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Ali ML, Ferrieres L, Jass J, Hyötyläinen T. Metabolic Changes in Pseudomonas oleovorans Isolated from Contaminated Construction Material Exposed to Varied Biocide Treatments. Metabolites 2024; 14:326. [PMID: 38921461 PMCID: PMC11205842 DOI: 10.3390/metabo14060326] [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: 04/15/2024] [Revised: 05/28/2024] [Accepted: 06/03/2024] [Indexed: 06/27/2024] Open
Abstract
Biocide resistance poses a significant challenge in industrial processes, with bacteria like Pseudomonas oleovorans exhibiting intrinsic resistance to traditional antimicrobial agents. In this study, the impact of biocide exposure on the metabolome of two P. oleovorans strains, namely, P. oleovorans P4A, isolated from contaminated coating material, and P. oleovorans 1045 reference strain, were investigated. The strains were exposed to 2-Methylisothiazol-3(2H)-one (MI) MIT, 1,2-Benzisothiazol-3(2H)-one (BIT), and 5-chloro-2-methyl-isothiazol-3-one (CMIT) at two different sub-inhibitory concentrations and the lipids and polar and semipolar metabolites were analyzed by ultra-high performance liquid chromatography quadrupole time-of-flight mass spectrometry UPLC-Q-TOF/MS. Exposure to the BIT biocide induced significant metabolic modifications in P. oleovorans. Notable changes were observed in lipid and metabolite profiles, particularly in phospholipids, amino acid metabolism, and pathways related to stress response and adaptation. The 1045 strain showed more pronounced metabolic alterations than the P4A strain, suggesting potential implications for lipid, amino acid metabolism, energy metabolism, and stress adaptation. Improving our understanding of how different substances interact with bacteria is crucial for making antimicrobial chemicals more effective and addressing the challenges of resistance. We observed that different biocides trigged significantly different metabolic responses in these strains. Our study shows that metabolomics can be used as a tool for the investigation of metabolic mechanisms underlying biocide resistance, and thus in the development of targeted biocides. This in turn can have implications in combating biocide resistance in bacteria such as P. oleovorans.
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Affiliation(s)
- Muatasem Latif Ali
- School of Science and Technology, Örebro University, Fakultetsgatan 1, SE 701 82 Örebro, Sweden; (M.L.A.); (J.J.)
- Saint-Gobain SWEDEN AB, SCANSPAC, Kemivägen 7, SE 705 97 Glanshammar, Sweden
| | - Lionel Ferrieres
- Saint-Gobain Recherche, 39 Quai Lucien Lefranc, FR-93303 Aubervilliers Cedex, France;
| | - Jana Jass
- School of Science and Technology, Örebro University, Fakultetsgatan 1, SE 701 82 Örebro, Sweden; (M.L.A.); (J.J.)
| | - Tuulia Hyötyläinen
- School of Science and Technology, Örebro University, Fakultetsgatan 1, SE 701 82 Örebro, Sweden; (M.L.A.); (J.J.)
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2
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Lee HK, Kennedy H. Methylisothiazolinone sensitisation in New Zealand is decreasing. Australas J Dermatol 2024. [PMID: 38706204 DOI: 10.1111/ajd.14301] [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: 03/16/2024] [Accepted: 03/27/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND/OBJECTIVES In the last 10 years methylisothiazolinone (MI) emerged as a global cause of preservative-related ACD. New Zealand has liberal regulations for the MI concentration limit in cosmetic products compared to Europe and Australia. The aim of this study was to evaluate the prevalence of MI sensitisation in New Zealand, explore sources of MI exposure and make recommendations on New Zealand regulations for MI use. METHODS This retrospective study included data from patients who underwent patch testing with MI from 2008 to 2021 in a tertiary hospital dermatology clinic and a private dermatology clinic in Auckland, New Zealand. Patient baseline characteristics were recorded along with results of patch testing. Sources of MI exposure were identified from medical records. RESULTS Over the study period, 1049 patch tests were performed in 1044 patients. MI was only tested as a stand-alone allergen from 2015; positive reactions to MI increased from 5.3% in 2015 to a peak of 11.9% in 2017 and then decreased to 6.4% in 2021. The most common source of MI exposure was shampoo or conditioner (27.7% of all relevant reactions) followed by occupational exposures to paints, biocides or glue (19.1%). CONCLUSION Both sensitisation and ACD to MI appear to be decreasing, likely secondary to changes in product compounding due to stricter concentration limits internationally. We recommend New Zealand adopt lower MI concentration limits for cosmetics to match the limits of Australia and Europe.
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Affiliation(s)
- Hyun Kyoung Lee
- Department of Medicine, Health New Zealand, Te Whatu Ora Waitemata, Auckland, New Zealand
| | - Harriet Kennedy
- Department of Dermatology, Health New Zealand, Te Whatu Ora Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
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3
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Gomez Rosado JO, Perez T, Fusco KN, Ahmed F, Nelson TL, Smith TA, Ma H, Barber T. Lady With the Blue Hair: An Atypical Cause of Myasthenic Crisis. Cureus 2024; 16:e60186. [PMID: 38868287 PMCID: PMC11167500 DOI: 10.7759/cureus.60186] [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: 04/01/2024] [Accepted: 05/12/2024] [Indexed: 06/14/2024] Open
Abstract
A myasthenic crisis denotes a severe exacerbation of myasthenia gravis, leading a patient to enter a life-threatening state due to progressing muscle weakness that ultimately results in respiratory failure. A crisis can require intubation, mechanical ventilation, and additional critical care to prevent further decompensation and potentially death. Numerous well-documented precipitating factors exist, such as infections, surgery, stress, and various medications. We present the case of a 43-year-old woman recently diagnosed with myasthenia gravis who has experienced two myasthenic crises since diagnosis without evident triggers such as surgery, changes in medication, or infection. Following an unremarkable initial diagnostic test and continued treatment for the crisis, we sought additional information from the patient's family member at the bedside. We were informed that two weeks prior to both times of crisis with intubation, the patient had dyed her hair blue. The common chemical component in the two different hair dyes used was methylisothiazolinone, which is suspected to have contributed to the exacerbation of the patient's myasthenia gravis. As more evidence for new precipitating factors of myasthenic crises develops, it is crucial for physicians to quickly identify signs and symptoms of a crisis so appropriate intervention can occur in a time-sensitive manner. In addition, myasthenia gravis patients should be made aware to be cautious of precipitating factors of a crisis, including but not limited to new beauty products.
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Affiliation(s)
- Jomaries O Gomez Rosado
- Osteopathic Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, USA
| | - Teresa Perez
- Osteopathic Medicine, Edward Via College of Osteopathic Medicine, Broward Health Medical Center, Fort Lauderdale, USA
| | - Kellie N Fusco
- Osteopathic Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, USA
| | - Faryal Ahmed
- Family Medicine, Broward Health Medical Center, Fort Lauderdale, USA
| | - Tianna L Nelson
- Family Medicine, Broward Health Medical Center, Fort Lauderdale, USA
| | - Taylor A Smith
- Family Medicine, Broward Health Medical Center, Fort Lauderdale, USA
| | - Hoan Ma
- Family Medicine, Broward Health Medical Center, Fort Lauderdale, USA
| | - Tye Barber
- Family Medicine, Broward Health Medical Center, Fort Lauderdale, USA
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Visscher MO, Taleghani A, Nurre M, Meganathan K, Strange R, Kinnett M, Narendran V. Assessment of diaper dermatitis using a novel electronic health record-embedded scale. J Perinatol 2024; 44:501-507. [PMID: 37985814 DOI: 10.1038/s41372-023-01824-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
OBJECTIVE Quantify the evolution and severity of neonatal skin injury, specifically diaper skin compromise, by embedding a validated skin integrity evaluation into the electronic health record (EHR). METHODS Retrospective longitudinal cohort analysis of 747 patients stratified by gestation: 22-27, 28-31, 32-24, and 35-37 weeks, from birth to discharge. Primary outcomes were time to first perineal erythema, duration as percent days with erythema, and severity as maximum score. Data were analyzed using generalized linear models and multiple linear regression methods. RESULTS Seventy percent had erythema and, of these, 34% had at least one high score with bleeding. Days with erythema ranged from 34-44% (p < 0.05). Days to first erythema were inversely correlated with gestational age. Risks for severe injury included short time to first erythema, 5 or more stools/day, infection, and Caucasian race/ethnicity. CONCLUSIONS The EHR-based scale can be readily implemented to mitigate diaper skin compromise in premature infants.
