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Kim H, Park J, Lee H, Son J, Park Y, Bae H, Park SY, Lee SH, Seo J, Shin S, Park K. Potency classification of isothiazolinone compounds based on defined approaches of skin sensitization in OECD GL 497. Environ Anal Health Toxicol 2023; 38:e2023026-0. [PMID: 38298045 PMCID: PMC10834078 DOI: 10.5620/eaht.2023026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/28/2023] [Indexed: 02/02/2024] Open
Abstract
Regulatory decisions for skin sensitization are now based on adverse outcome pathway (AOP) and integrated approaches to testing and assessment (IATA). Based on these, Organisation for Economic Co-operation and Development (OECD) guidelines on defined approaches for skin sensitization were adopted with a fixed data interpretation procedure (DIP). In the guidelines, "Defined Approaches" (DA) on skin sensitization uses the results from multiple information sources of in chemico, in vitro, and in silico data to achieve an equivalent predictive capacity as those of the animal tests. In this review, we evaluated the skin sensitization of eleven isothiazolinone compounds including 4,5-Dichloro-2-octyl-3(2H)-isothiazolone (DCOIT), 2-n-Octyl-4-isothiazolin-3-one (OIT), 2-Methyl-4-isothiazolin-3-one (MIT), 1,2-Benzisothiazolin-3-one (BIT), 1,2-Benzisothiazolin-3-one, 2-butyl (BBIT), 5-Chloro-2-methyl-4-isothiazolin-3-one (CMIT), 2-methyl-4,5-trimethylene-4-isothiazolin-3-one (MTMIT), 2-methyl-1,2-benzothiazol-3-one (MBIT), 2-methyl-1,2-benzothiazole-3-thione (MBIT-S), 1,2-benzisothiazolin-3-one, 2-methyl-, 1,1-dioxide (BBIT-O), and a mixture of CMIT/MIT. Data from direct peptide reactivity assay (DPRA), human cell line activation (h-CLAT) test, and quantitative structure activity relationship (QSAR) Toolbox were evaluated and were applied to the DIP to derive a prediction of hazard identification and a potency classification. Among the evaluated chemicals, six isothiazolinone compounds were classified to be UN GHS 1A, one compound to be UN GHS 1, and four compounds could not be classified due to lack of data. The results of sensitizer chemicals were found to coincide well with those of in vivo test.
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Affiliation(s)
- Hyejin Kim
- College of Pharmacy, Dongduk Women’s University, Seoul, Republic of Korea
- TO21 Co., Ltd, 350, Seocho-daero, Seocho-gu, Seoul, Republic of Korea
| | - Juyoung Park
- College of Pharmacy, Dongduk Women’s University, Seoul, Republic of Korea
| | - Handule Lee
- College of Pharmacy, Dongduk Women’s University, Seoul, Republic of Korea
| | - Jinseon Son
- TO21 Co., Ltd, 350, Seocho-daero, Seocho-gu, Seoul, Republic of Korea
| | - Yeonjung Park
- TO21 Co., Ltd, 350, Seocho-daero, Seocho-gu, Seoul, Republic of Korea
| | - Heekyung Bae
- TO21 Co., Ltd, 350, Seocho-daero, Seocho-gu, Seoul, Republic of Korea
| | - Sun-Young Park
- Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Republic of Korea
| | - Sang Hee Lee
- Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Republic of Korea
| | - Jungkwan Seo
- Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Republic of Korea
| | - Sunkyung Shin
- Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Republic of Korea
| | - Kwangsik Park
- College of Pharmacy, Dongduk Women’s University, Seoul, Republic of Korea
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Tang L, Li J, Hu C, Zhou B, Lam PKS, Chen L. Isothiazolinone dysregulates the pattern of miRNA secretion: Endocrine implications for neurogenesis. Environ Int 2023; 181:108308. [PMID: 37939439 DOI: 10.1016/j.envint.2023.108308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
Isothiazolinones are extensively used as preservatives and disinfectants in personal care products and household items. The unintended exposure of humans and animals to isothiazolinones has led to increasing concerns about their health hazards. The compound 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT), a representative isothiazolinone, can simultaneously induce endocrine disruption and neurotoxicity. However, the underlying mechanisms and linkages remain unclear. Our purpose was to elucidate the role of miRNAs as the signaling communicator during the crosstalk between endocrine and nervous systems in response to DCOIT stress. H295R cells were exposed to DCOIT, after which the alterations in intracellular miRNA composition, exosome secretory machinery, and extracellular miRNA composition were examined. Then, a PC12 cell line of neuronal differentiation potential was cultured with the extract of extracellular miRNAs from DCOIT-exposed H295R cell media to explore the functional implications in neurogenesis. The results showed that DCOIT exposure resulted in 349 