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Hochberger LC, Junior JM, Gama LA, Arrais-Silva WW, de Souza NC, de Souza Souto PC. The aging analysis of natural rubber-Copaifera oblongifolia extract membranes. Int J Biol Macromol 2023; 235:123742. [PMID: 36806774 DOI: 10.1016/j.ijbiomac.2023.123742] [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: 10/11/2022] [Revised: 12/21/2022] [Accepted: 02/14/2023] [Indexed: 02/19/2023]
Abstract
Natural rubber (NR), derived from Hevea brasiliensis, has properties for biomedical applications. Several studies indicate that these properties can be amplified when we associate another bioproduct. However, there are no studies of aging aspects of this biomaterial regarding changes in functionality, structure and composition. The objective was to evaluate the aging process of natural rubber membranes - copaiba (NRC) subjected to controlled conditions of time, light and presence of oxygen. The NRC was prepared and stored in the presence or absence of light and vacuum, for periods of 30, 60 and 90 days. Subsequently, the membranes were characterized through the techniques of wettability, infrared spectroscopy, thermal analysis, scanning microscopy and antioxidant activity. The wettability analysis, showed that NRC membranes both in the zero time and in the aging time were hydrophilic. Through thermogravimetric analysis and differential exploratory analysis the membranes remained thermally stable. The scanning electronic microscopy, indicated no morphological alterations during the observed period. After 90 days, the packaged membranes showed satisfactory antioxidant activity. Our results suggest that the membranes were resistant to the storage period, since they maintained their chemical, thermal, morphological and antioxidant characteristics. Hence, it corroborates to use of membranes as a possible curative for biomedical applications.
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Affiliation(s)
- Luana Caroline Hochberger
- Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil
| | - Jair Marques Junior
- Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil
| | - Loyane Almeida Gama
- Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil
| | - Wagner Welber Arrais-Silva
- Laboratório de Parasitologia, Departamento de Morfologia, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
| | - Nara Cristina de Souza
- Laboratório de Nanosistemas e Tecnologias, Universidade Federal de Goiás, Ap. de Goiânia, Goiás, Brazil
| | - Paula Cristina de Souza Souto
- Laboratório de Biologia Vascular e Histopatologia, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso/UFMT, Barra do Garças, Mato Grosso, Brazil.
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Mussel-inspired poly(hydroxyethyl acrylate-co-itaconic acid)-catechol/hyaluronic acid drug-in-adhesive patches for transdermal delivery of ketoprofen. Int J Pharm 2022; 629:122362. [DOI: 10.1016/j.ijpharm.2022.122362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/04/2022] [Accepted: 10/28/2022] [Indexed: 11/14/2022]
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Hashemi S, Mortazavi SA, Moghimi HR, Darbasizadeh B. Development and Evaluation of a Novel Methotrexate-Loaded Electrospun Patch to Alleviate Psoriasis Plaques. Drug Dev Ind Pharm 2022; 48:355-366. [PMID: 36000909 DOI: 10.1080/03639045.2022.2117373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To achieve an effective topical formulation of Methotrexate (MTX) as a first-line treatment of psoriasis, we formulated three MTX-loaded electrospun nanofibrous patches composed of polycaprolactone (PCL), Eudragit L100, and a mixture of them. SIGNIFICANCE Topical delivery of MTX provides an appropriate therapeutic performance while circumventing the life-threatening side effects of systemic administration. METHODS Three MTX-loaded electrospun nanofibrous patches were prepared and characterized in terms of size and morphology (using SEM), thermal behavior (by TGA and DSC), and crystalline structure (using XRD). Furthermore, the wettability and mechanical strength of samples were investigated through water contact angle and tensile strength tests. Also, the encapsulation efficiency of MTX was calculated. Subsequently, in vitro drug release profile of each formulation was obtained and different kinetic models were fitted to achieve the best-matched model. Accordingly, the ex vivo skin permeation of MTX was studied for the optimum formulation. RESULTS All samples showed appropriate morphology, thermal behavior, and encapsulation efficiency. Also, XRD results showed that MTX is dispersed within the polymeric matrices in the amorphous state (with no crystalline region). Release studies demonstrated that MTX-loaded Eudragit L100-PCL formulation outperformed in terms of mechanical behavior and in vitro drug release. This formulation also exhibited better skin permeation. CONCLUSION The obtained controlled-release MTX-loaded electrospun patches seem promising to provide a long-acting topical treatment of psoriatic plaques with minimized systemic side effects.