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Affiliation(s)
- Marty O Visscher
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH, USA.
| | - Afshin Taleghani
- Neonatal Intensive Care Unit, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Melissa Nurre
- Neonatal Intensive Care Unit, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Karthikeyan Meganathan
- College of Medicine, Department of Environmental and Public Health, University of Cincinnati, Cincinnati, OH, USA
| | - Ruthann Strange
- Neonatal Intensive Care Unit, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Melissa Kinnett
- Neonatal Intensive Care Unit, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Vivek Narendran
- Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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Basketter DA. Risk management of skin sensitisers: A commentary. Regul Toxicol Pharmacol 2023; 140:105384. [PMID: 37028500 DOI: 10.1016/j.yrtph.2023.105384] [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: 01/16/2023] [Revised: 03/10/2023] [Accepted: 03/25/2023] [Indexed: 04/09/2023]
Abstract
Historically, allergic contact dermatitis (ACD) to chemicals encouraged hazard identification improvements, more sophisticated risk assessment and implementation of regulatory strategies, including banning of specific sensitising substances. The validation process applied to hazard identification methods demonstrates their accuracy; their use to characterise sensitiser potency facilitates quantitative and transparent risk assessment. Diagnostic patch testing at dermatology clinics worldwide delivers feedback showing where risk assessment/management has been insufficient or did not target the exposure of concern, thereby facilitating improvements. When urgent action to protect human health was required, regulations limited/banned, specific skin sensitisers. This can be seen in practice with the fragrance industry, a known source of ACD, thus requiring risk management, usually restrictions to limit allergy induction, and very rarely specific bans on ingredients. Experience and development of more sophisticated tools, e.g. to assess aggregate exposure from multitude of consumer product types, has led to repeated adaptation of risk assessment and promulgation of updated fragrance use limits. Although targeted control may not always lead to rapid change in the overall clinical picture, it is preferable to a blanket undifferentiated regulatory control of all sensitisers, resulting in unwarranted restrictions for many uses of no health concern, with consequent substantial socio-economic impacts.
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Biodefensive Based on Piper nigrum Essential Oil for Controlling of Anopheles aquasalis Larvae: Influence of Temperature (35 °C) and Preservatives. Biomolecules 2022; 12:biom12111711. [DOI: 10.3390/biom12111711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/22/2022] Open
Abstract
Considerable efforts have been spent on the development of biodefensives based on the encapsulation of essential oils for controlling of urban pests from their larval stage, especially as anopheline controlling agents. The larval source management of Anopheles aquasalis is important for malaria prevention. For this reason, this research proposes larvicidal biodefensives based on polymeric particles loaded with Piper nigrum essential oil, considering the influence of temperature (35 °C) and preservatives on the formulation stability. The biodefensive containing the preservative phenoxyethanol/methylisothiazolinone (PNE) resulted in 5 months of shelf-life storage with an Encapsulation Efficiency (EE%) of essential oil of 70%. The biodefensive PNE (containing 500 µg.mL−1 of encapsulated essential oil) presented a polydisperse particle size distribution, ranging from D10 = (127 ± 10) nm to D90 = (472 ± 78) nm and a particle mean size of (236 ± 34) nm. The AFM images revealed a spherical morphology with an external surface almost regular and smooth. The controlled release of the essential oil was evaluated up to 72 h according to the Korsmeyer-Peppas mathematical model, confirming the anomalous transport (n = 0.64 in pH = 3 and pH = 10, and n = 0.65 in pH = 7). The total larvae mortality on the in loco bioassays was almost reached (92%) after 24 h. However, according to the in vitro bioassays applying the in natura essential oil alone, the concentration of 454 μg.mL−1 resulted on the mortality of 70% of the larvae after 24 h. For this reason, the highest efficiency of the biodefensive PNE may be related to the encapsulation of essential oil, delivering the loaded particles more efficiently inside the larvae. From this perspective, the present study shows that a formulation based on P. nigrum essential oil may be taken into account in the integrated management of disease vector mosquitoes.
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Lidén C, Andersson N, White IR. Preservatives in non-cosmetic products: Increasing human exposure requires action for protection of health. Contact Dermatitis 2022; 87:389-405. [PMID: 35794071 PMCID: PMC9796024 DOI: 10.1111/cod.14181] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 12/30/2022]
Abstract
The widespread use of skin sensitizing preservatives is well-known. Contact allergy to preservatives is often caused by their presence in cosmetic products. Preservative use in non-cosmetic products is less well-known. We have reviewed European Union (EU) legislations on classification and labelling, biocides and cosmetics, concerning conditions for use of the most used sensitizing preservatives (including formaldehyde-releasing substances, isothiazolinones and parabens). We have analysed temporal trends in their use in non-cosmetic products (tonnes, number of products, concentrations), based on annual reports to the Swedish Products Register 1995-2018; and we discuss implications for stakeholders. Major changes over time are that the use of most of the preservatives has increased by tonnes and/or by number of products, and that several use concentrations have declined following harmonized classification as a skin sensitizer with low concentration limits for this classification. We conclude that the massive increase in use of preservatives is alarming, and that urgent action is needed for protection of health. Their use in non-cosmetic products is broad, increasing and often undisclosed. In the EU, legislations concerning chemicals can provide relevant restrictions to reduce their use and associated health risks, monitored by efficient surveillance. Prevention would be benefited by better coordination between legislations.
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Affiliation(s)
- Carola Lidén
- Institute of Environmental MedicineKarolinska InstitutetStockholmSweden
| | - Niklas Andersson
- Institute of Environmental MedicineKarolinska InstitutetStockholmSweden
| | - Ian R. White
- Cutaneous Allergy, St. John's Institute of DermatologyGuy's HospitalLondonUK
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8
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A Study on the Behavior Patterns of Liquid Aerosols Using Disinfectant Chloromethylisothiazolinone/Methylisothiazolinone Solution. Molecules 2021; 26:molecules26195725. [PMID: 34641269 PMCID: PMC8510451 DOI: 10.3390/molecules26195725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/10/2021] [Accepted: 09/17/2021] [Indexed: 11/17/2022] Open
Abstract
This study evaluates the behavioral characteristics of components (methylisothiazolinone (MIT) and chloromethylisothiazolinone (CMIT)) contained in disinfectant solutions when they convert to liquid aerosols. The analytical method for MIT and CMIT quantitation was established and optimized using sorbent tube/thermal desorber-gas chromatography-mass spectrometry system; their behavioral characteristics are discussed using the quantitative results of these aerosols under different liquid aerosol generation conditions. MIT and CMIT showed different behavioral characteristics depending on the aerosol mass concentration and sampling time (sampling volume). When the disinfectant solution was initially aerosolized, MIT and CMIT were primarily collected on glass filter (MIT = 91.8 ± 10.6% and CMIT = 90.6 ± 5.18%), although when the generation and filter sampling volumes of the aerosols increased to 30 L, the relative proportions collected on the filter decreased (MIT = 79.0 ± 12.0% and CMIT = 39.7 ± 8.35%). Although MIT and CMIT had relatively high vapor pressure, in liquid aerosolized state, they primarily accumulated on the filter and exhibited particulate behavior. Their relative proportions in the aerosol were different from those in disinfectant solution. In the aerosol with mass concentration of ≤5 mg m-3, the relative proportion deviations of MIT and CMIT were large; when the mass concentration of the aerosol increased, their relative proportions constantly converged at a lower level than those in the disinfectant solution. Hence, it can be concluded that the behavioral characteristics and relative proportions need to be considered to perform the quantitative analysis of the liquid aerosols and evaluate various toxic effects using the quantitative data.
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Abad-Gil L, Lucas-Sánchez S, Gismera MJ, Sevilla MT, Procopio JR. Determination of paraben-, isothiazolinone- and alcohol-type preservatives in personal care products by HPLC with dual (diode-array and fluorescence) detection. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105613] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Rubins A, Romanova A, Septe M, Maddukuri S, Schwartz RA, Rubins S. Contact dermatitis: etiologies of the allergic and irritant type. ACTA DERMATOVENEROLOGICA ALPINA PANNONICA ET ADRIATICA 2020. [DOI: 10.15570/actaapa.2020.37] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Kline JM, Arriaga-Gomez E, Yangdon T, Boo B, Landry J, Saldías-Montivero M, Neamonitaki N, Mengistu H, Silverio S, Zacheis H, Pasha D, Martinov T, Fife BT, Chatterjea D. Repeated dermal application of the common preservative methylisothiazolinone triggers local inflammation, T cell influx, and prolonged mast cell-dependent tactile sensitivity in mice. PLoS One 2020; 15:e0241218. [PMID: 33104726 PMCID: PMC7588120 DOI: 10.1371/journal.pone.0241218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/09/2020] [Indexed: 11/26/2022] Open
Abstract
Occupational exposure to toxic chemicals increases the risk of developing localized provoked vulvodynia-a prevalent, yet poorly understood, chronic condition characterized by sensitivity to touch and pressure, and accumulation of mast cells in painful tissues. Here, we topically sensitized female ND4 Swiss mice to the common household and industrial preservative methylisothiazolinone (MI) and subsequently challenged them daily with MI or acetone and olive oil vehicle on the labiar skin. MI-challenged mice developed significant, persistent tactile sensitivity and long-lasting local accumulation of mast cells alongside early, transient increases in CD4+ and CD8+ T cells, eosinophils, neutrophils, and increases in pro-inflammatory cytokines. Therapeutic administration of imatinib, a c-Kit inhibitor known to inhibit mast cell survival, led to reduced mast cell accumulation and alleviated tactile genital pain. We provide the first pre-clinical evidence of dermal MI-induced mast-cell dependent pain and lay the groundwork for detailed understanding of these intersections between MI-driven immunomodulation and chronic pain.
