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Christensen MO, Yüksel YT, Vittrup I, Nymand LK, Thein D, Nørreslet LB, Toft-Hansen JM, Janstrup AK, Zachariae C, Sommerlund M, Bregnhøj A, Egeberg A, Agner T, Thomsen SF, Thyssen JP. Demographics, characteristics and medical treatment among adults with hand eczema in Denmark. A cross-sectional validation and registry-based study. Contact Dermatitis 2024; 90:350-364. [PMID: 37990822 DOI: 10.1111/cod.14456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 10/20/2023] [Accepted: 10/24/2023] [Indexed: 11/23/2023]
Abstract
BACKGROUND The international classification of diseases, 10th revision (ICD-10) includes several unvalidated diagnostic codes for hand eczema (HE). Knowledge is sparse on HE patient characteristics. OBJECTIVES To validate selected HE ICD-10 codes in the Danish National Patient Registry (DNPR) and describe disease characteristics, lifestyle factors and medication use in adult HE patients. METHODS Nineteen HE ICD-10 codes were selected and validated based on patient charts. Five cohorts were constructed based on the diagnostic code, DL30.8H (HE unspecified), in the DNPR: (i) patients with DL30.8H code (n = 8386), (ii) patients with DL30.8H code, but without atopic dermatitis (AD) (n = 7406), (iii) sex- and age-matched general population (n = 8386) without HE. Two additional cohorts nested in the DNPR included participants from the Danish Skin Cohort, (iv) patients with DL30.8H code but without AD (n = 1340) and (v) general population cohort (n = 9876). RESULTS ICD-10 codes revealed positive predictive values ≥90% except irritant contact dermatitis (unspecified) (79.7%) and hyperkeratotic hand and foot eczema (84.1%). HE patients were most often women, middle-aged or older, of Danish ethnicity, had an atopic medical history and were smokers. Topical corticosteroid prescriptions were almost doubled in HE cohorts compared to general populations. CONCLUSION We validated several HE ICD-10 codes and identified important HE patient characteristics.
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Affiliation(s)
- Maria Oberländer Christensen
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Yasemin Topal Yüksel
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Ida Vittrup
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Lea Krog Nymand
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - David Thein
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Line Brok Nørreslet
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Jakob Maarbjerg Toft-Hansen
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Anne Klose Janstrup
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Claus Zachariae
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, Hellerup, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Mette Sommerlund
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Alexander Egeberg
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, Hellerup, Denmark
| | - Tove Agner
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Simon Francis Thomsen
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jacob Pontoppidan Thyssen
- Department of Dermatology and Venereology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
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Ben Abdallah H, Bregnhøj A, Ghatnekar G, Iversen L, Johansen C. Heat shock protein 90 inhibition attenuates inflammation in models of atopic dermatitis: a novel mechanism of action. Front Immunol 2024; 14:1289788. [PMID: 38274815 PMCID: PMC10808526 DOI: 10.3389/fimmu.2023.1289788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/11/2023] [Indexed: 01/27/2024] Open
Abstract
Background Heat shock protein 90 (HSP90) is an important chaperone supporting the function of many proinflammatory client proteins. Recent studies indicate HSP90 inhibition may be a novel mechanism of action for inflammatory skin diseases; however, this has not been explored in atopic dermatitis (AD). Objectives Our study aimed to investigate HSP90 as a novel target to treat AD. Methods Experimental models of AD were used including primary human keratinocytes stimulated with cytokines (TNF/IFNγ or TNF/IL-4) and a mouse model established by MC903 applications. Results In primary human keratinocytes using RT-qPCR, the HSP90 inhibitor RGRN-305 strongly suppressed the gene expression of Th1- (TNF, IL1B, IL6) and Th2-associated (CCL17, CCL22, TSLP) cytokines and chemokines related to AD. We next demonstrated that topical and oral RGRN-305 robustly suppressed MC903-induced AD-like inflammation in mice by reducing clinical signs of dermatitis (oedema and erythema) and immune cell infiltration into the skin (T cells, neutrophils, mast cells). Interestingly, topical RGRN-305 exhibited similar or slightly inferior efficacy but less weight loss compared with topical dexamethasone. Furthermore, RNA sequencing of skin biopsies revealed that RGRN-305 attenuated MC903-induced transcriptome alterations, suppressing genes implicated in inflammation including AD-associated cytokines (Il1b, Il4, Il6, Il13), which was confirmed by RT-qPCR. Lastly, we discovered using Western blot that RGRN-305 disrupted JAK-STAT signaling by suppressing the activity of STAT3 and STAT6 in primary human keratinocytes, which was consistent with enrichment analyses from the mouse model. Conclusion HSP90 inhibition by RGRN-305 robustly suppressed inflammation in experimental models mimicking AD, proving that HSP90 inhibition may be a novel mechanism of action in treating AD.
