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HMGB1-mediated chromatin remodeling attenuates Il24 gene expression for the protection from allergic contact dermatitis. Proc Natl Acad Sci U S A 2021; 118:2022343118. [PMID: 33443188 DOI: 10.1073/pnas.2022343118] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Dysregulation of inflammatory cytokines in keratinocytes promote the pathogenesis of the skin inflammation, such as allergic contact dermatitis (ACD). High-mobility group box 1 protein (HMGB1) has been implicated in the promotion of skin inflammation upon its extracellular release as a damage-associated molecular pattern molecule. However, whether and how HMGB1 in keratinocytes contributes to ACD and other skin disorders remain elusive. In this study, we generated conditional knockout mice in which the Hmgb1 gene is specifically deleted in keratinocytes, and examined its role in ACD models. Interestingly, the mutant mice showed exacerbated skin inflammation, accompanied by increased ear thickening in 2,4-dinitrofluorobenezene-induced ACDs. The mRNA expression of interleukin-24 (IL-24), a cytokine known to critically contribute to ACD pathogenesis, was elevated in skin lesions of the mutant mice. As with constitutively expressed, IL-4-induced Il24 mRNA, expression was also augmented in the Hmgb1-deficient keratinocytes, which would account for the exacerbation of ACD in the mutant mice. Mechanistically, we observed an increased binding of trimethyl histone H3 (lys4) (H3K4me3), a hallmark of transcriptionally active genes, to the promoter region of the Il24 gene in the hmgb1-deficient cells. Thus, the nuclear HMGB1 is a critical "gate keeper" in that the dermal homeostasis is contingent to its function in chromatin remodeling. Our study revealed a facet of nuclear HMGB1, namely its antiinflammatory function in keratinocytes for the skin homeostasis.
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Voss M, Kotrba J, Gaffal E, Katsoulis-Dimitriou K, Dudeck A. Mast Cells in the Skin: Defenders of Integrity or Offenders in Inflammation? Int J Mol Sci 2021; 22:ijms22094589. [PMID: 33925601 PMCID: PMC8123885 DOI: 10.3390/ijms22094589] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/23/2021] [Accepted: 04/25/2021] [Indexed: 12/13/2022] Open
Abstract
Mast cells (MCs) are best-known as key effector cells of immediate-type allergic reactions that may even culminate in life-threatening anaphylactic shock syndromes. However, strategically positioned at the host–environment interfaces and equipped with a plethora of receptors, MCs also play an important role in the first-line defense against pathogens. Their main characteristic, the huge amount of preformed proinflammatory mediators embedded in secretory granules, allows for a rapid response and initiation of further immune effector cell recruitment. The same mechanism, however, may account for detrimental overshooting responses. MCs are not only detrimental in MC-driven diseases but also responsible for disease exacerbation in other inflammatory disorders. Focusing on the skin as the largest immune organ, we herein review both beneficial and detrimental functions of skin MCs, from skin barrier integrity via host defense mechanisms to MC-driven inflammatory skin disorders. Moreover, we emphasize the importance of IgE-independent pathways of MC activation and their role in sustained chronic skin inflammation and disease exacerbation.
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Affiliation(s)
- Martin Voss
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-Von-Guericke-University Magdeburg, 39120 Magdeburg, Germany; (M.V.); (J.K.); (K.K.-D.)
| | - Johanna Kotrba
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-Von-Guericke-University Magdeburg, 39120 Magdeburg, Germany; (M.V.); (J.K.); (K.K.-D.)
| | - Evelyn Gaffal
- Laboratory for Experimental Dermatology, Department of Dermatology, University Hospital Magdeburg, 39120 Magdeburg, Germany;
| | - Konstantinos Katsoulis-Dimitriou
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-Von-Guericke-University Magdeburg, 39120 Magdeburg, Germany; (M.V.); (J.K.); (K.K.-D.)
| | - Anne Dudeck
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-Von-Guericke-University Magdeburg, 39120 Magdeburg, Germany; (M.V.); (J.K.); (K.K.-D.)
- Health Campus Immunology, Infectiology and Inflammation, Otto-Von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
- Correspondence:
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Ochiai T, Sasaki Y, Kuwata H, Nakatani Y, Yokoyama C, Hara S. Coordinated action of microsomal prostaglandin E synthase-1 and prostacyclin synthase on contact hypersensitivity. Biochem Biophys Res Commun 2021; 546:124-129. [PMID: 33582554 DOI: 10.1016/j.bbrc.2021.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 02/01/2021] [Indexed: 12/18/2022]
Abstract
Microsomal prostaglandin (PG) E synthase-1 (mPGES-1) and prostacyclin (PGI2) synthase (PGIS) are PG terminal synthases that work downstream of cyclooxygenase and synthesize PGE2 and PGI2, respectively. Although the involvement of PG receptors in acquired cutaneous immune responses was recently shown, the roles of these PG terminal synthases remain unclear. To identify the pathophysiological roles of mPGES-1 and PGIS in cutaneous immune systems, we applied contact hypersensitivity (CHS) to mPGES-1 and PGIS knockout (KO) mice as a model of acquired immune responses. Mice were treated with 1-fluoro-2,4-dinitrobenzene (DNFB) and evaluated for ear thickness and histopathological features. The results showed that the severity of ear swelling in both gene-deficient mice was much lower than that in wild-type (WT) mice. Histological examination of DNFB-treated ears showed that inflammatory cell infiltration and edema in the dermis were also less apparent in both genotypic mice. LC-MS analysis further showed that the increment in PGE2 levels in DNFB-treated ear tissue was reduced in mPGES-1 KO mice, and that 6-keto PGF1α (a stable metabolite of PGI2) was not detected in PGIS KO mice. Furthermore, we made bone marrow (BM) chimera and found that transplantation of WT mouse-derived BM cells restored the impaired CHS response in mPGES-1 KO mice but did not restore the response in PGIS KO mice. These results indicated that mPGES-1 in BM-derived cells and PGIS in non-BM-derived cells might play critical roles in DNFB-induced CHS. mPGES-1-derived PGE2 and PGIS-derived PGI2 might coordinately promote acquired cutaneous immune responses.
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Affiliation(s)
- Tsubasa Ochiai
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | - Yuka Sasaki
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | - Hiroshi Kuwata
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | - Yoshihito Nakatani
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan
| | | | - Shuntaro Hara
- Division of Health Chemistry, Department of Healthcare and Regulatory Sciences, School of Pharmacy, Showa University, Tokyo, Japan.
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Ribeiro WR, Queiroz AG, Mendes E, Casaro MB, Nascimento CM, Coelho LSSF, Martins FS, Leite-Silva VR, Ferreira CM. Preventive oral supplementation with Bifidobacterium longum 5 1A alleviates oxazolone-induced allergic contact dermatitis-like skin inflammation in mice. Benef Microbes 2021; 12:199-209. [PMID: 33573507 DOI: 10.3920/bm2020.0134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Allergic contact dermatitis (ACD) is a common allergic skin disease that affects individuals subjected to different antigen exposure conditions and significantly impacts the quality of life of those affected. Numerous studies have demonstrated that probiotics suppress inflammation through immunomodulatory effects. In this study, we aimed to evaluate the effect of the probiotic Bifidobacterium longum 51A as a preventive treatment for ACD using an oxazolone-induced murine model. We demonstrated that B. longum 51A exerted a prophylactic effect on oxazolone-induced ACD-like skin inflammation via reductions in ear and dermal thickness and leucocyte infiltration. The administration of inactivated B. longum 51A did not affect oxazolone-induced ACD-like skin inflammation, suggesting that the bacteria must be alive to be effective. Given that B. longum 51A is an acetate producer, we treated mice with acetate intraperitoneally, which also prevented ear and dermal thickening. Moreover, the tissue levels of the inflammatory cytokines and chemokines interleukin (IL)-10, IL-33, tumour necrosis factor-α, chemokine (C-C motif) ligand 2/monocyte chemoattractant protein-1 and chemokine (C-C motif) ligand 5/RANTES were significantly reduced after probiotic treatment, but only IL-33 and IL-10 were reduced when the mice were treated with acetate. These results show that B. longum 51A exerted a potential prophylactic effect on skin inflammation and that acetate represents one potential mechanism. However, other factors are likely involved since these two treatments do not yield the same results.
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Affiliation(s)
- W R Ribeiro
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - A G Queiroz
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - E Mendes
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - M B Casaro
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - C M Nascimento
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - L S S F Coelho
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
| | - F S Martins
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Presidente Antônio Carlos 6627, Campus Pampulha UFMG Belo Horizonte, MG 31970201, Brazil
| | - V R Leite-Silva
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil.,Therapeutics Research Centre, Translational Research Institute, Diamantina Institute, University of Queensland, 37 Kent St, Woolloongabba, QLD 4102, Australia
| | - C M Ferreira
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, R. São Nicolau, 210, Diadema, SP 09913-030, Brazil
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Bormann JL, Maibach HI. Draize human repeat insult patch test (HRIPT): Seven decades of pitfalls and progress. Regul Toxicol Pharmacol 2021; 121:104867. [PMID: 33460686 DOI: 10.1016/j.yrtph.2021.104867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/29/2020] [Accepted: 01/11/2021] [Indexed: 11/29/2022]
Abstract
Allergic contact dermatitis, a Type IV delayed hypersensitivity reaction, can result in dermatologic signs/symptoms for patients/workers. The likelihood of this phenomenon has been estimated/predicted for numerous chemicals/drugs by animal model and human patch testing protocols developed over the last century. Karl Landsteiner initiated testing with guinea pig studies; further studies based on his initial concept were in continual development. John Draize extended Landsteiner's guinea pig studies (which led to development of blood transfusions) to a human assay documenting irritant and allergic contact dermatitis potential - for drugs, chemicals, mixtures and products. We performed a literature search of major Draize derived protocols of the human repeat insult patch test (HRIPT). Our results reveal minor and major differences between protocols and lack of international standardization. Key clarification and principles post-Draize modified and improved usefulness of the HRIPT. Without a standard method of performing the HRIPT, it is problematic to generalize results of studies summarized here. Furthermore, we suggest a potential standardization procedure/protocol combining the work of the most satisfactory HRIPT methods. As the HRIPT constitutes a key parameter in current quantitative risk assessment for chemicals/drugs, such standardization should aid potential prediction of allergic contact dermatitis potential.
