded nanoemulsions inhibited the epimastigote growth of the T. cruzi parasite (IC50 0.208 ± 0.052 μg mL-1) and reduced its infective life form trypomastigote (IC50 0.392 ± 0.107 μg mL-1). The oil-in-water nanoemulsions were demonstrated as promising biocompatible liquid drug delivery systems capable of improving the BNZ trypanocidal activity for the treatment of Chagas disease.
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Chang J, Yoo S, Lee W, Kim D, Kang T. Spontaneous Phase Transfer-Mediated Selective Removal of Heavy Metal Ions Using Biocompatible Oleic Acid. Sci Rep 2017; 7:16727. [PMID: 29196737 PMCID: PMC5711890 DOI: 10.1038/s41598-017-17092-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/21/2017] [Indexed: 11/13/2022] Open
Abstract
Here, we propose an environmentally benign removal technique for heavy metal ions based on selective and spontaneous transfer to oleic acid. The ions can be removed via (1) the selective and rapid complexation with the carboxylic end of oleic acid at an oleic acid/water interface, and (2) the diffusion of such complex into the oleic acid layer. A wide variety of heavy metal ions such as Cu2+, Pb2+, Zn2+, and Ni2+ can be selectively removed over K+ and Na+. For example, the concentration of Cu2+ is reduced to below 1.3 ppm within 24 h, which corresponds to the level of Cu2+ permitted by the Environmental Protection Agency. The addition of ethylenediamine ligand to the metal ion solutions is also shown to enhance the phase transfer. The removal efficiency is increased by up to 6 times when compared with that in the absence of the ligand and follows the order, Cu2+ (99%) > Pb2+ (96%) > Zn2+ (95%) > Ni2+ (65%). Moreover, the removal time can be shortened from 24 h to 1 h. The effect of an emulsion induced by a mechanical agitation on the removal of heavy metal ion is also studied.
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Affiliation(s)
- Jeehan Chang
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Korea
| | - Sooyeon Yoo
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Korea
| | - Wooju Lee
- Department of Mechanical Engineering, Sogang University, Seoul, 04107, Korea
| | - Dongchoul Kim
- Department of Mechanical Engineering, Sogang University, Seoul, 04107, Korea
| | - Taewook Kang
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Korea.
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pH-responsive chitosan nanoparticles from a novel twin-chain anionic amphiphile for controlled and targeted delivery of vancomycin. Colloids Surf B Biointerfaces 2017; 158:650-657. [DOI: 10.1016/j.colsurfb.2017.07.049] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/23/2017] [Accepted: 07/21/2017] [Indexed: 12/27/2022]
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13
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Kalhapure RS, Sikwal DR, Rambharose S, Mocktar C, Singh S, Bester L, Oh JK, Renukuntla J, Govender T. Enhancing targeted antibiotic therapy via pH responsive solid lipid nanoparticles from an acid cleavable lipid. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2067-2077. [DOI: 10.1016/j.nano.2017.04.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 04/01/2017] [Accepted: 04/11/2017] [Indexed: 02/07/2023]
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14
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Expeditious Synthesis of Dianionic-Headed 4-Sulfoalkanoic Acid Surfactants. MOLECULES (BASEL, SWITZERLAND) 2017; 22:molecules22040640. [PMID: 28420159 PMCID: PMC6154584 DOI: 10.3390/molecules22040640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 11/29/2022]
Abstract
4-Sulfoalkanoic acids are a class of important dianionic-headed surfactants. Various 4-sulfoalkanoic acids with straight C8, C10, C12, C14, C16, and C18 chains were synthesized expeditiously through the radical addition of methyl 2-((ethoxycarbonothioyl)thio)acetate to linear terminal olefins and subsequent oxidation with peroxyformic acid. This is a useful and convenient strategy for the synthesis of dianionic-headed surfactants with a carboxylic acid and sulfonic acid functionalities in the head group region.
