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Shen J, Huang X, Guo X, Zhou T, Li G. Safety and Efficacy of Dry Eye Intelligent Therapeutic Device in the Treatment of Meibomian Gland Dysfunction in Rabbits. Curr Eye Res 2024; 49:1030-1041. [PMID: 38813818 DOI: 10.1080/02713683.2024.2357655] [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: 12/29/2023] [Revised: 04/12/2024] [Accepted: 05/14/2024] [Indexed: 05/31/2024]
Abstract
PURPOSE To assess the safety and efficacy of the dry eye intelligent therapeutic device in rabbits with meibomian gland dysfunction. METHODS The meibomian gland dysfunction-afflicted rabbits were subjected to treatment using the dry eye intelligent therapeutic device. Various parameters, including eyelid margin, meibomian gland opening, redness, meibomian gland area, keratoconjunctival fluorescence staining, and intraocular pressure, were examined and analyzed using an ocular surface comprehensive examination instrument, slit lamp, and tonometer at corresponding times points. Hematoxylin and eosin staining was performed to examine the mucosal epithelium and meibomian gland. RESULTS In this study, eyelid margin congestion and meibomian gland opening obstruction were significantly improved after 3 weeks and 4 weeks of treatment, respectively (p < .01, p < .05). The treatment group showed a significant increase in tear meniscus height after 2 weeks, 3 weeks and 4 weeks of treatment (p < .001, p < .01, p < .05). No significant changes were noted in meibomian gland area, redness, intraocular pressure, and keratoconjunctival fluorescence staining of rabbits before and after treatment. Hematoxylin and eosin staining revealed a complete structure of mucosal epithelium and meibomian gland in the treatment group and that the expansion of the blocked meibomian gland duct was reduced. CONCLUSION The utilization of the dry eye intelligent therapeutic device in treating meibomian gland dysfunction-afflicted rabbits exhibits potential promising safety, efficacy, and overall benefits, thereby offering a novel alternative for managing meibomian gland dysfunction patients in clinical settings.
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Affiliation(s)
- Jiachao Shen
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyu Huang
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaojie Guo
- Department of Comprehensive Medical, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tianyu Zhou
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guigang Li
- Department of Ophthalmology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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2
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Britten-Jones AC, Wang MTM, Samuels I, Jennings C, Stapleton F, Craig JP. Epidemiology and Risk Factors of Dry Eye Disease: Considerations for Clinical Management. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1458. [PMID: 39336499 PMCID: PMC11433936 DOI: 10.3390/medicina60091458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 08/17/2024] [Accepted: 08/28/2024] [Indexed: 09/30/2024]
Abstract
Dry eye disease is a multifactorial condition characterised by tear film instability, hyperosmolarity and ocular surface inflammation. Understanding the epidemiology of dry eye disease and recognising both modifiable and non-modifiable risk factors can assist eye care practitioners in assessing, treating, and managing patients with the condition. This review considers current knowledge surrounding its incidence and prevalence, as well as associated demographic, systemic, ocular, and iatrogenic, and lifestyle-related modifiable risk factors. Population-based prevalence estimates vary according to the diagnostic criteria used to define dry eye disease, as well as severity and demographic characteristics of the population. Considering recent data and variable population demographics, conservative prevalence estimates suggest that 10-20% of the population over 40 years of age report moderate to severe symptoms and/or seek treatment for dry eye disease. Individuals with specific non-modifiable demographic risk factors may be at increased risk of developing dry eye disease. Advanced age, female sex and East Asian ethnicity have been identified as key non-modifiable demographic features predisposing individuals to dry eye disease. Systemic conditions that have been associated with an increased risk of dry eye disease include migraine, Sjögren syndrome, connective tissue disorders, mental health disorders, diabetes mellitus and androgen deficiency. Medications that may contribute to this risk include antidepressants, antihistamines, and hormone replacement therapy. Ocular and iatrogenic risk factors of dry eye disease include blepharitis, Demodex infestation, ocular surgery, blink completeness, contact lens wear, and topical ophthalmic medications. A range of modifiable lifestyle factors that can increase the risk of dry eye disease have also been identified, including low humidity environments, digital screen use, quality of sleep, diet, and eye cosmetic wear. Dry eye is a common disease affecting millions globally. Increasing knowledge regarding its associated risk factors can better prepare the eye care practitioner to successfully manage patients with this ocular surface disease.
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Affiliation(s)
- Alexis Ceecee Britten-Jones
- Department of Optometry and Vision Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - Michael T. M. Wang
- Department of Ophthalmology, Aotearoa New Zealand National Eye Centre, The University of Auckland, Auckland 1023, New Zealand; (M.T.M.W.); (I.S.); (C.J.)
| | - Isaac Samuels
- Department of Ophthalmology, Aotearoa New Zealand National Eye Centre, The University of Auckland, Auckland 1023, New Zealand; (M.T.M.W.); (I.S.); (C.J.)
| | - Catherine Jennings
- Department of Ophthalmology, Aotearoa New Zealand National Eye Centre, The University of Auckland, Auckland 1023, New Zealand; (M.T.M.W.); (I.S.); (C.J.)
| | - Fiona Stapleton
- School of Optometry and Vision Science, Faculty of Medicine and Health, UNSW Sydney, Sydney, NSW 2052, Australia;
| | - Jennifer P. Craig
- Department of Ophthalmology, Aotearoa New Zealand National Eye Centre, The University of Auckland, Auckland 1023, New Zealand; (M.T.M.W.); (I.S.); (C.J.)