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Affiliation(s)
- Jordan L Bormann
- University of South Dakota, Sanford School of Medicine, Sioux Falls, SD, 57105, USA.
| | - Howard I Maibach
- UCSF, Dermatology Department, San Francisco, CA, 94143-0989, USA.
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56
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Phototoxic and Photoallergic Contact Reactions. Contact Dermatitis 2021. [DOI: 10.1007/978-3-030-36335-2_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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57
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Rodrigues J, Kuruvilla ME, Vanijcharoenkarn K, Patel N, Hom MM, Wallace DV. The spectrum of allergic ocular diseases. Ann Allergy Asthma Immunol 2020; 126:240-254. [PMID: 33276116 DOI: 10.1016/j.anai.2020.11.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 01/01/2023]
Abstract
OBJECTIVE The purpose of this article is to review the pathophysiologic mechanisms, differential diagnosis, evaluation, and treatment of the various manifestations of ocular allergy, with an especial focus on immunoglobulin E (IgE)-mediated disease. DATA SOURCES A PubMed search was performed to include articles, using the search terms ocular allergy and allergic conjunctivitis. STUDY SELECTIONS Recent and relevant human studies in the English language pertaining to our topic of study were selected. Animal studies pertaining to pathophysiology of ocular allergy were also reviewed. We focused on clinical trials, practice guidelines, reviews, and systematic reviews. In addition, case reports were reviewed if they described rare clinical presentations, disease mechanisms, or novel therapies. RESULTS Ocular allergy encompasses both IgE- and non-IgE-mediated disease, and the clinical severity may range from mild to sight-threatening inflammation. A comprehensive treatment regimen including education, lifestyle measures, topical therapies, and even systemic interventions may be necessary for the effective management of ocular allergies, tailored according to symptom severity. CONCLUSION Ocular allergy is frequently encountered by allergists and eye-care specialists, and despite progressively increasing incidence, it often remains underdiagnosed and, hence, untreated.
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Affiliation(s)
- Jonathan Rodrigues
- Allergy & Immunology, Sanford Health, Bismarck, North Dakota; Department of Internal Medicine and Department of Pediatrics, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota.
| | - Merin E Kuruvilla
- Division of Pulmonary, Allergy, Critical Care, and Sleep, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Kristine Vanijcharoenkarn
- Division of Pulmonary, Allergy, Critical Care, and Sleep, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Nikki Patel
- Allergy & Immunology, Sanford Health, Sioux Falls, South Dakota
| | | | - Dana V Wallace
- Allergy and Immunology, Nova Southeastern University, Davie, Florida
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58
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Dales JP, Desplat-Jégo S. Metal Imbalance in Neurodegenerative Diseases with a Specific Concern to the Brain of Multiple Sclerosis Patients. Int J Mol Sci 2020; 21:E9105. [PMID: 33266021 PMCID: PMC7730295 DOI: 10.3390/ijms21239105] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/29/2020] [Accepted: 11/19/2020] [Indexed: 12/16/2022] Open
Abstract
There is increasing evidence that deregulation of metals contributes to a vast range of neurodegenerative diseases including multiple sclerosis (MS). MS is a chronic inflammatory disease of the central nervous system (CNS) manifesting disability and neurological symptoms. The precise origin of MS is unknown, but the disease is characterized by focal inflammatory lesions in the CNS associated with an autoimmune reaction against myelin. The treatment of this disease has mainly been based on the prescription of immunosuppressive and immune-modulating agents. However, the rate of progressive disability and early mortality is still worrisome. Metals may represent new diagnostic and predictive markers of severity and disability as well as innovative candidate drug targets for future therapies. In this review, we describe the recent advances in our understanding on the role of metals in brain disorders of neurodegenerative diseases and MS patients.
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Affiliation(s)
- Jean-Philippe Dales
- Institute of Neurophysiopathology, CNRS, INP, Aix-Marseille University, 13005 Marseille, France;
- Assistance Publique-Hôpitaux de Marseille, Hôpital Nord, Pavillon Etoile, Pôle de Biologie, Service d’anatomie-pathologie, CEDEX 20, 13915 Marseille, France
| | - Sophie Desplat-Jégo
- Institute of Neurophysiopathology, CNRS, INP, Aix-Marseille University, 13005 Marseille, France;
- Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception, Pôle de Biologie, Service d’Immunologie, 13005 Marseille, France
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Brites GS, Ferreira I, Sebastião AI, Silva A, Carrascal M, Neves BM, Cruz MT. Allergic contact dermatitis: From pathophysiology to development of new preventive strategies. Pharmacol Res 2020; 162:105282. [PMID: 33161140 DOI: 10.1016/j.phrs.2020.105282] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 11/25/2022]
Abstract
As the body's first line of defense, the skin is the organ most frequently exposed to chemicals present in personal hygiene products, household products, or materials used in the work environment. In this context, skin disorders account for more than 40 % of all occupational and work-related diseases, constituting a significant public health burden. Among skin disorders, allergic contact dermatitis (ACD) is the most prevalent occupational disease and the most common form of immunotoxicity in humans. ACD is a T-cell-mediated skin inflammation resulting from the priming and expansion of allergen-specific CD4+ and CD8+ T cells. The clinical condition is characterized by local skin rash, itchiness, redness, swelling, and lesions, being mainly diagnosed by the patch test. Upon ACD diagnosis, avoiding the exposure to the triggering allergen is the mainstay of treatment to prevent future flares. In cases where avoidance is not possible, the use of a standard of care interim treatments such as steroid creams or ointments, barrier creams, and moisturizers are strongly recommended to alleviate symptoms. In this review, we sought to provide the reader with an overview of the pathophysiology of ACD as well as the currently available pharmacological treatment options. Furthermore, a comprehensive outline of several preventive strategies is also provided.
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Affiliation(s)
- Gonçalo Sousa Brites
- Faculty of Pharmacy, University of Coimbra, Coimbra, 3000-548, Portugal; Center for Neuroscience and Cell Biology - CNC, University of Coimbra, Coimbra, 3004-504, Portugal
| | - Isabel Ferreira
- Faculty of Pharmacy, University of Coimbra, Coimbra, 3000-548, Portugal; Center for Neuroscience and Cell Biology - CNC, University of Coimbra, Coimbra, 3004-504, Portugal
| | | | - Ana Silva
- Center for Neuroscience and Cell Biology - CNC, University of Coimbra, Coimbra, 3004-504, Portugal
| | - Mylene Carrascal
- Center for Neuroscience and Cell Biology - CNC, University of Coimbra, Coimbra, 3004-504, Portugal; Tecnimede Group, Sintra, 2710-089, Portugal
| | - Bruno Miguel Neves
- Department of Medical Sciences and Institute of Biomedicine - iBiMED, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Maria T Cruz
- Faculty of Pharmacy, University of Coimbra, Coimbra, 3000-548, Portugal; Center for Neuroscience and Cell Biology - CNC, University of Coimbra, Coimbra, 3004-504, Portugal.
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Kline JM, Arriaga-Gomez E, Yangdon T, Boo B, Landry J, Saldías-Montivero M, Neamonitaki N, Mengistu H, Silverio S, Zacheis H, Pasha D, Martinov T, Fife BT, Chatterjea D. Repeated dermal application of the common preservative methylisothiazolinone triggers local inflammation, T cell influx, and prolonged mast cell-dependent tactile sensitivity in mice. PLoS One 2020; 15:e0241218. [PMID: 33104726 PMCID: PMC7588120 DOI: 10.1371/journal.pone.0241218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/09/2020] [Indexed: 11/26/2022] Open
Abstract
Occupational exposure to toxic chemicals increases the risk of developing localized provoked vulvodynia-a prevalent, yet poorly understood, chronic condition characterized by sensitivity to touch and pressure, and accumulation of mast cells in painful tissues. Here, we topically sensitized female ND4 Swiss mice to the common household and industrial preservative methylisothiazolinone (MI) and subsequently challenged them daily with MI or acetone and olive oil vehicle on the labiar skin. MI-challenged mice developed significant, persistent tactile sensitivity and long-lasting local accumulation of mast cells alongside early, transient increases in CD4+ and CD8+ T cells, eosinophils, neutrophils, and increases in pro-inflammatory cytokines. Therapeutic administration of imatinib, a c-Kit inhibitor known to inhibit mast cell survival, led to reduced mast cell accumulation and alleviated tactile genital pain. We provide the first pre-clinical evidence of dermal MI-induced mast-cell dependent pain and lay the groundwork for detailed understanding of these intersections between MI-driven immunomodulation and chronic pain.
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Affiliation(s)
- Jaclyn M. Kline
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Erica Arriaga-Gomez
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Tenzin Yangdon
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Beebie Boo
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Jasmine Landry
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | | | - Nefeli Neamonitaki
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Hanna Mengistu
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Sayira Silverio
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Hayley Zacheis
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Dogukan Pasha
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
| | - Tijana Martinov
- Department of Medicine, Center for Immunology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Brian T. Fife
- Department of Medicine, Center for Immunology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Devavani Chatterjea
- Biology Department, Macalester College, Saint Paul, Minnesota, United States of America
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Wagner F, Woitalla-Bruning J. Allergisches Kontaktekzem nach Anwendung eines grünen Permanentmarkers. PHLEBOLOGIE 2020. [DOI: 10.1055/a-1171-4952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
ZusammenfassungPräoperativ wird zur Vermeidung von Eingriffsverwechslungen die zu operierende Extremität mittels Farbmarkierungen detektiert. In der Phlebologie dient die Farbmarkierung darüber hinaus zum Auffinden der zu operierenden Varikose am Bein und gibt Hinweise darüber, welche Areale vor der Operation betäubt werden müssen. Das dabei verwendete Farbmaterial sollte der mehrmaligen gründlichen Desinfektion/Antisepsis der Haut des Operationsgebiets standhalten.In der Vergangenheit wurde bisher nur selten von Kontaktekzemen ausgelöst durch Permanentmarker berichtet. Wir präsentieren einen klinisch sehr beeindruckenden Fall einer Kontaktallergie auf einen grünen Permanentmarker.