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Sikwal DR, Kalhapure RS, Jadhav M, Rambharose S, Mocktar C, Govender T. Non-ionic self-assembling amphiphilic polyester dendrimers as new drug delivery excipients. RSC Adv 2017. [DOI: 10.1039/c6ra28100a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Solubility enhancement of poorly soluble antibiotics via self-assembling nano systems could be a promising approach to effectively treat bacterial infections in the current scenario of evolving resistant species.
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Affiliation(s)
- Dhiraj R. Sikwal
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Rahul S. Kalhapure
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Mahantesh Jadhav
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Sanjeev Rambharose
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
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Sikwal DR, Kalhapure RS, Rambharose S, Vepuri S, Soliman M, Mocktar C, Govender T. Polyelectrolyte complex of vancomycin as a nanoantibiotic: Preparation, in vitro and in silico studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:489-98. [DOI: 10.1016/j.msec.2016.03.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 02/17/2016] [Accepted: 03/06/2016] [Indexed: 11/16/2022]
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Srinivas R, Satterlee A, Wang Y, Zhang Y, Wang Y, Huang L. Theranostic etoposide phosphate/indium nanoparticles for cancer therapy and imaging. NANOSCALE 2015; 7:18542-18551. [PMID: 26489694 PMCID: PMC4670036 DOI: 10.1039/c5nr04509f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Etoposide phosphate (EP), a water-soluble anticancer prodrug, is widely used for treatment of many cancers. After administration it is rapidly converted to etoposide, its parent compound, which exhibits anticancer activity. Difficulty in parenteral administration necessitates the development of a suitable nanoparticle delivery system for EP. Here we have used indium both as a carrier to deliver etoposide phosphate to tumor cells and as a SPECT imaging agent through incorporation of (111)In. Etoposide phosphate was successfully encapsulated together with indium in nanoparticles, and exhibited dose dependent cytotoxicity and induction of apoptosis in cultured H460 cancer cells via G2/M cell cycle arrest. In a mouse xenograft lung cancer model, etoposide phosphate/indium nanoparticles induce tumor cell apoptosis, leading to significant enhancement of tumor growth inhibition compared to the free drug.
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Affiliation(s)
- Ramishetti Srinivas
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Andrew Satterlee
- UNC and NCSU Joint Department of Biomedical Engineering, Chapel Hill, NC 27599
| | - Yuhua Wang
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Yuan Zhang
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Yongjun Wang
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Leaf Huang
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- UNC and NCSU Joint Department of Biomedical Engineering, Chapel Hill, NC 27599
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Kalhapure RS, Sonawane SJ, Sikwal DR, Jadhav M, Rambharose S, Mocktar C, Govender T. Solid lipid nanoparticles of clotrimazole silver complex: An efficient nano antibacterial against Staphylococcus aureus and MRSA. Colloids Surf B Biointerfaces 2015; 136:651-8. [PMID: 26492156 DOI: 10.1016/j.colsurfb.2015.10.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/25/2015] [Accepted: 10/02/2015] [Indexed: 01/08/2023]
Abstract
New and effective strategies to transform current antimicrobials are required to address the increasing issue of microbial resistance and declining introduction of new antibiotic drugs. In this context, metal complexes of known drugs and nano delivery systems for antibiotics are proving to be promising strategies. The aim of the study was therefore to synthesize a silver complex of clotrimazole and formulate it into a nano delivery system for enhanced and sustained antibacterial activity against susceptible and resistant Staphylococcus aureus. A silver complex of clotrimazole was synthesized, characterized and further encapsulated into solid lipid nanoparticles to evaluate its antibacterial activity against S. aureus and methicillin-resistant S. aureus (MRSA). An in vitro cytotoxicity study was performed on HepG2 cell lines to assess the overall biosafety of the synthesized clotrimazole silver complex to mammalian cells, and was found to be non-toxic to mammalian cells (cell viability >80%). The minimum inhibitory concentrations (MIC) of clotrimazole and clotrimazole-silver were 31.25 and 9.76 μg/mL against S. aureus, and 31.25 and 15.62 against MRSA, respectively. Clotrimazole SLNs exhibited MIC values of 104 and 208 μg/mL against both MSSA and MRSA at the end of 18 and 36 h, respectively, but thereafter completely lost its antibacterial activity. Clotrimazole-silver SLNs had an MIC value of 52 μg/mL up to 54 h, after which the MIC value was 104 μg/mL against both strains at the end of 72 h. Thus, clotrimazole-silver SLNs was found to be an efficient nanoantibiotic.
