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Paosupap J, Basit A, Sajomsang W, Nalinbejapun S, Sripetthong S, Ovatlarnporn C. Evaluation of the antifungal properties of nanoliposomes containing rhinacanthin-C isolated from the leaves of Rhinacanthus nasutus. World J Microbiol Biotechnol 2024; 40:129. [PMID: 38459287 DOI: 10.1007/s11274-024-03916-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/01/2024] [Indexed: 03/10/2024]
Abstract
Fungal infections represent a challenging threat to the human health. Microsporum gypseum and Trichophyton rubrum are pathogenic fungi causing various topical mycoses in humans. The globally emerging issue of resistance to fungi demands the development of novel therapeutic strategies. In this context, the application of nanoliposomes as vehicles for carrying active therapeutic agents can be a suitable alternative. In this study, rhinacanthin-C was isolated from Rhinacanthus naustus and encapsulated in nano-liposomal formulations, which were prepared by the modified ethanol injection method. The two best formulations composed of soybean phosphatidylcholine (SPC), cholesterol (CHL), and tween 80 (T80) in a molar ratio of 1:1:0 (F1) and 1:1:0.5 (F2) were proceeded for experimentation. The physical characteristics and antifungal activities were performed and compared with solutions of rhinacanthin-C. The rhinacanthin-C encapsulating efficiencies in F1 and F2 were 94.69 ± 1.20% and 84.94 ± 1.32%, respectively. The particle sizes were found to be about 221.4 ± 13.76 nm (F1) and 115.8 ± 23.33 nm (F2), and zeta potential values of -38.16 mV (F1) and -40.98 mV (F2). Similarly, the stability studies of rhinacanthin-C in liposomes demonstrated that rhinacanthin-C in both formulations was more stable in mediums with pH of 4.0 and 6.6 than pure rhinacanthin-C when stored at the same conditions. Rhinacanthin-C in F1 was slightly more stable than F2 when stored in mediums with a pH of 10.0 after three months of storage. However, rhinacanthin-C in both formulations was less stable than pure rhinacanthin-C in a basic medium of pH 10.0. The antifungal potential was evaluated against M. gypsum and T. rubrum. The findings revealed a comparatively higher zone of inhibition for F1. In the MIC study, SPC: CHL: T80 showed higher inhibition against M. gypseum and a slightly higher inhibition against T. rubrum compared to free rhinacanthin-C solution. Moreover, rhinacanthin-C showed significant interaction against 14α-demethylase in in silico study. Overall, this study demonstrates that nanoliposomes containing rhinacanthin-C can improve the stability and antifungal potential of rhinacanthin-C with sustained and prolonged duration of action and could be a promising vehicle for delivery of active ingredients for targeting various fungal infections.
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Affiliation(s)
- Jirasak Paosupap
- Department of Research and Development, Able Medical Company Limited, Chiang Yuen, Mahasarakham 44160, Thailand
| | - Abdul Basit
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand.
- Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand.
| | - Warayuth Sajomsang
- Nano-Encapsulation Units, National Nanotechnology Center, National Science and Technology Development Agency, Pathumthani, 12120, Thailand
| | - Sirinporn Nalinbejapun
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
- Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Sasikarn Sripetthong
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
- Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Chitchamai Ovatlarnporn
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand.
- Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand.
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Castangia I, Fulgheri F, Leyva-Jimenez FJ, Alañón ME, Cádiz-Gurrea MDLL, Marongiu F, Meloni MC, Aroffu M, Perra M, Allaw M, Abi Rached R, Oliver-Simancas R, Escribano Ferrer E, Asunis F, Manca ML, Manconi M. From Grape By-Products to Enriched Yogurt Containing Pomace Extract Loaded in Nanotechnological Nutriosomes Tailored for Promoting Gastro-Intestinal Wellness. Antioxidants (Basel) 2023; 12:1285. [PMID: 37372015 DOI: 10.3390/antiox12061285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Grape pomace is the main by-product generated during the winemaking process; since it is still rich in bioactive molecules, especially phenolic compounds with high antioxidant power, its transformation in beneficial and health-promoting foods is an innovative challenge to extend the grape life cycle. Hence, in this work, the phytochemicals still contained in the grape pomace were recovered by an enhanced ultrasound assisted extraction. The extract was incorporated in liposomes prepared with soy lecithin and in nutriosomes obtained combining soy lecithin and Nutriose FM06®, which were further enriched with gelatin (gelatin-liposomes and gelatin-nutriosomes) to increase the samples' stability in modulated pH values, as they were designed for yogurt fortification. The vesicles were sized ~100 nm, homogeneously dispersed (polydispersity index < 0.2) and maintained their characteristics when dispersed in fluids at different pH values (6.75, 1.20 and 7.00), simulating salivary, gastric and intestinal environments. The extract loaded vesicles were biocompatible and effectively protected Caco-2 cells against oxidative stress caused by hydrogen peroxide, to a better extent than the free extract in dispersion. The structural integrity of gelatin-nutriosomes, after dilution with milk whey was confirmed, and the addition of vesicles to the yogurt did not modify its appearance. The results pointed out the promising suitability of vesicles loading the phytocomplex obtained from the grape by-product to enrich the yogurt, offering a new and easy strategy for healthy and nutritional food development.