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Affiliation(s)
- Felix Wagner
- Zentrum für Venen- und Dermatochirurgie, Krankenhaus Tabea GmbH & Co. KG
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The Effect of Atopy in the Prevalence of Contact Sensitization: The Experience of a Greek Referral Center. Dermatol Res Pract 2020; 2020:3946084. [PMID: 33133180 PMCID: PMC7568788 DOI: 10.1155/2020/3946084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/05/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022] Open
Abstract
Contact dermatitis is a well-known skin condition, which is related to stimuli and environmental exposure to chemicals, affecting all ages as well as both genders. In the present work, we attempt to investigate the patterns of contact sensitization, with respect to the personal history of atopy (AT), in Greece in a large number of allergens, using patch testing. The retrospective analysis included clinical routine data of 1978 patients collected from 2014 to 2016 in the Laboratory of Patch Testing, National Referral Centre of Occupational Dermatoses. Sensitization, in all cases, was tested with 28 allergens of the European baseline series as adjusted to our local circumstances and clinical experience. A total population of 1978 patients was evaluated, with a male-to-female ratio of 0.45 (1359 females/619 males). From our patient cohort, 693 (35%) patients were evaluated with a history of atopy, while 1285 (65%) were nonatopic. The five most prevalent allergens in the total population without AT were nickel sulphate 5% (15.47%), fragrance mix (I) 8% (9.10%), balsam of Peru (6.47%), cobalt chloride 1% (4.70%), and thiomersal 0.1% (4.10%). Respectively, in the total population with AT, the five most prevalent allergens were nickel sulphate 5% (10.36%), fragrance mix (I) 8% (5.11%), balsam of Peru (3.29%), thiomersal 0.1% (3.03%), and cobalt chloride 1% (2.78%). Contact dermatitis surveillance is of great importance towards the clinical and systematic understanding of the disease. Further studies should be directed towards that end, in order to facilitate more effective health policies.
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63
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Anlar HG, Galbiati V, Corsini E, BaŞaran N. Evaluation of the Possible Role of miRNAs in Chemical Allergen Potency. Turk J Pharm Sci 2020; 17:452-456. [PMID: 32939143 DOI: 10.4274/tjps.galenos.2019.25349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 07/25/2019] [Indexed: 12/01/2022]
Abstract
Objectives MicroRNAs (miRNAs) are short, endogenous noncoding RNA molecules that can bind to certain parts of target mRNAs, thereby regulating gene expression. Studies showed that miRNAs could be up- or downregulated in different allergic skin conditions but there is still need for further studies. The aim of this study was to investigate the expression of miRNAs in response to the common contact allergen Bandrowski's base (BB), the principal allergen in patients reacting to p-phenylenediamine (PPD). Materials and Methods The human promyelocytic cell line THP-1 was exposed to BB at a concentration of 1 μg/mL for 24, 48, and 72 h. The dose was selected from the results of cytotoxicity assays. RNA was purified and miRNA expression profile and real-time polymerase chain reaction (RTPCR) were performed to identify up- or downregulated miRNAs and confirm their modulations. Results Among the different modulated miRNAs, the upregulation of miRNA-155 and the downregulation of miRNA-21 were found to be important because these are related to immune system. This expression profile of miRNAs was also confirmed by RT-PCR. Conclusion These preliminary results showed that miR-155 and miR-21 may play a role in the pathogenesis of allergic contact dermatitis, but further studies are needed to clarify their definite roles.
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Affiliation(s)
- Hatice Gül Anlar
- Zonguldak Bülent Ecevit University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Zonguldak, Turkey
| | - Valentina Galbiati
- Università degli Studi di Milano, Department of Environmental Science and Policy, Milan, Italy
| | - Emanuela Corsini
- Università degli Studi di Milano, Department of Environmental Science and Policy, Milan, Italy
| | - Nurşen BaŞaran
- Hacettepe University Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey
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64
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Salimi A, Jamali Z, Atashbar S, Khezri S, Ghorbanpour AM, Etefaghi N. Pathogenic Mechanisms and Therapeutic Implication in Nickel-Induced Cell Damage. Endocr Metab Immune Disord Drug Targets 2020; 20:968-984. [DOI: 10.2174/1871530320666200214123118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/24/2019] [Accepted: 03/07/2019] [Indexed: 11/22/2022]
Abstract
Background:
Nickel (Ni) is mostly applied in a number of industrial areas such as printing
inks, welding, alloys, electronics and electrical professions. Occupational or environmental exposure to
nickel may lead to cancer, allergy reaction, nephrotoxicity, hepatotoxicity, neurotoxicity, as well as
cell damage, apoptosis and oxidative stress.
Methods:
In here, we focused on published studies about cell death, carcinogenicity, allergy reactions
and neurotoxicity, and promising agents for the prevention and treatment of the toxicity by Ni.
Results:
Our review showed that in the last few years, more researches have focused on reactive oxygen
species formation, oxidative stress, DNA damages, apoptosis, interaction with involving receptors
in allergy and mitochondrial damages in neuron induced by Ni.
Conclusion:
The collected data in this paper provide useful information about the main toxicities induced
by Ni, also, their fundamental mechanisms, and how to discover new ameliorative agents for
prevention and treatment by reviewing agents with protective and therapeutic consequences on Ni
induced toxicity.
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Affiliation(s)
- Ahmad Salimi
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Zhaleh Jamali
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Saman Atashbar
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Saleh Khezri
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Amir M. Ghorbanpour
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Nahid Etefaghi
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
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65
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Brazen BC, Wehausen B, Usmani AA. Not All Fun and Games: A Case Report of Contact Dermatitis Related to Slime and Play-Doh. Cureus 2020; 12:e10272. [PMID: 33042709 PMCID: PMC7538031 DOI: 10.7759/cureus.10272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Slime and Play-Doh have been gaining popularity among adolescents and preteens. Both are gooey, viscoelastic substances that can be morphed and molded into virtually anything imaginable. Slime can be made from several household products including school glue and borax, which have both been linked to cases of irritant and allergic contact dermatitis, conditions that historically involve activation of many immune-regulatory cells such as Langerhans' cells and T cells. We review the rising incidence of contact dermatitis related to Slime and Play-Doh, pathogenesis, and hallmark findings, along with several treatment options to help clinicians expediently diagnose and treat the condition.
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Affiliation(s)
- Brett C Brazen
- Dermatology, Nova Southeastern University - Kiran C. Patel College of Osteopathic Medicine, Palm Harbor, USA
| | - Brooke Wehausen
- Dermatology, Broward Health Medical Center, Fort Lauderdale, USA
| | - Andleeb A Usmani
- Dermatology, Broward Health Medical Center, Fort Lauderdale, USA.,Dermatology, Nicklaus Children's Hospital, Miami, USA
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66
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Piao CH, Fan YJ, Nguyen TV, Song CH, Jeong HJ, Chai OH. Effects of thermal therapy combined with blue light-emitting diode irradiation on trimellitic anhydride-induced acute contact hypersensitivity mouse model. J DERMATOL TREAT 2020; 33:1343-1350. [PMID: 32783679 DOI: 10.1080/09546634.2020.1809622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUD The biological effect of phototherapy, which involves using visible light for disease treatment, has attracted recent attention, especially in dermatological practice. Light-emitting diode (LED) irradiation increases dermal collagen level and reduces inflammation. It has been suggested that thermal therapy and LED irradiation can modulate inflammatory processes. However, little is known about the molecular mechanism of the anti-inflammatory effects of thermal therapy and LED irradiation. OBJECTIVE This study was to determine the anti-inflammatory effect of thermal therapy combined with LED irradiation on trimellitic anhydride (TMA)-induced acute contact hypersensitivity (CHS) mouse model. METHODS Twenty-four BALB/c mice were randomly divided into the following groups: Vehicle group, TMA group, TMA + alternating thermal therapy group (Alternating group), and TMA + alternating + LED group (LED group). Ear swelling was measured based on the thickness of ear before and after each TMA challenge. Vascular permeability was evaluated by the extravasation of Evans blue dye. Serum IgE level, Th1/Th2/Th17 cytokines, and related transcription factors were measured using ELISA kits, and histological examination was illustrated in ear tissue. RESULTS The LED group showed reduction in ear swelling response, vascular permeability, serum IgE levels, Th2/Th17 cytokine levels, and inflammatory cell infiltration. Moreover, the LED group showed increased Th1 cytokine levels. CONCLUSIONS These results indicate that thermal therapy combined with LED irradiation alleviated TMA-induced acute CHS in the mouse model. Thermal therapy and phototherapy should be considered as a novel therapeutic tool for the treatment of skin inflammation.
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Affiliation(s)
- Chun Hua Piao
- Department of Anatomy, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Yan Jing Fan
- Department of Anatomy, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Thi Van Nguyen
- Department of Anatomy, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Chang Ho Song
- Department of Anatomy, Jeonbuk National University Medical School, Jeonju, Republic of Korea.,Institute for Medical Sciences, Jeonbuk National University, Jeonju, Republic of Korea
| | - Hwan-Jeong Jeong
- Department of Nuclear Medicine, Molecular Imaging and Therapeutic Medicine Research Center, Research Institute of Clinical Medicine, Jeonbuk National University Medical School and Hospital, Jeonju, Republic of Korea.,Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Ok Hee Chai
- Department of Anatomy, Jeonbuk National University Medical School, Jeonju, Republic of Korea.,Institute for Medical Sciences, Jeonbuk National University, Jeonju, Republic of Korea.,Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, Republic of Korea
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67
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Potential Co-Factors of an Intraoral Contact Allergy-A Cross-Sectional Study. Dent J (Basel) 2020; 8:dj8030083. [PMID: 32756376 PMCID: PMC7559516 DOI: 10.3390/dj8030083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/14/2020] [Accepted: 07/22/2020] [Indexed: 01/07/2023] Open
Abstract
The aim of this cross-sectional study was to evaluate the frequency of dental allergens and potential co-factors, especially hypothyroidism, for patients with an intraoral contact allergy. From 2015 to 2016, patients with confirmed symptoms of an intraoral contact allergy (study group SG n = 50) were recruited in the dental clinic of the University of Leipzig. The participants of the control group (CG n = 103) were patients without oral diseases or intraoral symptoms of a contact allergy. For the data collection, a new "Allergy questionnaire" was developed. Information on allergies and general diseases were collected. The statistical analysis was carried out with SPSS 23.0. Sensitizations/allergies to metals and composites were higher in SG compared to CG. Of all study participants (n = 148), 14.2% (n = 21) had a nickel allergy. In 18% (n = 8) of the SG a cobalt allergy based on all metal allergens could be seen. In addition, an association between a nickel and cobalt allergy was found. Hypothyroidism occurred significantly more frequently (p = 0.049) in SG than in CG. Sensitizations and allergies can occur to metals in dental alloys. Hypothyroidism increased the risk of having an allergy threefold.
