1
|
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.
Collapse
|
2
|
Kitahama Y, Pancorbo PM, Segawa H, Marumi M, Xiao TH, Hiramatsu K, Yang W, Goda K. Place & Play SERS: sample collection and preparation-free surface-enhanced Raman spectroscopy. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1028-1036. [PMID: 36762487 DOI: 10.1039/d2ay02090d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The ability to perform sensitive, real-time, in situ, multiplex chemical analysis is indispensable for diverse applications such as human health monitoring, food safety testing, forensic analysis, environmental sensing, and homeland security. Surface-enhanced Raman spectroscopy (SERS) is an effective tool to offer the ability by virtue of its high sensitivity and rapid label-free signal detection as well as the availability of portable Raman spectrometers. Unfortunately, the practical utility of SERS is limited because it generally requires sample collection and preparation, namely, collecting a sample from an object of interest and placing the sample on top of a SERS substrate to perform a SERS measurement. In fact, not all analytes can satisfy this requirement because the sample collection and preparation process may be undesirable, laborious, difficult, dangerous, costly, or time-consuming. Here we introduce "Place & Play SERS" based on an ultrathin, flexible, stretchable, adhesive, biointegratable gold-deposited polyvinyl alcohol (PVA) nanomesh substrate that enables placing the substrate on top of an object of interest and performing a SERS measurement of the object by epi-excitation without the need for touching, destroying, and sampling it. Specifically, we characterized the sensitivity of the gold/PVA nanomesh substrate in the Place & Play SERS measurement scheme and then used the scheme to conduct SERS measurements of both wet and dry objects under nearly real-world conditions. To show the practical utility of Place & Play SERS, we demonstrated two examples of its application: food safety testing and forensic analysis. Our results firmly verified the new measurement scheme of SERS and are expected to extend the potential of SERS by opening up untapped applications of sensitive, real-time, in situ multiplex chemical analysis.
Collapse
Affiliation(s)
- Yasutaka Kitahama
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.
- LucasLand, Co. Ltd, Tokyo 101-0052, Japan
| | | | - Hiroki Segawa
- Third Department of Forensic Science, National Research Institute of Police Science, Chiba 277-0882, Japan
| | - Machiko Marumi
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.
| | - Ting-Hui Xiao
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.
- LucasLand, Co. Ltd, Tokyo 101-0052, Japan
- Institute for Quantum Life Science, National Institute for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Kotaro Hiramatsu
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.
| | | | - Keisuke Goda
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.
- LucasLand, Co. Ltd, Tokyo 101-0052, Japan
- Institute for Quantum Life Science, National Institute for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
- Institute of Technological Sciences, Wuhan University, Hubei 430072, China
- Department of Bioengineering, University of California, Los Angeles, California 90095, USA
| |
Collapse
|
3
|
Kwon TY, Jeong J, Park E, Cho Y, Lim D, Ko UH, Shin JH, Choi J. Physical analysis reveals distinct responses of human bronchial epithelial cells to guanidine and isothiazolinone biocides. Toxicol Appl Pharmacol 2021; 424:115589. [PMID: 34029620 DOI: 10.1016/j.taap.2021.115589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/18/2021] [Accepted: 05/19/2021] [Indexed: 02/06/2023]
Abstract
Changes in the physical state of the cells can serve as important indicators of stress responses because they are closely linked with the changes in the pathophysiological functions of the cells. Physical traits can be conveniently assessed by analyzing the morphological features and the stresses at the cell-matrix and cell-cell adhesions in both single-cell and monolayer model systems in 2D. In this study, we investigated the mechano-stress responses of human bronchial epithelial cells, BEAS-2B, to two functionally distinct groups of biocides identified during the humidifier disinfectant accident, namely, guanidine (PHMG) and isothiazolinone (CMIT/MIT). We analyzed the physical traits, including cell area, nuclear area, and nuclear shape. While the results showed inconsistent average responses to the biocides, the degree of dispersion in the data set, measured by standard deviation, was remarkably higher in CMIT/MIT treated cells for all traits. As mechano-stress endpoints, traction and intercellular stresses were also measured, and the cytoskeletal actin structures were analyzed using immunofluorescence. This study demonstrates the versatility of the real-time imaging-based biomechanical analysis, which will contribute to identifying the temporally sensitive cellular behaviors as well as the emergence of heterogeneity in response to exogenously imposed stress factors. This study will also shed light on a comparative understanding of less studied substance, CMIT/MIT, in relation to a more studied substance, PHMG, which will further contribute to more strategic planning for proper risk management of the ingredients involved in toxicological accidents.
