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Despotopoulou D, Lagopati N, Pispas S, Gazouli M, Demetzos C, Pippa N. The technology of transdermal delivery nanosystems: from design and development to preclinical studies. Int J Pharm 2021; 611:121290. [PMID: 34788674 DOI: 10.1016/j.ijpharm.2021.121290] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/02/2021] [Accepted: 11/08/2021] [Indexed: 12/18/2022]
Abstract
Transdermal administration has gained much attention due to the remarkable advantages such as patient compliance, drug escape from first-pass elimination, favorable pharmacokinetic profile and prolonged release properties. However, the major limitation of these systems is the limited skin penetration of the stratum corneum, the skin's most important barrier, which protects the body from the insertion of substances from the environment. Transdermal drug delivery systems are aiming to the disruption of the stratum corneum in order for the active pharmaceutical ingredients to enter successfully the circulation. Therefore, nanoparticles are holding a great promise because they can act as effective penetration enhancers due to their small size and other physicochemical properties that will be analyzed thoroughly in this report. Apart from the investigation of the physicochemical parameters, a comparison between the different types of nanoparticles will be performed. The complexity of skin anatomy and the unclear mechanisms of penetration should be taken into consideration to reach some realistic conclusions regarding the way that the described parameters affect the skin permeability. To the best of the authors knowledge, this is among the few reports on the literature describing the technology of transdermal delivery systems and how this technology affects the biological activity.
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Affiliation(s)
- Despoina Despotopoulou
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Panepistimioupolis Zografou 15771, National and Kapodistrian University of Athens, Athens, Greece
| | - Nefeli Lagopati
- Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Maria Gazouli
- Department of Basic Medical Science, Laboratory of Biology, School of Medicine National and Kapodistrian University of Athens, Greece
| | - Costas Demetzos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Panepistimioupolis Zografou 15771, National and Kapodistrian University of Athens, Athens, Greece
| | - Natassa Pippa
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Panepistimioupolis Zografou 15771, National and Kapodistrian University of Athens, Athens, Greece; Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
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2
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Zeng L, Huang F, Zhang Q, Liu J, Quan D, Song W. Molecular perspective of efficiency and safety problems of chemical enhancers: bottlenecks and recent advances. Drug Deliv Transl Res 2021; 12:1376-1394. [PMID: 34476765 DOI: 10.1007/s13346-021-01044-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2021] [Indexed: 12/12/2022]
Abstract
Chemical penetration enhancer (CPE) is a preferred approach to improve drug permeability through the skin, due to its unique advantages of simple use and high compatibility. However, CPEs efficiency and safety problems frequently arise, which greatly restrains the further application in transdermal drug delivery systems (TDDS). To get access to the root of problems, the efficiency and safety of CPEs are reviewed especially from molecular perspectives, which include (1) the possible factors of CPEs low efficiency; (2) the possible contribution of CPEs in the evolution of safety problems such as skin irritation and allergic reaction; (3) the interactive relationship between CPEs efficiency and safety, as well as the bottlenecks of achieving their balance. More importantly, based on these, recent advances are summarized in improving efficiency or safety of CPEs, which offers a guidance of rationally selecting CPEs in future research.
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Affiliation(s)
- Lijuan Zeng
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Jiangning District, 639 Longmian Avenue, Nanjing, 211198, P.R. China
| | - Feifei Huang
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Jiangning District, 639 Longmian Avenue, Nanjing, 211198, P.R. China
| | - Qin Zhang
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Jiangning District, 639 Longmian Avenue, Nanjing, 211198, P.R. China
| | - Jianping Liu
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Jiangning District, 639 Longmian Avenue, Nanjing, 211198, P.R. China
| | - Danyi Quan
- Institute of Advanced Drug Delivery Technology, No. 10 Xinghuo Ave Jiangbei New Area, Nanjing, 210032, P.R. China.
| | - Wenting Song
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Jiangning District, 639 Longmian Avenue, Nanjing, 211198, P.R. China.
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Jebbawi R, Fruchon S, Turrin CO, Blanzat M, Poupot R. Supramolecular and Macromolecular Matrix Nanocarriers for Drug Delivery in Inflammation-Associated Skin Diseases. Pharmaceutics 2020; 12:E1224. [PMID: 33348690 PMCID: PMC7766653 DOI: 10.3390/pharmaceutics12121224] [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: 11/13/2020] [Revised: 12/07/2020] [Accepted: 12/14/2020] [Indexed: 11/26/2022] Open
Abstract
Skin is our biggest organ. It interfaces our body with its environment. It is an efficient barrier to control the loss of water, the regulation of temperature, and infections by skin-resident and environmental pathogens. The barrier function of the skin is played by the stratum corneum (SC). It is a lipid barrier associating corneocytes (the terminally differentiated keratinocytes) and multilamellar lipid bilayers. This intricate association constitutes a very cohesive system, fully adapted to its role. One consequence of this efficient organization is the virtual impossibility for active pharmaceutical ingredients (API) to cross the SC to reach the inner layers of the skin after topical deposition. There are several ways to help a drug to cross the SC. Physical methods and chemical enhancers of permeation are a possibility. These are invasive and irritating methods. Vectorization of the drugs through nanocarriers is another way to circumvent the SC. This mini-review focuses on supramolecular and macromolecular matrices designed and implemented for skin permeation, excluding vesicular nanocarriers. Examples highlight the entrapment of anti-inflammatory API to treat inflammatory disorders of the skin.