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Affiliation(s)
- Jaclyn M. Kline
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Erica Arriaga-Gomez
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Tenzin Yangdon
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Beebie Boo
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Jasmine Landry
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | | | - Nefeli Neamonitaki
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Hanna Mengistu
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Sayira Silverio
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Hayley Zacheis
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Dogukan Pasha
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Tijana Martinov
- Department of Medicine, Center for Immunology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Brian T. Fife
- Department of Medicine, Center for Immunology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Devavani Chatterjea
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
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Nowak M, Zawadzka K, Lisowska K. Occurrence of methylisothiazolinone in water and soil samples in Poland and its biodegradation by Phanerochaete chrysosporium. CHEMOSPHERE 2020; 254:126723. [PMID: 32334247 DOI: 10.1016/j.chemosphere.2020.126723] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 01/30/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Methylisothiazolinone is a commonly used biocide that is released into natural environments. In this work, the ability of the fungal strain Phanerochaete chrysosporium DSM 1556 to biotransform this compound was evaluated. The tested strain was able to remove MIT (at concentrations 50 μg L-1 and 30 mg L-1) from the growth medium with the efficiency 90% after the first 6 h and 100% after 12 h of incubation. Moreover, for the first time, qualitative LC-MS/MS and GC-MS analysis showed monohydroxylated and dihydroxylated methylisothiazolinone and N-methylmalonamic acid as the main products of fungal biodegradation. The ecological toxicity of the tested biocide and its derivatives was also evaluated by using an acute toxicity test with Daphnia magna. An approximately 90% decrease in the toxicity of metabolites formed in the P. chrysosporium culture was noticed. The concentration of MIT in soil and water samples collected in Poland was assessed for the first time. The analysis showed that the selected locations in Poland are contaminated by MIT in the range from 1.04-10.08 μg L-1.
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Affiliation(s)
- Marta Nowak
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland
| | - Katarzyna Zawadzka
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland
| | - Katarzyna Lisowska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-237, Lodz, Poland.
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Kim YH, Jo S, An YJ, Choi SJ, Lee K. Thermal Desorption Technique for Analysis of Aerosolized Methylchloroisothiazolinone/Methylisothiazolinone (CMIT/MIT) in Inhalation Toxicity Testing. J Chromatogr Sci 2020; 58:187-194. [PMID: 31885052 DOI: 10.1093/chromsci/bmz108] [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: 10/30/2018] [Revised: 08/08/2019] [Accepted: 10/31/2019] [Indexed: 11/15/2022]
Abstract
When assessing the inhalation toxicity of diverse inhalable substances, a first step is accurate quantitative analysis. In this study, we developed a method for the quantitative analysis of methylisothiazolinone (MIT) and methylchloroisothiazolinone (CMIT), main components in humidifier disinfectants. A simple thermal desorption (TD) method was used to analyze the CMIT/MIT. Using this method, sample loss during aerosolization was minimized compared with other more complicated pretreatment methods, like solvent absorption and extraction (SV). The results of the TD and SV methods were compared to determine the optimal analytical system for CMIT/MIT analysis. In both methods, the concentration of MIT increased systematically with increasing the CMIT/MIT aerosol concentration (R2 > 0.98). The MIT contents in the aerosol given by the two analytical methods were somewhat similar (MIT content = 1.52% (sample solution), 1.43% (TD) and 1.18% (SV)). In contrast, the measured CMIT content in the aerosol was different depending on the type of pretreatment used. The CMIT content was 2.90% for the TD method, while that for the solvent method recorded 0.75% (CMIT content of the sample solution = 4.66%). We confirmed that the sample loss of the CMIT with high reactivity occurred in the complicated sampling and pretreatment steps of the SV method.
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Affiliation(s)
- Yong-Hyun Kim
- Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30, Baekhak 1-gil, Jeongeup-si, Jeollabuk-do 56212, Republic of Korea.,Human and Environmental Toxicology, University of Science & Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seongwon Jo
- Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, 30, Baekhak 1-gil, Jeongeup-si, Jeollabuk-do 56212, Republic of Korea
| | - Young-Ji An
- Department of Toxicology Evaluation, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Republic of Korea
| | - Seong-Jin Choi
- Department of Chemical Material Assessment, Korea Environment Corporation, 42, Hwangyeong-ro, Seo-gu, Incheon 22689, Republic of Korea, Republic of Korea
| | - Kyuhong Lee
- Human and Environmental Toxicology, University of Science & Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,National Center for Efficacy Evaluation of Respiratory Disease Product, Korea Institute of Toxicology, 30, Baekhak 1-gil, Jeongeup-si, Jeollabuk-do 56212, Republic of Korea
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High rate of sensitization to Kathon CG, detected by patch tests in patients with suspected allergic contact dermatitis. An Bras Dermatol 2020; 95:194-199. [PMID: 32156503 PMCID: PMC7175102 DOI: 10.1016/j.abd.2019.09.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 09/01/2019] [Indexed: 12/02/2022] Open
Abstract
Background Kathon CG, a combination of methylchloroisothiazolinone and methylisothiazolinone, is widely used as preservative in cosmetics, as well in household cleaning products, industrial products such as paints and glues. It has emerged as an important sensitizing agent in allergic contact dermatitis. Objectives This study evaluated the reactivity to this substance in patients subjected to patch tests at the Dermatology Institute in Bauru, São Paulo from 2015 to 2017 and its correlation with other preservatives, the professional activity and location of the lesions. Methods The patients were submitted to standard series of epicutaneous tests, standardized by the Brazilian Group Studies on Contact Dermatitis. Results Out the 267 patients tested, 192 presented positivity to at least one substance and 29 of the patients (15.10%) presented reaction to Kathon CG, with predominance of the female gender (n = 27); main professional activity associated with Kathon CG sensibilization was cleaning (17.24%), followed by aesthetic areas (13.79%) and health care (10.34%). The most prevalent sensitizations among the substances tested were nickel sulphate (56.3%), followed by cobalt chloride (23.4%), neomycin (18.2%), potassium dichromate (17.7%), thimerosal (14.5%), formaldehyde (13.2%), paraphenylenediamine (9.3%), and fragrance mix (8.3%). Study limitations We do not have data from patients that were submitted to patch test a decade ago in order to confront to current data and establish whether or no sensitization to Kathon CG has increased. Conclusion High positivity to Kathon CG corroborates the recent findings in the literature, suggesting more attention to concentration of this substance, used in cosmetics and products for domestic use.
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Park EJ, Han JS, Seong E, Park EJ, Lee BS, Lee SJ, Lee K. Inhaled Kathon may induce eosinophilia-mediated disease in the lung. ENVIRONMENTAL TOXICOLOGY 2020; 35:27-36. [PMID: 31498972 DOI: 10.1002/tox.22839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/09/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
In 2011, a link between humidifier disinfectants and patients with idiopathic pulmonary fibrosis was identified in Korea, and Kathon was suggested as one of the causative agents. In this study, Kathon induced apoptotic cell death along with membrane damage at 24 h post-exposure. Additionally, on day 14 after a single instillation with Kathon, the total number of pulmonary cells and the levels of TNF-α, IL-5, IL-13, MIP-1α, and MCP-1α clearly increased in the lung of mice. The proportion of natural killer cells and eosinophils were significantly elevated in the spleen and the bloodstream, respectively, and the level of immunoglobulin (Ig) A, but not IgG, IgM, and IgE, dose-dependently increased. Therefore, we suggest that inhaled Kathon may induce eosinophilia-mediated disease in the lung by disrupting homeostasis of pulmonary surfactants. Considering that eosinophilia is closely related to cancer and fibrosis, further studies are needed to understand the relationship between them.
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Affiliation(s)
- Eun-Jung Park
- Graduate School of East-West Medical Science, Kyung Hee University, Yongin-si, Gyeonggi-do, South Korea
| | - Ji-Seok Han
- Toxicologic Pathology Center, Korea Institute of Toxicology, Daejeon-si, South Korea
| | - Eunsol Seong
- Graduate School of East-West Medical Science, Kyung Hee University, Yongin-si, Gyeonggi-do, South Korea
| | - Eun-Jun Park
- Graduate School of East-West Medical Science, Kyung Hee University, Yongin-si, Gyeonggi-do, South Korea
| | - Byoung-Seok Lee
- Toxicologic Pathology Center, Korea Institute of Toxicology, Daejeon-si, South Korea
| | - Sang Jin Lee
- Respiratory Disease Research Center, Korea Institute of Toxicology, Jeongeup, Jellobuk-do, South Korea
| | - Kyuhong Lee
- Respiratory Disease Research Center, Korea Institute of Toxicology, Jeongeup, Jellobuk-do, South Korea
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16
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Development and Validation of an HPLC Method for Simultaneous Assay of MCI and MI in Shampoos Containing Plant Extracts. Int J Anal Chem 2019; 2019:1851796. [PMID: 31827517 PMCID: PMC6886347 DOI: 10.1155/2019/1851796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/21/2019] [Indexed: 11/29/2022] Open
Abstract
A simple, easy-to-implement HPLC method was developed and validated for simultaneous determination of two isothiazolinone preservatives, methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI), in hair care shampoo containing plant extracts. In this method, shampoo samples were first dissolved in isopropyl myristate and then MCI and MI were extracted from isopropyl myristate layer by a mixture of methanol and 0.02 M phosphate buffer solution pH 3.0 (30: 70, v/v) and analyzed on an analytical biphenyl column maintained at 25°C with a mixture of methanol and water (10: 90, v/v) in isocratic elution mode as mobile phase. Total flow rate of mobile phase was maintained at 1.0 mL per minute. The UV detection was performed at 274 nm. Injection volume was 50 μl. The method was fully validated in terms of specificity, linearity, precision, accuracy, and robustness according to requirements of AOAC International and was proved as reliable and suitable for the intended application.
