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Zarei MH, Pourahmad J. Toxicity of Dibutyl phthalate (DBP) toward isolated human blood lymphocytes: Apoptosis initiated from intracellular calcium enhancement and mitochondrial/lysosomal cross talk. Toxicol Rep 2024; 13:101729. [PMID: 39295952 PMCID: PMC11409181 DOI: 10.1016/j.toxrep.2024.101729] [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: 07/29/2024] [Revised: 08/26/2024] [Accepted: 09/04/2024] [Indexed: 09/21/2024] Open
Abstract
Dibutyl phthalate (DBP) is a phthalate ester with wide application in industrial products, so human exposure can happen in workplaces and environment. Conflicting results have been acquired in researches which measured the influences of phthalates contact on immune responses in laboratory animals. Nevertheless, the straight influence of DBP on human lymphocytes and entire mechanisms of its effect against these cells continue to be unexplored. The major purpose of present research was to evaluate the mechanisms which lead to the DBP toxicity on human lymphocytes using accelerated cytotoxicity mechanisms screening (ACMS) technique. Cell viability was determined following12h incubation of lymphocytes with 0.05-1 mM DBP, and mechanistic parameters were assessed after 2, 4 and 6 h of lymphocyte treatment with ½ the IC5012h (0.3 mM), the IC5012h (0.6 mM) and twice the IC5012h (1.2 mM) of DBP. The IC5012 h of a chemical/toxicant is defined as concentration that kills 50 % of cells after 12 h of exposure. The results indicate that DBP exerts toxic effects on isolated human lymphocytes, probably through mitochondrial and lysosomal damage induced by glutathione depletion and oxidative stress. In this study, suppression of cytokines (IL2, INF-gamma and TNF-alpha) production and increase in intracellular calcium were also related to DBP induced lymphocyte toxicity.
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Affiliation(s)
- Mohammad Hadi Zarei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Jalal Pourahmad
- Department of Toxicology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Orii A, Kurohane K, Sekiguchi K, Tsutsumi M, Imai Y. Comparison of adjuvant mechanisms of medium-chain triacylglycerol in a mouse FITC-induced contact hypersensitivity model. Toxicology 2023; 488:153482. [PMID: 36870414 DOI: 10.1016/j.tox.2023.153482] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/06/2023]
Abstract
The number of allergy sufferers has been increasing with the increase in chemicals to which we are potentially exposed. We have discovered that tributyrin, a short-chain triacylglycerol (TAG), enhanced fluorescein isothiocyanate (FITC)-induced contact hypersensitivity in a mouse model. Medium-chain triacylglycerols (MCTs) are used in cosmetics, with which we come into direct contact frequently, to maintain skin conditions and as a thickening agent for cosmetics. In this study, we examined whether MCTs with different side chain lengths enhanced skin sensitization to FITC in the mouse model. During skin sensitization to FITC, the presence of tributyrin (side chain carbon number, 4; C4) as well as that of each MCT, tricaproin (C6), tricaprylin (C8), or tricaprin (C10), resulted in enhanced skin sensitization, whereas that of trilaurin (C12) did not. As to the mechanism underlying the enhanced sensitization, three MCTs (C6, C8 and C10) facilitated migration of FTIC-presenting CD11c+ dendritic cells to draining lymph nodes. These results indicated that not only tributyrin but also MCTs, up to side chain carbon number 10, have an adjuvant effect on FITC-induced skin hypersensitivity in mice.
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Affiliation(s)
- Akimasa Orii
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka 422-8526, Japan
| | - Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka 422-8526, Japan
| | - Kota Sekiguchi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka 422-8526, Japan
| | - Masato Tsutsumi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka 422-8526, Japan
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka 422-8526, Japan.
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Basso CG, de Araujo-Ramos AT, Martino-Andrade AJ. Exposure to phthalates and female reproductive health: a literature review. Reprod Toxicol 2022; 109:61-79. [DOI: 10.1016/j.reprotox.2022.02.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/10/2022] [Accepted: 02/28/2022] [Indexed: 12/11/2022]
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Filbey KJ, Mehta PH, Meijlink KJ, Pellefigues C, Schmidt AJ, Le Gros G. The Gastrointestinal Helminth Heligmosomoides bakeri Suppresses Inflammation in a Model of Contact Hypersensitivity. Front Immunol 2020; 11:950. [PMID: 32508831 PMCID: PMC7249854 DOI: 10.3389/fimmu.2020.00950] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/22/2020] [Indexed: 01/15/2023] Open
Abstract
Helminths regulate host immune responses to ensure their own long-term survival. Numerous studies have demonstrated that these helminth-induced regulatory mechanisms can also limit host inflammatory responses in several disease models. We used the Heligmosomoides bakeri (Hb) infection model (also known as H. polygyrus or H. polygyrus bakeri in the literature) to test whether such immune regulation affects skin inflammatory responses induced by the model contact sensitiser dibutyl phthalate fluorescein isothiocynate (DBP-FITC). Skin lysates from DBP-FITC-sensitized, Hb-infected mice produced less neutrophil specific chemokines and had significantly reduced levels of skin thickening and cellular inflammatory responses in tissue and draining lymph nodes (LNs) compared to uninfected mice. Hb-induced suppression did not appear to be mediated by regulatory T cells, nor was it due to impaired dendritic cell (DC) activity. Mice cleared of infection remained unresponsive to DBP-FITC sensitization indicating that suppression was not via the secretion of Hb-derived short-lived regulatory molecules, although long-term effects on cells cannot be ruled out. Importantly, similar helminth-induced suppression of inflammation was also seen in the draining LN after intradermal injection of the ubiquitous allergen house dust mite (HDM). These findings demonstrate that Hb infection attenuates skin inflammatory responses by suppressing chemokine production and recruitment of innate cells. These findings further contribute to the growing body of evidence that helminth infection can modulate inflammatory and allergic responses via a number of mechanisms with potential to be exploited in therapeutic and preventative strategies in the future.
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Affiliation(s)
- Kara J Filbey
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - Palak H Mehta
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | | | | | | | - Graham Le Gros
- Malaghan Institute of Medical Research, Wellington, New Zealand
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5
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Panthong S, Imai Y, Matsuoka T, Suzuki W, Watanabe T, Terada Y, Kurohane K, Sekiguchi K, Ogawa E, Endo Y, Itharat A. The role of Piper chaba Hunt. and its pure compound, piperine, on TRPV1 activation and adjuvant effect. BMC Complement Med Ther 2020; 20:134. [PMID: 32370771 PMCID: PMC7201532 DOI: 10.1186/s12906-020-02917-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 04/07/2020] [Indexed: 11/28/2022] Open
Abstract
Background Piper chaba Hunt. is used as an ingredient in Thai traditional preparation for arthritis. Its isolated compound is piperine which shows anti-inflammatory activity. Piperine produces a burning sensation because it activates TRPV1 receptor. The TRPV1 activation involved with the analgesic and adjuvant effect. P. chaba Hunt. has not been reported about TRPV1 activation and adjuvant effect. The aim of this study was to investigate the effect of P. chaba extract and piperine on TRPV1 receptor, which is considered as a target for analgesic and their adjuvant effects to support the development of an analgesic drug from herbal medicine. Methods The effect of P. chaba extract and piperine on HEK cells expressing TRPV1 channel was examined by calcium imaging assay. Adjuvant effects of P. chaba extract and piperine were investigated by a fluorescein isothiocyanate (FITC)-induced contact hypersensitivity (CHS) model in mice. Results P. chaba extract induced calcium influx with EC50 value of 0.67 μg/ml. Piperine induced calcium influx with EC50 value of 0.31 μg/ml or 1.08 μM. For mouse CHS model, we found that 1% piperine, 5% piperine, 1% P. chaba extract and 5% P. chaba extract significantly enhanced sensitization to FITC as revealed by ear swelling responses. Conclusion P. chaba extract and piperine activated TRPV1 channel and enhanced contact sensitization to FITC.
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Affiliation(s)
- Sumalee Panthong
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Klongluang, Pathumthani, 12120, Thailand.,Centre of Excellence in Applied Thai Traditional Medicine Research (CEATMR), Thammasat University, Klongluang, Pathumthani, 12120, Thailand
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Takeshi Matsuoka
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Wakana Suzuki
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Tatsuo Watanabe
- Laboratory of Food Chemistry, School of Food and Nutritional Sciences
- , University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Yuko Terada
- Laboratory of Food Chemistry, School of Food and Nutritional Sciences
- , University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Kota Sekiguchi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Erina Ogawa
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Yukina Endo
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, 422-8526, Japan
| | - Arunporn Itharat
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Klongluang, Pathumthani, 12120, Thailand. .,Centre of Excellence in Applied Thai Traditional Medicine Research (CEATMR), Thammasat University, Klongluang, Pathumthani, 12120, Thailand.
