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Shi W, Xue H, Du T, Liu JL, Ling V, Wang Y, Ma Z, Gao ZH. Penetration enhancers strengthen tough hydrogel bioadhesion and modulate locoregional drug delivery. Biomater Sci 2024. [PMID: 39370988 DOI: 10.1039/d4bm00807c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2024]
Abstract
The human body possesses natural barriers, such as skin and mucosa, which limit the effective delivery of therapeutics and integration of medical devices to target tissues. Various strategies have been deployed to breach these barriers mechanically, chemically, or electronically. The development of various penetration enhancers (PEs) offers a promising solution due to their ability to increase tissue permeability using readily available reagents. However, existing PE-mediated delivery methods often rely on weak gel or liquid drug formulations, which are not ideal for sustained local delivery. Hydrogel adhesives that can seamlessly interface biological tissues with controlled drug delivery could potentially resolve these issues. Here, we demonstrate that tough adhesion between drug-laden hydrogels and biological tissue (e.g. skin and tumours) can lead to effective local delivery of drugs deep into targeted tissues by leveraging the enhanced tissue penetration mediated by PEs. The drug release profile of the hydrogel adhesives can be fine-tuned by further engineering the nanocomposite hydrogel matrix to elute chemotherapeutics from 2 weeks to 2 months. Using a 3D tumour spheroid model, we demonstrated that PEs increased the cancer-killing effectiveness of doxorubicin by facilitating its delivery into tumour microtissues. Therefore, the proposed tough bioadhesion and drug delivery strategy modulated by PEs holds promise as a platform technique to develop next-generation wearable and implantable devices for cancer management and regenerative medicine.
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Affiliation(s)
- Wenna Shi
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pharmacy, Shandong Cancer Hospital and Institute, Jinan, China
| | - Hui Xue
- Department of Experimental Medicine, BC Cancer Research Institute, Vancouver, Canada
| | - Tianwei Du
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- School of Biomedical Engineering, University of British Columbia, Vancouver, Canada
| | - Jun-Li Liu
- Department of Medicine, McGill University Health Centre Research Institute, Montreal, Canada
| | - Victor Ling
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
| | - Yuzhuo Wang
- Department of Experimental Medicine, BC Cancer Research Institute, Vancouver, Canada
| | - Zhenwei Ma
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
| | - Zu-Hua Gao
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
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Aizawa S, Yoshida H, Umeshita K, Watanabe S, Takahashi Y, Sakane S, Sakaguchi H, Kataoka S. Development of an oral mucosal irritation test using a three-dimensional human buccal oral mucosal model. Toxicol In Vitro 2023; 87:105519. [PMID: 36403724 DOI: 10.1016/j.tiv.2022.105519] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
The oral mucosa can become irritated by oral care products and lip cosmetics. Therefore, it is important to determine the irritation potential of their ingredients and products during safety evaluations. We developed a method for oral mucosal irritation test using EpiOral, which is a three-dimensional cultured model. Exposure of sodium lauryl sulphate (SLS) to EpiOral showed a dose-dependent decrease in cell viability. Under 120 min exposure conditions, SLS irritation was detected when 60% cell viability was set as a criterion. Evaluation of the irritancy of SLS and four other raw materials used in oral products at three laboratories under the above conditions confirmed good transferability of the test. Focused on the similarity of the oral and eye mucous, 32 chemicals categorised by the UN-GHS eye-irritation classification were evaluated to ensure the reliability of our criteria at these laboratories. The concordance rate between the UN-GHS classification and our test results was 100% for irritants and 60% for non-irritants. The good intra-laboratory reproducibility of our test was confirmed from the evaluation results of negative and positive controls, and the good inter-laboratory reproducibility was confirmed from the results of 32 chemicals. These findings showed that oral mucosal irritation can be evaluated using EpiOral.
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Affiliation(s)
- Seiya Aizawa
- Safety Science Research Laboratories, LION Corporation, Kanagawa, Japan.