Collapse
Affiliation(s)
- Tae Yoon Kwon
- Department of Mechanical Engineering, KAIST, 291 Daehakro, Yuseong-gu, Daejeon 34034, Republic of Korea
| | - Jaeseong Jeong
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea
| | - Eunyoung Park
- Department of Mechanical Engineering, KAIST, 291 Daehakro, Yuseong-gu, Daejeon 34034, Republic of Korea
| | - Youngbin Cho
- Department of Mechanical Engineering, KAIST, 291 Daehakro, Yuseong-gu, Daejeon 34034, Republic of Korea
| | - Dongyoung Lim
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea
| | - Ung Hyun Ko
- Department of Mechanical Engineering, KAIST, 291 Daehakro, Yuseong-gu, Daejeon 34034, Republic of Korea
| | - Jennifer H Shin
- Department of Mechanical Engineering, KAIST, 291 Daehakro, Yuseong-gu, Daejeon 34034, Republic of Korea.
| | - Jinhee Choi
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea.
| |
Collapse
|
4
|
Canavez ADPM, de Oliveira Prado Corrêa G, Isaac VLB, Schuck DC, Lorencini M. Integrated approaches to testing and assessment as a tool for the hazard assessment and risk characterization of cosmetic preservatives. J Appl Toxicol 2021; 41:1687-1699. [PMID: 33624850 DOI: 10.1002/jat.4156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 01/21/2023]
Abstract
The safety assessment of cosmetic products is based on the safety of the ingredients, which requires information on chemical structures, toxicological profiles, and exposure data. Approximately 6% of the population is sensitized to cosmetic ingredients, especially preservatives and fragrances. In this context, the aim of this study was to perform a hazard assessment and risk characterization of benzalkonium chloride (BAC), benzyl alcohol (BA), caprylyl glycol (CG), ethylhexylglycerin (EG), chlorphenesin (CP), dehydroacetic acid (DHA), sodium dehydroacetate (SDH), iodopropynyl butylcarbamate (IPBC), methylchloroisothiazolinone and methylisothiazolinone (MCI/MIT), methylisothiazolinone (MIT), phenoxyethanol (PE), potassium sorbate (PS), and sodium benzoate (SB). Considering the integrated approaches to testing and assessment (IATA) and weight of evidence (WoE) as a decision tree, based on published safety reports. The hazard assessment was composed of a toxicological matrix correlating the toxicity level, defined as low (L), moderate (M), or high (H) and local or systemic exposure, considering the endpoints of skin sensitization, skin irritation, eye irritation, phototoxicity, acute oral toxicity, carcinogenicity, mutagenicity/genotoxicity, and endocrine activity. In a risk assessment approach, most preservatives had a margin of safety (MoS) above 100, except for DHA, SDH, and EG, considering the worst-case scenario (100% dermal absorption). However, isolated data do not set up a safety assessment. It is necessary to carry out a rational risk characterization considering hazard and exposure assessment to estimate the level of risk of an adverse health outcome, based on the concentration in a product, frequency of use, type of product, route of exposure, body surface location, and target population.
Collapse
Affiliation(s)
| | | | | | | | - Marcio Lorencini
- Department of Safety Assessment, Grupo Boticário, São José dos Pinhais, PR, Brazil
| |
Collapse
|
5
|
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.
Collapse
|
6
|
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.
