1
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Chicharro P, Munera-Campos M, Zaragoza-Ninet V, Giménez-Arnau A, González-Pérez R, Miquel-Miquel FJ, Córdoba-Guijarro S, Sanz-Sánchez T, Ruiz-González I, Silvestre-Salvador JF, Serra-Baldrich E, Borrego L, Pastor-Nieto MA, Ortiz de Frutos FJ, Mercader-García P, Heras-Mendaza F, Fernández-Redondo V, Rodríguez-Serna M, Hervella-García M, Carrascosa JM, Gallego-Descalzo MA, García-Doval I, Sánchez-Pérez J. Allergic contact dermatitis in adults with and without atopic dermatitis: Evaluation of the Spanish Contact Dermatitis Registry (REIDAC). Contact Dermatitis 2024. [PMID: 39138883 DOI: 10.1111/cod.14672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/26/2024] [Accepted: 07/28/2024] [Indexed: 08/15/2024]
Abstract
BACKGROUND Atopic dermatitis (AD) and allergic contact dermatitis (ACD) are inflammatory skin conditions whose association is not clearly defined. OBJECTIVES To identify differences in ACD profile between patients with and without AD among those referred for patch testing. Additionally, to determine the prevalence of sensitisation to standard Spanish contact allergens in both groups. METHODS We analysed two groups (AD and non-AD) within the Spanish Registry of Research in Contact Dermatitis and Cutaneous Allergy (REIDAC). Contact allergy, clinical relevance and epidemiological data were compared between them. RESULTS A total of 5055 patients were included. Among them, 23% (1168) had a history or final diagnosis of AD. At least one positive reaction was seen in 468 (40%) of AD patients and 1864 (48%) of non-AD patients. In both groups, the most common positive reactions were to nickel sulphate, methylchloroisothiazolinone/methylisothiazolinone and cobalt chloride. Age-adjusted OR for sensitisation to nickel sulphate was 0.72 (95% CI: 0.61-0.86), indicating a decreased likelihood of sensitisation in AD patients compared to non-AD individuals. CONCLUSIONS We did not find an increased presence of ACD in patients with AD referred for patch testing, exhibiting similar profiles to non-AD population, except for a negative relationship between AD and sensitisation to nickel sulphate.
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Affiliation(s)
- P Chicharro
- Hospital Universitario de La Princesa, Madrid, Spain
| | - M Munera-Campos
- Hospital Universitario Germans Trias i Pujol, Barcelona, Spain
| | | | | | | | | | | | - T Sanz-Sánchez
- Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Spain
| | | | | | | | - L Borrego
- Complejo Hospitalario Universitario Insular Materno Infantil, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | | | | | | | | | | | | | | | - J M Carrascosa
- Hospital Universitario Germans Trias i Pujol, Barcelona, Spain
| | | | - I García-Doval
- Unidad de Investigación, Fundación Piel Sana, Madrid, Spain
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2
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Thein D, Maul JT, Schmid-Grendelmeier P, Thyssen JP, Egeberg A. Prevalence of ichthyoses in Denmark: a nationwide registry-based study. Br J Dermatol 2024; 191:305-306. [PMID: 38693762 DOI: 10.1093/bjd/ljae177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/05/2024] [Accepted: 04/18/2024] [Indexed: 05/03/2024]
Abstract
The results demonstrate a prevalence of 1.6 per 10 000 for all types of ichthyoses, based on large Danish national patient registries, including all patients with relevant diagnoses alive on 31 December 2021. A study of this size and depth has not been completed before but may still underestimate the prevalence and potential burden of the diseases.
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Affiliation(s)
- David Thein
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Denmark
| | | | | | - Jacob P Thyssen
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Alexander Egeberg
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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3
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Moosbrugger-Martinz V, Leprince C, Méchin MC, Simon M, Blunder S, Gruber R, Dubrac S. Revisiting the Roles of Filaggrin in Atopic Dermatitis. Int J Mol Sci 2022; 23:5318. [PMID: 35628125 PMCID: PMC9140947 DOI: 10.3390/ijms23105318] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/03/2022] [Accepted: 05/06/2022] [Indexed: 12/31/2022] Open
Abstract
The discovery in 2006 that loss-of-function mutations in the filaggrin gene (FLG) cause ichthyosis vulgaris and can predispose to atopic dermatitis (AD) galvanized the dermatology research community and shed new light on a skin protein that was first identified in 1981. However, although outstanding work has uncovered several key functions of filaggrin in epidermal homeostasis, a comprehensive understanding of how filaggrin deficiency contributes to AD is still incomplete, including details of the upstream factors that lead to the reduced amounts of filaggrin, regardless of genotype. In this review, we re-evaluate data focusing on the roles of filaggrin in the epidermis, as well as in AD. Filaggrin is important for alignment of keratin intermediate filaments, control of keratinocyte shape, and maintenance of epidermal texture via production of water-retaining molecules. Moreover, filaggrin deficiency leads to cellular abnormalities in keratinocytes and induces subtle epidermal barrier impairment that is sufficient enough to facilitate the ingress of certain exogenous molecules into the epidermis. However, although FLG null mutations regulate skin moisture in non-lesional AD skin, filaggrin deficiency per se does not lead to the neutralization of skin surface pH or to excessive transepidermal water loss in atopic skin. Separating facts from chaff regarding the functions of filaggrin in the epidermis is necessary for the design efficacious therapies to treat dry and atopic skin.
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Affiliation(s)
- Verena Moosbrugger-Martinz
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (V.M.-M.); (S.B.); (R.G.)
| | - Corinne Leprince
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Toulouse University, CNRS UMR5051, Inserm UMR1291, UPS, 31059 Toulouse, France; (C.L.); (M.-C.M.); (M.S.)
| | - Marie-Claire Méchin
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Toulouse University, CNRS UMR5051, Inserm UMR1291, UPS, 31059 Toulouse, France; (C.L.); (M.-C.M.); (M.S.)
| | - Michel Simon
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Toulouse University, CNRS UMR5051, Inserm UMR1291, UPS, 31059 Toulouse, France; (C.L.); (M.-C.M.); (M.S.)
| | - Stefan Blunder
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (V.M.-M.); (S.B.); (R.G.)
| | - Robert Gruber
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (V.M.-M.); (S.B.); (R.G.)
| | - Sandrine Dubrac
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria; (V.M.-M.); (S.B.); (R.G.)
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4
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Julander A, Rietz Liljedahl E, Korres de Paula H, Assarsson E, Engfeldt M, Littorin M, Shobana Anto C, Lidén C, Broberg K. Nickel penetration into stratum corneum in FLG null carriers - a human experimental study. Contact Dermatitis 2022; 87:154-161. [PMID: 35474514 PMCID: PMC9544599 DOI: 10.1111/cod.14137] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 11/21/2022]
Abstract
Background The filaggrin gene (FLG) plays a role in skin diseases, with the skin barrier function being impaired in FLG null carriers. The role of FLG status in relation to nickel penetration into the skin remains unclear. Objectives To elucidate the association between FLG status and nickel penetration into stratum corneum (SC) in individuals without self‐reported history of nickel allergy. Methods Forty participants (23 FLG wt and 17 FLG null) were exposed to a nickel solution (80 μg/cm2) which was applied onto 2 × 2 cm on their left forearm. After 4 h, the area was tape‐stripped with 10 consecutive tapes. Nickel in each tape was quantified using inductively coupled plasma mass spectrometry. Results The average recovered nickel dose was 35%–48%. A tendency towards lower recovery was seen in FLG null carriers compared to FLG wt carriers, and lower recovery in those with history of skin and/or respiratory symptoms compared to those without such history. This was however not statistically significant. Conclusion FLG null carriers had less nickel recovered by tape strips compared with FLG wt carriers and, compared with individuals without a history of skin and/or respiratory symptoms, indicating higher nickel penetration into SC for FLG null carriers, but further studies are needed.