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Affiliation(s)
- Shiva Hashemi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Alireza Mortazavi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Moghimi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Darbasizadeh
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Miyazaki T, Aso Y, Goda Y. [Detection and Analysis of Drug Crystals in Medical Transdermal Patches by Using X-ray Diffraction Measurement]. YAKUGAKU ZASSHI 2021; 142:65-74. [PMID: 34645768 DOI: 10.1248/yakushi.21-00160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The crystallization of active pharmaceutical ingredients (APIs) in matrix-type transdermal patches has implications for the rate of drug absorption through the skin and patch adhesion strength. Therefore, the presence or absence and the degree of API crystallinity must be controlled to guarantee the quality of patches. In this study, the utility of laboratory-level X-ray diffractometers for the detection and analysis of crystalline APIs in transdermal patches was investigated using medical patches of tulobuterol and isosorbide dinitrate. Several matrix-type patches employ a controlled drug delivery system containing intentionally crystallized API. Both benchtop and high-resolution laboratory X-ray diffractometers can detect several characteristic peaks of the APIs in these patches even if the patches are wrapped in an outer bag, although a benchtop model provides peak heights one-seventh to one-fifth that of a high-resolution instrument. An isosorbide dinitrate patch containing an unintentionally crystallized spot was wrapped in an outer bag, followed by measurements using both X-ray diffractometers. For both instruments, several isosorbide dinitrate-derived peaks were detected only at the crystallized spot, although the signal-to-noise ratio was poorer for the benchtop model. These results show that a high-resolution X-ray diffractometer is advantageous for high-detection sensitivity and offers a high degree of freedom of the measurement position on the sample. It was concluded that a laboratory-level high-resolution X-ray diffractometer can be used to examine the crystalline state of APIs in patches inside an unopened outer bag.
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Affiliation(s)
| | - Yukio Aso
- National Institute of Health Sciences
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Development and Evaluation of Novel Water-Based Drug-in-Adhesive Patches for the Transdermal Delivery of Ketoprofen. Pharmaceutics 2021; 13:pharmaceutics13060789. [PMID: 34070540 PMCID: PMC8228130 DOI: 10.3390/pharmaceutics13060789] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 11/25/2022] Open
Abstract
The objective of this study was to develop novel water-based drug-in-adhesive pressure-sensitive adhesives (PSAs) patches for the transdermal delivery of ketoprofen, employing poly(N-vinylpyrrolidone-co-acrylic acid) copolymer (PVPAA) and poly(methyl vinyl ether-alt-maleic anhydride) (PMVEMA) as the main components. The polymers were crosslinked with tartaric acid and dihydroxyaluminium aminoacetate using various polymer ratios. Ketoprofen was incorporated into the PVPAA/PMVEMA PSAs during the patch preparation. The physicochemical properties, adhesive properties, drug content, release profile, and skin permeation of the patches were examined. Moreover, the in vivo skin irritation and skin adhesion performance in human volunteers were evaluated. The patches prepared at a weight ratio of PVPAA/PMVEMA of 1:1 presented the highest tacking strength, with desirable peeling characteristics. The ketoprofen-loaded PVPAA/PMVEMA patches exhibited superior adhesive properties, compared to the commercial patches, because the former showed an appropriate crosslinking and hydrating status with the aid of a metal coordination complex. Besides, the permeated flux of ketoprofen through the porcine skin of the ketoprofen-loaded PVPAA/PMVEMA patches (4.77 ± 1.00 µg/cm2/h) was comparable to that of the commercial patch (4.33 ± 0.80 µg/cm2/h). In human studies, the PVPAA/PMVEMA patches exhibited a better skin adhesion performance, compared with the commercial patches, without skin irritation. In addition, the patches were stable for 6 months. Therefore, these novel water-based PSAs may be a potential adhesive for preparing drug-in-adhesive patches.