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Affiliation(s)
- Hakim Ben Abdallah
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Anne Bregnhøj
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Lars Iversen
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Claus Johansen
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
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Ben Abdallah H, Bregnhøj A, Emmanuel T, Ghatnekar G, Johansen C, Iversen L. Efficacy and Safety of the Heat Shock Protein 90 Inhibitor RGRN-305 in Hidradenitis Suppurativa: A Parallel-Design Double-Blind Trial. JAMA Dermatol 2024; 160:63-70. [PMID: 38055242 PMCID: PMC10701664 DOI: 10.1001/jamadermatol.2023.4800] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 10/05/2023] [Indexed: 12/07/2023]
Abstract
Importance Hidradenitis suppurativa is a painful immune-mediated disorder with limited treatment options; hence, a need exists for new treatments. Objective To evaluate the feasibility of heat shock protein 90 inhibition by RGRN-305 as a novel mechanism of action in treating moderate to severe hidradenitis suppurativa. Design, Setting, and Participants This was a parallel-design, double-blind, proof-of-concept, placebo-controlled randomized clinical trial conducted between September 22, 2021, and August 29, 2022, at the Department of Dermatology, Aarhus University Hospital in Denmark. The study included a 1- to 30-day screening period, a 16-week treatment period, and a 4-week follow-up period. Eligibility criteria included age 18 years or older and moderate to severe hidradenitis suppurativa with 6 or more inflammatory nodules or abscesses in at least 2 distinct anatomic regions. Of 19 patients screened, 15 patients were enrolled in the study. Intention-to-treat analysis was performed. Interventions Patients were randomly assigned (2:1) to receive oral RGRN-305, 250-mg tablet, or matching placebo once daily for 16 weeks. Main Outcomes and Measures The primary efficacy end point was the percentage of patients achieving Hidradenitis Suppurativa Clinical Response 50 (HiSCR-50) at week 16. Secondary efficacy end points included HiSCR-75 or HiSCR-90, Hidradenitis Suppurativa Physician's Global Assessment, Dermatology Life Quality Index scores, and a pain numeric rating scale. Safety was assessed by adverse events, physical examinations, clinical laboratory measurements, and electrocardiograms. Results A total of 15 patients were enrolled, completed the study, and were included in all analyses (10 [67%] female; median age, 29 [IQR, 23-41] years). The primary end point HiSCR-50 at week 16 was achieved by a higher percentage in the RGRN-305 group (60% [6 of 10]) than in the placebo group (20% [1 of 5]). Improvements were also observed across all secondary end points at week 16, including higher rates of the harder-to-reach HiSCR levels; 50% (5 of 10) achieved HiSCR-75 and 30% (3 of 10) achieved HiSCR-90, whereas none of the placebo-treated patients achieved HiSCR-75 or HiSCR-90. RGRN-305 was well tolerated, with no deaths or serious adverse events, and treatment-emergent adverse events were similarly frequent between the RGRN-305 and placebo groups. Conclusions and Relevance The findings of this trial suggest that heat shock protein 90 inhibition by RGRN-305 offers a novel mechanism of action in treating hidradenitis suppurativa, warranting further evaluation in larger trials. Trial Registration ClinicalTrials.gov Identifier: NCT05286567.
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Affiliation(s)
- Hakim Ben Abdallah
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Anne Bregnhøj
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Thomas Emmanuel
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Claus Johansen
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Iversen
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
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Ben Abdallah H, Bregnhøj A, Iversen L, Johansen C. Transcriptomic Analysis of Hidradenitis Suppurativa: A Unique Molecular Signature with Broad Immune Activation. Int J Mol Sci 2023; 24:17014. [PMID: 38069342 PMCID: PMC10707244 DOI: 10.3390/ijms242317014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 12/18/2023] Open
Abstract
Hidradenitis suppurativa is a chronic inflammatory skin disease with limited treatment options. The poorly understood pathogenesis hinders the development of effective treatments; therefore, a pressing need exists to further elucidate the molecular mechanisms in hidradenitis suppurativa. This study investigated the underlying inflammatory pathways and cell types in hidradenitis suppurativa using transcriptomic approaches with RNA sequencing of lesional and non-lesional skin biopsies from hidradenitis suppurativa, which was jointly analyzed with previously published transcriptomic data from atopic dermatitis and psoriasis patients. The differential expression and pathway enrichment analyses demonstrated the activation of multiple inflammatory processes, including the innate and adaptive immune systems, implicated in the hidradenitis suppurativa pathogenesis. In agreement, hidradenitis suppurativa exhibited a unique and heterogeneous cell type signature involving lymphoid and myeloid cells such as B cells and macrophages. Furthermore, hidradenitis suppurativa displayed increased expression of TH1/2/17 signatures with no predominant TH signatures unlike psoriasis (TH1/17) and atopic dermatitis (TH2). In summary, our study provides molecular insights into the pathomechanisms in hidradenitis suppurativa, revealing a strong and widespread immune activation, which may benefit from treatment strategies offering a broad immunomodulation of various key inflammatory pathways. Our data not only corroborate previously reported findings but also enhance our understanding of the immune dysregulation in hidradenitis suppurativa, uncovering novel and potential therapeutic targets.
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Affiliation(s)
- Hakim Ben Abdallah
- Department of Dermatology and Venereology, Aarhus University Hospital, 8200 Aarhus, Denmark; (A.B.); (L.I.); (C.J.)
