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Radmard A, Kumar Srivastava R, Shrestha N, Khan J, Muzaffar S, Athar M, Banga AK. Enhancing topical delivery of ISRIB: Optimizing cream formulations with chemical enhancers and pH adjustment. Int J Pharm 2024:124661. [PMID: 39244069 DOI: 10.1016/j.ijpharm.2024.124661] [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: 07/11/2024] [Revised: 08/27/2024] [Accepted: 09/01/2024] [Indexed: 09/09/2024]
Abstract
Chemical warfare agents, particularly vesicants like lewisite, pose a threat due to their ability to cause skin damage through accidental exposure or deliberate attacks. Lewisite rapidly penetrates the skin, causing inflammation and blistering. This study focuses on developing a cream formulation of a therapeutic agent, called integrated stress response inhibitor (ISRIB), to treat lewisite-induced injuries. Moreover, animal studies demonstrate a molecular target engagement (ISR) and significant efficacy of ISRIB against lewisite-induced cutaneous injury. The goal of this formulation is to enhance the delivery of ISRIB directly to affected skin areas using an oil-in-water cream emulsion system. We investigated various excipients, including oils, surfactants, emollients, and permeation enhancers, to optimize ISRIB's solubility and penetration through the skin. The result of this study indicated that the optimal formulation includes 30 % w/w of N-Methyl-2-pyrrolidone, dimethyl sulfoxide and Azone® at a pH of 5. 5. It delivered the highest amount of ISRIB into the skin, demonstrating highest skin absorption with no detectable systemic exposure. Additionally, characterization of the cream, including texture analysis, emulsion type, and content uniformity, confirmed its' suitability for topical application. These findings suggest that ISRIB cream formulation is a promising approach for the localized treatment of skin injuries caused by lewisite.
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Affiliation(s)
- Ariana Radmard
- Center for Drug Delivery Research, Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Ritesh Kumar Srivastava
- UAB Research Center of Excellence in Arsenicals, Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Nisha Shrestha
- Center for Drug Delivery Research, Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Jasim Khan
- UAB Research Center of Excellence in Arsenicals, Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Suhail Muzaffar
- UAB Research Center of Excellence in Arsenicals, Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Mohammad Athar
- UAB Research Center of Excellence in Arsenicals, Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ajay K Banga
- Center for Drug Delivery Research, Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA.
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Han W, Liu F, Muhammad M, Liu G, Li H, Xu Y, Sun S. Application of biomacromolecule-based passive penetration enhancement technique in superficial tumor therapy: A review. Int J Biol Macromol 2024; 272:132745. [PMID: 38823734 DOI: 10.1016/j.ijbiomac.2024.132745] [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: 12/27/2023] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/03/2024]
Abstract
Transdermal drug delivery (TDD) has shown great promise in superficial tumor therapy due to its noninvasive and avoidance of the first-pass effect. Especially, passive penetration enhancement technique (PPET) provides the technical basis for TDD by temporarily altering the skin surface structure without requiring external energy. Biomacromolecules and their derived nanocarriers offer a wide range of options for PPET development, with outstanding biocompatibility and biodegradability. Furthermore, the abundant functional groups on biomacromolecule surfaces can be modified to yield functional materials capable of targeting specific sites and responding to stimuli. This enables precise drug delivery to the tumor site and controlled drug release, with the potential to replace traditional drug delivery methods and make PPET-related personalized medicine a reality. This review focuses on the mechanism of biomacromolecules and nanocarriers with skin, and the impact of nanocarriers' surface properties of nanocarriers on PPET efficiency. The applications of biomacromolecule-based PPET in superficial tumor therapy are also summarized. In addition, the advantages and limitations are discussed, and their future trends are projected based on the existing work of biomacromolecule-based PPET.
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Affiliation(s)
- Weiqiang Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fengyu Liu
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, China.
| | - Mehdi Muhammad
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Guoxin Liu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hongjuan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yongqian Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shiguo Sun
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China; Shenzhen Research Institute, Northwest A&F University, Shenzhen 518000, China.