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Affiliation(s)
- Rahul S Kalhapure
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Sandeep J Sonawane
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Dhiraj R Sikwal
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Mahantesh Jadhav
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Sanjeev Rambharose
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
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Synthesis, Characterization and Cytotoxicity Evaluation of an Oleic Acid Derived Novel Bicephalous Dianionic Surfactant. J SURFACTANTS DETERG 2015. [DOI: 10.1007/s11743-015-1678-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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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: 126] [Impact Index Per Article: 12.6] [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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Kalhapure RS, Akamanchi KG, Mocktar C, Govender T. Synthesis and Antibacterial Activity of Silver Nanoparticles Capped with a Carboxylic Acid-terminated Generation 1 Oleodendrimer. CHEM LETT 2014. [DOI: 10.1246/cl.140151] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rahul S. Kalhapure
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal
| | | | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal
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Ojewole E, Kalhapure R, Akamanchi K, Govender T. Novel oleic acid derivatives enhance buccal permeation of didanosine. Drug Dev Ind Pharm 2014; 40:657-68. [PMID: 24592892 DOI: 10.3109/03639045.2014.892958] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The aim of this study was to explore the potential of novel oleic acid (OA) derivatives as buccal permeation enhancers for the delivery of didanosine (ddI). The OA derivatives, i.e. ester derivative (OA1E), the dicarboxylic acid derivative (OA1A) and the bicephalous dianionic surfactant (OA1ANa) were synthesized and their effects were compared to the parent OA. OA, OA1E, OA1A and OA1ANa at 1% w/w all showed potential for enhancing the buccal permeability of ddI with enhancement ratio (ER) of 1.29, 1.33, 1.01 and 1.72, respectively. OA1ANa at 1% w/w demonstrated the highest flux (80.30 ± 10.37 µg cm(-2 )h), permeability coefficient (4.01 ± 0.57 × 10(-3) cm h(-1)) and ER (1.72). The highest flux for ddI (144.00 ± 53.54 µg cm(-2 )h) was reported with OA1ANa 2% w/w, which displayed an ER of 3.09 more than that with ddI alone. At equivalent concentrations, OA1ANa (ER = 3.09) had a significantly higher permeation-enhancing effect than its parent OA (ER = 1.54). Histomorphological studies confirmed that OA1ANa at all concentrations (0.5, 2.0 and 6.0% w/w) had no adverse effects on the mucosae. Morphological changes such as vacuoles formation and increased intercellular spaces were attributed to the buccal permeation-enhancing effect of OA1ANa. This study demonstrated the potential of novel OA derivatives as buccal permeation enhancers. OA1ANa at 2% w/w was also identified as the optimal novel OA derivative to widen the pool of fatty acid derivatives as chemical permeation enhancers for buccal drug delivery.
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Affiliation(s)
- Elizabeth Ojewole
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal , Durban, KwaZulu-Natal , South Africa and
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Gemini surfactants from natural amino acids. Adv Colloid Interface Sci 2014; 205:134-55. [PMID: 24238395 DOI: 10.1016/j.cis.2013.10.020] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 10/15/2013] [Accepted: 10/15/2013] [Indexed: 11/23/2022]
Abstract
In this review, we report the most important contributions in the structure, synthesis, physicochemical (surface adsorption, aggregation and phase behaviour) and biological properties (toxicity, antimicrobial activity and biodegradation) of Gemini natural amino acid-based surfactants, and some potential applications, with an emphasis on the use of these surfactants as non-viral delivery system agents. Gemini surfactants derived from basic (Arg, Lys), neutral (Ser, Ala, Sar), acid (Asp) and sulphur containing amino acids (Cys) as polar head groups, and Geminis with amino acids/peptides in the spacer chain are reviewed.
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