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Bennett R, Bradley K, Stevanovic M, McFadden JR, Chaudhari AS, Ramos-Rodriguez AJ, Yan S, Momtahen S, LeBlanc RE, Cloutier JM, Salem I, Grand DG, Hodson EL, Sriharan A. Anti-PL-7, anti-Ro/SSA, anti-Mi-2, and anti-TIF1-γ correlate with specific patterns of histopathologic features in dermatomyositis: An analysis of 39 skin biopsy specimens from 25 patients. J Cutan Pathol 2024; 51:317-326. [PMID: 38158735 DOI: 10.1111/cup.14578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 11/24/2023] [Accepted: 12/06/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND In dermatomyositis (DM), myositis-specific and myositis-associated antibodies have been correlated with clinical features. It is unknown if histopathologic findings in lesional skin biopsies correlate with serologic subtypes of DM. METHODS A retrospective chart review of patients with DM was performed. Patients with myositis antibodies and DM lesional skin biopsies were included in the study. Skin biopsies were reviewed by blinded dermatopathologists for 20 histopathologic features. RESULTS There was a statistically significant (p < 0.05) association between anti-PL-7 serology and decreased degree of vacuolar degeneration, necrotic keratinocytes, and thickening of the epidermal basement membrane. Anti-aminoacyl tRNA synthetase (anti-ARS) antibodies had the same significant negative association with degree of vacuolar degeneration, necrotic keratinocytes, and thickening of the epidermal basement membrane. A similar pattern was seen with an anti-cytoplasmic serology; where there was a significant association with an increased degree of vacuolar degeneration and necrotic keratinocytes, and a nonsignificant trend of minimally thickened epidermal basement membrane. There was a statistically significant association between anti-Ro/SSA serology and increased degree of vacuolar degeneration. Anti-TIF1-γ serology was significantly associated with the increased presence of necrotic keratinocytes and pigment incontinence, and displayed a pattern of increased neutrophils. There was a significant association between anti-Mi-2 antibodies and pigment incontinence, as well as between myositis-specific antibodies and pigment incontinence. A statistically significant positive association was found between nuclear antibodies and degree of vacuolar degeneration, thickened epidermal basement membrane, pigment incontinence, and epidermal atrophy. CONCLUSION In patients with DM, some specific serotypes, including anti-PL-7, anti-Ro/SSA, anti-Mi-2, and anti-TIF1-γ, may have characteristic histopathologic features.
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Affiliation(s)
- Raven Bennett
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
| | | | | | - Jason R McFadden
- National Institutes of Health, National Human Genome Research Institute, Undiagnosed Diseases Program, Rockville, Maryland, USA
| | | | - Alvaro J Ramos-Rodriguez
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Shaofeng Yan
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Shabnam Momtahen
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Robert E LeBlanc
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Jeffrey M Cloutier
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Iman Salem
- Department of Dermatology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - David G Grand
- Department of Dermatology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Emma L Hodson
- Department of Dermatology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Aravindhan Sriharan
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
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Cassard L, Seraly N, Riegert M, Patel A, Fernandez AP. Dermatomyositis: Practical Guidance and Unmet Needs. Immunotargets Ther 2024; 13:151-172. [PMID: 38464459 PMCID: PMC10924937 DOI: 10.2147/itt.s381472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/13/2024] [Indexed: 03/12/2024] Open
Abstract
Dermatomyositis is a heterogeneous idiopathic inflammatory myopathy associated with various cutaneous manifestations and variable presence of myositis, interstitial lung disease, and other visceral organ involvement. An accurate diagnosis of dermatomyositis requires correlating clinical examination findings with serological and histological findings. Familiarity with pathognomonic and common cutaneous manifestations of dermatomyositis, which are highlighted here, can be especially helpful in making an accurate diagnosis. Additionally, evaluating patients for presence of myositis-specific autoantibodies can further support or refute a dermatomyositis diagnosis. When present, myositis-specific autoantibodies can also help guide workups for various dermatomyositis-associated manifestations, as each is associated with relatively distinct clinical characteristics. Evaluating patients for various systemic manifestations often relies on expert opinion recommendations; however, societal guideline statements concerning the evaluation of some manifestations have recently been described. Although malignancy-associated dermatomyositis is a well-accepted subtype, there is limited evidence to support extensive malignancy screening has a favorable benefit-risk ratio in most dermatomyositis patients. However, recent research has uncovered novel associations between dermatomyositis and malignancy, suggesting the possibility of identifying high-risk subsets of dermatomyositis patients in whom malignancy screening may have a high value. Treatment for dermatomyositis has remained largely unchanged over the past several decades. Although many dermatomyositis patients can be effectively treated with current options, either as monotherapy or with combination regimens, there is a need for more targeted and effective DM therapies, in general, and for MDA5(+) dermatomyositis-associated rapidly progressive interstitial lung disease. Fortunately, significant current and emerging research activities evaluating various novel medications for dermatomyositis provide hope for exciting future advances in patients with this intriguing immune-mediated disease.