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3
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Wyżga B, Kamiński K, Hąc-Wydro K. The influence of Leucidal, a natural cosmetic preservative, on fibroblast and keratinocytes. Studies on cells and on model membrane systems. Arch Biochem Biophys 2024; 757:110044. [PMID: 38797227 DOI: 10.1016/j.abb.2024.110044] [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: 02/18/2024] [Revised: 04/28/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
The aim of this work was to investigate the influence of Leucidal® Liquid (abbr. Leucidal), which is recommended as a natural cosmetic ingredient of antimicrobial properties, on model membranes of keratinocytes and fibroblasts. The toxicity tests on cell lines were also performed to allow for a more detailed discussion of the results. As model membrane systems the lipid Langmuir monolayers were applied. During the investigations, the surface pressure/area measurements, penetration studies and Brewster Angle Microscopy (BAM) visualization were performed for one component and mixed lipid monolayers. It was evidenced that at the membrane - corresponding conditions, the components of Leucidal do not penetrate either model keratinocyte and fibroblast membranes or one component films composed of the major lipids of skin cell membranes. Leucidal makes these systems slightly more expanded and less stable, however this is not reflected in the changes in the film morphology. Only the ceramide systems were sensitive to the presence of Leucidal, i.e. the incorporation of Leucidal components manifested well in the decrease of the films' condensation and alterations in their morphology. The tests on cells demonstrated that Leucidal is non toxic for these types of cells at the concentrations suggested by the producer. A thorough comparison of these results with those published for bacteria model membranes enabled us to discuss them in the context of the mechanism of action of Leucidal components. It was concluded that Leucidal components are of low affinity to the skin cellular model membranes of low content of Leucidal-sensitive ceramides and are not toxic for fibroblast and keratinocyte cell lines. Moreover, the lipid composition of the membrane and its molecular organization can be important targets for Leucidal components, decisive from the point of view of the activity and selectivity of the studied composition.
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Affiliation(s)
- Beata Wyżga
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387, Kraków, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Kamil Kamiński
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387, Kraków, Poland
| | - Katarzyna Hąc-Wydro
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387, Kraków, Poland.
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4
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Jones L, Efron N, Bandamwar K, Barnett M, Jacobs DS, Jalbert I, Pult H, Rhee MK, Sheardown H, Shovlin JP, Stahl U, Stanila A, Tan J, Tavazzi S, Ucakhan OO, Willcox MDP, Downie LE. TFOS Lifestyle: Impact of contact lenses on the ocular surface. Ocul Surf 2023; 29:175-219. [PMID: 37149139 DOI: 10.1016/j.jtos.2023.04.010] [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: 04/07/2023] [Accepted: 04/10/2023] [Indexed: 05/08/2023]
Abstract
Several lifestyle choices made by contact lens wearers can have adverse consequences on ocular health. These include being non-adherent to contact lens care, sleeping in lenses, ill-advised purchasing options, not seeing an eyecare professional for regular aftercare visits, wearing lenses when feeling unwell, wearing lenses too soon after various forms of ophthalmic surgery, and wearing lenses when engaged in risky behaviors (e.g., when using tobacco, alcohol or recreational drugs). Those with a pre-existing compromised ocular surface may find that contact lens wear exacerbates ocular disease morbidity. Conversely, contact lenses may have various therapeutic benefits. The coronavirus disease-2019 (COVID-19) pandemic impinged upon the lifestyle of contact lens wearers, introducing challenges such as mask-associated dry eye, contact lens discomfort with increased use of digital devices, inadvertent exposure to hand sanitizers, and reduced use of lenses. Wearing contact lenses in challenging environments, such as in the presence of dust and noxious chemicals, or where there is the possibility of ocular trauma (e.g., sport or working with tools) can be problematic, although in some instances lenses can be protective. Contact lenses can be worn for sport, theatre, at high altitude, driving at night, in the military and in space, and special considerations are required when prescribing in such situations to ensure successful outcomes. A systematic review and meta-analysis, incorporated within the review, identified that the influence of lifestyle factors on soft contact lens dropout remains poorly understood, and is an area in need of further research. Overall, this report investigated lifestyle-related choices made by clinicians and contact lens wearers and discovered that when appropriate lifestyle choices are made, contact lens wear can enhance the quality of life of wearers.
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Affiliation(s)
- Lyndon Jones
- Centre for Ocular Research & Education (CORE), School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada.
| | - Nathan Efron
- School of Optometry and Vision Science, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Kalika Bandamwar
- Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand
| | - Melissa Barnett
- University of California, Davis Eye Center, Sacramento, CA, USA
| | - Deborah S Jacobs
- Massachusetts Eye & Ear, Harvard Medical School, Boston, MA, USA
| | - Isabelle Jalbert
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
| | - Heiko Pult
- Dr Heiko Pult Optometry & Vision Research, Weinheim, Germany
| | | | - Heather Sheardown
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada
| | | | - Ulli Stahl
- Centre for Ocular Research & Education (CORE), School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
| | | | - Jacqueline Tan
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
| | - Silvia Tavazzi
- Department of Materials Science, University of Milano-Bicocca, Milan, Italy
| | | | - Mark D P Willcox
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
| | - Laura E Downie
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, Victoria, Australia
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5
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Sullivan DA, da Costa AX, Del Duca E, Doll T, Grupcheva CN, Lazreg S, Liu SH, McGee SR, Murthy R, Narang P, Ng A, Nistico S, O'Dell L, Roos J, Shen J, Markoulli M. TFOS Lifestyle: Impact of cosmetics on the ocular surface. Ocul Surf 2023; 29:77-130. [PMID: 37061220 PMCID: PMC11246752 DOI: 10.1016/j.jtos.2023.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/06/2023] [Indexed: 04/17/2023]
Abstract
In this report the use of eye cosmetic products and procedures and how this represents a lifestyle challenge that may exacerbate or promote the development of ocular surface and adnexal disease is discussed. Multiple aspects of eye cosmetics are addressed, including their history and market value, psychological and social impacts, possible problems associated with cosmetic ingredients, products, and procedures, and regulations for eye cosmetic use. In addition, a systematic review that critically appraises randomized controlled trial evidence concerning the ocular effects of eyelash growth products is included. The findings of this systematic review highlight the evidence gaps and indicate future directions for research to focus on ocular surface outcomes associated with eyelash growth products.