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Affiliation(s)
- Ranime Jebbawi
- INSERM, U1043, CNRS, U5282, UPS, Centre de Physiopathologie de Toulouse-Purpan, Université de Toulouse, F-31300 Toulouse, France; (R.J.); (S.F.)
- CNRS, UMR 5623, UPS, Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique, IMRCP, 118 Route de Narbonne, Université de Toulouse, CEDEX 9, F-31062 Toulouse, France;
| | - Séverine Fruchon
- INSERM, U1043, CNRS, U5282, UPS, Centre de Physiopathologie de Toulouse-Purpan, Université de Toulouse, F-31300 Toulouse, France; (R.J.); (S.F.)
| | - Cédric-Olivier Turrin
- CNRS, UPR 8241, Laboratoire de Chimie de Coordination, 205 Route de Narbonne, BP 44099, CEDEX 4, F-31077 Toulouse, France;
- LCC-CNRS, Université de Toulouse, CNRS, 31400 Toulouse, France
| | - Muriel Blanzat
- CNRS, UMR 5623, UPS, Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique, IMRCP, 118 Route de Narbonne, Université de Toulouse, CEDEX 9, F-31062 Toulouse, France;
| | - Rémy Poupot
- INSERM, U1043, CNRS, U5282, UPS, Centre de Physiopathologie de Toulouse-Purpan, Université de Toulouse, F-31300 Toulouse, France; (R.J.); (S.F.)
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4
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AB2-type amphiphilic block copolymer containing a pH-cleavable hydrazone linkage for targeted antibiotic delivery. Int J Pharm 2020; 575:118948. [DOI: 10.1016/j.ijpharm.2019.118948] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/01/2019] [Accepted: 12/07/2019] [Indexed: 11/22/2022]
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Chaudhari KS, Akamanchi KG. Novel bicephalous heterolipid based self-microemulsifying drug delivery system for solubility and bioavailability enhancement of efavirenz. Int J Pharm 2019; 560:205-218. [PMID: 30742985 DOI: 10.1016/j.ijpharm.2019.01.065] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 01/14/2019] [Accepted: 01/31/2019] [Indexed: 02/06/2023]
Abstract
There is an increasing demand for new lipidic biocompatible and safe materials for self-microemulsifying drug delivery system (SMEDDS). The present work reports the synthesis, characterization, oral mucosal irritation study, and application of novel erucic acid ester of G0-PETIM dendron based bicephalous heterolipid (BHL) as an oil phase in SMEDDS using Efavirenz (EFA), a BCS class II drug with poor water solubility and poor bioavailability. Studies were conducted to optimize EFA SMEDDS using different ratios of the BHL as oil phase and surfactant: co-surfactant weight ratios (Km). At Km (1.5), the microemulsion was spontaneously formed in water with mean globule size of 22.78 ± 0.25 nm and polydispersity index (PDI) of 0.23 ± 0.031 with high drug loading efficiency of 80.35 ± 3.1%. Standard stability tests were performed on EFA SMEDDS and the results indicated it to be highly stable. The in vitro dissolution profile of EFA SMEDDS showed >95% of the drug release within an hour and expectedly substantial enhancement in in vivo bioavailability was observed; almost 6-fold increase in bioavailability with parameters Cmax 5.2 µg/mL, Tmax 3 h, and AUC(0-∞) 23.48 μg/h/mL respectively as compared the plain suspension of the drug. In conclusion, the BHL can be used effectively as an oil phase in SMEDDS to enhance solubility and bioavailability of BCS Class II drugs. Further, it holds, in general, a great promise as a new excipient for solubility and bioavailability enhancements.
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Affiliation(s)
- Kapil S Chaudhari
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400019, India
| | - Krishnacharya G Akamanchi
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400019, India.