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Matsuo K, Hatanaka S, Kimura Y, Hara Y, Nishiwaki K, Quan YS, Kamiyama F, Oiso N, Kawada A, Kabashima K, Nakayama T. A CCR4 antagonist ameliorates atopic dermatitis-like skin lesions induced by dibutyl phthalate and a hydrogel patch containing ovalbumin. Biomed Pharmacother 2019; 109:1437-1444. [DOI: 10.1016/j.biopha.2018.10.194] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/31/2018] [Accepted: 10/31/2018] [Indexed: 01/06/2023] Open
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Sekiguchi K, Kurohane K, Tsutsumi M, Mochizuki N, Orii A, Nose M, Imai Y. Enhancement of mouse contact hypersensitivity appears with a short chain triacylglycerol but not with a long chain one. Toxicology 2018; 412:48-54. [PMID: 30503584 DOI: 10.1016/j.tox.2018.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 11/23/2018] [Accepted: 11/28/2018] [Indexed: 10/27/2022]
Abstract
The prevalence of skin allergies could be partly due to the increased exposure to chemicals from consumer products. Chemicals that can enhance hypersensitivity caused by other chemicals are the focus of this study. We have demonstrated that phthalate esters with short chain alcohols enhance fluorescein isothiocyanate (FITC)-induced contact hypersensitivity (CHS) in a mouse model. We have also found that tributyrin, a triacylglycerol (TAG) with three butyric acids, enhances sensitization to FITC. To elucidate such an enhanced skin sensitization might be based on a general feature of TAG, we compared tributyrin and triolein, a natural TAG, as to an adjuvant effect on FITC-CHS. Triolein is the dominant TAG in olive oil and contains long chain mono-unsaturated fatty acids. Unlike tributyrin and dibutyl phthalate (DBP), triolein did not exhibit an adjuvant effect. With triolein, enhancement of FITC-presenting CD11c+ dendritic cell trafficking to draining lymph nodes was weak, and the activation status of DC, as revealed as CD86 expression, was low. We found a difference in the pattern of skin cytokine production, i.e., that thymic stromal lymphopoietin was produced with DBP and interleukin-1β with tributyrin. Triolein did not induce either of these cytokines. This illustrates that the adjuvant effect of tributyrin on FITC-CHS is not a general phenomenon for TAGs. Although beneficial effects may be expected through oral administration of tributyrin, the effect on skin immune systems should be considered.
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Affiliation(s)
- Kota Sekiguchi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan
| | - Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan
| | - Masato Tsutsumi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan
| | - Narumi Mochizuki
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan
| | - Akimasa Orii
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan
| | - Mutsumi Nose
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka, 422-8526, Japan.
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Matsuoka T, Endo Y, Kurohane K, Imai Y. Skin Sensitization to Fluorescein Isothiocyanate Is Enhanced by Butyl Paraben in a Mouse Model. Biol Pharm Bull 2018; 41:1853-1858. [PMID: 30282852 DOI: 10.1248/bpb.b18-00584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Contact hypersensitivity (CHS) to preservatives is receiving increased attention. Parabens are widely used in foods, pharmaceutics and cosmetics as preservatives. The skin sensitizing activity of parabens remains controversial but a few investigations have been made as to whether parabens could facilitate sensitization to other chemicals. We have shown that di-n-butyl phthalate (DBP), a phthalate ester, has an adjuvant effect in a fluorescein isothiocyanate (FITC)-induced CHS mouse model. We have also demonstrated that DBP activates transient receptor potential ankyrin 1 (TRPA1) cation channels expressed on sensory neurons. Comparative studies of phthalate esters revealed that TRPA1 agonistic activity and the adjuvant effect on FITC-CHS coincide. Here we focused on two commonly used parabens, butyl paraben (BP) and ethyl paraben (EP), as to their adjuvant effects. BALB/c mice were epicutneously sensitized with FITC in acetone in the presence or absence of a paraben. Sensitization to FITC was evaluated as the ear-swelling response after FITC challenge. BP but not EP enhanced skin sensitization to FITC, but the effect of BP was much weaker than that of DBP. Mechanistically, BP enhanced the trafficking of FITC-presenting CD11c+ dendritic cells (DCs) from the skin to draining lymph nodes as well as cytokine production by draining lymph nodes. When the TRPA1 agonistic activity was measured with a cell line expressing TRPA1, BP exhibited higher activity than EP. The present study provides direct in vivo evidence that BP causes sensitization to other chemicals by means of a mouse FITC-CHS model.
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Affiliation(s)
- Takeshi Matsuoka
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yukina Endo
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
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Beltifa A, Belaid A, Lo Turco V, Machreki M, Ben Mansour H, Di Bella G. Preliminary evaluation of plasticizer and BPA in Tunisian cosmetics and investigation of hazards on human skin cells. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2018; 28:491-501. [PMID: 30010399 DOI: 10.1080/09603123.2018.1489528] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
In this study, 18 plasticizer (phthalates, adipates, sebacates, and others) and BPA residues in some cosmetic samples collected from Tunisian market are evaluated by micro-matrix solid-phase dispersion combined with GC-MS. In parallel, the impact of these molecules and the cosmetics in the human epithelial cell lines is investigated. The cytotoxic activity of cosmetic extracts is evaluated in vitro against B16 and Hep-2 human skin cell lines using the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide assay. This study shows that the tested cosmetic products could constitute a hazard to the consumer health and wellness and that strict safety analysis on cosmetic products needs to be carried out before they are marketed.
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Affiliation(s)
- Asma Beltifa
- a Research Unit of Analysis and Process Applied to Environmental -APAE UR17ES32 Higher Institute of Applied Sciences and Technology Mahdia , University of Monastir , Monastir , Tunisia
- b Faculté des Sciences Mathématiques , Physiques et Naturelles Université Tunis ElManar , Tunis , Tunisia
| | - Afifa Belaid
- a Research Unit of Analysis and Process Applied to Environmental -APAE UR17ES32 Higher Institute of Applied Sciences and Technology Mahdia , University of Monastir , Monastir , Tunisia
| | - Vincenzo Lo Turco
- c Dipartimento di Scienze Biomediche , Odontoiatriche e delle Immagini Morfologiche e Funzionali of the University of Messina , Messina , Italy
| | - Monia Machreki
- a Research Unit of Analysis and Process Applied to Environmental -APAE UR17ES32 Higher Institute of Applied Sciences and Technology Mahdia , University of Monastir , Monastir , Tunisia
| | - Hedi Ben Mansour
- a Research Unit of Analysis and Process Applied to Environmental -APAE UR17ES32 Higher Institute of Applied Sciences and Technology Mahdia , University of Monastir , Monastir , Tunisia
| | - Giuseppa Di Bella
- c Dipartimento di Scienze Biomediche , Odontoiatriche e delle Immagini Morfologiche e Funzionali of the University of Messina , Messina , Italy
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Steinritz D, Stenger B, Dietrich A, Gudermann T, Popp T. TRPs in Tox: Involvement of Transient Receptor Potential-Channels in Chemical-Induced Organ Toxicity-A Structured Review. Cells 2018; 7:cells7080098. [PMID: 30087301 PMCID: PMC6115949 DOI: 10.3390/cells7080098] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/24/2018] [Accepted: 07/31/2018] [Indexed: 12/28/2022] Open
Abstract
Chemicals can exhibit significant toxic properties. While for most compounds, unspecific cell damaging processes are assumed, a plethora of chemicals exhibit characteristic odors, suggesting a more specific interaction with the human body. During the last few years, G-protein-coupled receptors and especially chemosensory ion channels of the transient receptor potential family (TRP channels) were identified as defined targets for several chemicals. In some cases, TRP channels were suggested as being causal for toxicity. Therefore, these channels have moved into the spotlight of toxicological research. In this review, we screened available literature in PubMed that deals with the role of chemical-sensing TRP channels in specific organ systems. TRPA1, TRPM and TRPV channels were identified as essential chemosensors in the nervous system, the upper and lower airways, colon, pancreas, bladder, skin, the cardiovascular system, and the eyes. Regarding TRP channel subtypes, A1, M8, and V1 were found most frequently associated with toxicity. They are followed by V4, while other TRP channels (C1, C4, M5) are only less abundantly expressed in this context. Moreover, TRPA1, M8, V1 are co-expressed in most organs. This review summarizes organ-specific toxicological roles of TRP channels.