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Affiliation(s)
- Lydia Cassard
- Cleveland Clinic Lerner College of Medicine at Case Western Reserve University, Cleveland, OH, USA
| | - Noelle Seraly
- Department of Dermatology, Cleveland Clinic, Cleveland, OH, USA
| | - Maureen Riegert
- Department of Dermatology, Rush University, Chicago, IL, USA
| | - Aditi Patel
- Department of Rheumatology, Cleveland Clinic, Cleveland, OH, USA
| | - Anthony P Fernandez
- Departments of Dermatology and Pathology, Cleveland Clinic, Cleveland, OH, USA
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3
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Caro-Chang LA, Fung MA. The role of eosinophils in the differential diagnosis of inflammatory skin diseases. Hum Pathol 2023; 140:101-128. [PMID: 37003367 DOI: 10.1016/j.humpath.2023.03.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023]
Abstract
Eosinophils are known to be present in inflammatory skin diseases, but their diagnostic utility is not well established. Upon review of the published status of lesional eosinophils, several categories were identified. 1) Lesional eosinophils highly characteristic such that, in their absence, the pathologist may question the diagnosis. These include arthropod bite reactions and scabies, urticarial dermatitis, and other eosinophilic dermatoses. 2) Lesional eosinophils rare or absent, such that, in their presence, the pathologist may question the diagnosis. These include pityriasis lichenoides, graft versus host disease, and connective tissue disorders. 3) Lesional eosinophils variable and, while in some cases expected, are not required for diagnosis. These include drug reactions, atopic dermatitis and allergic contact dermatitis. 4) Lesional eosinophils variable and not expected but may be seen to a limited extent. These include lichen planus and psoriasis.
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4
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Pruessmann W, Kleinheinz A, Zillikens D, Rose C. Histopathological risk factors for malignancy in dermatomyositis. Histopathology 2022; 81:529-535. [PMID: 35876260 DOI: 10.1111/his.14727] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 11/30/2022]
Abstract
AIMS To identify possible histopathological risk factors for malignancy in skin biopsies of dermatomyositis patients. METHODS AND RESULTS We analysed clinical metadata and studied 30 skin biopsies of 11 patients with and 12 patients without associated malignancy that were treated in one secondary and one tertiary German medical center between 2009 and 2022 and fulfilling the EULAR/ACR classification criteria for dermatomyositis. Specimens were categorized by malignancy status and evaluated based on H&E, PAS, Alcian Blue and anti-CD123 immunohistochemistry stains. After correcting for multiple testing, biopsies of patients with cancer exhibited more severe basement membrane thickening (p<0.05) and pigment incontinence (p<0.05) compared to patients without tumour burden. Patients with numerous subepidermal melanophages had a more than 5-times increased odds ratio to suffer from an internal malignancy (OR 5.3, 95%CI 1.3-54.2, p<0.05). Furthermore, specimens of the malignancy group presented a distinct superficial distribution pattern of CD123+ plasmacytoid dendritic cells (PDCs, p<0.01). Extravascular eosinophils were absent in all cases. CONCLUSIONS Severity of basement membrane thickening, extent of pigment incontinence and superficial distribution pattern of CD123+ PDCs could serve as useful histopathological indicators of risk for malignancy in dermatomyositis.