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Oshizaka T, Yamamoto A, Tanaka H, Takeuchi I, Mori K, Sugibayashi K. Design of Ionic Liquid Formulations with Azone-Mimic Structures for Enhanced Drug Skin Permeation. J Pharm Sci 2024; 113:1299-1305. [PMID: 38103688 DOI: 10.1016/j.xphs.2023.12.007] [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: 06/26/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
Although laurocapram (Azone) significantly enhances the skin permeation of drugs, its development was hindered by its skin irritation. We then developed an Azone-mimic ionic liquid (IL-Azone), composed of less irritating cationic ε-caprolactam and anionic myristic acid. IL-Azone dissociates to the original cation and anion in the presence of water in the formulation. We tried to select a formulation suitable for IL-Azone in the present study. Each formulation contained 5 % of either Azone or IL-Azone along with the model drug antipyrine, and skin permeation experiments of the drug were conducted. The results revealed that IL-Azone did not enhance skin permeation when combined with most formulations tested. However, a notable and rapid enhancement in skin permeation was observed when combined with white petrolatum. This effect could be attributed to the minimal water content in white petrolatum, which prevented IL-Azone degradation. Furthermore, its permeation-enhancing effects from IL-Azone in white petrolatum were more pronounced and rapid than Azone. The rapid onset observed with IL-Azone can be attributed to its degradation into its original components at the interface between the stratum corneum and the living epidermis, which results in a shorter lag time before achieving a steady-state concentration in the SC compared to Azone.
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Affiliation(s)
- Takeshi Oshizaka
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan.
| | - Aki Yamamoto
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Hikaru Tanaka
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Issei Takeuchi
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Kenji Mori
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Kenji Sugibayashi
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan; Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan.
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Oshizaka T, Hayakawa M, Uesaka M, Yoshizawa K, Kamei T, Takeuchi I, Mori K, Itakura S, Todo H, Sugibayashi K. Design of an Ante-enhancer with an Azone-Mimic Structure using Ionic Liquid. Pharm Res 2023; 40:1577-1586. [PMID: 37081304 DOI: 10.1007/s11095-023-03515-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/05/2023] [Indexed: 04/22/2023]
Abstract
PURPOSE Laurocapram (Azone) was broadly examined as a representative enhancer of skin penetration in the 1980s. However, it was not approved for treatment because it caused skin irritation following its penetration into the epidermis through the stratum corneum. In the present study, a so-called ante-enhancer with an Azone-mimic structure was designed based on an ante-drug with negligible systemic toxic effects following its permeation through the skin. METHODS The ante-enhancer was designed using ionic liquid technology: an ionic liquid-type ante-enhancer (IL-Azone) with an Azone-mimic structure was prepared from ε-caprolactam and myristic acid as cationic and anionic substances, respectively. The enhancing effects of IL-Azone on the permeation by the following model drugs through pig skin were examined: isosorbide 5-mononitrate (ISMN), antipyrine (ANP), and fluorescein isothiocyanate dextran (FD-4). Skin irritation by IL-Azone was assessed using the Draize method. RESULTS The primary irritation index (P.I.I.) of IL-Azone by the Draize method was markedly lower than that of Azone (6.9). Although the ability of IL-Azone to enhance skin penetration was not as high as Azone, IL-Azone moderately increased skin permeation by the model compounds tested (ISMN: 4.7 fold, ANP: 4.5 fold, FD-4: 4.0 fold). CONCLUSIONS These results suggest the usefulness of designing a skin penetration enhancer using ionic liquid technology. Further trials on the ionic liquid design with an Azone-mimic structure using other cations and anions may lead to the development of better ante-enhancers.
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Affiliation(s)
- Takeshi Oshizaka
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan.
| | - Mao Hayakawa
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan
| | - Mayu Uesaka
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan
| | - Kota Yoshizawa
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Tomoyo Kamei
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan
| | - Issei Takeuchi
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan
| | - Kenji Mori
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan
| | - Shoko Itakura
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Hiroaki Todo
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Kenji Sugibayashi
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba, 283-8555, Japan.
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan.