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17
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Repeated Vaginal Exposures to the Common Cosmetic and Household Preservative Methylisothiazolinone Induce Persistent, Mast Cell-Dependent Genital Pain in ND4 Mice. Int J Mol Sci 2019; 20:ijms20215361. [PMID: 31661848 PMCID: PMC6862067 DOI: 10.3390/ijms20215361] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/14/2019] [Accepted: 10/24/2019] [Indexed: 12/15/2022] Open
Abstract
A history of allergies doubles the risk of vulvodynia—a chronic pain condition of unknown etiology often accompanied by increases in numbers of vulvar mast cells. We previously established the biological plausibility of this relationship in mouse models where repeated exposures to the allergens oxazolone or dinitrofluorobenzene on the labiar skin or inside the vaginal canal of ND4 Swiss Webster outbred mice led to persistent tactile sensitivity and local increases in mast cells. In these models, depletion of mast cells alleviated pain. While exposure to cleaning chemicals has been connected to elevated vulvodynia risk, no single agent has been linked to adverse outcomes. We sensitized female mice to methylisothiazolinone (MI)—a biocide preservative ubiquitous in cosmetics and cleaners—dissolved in saline on their flanks, and subsequently challenged them with MI or saline for ten consecutive days in the vaginal canal. MI-challenged mice developed persistent tactile sensitivity, increased vaginal mast cells and eosinophils, and had higher serum Immunoglobulin E. Therapeutic and preventive intra-vaginal administration of Δ9-tetrahydrocannabinol reduced mast cell accumulation and tactile sensitivity. MI is known to cause skin and airway irritation in humans, and here we provide the first pre-clinical evidence that repeated MI exposures can also provoke allergy-driven genital pain.
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18
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Pónyai G, Németh I, Nagy G, Fábos B, Irinyi B, Dinnyés M, Altmayer A, Temesvári E. Methylchloroisothiazolinone/methylisothiazolinone and methylisothiazolinone hypersensitivity in 1122 patients: A national multicenter study organized by the Hungarian Contact Dermatitis Group. Contact Dermatitis 2019; 81:467-469. [PMID: 31373004 DOI: 10.1111/cod.13370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 07/24/2019] [Accepted: 07/30/2019] [Indexed: 02/03/2023]
Affiliation(s)
- Györgyi Pónyai
- Department of Dermatology, Venerology and Dermato-Oncology, Semmelweis University, Budapest, Hungary
| | - Ilona Németh
- Department of Dermatology, Venerology and Dermato-Oncology, Semmelweis University, Budapest, Hungary
| | - Gabriella Nagy
- Department of Dermatology, Central Hospital of Borsod-Abaúj-Zemplén County, Miskolc, Hungary
| | - Beáta Fábos
- Department of Dermatology, Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Beatrix Irinyi
- Dermatology Clinic, University of Debrecen - Medical Center, Debrecen, Hungary
| | - Mária Dinnyés
- Dermatology Outpatient Unit of Szt. László and Szt, István Hospital, Budapest, Hungary
| | - Anita Altmayer
- Department of Dermatology and Allergology of the Szent-Györgyi Albert Health Center, University of Szeged, Szeged, Hungary
| | - Erzsébet Temesvári
- Department of Dermatology, Venerology and Dermato-Oncology, Semmelweis University, Budapest, Hungary
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19
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Burnett CL, Boyer I, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Gill LJ, Heldreth B. Amended Safety Assessment of Methylisothiazolinone as Used in Cosmetics. Int J Toxicol 2019; 38:70S-84S. [DOI: 10.1177/1091581819838792] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Cosmetic Ingredient Review Expert Panel (Panel) reviewed the safety of methylisothiazolinone (MI), which functions as a preservative. The Panel reviewed relevant animal and human data provided in this safety assessment and in a previously published safety assessment of MI and concluded that MI is safe for use in rinse-off cosmetic products at concentrations up to 100 ppm and safe in leave-on cosmetic products when they are formulated to be nonsensitizing, which may be determined based on a quantitative risk assessment.
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Affiliation(s)
- Christina L. Burnett
- Cosmetic Ingredient Review Scientific Analyst/Writer, Cosmetic Ingredient Review, Washington, DC, USA
| | - Ivan Boyer
- Cosmetic Ingredient Review Former Toxicologist, Cosmetic Ingredient Review, Washington, DC, USA
| | - Wilma F. Bergfeld
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Donald V. Belsito
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Ronald A. Hill
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Curtis D. Klaassen
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Daniel C. Liebler
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - James G. Marks
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Ronald C. Shank
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Thomas J. Slaga
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Paul W. Snyder
- Cosmetic Ingredient Review Expert Panel Member, Cosmetic Ingredient Review, Washington, DC, USA
| | - Lillian J. Gill
- Cosmetic Ingredient Review Former Director, Cosmetic Ingredient Review, Washington, DC, USA
| | - Bart Heldreth
- Cosmetic Ingredient Review Executive Director, Cosmetic Ingredient Review, Washington, DC, USA
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20
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Kim MK, Kim KB, Lee JY, Kwack SJ, Kwon YC, Kang JS, Kim HS, Lee BM. Risk Assessment of 5-Chloro-2-Methylisothiazol-3(2H)-One/2-Methylisothiazol-3(2H)-One (CMIT/MIT) Used as a Preservative in Cosmetics. Toxicol Res 2019; 35:103-117. [PMID: 31015893 PMCID: PMC6467361 DOI: 10.5487/tr.2019.35.2.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 02/06/2023] Open
Abstract
The mixture of 5-chloro-2-methylisothiazol-3(2H)-one (CMIT) and 2-methylisothiazol-3(2H)-one (MIT), CMIT/MIT, is a preservative in cosmetics. CMIT/MIT is a highly effective preservative; however, it is also a commonly known skin sensitizer. Therefore, in the present study, a risk assessment for safety management of CMIT/MIT was conducted on products containing 0.0015% of CMIT/MIT, which is the maximum MIT level allowed in current products. The no observed adverse effect level (NOAEL) for CMIT/MIT was 2.8 mg/kg bw/day obtained from a two-generation reproductive toxicity test, and the skin sensitization toxicity standard value for CMIT/MIT, or the no expected sensitization induction level (NESIL), was 1.25 μg/cm2/day in humans. According to a calculation of body exposure to cosmetics use, the systemic exposure dosage (SED) was calculated as 0.00423 mg/kg bw/day when leave-on and rinse-off products were considered. Additionally, the consumer exposure level (CEL) amounted to 0.77512 μg/cm2/day for all representative cosmetics and 0.00584 μg/cm2/day for rinse-off products only. As a result, the non-cancer margin of safety (MOS) was calculated as 633, and CMIT/MIT was determined to be safe when all representative cosmetics were evaluated. In addition, the skin sensitization acceptable exposure level (AEL)/CEL was calculated as 0.00538 for all representative cosmetics and 2.14225 for rinse-off products; thus, CMIT/MIT was considered a skin sensitizer when all representative cosmetics were evaluated. Current regulations indicate that CMIT/MIT can only be used at concentrations 0.0015% or less and is prohibited from use in other cosmetics products. According to the results of this risk assessment, the CMIT/MIT regulatory values currently used in cosmetics are evaluated as appropriate.