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Affiliation(s)
- Anneli Julander
- Unit of Integrative Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Emelie Rietz Liljedahl
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Helena Korres de Paula
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Eva Assarsson
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Malin Engfeldt
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Margareta Littorin
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Christine Shobana Anto
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Carola Lidén
- Unit of Integrative Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.,Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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5
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Podobas EI, Gutowska-Owsiak D, Moretti S, Poznański J, Kulińczak M, Grynberg M, Gruca A, Bonna A, Płonka D, Frączyk T, Ogg G, Bal W. Ni 2+-Assisted Hydrolysis May Affect the Human Proteome; Filaggrin Degradation Ex Vivo as an Example of Possible Consequences. Front Mol Biosci 2022; 9:828674. [PMID: 35359602 PMCID: PMC8960189 DOI: 10.3389/fmolb.2022.828674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/31/2022] [Indexed: 01/28/2023] Open
Abstract
Deficiency in a principal epidermal barrier protein, filaggrin (FLG), is associated with multiple allergic manifestations, including atopic dermatitis and contact allergy to nickel. Toxicity caused by dermal and respiratory exposures of the general population to nickel-containing objects and particles is a deleterious side effect of modern technologies. Its molecular mechanism may include the peptide bond hydrolysis in X1-S/T-c/p-H-c-X2 motifs by released Ni2+ ions. The goal of the study was to analyse the distribution of such cleavable motifs in the human proteome and examine FLG vulnerability of nickel hydrolysis. We performed a general bioinformatic study followed by biochemical and biological analysis of a single case, the FLG protein. FLG model peptides, the recombinant monomer domain human keratinocytes in vitro and human epidermis ex vivo were used. We also investigated if the products of filaggrin Ni2+-hydrolysis affect the activation profile of Langerhans cells. We found X1-S/T-c/p-H-c-X2 motifs in 40% of human proteins, with the highest abundance in those involved in the epidermal barrier function, including FLG. We confirmed the hydrolytic vulnerability and pH-dependent Ni2+-assisted cleavage of FLG-derived peptides and FLG monomer, using in vitro cell culture and ex-vivo epidermal sheets; the hydrolysis contributed to the pronounced reduction in FLG in all of the models studied. We also postulated that Ni-hydrolysis might dysregulate important immune responses. Ni2+-assisted cleavage of barrier proteins, including FLG, may contribute to clinical disease associated with nickel exposure.
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Affiliation(s)
- Ewa Izabela Podobas
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- Medical Research Council Human Immunology Unit, National Institute for Health Research Oxford Biomedical Research Centre, Medical Research Council Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
- Institute of Genetics and Biotechnology, University of Warsaw, Warsaw, Poland
| | - Danuta Gutowska-Owsiak
- Medical Research Council Human Immunology Unit, National Institute for Health Research Oxford Biomedical Research Centre, Medical Research Council Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
- University of Gdansk, Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | - Sébastien Moretti
- SIB Swiss Institute of Bioinformatics, Vital-IT Team, Lausanne, Switzerland
| | - Jarosław Poznański
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Mariusz Kulińczak
- The Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Marcin Grynberg
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Aleksandra Gruca
- Institute of Informatics, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Gliwice, Poland
| | - Arkadiusz Bonna
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Dawid Płonka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Frączyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Graham Ogg
- Medical Research Council Human Immunology Unit, National Institute for Health Research Oxford Biomedical Research Centre, Medical Research Council Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
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6
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Mora-Fernández V, Mercader Garcia P, Borrego Hernando L, González Pérez R, Córdoba Guijarro S, Giménez Arnau A, Ruiz González I, Miquel Miquel F, Silvestre Salvador J, Ortiz de Frutos F, Sanz Sanchez T, Rodríguez Serna M, Fernández Redondo V, Sanchez Perez J, Heras Mendaza F, Serra Baldrich E, Zaragoza Ninet V, Pastor Nieto M, Hervella Garcia M, Garcia Doval I, Carrascosa J. Perfil epidemiológico, clínico, y alérgico en pacientes con dermatitis atópica y dermatitis de las manos. Evaluación del Registro Español de Dermatitis de Contacto (REIDAC). ACTAS DERMO-SIFILIOGRAFICAS 2022; 113:236-243. [DOI: 10.1016/j.ad.2021.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/27/2021] [Accepted: 10/04/2021] [Indexed: 11/30/2022] Open
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7
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Mora-Fernández V, Mercader Garcia P, Borrego Hernando L, González Pérez R, Córdoba Guijarro S, Giménez Arnau A, Ruiz González I, Miquel Miquel F, Silvestre Salvador J, Ortiz de Frutos F, Sanz Sanchez T, Rodríguez Serna M, Fernández Redondo V, Sanchez Perez J, Heras Mendaza F, Serra Baldrich E, Zaragoza Ninet V, Pastor Nieto M, Hervella Garcia M, Garcia Doval I, Carrascosa J. [Translated article] Epidemiological, Clinical, and Allergy Profile of Patients With Atopic Dermatitis and Hand Eczema: Evaluation of the Spanish Contact Dermatitis Registry (REIDAC). ACTAS DERMO-SIFILIOGRAFICAS 2022. [DOI: 10.1016/j.ad.2022.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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8
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Noë E, Huygens S, Morren MA, Garmyn M, Goossens A, Gilissen L. Contact allergy in a paediatric population observed in a tertiary referral centre in Belgium. Contact Dermatitis 2021; 86:3-8. [PMID: 34537955 DOI: 10.1111/cod.13975] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 09/03/2021] [Accepted: 09/15/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Contact allergy is increasingly recognized as being important in children with eczema. OBJECTIVES To retrospectively analyse the patch test results in children over the past 10 years, aiming to (1) evaluate demographic characteristics and lesion locations, (2) describe frequencies of positive patch test reactions, and (3) investigate the relationship with atopic dermatitis (AD). METHODS A total of 329 children were patch tested between January 2010 and December 2019 with the European (children) baseline series and/or other series, and the personal product(s) used. RESULTS A total of 119 (36%) children presented with at least one positive reaction. Children with AD had a higher prevalence of positive reactions compared with the non-AD group (P = .002), but without statistically significant difference regarding sensitization to more than one hapten (P = .39). The face (20.2%), hands (19.3%), feet (16.8%), arms (12.6%), and body folds (10.9%) were the most common sites of primary localizations. The most frequent contact allergens were nickel sulfate and linalool hydroperoxide (both 16%), limonene hydroperoxide (13.5%), and para-phenylenediamine (10.9%). No statistically significant difference for nickel sulfate was found between the AD and non-AD group (P = .20). CONCLUSIONS Contact allergy in children with eczema was frequently observed in our tertiary referral centre in Belgium as well, confirming the need for patch testing.