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Affiliation(s)
- Ines Castangia
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Federica Fulgheri
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Francisco Javier Leyva-Jimenez
- Regional Institute for Applied Scientific Research (IRICA), University of Castilla-La Mancha, Avda. Camilo José Cela 10, 13071 Ciudad Real, Spain
- Department of Analytical Chemistry and Food Science and Technology, University of Castilla-La Mancha, Ronda de Calatrava 7, 13071 Ciudad Real, Spain
| | - Maria Elena Alañón
- Regional Institute for Applied Scientific Research (IRICA), University of Castilla-La Mancha, Avda. Camilo José Cela 10, 13071 Ciudad Real, Spain
- Department of Analytical Chemistry and Food Science and Technology, University of Castilla-La Mancha, Ronda de Calatrava 7, 13071 Ciudad Real, Spain
| | | | - Francesca Marongiu
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Maria Cristina Meloni
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Matteo Aroffu
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Matteo Perra
- Biomedical and Tissue Engineering Laboratory, Fundación de Investigación Hospital General Universitario, 46022 Valencia, Spain
| | - Mohamad Allaw
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Rita Abi Rached
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Rodrigo Oliver-Simancas
- Regional Institute for Applied Scientific Research (IRICA), University of Castilla-La Mancha, Avda. Camilo José Cela 10, 13071 Ciudad Real, Spain
- Department of Analytical Chemistry and Food Science and Technology, University of Castilla-La Mancha, Ronda de Calatrava 7, 13071 Ciudad Real, Spain
| | - Elvira Escribano Ferrer
- Biopharmaceutics and Pharmacokinetics Unit, Institute for Nanoscience and Nanotechnology, University of Barcelona, 08028 Barcelona, Spain
| | - Fabiano Asunis
- Department of Civil, Environmental Engineering and Architecture (DICAAR), University of Cagliari, Piazza D'Armi 1, 09123 Cagliari, Italy
| | - Maria Letizia Manca
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
| | - Maria Manconi
- Department of Life and Environmental Sciences, University of Cagliari, University Campus, Pad. A, S.P. Monserrato-Sestu Km 0.700, 09042 Monserrato, CA, Italy
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Manconi M, Rezvani M, Manca ML, Escribano-Ferrer E, Fais S, Orrù G, Lammers T, Asunis F, Muntoni A, Spiga D, De Gioannis G. Bridging biotechnology and nanomedicine to produce biogreen whey-nanovesicles for intestinal health promotion. Int J Pharm 2023; 633:122631. [PMID: 36690128 DOI: 10.1016/j.ijpharm.2023.122631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/14/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
New intestinal health-promoting biotechnological nanovesicles were manufactured by combining the main environmental pollutant generated from the cheese-making process, whey, with phospholipid, sodium hyaluronate and dextrin, thus overcoming environmental and medical challenges. An efficient, consolidated and eco-friendly preparation method was employed to manufacture the vesicles and the bioactive whey was obtained by mesophilic dark fermentation without external inoculum through a homolactic pathway, which was operated in such a way as to maximize the production of lactic acid. The biotechnological nutriosomes and hyalonutriosomes were relatively small (∼100 nm) and characterized by the net negative surface charge (>-30 mV). The addition of maltodextrin to the liposomes and especially to the hyalurosomes significantly stabilized the vesicles under acidic conditions, simulating the gastric environment, as their size and polydispersity index were significantly lower (p < 0.05) than those of the other formulations. The vesicles were effectively internalized by Caco-2 cells and protected them against oxidative stress. Nutriosomes promoted the proliferation of Streptococcus salivarius, a human commensal bacterium, to a better extent (p < 0.05) than liposomes and hyalurosomes, as a function of the concentration tested. These findings could open a new horizon in intestinal protection and health promotion by integrating biotechnology, nanomedicine, sustainability principles and bio-circular economy.
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Affiliation(s)
- Maria Manconi
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
| | - Maryam Rezvani
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy; Department of Food Science and Technology, College of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Maria Letizia Manca
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
| | - Elvira Escribano-Ferrer
- Biopharmaceutics and Pharmacokinetics Unit, Institute for Nanoscience and Nanotechnology, University of Barcelona, Barcelona, Spain
| | - Sara Fais
- Department of Surgical Science, Molecular Biology Service Lab (MBS), University of Cagliari, Via Ospedale 40, 09124 Cagliari, Italy
| | - Germano Orrù
- Department of Surgical Science, Molecular Biology Service Lab (MBS), University of Cagliari, Via Ospedale 40, 09124 Cagliari, Italy
| | - Twan Lammers
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Fabiano Asunis
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Piazza d'Armi, 09123, Cagliari, Italy
| | - Aldo Muntoni
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Piazza d'Armi, 09123, Cagliari, Italy; National Research Council of Italy (CNR), Institute of Environmental Geology and Geoengineering (IGAG), Piazza d'Armi 1, 09123 Cagliari, Italy
| | - Daniela Spiga
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Piazza d'Armi, 09123, Cagliari, Italy
| | - Giorgia De Gioannis
- Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Piazza d'Armi, 09123, Cagliari, Italy; National Research Council of Italy (CNR), Institute of Environmental Geology and Geoengineering (IGAG), Piazza d'Armi 1, 09123 Cagliari, Italy
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Manconi M, Manca ML, Valenti D, Escribano E, Hillaireau H, Fadda AM, Fattal E. Chitosan and hyaluronan coated liposomes for pulmonary administration of curcumin. Int J Pharm 2017; 525:203-210. [DOI: 10.1016/j.ijpharm.2017.04.044] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/11/2017] [Accepted: 04/18/2017] [Indexed: 11/30/2022]
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Potential and future scope of nanoemulgel formulation for topical delivery of lipophilic drugs. Int J Pharm 2017; 526:353-365. [PMID: 28461261 DOI: 10.1016/j.ijpharm.2017.04.068] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/26/2017] [Accepted: 04/27/2017] [Indexed: 11/21/2022]
Abstract
The Nanoemulgel drug delivery system is a formulation related intervention to improve the systemic delivery and therapeutic profile of lipophilic drugs. Nanoemulgel is an amalgamated formulation of two different systems in which nanoemulsion containing drug is incorporated into a gel base. The fusion of the two systems makes this formulation advantageous in several ways. Lipophilic drugs can be easily incorporated and the skin permeability of the incorporated drugs can be enhanced in several folds due to the finely distributed droplets of nanoemulsion phase. As a result, the pharmacokinetic and pharmacodynamic profiles of the lipophilic drugs are improved significantly. An increasing trend in topical nanoemulgel use in recent years has been noticed because of the better acceptability of the preparation to the patients due to their noninvasive delivery, avoidance of gastrointestinal side effects, easier applicability and good therapeutic and safety profile. Despite of having few limitations, nanoemulgel formulation can be considered as a potential and promising candidates for topical delivery of lipophilic drugs in the future. The aim of this review is to evaluate and report the current potential and future scope of nanoemulgel formulation for becoming an effective delivery system for poorly water soluble drugs. In this review, we have summarized and discussed the outcome of different studies on permeability, pharmacokinetic, pharmacodynamic and safety profile of the drugs delivered topically through nanoemulgel. Rationality of use along with the major challenges to overcome for nanoemulgel formulation has been discussed.