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Affiliation(s)
- Min Kook Kim
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Kyu-Bong Kim
- College of Pharmacy, Dankook University, Cheonan, Korea
| | - Joo Young Lee
- College of Pharmacy, The Catholic University of Korea, Bucheon, Korea
| | - Seung Jun Kwack
- College of Natural Science, Changwon National University, Changwon, Korea
| | - Yong Chan Kwon
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Ji Soo Kang
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Hyung Sik Kim
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Byung-Mu Lee
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Korea
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21
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Salman A, Demir G, Apti O. “Slime”: A trending cause of isothiazolinone contact allergy in children. Contact Dermatitis 2019; 80:409-411. [DOI: 10.1111/cod.13237] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 02/02/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Andac Salman
- Department of DermatologyMarmara University School of Medicine Istanbul Turkey
| | - Gizem Demir
- Department of DermatologyMarmara University School of Medicine Istanbul Turkey
| | - Ozlem Apti
- Department of DermatologyMarmara University School of Medicine Istanbul Turkey
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22
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Dusefante A, Mauro M, Belloni Fortina A, Corradin M, Larese Filon F. Contact allergy to methylchloroisothiazolinone/methylisothiazolinone in north‐eastern Italy: a temporal trend from 1996 to 2016. J Eur Acad Dermatol Venereol 2019; 33:912-917. [DOI: 10.1111/jdv.15453] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 12/19/2018] [Indexed: 11/28/2022]
Affiliation(s)
- A. Dusefante
- Clinical Unit of Occupational Medicine University of Trieste Trieste Italy
| | - M. Mauro
- Clinical Unit of Occupational Medicine University of Trieste Trieste Italy
| | | | | | - F. Larese Filon
- Clinical Unit of Occupational Medicine University of Trieste Trieste Italy
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23
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PANICO A, SERIO F, BAGORDO F, GRASSI T, IDOLO A, DE GIORGI M, GUIDO M, CONGEDO M, DE DONNO A. Skin safety and health prevention: an overview of chemicals in cosmetic products. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2019; 60:E50-E57. [PMID: 31041411 PMCID: PMC6477564 DOI: 10.15167/2421-4248/jpmh2019.60.1.1080] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/14/2019] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Cosmetic products contain a wide range of chemicals to which we are exposed every day. The aim of the study was to determine the presence of potential dangerous substances which can cause adverse health effects by examining product labels. MATERIALS AND METHODS A total of 283 products were collected from various shops in Lecce (Italy) and divided into 3 categories: rinse-off, leave-on and make-up. The label of every product was examined and a list including fragrances, preservatives and other chemicals of concern was created. RESULTS Fragrances were present in 52.3% of the examined products, mostly limonene (76.9%) and linalool (64.6%) but also citronellol (34.1%), geraniol (31.5%), coumarin (30%) and hexyl cinnamal (29.2%). Preservatives showed a rate of 60% and the most frequently identified were phenoxyethanol (48.7%), sodium benzoate (35.6%), potassium sorbate (22%), methylparaben (15.2%) and MI/MCI (9.9%). The other chemicals of concern were detected in 58% of products; included PEGs (62.3%), acrylate copolymer (34%), petrolatum (17.2%), polysorbates (14,8%), BHT (14.7%), ethylhextyl methoxycinnamate (13.6%), benzophenone-1 (3.7%), benzophenone-3 (4.9%), BHA (1.6%), cocamide DEA and toluene (1.2%). CONCLUSIONS The use of many of these substances is allowed within certain limits, due to their toxicity at higher concentrations. Other important aspects should be considered as, for instance, the possibility of long-term effects. On the other hand, other substances may induce several acute adverse side-effects, i.e. contact dermatitis and allergic reactions. For these reasons, an enhancement of the criteria used for cosmetics formulation is required since many chemicals used singularly or combined are potentially unsafe.
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Affiliation(s)
- A. PANICO
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
| | - F. SERIO
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
| | - F. BAGORDO
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
| | - T. GRASSI
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
| | - A. IDOLO
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
| | - M. DE GIORGI
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
| | - M. GUIDO
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
- Interuniversity Research Centre on Influenza and other transmitted infections (CIRI-IT), Genoa, Italy
| | - M. CONGEDO
- Operating Unit of Dermatology, Vito Fazzi Hospital, Lecce, Italy
| | - A. DE DONNO
- Department of Biological and Environmental Science and Technology, University of Salento, Lecce, Italy
- Interuniversity Research Centre on Influenza and other transmitted infections (CIRI-IT), Genoa, Italy
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24
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Sandvik A, Holm J. Severe allergic contact dermatitis in a detergent production worker caused by exposure to methylisothiazolinone. Contact Dermatitis 2018; 80:243-245. [DOI: 10.1111/cod.13182] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 11/13/2018] [Accepted: 11/13/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Anniken Sandvik
- Department of Environmental and Occupational MedicineOslo University Hospital Oslo Norway
| | - Jan‐Øivind Holm
- Department of DermatologyOslo University Hospital Oslo Norway
- Institute of Clinical MedicineUniversity of Oslo Oslo Norway
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25
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Salman A. Methylchloroisothiazolinone and methylisothiazolinone contact allergy: A retrospective cohort study from a tertiary dermatology clinic in Turkey. Contact Dermatitis 2018; 80:193-194. [DOI: 10.1111/cod.13175] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 11/11/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Andac Salman
- Department of DermatologyMarmara University School of Medicine Istanbul Turkey
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26
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Kim HY, Lee YJ, Kim KB. Analytical method development of methylisothiazolinone, a preservative, in rat plasma using LC-MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1100-1101:27-32. [PMID: 30292056 DOI: 10.1016/j.jchromb.2018.09.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/10/2018] [Accepted: 09/16/2018] [Indexed: 11/19/2022]
Abstract
Methylisothiazolinone (MI) is a preservative used in consumer products to control bacterial and fungal growth. MI can be toxic, act as a skin sensitizer and irritant, and initiate lung diseases; therefore, it is important to understand the mechanisms underlying the toxicity of MI in the body. In this study, we developed a method to analyze plasma MI by using an LC-MS/MS-coupled multiple reaction monitoring (MRM) technique, which follows the fragments of a target metabolite in rat plasma. The MRM transition of MI was m/z 116 ➔ 101, and the lower limit of quantification (LLOQ) was set at 10 ng/mL. Including the concentration of LLOQ, a seven-point calibration curve explained much of the variation in the response, and it was strongly linear (R2 = 0.9998); its intra- and inter-day accuracy and precision values were within 15% of the standard deviation (SD%) and along with the FDA and Korea Ministry of Food and Drug Safety guidelines. For intravenous (iv) pharmacokinetic studies of MI using rats, we developed an analytical method that was useful in detecting the profile of MI in the plasma. We also determined half-life, and area under the curve (AUC) of MI using a non-compartment model, and these might be useful for the study of toxic mechanisms of MI in the body.
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Affiliation(s)
- Hyang Yeon Kim
- College of Pharmacy, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, Chungnam 31116, Republic of Korea
| | - Yong Jae Lee
- College of Pharmacy, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, Chungnam 31116, Republic of Korea; Dong-A ST Co., Ltd., Seoul, Republic of Korea
| | - Kyu-Bong Kim
- College of Pharmacy, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, Chungnam 31116, Republic of Korea.
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27
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Herman A, Aerts O, de Montjoye L, Tromme I, Goossens A, Baeck M. Isothiazolinone derivatives and allergic contact dermatitis: a review and update. J Eur Acad Dermatol Venereol 2018; 33:267-276. [PMID: 30284765 DOI: 10.1111/jdv.15267] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/20/2018] [Indexed: 01/12/2023]
Abstract
Allergic contact dermatitis (ACD) from isothiazolinones has frequently been described in the literature. Following an epidemic of sensitization to methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) in the 1980s, and more recently to MI, the Scientific Committee on Consumer Safety of the European Commission banned their use in leave-on products, while restricting that in rinse-off cosmetics. Despite a decreasing prevalence of ACD from MCI/MI and MI, cases caused by occupational exposure and non-cosmetic isothiazolinone sources are on the rise. Moreover, sensitization to newer and lesser known isothiazolinones has been reported. This paper reviews the epidemiology of contact allergy to different isothiazolinones, clinical presentation of isothiazolinone-induced ACD, most relevant sensitization sources and potential cross-reactions between isothiazolinone derivatives. It also provides an update on recent legislative measures.
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Affiliation(s)
- A Herman
- Department of Dermatology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - O Aerts
- Department of Dermatology, University Hospital Antwerp (UZA) and University of Antwerp (UA), Antwerp, Belgium
| | - L de Montjoye
- Department of Dermatology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - I Tromme
- Department of Dermatology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - A Goossens
- Department of Dermatology, University Hospital KU Leuven, Leuven, Belgium
| | - M Baeck
- Department of Dermatology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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28
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Andersson AM, Opstrup MS, Zachariae C, Friis UF, Thyssen JP, Johansen JD. The importance of a complete declaration of isothiazolinones in products beyond cosmetics. Contact Dermatitis 2018; 77:171-172. [PMID: 28766801 DOI: 10.1111/cod.12755] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Anna M Andersson
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark
| | - Morten S Opstrup
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark.,Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark
| | - Claus Zachariae
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark
| | - Ulrik F Friis
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark.,Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark
| | - Jacob P Thyssen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark.,Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark
| | - Jeanne D Johansen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark.,Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark
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29
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Wet Wipe Allergens: Retrospective Analysis From the North American Contact Dermatitis Group 2011-2014. Dermatitis 2018; 28:64-69. [PMID: 28002231 DOI: 10.1097/der.0000000000000248] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Although there are several case reports of wet wipe-associated contact dermatitis, the prevalence of wipes as a source of allergic contact dermatitis in larger populations and the responsible allergens are largely unknown. OBJECTIVE The aim of the study was to determine the prevalence of wet wipes as a source of contact allergy and the most commonly associated allergens in a North American tertiary referral patch test population. METHODS Data collected from 2011 to 2014 by the North American Contact Dermatitis Group was used to conduct a retrospective cross-sectional analysis of patient demographics and patch test results associated with the triple-digit source code for "wet wipe." RESULTS Of the 9037 patients patch tested during the study period, 79 (0.9%) had a positive patch test reaction to an allergen identified with a wet wipe source. The most commonly associated allergens were preservatives, including the following: methylisothiazolinone (MI) (59.0%), methylchloroisothiazolinone (MCI)/MI (35.6%), bronopol (2-bromo-2-nitropropane-1,3-diol) (27.4%), and iodopropynyl butylcarbamate (12.3%). Fragrance (combined) represented 12.3%. Anal/genital dermatitis was 15 times more likely (P < 0.0001) in those with wet wipe allergy. More than 92% of patients with wipe-associated contact allergy had their contact allergens detected by the North American Contact Dermatitis Group screening series. CONCLUSIONS Wet wipes are an important source of contact allergy. Preservatives are the main allergens, especially isothiazolinones.
