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Zingale E, Bonaccorso A, D’Amico AG, Lombardo R, D’Agata V, Rautio J, Pignatello R. Formulating Resveratrol and Melatonin Self-Nanoemulsifying Drug Delivery Systems (SNEDDS) for Ocular Administration Using Design of Experiments. Pharmaceutics 2024; 16:125. [PMID: 38258134 PMCID: PMC10819881 DOI: 10.3390/pharmaceutics16010125] [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: 11/29/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Recent studies have demonstrated that Sirtuin-1 (SIRT-1)-activating molecules exert a protective role in degenerative ocular diseases. However, these molecules hardly reach the back of the eye due to poor solubility in aqueous environments and low bioavailability after topical application on the eye's surface. Such hindrances, combined with stability issues, call for the need for innovative delivery strategies. Within this context, the development of self-nanoemulsifying drug delivery systems (SNEDDS) for SIRT-1 delivery can represent a promising approach. The aim of the work was to design and optimize SNEDDS for the ocular delivery of two natural SIRT-1 agonists, resveratrol (RSV) and melatonin (MEL), with potential implications for treating diabetic retinopathy. Pre-formulation studies were performed by a Design of Experiment (DoE) approach to construct the ternary phase diagram. The optimization phase was carried out using Response Surface Methodology (RSM). Four types of SNEDDS consisting of different surfactants (Tween® 80, Tween® 20, Solutol® HS15, and Cremophor® EL) were optimized to achieve the best physico-chemical parameters for ocular application. Stability tests indicated that SNEDDS produced with Tween® 80 was the formulation that best preserved the stability of molecules, and so it was, therefore, selected for further technological studies. The optimized formulation was prepared with Capryol® PGMC, Tween® 80, and Transcutol® P and loaded with RSV or MEL. The SNEDDS were evaluated for other parameters, such as the mean size (found to be ˂50 nm), size homogeneity (PDI < 0.2), emulsion time (around 40 s), transparency, drug content (>90%), mucoadhesion strength, in vitro drug release, pH and osmolarity, stability to dilution, and cloud point. Finally, an in vitro evaluation was performed on a rabbit corneal epithelial cell line (SIRC) to assess their cytocompatibility. The overall results suggest that SNEDDS can be used as promising nanocarriers for the ocular drug delivery of RSV and MEL.
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Affiliation(s)
- Elide Zingale
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (E.Z.); (A.B.); (R.L.)
- NANOMED—Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
| | - Angela Bonaccorso
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (E.Z.); (A.B.); (R.L.)
- NANOMED—Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
| | - Agata Grazia D’Amico
- Department of Drug and Health Sciences, Section of Systems Biology, University of Catania, Viale A. Doria 6, 95125 Catania, Italy;
| | - Rosamaria Lombardo
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (E.Z.); (A.B.); (R.L.)
| | - Velia D’Agata
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Sciences, University of Catania, 95100 Catania, Italy;
| | - Jarkko Rautio
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1C, 70210 Kuopio, Finland;
| | - Rosario Pignatello
- Laboratory of Drug Delivery Technology, Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (E.Z.); (A.B.); (R.L.)
- NANOMED—Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
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Abdalkader RK, Fujita T. Corneal epithelium models for safety assessment in drug development: Present and future directions. Exp Eye Res 2023; 237:109697. [PMID: 37890755 DOI: 10.1016/j.exer.2023.109697] [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: 06/30/2022] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
The human corneal epithelial barrier plays a crucial role in drug testing studies, including drug absorption, distribution, metabolism, and excretion (ADME), as well as toxicity testing during the preclinical stages of drug development. However, despite the valuable insights gained from animal and current in vitro models, there remains a significant discrepancy between preclinical drug predictions and actual clinical outcomes. Additionally, there is a growing emphasis on adhering to the 3R principles (refine, reduce, replace) to minimize the use of animals in testing. To tackle these challenges, there is a rising demand for alternative in vitro models that closely mimic the human corneal epithelium. Recently, remarkable advancements have been made in two key areas: microphysiological systems (MPS) or organs-on-chips (OoCs), and stem cell-derived organoids. These cutting-edge platforms integrate four major disciplines: stem cells, microfluidics, bioprinting, and biosensing technologies. This integration holds great promise in developing powerful and biomimetic models of the human cornea.