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Vitonyte J, Manca ML, Caddeo C, Valenti D, Peris JE, Usach I, Nacher A, Matos M, Gutiérrez G, Orrù G, Fernàndez-Busquets X, Fadda AM, Manconi M. Bifunctional viscous nanovesicles co-loaded with resveratrol and gallic acid for skin protection against microbial and oxidative injuries. Eur J Pharm Biopharm 2017; 114:278-287. [PMID: 28192250 DOI: 10.1016/j.ejpb.2017.02.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 02/01/2017] [Accepted: 02/08/2017] [Indexed: 11/25/2022]
Abstract
Resveratrol and gallic acid were co-loaded in phospholipid vesicles aiming at protecting the skin from external injuries, such as oxidative stress and microbial infections. Liposomes were prepared using biocompatible phospholipids dispersed in water. To improve vesicle stability and applicability, the phospholipids and the phenols were dispersed in water/propylene glycol or water/glycerol, thus obtaining PEVs and glycerosomes, respectively. The vesicles were characterized by size, morphology, physical stability, and their therapeutic efficacy was investigated in vitro. The vesicles were spherical, unilamellar and small in size: liposomes and glycerosomes were around 70nm in diameter, while PEVs were larger (∼170nm). The presence of propylene glycol or glycerol increased the viscosity of the vesicle systems, positively affecting their stability. The ability of the vesicles to promote the accumulation of the phenols (especially gallic acid) in the skin was demonstrated, as well as their low toxicity and great ability to protect keratinocytes and fibroblasts from oxidative damage. Additionally, an improvement of the antimicrobial activity of the phenols was shown against different skin pathogens. The co-loading of resveratrol and gallic acid in modified phospholipid vesicles represents an innovative, bifunctional tool for preventing and treating skin affections.
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Affiliation(s)
- Justina Vitonyte
- Dept. of Clinical Pharmacy, Lithuanian University of Health Sciences, Sukileliu pr. 13, Kaunas, Lithuania
| | - Maria Letizia Manca
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
| | - Carla Caddeo
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy.
| | - Donatella Valenti
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
| | - Josè Esteban Peris
- Dept. of Pharmacy and Pharmaceutical Technology, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia, Spain
| | - Iris Usach
- Dept. of Pharmacy and Pharmaceutical Technology, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia, Spain
| | - Amparo Nacher
- Dept. of Pharmacy and Pharmaceutical Technology, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia, Spain; Instituto de Reconocimiento Molecular y Desarrollo Tecnológico, Centro Mixto Universidad Politécnica de Valencia-Universidad de Valencia, Spain
| | - Maria Matos
- Dept. Ingeniería Química y Tecnología del Medio Ambiente, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Gemma Gutiérrez
- Dept. Ingeniería Química y Tecnología del Medio Ambiente, University of Oviedo, C/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Germano Orrù
- Dept. of Surgical Science, University of Cagliari, Molecular Biology Service Lab (MBS), via Ospedale 40, 09124 Cagliari, Italy
| | - Xavier Fernàndez-Busquets
- Nanomalaria Group, Institute for Bioengineering of Catalonia (IBEC), Baldiri Reixac 10-12, Barcelona E08028, Spain; Barcelona Institute for Global Health (ISGlobal), Barcelona Centre for International Health Research (CRESIB, Hospital Clínic-Universitat de Barcelona), Rosselló 149-153, Barcelona E08036, Spain
| | - Anna Maria Fadda
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
| | - Maria Manconi
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
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Desmet CM, Lafosse A, Vériter S, Porporato PE, Sonveaux P, Dufrane D, Levêque P, Gallez B. Application of Electron Paramagnetic Resonance (EPR) Oximetry to Monitor Oxygen in Wounds in Diabetic Models. PLoS One 2015; 10:e0144914. [PMID: 26659378 PMCID: PMC4679295 DOI: 10.1371/journal.pone.0144914] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 11/26/2015] [Indexed: 11/18/2022] Open
Abstract
A lack of oxygen is classically described as a major cause of impaired wound healing in diabetic patients. Even if the role of oxygen in the wound healing process is well recognized, measurement of oxygen levels in a wound remains challenging. The purpose of the present study was to assess the value of electron paramagnetic resonance (EPR) oximetry to monitor pO2 in wounds during the healing process in diabetic mouse models. Kinetics of wound closure were carried out in streptozotocin (STZ)-treated and db/db mice. The pO2 was followed repeatedly during the healing process by 1 GHz EPR spectroscopy with lithium phthalocyanine (LiPc) crystals used as oxygen sensor in two different wound models: a full-thickness excisional skin wound and a pedicled skin flap. Wound closure kinetics were dramatically slower in 12-week-old db/db compared to control (db/+) mice, whereas kinetics were not statistically different in STZ-treated compared to control mice. At the center of excisional wounds, measurements were highly influenced by atmospheric oxygen early in the healing process. In pedicled flaps, hypoxia was observed early after wounding. While reoxygenation occurred over time in db/+ mice, hypoxia was prolonged in the diabetic db/db model. This observation was consistent with impaired healing and microangiopathies observed using intravital microscopy. In conclusion, EPR oximetry using LiPc crystals as the oxygen sensor is an appropriate technique to follow wound oxygenation in acute and chronic wounds, in normal and diabetic animals. Nevertheless, the technique is limited for measurements in pedicled skin flaps and cannot be applied to excisional wounds in which diffusion of atmospheric oxygen significantly affects the measurements.