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Nawaz A, Farid A, Safdar M, Latif MS, Ghazanfar S, Akhtar N, Al Jaouni SK, Selim S, Khan MW. Formulation Development and Ex-Vivo Permeability of Curcumin Hydrogels under the Influence of Natural Chemical Enhancers. Gels 2022; 8:gels8060384. [PMID: 35735728 PMCID: PMC9223005 DOI: 10.3390/gels8060384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/12/2022] [Accepted: 06/14/2022] [Indexed: 01/14/2023] Open
Abstract
Background: The aim of the present research was to formulate and evaluate curcumin hydrogel and to investigate the potential of natural essential oils as permeation enhancers. Methods: Curcumin 2% w/w hydrogel containing various concentrations of eucalyptus oil, aloe vera oil and clove oil was developed using carboxy methyl cellulose (CMC) as a gelling agent. Differential scanning calorimetry and Fourier Transform infrared spectroscopy were used to evaluate the compatibility between the drug and the excipients. In order to assess the efficacy of the formulation; rheological properties, skin irritation studies, in vitro release, ex vivo permeation and retention studies were conducted. Results: DSC and FTIR suggest no in-compatibility between curcumin and excipients. Studies proved that addition of suitable natural permeation enhancers to the hydrogels improved the in vitro release and ex vivo permeation and retention of curcumin. From the various natural essential oils, the aloe vera oil at a concentration of 3% w/w had the greatest effect on the permeability rate and skin retention of the Curcumin and produces the highest enhancement ratio amongst all the concentrations of essential oils examined. Conclusion: Aloe vera oil enhances the permeation of curcumin across the skin by altering the complex structure of the stratum corneum without itself undergoing any change. The developed curcumin hydrogels along with natural essential oils may present an effective choice regarding skin infection/wound healing.
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Affiliation(s)
- Asif Nawaz
- Advanced Drug Delivery Lab, Gomal Centre of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.S.); (M.S.L.)
- Correspondence: (A.N.); (A.F.)
| | - Arshad Farid
- Gomal Center of Biochemistry and Biotechnology, Gomal University, Dera Ismail Khan 29050, Pakistan
- Correspondence: (A.N.); (A.F.)
| | - Muhammad Safdar
- Advanced Drug Delivery Lab, Gomal Centre of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.S.); (M.S.L.)
| | - Muhammad Shahid Latif
- Advanced Drug Delivery Lab, Gomal Centre of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.S.); (M.S.L.)
| | - Shakira Ghazanfar
- National Institute for Genomics Advanced Biotechnology, National Agricultural Research Centre, Park Road, Islamabad 45500, Pakistan;
| | - Nosheen Akhtar
- Department of Biological Sciences, National University of Medical Sciences, Islamabad 45500, Pakistan;
| | - Soad K. Al Jaouni
- Department of Hematology/Oncology, Yousef Abdulatif Jameel Scientific Chair of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72388, Saudi Arabia;
| | - Muhammad Waseem Khan
- Institute of Pharmaceutical Sciences, Khyber Medical University, Peshawar 25000, Pakistan;
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Čuříková BA, Procházková K, Filková B, Diblíková P, Svoboda J, Kováčik A, Vávrová K, Zbytovská J. Simplified stratum corneum model membranes for studying the effects of permeation enhancers. Int J Pharm 2017; 534:287-296. [PMID: 29061325 DOI: 10.1016/j.ijpharm.2017.10.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 10/17/2017] [Accepted: 10/19/2017] [Indexed: 01/10/2023]
Abstract
The activity of transdermal permeation enhancers is usually evaluated in vitro on human or animal skin, but skin samples can be hard to source and highly variable. To provide a more consistent basis for evaluating the activity of permeation enhancers, we prepared relatively simple and inexpensive artificial membranes that imitate the stratum corneum (SC) lipid matrix. Our membranes were composed of stearic acid, cholesterol, cholesterol sulfate and a ceramide (CER) component consisting of N-2-hydroxystearoyl phytosphingosine (CER[AP]) and/or N-stearoyl phytosphingosine (CER[NP]). First, the permeation of theophylline (TH) and indomethacin (IND) through these membranes was compared with their permeation through porcine skin. Because the mixed CER[AP]/[NP] membrane gave the closest results to skin, this membrane was then used to test the effects of two permeation enhancers: N-dodecyl azepan-2-one (Azone) and (S)-N-acetylproline dodecyl ester (L-Pro2). Both enhancers significantly increased the flux of TH and IND through the skin and, even more markedly, through the lipid membrane, L-Pro2 having a stronger effect than Azone. Thus, our simplified model of the SC lipid membrane based on phytosphingosine CERs appears to be suitable for mimicking skin permeation.