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Affiliation(s)
- Rodi Kado Abdalkader
- Ritsumeikan Global Innovation Research Organization (R-GIRO), Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Takuya Fujita
- Ritsumeikan Global Innovation Research Organization (R-GIRO), Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan; Department of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan
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Zhong C, Wanasathop A, Shi Z, Ananthapadmanabhan K, Li SK. Evaluation of in vitro cornea models for quantifying destructive effects of chemicals. Toxicol In Vitro 2022; 85:105462. [PMID: 36031007 DOI: 10.1016/j.tiv.2022.105462] [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: 03/27/2022] [Revised: 08/02/2022] [Accepted: 08/21/2022] [Indexed: 10/15/2022]
Abstract
In vitro models are available as alternatives for the Draize eye irritation test. However, most of the alternative models are not quantitative nor designed to evaluate the effects of chemicals on the corneal barrier such as those encountered in pharmaceutical and cosmetic products. The objective of the present study was to investigate tissue electrical resistance to provide sensitive in vitro testing of tissue alteration caused by chemicals in pharmaceutical and cosmetic formulations as a potential eye irritation testing approach. The experimental protocols for effective tissue resistance measurements were examined using two in vitro eye models: porcine cornea and EpiCorneal. In these models, a test chemical was applied to the cornea or EpiCorneal tissue for 1 min, and tissue resistances/conductances were measured at 1-60 min after the application. The changes in conductance of the tissues after exposure to the chemicals were shown to provide quantitative evaluations to the influence of the chemicals. A correlation was found between the two in vitro models. The results suggest that these models can provide quantitative in vitro assessments of chemical formulations such as those prepared by eye-irritating chemicals.
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Affiliation(s)
- Cheng Zhong
- Division of Pharmaceutical Sciences, James L Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, United States of America
| | - Apipa Wanasathop
- Division of Pharmaceutical Sciences, James L Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, United States of America
| | - Zhanquan Shi
- Division of Pharmaceutical Sciences, James L Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, United States of America
| | - Kavssery Ananthapadmanabhan
- Division of Pharmaceutical Sciences, James L Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, United States of America
| | - S Kevin Li
- Division of Pharmaceutical Sciences, James L Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, United States of America.
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Sorafenib Repurposing for Ophthalmic Delivery by Lipid Nanoparticles: A Preliminary Study. Pharmaceutics 2021; 13:pharmaceutics13111956. [PMID: 34834371 PMCID: PMC8622456 DOI: 10.3390/pharmaceutics13111956] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 12/29/2022] Open
Abstract
Uveal melanoma is the second most common melanoma and the most common intraocular malignant tumour of the eye. Among various treatments currently studied, Sorafenib was also proposed as a promising drug, often administered with other compounds in order to avoid resistance mechanisms. Despite its promising cellular activities, the use of Sorafenib by oral administration is limited by its severe side effects and the difficulty to reach the target. The encapsulation into drug delivery systems represents an interesting strategy to overcome these limits. In this study, different lipid nanoparticulate formulations were prepared and compared in order to select the most suitable for the encapsulation of Sorafenib. In particular, two solid lipids (Softisan or Suppocire) at different concentrations were used to produce solid lipid nanoparticles, demonstrating that higher amounts were able to achieve smaller particle sizes, higher homogeneity, and longer physical stability. The selected formulations, which demonstrated to be biocompatible on Statens Seruminstitut Rabbit Cornea cells, were modified to improve their mucoadhesion, evaluating the effect of two monovalent cationic lipids with two lipophilic chains. Sorafenib encapsulation allowed obtaining a sustained and prolonged drug release, thus confirming the potential use of the developed strategy to topically administer Sorafenib in the treatment of uveal melanoma.
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Assessment of a New Nanostructured Microemulsion System for Ocular Delivery of Sorafenib to Posterior Segment of the Eye. Int J Mol Sci 2021; 22:ijms22094404. [PMID: 33922399 PMCID: PMC8122816 DOI: 10.3390/ijms22094404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 12/12/2022] Open
Abstract
Eye drop formulations allowing topical treatment of retinal pathologies have long been sought as alternatives to intravitreal administration. This study aimed to assess whether a novel nanostructured microemulsions system (NaMESys) could be usefully employed to deliver sorafenib to the retina following topical instillation. NaMESys carrying 0.3% sorafenib (NaMESys-SOR) proved to be cytocompatible in vitro on rabbit corneal cells, and well-tolerated following b.i.d. ocular administration to rabbits during a 3-month study. In rats subject to retinal ischemia-reperfusion, NaMESys-SOR significantly inhibited retinal expression of tumor necrosis factor-alpha (TNFα, 20.7%) and inducible nitric oxide synthase (iNos, 87.3%) mRNAs in comparison to controls. Similarly, in streptozotocin-induced diabetic rats, NaMESys-SOR inhibited retinal expression of nuclear factor kappa B (NFκB), TNFα, insulin like growth factor 1 (IGF1), IGF1 receptor (IGF1R), vascular endothelial growth factor receptor 1 (VEGFR1) and 2 (VEGFR2) mRNAs by three-fold on average compared to controls. Furthermore, a reduction in TNFα, VEGFR1 and VEGFR2 protein expression was observed by western blot. Moreover, in mice subject to laser-induced choroidal neovascularization, NaMESys-SOR significantly inhibited neovascular lesions by 54%. In conclusion, NaMESys-SOR was shown to be a well-tolerated ophthalmic formulation able to deliver effective amounts of sorafenib to the retina, reducing proinflammatory and pro-angiogenic mediators in reliable models of proliferative retinopathies. These findings warrant further investigations on the full therapeutic potential of NaMESys-SOR eye drops, aiming to address unmet needs in the pharmacotherapy of retinal neovascular diseases.