differentially expressed miRNAs (DEMs) in H295R cells, which were closely related to the regulation of multiple endocrine pathways. In the media of H295R cells exposed to DCOIT, 66 DEMs were identified, showing distinct compositions compared to intracellular DEMs with only 2 common DEMs (e.g., novel-m0541-5p of inverse changes in the cell and medium). Functional annotation showed that extracellular DEMs were not only associated with sex endocrine synchronization, but were also implicated in nervous system development, morphogenesis, and tumor. Incubating PC12 cells with the extracellular exosomes (containing miRNAs) from DCOIT-exposed H295R cells significantly increased the neurite growth, promoted neuronal differentiation, and shaped the transcriptomic fingerprint, implying that miRNAs may communicate transduction of toxic information of DCOIT in endocrine system to neurons. Overall, the present findings provide novel insight into the endocrine disrupting and neural toxicity of DCOIT. The miRNAs have the potential to serve as the epigenetic mechanism of systems toxicology.
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Affiliation(s)
- Lizhu Tang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Bingsheng Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Paul K S Lam
- Department of Science, School of Science and Technology, Hong Kong Metropolitan University, Kowloon, Hong Kong, China
| | - Lianguo Chen
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Sohn S, Huong VT, Nguyen PD, Ly NH, Jang S, Lee H, Lee C, Lee JI, Vasseghian Y, Joo SW, Zoh KD. Equilibria of semi-volatile isothiazolinones between air and glass surfaces measured by gas chromatography and Raman spectroscopy. Environ Res 2023; 218:114908. [PMID: 36442521 DOI: 10.1016/j.envres.2022.114908] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 10/16/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
Trace amounts of semi-volatile organic compounds (SVOCs) of the two isothiazolinones of 2-methylisothiazol-3(2H)-one (MIT) and 2-octyl-4-isothiazolin-3-one (OIT) were detected both in the air and on glass surfaces. Equilibria of SVOCs between air and glass were examined by solid phase microextraction-gas chromatography/mass spectrometry (SPME-GC/MS). Surface to air distribution ratios of Ksa for MIT and OIT were determined to be 5.10 m and 281.74 m, respectively, suggesting more abundant MIT in the gas phase by a factor of ∼55. In addition, a facile method of silver nanocube (AgNC)-assisted surface-enhanced Raman scattering (SERS) has been developed for the rapid and sensitive detection of MIT and OIT on glass surfaces. According to MIT and OIT concentration-correlated SERS intensities of Raman peaks at ∼1585 cm-1 and ∼1125 cm-1, respectively. Their calibration curves have been obtained in the concentration ranges between 10-3 to 10-10 M and 10-3 to 10-11 M with their linearity of 0.9986 and 0.9989 for MIT and OIT, respectively. The limits of detection (LODs) of the two isothiazolinones were estimated at 10-10 M, and 10-11 M for MIT and OIT, respectively. Our results indicate that AgNC-assisted SERS spectra are a rapid and high-ultrasensitive method for the quantification of MIT and OIT in practical applications. The development of analytical methods and determination of the Ksa value obtained in this study can be applied to the prediction of the exposure to MIT and OIT from various chemical products and dynamic behaviors to assess human health risks in indoor environments.
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Affiliation(s)
- Seungwoon Sohn
- Department of Environmental Health Sciences, School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
| | - Vu Thi Huong
- Department of Chemistry, Soongsil University, Seoul, 06978, Republic of Korea
| | - Phuong-Dong Nguyen
- Department of Chemistry, Soongsil University, Seoul, 06978, Republic of Korea
| | - Nguyễn Hoàng Ly
- Department of Chemistry, Gachon University, Seongnam, 13120, Republic of Korea
| | - Soonmin Jang
- Department of Chemistry, Sejong University, Seoul, 143-747, Republic of Korea
| | - Hyewon Lee
- Department of Chemical & Biological Engineering, Seokyeong University, Seoul, 02713, Republic of Korea
| | - Cheolmin Lee
- Department of Chemical & Biological Engineering, Seokyeong University, Seoul, 02713, Republic of Korea
| | - Jung Il Lee
- Korea Testing & Research Institute, Gwacheon, 13810, Republic of Korea
| | - Yasser Vasseghian
- Department of Chemistry, Soongsil University, Seoul, 06978, Republic of Korea; School of Engineering, Lebanese American University, Byblos, Lebanon; University Centre for Research & Development, Department of Mechanical Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, India.