Collapse
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
| |
Collapse
|
7
|
Skin Sensitization Induction Risk Assessment of Common Ingredients in Commercially Available Cleansing Conditioners. Dermatitis 2019; 30:116-128. [DOI: 10.1097/der.0000000000000445] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
8
|
Park J, Lee H, Park K. Mixture Toxicity of Methylisothiazolinone and Propylene Glycol at a Maximum Concentration for Personal Care Products. Toxicol Res 2018; 34:355-361. [PMID: 30370010 PMCID: PMC6195885 DOI: 10.5487/tr.2018.34.4.355] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/15/2018] [Accepted: 07/04/2018] [Indexed: 11/20/2022] Open
Abstract
Methylisothiazolinone (MIT) has been used in combination with methylchloroisothiazolinone (CMIT) for cosmetic products such as shampoo, body lotion, and skin care products. The mixture of CMIT/MIT has been found to cause allergic contact dermatitis and is thus no longer permitted for use as a preservative in leave-on cosmetics. However, MIT itself was approved as a stand-alone preservative at a maximum concentration of 100 ppm as the toxicity was derived from CMIT rather than MIT. However, in many countries, allergic skin irritation caused by MIT remains a social concern. In this study, skin irritation was assessed for the presence of MIT, propylene glycol, and their mixture using a 3D human skin model EpiDerm™. Although non-diluted MIT causes serious skin toxicity, skin irritation was not observed at a concentration of 100 ppm, the maximum permissible level for cosmetics and personal care products according to European regulations. Propylene glycol, the most widely used vehicle for MIT, did not cause skin irritation in the 3D skin model. The results are expected to provide information for regulatory policies and guidelines on the use of biocides in consumer products.
Collapse
Affiliation(s)
- Juyoung Park
- College of Pharmacy, Dongduk Women's University, Seoul, Korea
| | - Handule Lee
- College of Pharmacy, Dongduk Women's University, Seoul, Korea
| | - Kwangsik Park
- College of Pharmacy, Dongduk Women's University, Seoul, Korea
| |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
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]
|
11
|
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
|
12
|
Zaragoza-Ninet V, Blasco Encinas R, Vilata-Corell J, Pérez-Ferriols A, Sierra-Talamantes C, Esteve-Martínez A, de la Cuadra-Oyanguren J. Allergic Contact Dermatitis Due to Cosmetics: A Clinical and Epidemiological Study in a Tertiary Hospital. ACTAS DERMO-SIFILIOGRAFICAS 2016. [DOI: 10.1016/j.adengl.2016.02.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
13
|
Zaragoza-Ninet V, Blasco Encinas R, Vilata-Corell J, Pérez-Ferriols A, Sierra-Talamantes C, Esteve-Martínez A, de la Cuadra-Oyanguren J. Dermatitis alérgica de contacto a cosméticos, estudio clínico-epidemiológico en un hospital terciario. ACTAS DERMO-SIFILIOGRAFICAS 2016; 107:329-36. [DOI: 10.1016/j.ad.2015.12.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 12/18/2015] [Accepted: 12/20/2015] [Indexed: 10/22/2022] Open
|
14
|
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: 291] [Impact Index Per Article: 32.3] [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.
Collapse
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.
| |
Collapse
|
15
|
de Unamuno B, Zaragoza Ninet V, Sierra C, de la Cuadra J. Descriptive Study of Sensitization to Methylchloroisothiazolinone and Methylisothiazolinone in a Skin Allergy Unit. ACTAS DERMO-SIFILIOGRAFICAS 2014. [DOI: 10.1016/j.adengl.2014.09.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
16
|
de Unamuno B, Zaragoza Ninet V, Sierra C, de la Cuadra J. Estudio descriptivo de la sensibilización a metilcloroisotiazolinona/metilisotiazolinona en una unidad de alergia cutánea. ACTAS DERMO-SIFILIOGRAFICAS 2014; 105:854-9. [DOI: 10.1016/j.ad.2014.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/28/2014] [Accepted: 02/02/2014] [Indexed: 11/29/2022] Open
|
17
|
|
18
|
Uter W, Geier J, Bauer A, Schnuch A. Risk factors associated with methylisothiazolinone contact sensitization. Contact Dermatitis 2013; 69:231-8. [DOI: 10.1111/cod.12123] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Wolfgang Uter
- Department of Medical Informatics, Biometry and Epidemiology; University of Erlangen/Nürnberg; 91054; Erlangen; Germany
| | - Johannes Geier
- Information Network of Departments of Dermatology; University of Göttingen; 37075; Göttingen; Germany
| | - Andrea Bauer
- Department of Dermatology; University Hospital Carl Gustav Carus; Technical University of Dresden; 01307; Dresden; Germany
| | - Axel Schnuch