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Lebrun S, Nguyen L, Chavez S, Chan R, Le D, Nguyen M, Jester JV. Same-chemical comparison of nonanimal eye irritation test methods: Bovine corneal opacity and permeability, EpiOcular™, isolated chicken eye, ocular Irritection®, OptiSafe™, and short time exposure. Toxicol In Vitro 2021; 72:105070. [PMID: 33352259 PMCID: PMC8544240 DOI: 10.1016/j.tiv.2020.105070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 11/21/2022]
Abstract
The testing and classification of chemicals to determine adverse ocular effects are routinely conducted to ensure that materials are appropriately classified, labeled, and meet regulatory and safety guidelines. We have performed a same-chemical analysis using publicly available validation study results and compared the performance between tests for the same chemicals. To normalize for chemical selection, we matched chemicals tested by pairs of tests so that each matched set compared performance for the exact same chemicals. Same-chemical accuracy comparisons demonstrate a chemical selection effect that results in a wide range of overlapping false-positive (FP) rates and accuracies for all test methods. In addition, the analysis suggests that a tiered-testing strategy with specific combinations of tests can reduce the FP rate for some combinations. However, reductions in the FP rates were typically accompanied by an increase in the false-negative rates, resulting in minimal advantage in terms of accuracy. In addition, actual improvements in the FP rate after retesting positives with a second test are not as good as the theoretical improvements because some chemicals and functional groups appear to be broadly misclassified by all test methods, which, to the extent the tests make the same-chemical misclassifications, reduces the advantage of using tiered-testing strategies.
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Affiliation(s)
| | | | | | | | - Debby Le
- Lebrun Labs LLC, Anaheim, CA, USA
| | | | - James V Jester
- Department of Ophthalmology and Biomedical Engineering, University of California Irvine, Irvine, CA, USA
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7
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In vitro reconstructed 3D corneal tissue models for ocular toxicology and ophthalmic drug development. In Vitro Cell Dev Biol Anim 2021; 57:207-237. [PMID: 33544359 DOI: 10.1007/s11626-020-00533-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022]
Abstract
Testing of all manufactured products and their ingredients for eye irritation is a regulatory requirement. In the last two decades, the development of alternatives to the in vivo Draize eye irritation test method has substantially advanced due to the improvements in primary cell isolation, cell culture techniques, and media, which have led to improved in vitro corneal tissue models and test methods. Most in vitro models for ocular toxicology attempt to reproduce the corneal epithelial tissue which consists of 4-5 layers of non-keratinized corneal epithelial cells that form tight junctions, thereby limiting the penetration of chemicals, xenobiotics, and pharmaceuticals. Also, significant efforts have been directed toward the development of more complex three-dimensional (3D) equivalents to study wound healing, drug permeation, and bioavailability. This review focuses on in vitro reconstructed 3D corneal tissue models and their utilization in ocular toxicology as well as their application to pharmacology and ophthalmic research. Current human 3D corneal epithelial cell culture models have replaced in vivo animal eye irritation tests for many applications, and substantial validation efforts are in progress to verify and approve alternative eye irritation tests for widespread use. The validation of drug absorption models and further development of models and test methods for many ophthalmic and ocular disease applications is required.
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Ko KY, Jeon HL, Kim J, Kim TS, Hong YH, Jeong MK, Park KH, Kim BH, Park S, Jang WH, Cho SA, An S, Cho AR, Yi JS, Kim JY, Kim H, Lee JK, Park KS. Two tiered approaches combining alternative test methods and minimizing the use of reconstructed human cornea-like epithelium tests for the evaluation of eye irritation potency of test chemicals. Toxicol In Vitro 2019; 63:104675. [PMID: 31648046 DOI: 10.1016/j.tiv.2019.104675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 05/04/2019] [Accepted: 10/01/2019] [Indexed: 11/29/2022]
Abstract
In order to overcome the limitations of single in vitro eye irritation tests, Integrated Approaches to Testing Assessment strategies have been suggested for evaluating eye irritation. This study developed two tiered approaches combining alternative test methods. They were designed in consideration of the solubility property of test chemicals and to use the RhCE tests at final steps. The tiered approach A is composed of the STE, BCOP, HET-CAM or RhCE tests, whereas the tiered approach B is designed to perform simultaneously two in vitro test methods at the first stage and the RhCE test at the final stage. The predictive capacity of the two tiered approaches was estimated using 47 chemicals. The accuracy, sensitivity, and specificity value of the tiered approach A were 95.7% (45/47), 100% (34/34), and 84.6% (11/13), respectively, whereas those of the tiered approach B were 95.7% (45/47), 97.1% (33/34), and 92.3% (12/13), respectively. The approach A and B were considered to be available methods for distinguishing test chemicals of Category 1 (all 73.3%) and No Category (84.6% and 92.3%), respectively. Especially, the approach B was considered as an efficient method as the Bottom-Up approach, because it predicted correctly test chemicals classified as No Category.