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30
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Risk Assessment of the Skin Sensitization Induction Potential of Kathon CG in Rinse-off and Leave-on Personal Care and Cosmetic Products. Dermatitis 2018; 29:132-138. [DOI: 10.1097/der.0000000000000359] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Peng F, Mu Z, He C, Xue C, Li W, Wang Q, Chen Z, Zhang J. Patch testing in facial dermatitis using Chinese Baseline Series (60 allergens) and Cosmetic Series (58 allergens). J Eur Acad Dermatol Venereol 2018; 32:e288-e289. [PMID: 29377297 DOI: 10.1111/jdv.14822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- F Peng
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - Z Mu
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - C He
- Beijing Key Laboratory of Plant Resources Research and Development, Beijing Technology and Business University, Beijing, 100012, China
| | - C Xue
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - W Li
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - Q Wang
- Beijing Key Laboratory of Plant Resources Research and Development, Beijing Technology and Business University, Beijing, 100012, China
| | - Z Chen
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - J Zhang
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
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Ezendam J, Bokkers B, Bil W, Delmaar J. Skin sensitisation quantitative risk assessment (QRA) based on aggregate dermal exposure to methylisothiazolinone in personal care and household cleaning products. Food Chem Toxicol 2018; 112:242-250. [DOI: 10.1016/j.fct.2017.12.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/14/2017] [Accepted: 12/22/2017] [Indexed: 11/28/2022]
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An Overview of the Antimicrobial Properties of Hop. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2018. [DOI: 10.1007/978-3-319-67045-4_2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Liao SL, Tseng YH, Chu CY. Contact allergy to methylisothiazolinone/methylchloroisothiazolinone: A retrospective case series in a referral center in northern Taiwan. DERMATOL SIN 2017. [DOI: 10.1016/j.dsi.2017.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Corazza M, Amendolagine G, Cristofaro D, Bernardi T, Foti C, Romita P, Borghi A. Occupational allergic contact dermatitis caused by isothiazolinones in ultrasound gel: 2 cases. Contact Dermatitis 2017; 77:337-338. [DOI: 10.1111/cod.12831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/11/2017] [Accepted: 04/11/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Monica Corazza
- Section of Dermatology, Department of Medical Science; University of Ferrara; 44121 Ferrara Italy
| | - Graziana Amendolagine
- Section of Dermatology, Department of Medical Science; University of Ferrara; 44121 Ferrara Italy
| | - Dario Cristofaro
- Section of Chemistry, Department of Chemical and Pharmaceutical Sciences; University of Ferrara; 44121 Ferrara Italy
| | - Tatiana Bernardi
- Section of Chemistry, Department of Chemical and Pharmaceutical Sciences; University of Ferrara; 44121 Ferrara Italy
| | - Caterina Foti
- Department of Biomedical Science and Human Oncology, Dermatological Clinic; University of Bari; 70124 Bari Italy
| | - Paolo Romita
- Department of Biomedical Science and Human Oncology, Dermatological Clinic; University of Bari; 70124 Bari Italy
| | - Alessandro Borghi
- Section of Dermatology, Department of Medical Science; University of Ferrara; 44121 Ferrara Italy
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Van Huizen AV, Tseng AS, Beane WS. Methylisothiazolinone toxicity and inhibition of wound healing and regeneration in planaria. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 191:226-235. [PMID: 28869924 DOI: 10.1016/j.aquatox.2017.08.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 08/18/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
Methylisothiazolinone (MIT) is a common biocide used in cosmetic and industrial settings. Studies have demonstrated that MIT is a human sensitizer, to the extent that in 2013 MIT was named allergen of the year. Recently, we showed that MIT exposure in Xenopus laevis (the African clawed frog) inhibits wound healing and tail regeneration. However, it is unknown whether MIT affects these processes in other animals. Here, we investigated the effects of MIT exposure in planaria-non-parasitic freshwater flatworms able to regenerate all tissues after injury. Using a common research strain of Dugesia japonica, we determined that intact planarians exposed to 15μM MIT displayed both neuromuscular and epithelial-integrity defects. Furthermore, regenerating (head and tail) fragments exposed to 15μM MIT failed to close wounds or had significantly delayed wound healing. Planarian wounds normally close within 1h after injury. However, most MIT-exposed animals retained open wounds at 24h and subsequently died, and those few animals that were able to undergo delayed wound healing without dying exhibited abnormal regeneration. For instance, head regeneration was severely delayed or inhibited, with anterior structures such as eyes failing to form in newly produced tissues. These data suggest that MIT directly affects both wound healing and regeneration in planarians. Next, we investigated the ability of thiol-containing antioxidants to rescue planarian wound closure during MIT exposure. The data reveal both n-acetyl cysteine and glutathione were each able to fully rescue MIT inhibition of wound healing. Lastly, we established MIT toxicity levels by determining the LC50 of 5 different planarian species: D. japonica, Schmidtea mediterranea, Girardia tigrina, Girardia dorotocephala, and Phagocata gracilis. Our LC50 data revealed that concentrations as low as 39μM (4.5ppm) are lethal to planarians, with concentrations of just 5μM inhibiting wound healing, and suggest that phylogeny is predictive of species toxicity levels. Together these results indicate MIT may have broad wound healing effects on aquatic species in general and are not limited to X. laevis alone. Future studies should investigate the impact of MIT on wound healing in other organisms, including non-aquatic organisms and mammals.
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Affiliation(s)
- Alanna V Van Huizen
- Department of Biological Sciences, Western Michigan University, 1903 West Michigan Avenue, Box 5410, Kalamazoo, MI, 49008, United States
| | - Ai-Sun Tseng
- School of Life Sciences, University of Nevada, Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154, United States
| | - Wendy S Beane
- Department of Biological Sciences, Western Michigan University, 1903 West Michigan Avenue, Box 5410, Kalamazoo, MI, 49008, United States.
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Venables Z, Bourke J, Buckley D, Campbell F, Chowdhury M, Abdul-Ghaffar S, Green C, Holden C, McFadden J, Orton D, Sabroe R, Sansom J, Stone N, Wakelin S, Wilkinson S, Johnston G. Has the epidemic of allergic contact dermatitis due to methylisothiazolinone reached its peak? Br J Dermatol 2017; 177:276-278. [DOI: 10.1111/bjd.15016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - J.F. Bourke
- South Infirmary; Victoria University Hospital; Cork Ireland
| | | | - F. Campbell
- The Queen Elizabeth University Hospital; Glasgow U.K
| | | | | | - C. Green
- Ninewells Hospital and Medical School; Dundee U.K
| | | | - J. McFadden
- St John's Institute of Dermatology; London U.K
| | - D. Orton
- Hillingdon Hospital; Hillingdon U.K
| | | | - J. Sansom
- Bristol Royal Infirmary; Bristol U.K
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Ex vivo human skin permeation of methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI). Arch Toxicol 2017; 91:3529-3542. [DOI: 10.1007/s00204-017-1978-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 04/27/2017] [Indexed: 10/19/2022]
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39
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Epidemic of Isothiazolinone Allergy in North America: Prevalence Data From the North American Contact Dermatitis Group, 2013–2014. Dermatitis 2017; 28:204-209. [DOI: 10.1097/der.0000000000000288] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Wilford JE, de Gannes GC. Methylisothiazolinone Contact Allergy Prevalence in Western Canada: Increased Detection With 2000 ppm Patch Test Allergen. J Cutan Med Surg 2017; 21:207-210. [DOI: 10.1177/1203475417690307] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Contact allergy to methylisothiazolinone (MI) or to the combination of methylchloroisothiazolinone and MI (MCI/MI) is an important and increasing cause of allergic contact dermatitis, with prevalence rates higher than 10% in some centers. Objectives: The objective of this retrospective chart review is to provide a western Canadian perspective on whether the positive patch testing rate to MCI/MI or MI increased during the testing period of 2008 to 2015 and whether the addition of MI at 2000 ppm resulted in increased detection. Methods: We conducted a retrospective chart review of patients who tested positive (n = 104) of 2177 total patients who were patch tested for MCI/MI or MI at a community dermatology clinic in Vancouver, British Columbia, Canada, from January 2008 through April 2015. Results: One hundred and four patients had positive patch testing results for MCI/MI, MI, or both. Positive results increased over the study period, with the highest prevalence in 2015 at 9.41% for MCI/MI, 12.94% for MI, and 15.29% for either. When testing for MI at 2000 ppm was introduced in 2013, the initial positive patch testing prevalence was 6.6%, followed by 10.1% in 2014, and 12.9% in 2015. Conclusions: We demonstrate an increasing prevalence of MCI/MI and MI allergy between 2008 and 2015, with the highest prevalence of 15.29% in 2015 for MCI/MI and/or MI allergy. The addition of MI 2000 ppm greatly increased the positive patch testing yield for MI. Our results support the importance of continued efforts to monitor and regulate these preservatives.