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Affiliation(s)
- Barbora Amélie Čuříková
- University of Chemistry and Technology Prague, Faculty of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Kamila Procházková
- University of Chemistry and Technology Prague, Faculty of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Barbora Filková
- University of Chemistry and Technology Prague, Faculty of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Petra Diblíková
- University of Chemistry and Technology Prague, Faculty of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Jan Svoboda
- University of Chemistry and Technology Prague, Faculty of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Andrej Kováčik
- Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Kateřina Vávrová
- Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Jarmila Zbytovská
- University of Chemistry and Technology Prague, Faculty of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic; Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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7
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Solid nanoemulsion as antigen and immunopotentiator carrier for transcutaneous immunization. Cell Immunol 2016; 308:35-43. [DOI: 10.1016/j.cellimm.2016.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 05/06/2016] [Accepted: 06/01/2016] [Indexed: 01/17/2023]
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Viljoen JM, Cowley A, du Preez J, Gerber M, du Plessis J. Penetration enhancing effects of selected natural oils utilized in topical dosage forms. Drug Dev Ind Pharm 2015; 41:2045-54. [DOI: 10.3109/03639045.2015.1047847] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Overview and appraisal of the current concept and technologies for improvement of sublingual drug delivery. Ther Deliv 2014; 5:807-16. [DOI: 10.4155/tde.14.50] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Sublingual drug delivery is capable of achieving high bioavailability by avoiding first-pass liver extraction and enzymatic degradation in the gastrointestinal tract, as well as achieving rapid onset of effect. Thus, this route of administration can offer attractive therapeutic advantages for certain drugs as a convenient substitute for parenteral administration and has been applied successfully to a number of therapeutic conditions, especially urgent cardiovascular conditions and acute severe pain control. However, due to inherent limitations such as small sublingual mucosa area for absorption, primarily passive mechanism of transport, short residence time, and potential local irritation, a relatively small number of sublingual products have been successfully developed to date. In this Review, key concepts and technologies for potential improvement of sublingual drug delivery are reviewed. The optimal application of these concepts and technologies, together with clinical need for non-parenteral delivery, will hopefully broaden the development of sublingual drug delivery in the future.
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Desai PR, Marepally S, Patel AR, Voshavar C, Chaudhuri A, Singh M. Topical delivery of anti-TNFα siRNA and capsaicin via novel lipid-polymer hybrid nanoparticles efficiently inhibits skin inflammation in vivo. J Control Release 2013; 170:51-63. [PMID: 23643662 DOI: 10.1016/j.jconrel.2013.04.021] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 04/15/2013] [Accepted: 04/25/2013] [Indexed: 02/06/2023]
Abstract
The barrier properties of the skin pose a significant but not insurmountable obstacle for development of new effective anti-inflammatory therapies. The objective of this study was to design and evaluate therapeutic efficacy of anti-nociception agent Capsaicin (Cap) and anti-TNFα siRNA (siTNFα) encapsulated cyclic cationic head lipid-polymer hybrid nanocarriers (CyLiPns) against chronic skin inflammatory diseases. Physico-chemical characterizations including hydrodynamic size, surface potential and entrapment efficacies of CyLiPns were found to be 163±9nm, 35.14±8.23mV and 92% for Cap, respectively. In vitro skin distribution studies revealed that CyLiPns could effectively deliver FITC-siRNA up to 360μm skin depth. Further, enhanced (p<0.001) Cap permeation from CyLiPns was observed compared to Capsaicin-Solution and Capzasin-HP. Therapeutic efficacies of CyLiPns were assessed using imiquamod-induced psoriatic plaque like model. CyLiPns carrying both Cap and siTNFα showed significant reduced expression of TNFα, NF-κB, IL-17, IL-23 and Ki-67 genes compared to either drugs alone (p<0.05) and were in close comparison with Topgraf®. Collectively these findings support our notion that novel cationic lipid-polymer hybrid nanoparticles can efficiently carry siTNFα and Cap into deeper dermal milieu and Cap with a combination of siTNFα shows synergism in treating skin inflammation.