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Affiliation(s)
- Céline M. Desmet
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Aurore Lafosse
- Endocrine Cell Therapy Unit, Center of Tissue/Cell Therapy, Institut de Recherche Expérimentale et Clinique, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
- Plastic and Reconstructive Surgery Unit, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Sophie Vériter
- Endocrine Cell Therapy Unit, Center of Tissue/Cell Therapy, Institut de Recherche Expérimentale et Clinique, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Paolo E. Porporato
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
| | - Pierre Sonveaux
- Pole of Pharmacology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
| | - Denis Dufrane
- Endocrine Cell Therapy Unit, Center of Tissue/Cell Therapy, Institut de Recherche Expérimentale et Clinique, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Philippe Levêque
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Bernard Gallez
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
- * E-mail:
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Manca ML, Castangia I, Zaru M, Nácher A, Valenti D, Fernàndez-Busquets X, Fadda AM, Manconi M. Development of curcumin loaded sodium hyaluronate immobilized vesicles (hyalurosomes) and their potential on skin inflammation and wound restoring. Biomaterials 2015; 71:100-109. [PMID: 26321058 DOI: 10.1016/j.biomaterials.2015.08.034] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/08/2015] [Accepted: 08/14/2015] [Indexed: 02/02/2023]
Abstract
In the present work new highly biocompatible nanovesicles were developed using polyanion sodium hyaluronate to form polymer immobilized vesicles, so called hyalurosomes. Curcumin, at high concentration was loaded into hyalurosomes and physico-chemical properties and in vitro/in vivo performances of the formulations were compared to those of liposomes having the same lipid and drug content. Vesicles were prepared by direct addition of dispersion containing the polysaccharide sodium hyaluronate and the polyphenol curcumin to a commercial mixture of soy phospholipids, thus avoiding the use of organic solvents. An extensive study was carried out on the physico-chemical features and properties of curcumin-loaded hyalurosomes and liposomes. Cryogenic transmission electron microscopy and small-angle X-ray scattering showed that vesicles were spherical, uni- or oligolamellar and small in size (112-220 nm). The in vitro percutaneous curcumin delivery studies on intact skin showed an improved ability of hyalurosomes to favour a fast drug deposition in the whole skin. Hyalurosomes as well as liposomes were biocompatible, protected in vitro human keratinocytes from oxidative stress damages and promoted tissue remodelling through cellular proliferation and migration. Moreover, in vivo tests underlined a good effectiveness of curcumin-loaded hyalurosomes to counteract 12-O-tetradecanoilphorbol (TPA)-produced inflammation and injuries, diminishing oedema formation, myeloperoxydase activity and providing an extensive skin reepithelization. Thanks to the one-step and environmentally-friendly preparation method, component biocompatibility and safety, good in vitro and in vivo performances, the hyalurosomes appear as promising nanocarriers for cosmetic and pharmaceutical applications.
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Affiliation(s)
- M L Manca
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124, Cagliari, Italy
| | - I Castangia
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124, Cagliari, Italy
| | - M Zaru
- Instituto de Reconocimiento Molecular y Desarrollo Tecnológico, Centro Mixto Universidad Politécnica de Valencia-Universidad de Valencia, Spain
| | - A Nácher
- Icnoderm Srl, Sardegna Ricerche Ed.5, Pula, Cagliari, 09010, Italy; Dept. of Pharmacy and Pharmaceutical Technology, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia, Spain
| | - D Valenti
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124, Cagliari, Italy
| | - X Fernàndez-Busquets
- Nanomalaria Unit, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain; Barcelona Institute for Global Health (ISGlobal, Hospital Clínic-Universitat de Barcelona), Spain; Nanoscience and Nanotechnology Institute (IN2UB), University of Barcelona, Spain
| | - A M Fadda
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124, Cagliari, Italy
| | - M Manconi
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Via Ospedale 72, 09124, Cagliari, Italy.