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Ben Abdallah H, Seeler S, Bregnhøj A, Ghatnekar G, Kristensen LS, Iversen L, Johansen C. Heat shock protein 90 inhibitor RGRN-305 potently attenuates skin inflammation. Front Immunol 2023; 14:1128897. [PMID: 36825010 PMCID: PMC9941631 DOI: 10.3389/fimmu.2023.1128897] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/20/2023] [Indexed: 02/09/2023] Open
Abstract
Introduction Chronic inflammatory skin diseases may have a profound negative impact on the quality of life. Current treatment options may be inadequate, offering an unsatisfactory response or side effects. Therefore, ongoing efforts exist to identify novel effective and safe treatments. Heat shock protein (HSP) 90 is a chaperone that promotes the activity of a wide range of client proteins including key proinflammatory molecules involved in aberrant inflammation. Recently, a proof-of-concept clinical trial of 13 patients suggested that RGRN-305 (an HSP90 inhibitor) may be an oral treatment for psoriasis. However, HSP90 inhibition may be a novel therapeutic approach extending beyond psoriasis to include multiple immune-mediated inflammatory skin diseases. Methods This study aimed to investigate (i) the anti-inflammatory effects and mechanisms of HSP90 inhibition and (ii) the feasibility of topical RGRN-305 administration (new route of administration) in models of inflammation elicited by 12-O-tetradecanoylphorbol-13-acetate (TPA) in primary human keratinocytes and mice (irritative dermatitis murine model). Results/Discussion In primary human keratinocytes stimulated with TPA, a Nanostring® nCounter gene expression assay demonstrated that HSP90 inhibition with RGRN-305 suppressed many proinflammatory genes. Furthermore, when measured by quantitative real-time polymerase chain reaction (RT-qPCR), RGRN-305 significantly reduced the gene expression of TNF, IL1B, IL6 and CXCL8. We next demonstrated that topical RGRN-305 application significantly ameliorated TPA-induced skin inflammation in mice. The increase in ear thickness (a marker of inflammation) was significantly reduced (up to 89% inhibition). In accordance, RT-qPCR of the ear tissue demonstrated that RGRN-305 robustly reduced the gene expression of proinflammatory markers (Tnf, Il1b, Il6, Il17A and Defb4). Moreover, RNA sequencing revealed that RGRN-305 mitigated TPA-induced alterations in gene expression and suppressed genes implicated in inflammation. Lastly, we discovered that the anti-inflammatory effects were mediated, at least partly, by suppressing the activity of NF-κB, ERK1/2, p38 MAPK and c-Jun signaling pathways, which are consistent with previous findings in other experimental models beyond skin inflammation. In summary, HSP90 inhibition robustly suppressed TPA-induced inflammation by targeting key proinflammatory cytokines and signaling pathways. Our findings suggest that HSP90 inhibition may be a novel mechanism of action for treating immune-mediated skin disease beyond psoriasis, and it may be a topical treatment option.
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Affiliation(s)
- Hakim Ben Abdallah
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark,*Correspondence: Hakim Ben Abdallah,
| | - Sabine Seeler
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Anne Bregnhøj
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Lars Iversen
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Claus Johansen
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
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Danielsen M, Pallesen K, Riber-Hansen R, Bregnhøj A. A Rare Case of Prurigo Pigmentosa in a Danish Sibling Couple. Case Rep Dermatol 2023; 15:26-30. [PMID: 36726802 PMCID: PMC9885242 DOI: 10.1159/000528422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 11/09/2022] [Indexed: 01/28/2023] Open
Abstract
Prurigo pigmentosa (PP) is probably underdiagnosed due to lack of awareness. Previously, it was assumed that PP primarily affected Japanese females; however, more cases are reported worldwide, and the pathogenesis is still not completely understood. In this case report, we present two healthy Danish siblings, who developed PP approximately 2 weeks after starting a ketogenic diet, suggesting that both increased levels of ketone bodies in the blood together with a genetic predisposition might play a role in the development of PP.
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Affiliation(s)
- Maria Danielsen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Kristine Pallesen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
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Ben Abdallah H, Seeler S, Bregnhøj A, Ghatnekar G, Kristensen L, Iversen L, Johansen C. 354 Heat Shock Protein 90 Inhibitor Attenuates Inflammation Induced by 12-O-tetradecanoylphorbol-13-acetate in Primary Human Keratinocytes and Mice. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Emmanuel T, Litman T, Ignatov B, Bertelsen T, Steiniche T, Lybæk D, Bregnhøj A, Eidsmo L, Iversen L, Johansen C. 056 Highly Multiplexed Digital Spatial Profiling of Resolved Psoriasis Skin From Dead Sea Climatotherapy or Secukinumab Treated Patients. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Enevold C, Loft N, Bregnhøj A, Zachariae C, Iversen L, Skov L, Nielsen CH. Circulating Brodalumab Levels and Therapy Outcomes in Patients With Psoriasis Treated With Brodalumab: A Case Series. JAMA Dermatol 2022; 158:762-769. [PMID: 35648430 DOI: 10.1001/jamadermatol.2022.1863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Importance Given the possible treatment modalities in psoriasis management, little is known about whether drug monitoring is associated with response rate. Objective To determine whether drug monitoring is associated with response to brodalumab therapy. Design A multicenter case series study of patients with psoriasis treated with brodalumab whose treatment with previous IL-17A inhibitor therapy failed. Patients were recruited from the Departments of Dermatology at Gentofte and Aarhus University Hospitals, Denmark, between 2018 and 2020. Patient visits were conducted after 4 and 12 weeks of therapy. Patients not achieving Psoriasis Area and Severity Index 75% improvement from baseline (PASI 75) after 12 weeks were discontinued and considered nonresponders. Patients maintaining PASI 75 response were followed up for up to 52 weeks. Exposure Treatment with brodalumab, 210 mg, at weeks 0, 1, 2, then every 2 weeks. Main Outcomes and Measures Outcome measures were PASI reductions vs brodalumab levels and antibrodalumab antibodies. Results Twenty patients with psoriasis (13 [65%] were male; median age, 50 years [range, 19-66 years]) were included. After 12 weeks of therapy, patients with quantifiable levels of brodalumab (≥0.05 μg/mL) experienced significantly higher PASI reductions than those without (median, 93%; range, 61%-100% vs median, -3; range, -49% to 94%, respectively; P = .006). After 12 weeks of therapy, 4 of 5 patients (80%) not achieving PASI 75 had subquantifiable drug levels (<0.05 μg/mL), although this finding was seen for only 3 of 14 PASI 75 responders (21%). None of 7 patients (35%) with subquantifiable drug levels after 12 weeks of therapy maintained response. No antibrodalumab antibodies were detected in any of the tested samples. Conclusions and Relevance Results of this case series study suggest that circulating brodalumab level is a factor associated with clinical treatment response. Monitoring patient levels of circulating brodalumab may aid clinical decision-making and help prevent ineffective therapy.