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Affiliation(s)
- Pinaki R Desai
- College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, Tallahassee 32307, USA
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11
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Cid YP, Pedrazzi V, de Sousa VP, Pierre MBR. In vitro characterization of chitosan gels for buccal delivery of celecoxib: influence of a penetration enhancer. AAPS PharmSciTech 2012; 13:101-11. [PMID: 22160883 DOI: 10.1208/s12249-011-9725-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Accepted: 11/04/2011] [Indexed: 02/06/2023] Open
Abstract
Celecoxib (Cx) shows high efficacy in the treatment of osteoarthritis and rheumatoid arthritis as a result of its high specificity for COX-2, without gastrolesivity or interference with platelet function at therapeutic concentrations. Besides of anti-inflammatory effects, Cx also has a potential role for oral cancer chemoprevention. For these conditions, oral administration in long-term treatment is a concern due to its systemic side effects. However, local application at the site of injury (e.g., buccal inflammation conditions or chemoprevention of oral cancer) is a promising way to reduce its toxicity. In this study, the in vitro characterization of mucoadhesive chitosan (CHT) gels associated to Azone® was assessed to explore the potential buccal mucosal administration of Cx in this tissue. Rheological properties of gels were analyzed by a rheometer with cone-plate geometry. In vitro Cx release and permeability studies used artificial membranes and pig cheek mucosa, respectively. Mucoadhesion were measured with a universal test machine. CHT gels (3.0%) containing 2.0% or 3.0% Az showed more appropriate characteristics compared to the others: pH values, rheology, higher amount of Cx retained in the mucosa, and minimal permeation through mucosa, besides the highest mucoadhesion values, ideal for buccal application. Moreover, the flux (J) and amounts of drug released decreased with increased CHT and Az concentrations. CHT gels (3.0%) associated with 2.0% or 3.0% Az may be considered potential delivery systems for buccal administration of Cx.
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12
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Brychtova K, Dvorakova L, Opatrilova R, Raich I, Kacerova S, Placek L, Kalinowski DS, Richardson DR, Jampilek J. Investigation of substituted 6-aminohexanoates as skin penetration enhancers. Bioorg Med Chem 2011; 20:86-95. [PMID: 22172311 DOI: 10.1016/j.bmc.2011.11.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 11/13/2011] [Accepted: 11/16/2011] [Indexed: 10/15/2022]
Abstract
Skin penetration enhancers are compounds used to facilitate the transdermal delivery of drugs that are otherwise not sufficiently permeable. Through a synthetic route implementing two series of esters, we generated transdermal penetration enhancers by a multi-step reaction with substituted 6-aminohexanoic acid. We present the synthesis of all newly prepared compounds here with structural confirmation accomplished by (1)H NMR, (13)C NMR, IR and mass spectroscopy (MS). The lipophilicity (logk) of all compounds was determined via RP-HPLC and their hydrophobicity (logP/ClogP) was also calculated using two commercially available programs. Ab initio calculations of geometry and molecular dynamic simulations were employed to investigate the 3-dimensional structures of selected compounds. The transdermal penetration-enhancing activity of all the synthesized esters were examined in vitro and demonstrated higher enhancement ratios than oleic acid. Compounds 2e (C(10) ester chain) and 2f (C(11) ester chain) exhibited the highest enhancement ratios. It can be concluded that the series non-substituted at the C((2)) position by a ω-lactam ring showed significantly higher activity than those with azepan-2-one. None of the prepared compounds penetrated through the skin. All of the investigated agents demonstrated minimal anti-proliferative activity using the SK-N-MC neuroepithelioma cell line (IC(50)>6.25μM), suggesting these analogs would have a low cytotoxic profile when administered in vivo as chemical penetration enhancers. The correlation between the chemical structure of the studied compounds and their lipophilicity is discussed in regards to transdermal penetration-enhancing activity.
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Affiliation(s)
- Katerina Brychtova
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, 612 42 Brno, Czech Republic
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13
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Brychtova K, Opatrilova R, Raich I, Kalinowski DS, Dvorakova L, Placek L, Csollei J, Richardson DR, Jampilek J. Investigating the activity of 2-substituted alkyl-6-(2,5-dioxopyrrolidin-1-yl)hexanoates as skin penetration enhancers. Bioorg Med Chem 2010; 18:8556-65. [DOI: 10.1016/j.bmc.2010.10.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 10/08/2010] [Accepted: 10/11/2010] [Indexed: 10/18/2022]
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14
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Jampilek J, Brychtova K. Azone analogues: classification, design, and transdermal penetration principles. Med Res Rev 2010; 32:907-47. [DOI: 10.1002/med.20227] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Josef Jampilek
- Department of Chemical Drugs, Faculty of Pharmacy; University of Veterinary and Pharmaceutical Sciences Brno; Palackeho 1-3 612 42 Brno Czech Republic