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Affiliation(s)
| | | | - Ester Del Duca
- Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | | | | | - Sihem Lazreg
- Lazreg Cornea and Ocular Surface Center, Blida, Algeria
| | - Su-Hsun Liu
- University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | | | | | | | - Alison Ng
- Centre for Ocular Research & Education, School of Optometry and Vision Science, University of Waterloo, Waterloo, Canada
| | - Steven Nistico
- Department of Dermatology, University Magna Graecia, Catanzaro, Italy
| | | | | | - Joanne Shen
- Department of Ophthalmology, Mayo Clinic in Arizona, Scottsdale, AZ, USA
| | - Maria Markoulli
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
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6
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Kolko M, Gazzard G, Baudouin C, Beier S, Brignole-Baudouin F, Cvenkel B, Fineide F, Hedengran A, Hommer A, Jespersen E, Messmer EM, Murthy R, Sullivan AG, Tatham AJ, Utheim TP, Vittrup M, Sullivan DA. Impact of glaucoma medications on the ocular surface and how ocular surface disease can influence glaucoma treatment. Ocul Surf 2023; 29:456-468. [PMID: 37302545 DOI: 10.1016/j.jtos.2023.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/24/2023] [Accepted: 05/29/2023] [Indexed: 06/13/2023]
Affiliation(s)
- Miriam Kolko
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark; Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Gus Gazzard
- Glaucoma Service, Moorfields Eye Hospital NHS Foundation Trust, London, UK; UCL Institute of Ophthalmology, London, UK; NIHR-Moorfields Biomedical Research Centre, London, UK
| | - Christophe Baudouin
- Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris, France; Université Paris-Saclay, Versailles-Saint-Quentin-en-Yvelines, Paris, France; Institut de la Vision, Sorbonne Université, Paris, France
| | - Sofie Beier
- Royal Danish Academy - Architecture, Design, Conservation, Copenhagen, Denmark
| | - Françoise Brignole-Baudouin
- Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, Paris, France; Institut de la Vision, Sorbonne Université, Paris, France; Faculté de Pharmacie, Paris Cité université, Paris, France
| | - Barbara Cvenkel
- Department of Ophthalmology, University Medical Centre Ljubljana, Ljubljana, Slovenia; Medical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Fredrik Fineide
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Anne Hedengran
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark; Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Anton Hommer
- Department of Ophthalmology, HERA Hospital, Vienna, Austria
| | | | | | | | | | - Andrew J Tatham
- Princess Alexandra Eye Pavilion and Department of Ophthalmology, University of Edinburgh, Edinburgh, UK
| | - Tor Paaske Utheim
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
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7
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Nowak-Lange M, Niedziałkowska K, Lisowska K. Cosmetic Preservatives: Hazardous Micropollutants in Need of Greater Attention? Int J Mol Sci 2022; 23:14495. [PMID: 36430973 PMCID: PMC9692320 DOI: 10.3390/ijms232214495] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/06/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022] Open
Abstract
In recent years, personal care products (PCPs) have surfaced as a novel class of pollutants due to their release into wastewater treatment plants (WWTPs) and receiving environments by sewage effluent and biosolid-augmentation soil, which poses potential risks to non-target organisms. Among PCPs, there are preservatives that are added to cosmetics for protection against microbial spoilage. This paper presents a review of the occurrence in different environmental matrices, toxicological effects, and mechanisms of microbial degradation of four selected preservatives (triclocarban, chloroxylenol, methylisothiazolinone, and benzalkonium chloride). Due to the insufficient removal from WWTPs, cosmetic preservatives have been widely detected in aquatic environments and sewage sludge at concentrations mainly below tens of µg L-1. These compounds are toxic to aquatic organisms, such as fish, algae, daphnids, and rotifers, as well as terrestrial organisms. A summary of the mechanisms of preservative biodegradation by micro-organisms and analysis of emerging intermediates is also provided. Formed metabolites are often characterized by lower toxicity compared to the parent compounds. Further studies are needed for an evaluation of environmental concentrations of preservatives in diverse matrices and toxicity to more species of aquatic and terrestrial organisms, and for an understanding of the mechanisms of microbial degradation. The research should focus on chloroxylenol and methylisothiazolinone because these compounds are the least understood.
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Affiliation(s)
- Marta Nowak-Lange
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-237 Łódź, Poland
| | | | - Katarzyna Lisowska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-237 Łódź, Poland
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8
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Current progress in preservative-free topical ophthalmic formulations. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Effects of PPAR-γ and RXR-α on mouse meibomian gland epithelial cells during inflammation induced by latanoprost. Exp Eye Res 2022; 224:109251. [PMID: 36150542 DOI: 10.1016/j.exer.2022.109251] [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: 11/03/2021] [Revised: 08/30/2022] [Accepted: 09/13/2022] [Indexed: 11/21/2022]
Abstract
The purpose of this study is to investigate the effects of latanoprost on the secretion of cytokines and chemokines from meibomian gland epithelial cells, and to evaluate the modulation of peroxisome proliferator-activated receptor γ (PPAR-γ) and retinoid X receptor α (RXR-α) during latanoprost-induced inflammation. Mouse meibomian gland epithelial cells were cultured in proliferation and differentiation medium, respectively. Cells were exposed to latanoprost, rosiglitazone (PPAR-γ agonist), or LG100268 (RXR-α agonist), respectively. The expression of IL-6, IL-1β, TNF-α, MMP-9, MCP-1, and CCL-5 were detected by real-time PCR and ELISA. The effect of latanoprost, rosiglitazone, LG100268, and inflammatory cytokines on the differentiation of meibocyte were evaluated by related gene expression and lipid staining. The expression of Keratin-1, 6, 17 protein was detected by western immunoblotting. The results showed that the above cytokines could be induced by latanoprost in meibomian gland epithelial cells. LG100268 and rosiglitazone could inhibit the production of IL-6 and TNF-α induced by latanoprost, respectively. Latanoprost suppressed the expression of differentiation-related mRNA through a positive feedback loop by enhancement of COX-2 expression via FP receptor-activated ERK signaling. The expression of Keratin-17 was upregulated by rosiglitazone and suppressed by LG100268. The application of IL-6 and TNF-α showed negative effects on lipid accumulation in meibomian gland epithelial cells. These results demonstrated that latanoprost could induce inflammation and suppress differentiation of mouse meibomian gland epithelial cells. The activation of PPAR-γ and RXR-α showed an anti-inflammatory effect, showing a potential role to antagonize the effect of latanoprost eyedrops on meibomian gland epithelial cells.