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Affiliation(s)
- Jessica E. Wilford
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC, Canada
| | - Gillian C. de Gannes
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC, Canada
- Division of Dermatology, Department of Medicine, St. Paul’s Hospital and Providence Health Care, Vancouver, BC, Canada
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41
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Use-patterns of personal care and household cleaning products in Switzerland. Food Chem Toxicol 2017; 99:24-39. [DOI: 10.1016/j.fct.2016.10.030] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 10/07/2016] [Accepted: 10/25/2016] [Indexed: 01/01/2023]
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42
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Linauskienė K, Malinauskienė L, Blažienė A. Time trends of contact allergy to the European baseline series in Lithuania. Contact Dermatitis 2016; 76:350-356. [DOI: 10.1111/cod.12726] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 10/11/2016] [Accepted: 10/13/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Kotryna Linauskienė
- Vilnius University Hospital, Santariskiu Klinikos; Center of Pulmonology and Allergology; 08661 Vilnius Lithuania
| | - Laura Malinauskienė
- Vilnius University Hospital, Santariskiu Klinikos; Center of Pulmonology and Allergology; 08661 Vilnius Lithuania
| | - Audra Blažienė
- Vilnius University Hospital, Santariskiu Klinikos; Center of Pulmonology and Allergology; 08661 Vilnius Lithuania
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Delos Santos N, Azmat S, Cuenca Y, Drenth J, Lauper J, Tseng AS. Effects of the biocide methylisothiazolinone on Xenopus laevis wound healing and tail regeneration. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 181:37-45. [PMID: 27810491 DOI: 10.1016/j.aquatox.2016.10.016] [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: 08/09/2016] [Revised: 10/18/2016] [Accepted: 10/19/2016] [Indexed: 06/06/2023]
Abstract
The South African clawed frog, Xenopus laevis, has a strong history as a suitable model for environmental studies. Its embryos and transparent tadpoles are highly sensitive to the environment and their developmental processes are well described. It is also amenable for molecular studies. These characteristics enable its use for rapid identification and understanding of exposure-induced defects. To investigate the consequences of chemical exposure on aquatic animals, Xenopus laevis embryos and tadpoles were exposed to the biocide, methylisothiazolinone (MIT). Frog tadpoles exposed to MIT following tail amputation lost their natural regenerative ability. This inhibition of regeneration led to a failure to regrow tissues including the spinal cord, muscle, and notochord. This MIT-dependent regenerative defect is due to a failure to close the amputation wound. A wound healing assay revealed that while untreated embryos close their wounds within one day after injury, MIT-treated animals maintained open wounds that did not reduce in size and caused lethality. Concomitant exposure of MIT with chemicals containing thiol groups such as glutathione and N-acetyl cysteine restored normal wound healing and regeneration responses in tadpoles. Together these results indicate that exposure to MIT impairs developmental wound repair and tissue regeneration in Xenopus laevis. Thus, this study reveals new aspects of MIT activity and demonstrates that Xenopus laevis is a well-suited model for facilitating future research into chemical exposure effects on injury responses.
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Affiliation(s)
- Nicole Delos Santos
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Summer Azmat
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Yesenia Cuenca
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Jessica Drenth
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Julia Lauper
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Ai-Sun Tseng
- School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 89154, USA.
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Li A, Wu QY, Tian GP, Hu HY. Effective degradation of methylisothiazolone biocide using ozone: Kinetics, mechanisms, and decreases in toxicity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 183:1064-1071. [PMID: 27692888 DOI: 10.1016/j.jenvman.2016.08.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 08/20/2016] [Accepted: 08/22/2016] [Indexed: 06/06/2023]
Abstract
Methylisothiazolone (MIT) is a common biocide that is widely used in water-desalination reverse-osmosis processes. The transformation of MIT during water treatment processes is poorly understood. The kinetics and mechanisms involved in the degradation of MIT during ozonation were investigated in this study. Ozonation was found to be a useful way of degrading MIT in water, and the degradation rate constant was 0.11 (±0.1) × 103 L/(mol·s). The degradation rate constant did not change when the pH was increased from 3 to 9. The pre-exponential factor A and the activation energy Ea for the ozonation process were 7.564 × 1013 L/(mol·s) and 66.74 kJ/mol, respectively. The decrease in the MIT concentration and the amount of ozone consumed were measured, and the stoichiometric factor α for the ozone consumption to MIT removal ratio was found to be 1.8. Several ozonation products were detected using time-of-flight mass spectrometry. Almost 32% of the organic sulfur in the MIT was oxidized to release sulfate ions, which caused a decrease in pH. Sulfur atoms were oxidized to sulfone species and then hydrolyzed to give sulfate during ozonation. Addition reactions involving carbon-carbon double bonds and the oxidation of α-carbon atoms also occurred. MIT was found to be lethal to Daphnia magna Straus (D. magna) with a median lethal concentration of 18.2 μmol/L. Even though the primary ozonation products of MIT still showed some toxicity to D. magna, ozone could minimize the toxic effect after a long reaction time.
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Affiliation(s)
- Ang Li
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China; Shenzhen Laboratory of Microorganism Application and Risk Control, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Qian-Yuan Wu
- Shenzhen Laboratory of Microorganism Application and Risk Control, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China.
| | - Gui-Peng Tian
- Shenzhen Laboratory of Microorganism Application and Risk Control, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; China Construction Water and Environmental Protection Co., Ltd, Beijing 100195, PR China
| | - Hong-Ying Hu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China.
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Garcia-Hidalgo E, Sottas V, von Goetz N, Hauri U, Bogdal C, Hungerbühler K. Occurrence and concentrations of isothiazolinones in detergents and cosmetics in Switzerland. Contact Dermatitis 2016; 76:96-106. [PMID: 27862003 DOI: 10.1111/cod.12700] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/30/2016] [Accepted: 09/01/2016] [Indexed: 01/21/2023]
Abstract
BACKGROUND In recent years, the frequency of contact allergy to isothiazolinones has increased alarmingly in Europe, but only limited data are available on concentrations of isothiazolinones in consumer products. OBJECTIVES To examine the current frequency of isothiazolinones [methylisothiazolinone (MI), methylchloroisothiazolinone (MCI), benzisothiazolinone (BIT), and octylisothiazolinone (OIT)] in a wide array of detergents and cosmetics relevant for the Swiss population. METHODS By means of a market survey, the occurrence of isothiazolinones was investigated in 1948 consumer products. Of these, 88 products were analysed by liquid chromatography-high-resolution mass spectrometry after ultrasonic extraction. RESULTS Only 7.6% of all cosmetics contained isothiazolinones, but the prevalence in detergents was much higher (42.9%). The measured concentration ranges in detergents were 4.3–10, 3.5–279, 3.8–186 and 7.9 ppm (one product only) for MCI, MI, BIT, and OIT, respectively [corrected]. For cosmetics, these were 1.3-133 and 4.8 ppm (one product only) for MI and MCI, respectively. CONCLUSIONS Our study has shown that high concentrations of isothiazolinones (including MI) can be found in a large variety of products, in particular in detergents. Therefore, the safe use of these preservatives should be re-evaluated by including detergents in the exposure assessment.
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Affiliation(s)
- Elena Garcia-Hidalgo
- Swiss Federal Institute of Technology (ETH) Zurich, Institute for Chemical and Bioengineering, 8093, Zürich, Switzerland
| | - Virginie Sottas
- Swiss Federal Institute of Technology (ETH) Zurich, Institute for Chemical and Bioengineering, 8093, Zürich, Switzerland
| | - Natalie von Goetz
- Swiss Federal Institute of Technology (ETH) Zurich, Institute for Chemical and Bioengineering, 8093, Zürich, Switzerland
| | - Urs Hauri
- State Laboratory Basel-City, 4012, Basel, Switzerland
| | - Christian Bogdal
- Swiss Federal Institute of Technology (ETH) Zurich, Institute for Chemical and Bioengineering, 8093, Zürich, Switzerland
| | - Konrad Hungerbühler
- Swiss Federal Institute of Technology (ETH) Zurich, Institute for Chemical and Bioengineering, 8093, Zürich, Switzerland
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Higgins CL, Palmer AM, Cahill JL, Nixon RL. Occupational skin disease among Australian healthcare workers: a retrospective analysis from an occupational dermatology clinic, 1993-2014. Contact Dermatitis 2016; 75:213-22. [PMID: 27436328 DOI: 10.1111/cod.12616] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/17/2016] [Accepted: 04/19/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Healthcare workers (HCWs) are at risk of developing occupational skin disease (OSD). OBJECTIVES To ascertain the causes of OSD in Australian HCWs in a tertiary referral clinic. METHODS A retrospective review was performed of patients assessed at the Occupational Dermatology Clinic in Melbourne from 1993 to 2014. RESULTS Of 685 HCWs assessed in the clinic over a period of 22 years, 555 (81.0%) were diagnosed with OSD. The most common diagnosis was irritant contact dermatitis (ICD) (79.1%), followed by allergic contact dermatitis (ACD) (49.7%). Natural rubber latex allergy was also relatively frequent (13.0%). The major substances causing ACD were rubber glove chemicals (thiuram mix and tetraethylthiuram disulfide), preservatives (formaldehyde, formaldehyde releasers, and isothiazolinones), excipients in hand cleansers, which are hard-to-avoid weak allergens, and antiseptics. ACD caused by commercial hand cleansers occurred more frequently than ACD caused by alcohol-based hand rubs (ABHRs). Occupational ICD was mostly caused by water/wet work and hand cleansers, and environmental irritants such as heat and sweating. CONCLUSIONS Understanding the causes of OSD in HCWs is important in order to develop strategies for prevention. We suggest that skin care advice should be incorporated into hand hygiene education. The use of ABHRs should be encouraged, weak allergens in skin cleansers should be substituted, and accelerator-free gloves should be recommended for HCWs with OSD.