| | - Hidenori Yoshida
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | | | - Shinichi Watanabe
- Safety Science Research Laboratories, LION Corporation, Kanagawa, Japan
| | - Yutaka Takahashi
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Shinji Sakane
- Safety & Analysis, R&D Support, Sunstar Inc., Osaka, Japan
| | - Hitoshi Sakaguchi
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Shinsuke Kataoka
- Safety Science Research Laboratories, LION Corporation, Kanagawa, Japan
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Kimoto H, Ito Y, Matsumoto S, Hosoki E. A simple method for oral mucosal irritation test by intraoral instillation in rats. J Toxicol Sci 2016; 41:233-9. [DOI: 10.2131/jts.41.233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Hiroki Kimoto
- Department of Toxicology, Drug Safety Research Center, Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd
| | - Yuko Ito
- Department of Toxicology, Drug Safety Research Center, Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd
| | - Satoshi Matsumoto
- Department of Toxicology, Drug Safety Research Center, Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd
| | - Eiji Hosoki
- Department of Toxicology, Drug Safety Research Center, Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd
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Bondi CAM, Marks JL, Wroblewski LB, Raatikainen HS, Lenox SR, Gebhardt KE. Human and Environmental Toxicity of Sodium Lauryl Sulfate (SLS): Evidence for Safe Use in Household Cleaning Products. ENVIRONMENTAL HEALTH INSIGHTS 2015; 9:27-32. [PMID: 26617461 PMCID: PMC4651417 DOI: 10.4137/ehi.s31765] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 08/24/2015] [Accepted: 08/26/2015] [Indexed: 05/19/2023]
Abstract
Environmental chemical exposure is a major concern for consumers of packaged goods. The complexity of chemical nomenclature and wide availability of scientific research provide detailed information but lends itself to misinterpretation by the lay person. For the surfactant sodium lauryl sulfate (SLS), this has resulted in a misunderstanding of the environmental health impact of the chemical and statements in the media that are not scientifically supported. This review demonstrates how scientific works can be misinterpreted and used in a manner that was not intended by the authors, while simultaneously providing insight into the true environmental health impact of SLS. SLS is an anionic surfactant commonly used in consumer household cleaning products. For decades, this chemical has been developing a negative reputation with consumers because of inaccurate interpretations of the scientific literature and confusion between SLS and chemicals with similar names. Here, we review the human and environmental toxicity profiles of SLS and demonstrate that it is safe for use in consumer household cleaning products.
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Affiliation(s)
- Cara AM Bondi
- Research and Development, Seventh Generation Inc., Burlington, VT, USA
| | - Julia L Marks
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | | | | | - Shannon R Lenox
- Research and Development, Seventh Generation Inc., Burlington, VT, USA
| | - Kay E Gebhardt
- Research and Development, Seventh Generation Inc., Burlington, VT, USA
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Omar RF, Bergeron MG. The future of microbicides. Int J Infect Dis 2011; 15:e656-60. [PMID: 21705253 DOI: 10.1016/j.ijid.2011.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 04/21/2011] [Accepted: 05/02/2011] [Indexed: 11/18/2022] Open
Abstract
There is an urgent need to develop vaginal microbicides to empower women to better control their own sexual life and to protect themselves against HIV and other sexually transmitted infections (STIs). Prevention of STIs with its 330 million cases a year would have a great global health impact. Because of their anatomy, women are up to 8 times more susceptible than men to STIs including HIV. Women who can't negotiate condom use with their male partners have no means of protecting themselves from these infections. In the last few years, especially after the recent failures of several microbicides in Phase III trials, there was increasing pressure from those favoring the use of a more targeted approach to introduce marketed antiretroviral drugs (ARVs) into microbicides. This Pre-Exposure Prophylaxis (PrEP) concept which targets only HIV using specific ARVs contrasts with the primary approach of broad spectrum microbicides which aimed at offering universal protection against several sexually transmitted pathogens. However, before using ARVs as PrEP for HIV prevention, there are still many important issues to consider. In this article, we compare both strategies, while reviewing the last 15 years of microbicide research and its future.
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Affiliation(s)
- Rabeea F Omar
- Infectious Diseases Research Centre and Faculty of Medicine, Université Laval, Centre Hospitalier de l'Université Laval, CHUQ, 2705 Boulevard Laurier, RC-709, Québec, QC, Canada, G1 V 4G2
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A randomized, double-blind, placebo-controlled Phase II extended safety study of two Invisible Condom® formulations in Cameroonian women. Contraception 2010; 81:79-85. [DOI: 10.1016/j.contraception.2009.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Revised: 06/30/2009] [Accepted: 07/07/2009] [Indexed: 11/22/2022]
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Mbopi-Keou FX, Trottier S, Omar RF, Nkele NN, Fokoua S, Mbu ER, Giguere JF, Domingo MC, Piret J, Tsague L, Zekeng L, Mwatha A, Mâsse B, Bergeron MG. A randomized, double-blind, placebo-controlled safety and acceptability study of two Invisible Condom® formulations in women from Cameroon. Contraception 2009; 80:484-92. [DOI: 10.1016/j.contraception.2009.03.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Revised: 03/05/2009] [Accepted: 03/31/2009] [Indexed: 11/16/2022]
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