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How perifosine affects liposome-encapsulated drug delivery across a cell barrier. Ther Deliv 2015; 6:423-41. [PMID: 25996042 DOI: 10.4155/tde.14.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The development of efficient drug delivery systems to transport therapeutics across barrier-forming cells remains a challenge. Recently it was shown that liposomes containing perifosine, a synthetic analog of lysophosphatidylcholine, efficiently deliver liposome encapsulated content across barrier-forming cells. METHODS To elucidate the mechanism of the delivery, fluorescent and spin labeled analog of perifosine were synthesized and their transport from liposomes to the barrier-forming MDKC cells was measured. RESULTS & CONCLUSION Perifosine analogs are rapidly transported from liposomes into cell membranes. The total amount of perifosine accumulated in plasma membranes seems to be the most important factor in efficient transepithelial transport of liposome-encapsulated substances. Lysolipid-containing liposomal formulations seem to be promising candidates as drug delivery systems in general.
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Caddeo C, Valenti D, Nácher A, Manconi M, Fadda AM. Exploring the co-loading of lidocaine chemical forms in surfactant/phospholipid vesicles for improved skin delivery. J Pharm Pharmacol 2015; 67:909-17. [PMID: 25648182 DOI: 10.1111/jphp.12385] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 12/21/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The present study was aimed at targeting the skin to deliver lidocaine loaded in surfactant/phospholipid vesicles tailored for improved local delivery. The influence of different formulation parameters was explored to maximise drug efficacy. METHODS The vesicles were prepared using a mixture of soy lipids (Phospholipon 50) and a surfactant with penetration-enhancing properties (Oramix CG110, Labrasol, Labrafac PG or Labrafac CC), and loaded with lidocaine. The formulations were analysed in detail by cryo-TEM, SAXS, Turbiscan Lab, and tested in permeation experiments through new born pig skin, as a function of the chemical form and concentration of lidocaine (i.e. free base or salt, 12.5 or 25 mg/ml). KEY FINDINGS Small, spherical vesicles with good entrapment efficiency and exceptional long-term stability were produced. The lamellar organisation was affected by either the surfactant or the lidocaine form used. Permeation studies highlighted that the co-incorporation of lidocaine base + hydrochloride allowed the achievement of a superior deposition in the skin layers, especially when surfactant vesicles were used, as their content was presumably saturated with the maximum amount of loadable anaesthetic. CONCLUSIONS The proposed systems based on surfactant/phospholipid vesicles co-loaded with both lidocaine forms are an effective approach for improving its local delivery.
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Affiliation(s)
- Carla Caddeo
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
| | - Donatella Valenti
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
| | - Amparo Nácher
- Department of Pharmacy and Pharmaceutical Technology, University of Valencia, Valencia, Spain.,Instituto de Reconocimiento Molecular y Desarrollo Tecnológico, Centro Mixto Universidad Politécnica de Valencia-Universidad de Valencia, Valencia, Spain
| | - Maria Manconi
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
| | - Anna Maria Fadda
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
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Moulaoui K, Caddeo C, Manca ML, Castangia I, Valenti D, Escribano E, Atmani D, Fadda AM, Manconi M. Identification and nanoentrapment of polyphenolic phytocomplex from Fraxinus angustifolia: in vitro and in vivo wound healing potential. Eur J Med Chem 2014; 89:179-88. [PMID: 25462238 DOI: 10.1016/j.ejmech.2014.10.047] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 10/01/2014] [Accepted: 10/15/2014] [Indexed: 11/25/2022]
Abstract
The aim of the present study was to elucidate the polyphenolic composition of Fraxinus angustifolia leaf and bark extracts, and to evaluate their efficacy in wound healing. Quercetin, catechin, rutin and tannic acid were identified as the main components of the extracts. In order to improve their skin bioavailability, the polyphenolic phytocomplexes were incorporated in different nanovesicles, namely ethosomes and phospholipid vesicles containing Transcutol(®) P (Trc) or ethylene glycol (EG). The latter had never been used before as a component of phospholipid vesicles, and it was found to play a key role in improving extract efficacy in wound healing. Results of cryogenic transmission electron microscopy (cryo-TEM), Photon Correlation Spectroscopy (PCS) and Small-Angle X-ray Scattering (SAXS) showed that ethosomes and EG-PEVs were small, monodispersed, unilamellar vesicles, while Trc-PEVs were larger, less homogeneously dispersed and multilamellar, with a large bilayer thickness. Free extracts did not show relevant ability to protect in vitro human keratinocytes from H2O2 damages, while when entrapped in nanovesicles, they significantly inhibited H2O2 stress damages, probably related to a higher level of cell uptake. On the other hand, in vivo results showed that the highest antioxidant and anti-inflammatory effects were provided by the phytocomplexes in EG-PEVs, which favoured wound healing. Moreover, non-entrapped F. angustifolia extracts showed a marginal effect, comparable to that of free quercetin dispersion (control). In conclusion, our results depict that these extracts may find potential applications in biomedicine.
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Affiliation(s)
- Kenza Moulaoui
- Laboratory of Applied Biochemistry, Faculty of Life and Nature Science, University of Bejaia, Algeria
| | - Carla Caddeo
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Italy
| | | | - Ines Castangia
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Italy
| | - Donatella Valenti
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Italy
| | - Elvira Escribano
- Biopharmaceutics and Pharmacokinetics Unit, Institute for Nanoscience and Nanotechnology, University of Barcelona, Spain
| | - Djebbar Atmani
- Laboratory of Applied Biochemistry, Faculty of Life and Nature Science, University of Bejaia, Algeria
| | - Anna Maria Fadda
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Italy
| | - Maria Manconi
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Italy.