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Chaudhari KS, Akamanchi KG. Fatty Acid Esters of G0-(Propyl Ether Imine) Dendron as Bicephalous Heterolipids for Permeation Enhancement in Transdermal Drug Delivery. ACS Biomater Sci Eng 2018; 4:4008-4020. [PMID: 33418801 DOI: 10.1021/acsbiomaterials.8b00953] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kapil S. Chaudhari
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai, India, 400019
| | - Krishnacharya G. Akamanchi
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai, India, 400019
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Rambharose S, Kalhapure RS, Jadhav M, Govender T. Novel mono, di and tri-fatty acid esters bearing secondary amino acid ester head groups as transdermal permeation enhancers. NEW J CHEM 2018. [DOI: 10.1039/c7nj04025c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mono-oleate derivative (MOAPE) enhancing in vitro transdermal permeation of tenofovir.
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Affiliation(s)
- S. Rambharose
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - R. S. Kalhapure
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - M. Jadhav
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - T. Govender
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
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8
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Rambharose S, Kalhapure RS, Govender T. Nanoemulgel using a bicephalous heterolipid as a novel approach to enhance transdermal permeation of tenofovir. Colloids Surf B Biointerfaces 2017; 154:221-227. [PMID: 28343120 DOI: 10.1016/j.colsurfb.2017.03.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/21/2017] [Accepted: 03/17/2017] [Indexed: 11/30/2022]
Abstract
Improvements in permeation enhancement strategies, such as nanoemulsions (NEs) and nanoemulgels (NEGs), have led to a renewed interest in transdermal drug delivery (TDD). This study aimed to investigate the potential of LLA1E, a novel dendritic permeation enhancer, as an oily phase in the development of a NEG for the TDD of tenofovir (TNF). TNF loaded NEs (TNEs) were prepared and analysed for mean globule diameter (MGD), polydispersity index (PDI), zeta potential (ZP) and morphology. NEGs of the TNEs (TNEGs) were prepared and evaluated for ex vivo transdermal permeation efficacy. The skin integrity before and after the experiments was assessed using histology and transepithelial electrical resistance (TEER). TNEs had a MGD of 129.06±3.35nm, a PDI of 0.192±0.038 and a ZP of 20.9±2.02mV, with an incorporation efficiency of 91.94±0.84%. There was no significant change is these properties after incorporating the TNEs into the hydrogel, as MGD, PDI and ZP of TNEGs were found to be 136.13±5.21nm, 0.182±0.020 and -20.9±2.08mV respectively. Ex vivo permeation studies showed that the TNEG significantly enhanced the TNF permeation by 39.65-fold, with a cumulative amount of 1866.54±108.62μgcm-2. Histological and TEER assessments showed no permanent effects on the skin by TNEG, indicating that this novel TNEG nanosystem has the potential to translate into clinical trials as treatment alternatives for HIV/AIDs patients.
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Affiliation(s)
- Sanjeev Rambharose
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Rahul S Kalhapure
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
| | - Thirumala Govender
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
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9
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Exploring unsaturated fatty acid cholesteryl esters as transdermal permeation enhancers. Drug Deliv Transl Res 2017; 7:333-345. [DOI: 10.1007/s13346-017-0360-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Sikwal DR, Kalhapure RS, Govender T. An emerging class of amphiphilic dendrimers for pharmaceutical and biomedical applications: Janus amphiphilic dendrimers. Eur J Pharm Sci 2016; 97:113-134. [PMID: 27864064 DOI: 10.1016/j.ejps.2016.11.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 11/03/2016] [Accepted: 11/10/2016] [Indexed: 01/18/2023]
Abstract
In recent years, a new class of dendrimer, known as Janus dendrimers (JDs), has attracted much attention due to their different structures and properties to the conventional symmetric forms. The broken symmetry of JDs offers the opportunity to form complex self-assembled materials, and presents new sets of properties that are presently inconceivable for homogeneous or symmetrical dendrimers. Due to their unique features, JDs have a promising future in pharmaceutical and biomedical fields, as seen from the recent interest in their application in conjugating multiple drugs and targeting moieties, forming supramolecular hydrogels, enabling micellar delivery systems, and preparing nano-vesicles, known as dendrimersomes, for drug encapsulation. The present paper is the first review, with an emphasis on various emerging applications of JDs, in the drug delivery and biomedical field reported so far. In addition, the paper describes different synthetic methods for producing JDs that can guide the design of new biocompatible forms with pharmacological activities, and that have the potential to be nano drug delivery vehicles. Furthermore, future studies to optimize the applications of JDs in drug delivery sciences and biomedical field to realize their potential to treat various disease conditions are identified and highlighted. Overall, this review identifies the current status of JDs in terms of their synthesis and applications, as well as the future research for their translation into macromolecules for clinical applications to solve health problems. It highlights the future combined efforts needed to be taken by dendrimer chemists, formulation scientist and microbiologists to develop novel antibacterials and nanomedicines from JDs.
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Affiliation(s)
- Dhiraj R Sikwal
- Discipline of Pharmaceutical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
| | - Rahul S Kalhapure
- Discipline of Pharmaceutical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa.