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10
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Yoon HS, Jin R, Yoon HJ, Yoon KC. Benzalkonium Chloride for Experimental Dry Eye Induction in a Rabbit Model. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2022. [DOI: 10.3341/jkos.2022.63.8.660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose: This study compared the clinical parameters and histological findings according to the benzalkonium chloride concentration (BAC; 0.05%, 0.1%, and 0.2%) for inducing experimental dry eye (EDE) in a rabbit model.Methods: Rabbits were divided into four groups according to the BAC concentration: untreated group, 0.05%, 0.1%, and 0.2% BAC. BAC was instilled topically in both eyes of the rabbits twice daily until they were euthanized after 14 days. Tear volume, tear break-up time (TBUT), and corneal fluorescein staining score (CFS) were measured 0, 3, 5, 7, and 14 days after treatment. After excising tissues on day 14, the conjunctival goblet cell density and corneal epithelial apoptosis were quantified.Results: The tear volume and TBUT were lower and the CFS was higher than baseline values after 14, 10, and 5 days in the 0.05, 0.1, and 0.2% BAC groups, respectively (all p < 0.05). At 14 days, the 0.2% BAC group showed more significant aggravation of all clinical parameters, and the 0.1% BAC group had a lower CFS (all p < 0.05) than the 0.05% BAC group. In all BAC groups, the conjunctival goblet cell density was lower and corneal epithelial apoptosis was significantly higher than in the untreated group (all p < 0.01). The conjunctival goblet cell density was lower in the 0.2% BAC group than in the 0.05% BAC group. Between-group differences in corneal epithelial apoptosis were observed in all experimental groups (all p < 0.01).Conclusions: Instilling BAC for 14 days induced EDE in the 0.05, 0.1, and 0.2% BAC groups. Although 0.2% BAC cannot be used for a severe EDE model, it is useful for inducing EDE in a rabbit model in a short time.
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11
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Wu J, Wu T, Zheng S, Huang Y, Wang L. Low-dose repeated exposure to chemical surfactant impairs corneal epithelium: When personal cleaning products entering the eye. Exp Eye Res 2021; 210:108696. [PMID: 34228968 DOI: 10.1016/j.exer.2021.108696] [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: 01/24/2021] [Revised: 06/17/2021] [Accepted: 06/30/2021] [Indexed: 02/03/2023]
Abstract
Studies have reported that the incidence of ocular discomfort in people who often wear makeup is higher than that in the normal population. The incidence of ocular discomfort of these people may be also related to the daily ocular exposure to chemical surfactants during cleaning. The objectives of this study were to explore morphological and pathological changes in the murine ocular surface after low-dose repeated exposure to disodium cocoamphodiacetate (DC), a kind of chemical surfactant widely used in personal cleaning products, and to investigate the possible mechanisms. DC was administered in low dose (0.1%) to the ocular surface of C56BL/6 once daily for two weeks. We found that there were an increase of sodium fluorescein staining on the cornea, a significant thinning of corneal epithelial thickness, and increased TUNEL-positive cells in corneal epithelium in vivo. DC treatment also modulated the distribution of K14+ and P63+ epithelia from the limbal to the center on the cornea. In cultured murine corneal epithelial progenitor cell line (TKE2), DC treatment induced cell detachment and decreased the activation of Ak strain transforming protein (AKT), and extracellular signal-regulated kinase (ERK). And DC increased TUNEL-positive cells in vitro with increased expression of cleaved Caspase3 and B-cell lymphoma-2 associated X protein (Bax). Our results indicated that repeated low-dose DC exposure on ocular surface caused significant impairment on the structure and viability of the corneal epithelium by inhibiting epithelial proliferation and inducing apoptosis. It provides the foundations to understand the harmful effects of cleaning products daily exposure on the ocular surface.
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Affiliation(s)
- Jie Wu
- Medical School of Chinese PLA, Beijing, 100089, China; Department of Ophthalmology, The Third Medical Center, Chinese PLA General Hospital, Beijing, 100089, China
| | - Tengyun Wu
- Medical School of Chinese PLA, Beijing, 100089, China; Department of Ophthalmology, The Third Medical Center, Chinese PLA General Hospital, Beijing, 100089, China
| | - Shuo Zheng
- Medical School of Chinese PLA, Beijing, 100089, China; Department of Ophthalmology, The Third Medical Center, Chinese PLA General Hospital, Beijing, 100089, China
| | - Yifei Huang
- Department of Ophthalmology, The Third Medical Center, Chinese PLA General Hospital, Beijing, 100089, China
| | - Liqiang Wang
- Department of Ophthalmology, The Third Medical Center, Chinese PLA General Hospital, Beijing, 100089, China.
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12
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Nagendran ST, Ali MJ, Dogru M, Malhotra R. Complications and Adverse Effects of Periocular Aesthetic Treatments. Surv Ophthalmol 2021; 67:741-757. [PMID: 33933438 DOI: 10.1016/j.survophthal.2021.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 04/17/2021] [Accepted: 04/19/2021] [Indexed: 10/21/2022]
Abstract
The popularity and variety of temporary and permanent periocular aesthetic treatments has increased over the past decade. Patients frequently present to eye clinics with ocular complications and side effects following these treatments, their severity ranging from ocular irritation from dry eyes to visual loss from vascular occlusion. A careful, thorough history is essential, as many patients may not associate aesthetic procedures with ocular complications, and some may be embarrassed to disclose this information. All ophthalmologists should understand the potential ocular sequelae of these treatments and be able to initiate treatment in sight-threatening cases. Wesummarises the current literature on ophthalmic complications of the most common periocular aesthetic treatments.