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Morise BT, Chagas ALD, Barros NR, Miranda MCR, Borges FA, Gemeinder JLP, Silva RG, Paulino CG, Herculano RD, Norberto AMQ. Scopolamine loaded in natural rubber latex as a future transdermal patch for sialorrhea treatment. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1506984] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- B. T. Morise
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - A. L. D. Chagas
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - N. R. Barros
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - M. C. R. Miranda
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - F. A. Borges
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - J. L. P. Gemeinder
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - R. G. Silva
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - C. G. Paulino
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - R. D. Herculano
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - A. M. Q. Norberto
- Faculty of Medicine, São Paulo University (USP), Ribeirão Preto, Brazil
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Thermally Crosslinked Biocompatible Hydrophilic Polyvinylpyrrolidone Coatings on Polypropylene with Enhanced Mechanical and Adhesion Properties. Macromol Res 2018. [DOI: 10.1007/s13233-018-6031-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Shi Y, Li Y, Wu J, Wang W, Dong A, Zhang J. A novel transdermal drug delivery system based on self-adhesive Janus nanofibrous film with high breathability and monodirectional water-penetration. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:713-28. [DOI: 10.1080/09205063.2014.897596] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Shi Y, Xu S, Dong A, Zhang J. Design and in vitro evaluation of transdermal patches based on ibuprofen-loaded electrospun fiber mats. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:333-341. [PMID: 23138838 DOI: 10.1007/s10856-012-4805-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Accepted: 10/24/2012] [Indexed: 06/01/2023]
Abstract
To improve the poor compatibility among different components of Drug-in-adhesive type patch, two novel plasters (Drug-in-fiber and Drug-in-adhesive/fiber) were developed based on ibuprofen (IBU)-loaded fiber mats. These fibrous mats were fabricated via electrospinning of cellulose acetate/poly(vinylpyrrolidone) composites in a binary solvent of N,N-dimethyl acetamide/acetone. Physical status studies suggested that Drug-in-fiber could inhibit IBU re-crystallization, but the active ingredients were released at a relatively slow rate due to the dual-resistance of fiber mat and adhesive matrix. To overcome this shortcoming, Drug-in-adhesive/fiber was designed by coupling medicated hydrophilic pressure sensitive adhesive and IBU-loaded fiber mat. This method endowed Drug-in-adhesive/fiber a fast IBU release rate and high permeated drug amount though simulative skins. This design separated enhancer from adhesive matrix, which guaranteed Drug-in-adhesive/fiber excellent adhesion forces. Hence, the plasters based on medicated fiber mats improved the compatibility among patch components.
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Affiliation(s)
- Yongli Shi
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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Wang C, Liu R, Tang X, Han W. A drug-in-adhesive matrix based on thermoplastic elastomer: evaluation of percutaneous absorption, adhesion, and skin irritation. AAPS PharmSciTech 2012; 13:1179-89. [PMID: 22961413 DOI: 10.1208/s12249-012-9849-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 08/22/2012] [Indexed: 11/30/2022] Open
Abstract
A novel drug-in-adhesive matrix was designed and prepared. A thermoplastic elastomer, styrene-isoprene-styrene (SIS) block copolymer, in combination with tackifying resin and plasticizer, was employed to compose the matrix. Capsaicin was selected as the model drug. The drug percutaneous absorption, adhesion properties, and skin irritation were investigated. The results suggested that the diffusion through SIS matrix was the rate-limiting step of capsaicin percutaneous absorption. [SI] content in SIS and SIS proportions put important effects on drug penetration and adhesion properties. The chemical enhancers had strong interactions with the matrix and gave small effect on enhancement of drug skin permeation. The in vivo absorption of samples showed low drug plasma peaks and a steady and constant plasma level for a long period. These results suggested that the possible side effects of drug were attenuated, and the pharmacological effects were enhanced with an extended therapeutic period after application of SIS matrix. The significant differences in pharmacokinetic parameters produced by different formulations demonstrated the influences of SIS copolymer on drug penetrability. Furthermore, the result of skin toxicity test showed that no skin irritation occurred in guinea pig skin after transdermal administration of formulations.