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Affiliation(s)
- Esther Noë
- Department of Dermatology, Contact Allergy Unit, University Hospitals of Leuven, Leuven, Belgium
| | - Sara Huygens
- Department of Dermatology, Contact Allergy Unit, University Hospitals of Leuven, Leuven, Belgium
| | - Marie-Anne Morren
- Unité de Dermatologie Pediatrique, Hôpital des Enfants CHUV Lausanne, Lausanne, Switzerland
| | - Marjan Garmyn
- Department of Dermatology, Contact Allergy Unit, University Hospitals of Leuven, Leuven, Belgium.,Department of Oncology, Laboratory of Dermatology, KU Leuven, Leuven, Belgium
| | - An Goossens
- Department of Dermatology, Contact Allergy Unit, University Hospitals of Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
| | - Liesbeth Gilissen
- Department of Dermatology, Contact Allergy Unit, University Hospitals of Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
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9
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Yüksel YT, Nørreslet LB, Thyssen JP. Allergic Contact Dermatitis in Patients with Atopic Dermatitis. CURRENT DERMATOLOGY REPORTS 2021. [DOI: 10.1007/s13671-021-00335-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Yılmaz Z, Özkaya E. Patch-test results in terms of the recently recommended allergens in children and adolescents: A retrospective cohort study over 22 years from Turkey. Contact Dermatitis 2021; 85:198-210. [PMID: 33759232 DOI: 10.1111/cod.13842] [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: 11/19/2020] [Revised: 03/06/2021] [Accepted: 03/21/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND A European pediatric patch-test series was suggested recently. OBJECTIVES To evaluate the patch-test results in children (<10-years-old) and adolescents (10- to 18-years-old) in Turkey, focusing on the clinical/occupational relevance and the diagnostic value of the recently suggested series. PATIENTS AND METHODS A retrospective cohort study on 317 consecutively patch-tested patients ≤18 years of age, between 1996 and 2017. RESULTS The contact sensitization rate was 46.1%. Allergic contact dermatitis (ACD) was diagnosed in 30.9%, comprising non-occupational (84.7%) and occupational (15.3%) ACD. Nickel was the leading allergen in almost every age group. Methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) was the clinically most relevant allergen, followed by p-phenylenediamine (PPD), ammonium persulfate, fragrance mix I, nickel sulfate, and mercury/mercury(II)amidochloride. Occupational ACD was most frequently seen in hairdresser apprentices (adolescents only) who were sensitized with PPD ± ammonium persulfate. ACD from MCI/MI increased to 5-fold, ammonium persulfate and mercurial compounds to 2-fold, and PPD to 1.7-fold after 2007. Almost one third of patients would be missed by testing only with the recommended allergens. CONCLUSIONS For patch testing in Turkish children and adolescents, we suggest additionally testing with ammonium persulfate, mercury/mercury(II)amidochloride, toluenesulfonamide formaldehyde resin, and polyethylene glycol, the latter as a marker for nitrofurazone allergy, in appropriate patients.
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Affiliation(s)
- Zeynep Yılmaz
- Department of Dermatology and Venereology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
- Clinic for Dermatology and Venereology, Boyabat 75th Year State Hospital, Sinop, Turkey
| | - Esen Özkaya
- Department of Dermatology and Venereology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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12
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Ulrich NH, Thyssen JP, Mizutani H, Nixon RL. Hand Eczema: Causative Factors, Diagnosis, Personal and Societal Consequences. Contact Dermatitis 2021. [DOI: 10.1007/978-3-030-36335-2_61] [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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13
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Goossens A, Morren MA. Contact Allergy in Children. Contact Dermatitis 2021. [DOI: 10.1007/978-3-030-36335-2_48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Ulrich NH, Thyssen JP, Mizutani H, Nixon RL. Hand Eczema: Causative Factors, Diagnosis, Personal and Societal Consequences. Contact Dermatitis 2020. [DOI: 10.1007/978-3-319-72451-5_61-2] [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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15
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Martin SF, Bonefeld CM. Mechanisms of Irritant and Allergic Contact Dermatitis. Contact Dermatitis 2020. [DOI: 10.1007/978-3-319-72451-5_59-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Lagrelius M, Wahlgren C, Bradley M, Melén E, Kull I, Bergström A, Lidén C. Filaggrin gene mutations in relation to contact allergy and hand eczema in adolescence. Contact Dermatitis 2019; 82:147-152. [DOI: 10.1111/cod.13444] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/21/2019] [Accepted: 11/27/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Maria Lagrelius
- Institute of Environmental Medicine, Karolinska Institutet Stockholm Sweden
- Region StockholmCentre for Occupational and Environmental Medicine Stockholm Sweden
| | - Carl‐Fredrik Wahlgren
- Dermatology Unit, Department of Medicine SolnaKarolinska Institutet Stockholm Sweden
- Karolinska University Hospital Stockholm Sweden
| | - Maria Bradley
- Dermatology Unit, Department of Medicine SolnaKarolinska Institutet Stockholm Sweden
- Karolinska University Hospital Stockholm Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet Stockholm Sweden
- Department of Clinical Science and EducationStockholm South General Hospital, Karolinska Institutet Stockholm Sweden
- Sachs' Children's Hospital Stockholm Sweden
| | - Inger Kull
- Department of Clinical Science and EducationStockholm South General Hospital, Karolinska Institutet Stockholm Sweden
- Sachs' Children's Hospital Stockholm Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet Stockholm Sweden
- Region StockholmCentre for Occupational and Environmental Medicine Stockholm Sweden
| | - Carola Lidén
- Institute of Environmental Medicine, Karolinska Institutet Stockholm Sweden
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Teo Y, McFadden JP, White IR, Lynch M, Banerjee P. Allergic contact dermatitis in atopic individuals: Results of a 30‐year retrospective study. Contact Dermatitis 2019; 81:409-416. [DOI: 10.1111/cod.13363] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 07/20/2019] [Accepted: 07/24/2019] [Indexed: 01/10/2023]
Affiliation(s)
- Ying Teo
- Department of DermatologyUniversity Hospital Southampton NHS Foundation Trust Southampton UK
- Department of Cutaneous AllergySt John's Institute of Dermatology, Guy's Hospital London UK
| | - John P. McFadden
- Department of Cutaneous AllergySt John's Institute of Dermatology, Guy's Hospital London UK
| | - Ian R. White
- Department of Cutaneous AllergySt John's Institute of Dermatology, Guy's Hospital London UK
| | - Magnus Lynch
- Department of Cutaneous AllergySt John's Institute of Dermatology, Guy's Hospital London UK
| | - Piu Banerjee
- Department of Cutaneous AllergySt John's Institute of Dermatology, Guy's Hospital London UK
- Department of DermatologyLewisham Hospital London UK
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18
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Milam EC, Jacob SE, Cohen DE. Contact Dermatitis in the Patient with Atopic Dermatitis. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2019; 7:18-26. [DOI: 10.1016/j.jaip.2018.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/05/2018] [Accepted: 11/05/2018] [Indexed: 12/20/2022]
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20
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Ulrich NH, Thyssen JP, Mizutani H, Nixon RL. Hand Eczema. Contact Dermatitis 2019. [DOI: 10.1007/978-3-319-72451-5_61-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Joensen UN, Jørgensen N, Thyssen JP, Szecsi PB, Stender S, Petersen JH, Andersson AM, Frederiksen H. Urinary excretion of phenols, parabens and benzophenones in young men: Associations to reproductive hormones and semen quality are modified by mutations in the Filaggrin gene. ENVIRONMENT INTERNATIONAL 2018; 121:365-374. [PMID: 30245359 DOI: 10.1016/j.envint.2018.09.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/11/2018] [Accepted: 09/11/2018] [Indexed: 05/21/2023]
Abstract
BACKGROUND The filaggrin gene (FLG) encodes an epidermal protein, filaggrin, which is important for normal skin barrier functions. We previously showed that FLG loss-of-function mutation carriers have a higher internal exposure to some non-persistent chemicals such as certain phthalates and parabens, suggesting increased trans-epidermal penetration. Several groups of non-persistent chemicals are suspected endocrine disrupters with potential to affect testicular function. OBJECTIVES To investigate associations between exposure to non-persistent chemicals and testicular function in young Danish men with and without FLG mutations. METHODS We measured urinary concentrations of bisphenol A (BPA) and other simple phenols, parabens, and UV filters including benzophenones (BP-1, BP-3 and 4-HBP) in men genotyped for FLG R501X, 2282del4, and R2447X loss-of-function mutations; in total 65 mutation carriers and 130 non-carriers (controls) were included. Outcomes were markers of testicular function, assessed by serum reproductive hormones and semen quality. RESULTS We found that associations between urinary chemical concentrations and outcomes were different in cases and controls. Within the group of FLG mutation carriers, higher urinary concentrations of BPA, BP-1 and BP-3 were associated with higher testosterone and estradiol serum levels and lower FSH. Similar trends in hormone levels were observed for FLG mutation carriers with measurable levels of 4-HBP compared to those who had no detectable levels of urinary 4-HBP. Furthermore, those in the highest urinary BPA quartile had lower sperm motility than those in the lower quartiles. None of these associations were evident in the control group. In the control group, however, lower sperm motility and sperm concentration were observed in the men with detectable urinary 4-HBP compared to the men non-detectable urinary 4-HBP. We found no association between any parabens and outcomes, nor for the other measured phenols or UV filters. CONCLUSIONS Associations between male reproductive health parameters and urinary levels of BPA and benzophenones such as BP-3, BP-1 and 4-HBP were observed in FLG mutation carriers but not in controls from the same study population. This difference between FLG mutation carriers and non-carriers is not explained solely by differences in exposure levels of the examined compounds as e.g. BPA and 4-HBP urinary levels did not differ between the two groups. We hypothesise that effects of exposure to these compounds may be modulated in FLG mutation carriers by either different levels of co-exposures or by route of uptake, with a higher fraction of the uptake by dermal uptake.