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Affiliation(s)
- Sonali T Nagendran
- Corneoplastic Unit, Queen Victoria Hospital NHS Trust, East Grinstead, United Kingdom
| | - Mohammad Javed Ali
- Govindram Seksaria Institute of Dacryology, L.V. Prasad Eye Institute, Hyderabad, India
| | - Murat Dogru
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Raman Malhotra
- Corneoplastic Unit, Queen Victoria Hospital NHS Trust, East Grinstead, United Kingdom.
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13
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Singh S, Sharma S, Basu S. Rabbit models of dry eye disease: Current understanding and unmet needs for translational research. Exp Eye Res 2021; 206:108538. [PMID: 33771517 DOI: 10.1016/j.exer.2021.108538] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 03/02/2021] [Accepted: 03/05/2021] [Indexed: 11/17/2022]
Abstract
Dry eye disease (DED) is emerging as an eye health pandemic, affecting millions worldwide. The development of novel drugs, drug delivery systems, and targeted therapies for addressing the inflammation in DED necessitates progress in experimental models of DED. Animal models of DED have been created for simulating the two clinically described forms of DED: lacrimal insufficiency and the evaporative DED models. Although most DED models have relied upon rodents, the larger eye size and longer life span of rabbits and the closer resemblance to human lacrimal glands, render rabbits a promising near-ideal model for studying DED. Since the first rabbit DED model was described, numerous modifications including the use of topical epitheliotoxic drugs, neural abolition, activated lymphocytes injection, and surgical dacryoadenectomy have been introduced. The stability of these models, whether short-term or long-term, accordingly guides their experimental or therapeutic utility. A rabbit autoimmune dacryoadenitis model has successfully simulated DED signs and features of lacrimal gland inflammation, as observed in Sjogren's syndrome, that improved with mesenchymal stem cell therapy. This review summarizes the comparative microscopic anatomy of rabbit and human lacrimal glands, various existing rabbit DED models and their respective suitability for understanding pathogenetic mechanism of DED or for experimental drug testing. Also, the insights gained from animal models in dry eye management is described along with the future perspectives. There is still a pressing need of developing rabbit models for studying the pathogenesis of complex ocular surface changes in evaporative and aqueous deficiency DED other than autoimmune dacryoadenitis.
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Affiliation(s)
- Swati Singh
- Center for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India; Brien Holden Center for Eye Research (BHERC), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Savitri Sharma
- Jhaveri Microbiology Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Sayan Basu
- Center for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India; Brien Holden Center for Eye Research (BHERC), L V Prasad Eye Institute, Hyderabad, Telangana, India; The Cornea Institute, L V Prasad Eye Institute, Hyderabad, Telangana, India.
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Liu S, Han X, Liu H, Zhao Y, Li H, D Rupenthal I, Lv Z, Chen Y, Yang F, Ping Q, Pan Y, Hou D. Incorporation of ion exchange functionalized-montmorillonite into solid lipid nanoparticles with low irritation enhances drug bioavailability for glaucoma treatment. Drug Deliv 2021; 27:652-661. [PMID: 32347126 PMCID: PMC7241551 DOI: 10.1080/10717544.2020.1756984] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Montmorillonite-loaded solid lipid nanoparticles with good biocompatibility, using Betaxolol hydrochloride as model drug, were prepared by the melt-emulsion sonication and low temperature-solidification methods and drug bioavailability was significantly improved in this paper for the first time to application to the eye. The appropriate physical characteristics were showed, such as the mean particle size, Zeta potential, osmotic pressure, pH values, entrapping efficiency (EE%) and drug content (DC%), all showed well suited for possible ocular application. In vitro release experiment indicated that this novel system could continuously release 57.83% drugs within 12 h owing to the dual drug controlled-release effect that was achieved by ion-exchange feature of montmorillonite and structure of solid lipid nanoparticles. Low irritability and good compatibility of nanoparticles were proved by both CAM-TBS test and cytotoxicity experiment. We first discovered from the results of Rose Bengal experiment that the hydrophilicity of the drug-loaded nanoparticles surface was increased during the loading and releasing of the hydrophilic drug, which could contribute to prolong the ocular surface retention time of drug in the biological interface membrane of tear-film/cornea. The results of in vivo pharmacokinetic and pharmacodynamics studies further confirmed that increased hydrophilicity of nanoparticles surface help to improve the bioavailability of the drug and reduce intraocular pressure during administration. The results suggested this novel drug delivery system could be potentially used as an in situ drug controlled-release system for ophthalmic delivery to enhance the bioavailability and efficacy.
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Affiliation(s)
- Shuo Liu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Xinyue Han
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Hanyu Liu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Yawen Zhao
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Huamei Li
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Ilva D Rupenthal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Center, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Zhufen Lv
- Guangdong Engineering and Technology Research Center of Topical Precise Drug Delivery System, College of Pharmacy, Department of Pharmaceutics, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Yanzhong Chen
- Guangdong Engineering and Technology Research Center of Topical Precise Drug Delivery System, College of Pharmacy, Department of Pharmaceutics, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Fan Yang
- Guangdong Engineering and Technology Research Center of Topical Precise Drug Delivery System, College of Pharmacy, Department of Pharmaceutics, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Qineng Ping
- College of Pharmacy, China Pharmaceutical University, Nanjing, PR China
| | - Yufang Pan
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Dongzhi Hou
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
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15
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Won H, Lee JH, Seok JH, Jung K, Yang JY, Jeong J, Lee JK. Single- and repeated-dose 28-day oral toxicity study of MDM hydantoin in Sprague-Dawley rats. Toxicol Res 2021; 37:59-69. [PMID: 33489858 PMCID: PMC7806686 DOI: 10.1007/s43188-020-00055-0] [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: 02/25/2020] [Revised: 05/28/2020] [Accepted: 06/11/2020] [Indexed: 11/26/2022] Open
Abstract
1-(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione (MDM hydantoin) is a commonly used antiseptic preservative in cosmetics. However, limited toxicity information data are available for this chemical. The aim of this study was to obtain toxicity data for MDM hydantoin through single- and repeated-dose toxicity studies in Sprague-Dawley (SD) rats. In the single-dose toxicity study, MDM hydantoin was administered once orally to SD rats at four doses (5, 50, 300, and 2000 mg/kg/day). There was no significant difference in mortality, clinical signs, and body weight change for 14 days among the animals treated with the different doses in this study. Hence, the approximate lethal dose of MDM hydantoin was considered higher than 2000 mg/kg/day. Based on the results of the dose-range finding study, a 28-day repeated-dose oral toxicity study was conducted. MDM hydantoin was administered orally to SD rats at doses of 125, 250, 500, and 1000 mg/kg/day throughout an experimental period of 28 days. In the repeated-dose oral toxicity study, the adverse effects caused by MDM hydantoin were not detected in terms of body weight, clinical signs, food and water intake, hematology, organ weights, gross pathology, and histopathology. Therefore, the no-observed-adverse-effect level of MDM hydantoin was considered to be greater than 1000 mg/kg/day.