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68
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Quercitrin, the Main Compound in Wikstroemia indica, Mitigates Skin Lesions in a Mouse Model of 2,4-Dinitrochlorobenzene-Induced Contact Hypersensitivity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:4307161. [PMID: 32695208 PMCID: PMC7368186 DOI: 10.1155/2020/4307161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 05/29/2020] [Indexed: 02/04/2023]
Abstract
Hapten-induced contact hypersensitivity (CHS) is widely utilized to induce immune activation in animal models of allergic contact dermatitis. Our previous findings suggested that the 95% EtOH extract of Wikstroemia indica (L.) C. A. Mey. has antiallergic and anti-inflammatory effects in DNCB-treated CHS SKH-1 hairless mice. The aim of this study was to evaluate the protective effects of compounds isolated from the EtOAc fraction of W. indica in RBL-2H3 cells and 2,4-dinitrochlorobenzene- (DNCB-) induced CHS mice. Of eight compounds in W. indica, that is, umbelliferone, daphnoretin, wikstrocoumarin, (+)-syringaresinol, tricin, (+)-lariciresinol, erythro-guaiacylglycerol-β-coniferyl ether, and quercitrin, quercitrin exhibited the most antiallergic activity against antigen-induced β-hexosaminidase release and IL-4 mRNA expression, which are markers of degranulation in RBL-2H3 cells. After a 7-sensitizing period, 14 days of DNCB treatment with or without topical pimecrolimus (1%) or quercitrin (0.5%) treatment, quercitrin was found to suppress DNCB-induced increases in serum IL-4 and IgE concentrations and transepidermal water loss. These results indicate that quercitrin has therapeutic potential for treatment of allergies and allergy-related contact dermatitis.
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69
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Palmoplantares Kontaktekzem. Hautarzt 2020; 71:6-9. [DOI: 10.1007/s00105-020-04629-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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70
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Anderson K, Ryan N, Siddiqui A, Pero T, Volpedo G, Cooperstone JL, Oghumu S. Black Raspberries and Protocatechuic Acid Mitigate DNFB-Induced Contact Hypersensitivity by Down-Regulating Dendritic Cell Activation and Inhibiting Mediators of Effector Responses. Nutrients 2020; 12:E1701. [PMID: 32517233 PMCID: PMC7352349 DOI: 10.3390/nu12061701] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 06/04/2020] [Indexed: 11/16/2022] Open
Abstract
Contact hypersensitivity (CHS) is the most common occupational dermatological disease. Dendritic cells (DCs) mediate the sensitization stage of CHS, while T-cells facilitate the effector mechanisms that drive CHS. Black raspberry (Rubus occidentalis, BRB) and BRB phytochemicals possess immunomodulatory properties, but their dietary effects on CHS are unknown. We examined the effects of diets containing BRB and protocatechuic acid (PCA, a constituent of BRB and an anthocyanin metabolite produced largely by gut microbes), on CHS, using a model induced by 2,4-dinitrofluorobenze (DNFB). Mice were fed control diet or diets supplemented with BRB or PCA. In vitro bone-marrow derived DCs and RAW264.7 macrophages were treated with BRB extract and PCA. Mice fed BRB or PCA supplemented diets displayed decreased DNFB-induced ear swelling, marked by decreased splenic DC accumulation. BRB extract diminished DC maturation associated with reduced Cd80 expression and Interleukin (IL)-12 secretion, and PCA reduced IL-12. Dietary supplementation with BRB and PCA induced differential decreases in IL-12-driven CHS mediators, including Interferon (IFN)-γ and IL-17 production by T-cells. BRB extracts and PCA directly attenuated CHS-promoting macrophage activity mediated by nitric oxide and IL-12. Our results demonstrate that BRB and PCA mitigate CHS pathology, providing a rationale for CHS alleviation via dietary supplementation with BRB or BRB derived anthocyanins.
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Affiliation(s)
- Kelvin Anderson
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.A.); (N.R.); (A.S.); (T.P.); (G.V.)
| | - Nathan Ryan
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.A.); (N.R.); (A.S.); (T.P.); (G.V.)
- Division of Anatomy, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Arham Siddiqui
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.A.); (N.R.); (A.S.); (T.P.); (G.V.)
| | - Travis Pero
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.A.); (N.R.); (A.S.); (T.P.); (G.V.)
- College of Dentistry, The Ohio State University, Columbus, OH 43210, USA
| | - Greta Volpedo
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.A.); (N.R.); (A.S.); (T.P.); (G.V.)
- Department of Microbiology, The Ohio State University, Columbus, OH 43210, USA
| | - Jessica L. Cooperstone
- Department of Horticulture and Crop Science, The Ohio State University, Columbus, OH 43210, USA;
- Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210, USA
| | - Steve Oghumu
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.A.); (N.R.); (A.S.); (T.P.); (G.V.)
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71
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Implication of T Helper Cytokines in Contact Dermatitis and Atopic Dermatitis. CURRENT TREATMENT OPTIONS IN ALLERGY 2020. [DOI: 10.1007/s40521-020-00263-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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72
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Borrego L. Past, Present, and Future of Contact Dermatitis Registries in the Internet Era. CURRENT TREATMENT OPTIONS IN ALLERGY 2020. [DOI: 10.1007/s40521-020-00261-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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73
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Silverberg NB, Pelletier JL, Jacob SE, Schneider LC. Nickel Allergic Contact Dermatitis: Identification, Treatment, and Prevention. Pediatrics 2020; 145:e20200628. [PMID: 32341178 DOI: 10.1542/peds.2020-0628] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Nickel is a ubiquitous metal added to jewelry and metallic substances for its hardening properties and because it is inexpensive. Estimates suggest that at least 1.1 million children in the United States are sensitized to nickel. Nickel allergic contact dermatitis (Ni-ACD) is the most common cutaneous delayed-type hypersensitivity reaction worldwide. The incidence among children tested has almost quadrupled over the past 3 decades. The associated morbidities include itch, discomfort, school absence, and reduced quality of life. In adulthood, individuals with Ni-ACD may have severe disabling hand eczema. The increasing rate of Ni-ACD in children has been postulated to result from early and frequent exposure to metals with high amounts of nickel release (eg, as occurs with ear piercing or with products used daily in childhood such as toys, belt buckles, and electronics).To reduce exposure to metal sources with high nickel release by prolonged and direct contact with human skin, Denmark and the European Union legislated a directive several decades ago with the goal of reducing high nickel release and the incidence of Ni-ACD. Since then, there has been a global reduction in incidence of Ni-ACD in population-based studies of adults and studies of children and young adults being tested for allergic contact dermatitis. These data point to nickel exposure as a trigger for elicitation of Ni-ACD and, further, provide evidence that legislation can have a favorable effect on the economic and medical health of a population.This policy statement reviews the epidemiology, history, and appearances of Ni-ACD. Examples of sources of high nickel release are discussed to highlight how difficult it is to avoid this metal in modern daily lives. Treatments are outlined, and avoidance strategies are presented. Long-term epidemiological interventions are addressed. Advocacy for smarter nickel use is reviewed. The American Academy of Pediatrics supports US legislation that advances safety standards (as modeled by the European Union) that protect children from early and prolonged skin exposure to high-nickel-releasing items. Our final aim for this article is to aid the pediatric community in developing nickel-avoidance strategies on both individual and global levels.
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Affiliation(s)
- Nanette B Silverberg
- Departments of Dermatology and Pediatrics, Mt Sinai Hospital and Icahn School of Medicine at Mt Sinai, New York, New York;
| | - Janice L Pelletier
- Northern Light Health, Bangor, Maine
- College of Medicine, University of New England, Biddeford, Maine
| | - Sharon E Jacob
- Department of Dermatology, Loma Linda University, Loma Linda, California
- Departments of Medicine and Pediatrics, University of California, Riverside, California; and
| | - Lynda C Schneider
- Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
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Laggner M, Copic D, Nemec L, Vorstandlechner V, Gugerell A, Gruber F, Peterbauer A, Ankersmit HJ, Mildner M. Therapeutic potential of lipids obtained from γ-irradiated PBMCs in dendritic cell-mediated skin inflammation. EBioMedicine 2020; 55:102774. [PMID: 32403085 PMCID: PMC7218268 DOI: 10.1016/j.ebiom.2020.102774] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/08/2020] [Accepted: 04/15/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Since numerous pathological conditions are evoked by unwanted dendritic cell (DC) activity, therapeutic agents modulating DC functions are of great medical interest. In regenerative medicine, cellular secretomes have gained increasing attention and valuable immunomodulatory properties have been attributed to the secretome of γ-irradiated peripheral blood mononuclear cells (PBMCs). Potential effects of the PBMC secretome (PBMCsec) on key DC functions have not been elucidated so far. METHODS We used a hapten-mediated murine model of contact hypersensitivity (CH) to study the effects of PBMCsec on DCs in vivo. Effects of PBMCsec on human DCs were investigated in monocyte-derived DCs (MoDC) and ex vivo skin cultures. DCs were phenotypically characterised by transcriptomics analyses and flow cytometry. DC function was evaluated by cytokine secretion, antigen uptake, PBMC proliferation and T-cell priming. FINDINGS PBMCsec significantly alleviated tissue inflammation and cellular infiltration in hapten-sensitized mice. We found that PBMCsec abrogated differentiation of MoDCs, indicated by lower expression of classical DC markers CD1a, CD11c and MHC class II molecules. Furthermore, PBMCsec reduced DC maturation, antigen uptake, lipopolysaccharides-induced cytokine secretion, and DC-mediated immune cell proliferation. Moreover, MoDCs differentiated with PBMCsec displayed diminished ability to prime naïve CD4+T-cells into TH1 and TH2 cells. Furthermore, PBMCsec modulated the phenotype of DCs present in the skin in situ. Mechanistically, we identified lipids as the main biomolecule accountable for the observed immunomodulatory effects. INTERPRETATION Together, our data describe DC-modulatory actions of lipids secreted by stressed PBMCs and suggest PBMCsec as a therapeutic option for treatment of DC-mediated inflammatory skin conditions. FUNDING This research project was supported by the Austrian Research Promotion Agency (Vienna, Austria; grant "APOSEC" 862068; 2015-2019) and the Vienna Business Agency (Vienna, Austria; grant "APOSEC to clinic" 2343727).