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Affiliation(s)
- Ulla Nordström Joensen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Niels Jørgensen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Jacob P Thyssen
- National Allergy Research Centre, Department of Dermatology and Allergy, Copenhagen University Hospital Gentofte, Copenhagen, Denmark
| | - Pal Bela Szecsi
- Department of Clinical Biochemistry, Copenhagen University Hospital Gentofte, Copenhagen, Denmark; Department of Clinical Biochemistry, Copenhagen University Hospital Holbæk, Holbæk, Denmark
| | - Steen Stender
- Department of Clinical Biochemistry, Copenhagen University Hospital Gentofte, Copenhagen, Denmark
| | - Jørgen Holm Petersen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Anna-Maria Andersson
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Hanne Frederiksen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
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Petersen TH, Jee MH, Gadsbøll AØ, Schmidt JD, Sloth JJ, Sonnenberg GF, Geisler C, Thyssen JP, Bonefeld CM. Mice with epidermal filaggrin deficiency show increased immune reactivity to nickel. Contact Dermatitis 2018; 80:139-148. [DOI: 10.1111/cod.13153] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/26/2018] [Accepted: 09/27/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Trine H. Petersen
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Mia H. Jee
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
- Department of Dermatology and AllergyNational Allergy Research Centre, Copenhagen University Hospital Gentofte Hellerup Denmark
| | - Anne‐Sofie Ø. Gadsbøll
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Jonas D. Schmidt
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Jens J. Sloth
- National Food InstituteTechnical University of Denmark Kongens Lyngby Denmark
| | | | - Carsten Geisler
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
| | - Jacob P. Thyssen
- Department of Dermatology and AllergyNational Allergy Research Centre, Copenhagen University Hospital Gentofte Hellerup Denmark
| | - Charlotte M. Bonefeld
- Department of Immunology and Microbiology, Faculty of Health and Medical SciencesUniversity of Copenhagen Copenhagen Denmark
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Ahlström MG, Midander K, Menné T, Lidén C, Johansen JD, Julander A, Thyssen JP. Nickel deposition and penetration into the stratum corneum after short metallic nickel contact: An experimental study. Contact Dermatitis 2018; 80:86-93. [DOI: 10.1111/cod.13136] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/30/2018] [Accepted: 09/03/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Malin G. Ahlström
- National Allergy Research Centre, Department of Dermatology and Allergy; Herlev and Gentofte Hospital, University of Copenhagen; Hellerup Denmark
| | - Klara Midander
- Unit of Work Environment Toxicology; Institute of Environmental Medicine, Karolinska Institutet; Stockholm Sweden
| | - Torkil Menné
- National Allergy Research Centre, Department of Dermatology and Allergy; Herlev and Gentofte Hospital, University of Copenhagen; Hellerup Denmark
| | - Carola Lidén
- Unit of Work Environment Toxicology; Institute of Environmental Medicine, Karolinska Institutet; Stockholm Sweden
| | - Jeanne D. Johansen
- National Allergy Research Centre, Department of Dermatology and Allergy; Herlev and Gentofte Hospital, University of Copenhagen; Hellerup Denmark
| | - Anneli Julander
- Unit of Work Environment Toxicology; Institute of Environmental Medicine, Karolinska Institutet; Stockholm Sweden
| | - Jacob P. Thyssen
- National Allergy Research Centre, Department of Dermatology and Allergy; Herlev and Gentofte Hospital, University of Copenhagen; Hellerup Denmark
- Department of Dermatology and Allergy; Herlev and Gentofte Hospital, University of Copenhagen; Hellerup Denmark
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Andersen YMF, Egeberg A, Hamann CR, Skov L, Gislason GH, Skaaby T, Linneberg A, Thyssen JP. Poor agreement in questionnaire-based diagnostic criteria for adult atopic dermatitis is a challenge when examining cardiovascular comorbidity. Allergy 2018; 73:923-931. [PMID: 29150853 DOI: 10.1111/all.13360] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND The association between atopic dermatitis (AD) and cardio-metabolic risk factors is not yet established. Furthermore, no validated questionnaire-based method of identifying adults with AD is currently available. OBJECTIVES To assess the cardio-metabolic risk in adults with a history of AD using 3 different questionnaire-based diagnostic criteria. METHODS We utilized data from a general population study including questionnaire data and objective measurements of 9656 Danish adults. To identify adults with a history of AD, we used a question regarding physician-diagnosed AD and 2 versions of the UK Working Party Diagnostic Criteria. Associations between AD status and cardio-metabolic endpoints were estimated using survey weighted logistic and linear regression analysis. RESULTS We identified 462 (4.8%) adults with self-reported physician-diagnosed AD, whereas 903 (9.4%) and 226 (2.3%) had AD according to the UK Working Party Criteria when at least 2 and 3of 4 minor criteria were fulfilled. The populations were not comparable in terms of occurrence of cardio-metabolic risk factors. For example, the prevalence of obesity was lower in participants with physician-diagnosed AD but overall higher in UK 2/4 and UK 3/4. CONCLUSION Due to the heterogeneity in the captured study populations in terms of the studied outcomes and absence of a gold standard, no conclusions regarding the cardio-metabolic risk in adults with AD in a general population could be made. This study serves as an example of the challenges that are often encountered in questionnaire-based epidemiologic studies and highlights the need of better definitions for this patient group.