- Information Network of Departments of Dermatology; University of Göttingen; 37075; Göttingen; Germany
| |
Collapse
|
19
|
Urwin R, Wilkinson M. Methylchloroisothiazolinone and methylisothiazolinone contact allergy: a new ‘epidemic’. Contact Dermatitis 2013; 68:253-5. [DOI: 10.1111/cod.12064] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
20
|
Svedman C, Andersen KE, Brandão FM, Bruynzeel DP, Diepgen TL, Frosch PJ, Rustemeyer T, Giménez-Arnau A, Gonçalo M, Goossens A, Johansen JD, Lahti A, Menné T, Seidenari S, Tosti A, Wahlberg JE, White IR, Wilkinson JD, Mowitz M, Bruze M. Follow-up of the monitored levels of preservative sensitivity in Europe. Overview of the years 2001-2008. Contact Dermatitis 2012; 67:312-4. [DOI: 10.1111/j.1600-0536.2012.02140.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Uter W, Gefeller O, Geier J, Schnuch A. Methylchloroisothiazolinone/methylisothiazolinone contact sensitization: diverging trends in subgroups of IVDK patients in a period of 19 years. Contact Dermatitis 2012; 67:125-9. [DOI: 10.1111/j.1600-0536.2012.02075.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Thyssen JP, Giménez-Arnau E, Lepoittevin JP, Menné T, Boman A, Schnuch A. The critical review of methodologies and approaches to assess the inherent skin sensitization potential (skin allergies) of chemicals Part II. Contact Dermatitis 2012; 66 Suppl 1:25-52. [DOI: 10.1111/j.1600-0536.2011.02004_3.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
Abstract
Hand dermatitis is a common disease of the skin resulting in significantly decreased quality of life. Allergic contact dermatitis is a frequent cause of hand dermatitis. Recent studies have revealed that biocides used as preservatives are frequent allergens affecting the hands. This article reviews common biocides implicated in hand dermatitis.
Collapse
|
24
|
Abstract
Contact dermatitis can be severe and lead to sick leave as well as significant healthcare expenses. The aim of this review is to present the published knowledge on 6 historical epidemics of contact allergy to apply this knowledge on the prevention and control of future contact allergy epidemics. A historical review is performed on nickel, chromium, methyl-chloro-iso-thiazolinone/methyl-iso-thiazolinone, methyl-di-bromo glucaro-nitrile, formaldehyde, and para-phenylenediamine. The first cases of contact dermatitis are mostly occupational, whereas consumer cases appear later. There is often a latency period from the first cases are observed until an epidemic occurs, and the problem is recognized. Finally, no one seems to take responsibility of dealing with the situation, and there are no attempts of regulation until an epidemic is consolidated among consumers for many years. Steps should be taken to prevent contact allergy epidemics. It is essential that dermatologist, scientists, administrators, and consumers organize and structure known methods to accelerate the control of emerging contact allergens.
Collapse
Affiliation(s)
- Jacob Pontoppidan Thyssen
- Department of Dermato-venerology, National Allergy Research Centre, Gentofte University Hospital, Ledreborg Allé 40, 2820 Gentofte, Denmark.
| | | | | |
Collapse
|
25
|
Zachariae C, Lerbaek A, McNamee PM, Gray JE, Wooder M, Menné T. An evaluation of dose/unit area and time as key factors influencing the elicitation capacity of methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) in MCI/MI-allergic patients. Contact Dermatitis 2006; 55:160-6. [PMID: 16918615 DOI: 10.1111/j.1600-0536.2006.00895.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methylchloroisothiazolinone and methylisothiazolinone (MCI/MI) contact allergy affects 1-3% of patch-tested patients in European centres. The aim of the present study was to evaluate the importance of the factors--time and concentration (dose/per unit area)--in the elicitation capacity by means of a repeated open application test (ROAT) experimental design. The study was designed as a double-blind, placebo-controlled, dose-response ROAT preceded by a diagnostic patch testing. 25 subjects with confirmed MCI/MI allergy and 10 healthy, non-MCI/MI allergic control subjects were exposed to 0.025 microg/cm2 (2 p.p.m.) of MCI/MI/unit area of the skin for 4 weeks. After a wash-out period of at least 4 weeks, the subjects were exposed to 0.094 microg/cm2 (7.5 p.p.m.) of MCI/MI/unit area of the skin for 4 weeks. The study showed the importance of both time and exposure in the elicitation process. It demonstrated that the elicitation threshold for MCI/MI is expected to be in the proximity of 0.025 microg/cm2 although it was not possible to establish a definitive elicitation threshold for MCI/MI in this study.