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Affiliation(s)
- Hansol Won
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
| | - Jin Hee Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
| | - Ji-Hyun Seok
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
| | - Kikyung Jung
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
| | - Jun-Young Yang
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
| | - Jayoung Jeong
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
| | - Jong Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, 187, Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159 Republic of Korea
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Abstract
PURPOSE Infestation with demodex mites has been linked to the development of chalazion, meibomian gland dysfunction, and blepharitis. An effective treatment is the eyelid application of terpinen-4-ol (T4O), a tea tree oil component. However, T4O is also known to be toxic to nonocular epithelial cells. We hypothesize that T4O toxicity also extends to human meibomian gland epithelial cells (HMGECs). METHODS Immortalized (I) HMGECs were cultured with varying concentrations (1.0%-0.001%) of T4O under proliferating or differentiating conditions up to 5 days. Experimental procedures included analyses of cell appearance, survival, P-Akt signaling, lysosome accumulation, and neutral lipid content. RESULTS Our findings show that T4O causes a dose- and time-dependent decrease in the cell survival of IHMGECs. After 15 minutes of exposure to 1% T4O, IHMGECs exhibited rounding, atrophy, and poor adherence. Within 90 minutes of such treatment, almost all cells died. Reducing the T4O concentration to 0.1% also led to a marked decrease in P-Akt signaling and cell survival of IHMGECs. Decreasing the T4O amount to 0.01% caused a slight, but significant, reduction in the IHMGEC number after 5 days of culture and did not influence the ability of these cells to differentiate. CONCLUSIONS T4O, even at levels 10-fold to 100-fold lower than demodicidal concentrations, is toxic to HMGECs in vitro.
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Affiliation(s)
- Di Chen
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Jingyi Wang
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - David A. Sullivan
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Wendy R. Kam
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Yang Liu
- Schepens Eye Research Institute, Massachusetts Eye and Ear, and Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
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17
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Wang J, Liu Y, Kam WR, Li Y, Sullivan DA. Toxicity of the cosmetic preservatives parabens, phenoxyethanol and chlorphenesin on human meibomian gland epithelial cells. Exp Eye Res 2020; 196:108057. [DOI: 10.1016/j.exer.2020.108057] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/11/2020] [Accepted: 04/28/2020] [Indexed: 11/16/2022]
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18
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Han X, Yang S, Kam WR, Sullivan DA, Liu Y. The Carbonic Anhydrase Inhibitor Dorzolamide Stimulates the Differentiation of Human Meibomian Gland Epithelial Cells. Curr Eye Res 2020; 45:1604-1610. [PMID: 32434386 DOI: 10.1080/02713683.2020.1772832] [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] [Indexed: 01/02/2023]
Abstract
PURPOSE Clinical studies have indicated that the long-term use of topical antiglaucoma drugs, such as carbonic anhydrase inhibitors (CAIs), may lead to meibomian gland dysfunction (MGD). We hypothesize that these adverse effects involve a direct influence on human MG epithelial cells (HMGECs). The purpose our present investigation was to test our hypothesis and determine whether exposure to dorzolamide, a CAI, impacts the proliferation, intracellular signaling and differentiation of HMGECs. MATERIALS AND METHODS We cultured immortalized (i) HMGECs with vehicle or various concentrations of dorzolamide for 6 days. Cells were enumerated with a hemocytometer, and examined for their morphology, Akt signaling activity, accumulation of neutral lipids, phospholipids and lysosomes, and the expression of protein biomarkers for lipogenesis regulation, lysosomes and autophagosomes. RESULTS Our results show that a high, 500 µg/ml concentration of dorzolamide causes a significant decrease in Akt signaling and the proliferation of iHMGECs. However, the high dose of dorzolamide also promotes the differentiation of iHMGECs. This response features increases in the number of lysosomes, the accumulation of phospholipids, and the expression of the light chain 3A biomarker for autophagosomes. In contrast, the therapeutic amount (50 µg/ml) of dorzolamide has no impact on the proliferative or differentiative abilities of iHMGECs. CONCLUSIONS Our results support our hypothesis and demonstrate that the CAI dorzolamide does exert a direct influence on the proliferation and differentiation of iHMGECs. However, this effect is elicited only by a high, and not a therapeutic, amount of dorzolamide. Abbreviations: AKT: phosphoinositide 3-kinase-protein kinase B; BPE: bovine pituitary extract; CAD: cationic amphiphilic drug; DED: dry eye disease; DMEM/F12: 1:1 mixture of Dulbecco's modified Eagle's medium and Ham's F-12; EGF: epidermal growth factor; FBS: fetal bovine serum; iHMGECs: immortalized human meibomian gland epithelial cells; KSFM: keratinocyte serum-free medium; LAMP-1: lysosomal-associated membrane protein 1; LC3A: light chain 3A; MGD: meibomian gland dysfunction; SREBP-1: sterol regulatory element-binding protein 1.