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul, 06978, Republic of Korea.
| | - Kyung-Duk Zoh
- Department of Environmental Health Sciences, School of Public Health, Seoul National University, Seoul 08826, Republic of Korea.
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Lee S, Lee JS, Kho Y, Ji K. Effects of methyl isothiazolinone and octylisothiazolinone on development and thyroid endocrine system in zebrafish larvae. J Hazard Mater 2022; 425:127994. [PMID: 34915294 DOI: 10.1016/j.jhazmat.2021.127994] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 11/28/2021] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
Methylisothiazolinone (MIT) and octylisothiazolinone (OIT) are used as preservatives and biocides to prevent product decay or deterioration. In the present study, developmental toxicity and the effect on the thyroid endocrine system were investigated in zebrafish embryos exposed to MIT and OIT for 96 h. Coagulation was significantly increased when zebrafish embryos were exposed to a concentration of 300 μg/L MIT and ≥ 0.3 μg/L OIT, resulting in a significant decrease in hatchability and larvae survival. The body length in zebrafish larvae exposed to 30 μg/L OIT was significantly shorter than that of the control group. The whole-body levels of triiodothyronine and thyroxine were significantly decreased in larvae exposed to MIT and OIT. Significant upregulation of crh, trh, tshβ, and tshr genes and downregulation of trαa, tg, ttr, and deio2 genes were observed in fish exposed to two isothiazolinones. The expression of dre-miR-193b and dre-miR-499 was significantly increased in zebrafish larvae exposed to MIT and OIT, indicating that epigenetic deregulation of miRNAs modulated genes involved in thyroid hormone regulation. OIT has a higher magnitude of toxicity than MIT, corresponding to the observed changes in thyroid hormones and developmental toxicity.
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Affiliation(s)
- Sujin Lee
- Department of Environmental Health, Graduate School at Yongin University, Yongin 17092, Republic of Korea
| | - Ji-Su Lee
- Department of Health, Environment and Safety, Eulji University, Seongnam, Gyeonggi 13135, Republic of Korea; National Institute of Environmental Research, Incheon 22689, Republic of Korea
| | - Younglim Kho
- Department of Health, Environment and Safety, Eulji University, Seongnam, Gyeonggi 13135, Republic of Korea
| | - Kyunghee Ji
- Department of Environmental Health, Graduate School at Yongin University, Yongin 17092, Republic of Korea.
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Cui J, Cai S, Zhang S, Wang G, Gao C. Degradation of a non-oxidizing biocide in circulating cooling water using UV/persulfate: Kinetics, pathways, and cytotoxicity. Chemosphere 2022; 289:133064. [PMID: 34838601 DOI: 10.1016/j.chemosphere.2021.133064] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/02/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
In industry, isothiazolinone (a mixture containing 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT) and 2-methyl-4-isothiazolin-3-one (MIT), CMIT-MIT) as a non-oxidizing biocide is extensively used to control the growth of microorganisms in the circulating cooling water system, which potentially threatens the ecological environment and human health. In this work, the oxidative degradation of CMIT-MIT by UV/persulfate (PS) technology on a laboratory-scale was systematically investigated. The degradation of CMIT-MIT was greatly improved by UV/PS compared with only UV or oxidant. During the photolysis of 60 mg/L PS, the degradation rate and TOC mineralization rate of CMIT-MIT were 91% and 34.7%, respectively. The contributions of .OH and SO4·- to CMIT-MIT degradation in the UV/PS system were estimated to be 0.93% and 32.12% respectively. The degradation rate of CMIT-MIT decreased slightly with the increase of pH. The presence of SO42- and NO3- had no significant effect on the degradation of CMIT-MIT, while the presence of Cl- and CO32- inhibited the CMIT-MIT removal rate. The degradation pathways and three possible intermediates of CMIT-MIT were obtained. After degradation of CMIT-MIT by UV/PS process, the cytotoxicity decreased within 20 min, effectively indicating that UV/PS could be as a potential technology to remove the CMIT-MIT in water treatment.