Collapse
Affiliation(s)
- Claus Zachariae
- Department of Dermatology, Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark.
| | | | | | | | | | | |
Collapse
|
26
|
Thyssen JP, Sederberg-Olsen N, Thomsen JF, Menné T. Contact dermatitis from methylisothiazolinone in a paint factory. Contact Dermatitis 2006; 54:322-4. [PMID: 16787453 DOI: 10.1111/j.0105-1873.2006.00850.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Introduction of new potential contact-sensitizing chemicals have in the past led to epidemics of contact dermatitis. A new preservative containing only methylisothiazolinone (MI) and not methylchloroisothiazolinone (MCI) has recently been introduced in the European Union for use in products, such as paint, glue and cosmetics. The objective of this article is to describe a factory outbreak of contact allergy to MI and MCI preservatives. This factory outbreak describes allergic contact dermatitis towards MI in 4 patients of 14 persons working at a paint manufacturer. Patch test results from all patients showed positive reactions for MI and MCI/MI. The reactions were stronger for MI than MCI/MI indicating a primary sensitization to MI. The combination of MCI/MI remains widely used, and therefore various patterns of exposure and sensitization could be seen in the future. Our data show that MI holds a potential for eliciting and propably inducing contact allergy in humans. Whether this preservative is safe to use in cosmetics where billions of consumers are exposed needs a care full monitoring.
Collapse
Affiliation(s)
- J P Thyssen
- Department of Dermato-venerology, Gentofte Hospital, University of Copenhagen, Niels Andersensvej 65, 2900 Hellerup, Denmark.
| | | | | | | |
Collapse
|
27
|
Abstract
The TRUE Test panels, which are the only patch testing devices approved by the Food and Drug Administration in the US, consist of 24 patches, one of which is a negative control. The remaining 23 patches contain 42 unique allergens and four complex mixtures. Although these panels contain approximately 1.4% of the > 3700 known allergens, they perform robustly in detecting allergic contact dermatitis (ACD). Twenty-eight percent of patients are fully evaluated by application of TRUE Test((R)). The present paper reviews the appropriate use of the TRUE Test panels. The need to determine relevance of any positive reaction is stressed. The common causes of false-positive and false-negative reactions are outlined. Those product types where the TRUE Test panels detect the majority of relevant allergic reactions are reviewed, as are the other sources of exposure to the allergens on these panels. The impact of ACD on quality of life is significant. Only by patch testing can the diagnosis be made.
Collapse
Affiliation(s)
- Donald V Belsito
- Division of Dermatology, University of Kansas Medical Center, Kansas City, 66160-7319, USA.
| |
Collapse
|
28
|
Jensen CD, Johansen JD, Menné T, Andersen KE. Methyldibromoglutaronitrile in rinse-off products causes allergic contact dermatitis: an experimental study. Br J Dermatol 2004; 150:90-5. [PMID: 14746621 DOI: 10.1111/j.1365-2133.2004.05727.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The frequency of sensitivity to the cosmetic preservative methyldibromoglutaronitrile (MDBGN) has increased significantly in Europe. Most cases of allergic contact dermatitis from MDBGN are caused by leave-on cosmetic products. The risk of developing allergic contact dermatitis from rinse-off products has been less studied. OBJECTIVES To investigate the allergic response elicited in presensitized individuals from exposure to a rinse-off product preserved with the maximum permitted level of MDBGN. METHODS Nineteen contact allergic individuals and nine controls participated in a double-blind, randomized repeated open application test (ROAT) using two coded liquid soaps with and without MDBGN. Areas of 50 cm2 on the lower arms were washed with the soaps twice a day for up to 28 days; two of the subjects continued for 34 days. The subjects were also patch tested with a dilution series of MDBGN to determine their patch test threshold values. RESULTS Seven presensitized individuals (37%) developed allergic contact dermatitis from the soap containing MDBGN. The mean dose of MDBGN per application was 2.2 micro g cm-2 and the reactions appeared between days 6 and 34. All nine controls had negative ROATs. The difference in reactivity between test subjects and controls was significant (one-sided Fisher's exact test, P = 0.04). Patch test threshold values ranged from < 0.001% to 0.2% MDBGN in ethanol/water. CONCLUSIONS This study shows that the exposure to a rinse-off product containing the maximum permitted level of MDBGN can easily elicit an allergic response in presensitized individuals. Along with reported cases of induction and elicitation caused by MDBGN in rinse-off products the study indicates that the permitted level of MDBGN in rinse-off products is too high. We recommend that this level should be re-evaluated.