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Affiliation(s)
- Kyung Yuk Ko
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Hye Lyun Jeon
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Joohwan Kim
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Tae Sung Kim
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Yoon-Hee Hong
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Mi Kyung Jeong
- Major in Public Health, Faculty of Food and Health Sciences, Keimyung University, Daegu, Republic of Korea
| | - Kyo-Hyun Park
- Major in Public Health, Faculty of Food and Health Sciences, Keimyung University, Daegu, Republic of Korea
| | - Bae-Hwan Kim
- Major in Public Health, Faculty of Food and Health Sciences, Keimyung University, Daegu, Republic of Korea
| | - Sera Park
- AmorePacific R&D Center, Yongin-si, Republic of Korea
| | - Won-Hee Jang
- AmorePacific R&D Center, Yongin-si, Republic of Korea
| | - Sun-A Cho
- AmorePacific R&D Center, Yongin-si, Republic of Korea
| | - Susun An
- AmorePacific R&D Center, Yongin-si, Republic of Korea
| | - Ah Rang Cho
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Jung-Sun Yi
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Ji-Young Kim
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Hak Kim
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Jong Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Ki Sook Park
- Toxicological Screening & Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea.
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Joo KM, Kim S, Koo YJ, Lee M, Lee SH, Choi D, Lim KM. Development and validation of UPLC method for WST-1 cell viability assay and its application to MCTT HCE™ eye irritation test for colorful substances. Toxicol In Vitro 2019; 60:412-419. [PMID: 31247334 DOI: 10.1016/j.tiv.2019.06.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 06/05/2019] [Accepted: 06/21/2019] [Indexed: 11/18/2022]
Abstract
WST-1 [Water Soluble Tetrazolium-1; 2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium, monosodium salt)] is widely used in the cell viability assays replacing MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide). A water-soluble formazan dye (4-[1-(4-Iodophenyl)-5-(4-nitrophenyl)formaz-3-yl]-1,3-benzene disulfonate, disodium salt) is produced from the reduction of WST-1 tetrazolium, of which optical density at 450 nm is measured to evaluate cell viability. Colorful substances may interfere with spectrometric measurement, and a method to specifically detect WST-1 formazan is required. Here, a simple, rapid, sensitive, and specific ultra-performance liquid chromatography coupled to UV detector (UPLC-UV) was developed and validated for the WST-1 formazan. For the application to cell viability assay, the supernatant from WST-1 assay was injected without sample preparation procedure and a single run was completed within 5 min. Chromatographic separation was achieved on BEH C18 column (1.7 μm, 2.1 × 50 mm) using gradient elution with the mobile phase of water and acetonitrile. The standard curves were linear over the concentration range of 2.5-120 μg/mL WST-1 formazan, which encompasses WST-1 formazan concentrations from 2% cell viability to 2 fold of 100% cell viability. The intra- and inter-day precisions were measured to be below 5% and accuracies were within the range of 91.8-104.9%. The validated method was successfully applied to the test of colorful substances in vitro eye irritation test with a human cornea-like epithelium, and in vitro cytotoxicity in HaCaT, human keratinocyte cell line.
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Affiliation(s)
- Kyung-Mi Joo
- AMOREPACIFIC CO/R&D Center, Gyeonggi-do, Republic of Korea
| | | | - Ye Ji Koo
- Department of Public Health Science, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Miri Lee
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | | | - Dalwoong Choi
- Department of Public Health Science, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea.
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da Silva ACG, Chialchia AR, de Ávila RI, Valadares MC. Mechanistic-based non-animal assessment of eye toxicity: Inflammatory profile of human keratinocytes cells after exposure to eye damage/irritant agents. Chem Biol Interact 2018; 292:1-8. [DOI: 10.1016/j.cbi.2018.06.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 06/11/2018] [Accepted: 06/24/2018] [Indexed: 11/29/2022]
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11
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Predictive performance and inter-laboratory reproducibility in assessing eye irritation potential of water- and oil-soluble mixtures using the Short Time Exposure test method. Toxicol In Vitro 2018; 48:78-85. [DOI: 10.1016/j.tiv.2017.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 11/07/2017] [Accepted: 12/28/2017] [Indexed: 11/17/2022]
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12
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Lee M, Nam KT, Kim J, Lim SE, Yeon SH, Lee B, Lee JY, Lim KM. Evaluation of ocular irritancy of coal-tar dyes used in cosmetics employing reconstructed human cornea-like epithelium and short time exposure tests. Food Chem Toxicol 2017; 108:236-243. [PMID: 28780157 DOI: 10.1016/j.fct.2017.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 07/20/2017] [Accepted: 08/01/2017] [Indexed: 10/19/2022]
Abstract
Coal-tar dyes in cosmetics may elicit adverse effects in the skin and eyes. Countries, like the US, have banned the use of coal-tar dyes in cosmetics for the eye area due to the potential for ocular irritation. We evaluated the eye irritation potential of 15 coal-tar dyes permitted as cosmetic ingredients in reconstructed human cornea-like epithelium (RhCEs [EpiOcular™ and MCTT HCE™]) tests and the short time exposure (STE) test. Eosin YS, phloxine B, tetrachlorotetrabromofluorescein, and tetrabromofluorescein were identified as irritants in RhCEs; dibromofluorescein and uranine yielded discrepant results. STE enabled further classification in accordance with the UN Globally Harmonized System of Classification and Labelling of Chemicals, as follows: eosin YS as Cat 2; phloxine B, Cat 1; and tetrachlorotetrabromofluorescein and tetrabromofluorescein, Cat 1/2. STE indicated dibromofluorescein (irritant in EpiOcular™) and uranine (irritant in MCTT HCE™) as No Cat, resulting in the classification of "No prediction can be made." based on bottom-up approach with each model. These results demonstrated that in vitro eye irritation tests can be utilized to evaluate the potential ocular irritancy of cosmetic ingredients and provide significant evidence with which to determine whether precautions should be given for the use of coal-tar dyes in cosmetics or other substances applied to the eye area.