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Affiliation(s)
- Xi Han
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School , Boston, Massachusetts, USA.,Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
| | - Shan Yang
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School , Boston, Massachusetts, USA.,Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing, China
| | - Wendy R Kam
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School , Boston, Massachusetts, USA
| | - David A Sullivan
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School , Boston, Massachusetts, USA
| | - Yang Liu
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School , Boston, Massachusetts, USA
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19
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The Impact of Cosmetics on the Physical Dimension and Optical Performance of Contemporary Silicone Hydrogel Contact Lenses. Eye Contact Lens 2020; 46:166-173. [DOI: 10.1097/icl.0000000000000631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Abstract
Cosmetic products are used in large quantities across the world. An increasing number of chemical compounds are being added to the formulation of cosmetic products as additives, fragrances, preservatives, stabilizers, surfactants, dye and shine to potentiate their quality, property and shelf life. Owing to their widespread use, active residues of cosmetic products are continuously introduced into the environment in several ways. Many of these chemicals are bioactive and are characterized by potential bioaccumulation ability and environmental persistence, thus exerting a major risk to humans and the health of ecosystems. Hence, the indiscriminate consumption of cosmetics may present a looming issue with significant adverse impacts on public health. This review intends to spotlight a current overview of toxic ingredients used in formulating cosmetics such as parabens, triclosan, benzalkonium chloride, 1,4-dioxane, plastic microbeads, formaldehyde, diazolidinyl urea, imidazolidinyl urea, sunscreen elements (organic and inorganic UV filters) and trace metals. Specific focus is given to illustrate the biological risks of these substances on human health and aquatic system in terms of genotoxicity, cytotoxicity, neurotoxicity mutagenicity, and estrogenicity. In addition to conclusive remarks, future directions are also suggested.
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21
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Para-phenylenediamine, an oxidative hair dye ingredient, increases thymic stromal lymphopoietin and proinflammatory cytokines causing acute dermatitis. Toxicol Res 2020; 36:329-336. [PMID: 33005592 DOI: 10.1007/s43188-020-00041-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/04/2020] [Accepted: 02/08/2020] [Indexed: 12/24/2022] Open
Abstract
Due to high consumption of cosmetics in modern society, people are always exposed to the risk of skin damage and complications. Para-phenylenediamine (P-PD), an ingredient of hair dye, has been reported to cause allergic contact dermatitis. However, the mechanism has not been well elucidated. Here, we identify that P-PD causes dermatitis by increasing thymic stromal lymphopoietin (TSLP) and inflammatory cytokines. Topical application of P-PD to mouse ear skin in consecutive 5 days resulted in dermatitis symptoms and increased ear thickness. TSLP production in skin was upregulated by P-PD treatment alone. In addition, P-PD-induced TSLP production was potentiated by MC903, which is an in vivo TSLP inducer. P-PD increased TSLP production in keratinocytes (KCMH-1 cells and phorbol 12-myristate 13-acetate-stimulated PAM212 cells). The production of proinflammatory cytokines such as IL-1β, IL-6, IFN-γ, and CCL2, was upregulated by P-PD treatment together with MC903. The results show that repeated exposure to P-PD causes acute contact dermatitis mediated by increasing the expression of TSLP and proinflammatory cytokines.
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22
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Mitochondrial Dysfunctions May Be One of the Major Causative Factors Underlying Detrimental Effects of Benzalkonium Chloride. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8956504. [PMID: 32104543 PMCID: PMC7035552 DOI: 10.1155/2020/8956504] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/23/2019] [Accepted: 01/10/2020] [Indexed: 02/06/2023]
Abstract
Benzalkonium chloride (BAC) is currently the most commonly used antimicrobial preservative in ophthalmic solutions, nasal sprays, and cosmetics. However, a large number of clinical and experimental investigations showed that the topical administration of BAC-containing eye drops could cause a variety of ocular surface changes, from ocular discomfort to potential risk for future glaucoma surgery. BAC-containing albuterol may increase the risk of albuterol-related systemic adverse effects. BAC, commonly present in personal care products, in cosmetic products can induce irritation and dose-dependent changes in the cell morphology. The cationic nature of BAC (it is a quaternary ammonium) suggests that one of the major targets of BAC in the cell may be mitochondria, the only intracellular compartment charged negatively. However, the influence of BAC on mitochondria has not been clearly understood. Here, the effects of BAC on energy parameters of rat liver mitochondria as well as on yeast cells were examined. BAC, being a "weaker" uncoupler, potently inhibited respiration in state 3, diminished the mitochondrial membrane potential, caused opening of the Ca2+/Pi-dependent pore, blocked ATP synthesis, and promoted H2O2 production by mitochondria. BAC triggered oxidative stress and mitochondrial fragmentation in yeast cells. BAC-induced oxidative stress in mitochondria and yeast cells was almost totally prevented by the mitochondria-targeted antioxidant SkQ1; the protective effect of SkQ1 on mitochondrial fragmentation was only partial. Collectively, these data showed that BAC acts adversely on cell bioenergetics (especially on ATP synthesis) and mitochondrial dynamics and that its prooxidant effect can be partially prevented by the mitochondria-targeted antioxidant SkQ1.