Collapse
Affiliation(s)
- C D Jensen
- Department of Dermatology, Odense University Hospital, University of Southern Denmark, Sdr. Boulevard 29, 5000 Odense C, Denmark.
| | | | | | | |
Collapse
|
29
|
Alexander BR. An assessment of the comparative sensitization potential of some common isothiazolinones. Contact Dermatitis 2002; 46:191-6. [PMID: 12081696 DOI: 10.1034/j.1600-0536.2002.460402.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The isothiazolinones are known contact sensitizers. Data are presented which demonstrate that, in comparison with the chlorinated and dichlorinated compounds which share immunological cross-reactivity, the unchlorinated isothiazolinones have a lower potential for sensitization and no documented immunological cross-reaction with the chlorinated isothiazolinones.
Collapse
Affiliation(s)
- B R Alexander
- Thor Group Management Limited, Margate, Kent, United Kingdom.
| |
Collapse
|
30
|
Wilkinson JD, Shaw S, Andersen KE, Brandao FM, Bruynzeel DP, Bruze M, Camarasa JMG, Diepgen TL, Ducombs G, Frosch PJ, Goossens A, Lachappelle JM, Lahti A, Menné T, Seidenari S, Tosti A, Wahlberg JE. Monitoring levels of preservative sensitivity in Europe. A 10-year overview (1991-2000). Contact Dermatitis 2002; 46:207-10. [PMID: 12081698 DOI: 10.1034/j.1600-0536.2002.460404.x] [Citation(s) in RCA: 186] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A 10-year multicentre analysis of the frequency of sensitivity to common preservatives collected in 16 centres in 11 countries has shown stable but persisting high levels of sensitivity to formaldehyde and 5-chloro-2-methyl-4-isothiazolin-3-one + 2-methyl-4-isothiazolin-3-one (MCI/MI). It has also revealed a significant increase in the level of reactivity to methyldibromoglutaronitrile (MDBGN) from 0.7% in 1991 to 3.5% in 2000. The current high level of sensitivity to MDBGN requires an urgent safety re-evaluation and risk assessment update along with consideration of immediate lowering of use concentrations, especially in leave-on products.
Collapse
Affiliation(s)
- J D Wilkinson
- Department of Dermatology, Amersham Hospital, Bucks, UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Fewings J, Menné T. An update of the risk assessment for methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) with focus on rinse-off products. Contact Dermatitis 1999; 41:1-13. [PMID: 10416701 DOI: 10.1111/j.1600-0536.1999.tb06200.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) has been widely used during the last 20 years for the preservation of aqueous systems in cosmetics, toiletries and in various industrial applications. MCI/MI has a broad spectrum of activity against fungi and bacteria at very low concentrations. The allergic contact potential of MCI/MI has been known for many years. This paper provides a review of pre-clinical and clinical experimental studies as well as experience from dermatology clinics worldwide. This forms the basis for an update of the risk assessment for the use of MCI/MI in rinse-off products. The scientific data indicate that the actual sensitization rate observed with a contact allergen is extremely dependent on dose and type of exposure. This review of the data leads to the conclusion that, under normal use conditions, within the current permitted/ recommended use concentrations for MCI/MI of up to 15ppm, the risk of primary sensitization from the use of rinse-off products is negligible, and elicitation of allergic contact dermatitis in MCI/MI-sensitized individuals rare, after exposure to MCI/MI-preserved rinse-off products.