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Manca ML, Castangia I, Matricardi P, Lampis S, Fernàndez-Busquets X, Fadda AM, Manconi M. Molecular arrangements and interconnected bilayer formation induced by alcohol or polyalcohol in phospholipid vesicles. Colloids Surf B Biointerfaces 2014; 117:360-7. [DOI: 10.1016/j.colsurfb.2014.03.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 02/20/2014] [Accepted: 03/03/2014] [Indexed: 11/29/2022]
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Castangia I, Nácher A, Caddeo C, Valenti D, Fadda AM, Díez-Sales O, Ruiz-Saurí A, Manconi M. Fabrication of quercetin and curcumin bionanovesicles for the prevention and rapid regeneration of full-thickness skin defects on mice. Acta Biomater 2014; 10:1292-300. [PMID: 24239901 DOI: 10.1016/j.actbio.2013.11.005] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/16/2013] [Accepted: 11/08/2013] [Indexed: 12/17/2022]
Abstract
In the present work biocompatible quercetin and curcumin nanovesicles were developed as a novel approach to prevent and restore skin tissue defects on chronic cutaneous pathologies. Stable and suitable quercetin- and curcumin-loaded phospholipid vesicles, namely liposomes and penetration enhancer-containing vesicles (PEVs), were prepared. Vesicles were made from a highly biocompatible mixture of phospholipids and alternatively a natural polyphenol, quercetin or curcumin. Liposomes were obtained by adding water, while PEVs by adding polyethylene glycol 400 and Oramix®CG110 to the water phase. Transmission electron microscopy, cryogenic-transmission electron microscopy and small- and wide-angle X-ray scattering showed that vesicles were spherical, oligo- or multilamellar and small in size (112-220 nm). In vitro and in vivo tests underlined a good effectiveness of quercetin and curcumin nanovesicles in counteracting phorbol ester 12-O-tetradecanoylphorbol-13-acetate (TPA) induced lesions and inflammation. Myeloperoxydase activity, used to gauge inflammation, was markedly inhibited by quercetin liposomes (59%) and curcumin liposomes and polyethylene glycol (PEG)-PEVs (∼ 68%). Histology showed that PEG-PEVs provided an extensive re-epithelization of the TPA-damaged skin, with multiple layers of thick epidermis. In conclusion, nanoentrapped polyphenols prevented the formation of skin lesions abrogating the various biochemical processes that cause epithelial loss and skin damage.
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Castangia I, Manca ML, Matricardi P, Sinico C, Lampis S, Fernàndez-Busquets X, Fadda AM, Manconi M. Effect of diclofenac and glycol intercalation on structural assembly of phospholipid lamellar vesicles. Int J Pharm 2013; 456:1-9. [DOI: 10.1016/j.ijpharm.2013.08.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/08/2013] [Accepted: 08/12/2013] [Indexed: 11/16/2022]
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Huang CT, Tsai MJ, Lin YH, Fu YS, Huang YB, Tsai YH, Wu PC. Effect of microemulsions on transdermal delivery of citalopram: optimization studies using mixture design and response surface methodology. Int J Nanomedicine 2013; 8:2295-304. [PMID: 23919086 PMCID: PMC3699131 DOI: 10.2147/ijn.s43474] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to evaluate the potential of microemulsions as a drug vehicle for transdermal delivery of citalopram. A computerized statistical technique of response surface methodology with mixture design was used to investigate and optimize the influence of the formulation compositions including a mixture of Brij 30/Brij 35 surfactants (at a ratio of 4:1, 20%-30%), isopropyl alcohol (20%-30%), and distilled water (40%-50%) on the properties of the drug-loaded microemulsions, including permeation rate (flux) and lag time. When microemulsions were used as a vehicle, the drug permeation rate increased significantly and the lag time shortened significantly when compared with the aqueous control of 40% isopropyl alcohol solution containing 3% citalopram, demonstrating that microemulsions are a promising vehicle for transdermal application. With regard to the pharmacokinetic parameters of citalopram, the flux required for the transdermal delivery system was about 1280 μg per hour. The microemulsions loaded with citalopram 3% and 10% showed respective flux rates of 179.6 μg/cm(2) and 513.8 μg/cm(2) per hour, indicating that the study formulation could provide effective therapeutic concentrations over a practical application area. The animal study showed that the optimized formulation (F15) containing 3% citalopram with an application area of 3.46 cm(2) is able to reach a minimum effective therapeutic concentration with no erythematous reaction.
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Affiliation(s)
- Chi-Te Huang
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan, Republic of China
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Manconi M, Nácher A, Merino V, Merino-Sanjuan M, Manca ML, Mura C, Mura S, Fadda AM, Diez-Sales O. Improving oral bioavailability and pharmacokinetics of liposomal metformin by glycerolphosphate-chitosan microcomplexation. AAPS PharmSciTech 2013; 14:485-96. [PMID: 23471836 DOI: 10.1208/s12249-013-9926-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 01/12/2013] [Indexed: 11/30/2022] Open
Abstract
The purpose of this study was to develop a new delivery system capable of improving bioavailability and controlling release of hydrophilic drugs. Metformin-loaded liposomes were prepared and to improve their stability surface was coated with chitosan cross-linked with the biocompatible β-glycerolphosphate. X-ray diffraction, differential scanning calorimetry, as well as rheological analysis were performed to investigate interactions between chitosan and β-glycerolphosphate molecules. The entrapment of liposomes into the chitosan-β-glycerolphosphate network was assessed by scanning electron microscopy and transmission electron microscopy. Swelling and mucoadhesive properties as well as drug release were evaluated in vitro while the drug oral bioavailability was evaluated in vivo on Wistar rats. Results clearly showed that, compared to control, the proposed microcomplexes led to a 2.5-fold increase of metformin T(max) with a 40% augmentation of the AUC/D value.