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Affiliation(s)
- Y. M. F. Andersen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
- Copenhagen Research Group for Inflammatory Skin (CORGIS); Herlev and Gentofte Hospital; Hellerup Denmark
- Department of Cardiology, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
| | - A. Egeberg
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
- Copenhagen Research Group for Inflammatory Skin (CORGIS); Herlev and Gentofte Hospital; Hellerup Denmark
| | - C. R. Hamann
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
- Copenhagen Research Group for Inflammatory Skin (CORGIS); Herlev and Gentofte Hospital; Hellerup Denmark
- Department of Cardiology, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
| | - L. Skov
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
- Copenhagen Research Group for Inflammatory Skin (CORGIS); Herlev and Gentofte Hospital; Hellerup Denmark
| | - G. H. Gislason
- Department of Cardiology, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
- The Danish Heart Foundation; Copenhagen Denmark
- The National Institute of Public Health; University of Southern Denmark; Copenhagen Denmark
| | - T. Skaaby
- Research Centre for Prevention and Health; The Capital Region of Denmark; Copenhagen Denmark
| | - A. Linneberg
- Research Centre for Prevention and Health; The Capital Region of Denmark; Copenhagen Denmark
- Department of Clinical Experimental Research; Rigshospitalet Denmark
- Department of Clinical Medicine; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - J. P. Thyssen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
- Copenhagen Research Group for Inflammatory Skin (CORGIS); Herlev and Gentofte Hospital; Hellerup Denmark
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Ruff S, Engebretsen K, Zachariae C, Johansen J, Silverberg J, Egeberg A, Thyssen J. The association between atopic dermatitis and hand eczema: a systematic review and meta‐analysis. Br J Dermatol 2018; 178:879-888. [DOI: 10.1111/bjd.16147] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2017] [Indexed: 02/06/2023]
Affiliation(s)
- S.M.D. Ruff
- Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
| | - K.A. Engebretsen
- Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
- National Allergy Research Centre (Department of Dermatology and Allergy) Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
| | - C. Zachariae
- Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
| | - J.D. Johansen
- National Allergy Research Centre (Department of Dermatology and Allergy) Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
| | - J.I. Silverberg
- Departments of Dermatology, Preventive Medicine and Medical Social Sciences Feinberg School of Medicine at Northwestern University Chicago IL U.S.A
| | - A. Egeberg
- Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
| | - J.P. Thyssen
- Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
- National Allergy Research Centre (Department of Dermatology and Allergy) Herlev and Gentofte Hospital University of Copenhagen Kildegaardsvej 28 DK‐2900 Hellerup Denmark
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26
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Simonsen A, Johansen J, Deleuran M, Mortz C, Skov L, Sommerlund M. Children with atopic dermatitis may have unacknowledged contact allergies contributing to their skin symptoms. J Eur Acad Dermatol Venereol 2018; 32:428-436. [DOI: 10.1111/jdv.14737] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/20/2017] [Indexed: 12/30/2022]
Affiliation(s)
- A.B. Simonsen
- Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
- National Allergy Research Centre; Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
| | - J.D. Johansen
- National Allergy Research Centre; Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
| | - M. Deleuran
- Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
| | - C.G. Mortz
- Department of Dermatology and Allergy Centre; Odense University Hospital; Odense Denmark
| | - L. Skov
- Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
| | - M. Sommerlund
- Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
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27
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Rehman K, Fatima F, Waheed I, Akash MSH. Prevalence of exposure of heavy metals and their impact on health consequences. J Cell Biochem 2017. [PMID: 28643849 DOI: 10.1002/jcb.26234] [Citation(s) in RCA: 619] [Impact Index Per Article: 88.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Even in the current era of growing technology, the concentration of heavy metals present in drinking water is still not within the recommended limits as set by the regulatory authorities in different countries of the world. Drinking water contaminated with heavy metals namely; arsenic, cadmium, nickel, mercury, chromium, zinc, and lead is becoming a major health concern for public and health care professionals. Occupational exposure to heavy metals is known to occur by the utilization of these metals in various industrial processes and/or contents including color pigments and alloys. However, the predominant source resulting in measurable human exposure to heavy metals is the consumption of contaminated drinking water and the resulting health issues may include cardiovascular disorders, neuronal damage, renal injuries, and risk of cancer and diabetes. The general mechanism involved in heavy metal-induced toxicity is recognized to be the production of reactive oxygen species resulting oxidative damage and health related adverse effects. Thus utilization of heavy metal-contaminated water is resulting in high morbidity and mortality rates all over the world. Thereby, feeling the need to raise the concerns about contribution of different heavy metals in various health related issues, this article has discussed the global contamination of drinking water with heavy metals to assess the health hazards associated with consumption of heavy metal-contaminated water. A relationship between exposure limits and ultimate responses produced as well as the major organs affected have been reviewed. Acute and chronic poisoning symptoms and mechanisms responsible for such toxicities have also been discussed.
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Affiliation(s)
- Kanwal Rehman
- Institute of Pharmacy, Physiology, and Pharmacology, University of Agriculture, Faisalabad, Pakistan
| | - Fiza Fatima
- Institute of Pharmacy, Physiology, and Pharmacology, University of Agriculture, Faisalabad, Pakistan
| | - Iqra Waheed
- Institute of Pharmacy, Physiology, and Pharmacology, University of Agriculture, Faisalabad, Pakistan
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28
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Joensen UN, Jørgensen N, Thyssen JP, Petersen JH, Szecsi PB, Stender S, Andersson AM, Skakkebæk NE, Frederiksen H. Exposure to phenols, parabens and UV filters: Associations with loss-of-function mutations in the filaggrin gene in men from the general population. ENVIRONMENT INTERNATIONAL 2017; 105:105-111. [PMID: 28525834 DOI: 10.1016/j.envint.2017.05.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/04/2017] [Accepted: 05/12/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Filaggrin is an epidermal protein that is important for normal skin barrier functions. Up to 10% of Europeans and Asians carry filaggrin gene (FLG) loss-of function mutations that appear to facilitate trans-epidermal penetration of certain chemicals. We previously showed that mutation carriers have higher internal exposure to certain phthalates, compared to controls, and hypothesized that they could have increased trans-epidermal penetration of other chemicals. OBJECTIVES We investigated exposure to non-persistent chemicals in young Danish men with and without FLG mutations. METHODS Concentrations of eight simple phenols, six parabens and nine UV filters were analysed in urine from 65 FLG loss-of-function mutation carriers and 130 non-carriers (controls). Regression analyses, controlling for urinary dilution and confounders, were performed to estimate associations between FLG mutation status and chemical concentrations in urine. RESULTS FLG mutation carriers had 80% (13-180%) higher urinary concentrations of methyl paraben (MeP) and 91% (13-219%) higher concentrations of n-propyl paraben (n-PrP) than controls. For 13 compounds, levels were higher in FLG mutation carriers, although differences were only statistically significant for MeP and n-PrP. Combined statistical analysis of concentrations of all the 18 compounds that were detectable in >10% of subjects, suggested that concentrations were generally higher in mutation carriers (p=0.03). CONCLUSION FLG loss-of-function mutation carriers have a higher internal exposure to some non-persistent chemicals, independently of atopic dermatitis. This may be due to increased trans-epidermal absorption and/or higher exposure, and mutation carriers may constitute a group susceptible to increased absorption of chemicals and topical medication.
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Affiliation(s)
- Ulla N Joensen
- University Department of Growth and Reproduction, Copenhagen University Hospital Rigshospitalet, Section 5064, Blegdamsvej 9, 2100 Copenhagen, Denmark.