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Affiliation(s)
- Maria Laggner
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Vienna, Austria; Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Dragan Copic
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Vienna, Austria; Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Lucas Nemec
- Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Lazarettgasse 14, 1090 Vienna, Austria
| | - Vera Vorstandlechner
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Vienna, Austria; Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Alfred Gugerell
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Vienna, Austria; Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Florian Gruber
- Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Lazarettgasse 14, 1090 Vienna, Austria
| | - Anja Peterbauer
- Austrian Red Cross Blood Transfusion Service of Upper Austria, Linz, Austria
| | - Hendrik J Ankersmit
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Vienna, Austria; Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria.
| | - Michael Mildner
- Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Lazarettgasse 14, 1090 Vienna, Austria.
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Abstract
GENERAL PURPOSE To present a case-based review illustrating atopic and contact dermatitis, including management of these conditions using topical and systemic therapies. TARGET AUDIENCE This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES After participating in this educational activity, the participant should be better able to:1. Review the prevalence, etiology, and consequences of the various types of dermatitis.2. Describe the clinical manifestations and differential diagnosis of the various types of dermatitis.3. Outline the treatment options for the various types of dermatitis. ABSTRACT Eczematous reactions such as atopic dermatitis and contact dermatitis are prevalent worldwide. Despite contrasting pathophysiology, the diagnosis and management of these dermatitides can be challenging for healthcare providers. Differences in the distribution of the affected areas, duration of onset, and associated symptoms may help to distinguish these conditions. Diagnosis of the respective conditions is useful in developing appropriate management plans. Herein, the authors present a case-based review illustrating these different disease entities. Management of these conditions, including the use of topical and systemic therapies, is discussed.
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76
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Goes HFDO, Virgens AR, de Carvalho GC, Pietrobon AJ, Branco ACCC, Oliveira LMDS, Fernandes IG, Pereira NV, Sotto MN, Dos Reis VMS, Sato MN. Proinflammatory and regulatory mechanisms in allergic contact dermatitis caused by methylchloroisothiazolinone and methylisothiazolinone. Exp Dermatol 2020; 29:490-498. [PMID: 32049375 DOI: 10.1111/exd.14086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/17/2020] [Accepted: 02/05/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI) are the cause of an increasing number of contact allergies. Understanding the mechanisms by which MCI/MI induces proinflammatory and regulatory factors production is necessary to understand the outcome of allergic contact dermatitis (ACD). OBJECTIVES To evaluate the dysfunction of proinflammatory cytokines and regulatory factors in the positive MCI/MI patch test at the transcriptional and protein expression levels. Moreover, to analyse the cytokines production induced by MI in peripheral blood mononuclear cells (PBMCs). MATERIALS AND METHODS The selected patients had positive MCI/MI patch test results. The expression of proinflammatory factors was evaluated by q-PCR and immunochemistry at 48 hours of positive MCI/MI patch test. The MCI/MI- or MI- induced secretion of IL-1β, TNF and IL-6 by PBMC was analysed by flow cytometry. RESULTS The results showed a decreased TLR4 expression with upregulated IL6, FOXP3, IL10 and TGFβ mRNA expression as assessed by q-PCR at the site of the MCI/MI skin reaction. We detected increased protein levels of TLR4, FOXP3 and IL-10 in the dermis layer in the ACD reaction by immunocitochemistry. Moreover, MCI/MI induced proinflammatory cytokine production by PBMC through the NF-κB signalling pathway. CONCLUSION Considering the altered innate immune response triggered by MCI/MI sensitization, these findings indicate that the regulatory process at the induction phase of ACD is a crucial mechanism. Given the increase in occupational and domestic exposure to MCI/MI, the underlying immunological mechanisms should be understood.
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Affiliation(s)
- Heliana Freitas de Oliveira Goes
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.,Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil
| | - Anangelica Rodrigues Virgens
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.,Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil
| | - Gabriel Costa de Carvalho
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil
| | - Anna Julia Pietrobon
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.,Department of Immunology, Institute of Biomedical Sciencies, University of São Paulo, São Paulo, Brazil
| | - Anna Cláudia Calvielli Castelo Branco
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.,Department of Immunology, Institute of Biomedical Sciencies, University of São Paulo, São Paulo, Brazil
| | - Luanda Mara da Silva Oliveira
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil
| | - Iara G Fernandes
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.,Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil
| | | | | | | | - Maria Notomi Sato
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.,Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil
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Galbiati V, Marinovich M, Corsini E. Mechanistic understanding of dendritic cell activation in skin sensitization: additional evidences to support potency classification. Toxicol Lett 2020; 322:50-57. [DOI: 10.1016/j.toxlet.2020.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 01/23/2023]
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78
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Thélu A, Catoire S, Kerdine-Römer S. Immune-competent in vitro co-culture models as an approach for skin sensitisation assessment. Toxicol In Vitro 2020; 62:104691. [DOI: 10.1016/j.tiv.2019.104691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/05/2019] [Accepted: 10/14/2019] [Indexed: 12/21/2022]
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An N, Pourzal S, Luccioli S, Vukmanović S. Effects of diet on skin sensitization by nickel, poison ivy, and sesquiterpene lactones. Food Chem Toxicol 2020; 137:111137. [PMID: 31982450 DOI: 10.1016/j.fct.2020.111137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/20/2019] [Accepted: 01/17/2020] [Indexed: 12/12/2022]
Abstract
Skin contact or exposure to sensitizers often occurs as a consequence of occupational exposures (e.g. poison ivy in forestry), wearing jewelry (e.g. nickel), or use of cosmetics (e.g. fragrances). However, many of the known skin sensitizers or their chemical variants are also consumed orally through foods or other sources. Since oral exposure to antigenic substances can lead to tolerance, consumption of sensitizers may impact the development and potency of skin sensitization, especially if the sensitizer is consumed early in life, prior to the first skin contact. To address this issue, we have reviewed human clinical and epidemiological literature relevant to this subject and evaluated whether early oral exposures to relevant sensitizers, or their chemical variants, are associated with reduced prevalence of skin sensitization to three main allergic sensitizers - nickel, urushiols of poison ivy, and sesquiterpene lactones of chrysanthemum and other plants.
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Affiliation(s)
- Nan An
- Cosmetics Division, Office of Cosmetics and Colors (OCAC), Center for Food Safety and Applied Nutrition (CFSAN), Food and Drug Administration (FDA), USA
| | - Selma Pourzal
- Cosmetics Division, Office of Cosmetics and Colors (OCAC), Center for Food Safety and Applied Nutrition (CFSAN), Food and Drug Administration (FDA), USA
| | - Stefano Luccioli
- Office of Compliance (OC), Center for Food Safety and Applied Nutrition (CFSAN), Food and Drug Administration (FDA), USA
| | - Stanislav Vukmanović
- Cosmetics Division, Office of Cosmetics and Colors (OCAC), Center for Food Safety and Applied Nutrition (CFSAN), Food and Drug Administration (FDA), USA.
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80
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Marigliani B, Sehn FP, Silva JVMA, Balottin LBL, Augusto EDFP, Buehler AM. The Overt and Hidden Use of Animal-Derived Products in Alternative Methods for Skin Sensitisation: A Systematic Review. Altern Lab Anim 2020; 47:174-195. [PMID: 31902222 DOI: 10.1177/0261192919896361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In vitro methods that can replace animal testing in the identification of skin sensitisers are now a reality. However, as cell culture and related techniques usually rely on animal-derived products, these methods may be failing to address the complete replacement of animals in safety assessment. The objective of this study was to identify the animal-derived products that are used as part of in vitro methods for skin sensitisation testing. Thus, a systematic review of 156 articles featuring 83 different in vitro methods was carried out and, from this review, the use of several animal-derived products from different species was identified, with the use of fetal bovine serum being cited in most of the methods (78%). The use of sera from other animals, monoclonal antibodies and animal proteins were also variously mentioned. While non-animal alternatives are available and methods free of animal-derived products are emerging, most of the current methods reported used at least one animal-derived product, which raises ethical and technical concerns. Therefore, to deliver technically and ethically better in vitro methods for the safety assessment of chemicals, more effort should be made to replace products of animal origin in existing methods and to avoid their use in the development of new method protocols.
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Affiliation(s)
- Bianca Marigliani
- Department of Research and Toxicology, Humane Society International (HSI), Washington, DC, USA
| | - Felipe Perraro Sehn
- Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | | | - Luciene Bottentuit López Balottin
- Laboratory of Tissue Bioengineering, National Institute of Metrology, Quality and Technology (Inmetro), Duque de Caxias, Rio de Janeiro, Brazil
| | - Elisabeth de Fatima Pires Augusto
- Department of Science and Technology, Science and Technology Institute, Federal University of São Paulo (UNIFESP), São José dos Campos, São Paulo, Brazil
| | - Anna Maria Buehler
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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81
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Nicolai S, Wegrecki M, Cheng TY, Bourgeois EA, Cotton RN, Mayfield JA, Monnot GC, Le Nours J, Van Rhijn I, Rossjohn J, Moody DB, de Jong A. Human T cell response to CD1a and contact dermatitis allergens in botanical extracts and commercial skin care products. Sci Immunol 2020; 5:5/43/eaax5430. [PMID: 31901073 DOI: 10.1126/sciimmunol.aax5430] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 12/05/2019] [Indexed: 12/13/2022]
Abstract
During industrialization, humans have been exposed to increasing numbers of foreign chemicals. Failure of the immune system to tolerate drugs, cosmetics, and other skin products causes allergic contact dermatitis, a T cell-mediated disease with rising prevalence. Models of αβ T cell response emphasize T cell receptor (TCR) contact with peptide-MHC complexes, but this model cannot readily explain activation by most contact dermatitis allergens, which are nonpeptidic molecules. We tested whether CD1a, an abundant MHC I-like protein in human skin, mediates contact allergen recognition. Using CD1a-autoreactive human αβ T cell clones to screen clinically important allergens present in skin patch testing kits, we identified responses to balsam of Peru, a tree oil widely used in cosmetics and toothpaste. Additional purification identified benzyl benzoate and benzyl cinnamate as antigenic compounds within balsam of Peru. Screening of structurally related compounds revealed additional stimulants of CD1a-restricted T cells, including farnesol and coenzyme Q2. Certain general chemical features controlled response: small size, extreme hydrophobicity, and chemical constraint from rings and unsaturations. Unlike lipid antigens that protrude to form epitopes and contact TCRs, the small size of farnesol allows sequestration deeply within CD1a, where it displaces self-lipids and unmasks the CD1a surface. These studies identify molecular connections between CD1a and hypersensitivity to consumer products, defining a mechanism that could plausibly explain the many known T cell responses to oily substances.