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Affiliation(s)
- Wiebke Pruessmann
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Andreas Kleinheinz
- Department of Dermatology, Clinical Centre Buxtehude, Am Krankenhaus 1, 21614, Buxtehude, Germany
| | - Detlef Zillikens
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Christian Rose
- Department of Dermatology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.,Dermatopathology Lübeck, Maria-Goeppert-Str. 5, 23562, Lübeck, Germany
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5
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Huang P, Tang L, Zhang L, Ren Y, Peng H, Xiao Y, Xu J, Mao D, Liu L, Liu L. Identification of Biomarkers Associated With CD4+ T-Cell Infiltration With Gene Coexpression Network in Dermatomyositis. Front Immunol 2022; 13:854848. [PMID: 35711463 PMCID: PMC9196312 DOI: 10.3389/fimmu.2022.854848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/27/2022] [Indexed: 12/19/2022] Open
Abstract
Background Dermatomyositis is an autoimmune disease characterized by damage to the skin and muscles. CD4+ T cells are of crucial importance in the occurrence and development of dermatomyositis (DM). However, there are few bioinformatics studies on potential pathogenic genes and immune cell infiltration of DM. Therefore, this study intended to explore CD4+ T-cell infiltration–associated key genes in DM and construct a new model to predict the level of CD4+ T-cell infiltration in DM. Methods GSE46239, GSE142807, GSE1551, and GSE193276 datasets were downloaded. The WGCNA and CIBERSORT algorithms were performed to identify the most correlated gene module with CD4+ T cells. Matascape was used for GO enrichment and KEGG pathway analysis of the key gene module. LASSO regression analysis was used to identify the key genes and construct the prediction model. The correlation between the key genes and CD4+ T-cell infiltration was investigated. GSEA was performed to research the underlying signaling pathways of the key genes. The key gene-correlated transcription factors were identified through the RcisTarget and Gene-motif rankings databases. The miRcode and DIANA-LncBase databases were used to build the lncRNA-miRNA-mRNA network. Results In the brown module, 5 key genes (chromosome 1 open reading frame 106 (C1orf106), component of oligomeric Golgi complex 8 (COG8), envoplakin (EVPL), GTPases of immunity-associated protein family member 6 (GIMAP6), and interferon-alpha inducible protein 6 (IFI6)) highly associated with CD4+ T-cell infiltration were identified. The prediction model was constructed and showed better predictive performance in the training set, and this satisfactory model performance was validated in another skin biopsy dataset and a muscle biopsy dataset. The expression levels of the key genes promoted the CD4+ T-cell infiltration. GSEA results revealed that the key genes were remarkably enriched in many immunity-associated pathways, such as JAK/STAT signaling pathway. The cisbp_M2205, transcription factor-binding site, was enriched in C1orf106, EVPL, and IF16. Finally, 3,835 lncRNAs and 52 miRNAs significantly correlated with key genes were used to build a ceRNA network. Conclusion The C1orf106, COG8, EVPL, GIMAP6, and IFI6 genes are associated with CD4+ T-cell infiltration. The prediction model constructed based on the 5 key genes may better predict the level of CD4+ T-cell infiltration in damaged muscle and lesional skin of DM. These key genes could be recognized as potential biomarkers and immunotherapeutic targets of DM.