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11
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Wang C, Han W, Tang X, Zhang H. Evaluation of drug release profile from patches based on styrene-isoprene-styrene block copolymer: the effect of block structure and plasticizer. AAPS PharmSciTech 2012; 13:556-67. [PMID: 22476973 DOI: 10.1208/s12249-012-9778-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Accepted: 03/21/2012] [Indexed: 11/30/2022] Open
Abstract
We prepared pressure-sensitive adhesive (PSA) patches based on styrene-isoprene-styrene (SIS) thermoplastic elastomer using hot-melt coating method. The liquid paraffine is added in the PSA matrices as a plasticizer to moderate the PSA properties. Three drugs, methyl salicylate, capsaicin, and diphenhydramine hydrochloride are selected as model drugs. The Fourier transform infrared spectroscopy, differential scanning calorimetry test, and wide-angle X-ray diffraction test indicate a good compatibility between drugs and matrices. Peppas equation is used to describe drug release profile. Different drug-matrix absorption, as indicative of drug-matrix interaction, accounts for the variation in release profiles of different drugs. Furthermore, atomic force microscopy and rheological studies of the PSA samples are performed to investigate the effect of SIS structure and plasticizer of PSA on drug release behaviors. For methyl salicylate and capsaicin, drug diffusion in the PSA matrices is the main factor controlled by the release kinetic constant k. The high [SI] diblock content and high plasticizer amount in matrix provide the PSA with a homogeneous and soften microstructure, resulting in a high diffusion rate. But for water-soluble drugs such as diphenhydramine hydrochloride, the release rate is governed by water penetration with the competition from diffusion mechanisms.
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Shahzad Y, Shah SNH, Ansari MT, Riaz R, Safdar A, Hussain T, Malik M. Effects of drug-polymer dispersions on solubility and in vitro diffusion of artemisinin across a polydimethylsiloxane membrane. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5094-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cilurzo F, Gennari CGM, Minghetti P. Adhesive properties: a critical issue in transdermal patch development. Expert Opin Drug Deliv 2011; 9:33-45. [PMID: 22171789 DOI: 10.1517/17425247.2012.637107] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Transdermal patches and medicated plasters (patch) represent well-established prolonged release dosage forms. Even if satisfactory adhesion to the skin is strictly linked to the efficacy and safety of the therapeutic treatment, nowadays numerous reports of in vivo 'adhesion lacking' are still addressed to regulatory agencies. The adhesive properties of a patch should be characterized considering i) the ability to form a bond with the surface of another material on brief contact and under light pressure (tack); ii) the resistance of the adhesive to flow (shear adhesion); and iii) the force required to peel away a patch from a surface (peel adhesion). AREAS COVERED In this manuscript, the most widely used methods to measure adhesive properties during development studies are described, along with the quality control of patches. The influence of formulative variables on patch adhesive properties, and their possible relationship with the in vivo adhesion performances, is also discussed. EXPERT OPINION The Pharmacopoeias should consider the opportunity of introducing compendial testing to assay the quality of adhesive patch properties, and regulatory agencies should issue proper guidelines to evaluate these features during development.
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Affiliation(s)
- Francesco Cilurzo
- Università degli Studi di Milano, Department of Pharmaceutical Science, Via G. Colombo, 71-20131, Milano, Italy.