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Affiliation(s)
- Miri Lee
- College of Pharmacy, Ewha Womans University, Seoul 37060, Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jungah Kim
- College of Pharmacy, Ewha Womans University, Seoul 37060, Republic of Korea
| | - Song E Lim
- College of Pharmacy, Ewha Womans University, Seoul 37060, Republic of Korea
| | - Sang Hyeon Yeon
- BK21 Plus Team, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Buhyun Lee
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Joo Young Lee
- BK21 Plus Team, College of Pharmacy, The Catholic University of Korea, Bucheon 14662, Republic of Korea.
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul 37060, Republic of Korea.
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Lee M, Hwang JH, Lim KM. Alternatives to In Vivo Draize Rabbit Eye and Skin Irritation Tests with a Focus on 3D Reconstructed Human Cornea-Like Epithelium and Epidermis Models. Toxicol Res 2017; 33:191-203. [PMID: 28744350 PMCID: PMC5523559 DOI: 10.5487/tr.2017.33.3.191] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 06/13/2017] [Accepted: 06/14/2017] [Indexed: 12/25/2022] Open
Abstract
Human eyes and skin are frequently exposed to chemicals accidentally or on purpose due to their external location. Therefore, chemicals are required to undergo the evaluation of the ocular and dermal irritancy for their safe handling and use before release into the market. Draize rabbit eye and skin irritation test developed in 1944, has been a gold standard test which was enlisted as OECD TG 404 and OECD TG 405 but it has been criticized with respect to animal welfare due to invasive and cruel procedure. To replace it, diverse alternatives have been developed: (i) For Draize eye irritation test, organotypic assay, in vitro cytotoxicity-based method, in chemico tests, in silico prediction model, and 3D reconstructed human cornea-like epithelium (RhCE); (ii) For Draize skin irritation test, in vitro cytotoxicity-based cell model, and 3D reconstructed human epidermis models (RhE). Of these, RhCE and RhE models are getting spotlight as a promising alternative with a wide applicability domain covering cosmetics and personal care products. In this review, we overviewed the current alternatives to Draize test with a focus on 3D human epithelium models to provide an insight into advancing and widening their utility.
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Affiliation(s)
| | | | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul,
Korea
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14
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Fiume MM, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Andersen FA. Safety Assessment of Boron Nitride as Used in Cosmetics. Int J Toxicol 2016; 34:53S-60S. [PMID: 26684796 DOI: 10.1177/1091581815617793] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The Cosmetic Ingredient Review Expert Panel (Panel) assessed the safety of boron nitride which functions in cosmetics as a slip modifier (ie, it has a lubricating effect). Boron nitride is an inorganic compound with a crystalline form that can be hexagonal, spherical, or cubic; the hexagonal form is presumed to be used in cosmetics. The highest reported concentration of use of boron nitride is 25% in eye shadow formulations. Although boron nitride nanotubes are produced, boron nitride is not listed as a nanomaterial used in cosmetic formulations. The Panel reviewed available chemistry, animal data, and clinical data and concluded that this ingredient is safe in the present practices of use and concentration in cosmetic formulations.