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Affiliation(s)
- Sarah Nicolai
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Marcin Wegrecki
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia
| | - Tan-Yun Cheng
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Elvire A Bourgeois
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Rachel N Cotton
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jacob A Mayfield
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Gwennaëlle C Monnot
- Columbia University Vagelos College of Physicians and Surgeons, Department of Dermatology, New York, NY 10032, USA
| | - Jérôme Le Nours
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia
| | - Ildiko Van Rhijn
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jamie Rossjohn
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia.,Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - D Branch Moody
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Annemieke de Jong
- Columbia University Vagelos College of Physicians and Surgeons, Department of Dermatology, New York, NY 10032, USA.
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82
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83
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Lee S, Jegal H, Bong SK, Yoon KN, Park NJ, Shin MS, Yang MH, Kim YK, Kim SN. Anti-Atopic Effect of Acorn Shell Extract on Atopic Dermatitis-Like Lesions in Mice and Its Active Phytochemicals. Biomolecules 2019; 10:E57. [PMID: 31905797 PMCID: PMC7023073 DOI: 10.3390/biom10010057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/23/2019] [Accepted: 12/26/2019] [Indexed: 01/05/2023] Open
Abstract
To investigate the potential effects of acorn shells on atopic dermatitis (AD), we utilized oxazolone (OX)- or 2,4-dinitrochlorobenzene (DNCB)-induced AD-like lesion mouse models. Our research demonstrates that Acorn shell extract (ASE) improved the progression of AD-like lesions, including swelling, which were induced by oxazolone on Balb/c mouse ears. Additionally, ASE significantly decreased the ear thickness (OX: 0.42 ± 0.01 mm, OX-ASE: 0.32 ± 0.02 mm) and epidermal thickness (OX: 75.3 ± 32.6 µm, OX-ASE: 46.1 ± 13.4 µm). The continuous DNCB-induced AD mouse model in SKH-1 hairless mice demonstrated that ASE improved AD-like symptoms, including the recovery of skin barrier dysfunction, Immunoglobulin E hyperproduction (DNCB: 340.1 ± 66.8 ng/mL, DNCB-ASE: 234.8 ± 32.9 ng/mL) and an increase in epidermal thickness (DNCB: 96.4 ± 21.9 µm, DNCB-ASE: 52.4 ± 16.3 µm). In addition, we found that ASE suppressed the levels of AD-involved cytokines, such as Tumor Necrosis Factor α, IL-1β, IL-25 and IL-33 in both animal models. Furthermore, gallic acid and ellagic acid isolated from ASE suppressed β-hexosaminidase release and IL-4 expression in RBL-2H3 cells. The acorn shell and its active phytochemicals have potential as a new remedy for the improvement of atopic dermatitis and other inflammatory diseases.
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Affiliation(s)
- Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam 13120, Korea;
| | - Hyun Jegal
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung 25451, Korea; (H.J.); (S.-K.B.); (K.-N.Y.); (N.-J.P.)
| | - Sim-Kyu Bong
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung 25451, Korea; (H.J.); (S.-K.B.); (K.-N.Y.); (N.-J.P.)
| | - Kyeong-No Yoon
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung 25451, Korea; (H.J.); (S.-K.B.); (K.-N.Y.); (N.-J.P.)
| | - No-June Park
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung 25451, Korea; (H.J.); (S.-K.B.); (K.-N.Y.); (N.-J.P.)
| | - Myoung-Sook Shin
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea;
| | - Min Hye Yang
- College of Pharmacy, Pusan National University, Busan 46241, Korea;
| | - Yong Kee Kim
- College of Pharmacy, Sookmyung Women′s University, Seoul 04610, Korea
| | - Su-Nam Kim
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung 25451, Korea; (H.J.); (S.-K.B.); (K.-N.Y.); (N.-J.P.)
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84
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Roach KA, Stefaniak AB, Roberts JR. Metal nanomaterials: Immune effects and implications of physicochemical properties on sensitization, elicitation, and exacerbation of allergic disease. J Immunotoxicol 2019; 16:87-124. [PMID: 31195861 PMCID: PMC6649684 DOI: 10.1080/1547691x.2019.1605553] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 03/15/2019] [Accepted: 04/05/2019] [Indexed: 12/25/2022] Open
Abstract
The recent surge in incorporation of metallic and metal oxide nanomaterials into consumer products and their corresponding use in occupational settings have raised concerns over the potential for metals to induce size-specific adverse toxicological effects. Although nano-metals have been shown to induce greater lung injury and inflammation than their larger metal counterparts, their size-related effects on the immune system and allergic disease remain largely unknown. This knowledge gap is particularly concerning since metals are historically recognized as common inducers of allergic contact dermatitis, occupational asthma, and allergic adjuvancy. The investigation into the potential for adverse immune effects following exposure to metal nanomaterials is becoming an area of scientific interest since these characteristically lightweight materials are easily aerosolized and inhaled, and their small size may allow for penetration of the skin, which may promote unique size-specific immune effects with implications for allergic disease. Additionally, alterations in physicochemical properties of metals in the nano-scale greatly influence their interactions with components of biological systems, potentially leading to implications for inducing or exacerbating allergic disease. Although some research has been directed toward addressing these concerns, many aspects of metal nanomaterial-induced immune effects remain unclear. Overall, more scientific knowledge exists in regards to the potential for metal nanomaterials to exacerbate allergic disease than to their potential to induce allergic disease. Furthermore, effects of metal nanomaterial exposure on respiratory allergy have been more thoroughly-characterized than their potential influence on dermal allergy. Current knowledge regarding metal nanomaterials and their potential to induce/exacerbate dermal and respiratory allergy are summarized in this review. In addition, an examination of several remaining knowledge gaps and considerations for future studies is provided.
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Affiliation(s)
- Katherine A Roach
- a Allergy and Clinical Immunology Branch (ACIB) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
- b School of Pharmacy , West Virginia University , Morgantown , WV , USA
| | - Aleksandr B Stefaniak
- c Respiratory Health Division (RHD) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
| | - Jenny R Roberts
- a Allergy and Clinical Immunology Branch (ACIB) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
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85
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Prediction of the allergic mechanism of haptens via a reaction-substructure-compound-target-pathway network system. Toxicol Lett 2019; 317:68-81. [DOI: 10.1016/j.toxlet.2019.09.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/30/2019] [Accepted: 09/25/2019] [Indexed: 11/24/2022]
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86
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Moussallieh F, Moss E, Elbayed K, Lereaux G, Tourneix F, Lepoittevin J. Modifications induced by chemical skin allergens on the metabolome of reconstructed human epidermis: A pilot high‐resolution magic angle spinning nuclear magnetic resonance study. Contact Dermatitis 2019; 82:137-146. [DOI: 10.1111/cod.13415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/16/2019] [Accepted: 10/14/2019] [Indexed: 12/26/2022]
Affiliation(s)
| | - Eric Moss
- Institute of ChemistryCNRS UMR 7177 and University of Strasbourg Strasbourg France
| | - Karim Elbayed
- Laboratoire des Sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube)CNRS UMR 7357 and University of Strasbourg Strasbourg France
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87
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Steinritz D, Lang S, Popp T, Siegert M, Rothmiller S, Kranawetvogl A, Schmidt A, John H, Gudermann T, Thiermann H, Kehe K. Skin sensitizing effects of sulfur mustard and other alkylating agents in accordance to OECD guidelines. Toxicol Lett 2019; 314:172-180. [PMID: 31404593 DOI: 10.1016/j.toxlet.2019.07.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/09/2019] [Accepted: 07/20/2019] [Indexed: 11/28/2022]
Abstract
Vesicants cause a multitude of cutaneous reactions like erythema, blisters and ulcerations. After exposure to sulfur mustard (SM) and related compounds, patients present dermal symptoms typically known for chemicals categorized as skin sensitizer (e.g. hypersensitivity and flare-up phenomena). However, although some case reports led to the assumption that SM and other alkylating compounds represent sensitizers, a comprehensive investigation of SM-triggered immunological responses has not been conducted so far. Based on a well-structured system of in chemico and in vitro test methods, the Organization for Economic Co-operation and Development (OECD) established procedures to categorize agents on their skin sensitizing abilities. In this study, the skin sensitizing potential of SM and three related alkylating agents (AAs) was assessed following the OECD test guidelines. Besides SM, investigated AAs were chlorambucil (CHL), nitrogen mustard (HN3) and 2-chloroethyl ethyl sulfide (CEES). The methods are described in detail in the EURL ECVAM DataBase service on ALternative Methods to animal experimentation (DB-ALM). In accordance to OECD recommendations, skin sensitization is a pathophysiological process starting with a molecular initiating step and ending with the in vivo outcome of an allergic contact dermatitis. This concept is called adverse outcome pathway (AOP). An AOP links an adverse outcome to various key events which can be assayed by established in chemico and in vitro test methods. Positive outcome in two out of three key events indicates that the chemical can be categorized as a skin sensitizer. In this study, key event 1 "haptenation" (covalent modification of epidermal proteins), key event 2 "activation of epidermal keratinocytes" and key event 3 "activation of dendritic cells" were investigated. Covalent modification of epidermal proteins measured by using the DPRA-assay provided distinct positive results for all tested substances. Same outcome was seen in the KeratinoSens assay, investigating the activation of epidermal keratinocytes. The h-CLAT assay performed to determine the activation of dendritic cells provided positive results for SM and CEES but not for CHL and HN3. Altogether, following OECD requirements, our results suggest the classification of all investigated substances as skin sensitizers. Finally, a tentative AOP for SM-induced skin sensitization is suggested.