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Affiliation(s)
- Christian Enevold
- Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Nikolai Loft
- Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark.,Copenhagen Research Group for Inflammatory Skin, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark
| | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Claus Zachariae
- Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark.,Copenhagen Research Group for Inflammatory Skin, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Lone Skov
- Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark.,Copenhagen Research Group for Inflammatory Skin, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Claus Henrik Nielsen
- Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
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Alves da Silva C, Bregnhøj A, Mowitz M, Bruze M, Andersen KE, Sommerlund M. Contact dermatitis in children caused by diabetes devices. Contact Dermatitis 2022; 87:406-413. [PMID: 35634681 DOI: 10.1111/cod.14166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 05/16/2022] [Accepted: 05/27/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Insulin pump and glucose monitoring devices improve diabetes mellitus (DM) control and enhance patients' quality of life. However, a growing number of adverse cutaneous reactions related to the use of these devices has been reported. OBJECTIVE To investigate the culprits of localized contact dermatitis in pediatric patients with diabetes caused by insulin pump and glucose monitoring devices. METHODS Retrospective analysis of 15 pediatric patients patch tested as part of a clinical investigation for skin reactions associated with insulin pump and glucose monitoring devices RESULTS: Seven patients had positive patch test reactions to isobornyl acrylate (IBOA) and five had positive reactions to benzoyl peroxide (BP). Positive patch test reactions to materials from the glucose sensor and/or insulin pump were seen in 10 of the 15 patients. Three had positive reactions to adhesive remover wipe from Smith and Nephew Remove and four had reactions to EMLA plaster. CONCLUSION A high share of patients showed positive reactions to IBOA and/or their medical devices (insulin pumps or glucose devices). A third of patients showed positive reactions to benzoyl peroxide. The presence of additional unidentified allergens cannot be excluded, highlighting the importance of access to a full description of the chemical composition of the devices. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Anne Bregnhøj
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
| | - Martin Mowitz
- Department Occupational and Environmental Dermatology, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Magnus Bruze
- Department Occupational and Environmental Dermatology, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Klaus Ejner Andersen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark.,Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Mette Sommerlund
- Department of Dermatology and Venereology, Aarhus University Hospital, Aarhus, Denmark
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Blomberg M, Jørgensen CCL, Bregnhøj A, Ahrensbøll-Friis U, Zachariae C, Sommerlund M, Johansen JD. Occupational allergic contact dermatitis caused by tetrahydroxypropyl ethylenediamine in hand disinfectants. Contact Dermatitis 2022; 87:114-116. [PMID: 35320594 PMCID: PMC9111604 DOI: 10.1111/cod.14115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/20/2022] [Accepted: 03/21/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Maria Blomberg
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | - Anne Bregnhøj
- Department of Dermato-venerology, Aarhus University Hospital, Aarhus N, Denmark
| | - Ulrik Ahrensbøll-Friis
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark.,National Allergy Research Center, Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Claus Zachariae
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Mette Sommerlund
- Department of Dermato-venerology, Aarhus University Hospital, Aarhus N, Denmark
| | - Jeanne D Johansen
- National Allergy Research Center, Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
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12
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Emmanuel T, Petersen A, Houborg HI, Rønsholdt AB, Lybaek D, Steiniche T, Bregnhøj A, Iversen L, Johansen C. Climatotherapy at the Dead Sea for psoriasis is a highly effective anti-inflammatory treatment in the short term; an immunohistochemical study. Exp Dermatol 2022; 31:1136-1144. [PMID: 35196397 PMCID: PMC9541097 DOI: 10.1111/exd.14549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/19/2022] [Accepted: 02/20/2022] [Indexed: 12/04/2022]
Abstract
Climatotherapy is a well‐described treatment of psoriasis. Dead Sea climatotherapy (DSC) in Israel consists of intensive sun and Dead Sea bathing and is very effective in improving clinical and patient‐reported outcomes. However, the effect of DSC has not been widely studied. We aimed to investigate the effect of DSC on psoriasis skin using quantitative immunohistochemistry techniques and analysis of blood samples. Skin punch biopsies from 18 psoriasis patients from a previous cohort study were used. Biopsies were obtained from non‐lesional skin and from a psoriasis target lesion at baseline. A biopsy was acquired from the target lesion after DSC. Among patients who achieved complete visual clearance, a biopsy was also obtained at relapse. Blood samples were obtained at the same time points. We performed haematoxylin and eosin staining and quantitative immunohistochemical analysis of CD3, CD4, CD8, CD11c, CD103, CD163, CD207, forkhead box P3, Ki67 and myeloperoxidase. We performed blood tests of cholesterol, c‐reactive protein, glucose, haemoglobin A1c and triglycerides. All skin biomarkers except for CD207 were decreased after DSC. At relapse, none of the biomarkers were significantly different from the baseline lesional measurements. Total CD207 staining correlated with psoriasis area and severity index at baseline while CD163 staining correlated with psoriasis area and severity index at EOT. No changes were observed in selected blood tests during the study. Consistent with clinical results, DSC is highly effective in the short term almost normalising all investigated biomarkers. However, at relapse, biomarkers were upregulated to the baseline level.