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Affiliation(s)
- Monice M Fiume
- Cosmetic Ingredient Review Senior Scientific Analyst/Writer, Washington, DC, USA
| | - Wilma F Bergfeld
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Donald V Belsito
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Ronald A Hill
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | | | - Daniel C Liebler
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - James G Marks
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Ronald C Shank
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Thomas J Slaga
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - Paul W Snyder
- Cosmetic Ingredient Review Expert Panel Member, Washington, DC, USA
| | - F Alan Andersen
- Former Director, Cosmetic Ingredient Review, Washington, DC, USA
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15
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Application of SV40 T-transformed human corneal epithelial cells to evaluate potential irritant chemicals for in vitro alternative eye toxicity. J Pharmacol Toxicol Methods 2016; 80:82-9. [DOI: 10.1016/j.vascn.2016.05.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 05/12/2016] [Accepted: 05/23/2016] [Indexed: 11/21/2022]
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16
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Yamamoto N, Kato Y, Sato A, Hiramatsu N, Yamashita H, Ohkuma M, Miyachi EI, Horiguchi M, Hirano K, Kojima H. Establishment of a new immortalized human corneal epithelial cell line (iHCE-NY1) for use in evaluating eye irritancy by in vitro test methods. In Vitro Cell Dev Biol Anim 2016; 52:742-8. [PMID: 27130679 DOI: 10.1007/s11626-016-0038-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/04/2016] [Indexed: 11/26/2022]
Abstract
In vitro test methods that use human corneal epithelial cells to evaluate the eye irritation potency of chemical substances do not use human corneal epithelium because it has been difficult to maintain more than four passages. In this study, we make a new cell line comprising immortalized human corneal epithelial cells (iHCE-NY1). The IC50 of iHCE-NY1 cells is slightly higher than that of Statens Seruminstitut Rabbit Cornea (SIRC) cells, which are currently used in some in vitro test methods. CDKN1A in iHCE-NY1 cells was used as a marker of gene expression to indicate cell cycle activity. This enabled us to evaluate cell recovery characteristics at concentrations lower than the IC50 of cytotoxic tests.
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Affiliation(s)
- Naoki Yamamoto
- Laboratory of Molecular Biology, Fujita Health University Institute of Joint Research, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Yoshinao Kato
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd, 2-7 Torimi-cho, Nishi-ku, Nagoya, Aichi, 451-0071, Japan
| | - Atsushi Sato
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd, 2-7 Torimi-cho, Nishi-ku, Nagoya, Aichi, 451-0071, Japan
| | - Noriko Hiramatsu
- Laboratory of Molecular Biology, Fujita Health University Institute of Joint Research, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Hiromi Yamashita
- Laboratory of Molecular Biology, Fujita Health University Institute of Joint Research, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Mahito Ohkuma
- Department of Physiology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Ei-Ichi Miyachi
- Department of Physiology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Masayuki Horiguchi
- Department of Ophthalmology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Koji Hirano
- Department of Ophthalmology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Hajime Kojima
- Japanese Center for the Validation of Alternative Methods (JaCVAM), Division of Pharmacology, Biological Safety Research Center, National Institute of Health Sciences, 1-18-1, Kamiyouga, Setagaya-ku, Tokyo, 158-8501, Japan
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17
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Quantin P, Thélu A, Catoire S, Ficheux H. Perspectives and strategies of alternative methods used in the risk assessment of personal care products. ANNALES PHARMACEUTIQUES FRANÇAISES 2015; 73:422-35. [DOI: 10.1016/j.pharma.2015.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 06/02/2015] [Accepted: 06/11/2015] [Indexed: 10/23/2022]
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18
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Yamaguchi H, Kojima H, Takezawa T. Predictive performance of the Vitrigel-eye irritancy test method using 118 chemicals. J Appl Toxicol 2015; 36:1025-37. [PMID: 26472347 PMCID: PMC5057344 DOI: 10.1002/jat.3254] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 09/14/2015] [Accepted: 09/21/2015] [Indexed: 11/26/2022]
Abstract
We recently developed a novel Vitrigel‐eye irritancy test (EIT) method. The Vitrigel‐EIT method is composed of two parts, i.e., the construction of a human corneal epithelium (HCE) model in a collagen vitrigel membrane chamber and the prediction of eye irritancy by analyzing the time‐dependent profile of transepithelial electrical resistance values for 3 min after exposing a chemical to the HCE model. In this study, we estimated the predictive performance of Vitrigel‐EIT method by testing a total of 118 chemicals. The category determined by the Vitrigel‐EIT method in comparison to the globally harmonized system classification revealed that the sensitivity, specificity and accuracy were 90.1%, 65.9% and 80.5%, respectively. Here, five of seven false‐negative chemicals were acidic chemicals inducing the irregular rising of transepithelial electrical resistance values. In case of eliminating the test chemical solutions showing pH 5 or lower, the sensitivity, specificity and accuracy were improved to 96.8%, 67.4% and 84.4%, respectively. Meanwhile, nine of 16 false‐positive chemicals were classified irritant by the US Environmental Protection Agency. In addition, the disappearance of ZO‐1, a tight junction‐associated protein and MUC1, a cell membrane‐spanning mucin was immunohistologically confirmed in the HCE models after exposing not only eye irritant chemicals but also false‐positive chemicals, suggesting that such false‐positive chemicals have an eye irritant potential. These data demonstrated that the Vitrigel‐EIT method could provide excellent predictive performance to judge the widespread eye irritancy, including very mild irritant chemicals. We hope that the Vitrigel‐EIT method contributes to the development of safe commodity chemicals. Copyright © 2015 The Authors. Journal of Applied Toxicology published by John Wiley & Sons Ltd. The sensitivity, specificity and accuracy of Vitrigel‐EIT method in comparison to GHS were 90.1%, 65.9% and 80.5%, respectively. In case of eliminating nine chemicals showing pH 5 or lower, those were improved to 96.8%, 67.4% and 84.4%, respectively. Meanwhile, nine of 16 false‐positive chemicals were classified irritant by EPA and immunohistologically confirmed to have an eye irritant potential. These data demonstrated that the Vitrigel‐EIT method could provide excellent predictive performance to judge the widespread eye irritancy, including mild irritant chemicals.