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Affiliation(s)
- Dirk Steinritz
- Bundeswehr Institute of Pharmacology and Toxicology, 80937 Munich, Germany.
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-Universität Munich, 80336 Munich, Germany.
| | - Bernhard Stenger
- Bundeswehr Institute of Pharmacology and Toxicology, 80937 Munich, Germany.
| | - Alexander Dietrich
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-Universität Munich, 80336 Munich, Germany.
| | - Thomas Gudermann
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-Universität Munich, 80336 Munich, Germany.
| | - Tanja Popp
- Bundeswehr Institute of Pharmacology and Toxicology, 80937 Munich, Germany.
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-Universität Munich, 80336 Munich, Germany.
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Sekiguchi K, Ogawa E, Kurohane K, Konishi H, Mochizuki N, Manabe K, Imai Y. Adjuvant effect of short chain triacylglycerol tributyrin on a mouse contact hypersensitivity model. Toxicol Lett 2018; 284:56-62. [DOI: 10.1016/j.toxlet.2017.11.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/22/2017] [Accepted: 11/27/2017] [Indexed: 02/07/2023]
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12
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Kurohane K, Kimura A, Terasawa R, Kobayashi K, Suzuki W, Matsuoka T, Imai Y. An Aliphatic Ester Diisopropyl Sebacate Exhibited an Adjuvant Effect on Fluorescein Isothiocyanate-Induced Contact Hypersensitivity Mouse Models. Biol Pharm Bull 2018; 41:147-150. [DOI: 10.1248/bpb.b17-00723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Ayako Kimura
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Rie Terasawa
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Kamiyu Kobayashi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Wakana Suzuki
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Takeshi Matsuoka
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
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Cho Y, Kwon D, Kang SJ. The Cooperative Role of CD326 + and CD11b + Dendritic Cell Subsets for a Hapten-Induced Th2 Differentiation. THE JOURNAL OF IMMUNOLOGY 2017; 199:3137-3146. [PMID: 28972093 DOI: 10.4049/jimmunol.1601262] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 09/06/2017] [Indexed: 01/25/2023]
Abstract
Dendritic cells (DCs) play a critical role in directing immune responses. Previous studies have identified a variety of DC subsets and elucidated their context-dependent functions that parallel those of effector Th cell subsets. However, little is known about the DC subsets responsible for differentiation of Th2 cells governing allergic contact dermatitis. In this study, we sought to determine the DC subset(s) that mediate Th2 priming in hapten-sensitized mice. We induced hapten-specific Th2 differentiation by sensitizing the mice with a single application of FITC dissolved in acetone:dibutyl phthalate, and traced the immune cells responsible for inducing the Th2 differentiation process at the primary stimulation, enabling us to track Th2 priming in vivo and to delete basophils and specific DC subsets. Our analysis revealed that IL-4 was produced in vivo as early as day 3 from CD4+ T cells with a single application of FITC. Basophils, despite producing IL-4 1 d earlier than T cells, were found to be dispensable for Th2 differentiation. Instead, we demonstrated that CD326+ dermal DCs and Langerhans cells were redundantly required for FITC-induced Th2 differentiation in vivo. Moreover, the cooperation of CD326+ Langerhans cells and CD11b+ DCs differentiated naive T cells into Th2 cells in vitro. Collectively, our findings highlight at least two DC subsets that play a critical role in polarizing naive CD4+ T cells to Th2 cells and support a two-hit model for Th2 differentiation.
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Affiliation(s)
- Yuri Cho
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Dohyeong Kwon
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Suk-Jo Kang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
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Morishita Y, Nomura Y, Fukui C, Fujisawa A, Watanabe K, Fujimaki H, Kumada H, Inoue K, Morikawa T, Takahashi M, Kawakami T, Sakoda H, Mukai T, Yuba T, Inamura KI, Tanoue A, Miyazaki KI, Chung UI, Ogawa K, Yoshida M, Haishima Y. Alternative plasticizer, 4-cyclohexene-1,2-dicarboxylic acid dinonyl ester, for blood containers with protective effects on red blood cells and improved cold resistance. J Biomed Mater Res B Appl Biomater 2017; 106:1052-1063. [PMID: 28500731 DOI: 10.1002/jbm.b.33916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 04/10/2017] [Accepted: 04/22/2017] [Indexed: 11/09/2022]
Abstract
Di (2-ethylhexyl) phthalate (DEHP), a typical plasticizer used for polyvinyl chloride (PVC), is eluted from PVC-made blood containers and protects against red blood cell (RBC) hemolysis. However, concerns have arisen regarding the reproductive and developmental risks of DEHP in humans, and the use of alternative plasticizers for medical devices has been recommended worldwide. In this study, we propose that the use of a novel plasticizer, 4-cyclohexene-1,2-dicarboxylic acid dinonyl ester (DL9TH), could help produce more useful and safe blood containers. PVC sheet containing DL9TH and di (2-ethylhexyl) 4-cyclohexene-1,2-dicarboxylate (DOTH) provides comparable or superior protective effects to RBCs relative to PVC sheet containing DEHP or di-isononyl-cyclohexane-1,2-dicarboxylate (DINCH® , an alternative plasticizer that has been used in PVC sheets for blood containers). The total amount of plasticizer eluted from DOTH/DL9TH-PVC sheets is nearly the same as that eluted from DEHP-PVC sheets. In addition, DOTH/DL9TH-PVC has better cold resistance than DEHP- and DINCH® -PVC sheets. In vitro and in vivo tests for biological safety based on International Organization for Standardization guidelines (10993 series) suggest that the DOTH/DL9TH-PVC sheet can be used safely. Subchronic toxicity testing of DL9TH in male rats in accordance with the principles of Organisation for Economic Co-operation and Development Test Guideline 408 showed that DL9TH did not induce adverse effects up to the highest dose level tested (717 mg/kg body weight/day). There were no effects on testicular histopathology and sperm counts, and no indications of endocrine effects: testosterone, thyroid-stimulating hormone, follicle-stimulating hormone, and 17β-estradiol were unchanged by the treatment, compared with the control group. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1052-1063, 2018.
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Affiliation(s)
- Yuki Morishita
- Division of Medical Devices, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Yusuke Nomura
- Division of Medical Devices, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Chie Fukui
- Division of Medical Devices, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Ayano Fujisawa
- Department of Bioengineering, The University of Tokyo Graduate Schools of Engineering and Medicine, Tokyo, 113-0033, Japan
| | - Kayo Watanabe
- Research Department, Public Welfare Institute of Scientific Research Foundation, Tokyo, 184-0015, Japan
| | - Hideo Fujimaki
- Research Department, Public Welfare Institute of Scientific Research Foundation, Tokyo, 184-0015, Japan
| | - Hidefumi Kumada
- Department of Dental Education, Kanagawa Dental University, Kanagawa, 238-8580, Japan
| | - Kaoru Inoue
- Division of Pathology, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Tomomi Morikawa
- Division of Pathology, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Miwa Takahashi
- Division of Pathology, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Tsuyoshi Kawakami
- Division of Environmental Chemistry, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Hideyuki Sakoda
- Division of Medical Devices, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Tomokazu Mukai
- Corporate Research and Development Division, Kawasumi Laboratories, Tokyo, 108-6109, Japan
| | - Toshiyasu Yuba
- Corporate Research and Development Division, Kawasumi Laboratories, Tokyo, 108-6109, Japan
| | - Ken-Ichi Inamura
- Corporate Research and Development Division, Kawasumi Laboratories, Tokyo, 108-6109, Japan
| | - Akito Tanoue
- Department of Pharmacology, National Research Institute for Child Health and Development, Tokyo, 157-8535, Japan
| | | | - Ung-Il Chung
- Department of Bioengineering, The University of Tokyo Graduate Schools of Engineering and Medicine, Tokyo, 113-0033, Japan
| | - Kumiko Ogawa
- Division of Pathology, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Midori Yoshida
- Division of Pathology, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Yuji Haishima
- Division of Medical Devices, National Institute of Health Sciences, Tokyo, 158-8501, Japan
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Mouse Model of Hydroquinone Hypersensitivity via Innate and Acquired Immunity and its Promotion by Combined Reagents. J Invest Dermatol 2017; 137:1082-1093. [PMID: 28108299 DOI: 10.1016/j.jid.2016.12.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 12/08/2016] [Accepted: 12/20/2016] [Indexed: 02/02/2023]
Abstract
We established a mouse model of contact hypersensitivity (CHS) to hydroquinone (HQ), a widespread chemical in our environment. HQ was painted onto flanks; then, HQ was challenged by painting onto ear pinnas on days 7 and 14. The CHS after the second challenge was markedly greater than that after the first challenge. Both challenges increased thymic stromal lymphopoietin and T helper type 2 cytokines in ear pinnas, whereas IFN-γ (typical T helper type 1 cytokine) was decreased, despite an increase in IL-18 (typical IFN-γ inducer). In nude mice (T cell-reduced), although a first challenge induced CHS, a second challenge did not augment it. In severe combined immunodeficient, severe combined immunodeficient-beige, and IL-1-deficient mice, CHS was not induced. However, CHS was inducible in severe combined immunodeficient-beige mice after transfer of natural killer cells from HQ-sensitized normal mice. Tretinoin (used for enhancing the skin-whitening effect of HQ) and resin monomers (used to prevent polymerization of HQ) lowered the HQ concentration needed to establish sensitization to HQ. The augmented CHS after a second challenge was reduced by JNJ7777120, dexamethasone, suplatast tosilate (T helper type 2-cytokine inhibitor), and anti-thymic stromal lymphopoietin antibody. These results suggest that (i) thymic stromal lymphopoietin, IL-1, and T and/or natural killer cells are important in establishing and augmenting CHS to HQ and (ii) inflammatory chemicals may promote CHS to HQ as adjuvants.