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Affiliation(s)
- Thomas Emmanuel
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Annita Petersen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Dorte Lybaek
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Torben Steiniche
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Claus Johansen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
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13
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Jacobsen G, Rasmussen K, Bregnhøj A, Isaksson M, Diepgen TL, Carstensen O. Causes of irritant contact dermatitis after occupational skin exposure: a systematic review. Int Arch Occup Environ Health 2022; 95:35-65. [PMID: 34665298 PMCID: PMC8755674 DOI: 10.1007/s00420-021-01781-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 07/11/2021] [Indexed: 01/15/2023]
Abstract
PURPOSE Irritant contact dermatitis (ICD) is a major cause of occupational disease. The aim was to review the relation between exposure to occupational irritants and ICD and the prognosis of ICD. METHODS Through a systematic search, 1516 titles were identified, and 48 studies were included in the systematic review. RESULTS We found that the evidence for an association between ICD and occupational irritants was strong for wet work, moderate for detergents and non-alcoholic disinfectants, and strong for a combination. The highest quality studies provided limited evidence for an association with use of occlusive gloves without other exposures and moderate evidence with simultaneous exposure to other wet work irritants. The evidence for an association between minor ICD and exposure to metalworking fluids was moderate. Regarding mechanical exposures, the literature was scarce and the evidence limited. We found that the prognosis for complete healing of ICD is poor, but improves after decrease of exposure through change of occupation or work tasks. There was no substantial evidence for an influence of gender, age, or household exposures. Inclusion of atopic dermatitis in the analysis did not alter the risk of ICD. Studies were at risk of bias, mainly due to selection and misclassification of exposure and outcome. This may have attenuated the results. CONCLUSION This review reports strong evidence for an association between ICD and a combination of exposure to wet work and non-alcoholic disinfectants, moderate for metalworking fluids, limited for mechanical and glove exposure, and a strong evidence for a poor prognosis of ICD.
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Affiliation(s)
- Gitte Jacobsen
- Department of Occupational Medicine, Danish Ramazzini Centre, Regional Hospital West Jutland, University Research Clinic, Herning, Denmark.
- Department of Occupational Medicine, Hospital South West Jutland, University Hospital of Southern Denmark, Esbjerg, Denmark.
| | - Kurt Rasmussen
- Department of Occupational Medicine, Danish Ramazzini Centre, Regional Hospital West Jutland, University Research Clinic, Herning, Denmark
| | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Marléne Isaksson
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Lund University, Malmö, Sweden
| | - Thomas L Diepgen
- Department of Clinical Social Medicine, Occupational and Environmental Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Ole Carstensen
- Department of Occupational Medicine, Danish Ramazzini Centre, Regional Hospital West Jutland, University Research Clinic, Herning, Denmark
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14
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Nørreslet LB, Edslev SM, Bregnhøj A, Sommerlund M, Ebbehøj NE, Andersen PS, Agner T. Topical corticosteroids reduce the density of Staphylococcus aureus in hand eczema. J Eur Acad Dermatol Venereol 2021; 36:e318-e319. [PMID: 34843127 DOI: 10.1111/jdv.17844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/07/2021] [Accepted: 11/26/2021] [Indexed: 12/01/2022]
Affiliation(s)
- L B Nørreslet
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen NV, Denmark
| | - S M Edslev
- Department of Bacteria, parasites, and Fungi, Statens Serum Institute, Copenhagen S, Denmark
| | - A Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus N, Denmark
| | - M Sommerlund
- Department of Dermatology, Aarhus University Hospital, Aarhus N, Denmark
| | - N E Ebbehøj
- Department of Occupational and Environmental Medicine, Bispebjerg Hospital, University of Copenhagen, Copenhagen NV, Denmark
| | - P S Andersen
- Department of Bacteria, parasites, and Fungi, Statens Serum Institute, Copenhagen S, Denmark
| | - T Agner
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen NV, Denmark
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15
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Bregnhøj A, Thuesen KKH, Emmanuel T, Litman T, Grek CL, Ghatnekar GS, Johansen C, Iversen L. HSP90 inhibitor RGRN-305 for oral treatment of plaque type psoriasis: efficacy, safety and biomarker results in an open-label proof-of-concept study. Br J Dermatol 2021; 186:861-874. [PMID: 34748646 DOI: 10.1111/bjd.20880] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND HSP90 is a downstream regulator of tumor necrosis factor α (TNFα) and interleukin (IL)-17A signaling and may therefore serve as a novel target in the treatment of psoriasis. OBJECTIVE This phase 1b proof-of-concept study was undertaken to evaluate the safety and efficacy of a novel HSP90 inhibitor (RGRN-305) in the treatment of plaque psoriasis. METHODS An open-label, single-arm, dose-selection, single-center proof-of-concept study. Patients with plaque psoriasis were treated with 250 mg or 500 mg RGRN-305 daily for 12 weeks. Efficacy was evaluated clinically using Psoriasis Area and Severity Index (PASI), body surface area (BSA), and Physician Global Assessment (PGA) scores and by Dermatology Life Quality Index (DLQI). Skin biopsies collected at baseline and at 4, 8, and 12 weeks after treatment start were used for immunohistochemical staining and for gene expression analysis. Safety was monitored via laboratory tests, vital signs, ECG, and physical examinations. RESULTS Six of the eleven patients completing the study responded to RGRN-305 with a PASI improvement between 71% and 94%, whereas five patients were considered nonresponders with a PASI response < 50%. No severe adverse events were reported. Four of seven patients treated with 500 mg RGRN-305 daily experienced a mild to moderate exanthematous drug induced eruption due to study treatment. Two patients chose to discontinue the study due to this exanthematous eruption. RGRN-305 treatment resulted in pronounced inhibition of the IL-23, TNFα, and IL-17A signaling pathways and normalization of both histological changes and psoriatic lesion gene expression profiles in patients responding to treatment. CONCLUSION Treatment with RGRN-305 showed an acceptable safety, especially in the low-dose group, and was associated with clinically meaningful improvement in a subset of patients with plaque psoriasis, indicating that HSP90 may serve as a novel future target in psoriasis treatment.