| | - Niels Jørgensen
- University Department of Growth and Reproduction, Copenhagen University Hospital Rigshospitalet, Section 5064, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Jacob P Thyssen
- National Allergy Research Centre, Department of Dermatology and Allergy, Copenhagen University Hospital Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
| | - Jørgen Holm Petersen
- University Department of Growth and Reproduction, Copenhagen University Hospital Rigshospitalet, Section 5064, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Pal B Szecsi
- Department of Clinical Biochemistry, Copenhagen University Hospital Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
| | - Steen Stender
- Department of Clinical Biochemistry, Copenhagen University Hospital Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
| | - Anne-Maria Andersson
- University Department of Growth and Reproduction, Copenhagen University Hospital Rigshospitalet, Section 5064, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Niels E Skakkebæk
- University Department of Growth and Reproduction, Copenhagen University Hospital Rigshospitalet, Section 5064, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Hanne Frederiksen
- University Department of Growth and Reproduction, Copenhagen University Hospital Rigshospitalet, Section 5064, Blegdamsvej 9, 2100 Copenhagen, Denmark
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Hamann CR, Hamann D, Egeberg A, Johansen JD, Silverberg J, Thyssen JP. Association between atopic dermatitis and contact sensitization: A systematic review and meta-analysis. J Am Acad Dermatol 2017; 77:70-78. [DOI: 10.1016/j.jaad.2017.02.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/31/2017] [Accepted: 02/01/2017] [Indexed: 01/11/2023]
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30
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Rundle CW, Bergman D, Goldenberg A, Jacob SE. Contact dermatitis considerations in atopic dermatitis. Clin Dermatol 2017; 35:367-374. [DOI: 10.1016/j.clindermatol.2017.03.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Simonsen A, Johansen J, Deleuran M, Mortz C, Sommerlund M. Contact allergy in children with atopic dermatitis: a systematic review. Br J Dermatol 2017; 177:395-405. [DOI: 10.1111/bjd.15628] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2017] [Indexed: 12/30/2022]
Affiliation(s)
- A.B. Simonsen
- Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
- National Allergy Research Centre; Department of Dermatology and Allergy; Copenhagen University Hospital Gentofte - Herlev; Kildegaardsvej 28 2900 Hellerup Denmark
| | - J.D. Johansen
- National Allergy Research Centre; Department of Dermatology and Allergy; Copenhagen University Hospital Gentofte - Herlev; Kildegaardsvej 28 2900 Hellerup Denmark
| | - M. Deleuran
- Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
| | - C.G. Mortz
- Department of Dermatology and Allergy; Odense University Hospital; Odense Denmark
| | - M. Sommerlund
- Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
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32
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Heede NG, Thuesen BH, Thyssen JP, Linneberg A, Szecsi PB, Stender S, Menné T, Johansen JD. Hand eczema, atopic dermatitis and filaggrin mutations in adult Danes: a registry-based study assessing risk of disability pension. Contact Dermatitis 2017; 77:95-105. [DOI: 10.1111/cod.12786] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 01/16/2017] [Accepted: 02/05/2017] [Indexed: 02/01/2023]
Affiliation(s)
- Nina G. Heede
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Betina H. Thuesen
- Research Centre for Prevention and Health, the Capital Region of Denmark; 2600 Glostrup Denmark
| | - Jacob P. Thyssen
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Allan Linneberg
- Research Centre for Prevention and Health, the Capital Region of Denmark; 2600 Glostrup Denmark
- Department of Clinical Experimental Research; Rigshospitalet; 2600 Glostrup Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine; University of Copenhagen; 2200 Copenhagen Denmark
| | - Pal B. Szecsi
- Department of Clinical Biochemistry; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Steen Stender
- Department of Clinical Biochemistry; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Torkil Menné
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Jeanne D. Johansen
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
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34
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Heede NG, Thyssen JP, Thuesen BH, Linneberg A, Szecsi PB, Stender S, Johansen JD. Health-related quality of life in adult dermatitis patients stratified by filaggrin genotype. Contact Dermatitis 2016; 76:167-177. [DOI: 10.1111/cod.12731] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 10/18/2016] [Accepted: 10/19/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Nina G. Heede
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Jacob P. Thyssen
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Betina H. Thuesen
- Research Centre for Prevention and Health, the Capital Region of Denmark; 2600 Copenhagen Denmark
| | - Allan Linneberg
- Research Centre for Prevention and Health, the Capital Region of Denmark; 2600 Copenhagen Denmark
- Department of Clinical Experimental Research; Rigshospitalet; Glostrup Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine; University of Copenhagen; 2200 Copenhagen Denmark
| | - Pal B. Szecsi
- Department of Clinical Biochemistry; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Steen Stender
- Department of Clinical Biochemistry; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
| | - Jeanne D. Johansen
- Department of Dermatology and Allergy, The National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; 2900 Hellerup Denmark
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Lubbes S, Rustemeyer T, Sillevis Smitt JH, Schuttelaar ML, Middelkamp-Hup MA. Contact sensitization in Dutch children and adolescents with and without atopic dermatitis - a retrospective analysis. Contact Dermatitis 2016; 76:151-159. [DOI: 10.1111/cod.12711] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 09/10/2016] [Accepted: 09/20/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Stefanie Lubbes
- Department of Dermatology; Academic Medical Centre, University of Amsterdam; 1100 DD Amsterdam The Netherlands
| | - Thomas Rustemeyer
- Department of Dermatology; VU University Medical Centre; 1081 HV Amsterdam The Netherlands
| | - Johannes H. Sillevis Smitt
- Department of Dermatology; Academic Medical Centre, University of Amsterdam; 1100 DD Amsterdam The Netherlands
| | - Marie Louise Schuttelaar
- Department of Dermatology; University Medical Centre Groningen; 9700 RB Groningen The Netherlands
| | - Maritza A. Middelkamp-Hup
- Department of Dermatology; Academic Medical Centre, University of Amsterdam; 1100 DD Amsterdam The Netherlands
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Elholm G, Linneberg A, Husemoen LLN, Omland Ø, Grønager PM, Sigsgaard T, Schlünssen V. The Danish urban-rural gradient of allergic sensitization and disease in adults. Clin Exp Allergy 2016; 46:103-11. [PMID: 26096697 DOI: 10.1111/cea.12583] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 05/08/2015] [Accepted: 06/07/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND The reported prevalence of allergic sensitization among children is lower in rural areas than in urban areas of the world. The aim was to investigate the urban-rural differences of allergic sensitization to inhalant allergens in adults depending on childhood exposure living in an industrialized country as Denmark. METHODS A total of 1236 male participants of 30-40 years of age recruited from two epidemiological studies were divided into four groups with regard to place of upbringing; city, town, rural area and farm. Allergic sensitization was assessed by skin prick tests (SPTs) to 10 inhalant allergens and measurements of serum specific IgE (sIgE) to four inhalant allergens (grass, birch, cat and house dust mite). RESULTS The prevalence of allergic sensitization to inhalant allergens decreased with decreasing degree of urbanized childhood. The risk of being sensitized to one or more allergens also decreased with decreasing degree of urbanized upbringing measured by sIgE to 4 common allergens as odds ratio with 95% confidence intervals with city as reference; town 0.60 (0.39-0.92), rural area 0.34 (0.22-0.52) and farm 0.31 (0.21-0.46). Furthermore, it was measured by SPT to 10 common allergens; town 0.52 (0.33-0.84), rural area 0.34 (0.21-0.53) and farm 0.29 (0.19-0.45). This urban-rural association was also seen for the risk of sensitization to specific allergens, rhinitis and allergic asthma. CONCLUSION This is the first study to show an urban-rural gradient of overall allergic sensitization and specific allergen sensitization in adults depending on their childhood exposure. In this highly homogenous western population, exposure to a less urbanized childhood was associated with lower risk of allergic sensitization and disease as an adult.