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Kurohane K, Sekiguchi K, Ogawa E, Tsutsumi M, Imai Y. Dibutyl Phthalate Rather than Monobutyl Phthalate Facilitates Contact Hypersensitivity to Fluorescein Isothiocyanate in a Mouse Model. Biol Pharm Bull 2017; 40:2010-2013. [DOI: 10.1248/bpb.b17-00557] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Kota Sekiguchi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Erina Ogawa
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Masato Tsutsumi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
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17
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Matsuoka T, Kurohane K, Suzuki W, Ogawa E, Kobayashi K, Imai Y. Dibutyl Maleate and Dibutyl Fumarate Enhance Contact Sensitization to Fluorescein Isothiocyanate in Mice. Biol Pharm Bull 2016; 39:272-7. [DOI: 10.1248/bpb.b15-00683] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takeshi Matsuoka
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Wakana Suzuki
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Erina Ogawa
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Kamiyu Kobayashi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasuyuki Imai
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
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Lourenço A, Galbiati V, Corti D, Papale A, Martino-Andrade A, Corsini E. The plasticizer dibutyl phthalate (DBP) potentiates chemical allergen-induced THP-1 activation. Toxicol In Vitro 2015; 29:2001-8. [DOI: 10.1016/j.tiv.2015.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 08/11/2015] [Accepted: 08/13/2015] [Indexed: 10/23/2022]
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Kobayashi C, Kurohane K, Imai Y. Lack of Impact of High Dietary Vitamin A on T Helper 2-Dependent Contact Hypersensitivity to Fluorescein Isothiocyanate in Mice. Biol Pharm Bull 2015; 38:1827-30. [PMID: 26299258 DOI: 10.1248/bpb.b15-00534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Overuse of vitamin A as a dietary supplement is a concern in industrialized countries. High-level dietary vitamin A is thought to shift immunity to a T helper 2 (Th2)-dominant one, resulting in the promotion of allergies. We have been studying a fluorescein isothiocyanate (FITC)-induced contact hypersensitivity (CHS) mouse model that involves Th2-type immunity. We fed a diet with a high retinyl palmitate content (250 international units (IU)/g diet) or a control diet (4 IU/g diet) to BALB/c mice for three weeks. No augmentation of FITC-induced CHS was found in mice fed the diet with a high vitamin A content, although accumulation of the vitamin was confirmed in the livers of these animals. The results indicated that relatively short-term feeding of the high-level vitamin A diet did not influence the Th2-driven response at a stage with significant retinol accumulation in the liver. The results were in contrast to the high-dose pyridoxine diets that produced a reduced response in FITC-induced CHS.
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Affiliation(s)
- Chie Kobayashi
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
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20
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Kurohane K, Kimura A, Terasawa R, Sahara Y, Kobayashi K, Suzuki W, Matsuoka T, Watanabe T, Imai Y. Adjuvant Effect of an Alternative Plasticizer, Diisopropyl Adipate, on a Contact Hypersensitivity Mouse Model: Link with Sensory Ion Channel TRPA1 Activation. Biol Pharm Bull 2015; 38:1054-62. [PMID: 25959058 DOI: 10.1248/bpb.b15-00199] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Due to health concerns about phthalate esters, the use of alternative plasticizers is being considered. Phthalate esters enhance skin sensitization to fluorescein isothiocyanate (FITC) in mouse models. We have demonstrated that phthalate esters stimulate transient receptor potential ankyrin 1 (TRPA1) cation channels expressed on sensory neurons. We also found a correlation between TRPA1 activation and the enhancing effect on FITC-induced contact hypersensitivity (CHS) when testing various types of phthalate esters. Here we investigated the effects of an alternative plasticizer, diisopropyl adipate (DIA). Activation of TRPA1 by DIA was demonstrated by calcium mobilization using Chinese hamster ovary cells expressing TRPA1 in vitro. The effect of DIA was inhibited by a TRPA1-specific antagonist, HC-030031. The presence of DIA or dibutyl phthalate (DBP; positive control) during skin sensitization of BALB/c mice to FITC augmented the CHS response, as revealed by the level of ear-swelling. The enhancing effect of DIA was inhibited by in vivo pretreatment with HC-030031. FITC-presenting CD11c(+) dendritic cell (DC)-trafficking to draining lymph nodes was facilitated both by DIA and by DBP. DBP and DIA were similarly active in the enhancement of interferon-γ production by draining lymph nodes, but the effect on interleukin-4 production was weaker with DIA. Overall, DIA activated TRPA1 and enhanced FITC-induced CHS, as DBP did. The adjuvant effects of adipate esters may need to be considered because they are used as ingredients in cosmetics and drug formulations topically applied to the skin.
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Affiliation(s)
- Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka
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21
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Zhou J, Chen B, Cai Z. Metabolomics-based approach for assessing the toxicity mechanisms of dibutyl phthalate to abalone (Haliotis diversicolor supertexta). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:5092-5099. [PMID: 25416503 DOI: 10.1007/s11356-014-3859-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 11/12/2014] [Indexed: 06/04/2023]
Abstract
Dibutyl phthalate (DBP) is a ubiquitous contaminant in the marine environment, and relatively little is known about the toxicological mechanisms of this compound at the metabolite level. In this study, marine gastropods (abalone) were exposed to DBP at environmentally relevant concentrations (2, 10, and 50 μg/L) for 30 days. The plasma metabolite profiles were determined at the 5th, 15th, and 30th. The major metabolite changes corresponding to DBP exposure were related to osmotic regulation, energy metabolism, and environmental stress, and the effects displayed a dose-dependent pattern. The most obvious change was the increase in the levels of intracellular metabolites (betaine, dimethylglycine, homarine, glutamine, and lactate) and tricarboxylic acid cycle intermediates. The results revealed that DBP may lead to abalone oxidative stress, lipid metabolism dysfunction, energy metabolism disturbance, and osmoregulation imbalance. These results would be helpful in better understanding the mechanisms of abalone response to DBP stress at the system level.