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Affiliation(s)
- Claire L Higgins
- Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation Inc., Carlton, Victoria, 3053, Australia.
| | - Amanda M Palmer
- Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation Inc., Carlton, Victoria, 3053, Australia
| | - Jennifer L Cahill
- Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation Inc., Carlton, Victoria, 3053, Australia
| | - Rosemary L Nixon
- Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation Inc., Carlton, Victoria, 3053, Australia
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Methylchloroisothiazolinone/Methylisothiazolinone and Methylisothiazolinone Sensitivity in Hungary. Dermatol Res Pract 2016; 2016:4579071. [PMID: 27047541 PMCID: PMC4800086 DOI: 10.1155/2016/4579071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/25/2016] [Accepted: 02/08/2016] [Indexed: 11/18/2022] Open
Abstract
Background. Due to allowing of methylisothiazolinone (MI) in cosmetics, cleaning products, and paints, an epidemic of MI-hypersensitivity emerged. Patch testing Kathon CG® (3:1 mixture of methylchloroisothiazolinone and methylisothiazolinone, MCI/MI) does not correctly detect MI contact allergy, due to the low concentration of MI in the test material. Methods. A retrospective survey was performed to estimate the prevalence of MCI/MI hypersensitivity in 14693 patients tested consecutively between 1993 and 2014. Moreover, currently 314 patients were prospectively tested with the allergens MCI/MI and with MI during one year. Results. MCI/MI hypersensitivity increased retrospectively from 0.5% to 6.0%. By current prospective testing we detected 25 patients (8%) with MCI/MI and/or MI positive reactions. Out of the 25 patients 10 were only MCI/MI positive, 9 were only MI positive, and 6 were MCI/MI and MI positive. If MI had not been tested separately, MI contact allergy would have missed in 36% of all detected cases and in 2.8% of the total 314 patients. Conclusions. The frequency of MCI/MI hypersensitivity is increasing also in Hungary. We confirm that, in order to detect MI contact allergy, it needs to be tested separately. A further increase of MI hypersensitivity might be expected in the future as products containing MI are still widely available.
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Park SK, Kwon JH. The fate of two isothiazolinone biocides, 5-chloro-2-methylisothiazol-3(2H)-one (CMI) and 2-methylisothiazol-3(2H)-one (MI), in liquid air fresheners and assessment of inhalation exposure. CHEMOSPHERE 2016; 144:2270-2276. [PMID: 26598996 DOI: 10.1016/j.chemosphere.2015.10.136] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 10/27/2015] [Accepted: 10/31/2015] [Indexed: 06/05/2023]
Abstract
There exist public concerns regarding the two most widely used isothiazolinones (5-chloro-2-methylisothiazol-3(2H)-one (CMI) and 2-methylisothiazol-3(2H)-one (MI)) in various consumer products because they cause allergic responses in dermatitis and are potentially harmful when inhaled. Hydrolysis and photolysis tests for CMI and MI at pH 4, 7, and 9 were performed to evaluate their stability. While MI did not degrade under the test conditions, CMI slightly degraded at pH 9 via hydrolysis and at pH 4 via photolysis. To better understand human exposure to MI and CMI during the use of consumer products, the vaporization rates of MI and CMI from two commercial air fresheners were quantified in a custom-made chamber. The evaporation of MI was almost negligible over 7 d, whereas a significant amount of CMI evaporated over the same period. Because the volume of air freshener decreases over time due to evaporation of water, the MI concentration in the product increased by a factor of 1.8-2.2. The air concentration of CMI was predicted using a ConsExpo model using a fixed weight fraction (model 1) and a new model that reflects changes in the concentrations of active ingredients and the product volume over time (model 2). The concentration determined using model 1 reached a steady-state value of 0.032 µg L(-1), whereas that predicted using model 2 increased consistently. Inhalation exposure was also assessed using two exposure scenarios: a room and a car. Both calculated values of margin of exposure were much higher than 300, indicating a negligible inhalation risk.
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Affiliation(s)
- Seon-Kyung Park
- Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jung-Hwan Kwon
- Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
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Toluene diisocyanate and methylene diphenyl diisocyanate: asthmatic response and cross-reactivity in a mouse model. Arch Toxicol 2015; 90:1709-17. [PMID: 26468151 DOI: 10.1007/s00204-015-1606-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 09/21/2015] [Indexed: 10/22/2022]
Abstract
Both 2,4-toluene diisocyanate (TDI) and 4,4-methylene diphenyl diisocyanate (MDI) can cause occupational asthma. In this study, we optimized our mouse model of chemical-induced asthma in the C57Bl/6 mice strain using the model agent TDI. Furthermore, we validated MDI in this mouse model and investigated whether cross-reactivity between TDI and MDI is present. On days 1 and 8, C57Bl/6 mice were dermally treated (20 µl/ear) with 3 % MDI, 2 % TDI or the vehicle acetone olive oil (AOO) (3:2). On day 15, they received a single oropharyngeal challenge with 0.04 % MDI, 0.01 % TDI or the vehicle AOO (4:1). One day later, airway hyperreactivity (AHR) and pulmonary inflammation in the bronchoalveolar lavage (BAL) were assessed. Furthermore, total serum IgE levels, lymphocyte subpopulations in auricular lymph nodes and cytokine levels in supernatants of lymphocytes were measured. Both dermal sensitization with TDI or MDI resulted in increased total serum IgE levels along with T and B cell proliferation in the auricular lymph nodes. The auricular lymphocytes showed an increased release of both Th2 and Th1 cytokines. Mice sensitized and challenged with either TDI or MDI showed AHR, along with a predominant neutrophil lung inflammation. Mice sensitized with MDI and challenged with TDI or the other way around showed no AHR, nor BAL inflammation. Both TDI and MDI are able to induce an asthma-like response in this mouse model. However, cross-reactivity between both diisocyanates remained absent.
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Mesnage R, Defarge N, Spiroux de Vendômois J, Séralini GE. Potential toxic effects of glyphosate and its commercial formulations below regulatory limits. Food Chem Toxicol 2015; 84:133-53. [PMID: 26282372 DOI: 10.1016/j.fct.2015.08.012] [Citation(s) in RCA: 286] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/10/2015] [Accepted: 08/11/2015] [Indexed: 01/05/2023]
Abstract
Glyphosate-based herbicides (GlyBH), including Roundup, are the most widely used pesticides worldwide. Their uses have increased exponentially since their introduction on the market. Residue levels in food or water, as well as human exposures, are escalating. We have reviewed the toxic effects of GlyBH measured below regulatory limits by evaluating the published literature and regulatory reports. We reveal a coherent body of evidence indicating that GlyBH could be toxic below the regulatory lowest observed adverse effect level for chronic toxic effects. It includes teratogenic, tumorigenic and hepatorenal effects. They could be explained by endocrine disruption and oxidative stress, causing metabolic alterations, depending on dose and exposure time. Some effects were detected in the range of the recommended acceptable daily intake. Toxic effects of commercial formulations can also be explained by GlyBH adjuvants, which have their own toxicity, but also enhance glyphosate toxicity. These challenge the assumption of safety of GlyBH at the levels at which they contaminate food and the environment, albeit these levels may fall below regulatory thresholds. Neurodevelopmental, reproductive, and transgenerational effects of GlyBH must be revisited, since a growing body of knowledge suggests the predominance of endocrine disrupting mechanisms caused by environmentally relevant levels of exposure.
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Affiliation(s)
- R Mesnage
- University of Caen, Institute of Biology and Network on Risks, Quality and Sustainable Environment (MRSH), Esplanade de la Paix, 14032 Caen Cedex, France; CRIIGEN, 81 rue de Monceau, 75008 Paris, France
| | - N Defarge
- University of Caen, Institute of Biology and Network on Risks, Quality and Sustainable Environment (MRSH), Esplanade de la Paix, 14032 Caen Cedex, France; CRIIGEN, 81 rue de Monceau, 75008 Paris, France
| | | | - G E Séralini
- University of Caen, Institute of Biology and Network on Risks, Quality and Sustainable Environment (MRSH), Esplanade de la Paix, 14032 Caen Cedex, France; CRIIGEN, 81 rue de Monceau, 75008 Paris, France.
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