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Affiliation(s)
- Hiroyuki Yamaguchi
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan.,Isehara Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Isehara, Kanagawa, Japan
| | - Hajime Kojima
- Japanese Center for the Validation of Alternative Methods (JaCVAM), Biological Safety Research Center, National Institute of Hearth Sciences, Setagaya, Tokyo, Japan
| | - Toshiaki Takezawa
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
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19
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Oliveira GAR, Ducas RDN, Teixeira GC, Batista AC, Oliveira DP, Valadares MC. Short Time Exposure (STE) test in conjunction with Bovine Corneal Opacity and Permeability (BCOP) assay including histopathology to evaluate correspondence with the Globally Harmonized System (GHS) eye irritation classification of textile dyes. Toxicol In Vitro 2015; 29:1283-8. [DOI: 10.1016/j.tiv.2015.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 05/05/2015] [Accepted: 05/10/2015] [Indexed: 11/28/2022]
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20
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Bartok M, Gabel D, Zorn-Kruppa M, Engelke M. Development of an in vitro ocular test system for the prediction of all three GHS categories. Toxicol In Vitro 2015; 29:72-80. [DOI: 10.1016/j.tiv.2014.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/03/2014] [Accepted: 09/05/2014] [Indexed: 11/28/2022]
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21
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Wilson SL, Ahearne M, Hopkinson A. An overview of current techniques for ocular toxicity testing. Toxicology 2015; 327:32-46. [DOI: 10.1016/j.tox.2014.11.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 12/25/2022]
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22
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Zorn-Kruppa M, Houdek P, Wladykowski E, Engelke M, Bartok M, Mewes KR, Moll I, Brandner JM. Determining the Depth of Injury in Bioengineered Tissue Models of Cornea and Conjunctiva for the Prediction of All Three Ocular GHS Categories. PLoS One 2014; 9:e114181. [PMID: 25494045 PMCID: PMC4262406 DOI: 10.1371/journal.pone.0114181] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 11/05/2014] [Indexed: 11/19/2022] Open
Abstract
The depth of injury (DOI) is a mechanistic correlate to the ocular irritation response. Attempts to quantitatively determine the DOI in alternative tests have been limited to exvivo animal eyes by fluorescent staining for biomarkers of cell death and viability in histological cross sections. It was the purpose of this study to assess whether DOI could also be measured by means of cell viability detected by the MTT assay using 3-dimensional (3D) reconstructed models of cornea and conjunctiva. The formazan-free area of metabolically inactive cells in the tissue after topical substance application is used as the visible correlate of the DOI. Areas of metabolically active or inactive cells are quantitatively analyzed on cryosection images with ImageJ software analysis tools. By incorporating the total tissue thickness, the relative MTT-DOI (rMTT-DOI) was calculated. Using the rMTT-DOI and human reconstructed cornea equivalents, we developed a prediction model based on suitable viability cut-off values. We tested 25 chemicals that cover the whole range of eye irritation potential based on the globally harmonized system of classification and labelling of chemicals (GHS). Principally, the MTT-DOI test method allows distinguishing between the cytotoxic effects of the different chemicals in accordance with all 3 GHS categories for eye irritation. Although the prediction model is slightly over-predictive with respect to non-irritants, it promises to be highly valuable to discriminate between severe irritants (Cat. 1), and mild to moderate irritants (Cat. 2). We also tested 3D conjunctiva models with the aim to specifically address conjunctiva-damaging substances. Using the MTT-DOI method in this model delivers comparable results as the cornea model, but does not add additional information. However, the MTT-DOI method using reconstructed cornea models already provided good predictability that was superior to the already existing established invitro/exvivo methods.