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Affiliation(s)
- Jin Zhou
- The Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua University, Room 304, Building L, Shenzhen University Town, Xili, Shenzhen City, 518055, People's Republic of China
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22
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Ochiai S, Roediger B, Abtin A, Shklovskaya E, Fazekas de St. Groth B, Yamane H, Weninger W, Le Gros G, Ronchese F. CD326loCD103loCD11blo Dermal Dendritic Cells Are Activated by Thymic Stromal Lymphopoietin during Contact Sensitization in Mice. THE JOURNAL OF IMMUNOLOGY 2014; 193:2504-11. [DOI: 10.4049/jimmunol.1400536] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Li J, Li L, Zuo H, Ke C, Yan B, Wen H, Zhang Y, Yang X. T-helper type-2 contact hypersensitivity of Balb/c mice aggravated by dibutyl phthalate via long-term dermal exposure. PLoS One 2014; 9:e87887. [PMID: 24498391 PMCID: PMC3912153 DOI: 10.1371/journal.pone.0087887] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 01/06/2014] [Indexed: 11/28/2022] Open
Abstract
Objective During the last few decades, the prevalence of allergic skin diseases, asthma and rhinitis, has increased worldwide. Introduction of environmental chemicals with aggravation effects may play a part in this increase. The artificial chemical product dibutyl phthalate (DBP) is used in many products used in daily life. Dermal exposure to DBP is a common (but easily neglected) exposure pattern. Methodology/Principal Findings In this study, we examined the aggravation effect of long-term dermal exposure to DBP in a T-helper type 2 (Th2) model of contact hypersensitivity (CHS) in mice, and sought the potential molecular mechanisms. Experimental tests were conducted after 40-day dermal exposure to saline or three concentrations of DBP and subsequent three times of sensitization with 0.5% fluorescein isothiocyanate (FITC) or vehicle. The results of immunological and inflammatory biomarkers (total-immunoglobulin (Ig)E and Th cytokines) as well as histopathological examination and measurement of ear swelling supported the notion that high doses of DBP may promote and aggravate atopic dermatitis. Increased expression of thymic stromal lymphopoietin (TSLP) in this mouse model suggested that TSLP might be one of the molecular mechanisms of the aggravation effect induced by DBP. Conclusions/Significance Together, these results indicated that long-term dermal exposure to types of environmental toxins such as phthalates may endow an atopic predisposition in animals or humans. In addition, the high expression of TSLP in the mouse model demonstrated that TSLP might have an important role in the aggravation effect. This result could help to provide effective prevention strategies against atopic diseases such as atopic dermatitis (AD).
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Affiliation(s)
- Jinquan Li
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Li Li
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Haoxiao Zuo
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Chenjuan Ke
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Biao Yan
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Huaxiao Wen
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Yinping Zhang
- Department of Building Science, Tsinghua University, Beijing, China
| | - Xu Yang
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
- * E-mail:
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24
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Li L, Li HS, Song NN, Chen HM. The immunotoxicity of dibutyl phthalate on the macrophages in mice. Immunopharmacol Immunotoxicol 2014; 35:272-81. [PMID: 23480346 DOI: 10.3109/08923973.2013.768267] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Dibutyl phthalate (DBP), a widely used phthalate chemical, is commonly used as plasticizer. It is well known that DBP causes reproductive and developmental diseases, but the effect of DBP on the immune system remains to be determined. We assessed the effect of DBP on immune functions of murine macrophages, which constitute a key component in the immune response. MATERIALS AND METHODS Murine peritoneal exudate macrophages (PEMs) were treated with 0, 1, 5, 10, 50 or 100 μM DBP in vitro for 24 h and then the viability of PEMs were measured by flow cytometry (FCM) and trypan blue count. To investigate the effect of DBP on the functions of PEMs, we treated the PEMs with moderate dose of DBP (0, 1, 5 or 10 μM) in vitro for 24 h. The phenotypes, phagocytosis and cytokine production of PEMs were measured by FCM or real-time PCR. The immunogenicity and antigen presenting capacity of PEMs treated with DBP in vitro were assessed both by the mixed lymphocytereaction (MLR) in vitro assay and through the injection of exposed cells in mice by the delayed-type hypersensitivity (DTH) assay. RESULTS High dose of DBP (50-100 μM) showed cytotoxicity on PEMs, whereas after the treatment with moderate dose of DBP (1-10 μM) in vitro, PEMs expressed low level of CD36, CD80 and MHC-II molecules, and showed significantly decreased phagocytosis on apoptotic cells and Escherichia coli. In addition, DBP treatment exhibited a decrease in the cytokine production, immunogenicity and antigen-presenting capacity of PEMs. CONCLUSIONS The present study shows the effects of DBP on macrophages, demonstrating immunogenicity and decreased antigen presentation in vitro.
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Affiliation(s)
- Lei Li
- Research Center for Import-Export Chemicals Safety of General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Chinese Academy of Inspection and Quarantine, Beijing, China
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Bognar P, Nemeth I, Mayer B, Haluszka D, Wikonkal N, Ostorhazi E, John S, Paulsson M, Smyth N, Pasztoi M, Buzas EI, Szipocs R, Kolonics A, Temesvari E, Karpati S. Reduced inflammatory threshold indicates skin barrier defect in transglutaminase 3 knockout mice. J Invest Dermatol 2013; 134:105-111. [PMID: 23884312 DOI: 10.1038/jid.2013.307] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 04/24/2013] [Accepted: 05/16/2013] [Indexed: 11/09/2022]
Abstract
Recently, a transglutaminase 3 knockout (TGM3/KO) mouse was generated that showed impaired hair development, but no gross defects in the epidermal barrier, although increased fragility of isolated corneocytes was demonstrated. Here we investigated the functionality of skin barrier in vivo by percutaneous sensitization to FITC in TGM3/KO (n=64) and C57BL/6 wild-type (WT) mice (n=36). Cutaneous inflammation was evaluated by mouse ear swelling test (MEST), histology, serum IgE levels, and by flow cytometry from draining lymph nodes. Inflammation-induced significant MEST difference (P<0.0001) was detected between KO and WT mice and was supported also by histopathology. A significant increase of CD4+ CD25+-activated T cells (P<0.01) and elevated serum IgE levels (P<0.05) in KO mice indicated more the development of FITC sensitization than an irritative reaction. Propionibacter acnes-induced intracutaneous inflammation showed no difference (P=0.2254) between the reactivity of WT and KO immune system. As in vivo tracer, FITC penetration from skin surface followed by two-photon microscopy demonstrated a more invasive percutaneous penetration in KO mice. The clinically uninvolved skin in TGM3/KO mice showed impaired barrier function and higher susceptibility to FITC sensitization indicating that TGM3 has a significant contribution to the functionally intact cutaneous barrier.
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Affiliation(s)
- Peter Bognar
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Ilona Nemeth
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Balazs Mayer
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Dora Haluszka
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Norbert Wikonkal
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Eszter Ostorhazi
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Susan John
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
| | - Mats Paulsson
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
| | - Neil Smyth
- Centre for Biosciences, University of Southampton, Southampton, UK
| | - Maria Pasztoi
- Department of Genetics, Cell- and Immune Biology, Semmelweis University, Budapest, Hungary
| | - Edit I Buzas
- Department of Genetics, Cell- and Immune Biology, Semmelweis University, Budapest, Hungary
| | - Robert Szipocs
- Institute for Solid State Physics and Optics, Wigner RCP, Laser Applications, Budapest, Hungary
| | - Attila Kolonics
- Institute for Solid State Physics and Optics, Wigner RCP, Laser Applications, Budapest, Hungary
| | - Erzsebet Temesvari
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary
| | - Sarolta Karpati
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary.
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Kurohane K, Sahara Y, Kimura A, Narukawa M, Watanabe T, Daimon T, Imai Y. Lack of transient receptor potential melastatin 8 activation by phthalate esters that enhance contact hypersensitivity in mice. Toxicol Lett 2013; 217:192-6. [PMID: 23296101 DOI: 10.1016/j.toxlet.2012.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 12/21/2012] [Accepted: 12/27/2012] [Indexed: 10/27/2022]
Abstract
We studied the involvement of sensory neurons in skin sensitization to allergens using a mouse model in which the T-helper type 2 response is essential. Skin sensitization to fluorescein isothiocyanate (FITC) has been shown to be enhanced by several phthalate esters, including dibutyl phthalate (DBP). For different types of phthalate esters, we found a correlation between the ability of transient receptor potential (TRP) A1 activation and that of enhancing skin sensitization. A TRPA1-specific antagonist, HC-030031, was shown to suppress skin sensitization in the presence of DBP. However, since phthalate esters also activate TRPV1, phthalate esters could activate other types of TRP channels non-selectively. Furthermore, sensitization to FITC is also enhanced by menthol, which activates TRPA1 and TRPM8. Here we established an in vitro system for measuring TRPM8 activation. The selectivity for TRPM8 was established by the fact that two TRPM8 agonists (menthol and icilin) induced calcium mobilization, whereas agonists of TRPA1 and TRPV1 did not. We demonstrated that phthalate esters do not activate TRPM8. TRPA1-antagonist HC-030031 did not inhibit TRPM8 activation induced by menthol or icilin. These results show that phthalate esters activate TRPA1 and TRPV1 with selectivity. TRPM8 activation is not likely to be involved in the sensitization to FITC.