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Affiliation(s)
- Peng Huang
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Li Tang
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Lu Zhang
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yi Ren
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Hong Peng
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yangyang Xiao
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Jie Xu
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Dingan Mao
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Lingjuan Liu
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
- *Correspondence: Liqun Liu, ; Lingjuan Liu,
| | - Liqun Liu
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, China
- Children’s Brain Development and Brain injury Research Office, The Second Xiangya Hospital of Central South University, Changsha, China
- *Correspondence: Liqun Liu, ; Lingjuan Liu,
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6
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Shakshouk H, Deschaine MA, Wetter DA, Drage LA, Ernste FC, Gibson LE, Lehman JS. Do histopathological features correlate with systemic manifestations in dermatomyositis? Analysis of 42 skin biopsy specimens from 22 patients. J Cutan Pathol 2022; 49:442-447. [PMID: 35080246 DOI: 10.1111/cup.14203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 01/05/2022] [Accepted: 01/22/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Understanding whether specific histopathologic features on skin biopsy are predictive of systemic associations in dermatomyositis would be useful to guide clinical screening. METHODS Via retrospective medical record search, clinical and laboratory findings of patients with dermatomyositis were documented. Existing skin biopsy slides were re-reviewed blindly. RESULTS Of all biopsy specimens (n=42), the most frequent histopathological finding was vacuolar interface dermatitis (95%). Other features included perivascular lymphocytic infiltrate (71%), increased dermal mucin (40%), vessel wall thickening (12%), follicular plugging (9.5%) and dermal sclerosis (7%). Neutrophilic infiltrate was observed in 3 biopsies from a patient with adualimumab-associated DM. Vasculitis was not observed. There was no statistically significant difference in the presence of any histopathological feature and that of various systemic manifestations [i.e. myopathy, interstitial lung disease (ILD) and malignancy]. However, we observed that dense lichenoid infiltrate rather than pauci-inflammatory changes correlated with severe itching (p < 0.001) Patients with MDA-5 antibodies were significantly more likely to have vasculopathy than those without (p=0.029*). CONCLUSIONS No dermatopathological feature was reliably predictive of myopathy, ILD or malignancy. This finding implies that regardless of histopathologic findings, patients should be screened for associated conditions, as clinically indicated.
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Affiliation(s)
| | - Maria A Deschaine
- Department of Dermatology, Florida State University, Tallahassee, FL, USA
| | - David A Wetter
- Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Lisa A Drage
- Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | | | - Lawrence E Gibson
- Department of Dermatology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Julia S Lehman
- Department of Dermatology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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7
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Identification of Latent Diagnostic Biomarkers and Biological Pathways in Dermatomyositis Based on WGCNA. JOURNAL OF ONCOLOGY 2022; 2021:1920111. [PMID: 35003257 PMCID: PMC8736700 DOI: 10.1155/2021/1920111] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 11/17/2022]
Abstract
Introduction Dermatomyositis (DM) is a chronic autoimmune disease of predominantly lymphocytic infiltration mainly involving the transverse muscle. Its pathogenesis is remaining unknown. This research is designed to probe the latent pathogenesis of dermatomyositis, identify potential biomarkers, and reveal the pathogenesis of dermatomyositis through information biology analysis of gene chips. Methods In this study, we utilised the GSE14287 and GSE11971 datasets rooted in the Gene Expression Omnibus (GEO) databank, which included a total of 62 DM samples and 9 normal samples. The datasets were combined, and the differentially expressed gene sets were subjected to weighted gene coexpression network analysis, and the hub gene was screened using a protein interaction network from genes in modules highly correlated with dermatomyositis progression. Results A total of 3 key genes-myxovirus resistance-2 (MX2), oligoadenylate synthetase 1 (OAS1), and oligoadenylate synthetase 2 (OAS2)-were identified in combination with cell line samples, and the expressions of the 3 genes were verified separately. The results showed that MX2, OAS1, and OAS2 were highly expressed in LPS-treated cell lines compared to normal cell lines. The results of pathway enrichment analysis of the genes indicated that all 3 genes were enriched in the cytosolic DNA signalling and cytokine and cytokine receptor interaction signalling pathways; the results of functional enrichment analysis showed that all 3 were enriched in interferon-α response and interferon-γ response functions. Conclusions This is important for the study of the pathogenesis and objective treatment of dermatomyositis and provides important reference information for the targeted therapy of dermatomyositis.