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Baert B, Vansteelandt S, De Spiegeleer B. Ion mobility spectrometry as a high-throughput technique for in vitro transdermal Franz diffusion cell experiments of ibuprofen. J Pharm Biomed Anal 2011; 55:472-8. [DOI: 10.1016/j.jpba.2011.02.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 02/10/2011] [Accepted: 02/23/2011] [Indexed: 11/28/2022]
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Nanoparticles and microparticles for skin drug delivery. Adv Drug Deliv Rev 2011; 63:470-91. [PMID: 21315122 DOI: 10.1016/j.addr.2011.01.012] [Citation(s) in RCA: 459] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 01/27/2011] [Accepted: 01/31/2011] [Indexed: 01/29/2023]
Abstract
Skin is a widely used route of delivery for local and systemic drugs and is potentially a route for their delivery as nanoparticles. The skin provides a natural physical barrier against particle penetration, but there are opportunities to deliver therapeutic nanoparticles, especially in diseased skin and to the openings of hair follicles. Whilst nanoparticle drug delivery has been touted as an enabling technology, its potential in treating local skin and systemic diseases has yet to be realised. Most drug delivery particle technologies are based on lipid carriers, i.e. solid lipid nanoparticles and nanoemulsions of around 300 nm in diameter, which are now considered microparticles. Metal nanoparticles are now recognized for seemingly small drug-like characteristics, i.e. antimicrobial activity and skin cancer prevention. We present our unpublished clinical data on nanoparticle penetration and previously published reports that support the hypothesis that nanoparticles >10nm in diameter are unlikely to penetrate through the stratum corneum into viable human skin but will accumulate in the hair follicle openings, especially after massage. However, significant uptake does occur after damage and in certain diseased skin. Current chemistry limits both atom by atom construction of complex particulates and delineating their molecular interactions within biological systems. In this review we discuss the skin as a nanoparticle barrier, recent work in the field of nanoparticle drug delivery to the skin, and future directions currently being explored.
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Abramovic Z, Hou H, Julijana K, Sentjurc M, Lariviere JP, Swartz HM, Khan N. Modulation of tumor hypoxia by topical formulations with vasodilators for enhancing therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 701:75-82. [PMID: 21445772 DOI: 10.1007/978-1-4419-7756-4_11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Tumor hypoxia is a well known therapeutic problem which contributes to radioresistance and aggressive tumor characteristics. Lack of techniques for repeated measurements of tumor oxygenation (pO(2), partial pressure of oxygen) has restricted the optimization of hypoxia modifying methods and their efficacious application with radiotherapy. We have investigated a non-invasive method to enhance tissue pO(2) of peripheral tumors using topical application of formulations with BN (Benzyl Nicotinate), a vasodilator, and have used EPR (Electron Paramagnetic Resonance) oximetry to follow its effect on tumor oxygenation.We incorporated 2.5% BN in both hydrogel and microemulsions and investigated the effects on pO(2) of subcutaneous RIF-1 (Radiation Induced Fibrosarcoma) tumors in C3H mice. The experiments were repeated for five consecutive days. The topical application of BN in hydrogel led to a significant increase from a pre-treatment pO(2) of 9.3 mmHg to 11 - 16 mmHg at 30 - 50 min on day 1. However, the magnitude and the time of significant increase in pO(2) decreased with repeated topical applications. The BN in a microemulsion resulted in a significant increase from a baseline pO(2) of 8.8 mmHg to 13 - 18 mmHg at 10 - 50 min on day 1. Experiments repeated on subsequent days showed a decline in the magnitude of pO(2) increase on repeated applications. No significant change in tumor pO(2) was observed in experiments with formulations without BN (vehicle only).EPR oximetry was successfully used to follow the temporal changes in tumor pO(2) during repeated applications for five consecutive days. This approach can be potentially used to enhance radiotherapeutic outcome by scheduling radiation doses when an increase in tumor pO(2) is observed after topical applications of BN formulations.
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Affiliation(s)
- Zrinka Abramovic
- Laboratory of Biophysics, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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Kim DK, Park JC, Chang IH, Kang C, Ryu SR, Shin SC. Enhanced Controlled Transdermal Delivery of Hydrochlorothiazide from an Ethylene-vinyl Acetate Matrix. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2010. [DOI: 10.4333/kps.2010.40.3.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hou H, Abramovic Z, Lariviere JP, Sentjurc M, Swartz H, Khan N. Effect of a topical vasodilator on tumor hypoxia and tumor oxygen guided radiotherapy using EPR oximetry. Radiat Res 2010; 173:651-8. [PMID: 20426665 DOI: 10.1667/rr1947.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We sought to reduce tumor hypoxia by topical application of a vasodilator, benzyl nicotinate (BN), and investigated its effect on the growth of tumors irradiated at times when tumor pO(2) increased. EPR oximetry was used to follow the changes in the tissue pO(2) of subcutaneous radiation-induced fibrosarcoma (RIF-1) tumors during topical applications of 1.25-8% BN formulations for 5 consecutive days. The RIF-1 tumors were hypoxic with a tissue pO(2) of 4.6-7.0 mmHg. A significant increase in tumor pO(2) occurred 10-30 min after BN application. The formulation with the minimal BN concentration that produced a significant increase in tumor pO(2) was used for the radiation study. The tumors were irradiated (4 Gy x 5) at the time of the maximum increase in pO(2) observed with the 2.5% BN formulation. The tumors with an increase in pO(2) of greater than 2 mmHg from the baseline after application of BN on day 1 had a significant growth inhibition compared to the tumors with an increase in pO(2) of less than 2 mmHg. The results indicate that the irradiation of tumors at the time of an increase in pO(2) after the topical application of the 2.5% BN formulation led to a significant growth inhibition. EPR oximetry provided dynamic information on the changes in tumor pO(2), which could be used to identify responders and non-responders and schedule therapy during the experiments.