Collapse
Affiliation(s)
- J Fewings
- Department of Dermatology, University of Copenhagen, Gentofte Hospital, Denmark
| | | |
Collapse
|
32
|
Connor TH, Tee PG, Afshar M, Connor KM. Mutagenicity of cosmetic products containing Kathon. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 1996; 28:127-132. [PMID: 8844994 DOI: 10.1002/(sici)1098-2280(1996)28:2<127::aid-em9>3.0.co;2-c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A variety of shampoos, conditioners, skin-care lotions, and other cosmetic products contain the biocide Kathon CG, which is a mixture of two heterocyclic isothiazolinones: methylisothiazolinone and methylchloroisothiazolinone. This mixture and the related biocide, Kathon 886, have been shown to be potent sensitizers and bacterial mutagens. Five cosmetic products that list the components of Kathon on their labels and two that do not were screened for mutagenicity with Salmonella typhimurium TA100 without S-9. Five of these products and Kathon 886 were further evaluated in TA100 without and with S-9. Kathon 886, a cosmetic product that contained Kathon, and thin layer chromatography-separated components of Kathon 886 were identified by GC/MS analysis. Three of the five products that listed Kathon were direct acting mutagens with TA100. The remaining two products were considerably more toxic than the other products and could not be evaluated for mutagenicity. The addition of S-9 reduced toxicity but did not eliminate mutagenicity. The mutagenic evaluation of Kathon 886 resulted in a dose response similar to that seen with some cosmetic products but at a 1,000-fold lower concentration, and activity was also reduced by the addition of S-9 mix. S-9 reduced activity both with and without cofactors present. Thin layer chromatography separation of the components and subsequent identification by GC/MS indicated that methylisothiazolinone was nonmutagenic while methylchloroisothiazolinone was mutagenic. Additionally, a dichlorinated compound was identified which was also mutagenic. In light of these findings and the reported skin sensitization by Kathon CG in various cosmetics, we recommend that additional testing be done to assure the safety of products containing Kathon CG.
Collapse
Affiliation(s)
- T H Connor
- University of Texas Health Science Center, School of Public Health, Houston 77225, USA
| | | | | | | |
Collapse
|
33
|
Frosch PJ, Lahti A, Hannuksela M, Andersen KE, Wilkinson JD, Shaw S, Lachapelle JM. Chloromethylisothiazolone/methylisothiazolone (CMI/MI) use test with a shampoo on patch-test-positive subjects. Results of a multicentre double-blind crossover trial. Contact Dermatitis 1995; 32:210-7. [PMID: 7600776 DOI: 10.1111/j.1600-0536.1995.tb00671.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A randomized, multicentre, double-blind, 2-period crossover study with 2 shampoos was performed on subjects patch-test-positive to 100 ppm CMI/MI. One shampoo was preserved with 15 ppm a.i. CMI/MI, the other with 0.3% imidazolidinyl urea (IU). 27 subjects from 5 European dermatology clinics participated. 1 subject discontinued use after severe adverse reactions to the CMI/MI-preserved shampoo and did not evaluate the other shampoo. Another 2 subjects developed moderate symptoms with the CMI/MI-preserved shampoo and discontinued its use, but tolerated the IU-preserved shampoo for the full 2-week period. 2 subjects discontinued use after 1 or 2 washes after severe adverse reactions to the IU-preserved shampoo. 1 of these subjects tolerated the CMI/MI-preserved shampoo for 2 weeks without any untoward effects. However, the majority of subjects had negative findings on the scalp, face, neck, and hands for both shampoos. The physicians' global evaluation data indicated that shampoo with CMI/MI caused fewer skin problems than shampoo with IU (38% versus 27%, n.s.), with over 1/3 of the subjects (35%) having no skin problems with either preservative. The current study showed that most subjects previously sensitized to CMI/MI can successfully use shampoo preserved with CMI/MI. Since some subjects previously sensitized to CMI/MI, or possibly to IU, may develop clinical reactions, it would still be prudent for the clinician to advise alternative products to patients with sensitivity to a shampoo or cosmetic ingredient. Full ingredient labelling will ensure that this is possible. As the overall rate of adverse effects in sensitized individuals was low, studies of this nature should also be conducted for other allergens.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- P J Frosch
- Department of Dermatology, Städtischen Kliniken Dortmund
| | | | | | | | | | | | | |
Collapse
|
34
|
Madden SD, Thiboutot DM, Marks JG. Occupationally induced allergic contact dermatitis to methylchloroisothiazolinone/methylisothiazolinone among machinists. J Am Acad Dermatol 1994; 30:272-4. [PMID: 8288792 DOI: 10.1016/s0190-9622(08)81927-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- S D Madden
- Division of Dermatology, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, Hershey
| | | | | |
Collapse
|