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Affiliation(s)
- G Elholm
- Section for Environment Occupation and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - A Linneberg
- Research Centre for Prevention and Health, The Capital Region of Denmark, Copenhagen, Denmark.,Department of Clinical Experimental Research, Glostrup University Hospital, Glostrup, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - L L N Husemoen
- Research Centre for Prevention and Health, The Capital Region of Denmark, Copenhagen, Denmark
| | - Ø Omland
- Clinic of Occupational Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - P M Grønager
- Research ALK Abelló, ALK Abelló, Hørsholm, Denmark
| | - T Sigsgaard
- Section for Environment Occupation and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - V Schlünssen
- Section for Environment Occupation and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
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Fransen M, Mohammadzadeh P, Bandier J, Overgaard L, Johansen J, Thyssen J. Information about filaggrin genotype is valuable for adult atopic dermatitis patients. J Eur Acad Dermatol Venereol 2016; 31:e156-e158. [DOI: 10.1111/jdv.13883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Fransen
- Department of Dermato-Allergology; National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; Hellerup Denmark
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
| | - P. Mohammadzadeh
- Department of Dermato-Allergology; National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; Hellerup Denmark
| | - J. Bandier
- Department of Dermato-Allergology; National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; Hellerup Denmark
| | - L.E.K. Overgaard
- Department of Dermato-Allergology; National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; Hellerup Denmark
| | - J.D. Johansen
- Department of Dermato-Allergology; National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; Hellerup Denmark
| | - J.P. Thyssen
- Department of Dermato-Allergology; National Allergy Research Centre; Copenhagen University Hospital Herlev-Gentofte; Hellerup Denmark
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Allergic contact dermatitis. J Am Acad Dermatol 2016; 74:1029-40. [DOI: 10.1016/j.jaad.2015.02.1139] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 02/05/2015] [Accepted: 02/08/2015] [Indexed: 01/30/2023]
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Bandier J, Ross-Hansen K, Carlsen BC, Tanassi JT, Johansen JD, Heegaard NHH. Quantification of Epidermal Filaggrin in Human Skin and its Response to Skin Irritation. J Invest Dermatol 2016; 136:1296-1299. [PMID: 26899948 DOI: 10.1016/j.jid.2016.01.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 01/11/2016] [Accepted: 01/12/2016] [Indexed: 11/18/2022]
Affiliation(s)
- Josefine Bandier
- National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
| | - Katrine Ross-Hansen
- National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark
| | - Berit C Carlsen
- National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark
| | - Julie T Tanassi
- Department of Clinical Biochemistry, Immunology & Genetics, Statens Serum Institut, Copenhagen, Denmark
| | - Jeanne D Johansen
- National Allergy Research Centre, Department of Dermato-Allergology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark
| | - Niels H H Heegaard
- Department of Clinical Biochemistry, Immunology & Genetics, Statens Serum Institut, Copenhagen, Denmark; Department of Clinical Biochemistry & Pharmacology, Odense University Hospital, University of Southern Denmark, Odense, Denmark
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Kasemsarn P, Iamphonrat T, Boonchai W. Risk factors and common contact allergens in facial allergic contact dermatitis patients. Int J Dermatol 2015; 55:417-24. [DOI: 10.1111/ijd.12880] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 08/25/2014] [Accepted: 10/06/2014] [Indexed: 12/01/2022]
Affiliation(s)
- Pranee Kasemsarn
- Contact Dermatitis Clinic; Department of Dermatology; Faculty of Medicine; Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - Thanawan Iamphonrat
- Contact Dermatitis Clinic; Department of Dermatology; Faculty of Medicine; Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - Waranya Boonchai
- Contact Dermatitis Clinic; Department of Dermatology; Faculty of Medicine; Siriraj Hospital; Mahidol University; Bangkok Thailand
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Goldenberg A, Admani S, Pelletier JL, Jacob SE. Belt Buckles-Increasing Awareness of Nickel Exposure in Children: A Case Report. Pediatrics 2015; 136:e691-3. [PMID: 26240212 DOI: 10.1542/peds.2015-0794] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/19/2015] [Indexed: 11/24/2022] Open
Abstract
Children, especially those with atopic dermatitis, are at risk for nickel sensitization and subsequent dermatitis from metal-containing objects, namely belt buckles. We describe allergic contact dermatitis in 12 children with peri-umbilical nickel dermatitis (with and without generalized involvement) caused by dimethylglyoxime-positive belt buckles. The patients' symptoms resolved with avoidance of the nickel-containing products.
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Affiliation(s)
- Alina Goldenberg
- Division of Dermatology, University of California-San Diego, San Diego, California
| | - Shehla Admani
- Division of Dermatology, University of California-San Diego, La Jolla, California
| | - Janice L Pelletier
- Pediatric Dermatology of Maine, Eastern Maine Medical Center, Bangor, Maine; and
| | - Sharon E Jacob
- Department of Dermatology and Contact Dermatitis Clinic, Loma Linda University, Loma Linda, California
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Eriksen KK. To know or not to know? Integrating ethical aspects of genomic healthcare in the education of health professionals. BIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION : A BIMONTHLY PUBLICATION OF THE INTERNATIONAL UNION OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2015; 43:81-87. [PMID: 25712506 DOI: 10.1002/bmb.20859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 01/16/2015] [Indexed: 06/04/2023]
Abstract
Novel possibilities for employing genetic testing as part of the diagnostic process for a wide variety of diseases and conditions are emerging almost every day. This development brings prospects of more efficient treatment and prevention of serious and often lethal conditions. However, it also raises ethical questions concerning the issue of knowing or not knowing about our genetic make-up. Thus, as techniques for genetic testing are increasingly employed, demands on health professionals are changing. Health professionals must be able to inform and guide patients, and therefore they need knowledge and competencies related to both the technical and the ethical dimensions of genetic testing. This paper explores the requirements of the general education of health professionals if this need for ethics is acknowledged. It is suggested that it is important to include both an individualised and a societal ethical perspective to the development of genomic healthcare and that a key concept in doing so is 'professional reflectivity'. Employing one concrete example of teaching, this concept of reflectivity is operationalised in the health educational setting at the bachelor's level with a special focus on biomedical laboratory science, and three key concepts are developed: Gap sensitive interaction, professional humility, and contextual awareness. Additionally, anchored ethical dialog is explored as an instructional design that may support the development of reflectivity among health professionals.
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Heede NG, Thyssen JP, Thuesen BH, Linneberg A, Johansen JD. Anatomical patterns of dermatitis in adult filaggrin mutation carriers. J Am Acad Dermatol 2015; 72:440-8. [DOI: 10.1016/j.jaad.2015.01.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/12/2014] [Accepted: 01/05/2015] [Indexed: 01/28/2023]
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Armengot-Carbo M, Hernández-Martín Á, Torrelo A. The Role of Filaggrin in the Skin Barrier and Disease Development. ACTAS DERMO-SIFILIOGRAFICAS 2015. [DOI: 10.1016/j.adengl.2014.12.007] [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] Open
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Rupnik H, Rijavec M, Korošec P. Filaggrin loss-of-function mutations are not associated with atopic dermatitis that develops in late childhood or adulthood. Br J Dermatol 2015; 172:455-61. [PMID: 25314673 DOI: 10.1111/bjd.13477] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2014] [Indexed: 01/14/2023]
Abstract
BACKGROUND The influence of filaggrin gene (FLG) mutations on early- vs. late-onset development of atopic dermatitis (AD), allergic contact dermatitis (ACD) and chronic irritant contact dermatitis (CICD) is not completely understood. OBJECTIVES To assess the association between FLG mutations and development of AD, ACD and CICD. METHODS This study assessed 241 patients with AD. AD developed during infancy in 85 patients, during childhood in 79 patients (32 early and 47 late) and during adulthood in 77 patients. We also included 100 patients with ACD and 44 with CICD, as well as 164 healthy controls. Four prevalent FLG loss-of-function mutations were genotyped (R501X, 2282del4, R2447X and S3247X). RESULTS The 2282del4 mutation was significantly associated with a greater risk of AD in the entire group [odds ratio (OR) 4·33, 95% confidence interval (CI) 1·26-14·96]. However, the 2282del4 mutation was associated only with AD that developed during infancy or in early childhood (≤ 8 years: OR 20·91, 95% CI 2·73-159·9), not with AD development in late childhood or adulthood (> 8 or > 18 years), or ACD or CICD. Similar associations were also observed for the combined 2282del4 or R501X genotype. Carriers of FLG mutations also experienced a longer duration of AD and required hospitalization more often. CONCLUSIONS FLG mutations are associated with only the early onset of AD, not late onset. Other factors should receive attention in patients with late-onset AD.