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Affiliation(s)
- Huagang Hou
- EPR Center for Viable Systems, Department of Diagnostic Radiology, Dartmouth Medical School, Hanover, New Hampshire 03755, USA
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Abstract
Topical drug application is less prone to severe systemic side-effects than systemic application. Starting with the liposomes, various types of nanosized and microsized drug carriers have been developed to increase the notoriously low penetration of active agents into the skin, which limits not only the topical therapy of skin disease but also transdermal therapy. Today, liposome- and microsponge-based preparations are approved for dermatomycosis, acne and actinic keratosis. Under investigation are drug carriers such as lipid nanoparticles, polymeric particles, dendrimers, and dendritic-core multi-shell nanotransporters. According to the rapidly increasing research in this field, both in academia and industry, a breakthrough appears likely, once stability problems (nanoparticles) and safety concerns (dendrimers) are overcome. Technical approaches and results of in vitro, ex vivo and in vivo testing are described, taking into account pharmacokinetic, efficacy and safety aspects.
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Affiliation(s)
- Hans Christian Korting
- Klinik und Poliklinik für Dermatologie und Allergologie, Ludwig-Maximilians-Universität, Frauenlobstrasse 9-11, 80337 München, Germany.
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Xing J, Deng L, Li J, Dong A. Amphiphilic poly{[alpha-maleic anhydride-omega-methoxy-poly(ethylene glycol)]-co-(ethyl cyanoacrylate)} graft copolymer nanoparticles as carriers for transdermal drug delivery. Int J Nanomedicine 2009; 4:227-32. [PMID: 19918369 PMCID: PMC2775693 DOI: 10.2147/ijn.s7814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Indexed: 11/23/2022] Open
Abstract
In this study, the transdermal drug delivery properties of D,L-tetrahydropalmatine (THP)-loaded amphiphilic poly{[alpha-maleic anhydride-omega-methoxy-poly(ethylene glycol)]-co-(ethyl cyanoacrylate)} (PEGECA) graft copolymer nanoparticles (PEGECAT NPs) were evaluated by skin penetration experiments in vitro. The transdermal permeation experiments in vitro were carried out in Franz diffusion cells using THP-loaded PEGECAT NPs as the donor system. Transmission electron microscopy and Fourier transform infrared spectroscopy were used to characterize the receptor fluid. The results indicate that the THP-loaded PEGECAT NPs are able to penetrate the rat skin. Fluorescent microscopy measurements demonstrate that THP-loaded PEGECAT NPs can penetrate the skin not only via appendage routes but also via epidermal routes. This nanotechnology has potential application in transdermal drug delivery.
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Affiliation(s)
- Jinfeng Xing
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China
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Azeem A, Ahmad FJ, Khar RK, Talegaonkar S. Nanocarrier for the transdermal delivery of an antiparkinsonian drug. AAPS PharmSciTech 2009; 10:1093-103. [PMID: 19757079 DOI: 10.1208/s12249-009-9306-2] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Accepted: 08/20/2009] [Indexed: 11/30/2022] Open
Abstract
The purpose of the present study was to investigate the potential of nanoemulsions as nanodrug carrier systems for the percutaneous delivery of ropinirole. Nanoemulsions comprised Capryol 90 as the oil phase, Tween 20 as the surfactant, Carbitol as the cosurfactant, and water as an external phase. The effects of composition of nanoemulsion, including the ratio of surfactant and cosurfactant (Smix) and their concentration on skin permeation, were evaluated. All the prepared nanoemulsions showed a significant increase in permeation parameters such as steady state flux (Jss) and permeability coefficient (Kp) when compared to the control (p<0.01). Nanoemulsion composition (NEL3) comprising ropinirole (0.5% w/w), Capryol 90 (5% w/w), Smix 2:1 (35% w/w), and water (59.5% w/w) showed the highest flux (51.81+/-5.03 microg/cm2/h) and was selected for formulation into nanoemulsion gel. The gel was further optimized with respect to oil concentration (Capryol 90), polymer concentration (Carbopol), and drug content by employing the Box-Behnken design, which statistically evaluated the effects of these components on ropinirole permeation. Oil and polymer concentrations were found to have a negative influence on permeation, while the drug content had a positive effect. Nanoemulsion gel showed a 7.5-fold increase in skin permeation rate when compared to the conventional hydrogel. In conclusion, the results of the present investigation suggested a promising role of nanoemulsions in enhancing the transdermal permeation of ropinirole.
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Koklic T, Zeisig R, Šentjurc M. Interaction of alkylphospholipid liposomes with MT-3 breast-cancer cells depends critically on cholesterol concentration. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:2682-9. [DOI: 10.1016/j.bbamem.2008.08.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2008] [Revised: 08/21/2008] [Accepted: 08/21/2008] [Indexed: 11/25/2022]
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