- Zentiva k.s., U kabelovny 130; 102 37 Prague 10 Czech Republic
| | - Katerina Brychtova
- Department of Chemical Drugs, Faculty of Pharmacy; University of Veterinary and Pharmaceutical Sciences Brno; Palackeho 1-3 612 42 Brno Czech Republic
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15
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Topical drug delivery by a polymeric nanosphere gel: Formulation optimization and in vitro and in vivo skin distribution studies. J Control Release 2010; 149:159-67. [PMID: 20950659 DOI: 10.1016/j.jconrel.2010.10.005] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 08/26/2010] [Accepted: 10/04/2010] [Indexed: 11/22/2022]
Abstract
Tyrosine-derived nanospheres have demonstrated potential as effective carriers for the topical delivery of lipophilic molecules. In this investigation, a gel formulation containing nanospheres was developed for effective skin application and enhanced permeation. Carbopol and HPMC hydrophilic gels were evaluated for dispersion of these nanospheres. Sparingly water soluble diclofenac sodium (DS) and lipophilic Nile Red were used as model compounds. DS was used to determine the optimum polymer type, viscosity and release properties of the gel while fluorescent Nile Red was used in in vitro and in vivo skin distribution studies. In addition, the effect of a penetration enhancer, Azone, on the skin delivery was investigated. Dispersion of Nile Red-loaded nanospheres in 1% w/v HPMC gel produced a uniform and stable dispersion with suitable rheological properties for topical application, without any short-term cellular toxicity or tissue irritation. In vitro permeation studies using human cadaver skin revealed that the deposition of Nile Red via the nanosphere gel in the upper and lower dermis was 1.4 and 1.8 fold higher, respectively, than the amount of Nile Red deposited via an aqueous nanosphere formulation. In vivo, the HPMC gel containing Nile Red-loaded nanospheres significantly enhanced (1.4 fold) the permeation of Nile Red to the porcine stratum corneum/epidermis compared to the aqueous Nile Red-loaded nanospheres. An additional increase (1.4 fold) of Nile Red deposition in porcine stratum corneum/epidermis was achieved by incorporation of Azone (0.2M) into the nanosphere gel formulation. Therefore, tyrosine-derived nanospheres dispersed in gels offer promise for the topical delivery of lipophilic drugs and personal care agents to skin for treatment of cancers, psoriasis, eczema, and microbial infections.
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Balaguer-Fernández C, Padula C, Femenía-Font A, Merino V, Santi P, López-Castellano A. Development and evaluation of occlusive systems employing polyvinyl alcohol for transdermal delivery of sumatriptan succinate. Drug Deliv 2010; 17:83-91. [DOI: 10.3109/10717540903509019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Hasanovic A, Zehl M, Reznicek G, Valenta C. Chitosan-tripolyphosphate nanoparticles as a possible skin drug delivery system for aciclovir with enhanced stability. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.12.0004] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The aim of the present study was to create a skin delivery system based on chitosan-tripolyphosphate nanoparticles for aciclovir with enhanced chemical stability.
Methods
Nanoparticles were formed spontaneously using ionotropic gelation with tripolyphosphate. Two different sizes of aciclovir-loaded nanoparticles were characterised in terms of zeta potential, particle size and polydispersity index.
Key findings
Standard diffusion experiments using Franz-type diffusion cells showed reasonable skin permeability that depended on particle size and chitosan content. The larger the nanoparticle, having a higher chitosan content, the better the aciclovir permeation through porcine skin. Differential scanning calorimetry studies showed a remarkable decrease in the typical transition temperature, indicating an interaction between skin lipid bilayer and the nanoparticles. Moreover, the chemical stability of aciclovir was significantly increased by the nanoparticle system. After the observation period of 5 weeks, aciclovir incorporated into nanoparticles had undergone photo-oxidation to a significantly lower extent than pure aqueous solution. This degradation product of aciclovir was analysed using LC/MS, and its identity established.
Conclusions
These studies demonstrate that incorporation of aciclovir into chitosan-tripolyphosphate nanoparticles significantly improves its chemical stability. Moreover, skin diffusion studies in vitro showed improved permeation of aciclovir from the nanoparticle system, especially from nanoparticles with higher chitosan content.
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Affiliation(s)
- Amra Hasanovic
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Vienna, Austria
| | - Martin Zehl
- Department of Pharmacognosy, University of Vienna, Vienna, Austria
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Brychtova K, Jampilek J, Opatrilova R, Raich I, Farsa O, Csollei J. Synthesis, physico-chemical properties and penetration activity of alkyl-6-(2,5-dioxopyrrolidin-1-yl)-2-(2-oxopyrrolidin-1-yl)hexanoates as potential transdermal penetration enhancers. Bioorg Med Chem 2010; 18:73-9. [DOI: 10.1016/j.bmc.2009.11.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2009] [Revised: 09/07/2009] [Accepted: 11/07/2009] [Indexed: 11/27/2022]
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