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Affiliation(s)
- Dirk Steinritz
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany; Walther-Straub-Institute of Pharmacology and Toxicology, LMU Munich, 80336 Munich, Germany.
| | - Simon Lang
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany
| | - Tanja Popp
- Walther-Straub-Institute of Pharmacology and Toxicology, LMU Munich, 80336 Munich, Germany; Bundeswehr Institute of Radiobiology, 80937, Munich, Germany
| | - Markus Siegert
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany; Department of Chemistry, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Simone Rothmiller
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany
| | | | - Annette Schmidt
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany; Faculty of Human Sciences, Bundeswehr University, 85579, Neubiberg, Germany
| | - Harald John
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany
| | | | - Horst Thiermann
- Bundeswehr Institute of Pharmacology and Toxicology, 80937, Munich, Germany
| | - Kai Kehe
- Walther-Straub-Institute of Pharmacology and Toxicology, LMU Munich, 80336 Munich, Germany; Bundeswehr Medical Service Academy, 80937, Munich, Germany
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88
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Tagka A, Stratigos A, Lambrou GI, Nicolaidou E, Katsarou A, Chatziioannou A. Prevalence of contact dermatitis in the Greek population: A retrospective observational study. Contact Dermatitis 2019; 81:460-462. [PMID: 31347179 DOI: 10.1111/cod.13364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/19/2019] [Accepted: 07/24/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Anna Tagka
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandros Stratigos
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Athens, Greece
| | - Electra Nicolaidou
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandra Katsarou
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Argyro Chatziioannou
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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89
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Mertl E, Riegel E, Glück N, Ettenberger-Bornberg G, Lin G, Auer S, Haller M, Wlodarczyk A, Steurer C, Kirchnawy C, Czerny T. A dual luciferase assay for evaluation of skin sensitizing potential of medical devices. Mol Biol Rep 2019; 46:5089-5102. [DOI: 10.1007/s11033-019-04964-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/02/2019] [Indexed: 10/26/2022]
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90
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Shi HJ, Song HB, Gao Q, Si JW, Zou Q. Combination of oxymatrine and diammonium glycyrrhizinate significantly mitigates mice allergic contact dermatitis induced by dinitrofluorobenzene. Exp Biol Med (Maywood) 2019; 244:1111-1119. [PMID: 31342769 DOI: 10.1177/1535370219864895] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
This study investigated the safety and effect of oxymatrine (OMT) and/or diammonium glycyrrhizinate (DG) on allergic contact dermatitis (ACD) induced by 1-fluoro-2,4-dinitrofluorobenzene (DNFB) in ICR mice. Mice were topically smeared with vehicle (control) or DNFB on their ear and skin to induce ACD. The mice were randomized and injected with saline as the model, treated intraperitoneally with dexamethasone (DEX), 45 or 90 mg·kg−1 OMT and/or DG daily beginning one day post the first smearing for two weeks. The body weights, the severity of ear and skin inflammation, the levels of serum IgE, IL-4, and IFNγ, creatinine and urea as well as plasma sodium and potassium in individual mice were measured. In comparison with the control group, the model group did not change the body weights, but developed severe skin and ear inflammation with increased ear thickness, accompanied by many inflammatory infiltrates in the lesions and high levels of serum IgE, IL-4, and IFNγ. Combination of OMT and DG prevented the OMT- or DG-altered body weights in mice. While treatment with either OMT or DG moderately reduced the skin and ear inflammation, their thickness and inflammatory infiltrates, combination of OMT and DG further significantly increased their anti-inflammatory effects in mice. A similar pattern of inhibitory effect on the levels of serum IgE, IL-4, and IFNγ was observed in the different groups of mice. Combination of OMT and DG also prevented the OMT-, DG-, or DEX-altered plasma sodium or potassium levels in mice. Therefore, combination of OMT and DG significantly increased anti-inflammatory effects on ACD induced by DNFB in mice and attenuated DG- or OMT-related adverse effects. Impact statement Diammonium glycyrrhizinate (DG) and oxymatrine (OMT) have similar anti-inflammatory, anti-allergic, anti-tumor, immunomodulatory, and other pharmacological properties. Our previous study has shown that when DG and OMT are combined, DG can attenuate both high-dose (347.44 mg·kg−1) and regular-dose (90 mg·kg−1) OMT-induced mortality and adverse effects (such as body weight loss and hyponatremia). Furthermore, OMT can similarly attenuate the adverse effects (such as body weight gain, hypernatremia, and hypokalemia) induced by regular dose (90 mg·kg−1) of DG. Accordingly, we tested whether combination of OMT and DG would increase anti-inflammatory activities and reduce their adverse effect in a mouse model of allergic contact dermatitis (ACD) induced by 1-fluoro-2,4-dinitrofluorobenzene (DNFB). Our findings indicated that combination of OMT and DG significantly increased anti-inflammatory effects on ACD induced by DNFB in ICR mice and attenuated adverse effects of DG or OMT alone.
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Affiliation(s)
- Hui-Juan Shi
- Department of Dermatovenereology, Ningxia Medical University General Hospital, Yinchuan 750004, China
| | - Hong-Bin Song
- Department of Dermatology, Chinese PLA General Hospital, Beijing 100853, China
| | - Qiong Gao
- Department of Dermatovenereology, Ningxia Medical University General Hospital, Yinchuan 750004, China
| | - Jia-Wei Si
- Department of Clinical Medicine, Ningxia Medical University, Yinchuan 750004, China
| | - Qian Zou
- Department of Clinical Medicine, Ningxia Medical University, Yinchuan 750004, China
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91
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Schutte RJ, Zhang X, An N, Ostrov DA, Vukmanović S. Molecular docking predictions of fragrance binding to human leukocyte antigen molecules. Contact Dermatitis 2019; 81:174-183. [PMID: 30957232 DOI: 10.1111/cod.13283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Over 4000 small chemicals have been identified as allergens capable of inducing skin sensitization. Many sensitizers are hypothesized to act as haptens producing novel antigens, which can be presented to T cells by human leukocyte antigens (HLAs). Recent studies suggest that some chemical allergens use hapten-independent mechanisms. OBJECTIVE To determine whether molecular docking can identify HLA molecules that bind skin-sensitizing chemical allergens. METHODS Structural models of HLA molecules were used as the basis for molecular docking of 22 chemical allergens. Allergens predicted to bind HLA-B*57:01 were tested for their ability to stimulate T cells by the use of proliferation and interferon-gamma enzyme-linked immunospot assays. RESULTS Chemical allergens that did not satisfy the criteria for hapten activity in vitro were predicted to bind more strongly to common HLA isoforms than those with known hapten activity. HLA-B*57:01, which is an HLA allele required for drug hypersensitivity reactions, was predicted to bind several allergens, including benzyl benzoate, benzyl cinnamate, and benzyl salicylate. In in vitro T cell stimulation assays, benzyl salicylate and benzyl cinnamate were found to stimulate T cell responses from HLA-B*57:01 carriers. CONCLUSIONS These data suggest that small-molecule skin sensitizers have the potential to interact with HLA, and show that T cell-based in vitro assays may be used to evaluate the immunogenicity of skin-sensitizing chemicals.
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Affiliation(s)
- Ryan J Schutte
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Xiaojuan Zhang
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Nan An
- Division of Cosmetics, Office of Cosmetics and Colors, CFSAN, FDA, College Park, Maryland
| | - David A Ostrov
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Stanislav Vukmanović
- Division of Cosmetics, Office of Cosmetics and Colors, CFSAN, FDA, College Park, Maryland
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Frings VG, Müller D, Storz G, Rossi A, Sennefelder H, Adam C, Goebeler M, Groeber-Becker FK, Schmidt M. Improved metal allergen reactivity of artificial skin models by integration of Toll-like receptor 4-positive cells. Contact Dermatitis 2019; 81:254-261. [PMID: 31198997 DOI: 10.1111/cod.13336] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 05/14/2019] [Accepted: 06/12/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Reconstructed human epidermis (RhE) is widely used to replace animal models in order to assess the proinflammatory and allergenic effects of chemicals. Unfortunately, RhE lacks proinflammatory responsiveness for metal haptens, which are the most prevalent human contact allergens, raising concerns about its reliability for predicting skin allergens. OBJECTIVES To investigate whether this limitation of RhE might be attributable to a lack of functional expression of Toll-like receptor 4 (TLR4), which governs proinflammatory sensitivity to nickel and cobalt. MATERIALS AND METHODS RhE, dendritic cell (DC)-containing RhE and full-thickness skin equivalent (FTSE) were compared regarding their proinflammatory responsiveness to metal allergens. RESULTS The incorporation of dermal fibroblasts was sufficient to confer metal sensitivity to RhE. Unlike keratinocytes, normal human fibroblasts expressed high levels of TLR4 mRNA and induced interleukin-8 expression upon stimulation with nickel or cobalt. Consistently, dermal isolates from FTSE expressed considerable amounts of TLR4 mRNA, whereas RhE or epidermis isolated from FTSE, normal human epidermis or inflamed human epidermis failed to express TLR4. Similarly, co-culture with TLR4-positive DCs bestowed RhE with proinflammatory responsiveness to metals. CONCLUSION Our data suggest that FTSE or DC/RhE co-culture models can circumvent the shortcomings of RhE assays, and combine the benefits of complex and monoculture-based test systems in a single assay.