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Affiliation(s)
- A Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - K K H Thuesen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - T Emmanuel
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - T Litman
- Department of Immunology and Microbiology, University of Copenhagen, 2200, Copenhagen, Denmark
| | - C L Grek
- FirstString Research, Mount Pleasant, SC, 29464, USA
| | | | - C Johansen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - L Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
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16
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Loft N, Bregnhøj A, Fage S, Nielsen CH, Enevold C, Zachariae C, Iversen L, Skov L. Effectiveness of brodalumab after previous treatment failure of interleukin-17A inhibitors in patients with psoriasis. Dermatol Ther 2021; 34:e15106. [PMID: 34418225 DOI: 10.1111/dth.15106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/16/2021] [Indexed: 12/19/2022]
Abstract
Studies on switch between interleukin (IL)-17 inhibitors are scarce. We assessed the effectiveness of brodalumab in patients with previous treatment failure of IL-17A inhibitor(s). Patients with psoriasis and previous treatment failure of an IL-17A inhibitor were treated with brodalumab at standard dose. Effectiveness was assessed after 12, 26, and 52 weeks of treatment. The primary outcome was the proportion of patients that had achieved an absolute psoriasis area and severity index (PASI) ≤2 and/or a relative reduction of PASI of 75% (PASI75) at week 12. Plasma cytokine levels were measured at baseline and after 12 weeks of treatment. In total, 20 patients were included, seven (35%) were female, the median age was 50 years, and the median baseline PASI was 13.5. Analyzing the data using nonresponder imputation, 14 (70%) patients had achieved either PASI75 and/or PASI ≤2, 8 (40%) had achieved PASI90, and three (15%) had achieved PASI100 at week 12. In total, nine patients (45%) completed the 52-weeks trial and seven patients (35%) still had PASI75 throughout 52 weeks. Seventeen out of 20 patients experienced any adverse events (AEs) during 52 weeks with no serious AEs or deaths. Patients responding to treatment had lower levels of tumor necrosis factor (TNF)-α and IL-6 at baseline compared with those who did not respond to treatment (TNF-α, p = 0.041, IL-6, p = 0.0054). In conclusion, treatment with brodalumab despite previous treatment failure with an IL-17A inhibitor can be effective and well-tolerated.
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Affiliation(s)
- Nikolai Loft
- Department of Dermatology and Allergy, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark.,Copenhagen Research Group for Inflammatory Skin, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University, Denmark
| | - Simon Fage
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Claus Henrik Nielsen
- Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Christian Enevold
- Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Claus Zachariae
- Department of Dermatology and Allergy, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark.,Copenhagen Research Group for Inflammatory Skin, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark.,Institute of Clinical Medicine, Aarhus University, Denmark
| | - Lone Skov
- Department of Dermatology and Allergy, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark.,Copenhagen Research Group for Inflammatory Skin, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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Emmanuel T, Mistegård J, Bregnhøj A, Johansen C, Iversen L. Tissue-Resident Memory T Cells in Skin Diseases: A Systematic Review. Int J Mol Sci 2021; 22:ijms22169004. [PMID: 34445713 PMCID: PMC8396505 DOI: 10.3390/ijms22169004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/09/2021] [Accepted: 08/17/2021] [Indexed: 02/06/2023] Open
Abstract
In health, the non-recirculating nature and long-term persistence of tissue-resident memory T cells (TRMs) in tissues protects against invading pathogens. In disease, pathogenic TRMs contribute to the recurring traits of many skin diseases. We aimed to conduct a systematic literature review on the current understanding of the role of TRMs in skin diseases and identify gaps as well as future research paths. EMBASE, PubMed, SCOPUS, Web of Science, Clinicaltrials.gov and WHO Trials Registry were searched systematically for relevant studies from their inception to October 2020. Included studies were reviewed independently by two authors. This study was conducted in accordance with the PRISMA-S guidelines. This protocol was registered with the PROSPERO database (ref: CRD42020206416). We identified 96 studies meeting the inclusion criteria. TRMs have mostly been investigated in murine skin and in relation to infectious skin diseases. Pathogenic TRMs have been characterized in various skin diseases including psoriasis, vitiligo and cutaneous T-cell lymphoma. Studies are needed to discover biomarkers that may delineate TRMs poised for pathogenic activity in skin diseases and establish to which extent TRMs are contingent on the local skin microenvironment. Additionally, future studies may investigate the effects of current treatments on the persistence of pathogenic TRMs in human skin.