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Affiliation(s)
- Jinzhi Cui
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Shaokang Cai
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Shurong Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Guiqiao Wang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Canzhu Gao
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China.
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Lee EB, Lobl M, Ford A, DeLeo V, Adler BL, Wysong A. What Is New in Occupational Allergic Contact Dermatitis in the Year of the COVID Pandemic? Curr Allergy Asthma Rep 2021; 21:26. [PMID: 33779825 PMCID: PMC8006117 DOI: 10.1007/s11882-021-01000-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2021] [Indexed: 12/17/2022]
Abstract
Purpose of Review This article aims to summarize some recent trends in occupational allergic contact dermatitis (ACD), including dermatitis related to pandemic-level personal protective equipment in healthcare workers, hazards patients may experience when working from home, and occupational perspectives on the recent American Contact Dermatitis Society (ACDS) allergens of the year and ACDS Core Allergen Series updates. Recent Findings Recent ACDS Allergens of the Year may be particularly relevant to healthcare workers, including isobornyl acrylate, which is present in glucose sensors and propylene glycol present in hand cleansers and disinfectants. Lavender, limonene, and linalool, all of which are new additions to the ACDS Core Allergen Series, have been reported as causes for occupational ACD in massage therapists and aromatherapists. Isothiazolinone allergy continues to rise in both consumer and occupational settings. Finally, the COVID-19 pandemic has resulted in a wave of occupational ACD in healthcare workers to personal protective equipment, and revealed new potential allergens for individuals working from home. Summary Occupational allergic contact dermatitis continues to exert a significant occupational disease burden. Remaining aware of the current trends in allergens may allow for earlier recognition, diagnosis, and treatment, subsequently helping our patients to work in healthier and safer environments.
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Affiliation(s)
- Erica B Lee
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA
| | - Marissa Lobl
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA
| | - Aubree Ford
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA
| | - Vincent DeLeo
- Department of Dermatology, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Brandon L Adler
- Department of Dermatology, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Ashley Wysong
- Department of Dermatology, University of Nebraska Medical Center, 985645 Nebraska Medical Center, Omaha, NE, 68198-5645, USA.
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Hu K, Li HR, Ou RJ, Li CZ, Yang XL. Tissue accumulation and toxicity of isothiazolinone in Ctenopharyngodon idellus (grass carp): association with P-glycoprotein expression and location within tissues. Environ Toxicol Pharmacol 2014; 37:529-535. [PMID: 24561531 DOI: 10.1016/j.etap.2013.12.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/14/2013] [Accepted: 12/19/2013] [Indexed: 06/03/2023]
Abstract
Isothiazolinone is widely used as a broad-spectrum fungicide in various industries, such as oil, paper, pesticide, dyes, tanning and cosmetics. There is an increasing concern over protection of the aquatic environment due to its large-scale use. The acute toxicity (LC50) of isothiazolinone in Ctenopharyngodon idellus was investigated. The residual time and accumulation in tissues, P-glycoprotein mRNA level and localization of P-glycoprotein in the liver and kidney were also analyzed. The LC50 (48 h) values of isothiazolinone to C. idellus were 0.53±0.17 mg/L and 0.41±0.08 mg/L at 15 °C and 25 °C, respectively. The LC50 values decreased as the temperature increased. The accumulation of isothiazolinone in livers and kidneys in the high temperature group (25 °C) was significantly greater than that of the low temperature group (15 °C). Prolonged tissue residual time of isothiazolinone was seen in all the groups. There were significant differences in P-glycoprotein mRNA expression between isothiazolinone-treated groups and control samples (P<0.05-0.01). Temperature affected accumulation and toxicity of isothiazolinone.
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Affiliation(s)
- Kun Hu
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai 201306, China; Key Laboratory of Fishery Drug Development, Ministry of Agriculture, PR China; Key Laboratory of Aquatic Animal Immune Technology, Guangdong Province, PR China
| | - Hao-Ran Li
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai 201306, China
| | - Ren-Jian Ou
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai 201306, China
| | - Chun-Zeng Li
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai 201306, China
| | - Xian-Le Yang
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai 201306, China.
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