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Affiliation(s)
- Kohta Kurohane
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City, Shizuoka 422-8526, Japan
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Shiba T, Tamai T, Sahara Y, Kurohane K, Watanabe T, Imai Y. Transient receptor potential ankyrin 1 activation enhances hapten sensitization in a T-helper type 2-driven fluorescein isothiocyanate-induced contact hypersensitivity mouse model. Toxicol Appl Pharmacol 2012; 264:370-6. [DOI: 10.1016/j.taap.2012.08.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 07/26/2012] [Accepted: 08/14/2012] [Indexed: 10/28/2022]
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Simonsson C, Stenfeldt AL, Karlberg AT, Ericson MB, Jonsson CA. The pilosebaceous unit—a phthalate-induced pathway to skin sensitization. Toxicol Appl Pharmacol 2012; 264:114-20. [DOI: 10.1016/j.taap.2012.07.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 06/20/2012] [Accepted: 07/19/2012] [Indexed: 11/25/2022]
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Kobayashi C, Kurohane K, Imai Y. High dose dietary pyridoxine induces T-helper type 1 polarization and decreases contact hypersensitivity response to fluorescein isothiocyanate in mice. Biol Pharm Bull 2012; 35:532-8. [PMID: 22466557 DOI: 10.1248/bpb.35.532] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pyridoxine (vitamin B(6)) is commonly used as a dietary supplement and beneficial effects of it are expected. However, excess ingestion of pyridoxine has been shown to cause a severe sensory neuropathy in humans and experimental animals. We have been studying the linkage between the nervous and immune systems using a fluorescein isothiocyanate (FITC)-induced contact hypersensitivity (CHS) mouse model. We have found that activation of transient receptor potential ankyrin 1 (TRPA1), which is expressed on sensory neurons, enhances skin sensitization to FITC. Another feature of FITC-induced CHS is its dependence on T helper 2 (Th2) type responses. We hypothesized that the excess intake of pyridoxine may affect sensitization to FITC and influence helper T-cell polarization. We examined FITC-induced CHS in BALB/c mice fed a diet containing excess pyridoxine (120 mg/kg diet) for 3 weeks. We found that mice fed on the excess-pyridoxine diet exhibited a lower response as to FITC-induced CHS compared with ones fed on a diet with a standard pyridoxine content (6.0 mg/kg diet). Moreover, the interferon (IFN)-γ/interleukin (IL)-4 ratio produced by draining lymph node cells was significantly higher with the excess-pyridoxine diet. This suggested that the cytokine balance was shifted toward Th1 with the excess-pyridoxine diet. Consistently, Th1-dependent oxazolone-induced CHS was enhanced with the excess-pyridoxine diet. These results suggested that an excess pyridoxine intake actively influences the immune system by altering helper T cell polarization.
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Affiliation(s)
- Chie Kobayashi
- Laboratory of Microbiology and Immunology and the Global COE Program, University of Shizuoka School of Pharmaceutical Sciences, Japan
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Hsu NY, Wu JY, Liu X, Yen Y, Chen CY, Chou MC, Lin CH, Lee H, Cheng YW. Expression status of ribonucleotide reductase small subunits hRRM2/p53R2 as prognostic biomarkers in stage I and II non-small cell lung cancer. Anticancer Res 2011; 22:186-99. [PMID: 21965764 DOI: 10.1111/j.1600-0668.2011.00753.x] [Citation(s) in RCA: 158] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Overexpression of ribonucleotide reductase M2 (hRRM2) and p53-dependent RR small subunit (p53R2) has been correlated with tumor malignancy and progression in several types of cancer. The aim of this study was to determine the association of p53R2/hRRM2 expression with clinicopathological characteristics of stage I and II non-small cell lung cancer (NSCLC). Immunohistochemistry was conducted on a tissue array that included 92 samples. Correlations between hRRM2 and p53R2 expression and clinicopathological factors, recurrence/metastasis, and outcomes were analyzed. The analyses revealed that there was no correlation between p53R2 expression and clinicopathological factors; hRRM2 was only positively related to poor tumor differentiation (p=0.006). Regarding overall survival during the follow-up period, patients with p53R2+/hRRM2- tumors had the best outcomes (p<0.01). Multivariant Cox analysis revealed that p53R2 (risk=0.232, 95% CI=0.086-0.626, p=0.004) not only served as a prognostic biomarker to predict survival, but also as an independent biomarker to predict disease-free survival (risk=0.545, 95% CI=0.301-0.987, p=0.045) of patients with NSCLC. Therefore, we consider that the expression of p53R2 can be used not only as a biomarker for overall survival, but also as an indicator for tumor recurrence. Based on our finding, p53R2 expression seems more important than that of hRRM2 in prognosis of early-stage lung cancer.
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Affiliation(s)
- Nan-Yung Hsu
- Institute of Medicine, Chung Shan Medical University, No. 110. Sec. 1, Jianguo N. Rd., Taichung 4020, Taiwan, R.O.C
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Zhou J, Zhu XS, Cai ZH. Influences of DMP on the fertilization process and subsequent embryogenesis of abalone (Haliotis diversicolor supertexta) by gametes exposure. PLoS One 2011; 6:e25951. [PMID: 22028799 PMCID: PMC3197592 DOI: 10.1371/journal.pone.0025951] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Accepted: 09/14/2011] [Indexed: 12/21/2022] Open
Abstract
Di-methyl phthalate (DMP), a typical endocrine disrupting chemical (EDC), is ubiquitously distributed in aquatic environments; yet studies regarding its impact on gametes and the resulting effects on embryogenesis in marine gastropods are relatively scarce. In this study, the influences of DMP on the gametes and subsequent developmental process of abalone (Haliotis diversicolor supertexta, a representative marine benthic gastropod) were assessed. Newborn abalone eggs and sperm were exposed separately to different DMP concentrations (1, 10 or 100 ppb) for 60 min. At the end-point of exposure, the DMP-treated eggs and sperm were collected for analysis of their ultra-structures, ATPase activities and total lipid levels, and the fertilized gametes (embryos) were collected to monitor related reproductive parameters (fertilization rate, abnormal development rate and hatching success rate). Treatment with DMP did not significantly alter the structure or total lipid content of eggs at any of the doses tested. Hatching failures and morphological abnormalities were only observed with the highest dose of DMP (100 ppb). However, DMP exposure did suppress sperm ATPase activities and affect the morphological character of their mitochondria. DMP-treated sperm exhibited dose-dependent decreases in fertilization efficiency, morphogenesis and hatchability. Relatively obvious toxicological effects were observed when both sperm and eggs were exposed to DMP. Furthermore, RT-PCR results indicate that treatment of gametes with DMP changed the expression patterns of physiologically-regulated genes (cyp3a, 17β-HSD-11 and 17β-HSD-12) in subsequent embryogenesis. Taken together, this study proofed that pre-fertilization exposure of abalone eggs, sperm or both to DMP adversely affects the fertilization process and subsequent embryogenesis.
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Affiliation(s)
- Jin Zhou
- Ocean Science and Technology Division, Graduate School at Shenzhen, Tsinghua University, Shenzhen, People's Republic of China
| | - Xiao-Shan Zhu
- Ocean Science and Technology Division, Graduate School at Shenzhen, Tsinghua University, Shenzhen, People's Republic of China
| | - Zhong-Hua Cai
- Ocean Science and Technology Division, Graduate School at Shenzhen, Tsinghua University, Shenzhen, People's Republic of China
- * E-mail:
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Oyoshi MK, Larson RP, Ziegler SF, Geha RS. Mechanical injury polarizes skin dendritic cells to elicit a T(H)2 response by inducing cutaneous thymic stromal lymphopoietin expression. J Allergy Clin Immunol 2010; 126:976-84, 984.e1-5. [PMID: 21050944 PMCID: PMC3085022 DOI: 10.1016/j.jaci.2010.08.041] [Citation(s) in RCA: 219] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 08/10/2010] [Accepted: 08/17/2010] [Indexed: 12/11/2022]
Abstract
BACKGROUND Atopic dermatitis is characterized by scratching and by T(H)2-dominated immune response to cutaneously introduced antigens. Antigen application to skin mechanically injured by tape stripping results in T(H)2-dominated skin inflammation. OBJECTIVE To examine the effect of tape stripping on the capacity of skin dendritic cells (DCs) to polarize T cells toward a T(H)2 phenotype. METHODS CD11c(+) DCs were isolated from skin of BALB/c or C57BL/6 mice. Fluorescein isothiocyanate (FITC)(+) and FITC(-) DCs were isolated from draining lymph nodes (DLNs) 24 hours after painting the skin with FITC. DCs were assessed for their ability to induce cytokine secretion by ovalbumin-stimulated naive CD4(+) T cells from T cell receptor-ovalbumin transgenic DO11.10 mice. Cytokine mRNA levels were examined by quantitative PCR. RESULTS Dendritic cells isolated from the skin of wild-type, but not thymic stromal lymphopoietin (TSLP) receptor(-/-) or IL-10(-/-), mice 6 hours after tape stripping elicited significantly more IL-4 and IL-13 and significantly less IFN-γ production by CD4(+) cells than DCs isolated from unmanipulated skin, and expressed significantly more mRNA for the T(H)2 skewing molecules IL-10, Jagged1, and Jagged2, but significantly less mRNA for the T(H)1 skewing cytokine IL-12. CD11c(+)FITC(+) cells isolated from DLNs of shaved and tape stripped skin of wild-type, but not TSLP receptor(-/-) or IL-10(-/-), mice polarized T cells significantly more toward T(H)2 and expressed significantly more IL-10, Jagged1, and Jagged2 mRNA than CD11c(+)FITC(+) cells isolated from DLNs of shaved skin. Tape stripping significantly increased TSLP levels in the skin, and TSLP was shown to play an essential role in the T(H)2 polarization of skin DCs by tape stripping. CONCLUSIONS Tape stripping upregulates TSLP levels in the skin, which polarizes skin DCs to elicit a T(H)2 response via the induction of IL-10.