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18
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Hansen RS, Thuesen KKH, Bregnhøj A, Moldovan LI, Kristensen LS, Grek CL, Ghatnekar GS, Iversen L, Johansen C. The HSP90 inhibitor RGRN-305 exhibits strong immunomodulatory effects in human keratinocytes. Exp Dermatol 2021; 30:773-781. [PMID: 33583094 DOI: 10.1111/exd.14302] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/28/2021] [Accepted: 02/10/2021] [Indexed: 12/11/2022]
Abstract
Keratinocytes are the key cellular target for IL-17A-mediated effects in psoriasis and HSP90 is important for IL-17A-mediated signalling. RGRN-305 is a novel HSP90 inhibitor reported to reduce psoriatic phenotypes in preclinical animal models. The aim of this study was to investigate the effect of RGRN-305 on a psoriasis-like inflammatory response in human keratinocytes in vitro. Using RT-qPCR, we demonstrated a significantly increased expression of the HSP90 isoforms HSP90AB1, HSP90B1 and TRAP1 in lesional compared with non-lesional psoriatic skin. In a psoriasis-like setting where keratinocytes were stimulated with TNFα and/or IL-17A, we analysed the mRNA expression using the NanoString nCounter technology and demonstrated that the HSP90 inhibitor RGRN-305 significantly reduced the IL-17A- and TNFα-induced gene expression of a number of proinflammatory genes, including the psoriasis-associated genes CCL20, NFKBIZ, IL36G and IL23A. In agreement with the mRNA data, the protein level of CCL20, IκBζ and IL-36γ were inhibited by RGRN-305 as demonstrated by western blotting and ELISA. Interestingly, when keratinocytes were stimulated with a TLR3 agonist, RGRN-305 also demonstrated potent immunomodulatory effects, significantly inhibiting poly(I:C)-induced expression of the proinflammatory genes TNFα, IL1B, IL6 and IL23A. Taken together, our data support a role for HSP90 not only in the pathogenesis of psoriasis, but also in broader immune responses. Therefore, HSP90 provides an attractive target for the treatment of psoriasis and other diseases where the innate immune system plays an important role.
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Affiliation(s)
- Rikke S Hansen
- Department of Dermatology, Aarhus University Hospital, Aarhus N, Denmark
| | | | - Anne Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus N, Denmark
| | - Liviu I Moldovan
- Department of Molecular Biology and Genetics (MBG), Aarhus University, Aarhus, Denmark.,Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
| | | | | | - Gautam S Ghatnekar
- FirstString Research, Mount Pleasant, SC, USA.,Regranion, Mount Pleasant, SC, USA
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus N, Denmark
| | - Claus Johansen
- Department of Dermatology, Aarhus University Hospital, Aarhus N, Denmark
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19
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Tracz ES, Sommerlund M, Bregnhøj A. Pustular allergic contact dermatitis caused by a sunscreen. Contact Dermatitis 2020; 83:328-329. [DOI: 10.1111/cod.13621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/19/2020] [Accepted: 05/24/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Eva S. Tracz
- Department of Dermato‐venereology Aarhus University Hospital Aarhus Denmark
| | - Mette Sommerlund
- Department of Dermato‐venereology Aarhus University Hospital Aarhus Denmark
| | - Anne Bregnhøj
- Department of Dermato‐venereology Aarhus University Hospital Aarhus Denmark
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20
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Bregnhøj A, Sommerlund M. Severe bullous allergic contact dermatitis caused by diethylthiourea 20 years after sensitization to neoprene. Contact Dermatitis 2018; 76:236-237. [PMID: 28317196 DOI: 10.1111/cod.12766] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/22/2016] [Accepted: 12/23/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Anne Bregnhøj
- Department of Dermato-Venereology, Aarhus University Hospital, 8000 Aarhus C, Denmark
| | - Mette Sommerlund
- Department of Dermato-Venereology, Aarhus University Hospital, 8000 Aarhus C, Denmark
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21
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Todberg T, Zachariae C, Bregnhøj A, Hedelund L, Bonefeld KK, Nielsen K, Iversen L, Skov L. The effect of botulinum neurotoxin A in patients with plaque psoriasis - an exploratory trial. J Eur Acad Dermatol Venereol 2017; 32:e81-e82. [PMID: 28833574 DOI: 10.1111/jdv.14536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- T Todberg
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - C Zachariae
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - A Bregnhøj
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - L Hedelund
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - L Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - L Skov
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
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Steengaard SS, Bregnhøj A, Johansen JD. Hand eczema among hairdressing apprentices in Denmark following a nationwide prospective intervention programme: 6-year follow-up. Contact Dermatitis 2016; 75:32-40. [DOI: 10.1111/cod.12588] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 03/06/2016] [Accepted: 03/07/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Sanne S. Steengaard
- Research Centre for Hairdressers and Beauticians, Department of Dermato-Allergology; University Hospital Gentofte; 2900 Hellerup Denmark
| | - Anne Bregnhøj
- Research Centre for Hairdressers and Beauticians, Department of Dermato-Allergology; University Hospital Gentofte; 2900 Hellerup Denmark
| | - Jeanne D. Johansen
- Research Centre for Hairdressers and Beauticians, Department of Dermato-Allergology; University Hospital Gentofte; 2900 Hellerup Denmark
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Bregnhøj A, Søsted H, Menné T, Johansen JD. Validation of self-reporting of hand eczema among Danish hairdressing apprentices. Contact Dermatitis 2011; 65:146-50. [DOI: 10.1111/j.1600-0536.2011.01908.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Abstract
BACKGROUND Early and extensive exposures to chemical substances such as are found in hair dyes, perfumes and nickel are known risk factors for allergic reactions. Hairdressing apprentices belong to a high-risk group, as they are exposed both occupationally and personally. OBJECTIVES To estimate the degree of exposure and adverse skin reactions to chemical substances in a cohort of hairdressing apprentices, at the start of their education, as compared with a matched sample from the general population. MATERIALS During their first 2 weeks of training, 382 hairdressing apprentices were enrolled in this study. All apprentices completed a self-administered questionnaire that included questions regarding, for example, exposures and skin reactions to hair dye, perfumed products, and piercings. For comparison, the questionnaire was sent to a control group from the general population, matched on age, sex, and postal code (n = 1870). RESULTS Within the previous year, 95.2% of hairdressing apprentices and 66.9% of the control group had dyed their hair (p < 0.001); the apprentices dyed their hair, on average, 6.6 times per year, as compared with 3.7 times per year in the control group (p < 0.001). The mean age of the first hair dying among the apprentices was 12.1 years, as compared with 13.3 years for the matched control group (p < 0.001). The hairdressing apprentices reported more eczematous reactions to hair dye (p = 0.002) than the controls. Semi-permanent so-called 'black henna tattoos' had been carried out in 48.1% of the apprentices, as compared with 31.0% of the controls (p < 0.001). CONCLUSIONS Both hairdressing apprentices and the matched control group of young people from the general population were highly exposed to potent allergens. The hairdressing apprentices were even more exposed to products containing hair dye substances and piercings, and reported more adverse reactions to hair dye products than their matched controls from the general population.