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Bilal M, Iqbal HMN. An insight into toxicity and human-health-related adverse consequences of cosmeceuticals - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 670:555-568. [PMID: 30909033 DOI: 10.1016/j.scitotenv.2019.03.261] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/27/2019] [Accepted: 03/17/2019] [Indexed: 02/05/2023]
Abstract
In recent years, the use of cosmeceutical-based personal care and beauty products has ever increased, around the world. Currently, an increasing number of compounds are being assimilated in the formulation of cosmetic products as preservatives, fragrances, surfactants, etc. to intensify the performance, quality, value, and lifespan of cosmetics. Nevertheless, many of these chemical additives pose toxic effects to the human body, exhibiting health risks from a mild hypersensitivity to life-threatening anaphylaxis or lethal intoxication. Therefore, the indiscriminate application of cosmeceuticals has recently become a mounting issue confronting public health. The present review focuses on exposure to a large variety of toxic substances used in cosmetic formulations such as 1,4-dioxane formaldehyde, paraformaldehyde, benzalkonium chloride, imidazolidinyl urea, diazolidinyl urea, trace heavy metals, parabens derivatives, phthalates, isothiazolinone derivatives (methylchloroiso-thiazolinone, and methylisothiazolinone), methyldibromo glutaronitrile, and phenoxy-ethanol. The biological risks related to these substances that they can pose to human health in terms of cytotoxicity, genotoxicity, mutagenicity, neurotoxicity oestrogenicity or others are also discussed. Researchers from academia, consultancy firms, governmental organizations, and cosmetic companies should carry out further progress to keep updating the consumers regarding the dark-sides, and health-related harmful apprehensions of cosmetics. In addition, the industry-motivated initiatives to abate environmental impact through green, sustainable and eco-friendly product development grasp significant perspective.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
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Tekin S, Seven E, Batur M. Evaluation of Antiglaucomatous Drops on Conjunctival Thickness in Patients with Primary Open-Angle Glaucoma. J Ocul Pharmacol Ther 2019; 35:216-222. [DOI: 10.1089/jop.2018.0124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Serek Tekin
- Department of Ophthalmology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Erbil Seven
- Department of Ophthalmology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Muhammed Batur
- Department of Ophthalmology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
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25
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Rath A, Eichhorn M, Träger K, Paulsen F, Hampel U. In vitro effects of benzalkonium chloride and prostaglandins on human meibomian gland epithelial cells. Ann Anat 2018; 222:129-138. [PMID: 30580056 DOI: 10.1016/j.aanat.2018.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/04/2018] [Accepted: 12/11/2018] [Indexed: 01/17/2023]
Abstract
PURPOSE Benzalkonium chloride is the most widely used preservative in ophthalmic topical solutions. The aim of this study was to investigate the influence of BAC as a single substance or as a component of several commercially available ophthalmic solutions on meibomian gland epithelial cells in vitro. MATERIALS AND METHODS An immortalized human meibomian gland epithelial cell line (HMGEC) was used and cells were cultured in the absence or presence of fetal bovine serum to assess cell morphology, cell proliferation, cell viability (MTS assay) and impedance sensing (ECIS) after stimulation with BAC. Further, the viability of HMGECs stimulated with BAC-containing and BAC-free bimatoprost, travoprost and latanoprost was evaluated using the MTS assay. Real-time PCR analysis for hyperkeratinization associated genes (cornulin, involucrin) was performed. RESULTS In the absence of serum, the proliferation rate of HMGECs decreased starting with 0.1μg/ml BAC. At concentrations of 50μg/ml BAC and higher, cell viability was reduced after 10min exposure with a corresponding change in cell morphology. Toxicity of BAC-containing ophthalmic solutions was greater than that of BAC alone, whereas BAC-free alternative products did not significantly influence cell viability. Confluence, cell-cell contacts and serum-containing medium appeared to facilitate HMGECs survival. Expression rate of involucrin and cornulin declined after exposure to preserved bimatoprost and BAC. CONCLUSIONS BAC showed cytotoxic effects on HMGECs starting with a concentration of 0.1μg/ml. The combination of BAC and prostaglandin-analogs might have a synergistic effect which results in higher toxicity than BAC alone. Unpreserved eye drops and eye drops preserved with Polyquaternium-1 are less damaging to HMGECs.
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Affiliation(s)
- Anca Rath
- Department of Anatomy II, Friedrich Alexander University of Erlangen-Nürnberg, Universitätsstraße 19, Erlangen, Germany.
| | - Michael Eichhorn
- Department of Anatomy II, Friedrich Alexander University of Erlangen-Nürnberg, Universitätsstraße 19, Erlangen, Germany.
| | - Katharina Träger
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, Mainz, Germany.
| | - Friedrich Paulsen
- Department of Anatomy II, Friedrich Alexander University of Erlangen-Nürnberg, Universitätsstraße 19, Erlangen, Germany.
| | - Ulrike Hampel
- Department of Anatomy II, Friedrich Alexander University of Erlangen-Nürnberg, Universitätsstraße 19, Erlangen, Germany; Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Langenbeckstr. 1, Mainz, Germany.
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26
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Moshirfar M, Masud M, Shah TJ, Avila MR, Hoopes PC. Chemical conjunctivitis and diffuse lamellar keratitis after removal of eyelash extensions. Am J Ophthalmol Case Rep 2018; 12:21-23. [PMID: 30128373 PMCID: PMC6098230 DOI: 10.1016/j.ajoc.2018.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/04/2018] [Accepted: 07/24/2018] [Indexed: 11/16/2022] Open
Abstract
Purpose There have been several reports in the literature demonstrating the adverse effects of multiple ocular cosmetic procedures, such as eyelash extensions, eyeliner tattoo, and eyelash dyeing. To our knowledge, there is limited literature on the adverse effects specifically attributed to the chemicals and process of eyelash extension removal. Our purpose is to demonstrate the possible ocular injuries from misapplication of eyelash extension removal solvent. Observations We present a unique case of a 46-year-old female with a prior history of laser assisted in-situ keratomileusis (LASIK) who presented with bilateral chemical conjunctivitis and diffuse lamellar keratitis (DLK) secondary to epithelial defects following the misapplication of eyelash extension removal gel. Conclusionand importance Given that our patient suffered significant dry eyes, corneal haze, and visual fluctuation, we believe this case underscores the importance of continuing closer and careful evaluation into the chemicals present in these cosmetics to improve the safety of our patients and to limit such incidents from occurring hereafter.
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Affiliation(s)
- Majid Moshirfar
- John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, University of Utah School of Medicine, Salt Lake City, UT, USA.,Utah Lions Eye Bank, Murray, UT, USA.,HDR Research Center, Hoopes Vision, Draper, UT, USA
| | | | - Tirth J Shah
- Department of Ophthamology, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA
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