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Affiliation(s)
- Michiko K. Oyoshi
- Division of Immunology, Children’s Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Ryan P. Larson
- Department of Immunology, University of Washington School of Medicine, Seattle, WA 98185
- Immunology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA 98101
| | - Steven F. Ziegler
- Department of Immunology, University of Washington School of Medicine, Seattle, WA 98185
- Immunology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA 98101
| | - Raif S. Geha
- Division of Immunology, Children’s Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115
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Phthalate esters reveal skin-sensitizing activity of phenethyl isothiocyanate in mice. Food Chem Toxicol 2010; 48:1704-8. [DOI: 10.1016/j.fct.2010.03.049] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 03/24/2010] [Accepted: 03/30/2010] [Indexed: 11/22/2022]
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Larson RP, Zimmerli SC, Comeau MR, Itano A, Omori M, Iseki M, Hauser C, Ziegler SF. Dibutyl phthalate-induced thymic stromal lymphopoietin is required for Th2 contact hypersensitivity responses. THE JOURNAL OF IMMUNOLOGY 2010; 184:2974-84. [PMID: 20173025 DOI: 10.4049/jimmunol.0803478] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Thymic stromal lymphopoietin (TSLP) is an IL-7-related cytokine, produced by epithelial cells, that has been linked to atopic dermatitis and asthma; however, it remains unclear how TSLP shapes the adaptive immune response that causes these allergic disorders. In this study, we demonstrate a role for TSLP in a Th2 model of contact hypersensitivity in mice. TSLP is required for the development of Th2-type contact hypersensitivity induced by the hapten FITC in combination with the sensitizing agent dibutyl phthalate. TSLPR-deficient mice exhibited a dramatically reduced response, including markedly reduced local infiltration by eosinophils, Th2 cytokine production, and serum IgE levels, following FITC sensitization and challenge. The reduced response by TSLPR-deficient mice is likely due to decreased frequency and reduced T cell stimulatory function of skin-derived Ag-bearing FITC(+)CD11c(+) dendritic cells in draining lymph nodes following FITC sensitization. These data suggest that skin-derived dendritic cells are direct or indirect targets of TSLP in the development of type 2 immune responses in the skin, where TSLP drives their maturation, accumulation in skin draining lymph nodes, and ability to induce proliferation of naive allergen-specific T cells.
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Affiliation(s)
- Ryan P Larson
- Department of Immunology, University of Washington, Seattle, WA 98195, USA
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35
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Matsuda T, Kurohane K, Imai Y. Di-(2-ethylhexyl) phthalate enhances skin sensitization to isocyanate haptens in mice. Toxicol Lett 2010; 192:97-100. [DOI: 10.1016/j.toxlet.2009.10.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2009] [Revised: 10/08/2009] [Accepted: 10/09/2009] [Indexed: 11/24/2022]
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36
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Kanazawa A, Kishi R. [Potential risk of indoor semivolatile organic compounds indoors to human health]. Nihon Eiseigaku Zasshi 2009; 64:672-82. [PMID: 19502763 DOI: 10.1265/jjh.64.672] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The concerns on indoor contamination by semivolatile organic compounds (SVOCs) are increasing. Because of the high boiling points in the range of 260-380 degrees C, SVOCs are considered to vaporize poorly under living conditions. However, a wide variety of SVOCs were detected in indoor air and house dust in previous studies. Indeed, we found SVOCs frequently in both air and dusts of residential dwellings in Sapporo city in 2006. Among SVOCs, there are a number of findings indicating that phthalates and pesticides use associated with allergy or bronchial obstruction. The adjuvant effect of phthalates, particularly monoesters, was shown in animal experiments and the association between allergy prevalence and exposure to phthalates or indoor materials containing plasticizers was observed in previous epidemiological studies. Regarding pesticides involving organophosphates and pyrethroids among others, the association of pesticide use with asthma or chronic bronchitis was observed in commercial pesticide applicators or farmers. Because SVOCs were often found in air and house dust of residential dwellings, the risk of SVOC exposure should be assessed in the Japanese general population.
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Affiliation(s)
- Ayako Kanazawa
- Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo 060-8638, Japan.
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37
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Samuelsson K, Simonsson C, Jonsson CA, Westman G, Ericson MB, Karlberg AT. Accumulation of FITC nearstratum corneum-visualizing epidermal distribution of a strong sensitizer using two-photon microscopy. Contact Dermatitis 2009; 61:91-100. [DOI: 10.1111/j.1600-0536.2009.01591.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Dearman RJ, Betts CJ, Beresford L, Bailey L, Caddick HT, Kimber I. Butyl benzyl phthalate: effects on immune responses to ovalbumin in mice. J Appl Toxicol 2009; 29:118-25. [PMID: 18816477 DOI: 10.1002/jat.1388] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
During recent decades the prevalence of IgE-mediated (atopic) allergic diseases in Western Europe and the USA has been increasing dramatically. It has been suggested that one possible cause is the presence in the environment of chemicals that may act as adjuvants, enhancing immune and allergic responses. Certain commonly used phthalate plasticizers such as butyl benzyl phthalate (BBP) have been implicated in this way. In the current experiments, the impact of BBP, applied by a physiologically relevant exposure route, on the vigour of immune responses induced in BALB/c strain mice has been examined. Mice were immunized via subcutaneous injection with the reference allergen ovalbumin (OVA) and received concurrent topical treatment with doses of BBP that induced significant changes in liver weight. The generation of specific anti-OVA IgE and IgG1 antibodies was measured by passive cutaneous anaphylaxis and by enzyme-linked immunosorbant assays, respectively. Topical administration of BBP was without impact on anti-OVA IgE antibody responses, regardless of whether BBP was applied locally or distant to the site of OVA immunization. However, same-site treatment with high-dose BBP (100 mg) did result in a modest elevation in anti-OVA IgG1 antibody production, a subclass of antibody used as a surrogate marker of IgE responses. Taken together with human exposure data, these results suggest that the doses of phthalate encountered in the home environment are unlikely to be a major factor contributing to the increased incidence of asthma and allergy in the developed world.
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Affiliation(s)
- Rebecca Jane Dearman
- Faculty of Life Sciences, University of Manchester, Michael Smith Building, Oxford Road, Manchester M139PT, UK.