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Affiliation(s)
- Anne Bregnhøj
- Research Centre for Hairdressers and Beauticians, Department of Dermato-Allergology, Copenhagen University Hospital Gentofte, DK-2900 Hellerup, Denmark.
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Bregnhøj A, Haedersdal M. Q-switched YAG laser vs. punch biopsy excision for iatrogenic radiation tattoo markers--a randomized controlled trial. J Eur Acad Dermatol Venereol 2011; 24:1183-6. [PMID: 20236380 DOI: 10.1111/j.1468-3083.2010.03617.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Ink markers are tattooed as landmarks before radiotherapy of breast cancer with the purpose of obtaining a precise radiation field. The black tattoo spots may cause potential psychological distress for the affected women. OBJECTIVE The objective of this study was to evaluate the efficacy and adverse effects in a side-by-side comparison of Q-switched (Q-sw) YAG laser vs. punch biopsy excision of iatrogenic radiation tattoo markers. METHODS Ten female volunteers with black tattoo markers after previous radiotherapy for breast cancer were included. Subjects received one punch biopsy excision and a series of three treatments at 6-week intervals with Q-sw YAG laser (Q-YAG 5 system, 1064 nm, Palomar Inc., Burlington, VT, USA); the interventions was randomly assigned to two closely located tattoos (n = 20). Treatment measures were evaluated 12 weeks after final treatment and included clinical efficacy, patient satisfaction, preferred treatment and adverse effects. A blinded observer evaluated the efficacy and adverse effects from photographs. RESULTS Ten patients completed the study. Blinded photographic evaluations showed an overall excellent clearance (75-100% reduction in tattoo appearance) from both excision and laser treatments (P = 0.317). Patients were equally satisfied with Q-sw YAG laser treatment [median 9 (5.75-10, 25-75 percentiles)] and excision therapy [median 10 (5.75-10)] (P = 0.672). However, the majority of the patients preferred YAG laser (n = 8) to excision (n = 2) (P = 0.022) because adverse effects in terms of hypopigmentation (0/10 vs. 8/10 patients) and scarring (1/10 vs. 8/10 patients) occurred more frequently and appeared more pronounced in excision biopsy (hypopigmentation P = 0.014, scarring P = 0.021). CONCLUSION Q-sw YAG laser and punch biopsy excision are effective to clear iatrogenic radiation tattoo markers, but patients preferred the laser treatment because of less pronounced adverse effects.
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Affiliation(s)
- A Bregnhøj
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
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27
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Affiliation(s)
- A Bregnhøj
- Department of Dermatology and Allergology, Research Centre for Hairdressers and Beauticians, Gentofte Hospital, University of Copenhagen, Dk-2900 Hellerup, Denmark.
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Thyssen JP, Milting K, Bregnhøj A, Søsted H, Duus Johansen J, Menné T. Nickel allergy in patch-tested female hairdressers and assessment of nickel release from hairdressers' scissors and crochet hooks. Contact Dermatitis 2010; 61:281-6. [PMID: 19878243 DOI: 10.1111/j.1600-0536.2009.01624.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Hand eczema as well as nickel contact allergy is prevalent among hairdressers. Recently, two female hairdressers were diagnosed with nickel contact allergy-related hand eczema following prolonged skin contact with scissors and crochet hooks used during work. OBJECTIVES To determine the proportion of hairdressers' scissors and crochet hooks that released an excessive amount of nickel and to determine the prevalence of nickel allergy among patch-tested female hairdressers. MATERIALS Random hairdressers' stores in Copenhagen were visited. The dimethylglyoxime (DMG) test was used to assess excessive nickel release. The prevalence of nickel allergy among female hairdressers from the database at Gentofte Hospital was compared with the prevalence of nickel allergy among other consecutively patch-tested dermatitis patients. RESULTS DMG testing showed that 1 (0.5%; 95% CI = 0 - 2.0) of 200 pairs of scissors and 7 (53.8%; 95% CI = 26.0 - 82.0) of 13 crochet hooks released an excessive amount of nickel. The prevalence of nickel allergy was higher among middle-aged and older female hairdressers than among young female hairdressers. CONCLUSIONS The prevalence of nickel allergy was lower among young hairdressers in comparison to older hairdressers. This may possibly be a result of the European Union (EU) Nickel Directive or a consequence of a decreased use of nickel-releasing work tools in salons. When nickel allergic hairdressers present with hand eczema, their work tools should be investigated for nickel release.
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Affiliation(s)
- Jacob Pontoppidan Thyssen
- National Allergy Research Centre, Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Denmark
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Bregnhøj A, Menné T. Primary sensitization to toluene-2,5-diamine giving rise to early positive patch reaction top-phenylenediamine and late to toluene-2,5-diamine. Contact Dermatitis 2008; 59:189-90. [DOI: 10.1111/j.1600-0536.2008.01407.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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