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Affiliation(s)
- H Rupnik
- Department of Dermatovenereology, University Medical Centre Ljubljana, Ljubljana, Slovenia; Dermatology Centre Arsderma, Ljubljana, Slovenia
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Mutations in the filaggrin gene and food allergy. GASTROENTEROLOGY REVIEW 2014; 9:200-7. [PMID: 25276250 PMCID: PMC4178045 DOI: 10.5114/pg.2014.45100] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 07/10/2012] [Accepted: 12/05/2012] [Indexed: 01/25/2023]
Abstract
The results of long-term epidemiological studies show that the number of people suffering from allergic diseases, especially from food allergies and atopic dermatitis (AD), is still increasing. Although the research thus far has been conducted mainly in Europe, North America, and Asia, there are also data appearing from the first studies in that field among the African population. This may indicate the importance of the problem of allergic diseases. The discovery that loss-of-function mutations in the gene coding filaggrin (FLG) are the cause of ichthyosis vulgaris marked a significant breakthrough in understanding the pathogenesis of allergic diseases. The presence of mutations in the filaggrin gene is also an important factor that predisposes to such allergic diseases as: allergic rhinitis, atopic dermatitis, atopic asthma, and food allergy. So far, over 40 loss-of-function mutations and numerous silent mutations in filaggrin have been discovered.
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47
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Clemmensen KKB, Thomsen SF, Jemec GBE, Agner T. Pattern of contact sensitization in patients with and without atopic dermatitis in a hospital-based clinical database. Contact Dermatitis 2014; 71:75-81. [PMID: 24697272 DOI: 10.1111/cod.12229] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 01/24/2014] [Accepted: 01/26/2014] [Indexed: 01/09/2023]
Abstract
BACKGROUND Both atopic dermatitis and contact sensitization are common conditions; however, a definite understanding of the relationship between contact sensitization and atopic dermatitis has not been reached. OBJECTIVES In this descriptive study, we investigated the differences between positive patch test reactions in patients with and without atopic dermatitis in a patch test cohort, and explored the influence of disease severity. PATIENTS/MATERIALS/METHODS Patch test results, information on atopic dermatitis and demographic variables were taken from a database, including all patients patch tested at Bispebjerg and Roskilde Hospitals from January 2009 to January 2013. Severe atopic dermatitis was defined as systemic therapy or hospitalization resulting from atopic dermatitis. All other patients with atopic dermatitis were defined as having mild/moderate disease. RESULTS The study included 2221 patients: 293 patients with atopic dermatitis and 1928 without. Forty-one per cent of patients with and 46.2% of patients without atopic dermatitis had at least one positive patch test reaction (p = 0.092). More patients with severe atopic dermatitis than patients with non-severe atopic dermatitis had multiple positive patch test reactions (19.4% versus 10.0%, p = 0.046). CONCLUSIONS Overall, we found similar frequencies of positive patch test reactions in patients with and without atopic dermatitis. However, a higher frequency of multiple sensitizations was found in patients with severe atopic dermatitis.
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48
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Joensen UN, Jørgensen N, Meldgaard M, Frederiksen H, Andersson AM, Menné T, Johansen JD, Carlsen BC, Stender S, Szecsi PB, Skakkebæk NE, Rajpert-De Meyts E, Thyssen JP. Associations of filaggrin gene loss-of-function variants with urinary phthalate metabolites and testicular function in young Danish Men. ENVIRONMENTAL HEALTH PERSPECTIVES 2014; 122:345-50. [PMID: 24380925 PMCID: PMC3984221 DOI: 10.1289/ehp.1306720] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 12/23/2013] [Indexed: 05/12/2023]
Abstract
BACKGROUND Filaggrin is an epidermal protein that is crucial for skin barrier function. Up to 10% of Europeans and 5% of Asians carry at least one null allele in the filaggrin gene (FLG). Reduced expression of filaggrin in carriers of the null allele is associated with facilitated transfer of allergens across the epidermis. We hypothesized that these individuals may have increased transdermal uptake of endocrine disruptors, including phthalates. OBJECTIVES We investigated urinary excretion of phthalate metabolites and testicular function in young men with and without FLG loss-of-function variants in a cross-sectional study of 861 young men from the general Danish population. METHODS All men were genotyped for FLG R501X, 2282del4, and R2447X loss-of-function variants. We measured urinary concentrations of 14 phthalate metabolites and serum levels of reproductive hormones. We also evaluated semen quality. RESULTS Sixty-five men (7.5%) carried at least one FLG-null allele. FLG-null carriers had significantly higher urinary concentrations of several phthalate metabolites, including a 33% higher concentration of MnBP (mono-n-butyl phthalate; 95% CI: 16, 51%). FLG-null variants were not significantly associated with reproductive hormones or semen quality parameters. CONCLUSION This study provides evidence that carriers of FLG loss-of-function alleles may have higher internal exposure to phthalates, possibly due to increased transepidermal absorption. FLG loss-of-function variants may indicate susceptible populations for which special attention to transepidermal absorption of chemicals and medication may be warranted.
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Affiliation(s)
- Ulla Nordström Joensen
- Department of Growth and Reproduction, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
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Armengot-Carbo M, Hernández-Martín Á, Torrelo A. The role of filaggrin in the skin barrier and disease development. ACTAS DERMO-SIFILIOGRAFICAS 2014; 106:86-95. [PMID: 24674607 DOI: 10.1016/j.ad.2013.10.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 08/17/2013] [Accepted: 10/13/2013] [Indexed: 12/30/2022] Open
Abstract
Filaggrin is a structural protein that is fundamental in the development and maintenance of the skin barrier. The function of filaggrin and its involvement in various cutaneous and extracutaneous disorders has been the subject of considerable research in recent years. Mutations in FLG, the gene that encodes filaggrin, have been shown to cause ichthyosis vulgaris, increase the risk of atopic dermatitis and other atopic diseases, and exacerbate certain conditions. The present article reviews the current knowledge on the role of filaggrin in the skin barrier, FLG mutations, and the consequences of filaggrin deficiency.
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Affiliation(s)
- M Armengot-Carbo
- Servicio de Dermatología, Hospital Infantil Niño Jesús, Madrid, España.
| | | | - A Torrelo
- Servicio de Dermatología, Hospital Infantil Niño Jesús, Madrid, España
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Kubo A, Ishizaki I, Kubo A, Kawasaki H, Nagao K, Ohashi Y, Amagai M. The stratum corneum comprises three layers with distinct metal-ion barrier properties. Sci Rep 2014; 3:1731. [PMID: 23615774 PMCID: PMC3635058 DOI: 10.1038/srep01731] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 04/11/2013] [Indexed: 11/09/2022] Open
Abstract
The stratum corneum (SC), the outermost barrier of mammalian bodies, consists of layers of cornified keratinocytes with intercellular spaces sealed with lipids. The insolubility of the SC has hampered in-depth analysis, and the SC has been considered a homogeneous barrier. Here, we applied time-of-flight secondary ion mass spectrometry to demonstrate that the SC consists of three layers with distinct properties. Arginine, a major component of filaggrin-derived natural moisturizing factors, was concentrated in the middle layer, suggesting that this layer functions in skin hydration. Topical application of metal ions revealed that the outer layer allowed their passive influx and efflux, while the middle and lower layers exhibited distinct barrier properties, depending on the metal tested. Notably, filaggrin deficiency abrogated the lower layer barrier, allowing specific metal ions to permeate viable layers. These findings elucidate the multi-layered barrier function of the SC and its defects in filaggrin-deficient atopic disease patients.
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Affiliation(s)
- Akiharu Kubo
- Department of Dermatology, Keio University School of Medicine, Tokyo 160-8582, Japan.
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