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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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Fritz B, Halling AS, Cort IDP, Christensen MO, Rønnstad ATM, Olesen CM, Knudgaard MH, Zachariae C, Heegaard S, Thyssen JP, Bjarnsholt T. RNA-sequencing of paired tape-strips and skin biopsies in atopic dermatitis reveals key differences. Allergy 2024. [PMID: 38477552 DOI: 10.1111/all.16086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/30/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Skin tape-strips and biopsies are widely used methods for investigating the skin in atopic dermatitis (AD). Biopsies are more commonly used but can cause scarring and pain, whereas tape-strips are noninvasive but sample less tissue. The study evaluated the performance of skin tape-strips and biopsies for studying AD. METHODS Whole-transcriptome RNA-sequencing was performed on paired tape-strips and biopsies collected from lesional and non-lesional skin from AD patients (n = 7) and non-AD controls (n = 5). RNA yield, mapping efficiency, and differentially expressed genes (DEGs) for the two methods (tape-strip/biopsy) and presence of AD (AD/non-AD) were compared. RESULTS Tape-strips demonstrated a lower RNA yield (22 vs. 4596 ng) and mapping efficiency to known genes (28% vs. 93%) than biopsies. Gene-expression profiles of paired tape-strips and biopsies demonstrated a medium correlation (R2 = 0.431). Tape-strips and biopsies demonstrated systematic differences in measured expression levels of 6483 genes across both AD and non-AD samples. Tape-strips preferentially detected many itch (CCL3/CCL4/OSM) and immune-response (CXCL8/IL4/IL5/IL22) genes as well as markers of epidermal dendritic cells (CD1a/CD207), while certain cytokines (IL18/IL37), skin-barrier genes (KRT2/FLG2), and dermal fibroblasts markers (COL1A/COL3A) were preferentially detected by biopsies. Tape-strips identified more DEGs between AD and non-AD (3157 DEGs) then biopsies (44 DEGs). Tape-strips also detected higher levels of bacterial mRNA than biopsies. CONCLUSIONS This study concludes that tape-strips and biopsies each demonstrate respective advantages for measuring gene-expression changes in AD. Thus, the specific skin layers and genes of interest should be considered before selecting either method.
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Affiliation(s)
- Blaine Fritz
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen N, Denmark
| | | | - Isabel Díaz-Pinés Cort
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen N, Denmark
| | | | | | | | | | - Claus Zachariae
- Department of Allergy, Skin, and Venereology, Gentofte Hospital, Gentofte, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen N, Denmark
| | - Steffen Heegaard
- Department of Clinical Medicine, University of Copenhagen, Copenhagen N, Denmark
| | - Jacob P Thyssen
- Department of Dermatology, Bispebjerg Hospital, Copenhagen NV, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen N, Denmark
| | - Thomas Bjarnsholt
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen N, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen N, Denmark
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Christensen MO, Barakji YA, Loft N, Khatib CM, Egeberg A, Thomsen SF, Silverberg JI, Flohr C, Maul JT, Schmid-Grendelmeier P, Halling AS, Vittrup I, Thyssen JP. Prevalence of and association between atopic dermatitis and food sensitivity, food allergy and challenge-proven food allergy: A systematic review and meta-analysis. J Eur Acad Dermatol Venereol 2023; 37:984-1003. [PMID: 36695076 DOI: 10.1111/jdv.18919] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/13/2023] [Indexed: 01/26/2023]
Abstract
Atopic dermatitis (AD) and food allergy (FA) share similar type 2 inflammation and commonly co-occur, but the precise proportion of AD patients with FA and vice versa, as well as the effect of AD disease severity on the strength of this association remains uncertain. The aim of this comprehensive systematic review and meta-analysis was to determine the prevalence and bidirectional associations of AD with food sensitivity (FS), FA and challenge-proven food allergy (CPFA). We searched PubMed and EMBASE and three independent reviewers performed title/abstract and full-text review and data extraction. Overall, 557 articles (n = 225,568 individuals with AD, n = 1,128,322 reference individuals; n = 1,357,793 individuals with FS, FA or CPFA, n = 1,244,596 reference individuals) were included in quantitative analyses. The overall pooled prevalence of FS, FA and CPFA in individuals with AD were 48.4% (95% confidence interval: 43.7-53.2), 32.7% (28.8-36.6) and 40.7% (34.1-47.5) respectively. AD prevalence among individuals with FS, FA and CPFA were 51.2% (46.3-56.2), 45.3% (41.4-49.3) and 54.9% (47.0-62.8) respectively. Children with AD had higher pooled FS (49.8% (44.4-55.1)) and FA (31.4% (26.9-36.1)) prevalences than adults with AD (28.6% (13.4-46.8) and 24.1% (12.1-38.7) respectively). Prevalences of FS and FA numerically increased with AD severity. FS, FA and CPFA are common comorbidities of AD and are closely related. Physicians should be attentive to this relationship to optimize management and treatment strategies in patients.
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Affiliation(s)
- M O Christensen
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Y A Barakji
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - N Loft
- Department of Dermatology and Allergy, Copenhagen University Hospital - Herlev and Gentofte, Hellerup, Denmark
| | - C M Khatib
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - A Egeberg
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - S F Thomsen
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - J I Silverberg
- George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA
| | - C Flohr
- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, King's College London, London, UK.,Guy's & St Thomas NHS Foundation Trust, London, UK
| | - J T Maul
- Allergy Unit, Department of Dermatology, University of Zürich, Zürich, Switzerland
| | | | - A S Halling
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark.,Department of Dermatology and Allergy, Copenhagen University Hospital - Herlev and Gentofte, Hellerup, Denmark
| | - I Vittrup
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark.,Department of Dermatology and Allergy, Copenhagen University Hospital - Herlev and Gentofte, Hellerup, Denmark
| | - J P Thyssen
- Department of Dermatology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
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