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Affiliation(s)
- Michaela Zorn-Kruppa
- University Medical Center Hamburg-Eppendorf, Department of Dermatology and Venerology, 20246 Hamburg, Germany
- * E-mail:
| | - Pia Houdek
- University Medical Center Hamburg-Eppendorf, Department of Dermatology and Venerology, 20246 Hamburg, Germany
| | - Ewa Wladykowski
- University Medical Center Hamburg-Eppendorf, Department of Dermatology and Venerology, 20246 Hamburg, Germany
| | - Maria Engelke
- Jacobs University Bremen gGmbH, School of Engineering and Sciences, 28759 Bremen, Germany
| | - Melinda Bartok
- Jacobs University Bremen gGmbH, School of Engineering and Sciences, 28759 Bremen, Germany
| | | | - Ingrid Moll
- University Medical Center Hamburg-Eppendorf, Department of Dermatology and Venerology, 20246 Hamburg, Germany
| | - Johanna M. Brandner
- University Medical Center Hamburg-Eppendorf, Department of Dermatology and Venerology, 20246 Hamburg, Germany
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23
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Yamaguchi H, Kojima H, Takezawa T. Vitrigel-Eye Irritancy Test Method Using HCE-T Cells. Toxicol Sci 2013; 135:347-55. [DOI: 10.1093/toxsci/kft159] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Hayashi K, Abo T, Nukada Y, Sakaguchi H. Definition of the applicability domain of the Short Time Exposure (STE) test for predicting the eye irritation of chemicals. Altern Lab Anim 2013; 41:157-71. [PMID: 23781933 DOI: 10.1177/026119291304100205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The Short Time Exposure (STE) test is a simple and easy-to-perform in vitro eye irritation test, that uses the viability of SIRC cells (a rabbit corneal cell line) treated for five minutes as the endpoint. In this study, our goal was to define the applicability domain of the STE test, based on the results obtained with a set of 113 substances. To achieve this goal, chemicals were selected to represent both different chemical classes and different chemical properties, as well as to cover, in a balanced manner, the categories of eye irritation potential according to the Globally Harmonised System (GHS). Accuracy analysis indicated that the rates of false negatives for organic/inorganic salts (75.0%), hydrocarbons (33.3%) and alcohols (23.5%) were high. Many of the false negative results were for solid substances. It is noteworthy that no surfactant resulted in a false negative result in the STE test. Further examination of the physical property data and performance showed a significant improvement in the predictive accuracy, when substances with vapour pressures over 6kPa were excluded from the analyses. Our results indicate that several substances - i.e. certain solids such as salts, alcohols, hydrocarbons, and volatile substances with a vapour pressure over 6kPa - do not fall within the applicability domain of the STE test. Overall, we are encouraged by the performance and improved accuracy of the STE test.
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Affiliation(s)
- Kazuhiko Hayashi
- Safety Science Research Laboratories, Kao Corporation, Ichikai-Machi, Haga-Gun, Tochigi, Japan
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25
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Dholakiya SL, Barile FA. Alternative methods for ocular toxicology testing: validation, applications and troubleshooting. Expert Opin Drug Metab Toxicol 2013; 9:699-712. [DOI: 10.1517/17425255.2013.783013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Chang YK, Su TS, Ouyang Y, Tseng JM. Employee impact and attitude analysis for GHS implementation in Taiwan. INDUSTRIAL HEALTH 2013; 51:353-363. [PMID: 23385438 DOI: 10.2486/indhealth.ms1362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The employee impact and attitude analysis for GHS implementation in Taiwan was investigated in this study. An impact assessment on the new regulations or changes in regulations for government, potential costs, benefits, and the global trade in chemicals to industries and hazard communication program for workers was studied by the methods of the questionnaire design and Delphi expert method. A survey was conducted using questionnaires and taking 200 experts from government's expert database and 500 selected respondents from case company. Results from present study revealed that the barrier associated with GHS implementation is existed; it is feasible to overcome. Both experts and employees think that business entities are insufficient to test and classify chemicals on their own, and the technical guidance from the government is needed. Data analyzed by the logistic regression revealed that more hours an employee spends on education and trainings of new GHS systems; the employee thinks implementation of GHS will improve hazard awareness for transporters. The weak labeling ability affects deployment of the new GHS system.
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Affiliation(s)
- Yi-Kuo Chang
- Department of Safety Health and Environmental Engineering, Central Taiwan University of Science and Technology, Taiwan
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27
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Engelke M, Zorn-Kruppa M, Gabel D, Reisinger K, Rusche B, Mewes K. A human hemi-cornea model for eye irritation testing: Quality control of production, reliability and predictive capacity. Toxicol In Vitro 2013; 27:458-68. [DOI: 10.1016/j.tiv.2012.07.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 07/08/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022]
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28
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Hayashi K, Mori T, Abo T, Koike M, Takahashi Y, Sakaguchi H, Nishiyama N. A tiered approach combining the short time exposure (STE) test and the bovine corneal opacity and permeability (BCOP) assay for predicting eye irritation potential of chemicals. J Toxicol Sci 2012; 37:269-80. [DOI: 10.2131/jts.37.269] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
| | - Taeko Mori
- Safety Science Research Laboratories, Kao Corporation
| | - Takayuki Abo
- Safety Science Research Laboratories, Kao Corporation
| | - Mirei Koike
- Safety Science Research Laboratories, Kao Corporation
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