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Shigeno T, Katakuse M, Fujita T, Mukoyama Y, Watanabe H. Phthalate ester-induced thymic stromal lymphopoietin mediates allergic dermatitis in mice. Immunology 2009; 128:e849-57. [PMID: 19740346 DOI: 10.1111/j.1365-2567.2009.03094.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Recently air pollutants and irritants have been labelled as possible exogenous risk factors for allergic disorders. Although the underlying causes of allergic disorders such as atopic dermatitis and asthma remain unclear, the T helper type 2 (Th2) cell-mediated allergic inflammatory cascade may contribute to their pathogenesis. In the last decade, it has been documented that one of the candidates for triggering Th2 commitment is thymic stromal lymphopoietin (TSLP), the expression of which is up-regulated in the lesions of allergic patients. Here, we describe TSLP function in a fluorescein isothiocyanate (FITC) -induced contact hypersensitivity (CHS) model. A cytokine profile indicated that the model was dominantly mediated by the Th2 milieu. Interestingly, TSLP was increased in the skin during the sensitization phase when stimulated by a solvent, dibutyl phthalate (DBP), but not by FITC hapten or another solvent, acetone. Ear swelling in FITC-induced CHS was totally abrogated by removing DBP from the sensitization or elicitation phase, and was restored by complementary injection of TSLP. Inversely, the ear swelling was suppressed by injection of small interfering RNA against TSLP during the sensitization phase, which was concomitant with decreasing expression of interleukin-4 at the swollen skin site. Taken together, DBP-induced TSLP during the sensitization phase plays a role in establishing FITC-induced CHS and may be one of the causes of Th2 commitment in the model, suggesting that certain environmental toxins, such as DBP, may endow pro-allergic and atopic predisposition in humans or animals.
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Affiliation(s)
- Tomomi Shigeno
- Drug Discovery Research, Kyoto R&D Centre, Maruho Co., Ltd, Chudoji, Kyoto, Japan
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Shiba T, Maruyama T, Kurohane K, Iwasaki Y, Watanabe T, Imai Y. TRPA1 and TRPV1 activation is a novel adjuvant effect mechanism in contact hypersensitivity. J Neuroimmunol 2009; 207:66-74. [PMID: 19135264 DOI: 10.1016/j.jneuroim.2008.12.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Revised: 12/06/2008] [Accepted: 12/08/2008] [Indexed: 10/21/2022]
Abstract
We have revealed that local stimulation of sensory neurons is involved in the adjuvant effect of dibutyl phthalate (DBP) in a fluorescein isothiocyanate-induced mouse contact hypersensitivity model. Transient receptor potential (TRP) A1 and TRPV1 seemed to be candidate DBP targets. Here we directly demonstrated that DBP activates a subset of neurons in mouse dorsal root ganglia responsive to TRPA1 and TRPV1 agonists. TRPA1 and TRPV1 activation was further demonstrated using cultured cells expressing TRP channels. Among structurally different phthalate esters, there is a positive relationship between the activation of TRPA1- or TRPV1-expressing cells and the adjuvant effect.
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Affiliation(s)
- Takahiro Shiba
- Laboratory of Microbiology and Immunology and the Global COE Program, University of Shizuoka Graduate School of Pharmaceutical Sciences, Shizuoka 422-8526, Japan
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Boehme SA, Franz-Bacon K, Chen EP, Sásik R, Sprague LJ, Ly TW, Hardiman G, Bacon KB. A small molecule CRTH2 antagonist inhibits FITC-induced allergic cutaneous inflammation. Int Immunol 2008; 21:81-93. [PMID: 19066314 DOI: 10.1093/intimm/dxn127] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
A FITC-induced allergic contact hypersensitivity model was used to investigate the role that the prostaglandin D(2) receptor-chemoattractant receptor-homologous molecule expressed on T(h)2 cells (CRTH2) plays in modulating cutaneous inflammation. Our results show that inhibition of CRTH2, achieved via administration of a potent, small molecule antagonist, Compound A (Cmpd A), effectively blocked edema formation and greatly reduced the inflammatory infiltrate and skin pathology observed in drug vehicle-treated animals. Gene expression analysis revealed that Cmpd A administration down-regulated the transcription of a wide range of pro-inflammatory mediators. This correlated with decreases in cytokine and chemokine protein levels, notably IL-4, IL-1beta, tumor necrosis factor-alpha, transforming growth factor-beta, GRO-alpha, MIP-2 and thymic stromal lymphopoietin (TSLP) in FITC-challenged ears. The administration of an anti-TSLP-neutralizing antibody was only partially effective in lowering the FITC-induced inflammatory infiltrate and cytokine production compared with the CRTH2 antagonist. Taken together, these data suggest that blockade of CRTH2 inhibits multiple pathways leading to cutaneous inflammation in this model. This suggests that CRTH2 antagonism may be a viable route for therapeutic intervention in allergic skin diseases, such as atopic dermatitis.
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Affiliation(s)
- Stefen A Boehme
- Actimis Pharmaceuticals, Inc., 10835 Road to the Cure, San Diego, CA 92121, USA.
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Hansen JS, Larsen ST, Nielsen GD. Comment to “Di-(2-ethylhexyl) phthalate is without adjuvant effect in mice on ovalbumin” [Toxicology 244 (2008) 231–241]. Toxicology 2008; 247:162-5. [DOI: 10.1016/j.tox.2008.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Accepted: 02/21/2008] [Indexed: 10/22/2022]
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Di-(2-ethylhexyl) phthalate is without adjuvant effect in mice on ovalbumin. Toxicology 2008; 244:231-41. [DOI: 10.1016/j.tox.2007.11.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Revised: 11/22/2007] [Accepted: 11/23/2007] [Indexed: 01/16/2023]
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Maruyama T, Shiba T, Iizuka H, Matsuda T, Kurohane K, Imai Y. Effects of phthalate esters on dendritic cell subsets and interleukin-4 production in fluorescein isothiocyanate-induced contact hypersensitivity. Microbiol Immunol 2007; 51:321-6. [PMID: 17380052 DOI: 10.1111/j.1348-0421.2007.tb03914.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Phthalate esters with short alkyl chains, such as di-ethyl (DEP), di-n-propyl (DPP), and di-butyl phthalate (DBP), have adjuvant effects on an FITC-induced contact hypersensitivity mouse model. The adjuvant effects of DPP and DBP are associated with enhanced trafficking of FITC-presenting CD11b(+) dendritic cells (DC). DEP has relatively weak activity as to FITC-positive cell migration. Here we demonstrated that DBP and DPP also increased the number of FITC-positive CD8alpha(+) DC in draining lymph nodes. We also found enhanced production of interleukin-4 in draining lymph nodes after FITC sensitization with DEP, DPP, or DBP, suggesting an additional adjuvant mechanism of phthalate esters.
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Affiliation(s)
- Takashi Maruyama
- Laboratory of Microbiology and Immunology and COE Program in the 21st Century, University of Shizuoka School of Pharmaceutical Sciences, Shizuoka, Japan
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Maruyama T, Iizuka H, Tobisawa Y, Shiba T, Matsuda T, Kurohane K, Imai Y. Influence of local treatments with capsaicin or allyl isothiocyanate in the sensitization phase of a fluorescein-isothiocyanate-induced contact sensitivity model. Int Arch Allergy Immunol 2007; 143:144-54. [PMID: 17259732 DOI: 10.1159/000099081] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Accepted: 10/30/2006] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND In fluorescein isothiocyanate (FITC)-induced contact hypersensitivity models, dibutyl phthalate has been empirically used as a solvent ingredient. We have demonstrated that dibutyl phthalate has an adjuvant effect through the facilitation of trafficking FITC-presenting dendritic cells (DC) from the skin to draining lymph nodes. Here we investigated the effects of local pretreatment with substances that are capable of desensitizing sensory neurons in the sensitization phase. METHODS Local pretreatment of BALB/c mice with capsaicin (epicutaneous), allyl isothiocyanate (epicutaneous) or a truncated form of calcitonin gene-related peptide (CGRP(8-37); intradermal) was performed before contact sensitization to FITC. The ear swelling test was employed to monitor sensitization. The appearance of FITC-presenting CD11c-positive cells in the draining lymph nodes was detected by flow cytometry. Cytokine production in local lymph node cell cultures was determined by ELISA. RESULTS The ear swelling response was reduced in mice pretreated with capsaicin or allyl isothiocyanate. DC trafficking and maturation (based on the levels of co-stimulators CD80 and CD86) were inhibited. Interleukin-4 production by local lymph nodes was suppressed with allyl isothiocyanate but not with capsaicin. Pretreatment with CGRP(8-37) suppressed sensitization to FITC. CONCLUSIONS Local pretreatment with substances that are capable of desensitizing sensory neurons through the respective transient receptor potential channels suppressed skin sensitization to FITC in a mouse model. This was associated with reduced trafficking and maturation of FITC-presenting DC. A CGRP antagonist also suppressed the sensitization to FITC, suggesting the possible involvement of sensory neurons in sensitization.
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Affiliation(s)
- Takashi Maruyama
- Laboratory of Microbiology and Immunology and COE Program for the 21st Century, University of Shizuoka School of Pharmaceutical Sciences, Shizuoka, Japan
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