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Guo R, Du X, Zhang R, Deng L, Dong A, Zhang J. Bioadhesive film formed from a novel organic-inorganic hybrid gel for transdermal drug delivery system. Eur J Pharm Biopharm 2011; 79:574-83. [PMID: 21723945 DOI: 10.1016/j.ejpb.2011.06.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 06/06/2011] [Accepted: 06/17/2011] [Indexed: 11/30/2022]
Abstract
A novel organic-inorganic hybrid film-forming agent for TDDS was developed by a modified poly(vinyl alcohol) (PVA) gel using γ-(glycidyloxypropyl)trimethoxysilane (GPTMS) as an inorganic-modifying agent, poly(N-vinyl pyrrolidone) (PVP) as a tackifier and glycerol (GLY) as a plasticizer. The prepared gels can be applied to the skin by a coating method and in situ form very thin and transparent films with good performance, comfortable feel and cosmetic attractiveness. The key properties of the bioadhesive films produced from the hybrid gels were investigated and the results showed that the incorporation of appropriate GPTMS (GPTMS/(PVA+GPTMS) in the range of 20-30%) into the PVA matrix not only can significantly enhance mechanical strength and skin adhesion properties of the resultant film, but also can decrease the crystalline regions of PVA and hence facilitate the diffusion of water vapor and drug. Furthermore, the investigations into in vivo skin irritation suggested the films caused non-irritation to skin after topical application for 120 h. In conclusion, the bioadhesive films formed from organic-inorganic hybrid gels possessed very good qualities for application on the skin and may provide a promising formulation for TDDS, especially when the patient acceptability from an aesthetic perspective of the dosage form is a prime consideration.
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Affiliation(s)
- Ruiwei Guo
- Department of Polymer Science and Technology, Tianjin University, Tianjin, China
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Zhang J, Liu M, Jin H, Deng L, Xing J, Dong A. In vitro enhancement of lactate esters on the percutaneous penetration of drugs with different lipophilicity. AAPS PharmSciTech 2010; 11:894-903. [PMID: 20496018 PMCID: PMC2902310 DOI: 10.1208/s12249-010-9449-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Accepted: 04/30/2010] [Indexed: 11/30/2022] Open
Abstract
Lactate esters are widely used as food additives, perfume materials, medicine additives, and personal care products. The objective of this work was to investigate the effect of a series of lactate esters as penetration enhancers on the in vitro skin permeation of four drugs with different physicochemical properties, including ibuprofen, salicylic acid, dexamethasone and 5-fluorouracil. The saturated donor solutions of the evaluated drugs in propylene glycol were used in order to keep a constant driving force with maximum thermodynamic activity. The permeability coefficient (K(p)), skin concentration of drugs (SC), and lag time (T), as well as the enhancement ratios for K(p) and SC were recorded. All results indicated that lactate esters can exert a significant influence on the transdermal delivery of the model drugs and there is a structure-activity relationship between the tested lactate esters and their enhancement effects. The results also suggested that the lactate esters with the chain length of fatty alcohol moieties of 10-12 are more effective enhancers. Furthermore, the enhancement effect of lactate esters increases with a decrease of the drug lipophilicity, which suggests that they may be more efficient at enhancing the penetration of hydrophilic drugs than lipophilic drugs. The influence of the concentration of lactate esters was evaluated and the optimal concentration is in the range of 5-10 wt.%. In sum, lactate esters as a penetration enhancer for some drugs are of interest for transdermal administration when the safety of penetration enhancers is a prime consideration.
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Affiliation(s)
- Jianhua Zhang
- />School of Materials Science and Engineering, Tianjin University, 300072 Tianjin, China
| | - Mei Liu
- />School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China
| | - Hongjian Jin
- />School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China
| | - Liandong Deng
- />School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China
| | - Jinfeng Xing
- />School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China
| | - Anjie Dong
- />School of Materials Science and Engineering, Tianjin University, 300072 Tianjin, China
- />School of Chemical Engineering and Technology, Tianjin University, 300072 Tianjin, China
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Cilurzo F, Minghetti P, Gennari CGM, Casiraghi A, Montanari L. A novel polymethylmethacrylate hydrophilic adhesive matrix intended for transdermal patch formulations. Drug Deliv 2010; 17:171-7. [PMID: 20210561 DOI: 10.3109/10717541003667772] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Francesco Cilurzo
- Department of Pharmaceutical Sciences 'Pietro Pratesi', Università degli Studi di Milano, via G. Colombo, 71-20133 Milan, Italy.
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17
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A transdermal review on permeation of drug formulations, modifier compounds and delivery methods. J Drug Deliv Sci Technol 2010. [DOI: 10.1016/s1773-2247(10)50011-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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