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Ita K. Perspectives on Transdermal Electroporation. Pharmaceutics 2016; 8:E9. [PMID: 26999191 PMCID: PMC4810085 DOI: 10.3390/pharmaceutics8010009] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/01/2016] [Accepted: 03/10/2016] [Indexed: 01/17/2023] Open
Abstract
Transdermal drug delivery offers several advantages, including avoidance of erratic absorption, absence of gastric irritation, painlessness, noninvasiveness, as well as improvement in patient compliance. With this mode of drug administration, there is no pre-systemic metabolism and it is possible to increase drug bioavailability and half-life. However, only a few molecules can be delivered across the skin in therapeutic quantities. This is because of the hindrance provided by the stratum corneum. Several techniques have been developed and used over the last few decades for transdermal drug delivery enhancement. These include sonophoresis, iontophoresis, microneedles, and electroporation. Electroporation, which refers to the temporary perturbation of the skin following the application of high voltage electric pulses, has been used to increase transcutaneous flux values by several research groups. In this review, transdermal electroporation is discussed and the use of the technique for percutaneous transport of low and high molecular weight compounds described. This review also examines our current knowledge regarding the mechanisms of electroporation and safety concerns arising from the use of this transdermal drug delivery technique. Safety considerations are especially important because electroporation utilizes high voltage pulses which may have deleterious effects in some cases.
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Affiliation(s)
- Kevin Ita
- College of Pharmacy, Touro University, Mare Island-Vallejo, CA 94592, USA.
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Hamishehkar H, Khoshbakht M, Jouyban A, Ghanbarzadeh S. The Relationship between Solubility and Transdermal Absorption of Tadalafil. Adv Pharm Bull 2015; 5:411-7. [PMID: 26504764 PMCID: PMC4616899 DOI: 10.15171/apb.2015.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 05/21/2015] [Accepted: 05/25/2015] [Indexed: 01/16/2023] Open
Abstract
PURPOSE The aim of this study was to find a relationship between drug solubility and its transdermal permeation and find the best vehicle composition to improve transdermal permeation of Tadalafil. METHODS Pure or binary mixtures of commonly used solvents in pharmaceutical sciences including ethanol, glycerin, N-methyl pyrrolidone (NMP), polyethylene glycol (PEG) 400 and propylene glycol (PG) were evaluated for drug solubility and transdermal delivery through the exercised rat skin employing Franz diffusion cells. RESULTS Tadalafil showed higher solubility in NMP compared to the other solvents. The amount of Tadalafil permeation from the pure vehicles was ranked as follow: Ethanol >glycerin >NMP>PEG 400 >PG. Furthermore, the solubility and transdermal delivery from binary mixtures of NMP and PG were higher than that obtained from pure PG, and accordingly, both increased with increasing NMP concentration in the binary solvent mixtures. The Flux values were determined as following order for Ethanol>NMP>glycerin>PG>PEG 400. CONCLUSION Generally, increase in Tadalafil solubility resulted in a decrease in its skin penetration rate and amount. However, NMP exhibited substantial drug skin penetration rate and amount accompanying with appropriate drug solvency. In conclusion, the results of this study introduced NMP as a solvent suitable for application in the formulation of topically applied drug delivery systems.
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Affiliation(s)
- Hamed Hamishehkar
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Khoshbakht
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Students’ Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolghasem Jouyban
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Ghanbarzadeh
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
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Yang J, Hu J, He B, Cheng Y. Transdermal delivery of therapeutic agents using dendrimers (US20140018435A1): a patent evaluation. Expert Opin Ther Pat 2015; 25:1209-14. [DOI: 10.1517/13543776.2015.1044974] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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14
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Rambharose S, Kalhapure RS, Akamanchi KG, Govender T. Novel dendritic derivatives of unsaturated fatty acids as promising transdermal permeation enhancers for tenofovir. J Mater Chem B 2015; 3:6662-6675. [DOI: 10.1039/c5tb00957j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel dendritic ester derivatives of unsaturated fatty acids as potential transdermal permeation enhancers.
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Affiliation(s)
- Sanjeev Rambharose
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
- School of Laboratory Medicine and Medical Sciences
| | - Rahul S. Kalhapure
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | | | - Thirumala Govender
- Department of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban 4000
- South Africa
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15
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Dhumal DM, Kothari PR, Kalhapure RS, Akamanchi KG. Self-microemulsifying drug delivery system of curcumin with enhanced solubility and bioavailability using a new semi-synthetic bicephalous heterolipid: in vitro and in vivo evaluation. RSC Adv 2015. [DOI: 10.1039/c5ra18112g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Curcumin SMEDDS from heterolipid E1E.
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Affiliation(s)
- Dinesh M. Dhumal
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai 400019
- India
| | - Priya R. Kothari
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai 400019
- India
| | - 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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17
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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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