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Affiliation(s)
- Verena G Frings
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Damaris Müller
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Gabriel Storz
- Department of Tissue Engineering and Regenerative Medicine (TERM), University Hospital Würzburg, Würzburg, Germany
| | - Angela Rossi
- Translational Center for Regenerative Therapies, Fraunhofer Institute for Silicate Research, Würzburg, Germany
| | - Helga Sennefelder
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Christian Adam
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Matthias Goebeler
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Florian K Groeber-Becker
- Translational Center for Regenerative Therapies, Fraunhofer Institute for Silicate Research, Würzburg, Germany.,Department of Tissue Engineering and Regenerative Medicine (TERM), University Hospital Würzburg, Würzburg, Germany
| | - Marc Schmidt
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
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93
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Imiquimod enhances DNFB mediated contact hypersensitivity in mice. Int Immunopharmacol 2019; 72:284-291. [DOI: 10.1016/j.intimp.2019.04.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/22/2019] [Accepted: 04/12/2019] [Indexed: 11/30/2022]
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94
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Kavasi RM, Berdiaki A, Spyridaki I, Papoutsidakis A, Corsini E, Tsatsakis A, Tzanakakis GN, Nikitovic D. Contact allergen (PPD and DNCB)-induced keratinocyte sensitization is partly mediated through a low molecular weight hyaluronan (LMWHA)/TLR4/NF-κB signaling axis. Toxicol Appl Pharmacol 2019; 377:114632. [PMID: 31226360 DOI: 10.1016/j.taap.2019.114632] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 06/06/2019] [Accepted: 06/17/2019] [Indexed: 12/12/2022]
Abstract
Allergic contact dermatitis (ACD) is caused by topical exposure to chemical allergens. Keratinocytes play a key role in innate immunity, as well as in ACD progression. The transmembrane Toll-like receptor 4 (TLR4), strongly implicated in skin inflammation, has the ability to bind Damage Associated Molecular Patterns (DAMPs), like Low Molecular Weight Hyaluronan (LMWHA). Previously, we had determined that p-phenylenediamine (PPD) and 2,4-dinitrochlorobenzene (DNCB) modulate keratinocyte HA deposition in a manner correlated to their sensitization. In the present study, we aimed to investigate putative co-operation of HA and TLR4 in the process of PPD and DNCB-induced keratinocyte activation. Contact sensitizers were shown to significantly increase the expression of Hyaluronan Synthases (HAS) and TLR4 in NCTC2544 human keratinocytes, as demonstrated by western blot and Real-Time PCR. These data, in correlation to earlier shown enhanced HA degradation suggest that the contact sensitizers facilitate HA turnover of keratinocytes and increase the release of pro-inflammatory, LMWHA fragments. Treatment with exogenous LMWHA enhanced TLR4, HAS levels and Nuclear factor-kappa beta (NF-κΒ) activation. PPD, DNCB and LMWHA-effects were shown to be partly executed through TLR4 downstream signaling as shown by Real-Time, western blot, siRNA and confocal microscopy approaches. Specifically, PPD and DNCB stimulated the activation of the TLR4 downstream mediator NF-κB. Therefore, the shown upregulation of TLR4 expression is suggested to further facilitate the release of endogenous, bioactive HA fragments and sustain keratinocyte activation. In conclusion, keratinocyte contact allergen-dependent sensitization is partly mediated through a LMWHA/TLR4/ NF-κB signaling axis.
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Affiliation(s)
- Rafaela-Maria Kavasi
- Laboratory of Anatomy-Histology-Embryology, School of Medicine, University of Crete, Heraklion, Greece
| | - Aikaterini Berdiaki
- Laboratory of Anatomy-Histology-Embryology, School of Medicine, University of Crete, Heraklion, Greece
| | - Ioanna Spyridaki
- Laboratory of Anatomy-Histology-Embryology, School of Medicine, University of Crete, Heraklion, Greece
| | - Antonis Papoutsidakis
- Laboratory of Anatomy-Histology-Embryology, School of Medicine, University of Crete, Heraklion, Greece
| | - Emanuela Corsini
- Laboratory of Toxicology, ESP, Università degli Studi di Milano, Italy
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, University of Crete, Heraklion, Greece
| | - George N Tzanakakis
- Laboratory of Anatomy-Histology-Embryology, School of Medicine, University of Crete, Heraklion, Greece
| | - Dragana Nikitovic
- Laboratory of Anatomy-Histology-Embryology, School of Medicine, University of Crete, Heraklion, Greece.
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95
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Di P, Yin Y, Jiang C, Cai Y, Li W, Tang Y, Liu G. Prediction of the skin sensitising potential and potency of compounds via mechanism-based binary and ternary classification models. Toxicol In Vitro 2019; 59:204-214. [PMID: 31028860 DOI: 10.1016/j.tiv.2019.01.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 12/28/2018] [Accepted: 01/10/2019] [Indexed: 10/26/2022]
Abstract
Skin sensitisation, one of the most frequent forms of human immune toxicity, is authenticated to be a significant endpoint in the field of drug discovery and cosmetics. Due to the drawbacks of traditional animal testing methods, in silico methods have advanced to study skin sensitisation. In this study, mechanism-based binary and ternary classification models were constructed with a comprehensive data set. 1007 compounds were collected to develop five series of local and global models based on mechanisms. In each series, compounds were classified into five groups according to EC3 values, and applied as training sets, test sets and external validation sets. For each of the five series, 81 binary classification models and 81 ternary classification models were acquired via 9 molecular fingerprints and 9 machine learning methods using a novel KNIME workflow. Meanwhile, the applicability domains for the best 10 models were figured out to certify the rationality of prediction effect. In addition, 8 toxic substructures probably causing skin sensitisation were identified to speculate whether a compound is a skin sensitiser. The mechanism-based prediction models and the toxic substructures can be applied to predict the skin sensitising potential and potency of compounds.
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Affiliation(s)
- Peiwen Di
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yongmin Yin
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Changsheng Jiang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yingchun Cai
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Weihua Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yun Tang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Guixia Liu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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96
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Meixiong J, Anderson M, Limjunyawong N, Sabbagh MF, Hu E, Mack MR, Oetjen LK, Wang F, Kim BS, Dong X. Activation of Mast-Cell-Expressed Mas-Related G-Protein-Coupled Receptors Drives Non-histaminergic Itch. Immunity 2019; 50:1163-1171.e5. [PMID: 31027996 DOI: 10.1016/j.immuni.2019.03.013] [Citation(s) in RCA: 206] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 10/24/2018] [Accepted: 03/14/2019] [Indexed: 11/28/2022]
Abstract
Classical itch studies have focused on immunoglobulin E (IgE)-mediated mast cell activation and histamine release. Recently, members of the Mas-related G-protein-coupled receptor (Mrgpr) family have been identified as mast cell receptors, but their role in itch is unclear. Here, we report that mast cell activation via Mrgprb2 evoked non-histaminergic itch in mice independently of the IgE-Fc epsilon RI (FcεRI)-histamine axis. Compared with IgE-FcεRI stimulation, Mrgprb2 activation of mast cells was distinct in both released substances (histamine, serotonin, and tryptase) and the pattern of activated itch-sensory neurons. Mrgprb2 deficiency decreased itch in multiple preclinical models of allergic contact dermatitis (ACD), a pruritic inflammatory skin disorder, and both mast cell number and PAMP1-20 concentrations (agonist of the human Mrgprb2 homolog, MRGPRX2) were increased in human ACD skin. These findings suggest that this pathway may represent a therapeutic target for treating ACD and mast-cell-associated itch disorders in which antihistamines are ineffective.
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Affiliation(s)
- James Meixiong
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Michael Anderson
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Nathachit Limjunyawong
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Mark F Sabbagh
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Eric Hu
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Madison R Mack
- Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Dermatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Landon K Oetjen
- Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Dermatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Fang Wang
- Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Dermatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Brian S Kim
- Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Dermatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Xinzhong Dong
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Howard Hughes Medical Institute.
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97
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Cornell EM, Janetos TM, Xu S. Time for a makeover-cosmetics regulation in the United States. J Cosmet Dermatol 2019; 18:2041-2047. [PMID: 30950176 DOI: 10.1111/jocd.12886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 10/21/2018] [Accepted: 10/25/2018] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Cosmetics and personal care products are ubiquitous. Consumer pressure arising from recent episodes of products found to be unsafe has led to new policy proposals to modernize cosmetics regulation in the United States. METHODS We reviewed contemporary cosmetics regulation and collected major past and current policy proposals relating to cosmetics regulation with a focus on public health controversies. RESULTS Under a structure originally established in 1938 that places regulation of cosmetics under the Food and Drug Administration (FDA), cosmetics manufacturers in the United States are not required to register their products or forward consumer complaints to the FDA, leading to broad under-reporting of adverse events. The FDA has limited authority to mandate product recalls. The existing FDA database system that collects adverse events related to cosmetics has limited public health utility. Current proposals for new cosmetics regulations seek to establish better systems for data collection and mandatory manufacturer registrations funded by cosmetic manufacturers. Additional policy changes could include a premarket review process for cosmeceuticals (cosmetics that make drug-like claims) and more advanced real-world data safety monitoring tools. CONCLUSIONS With continued consumer concern and several recent cosmetic-related public health controversies, the FDA should be given more resources and broader authority to protect consumer safety.
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Affiliation(s)
- Erika M Cornell
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Timothy M Janetos
- Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Shuai Xu
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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98
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A retrospective review of dupilumab for atopic dermatitis patients with allergic contact dermatitis. J Am Acad Dermatol 2019; 80:1166-1167. [DOI: 10.1016/j.jaad.2018.12.048] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 12/11/2018] [Accepted: 12/18/2018] [Indexed: 11/21/2022]
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99
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Experience in patch testing: A 6-year retrospective review from a single academic allergy practice. Ann Allergy Asthma Immunol 2019; 122:502-507. [PMID: 30851460 DOI: 10.1016/j.anai.2019.02.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 02/10/2019] [Accepted: 02/28/2019] [Indexed: 01/06/2023]
Abstract
BACKGROUND Patch testing is the "gold standard" to identify culprit allergen(s) causing allergic contact dermatitis (ACD), but there are limited studies of patch testing from allergy practice settings. OBJECTIVE We sought to explore patch test findings in a large academic allergy practice, including patch testing results, history of atopy, location of dermatitis, and referral source. We also wanted to determine whether patch testing using an extended panel, such as the North American screening series, compared with a limited series, such as the Thin-Layer Rapid-Use Epicutaneous (T.R.U.E.) Test, increased the sensitivity. METHODS A retrospective chart review was conducted of patients referred for patch testing over a 6-year period. RESULTS A total of 585 patients (mean age 48.7 years, 71.6 % female) underwent patch testing over the 6-year period, of which 369 (63%) had a positive test. Of those who tested positive, 202 (55%) reported a history of atopy. The extremities were the most commonly involved site, followed by the head/neck and trunk. The 5 most common positive allergens were nickel sulfate, gold sodium thiosulfate, methylchloroisothiazolinone, thimerosal, and bacitracin. Three hundred fourteen (53.6%) patients were positive to at least 1 allergen on TRUE testing. Extended screening series identified an additional 10.8% of patients with positive tests who were negative to T.R.U.E. test allergens. CONCLUSION Patch testing is a valuable diagnostic tool for the practicing allergist and provides early identification of culprit allergens in ACD. Performing an extended screening series such as the North American Contact Dermatitis Group (NACDG) or supplemental panel of allergens increased sensitivity when compared with a limited series.
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100
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