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8
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Lim D, Landon-Cardinal O, Ellezam B, Belisle A, Genois A, Sirois J, Bourré-Tessier J. Statin-associated anti-HMGCR immune-mediated necrotizing myopathy with dermatomyositis-like features: A case report. SAGE Open Med Case Rep 2020; 8:2050313X20984120. [PMID: 33447390 PMCID: PMC7780312 DOI: 10.1177/2050313x20984120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) immune-mediated necrotizing myopathy is a subtype of idiopathic inflammatory myopathy which may be associated with statin exposure. It presents with severe proximal muscle weakness, high creatine kinase levels and muscle fiber necrosis. Treatment with intravenous immunoglobulins and immunosuppressants is often necessary. This entity is not commonly known among dermatologists as there are usually no extramuscular manifestations. We report a rare case of statin-associated anti-HMGCR immune-mediated necrotizing myopathy with dermatomyositis-like cutaneous features. The possibility of anti-HMGCR immune-mediated necrotizing myopathy should be considered in patients with cutaneous dermatomyositis-like features associated with severe proximal muscle weakness, highly elevated creatine kinase levels and possible statin exposure. This indicates the importance of muscle biopsy and specific autoantibody testing for accurate diagnosis, as well as significant therapeutic implications.
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Affiliation(s)
- Darosa Lim
- Division of Dermatology, Department of Medicine, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Océane Landon-Cardinal
- Division of Rheumatology, Department of Medicine, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Benjamin Ellezam
- Department of Pathology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Annie Belisle
- Department of Pathology, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Annie Genois
- Division of Dermatology, Hôpital Pierre-Le Gardeur, Terrebonne, QC, Canada
| | - Jennifer Sirois
- Department of Anatomopathology, Hôpital Pierre-Le Gardeur, Terrebonne, QC, Canada
| | - Josiane Bourré-Tessier
- Division of Rheumatology, Department of Medicine, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
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9
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Zeidi M, Chen KL, Patel B, Ravishankar A, Lim R, Werth VP. Increased MxA protein expression and dendritic cells in spongiotic dermatitis differentiates dermatomyositis from eczema in a single-center case-control study. J Cutan Pathol 2020; 48:364-373. [PMID: 32954523 DOI: 10.1111/cup.13880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/11/2020] [Accepted: 09/02/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND Dermatomyositis (DM) is conventionally characterized by interface dermatitis (ID) on skin histopathology. A subset of DM patients has skin biopsies showing spongiotic dermatitis (SD), a histopathology more commonly seen in eczema. In this study, we aimed to (a) identify the percentage of clinically diagnosed DM patients with SD skin biopsies, (b) identify cytokine and cell markers that can help determine if a SD skin biopsy is consistent with DM. METHODS In this case-control study, biopsy specimens from ten DM patients with SD (DM-SD) were compared to specimens from ten healthy controls, ten patients with eczema, and 12 patients with DM with ID (DM-ID). Specimens were stained by immunohistochemistry for MxA, IFN-β, CD11c, and BDCA2. One-way ANOVA with Bonferroni's multiple comparison test was used to compare protein expression between groups. RESULTS Eleven of 164 (6.7%) patients with a clinical diagnosis of DM at our tertiary care center were identified as having SD. MxA, IFN-β, CD11c, and BDCA2 protein expression was significantly higher in DM-SD compared to eczema and healthy controls. Expressions of MxA, IFN-β, and BDCA2 were not significantly different between DM-SD and DM-ID. CONCLUSION Increased MxA, IFN-β, CD11c, and BDCA2 protein expression may aid in distinguishing between DM-SD and eczema and warrants further investigation.
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Affiliation(s)
- Majid Zeidi
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
| | - Kristen L Chen
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
| | - Basil Patel
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
| | - Adarsh Ravishankar
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
| | - Rachel Lim
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
| | - Victoria P Werth
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
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10
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Quantitative Assessment of Eosinophils in Dermatomyositis Skin Biopsies With Correlation of Eosinophils to Pruritus and Other Clinical Features. Am J Dermatopathol 2020; 43:287-290. [PMID: 32852288 DOI: 10.1097/dad.0000000000001765] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT The objective of this retrospective study was to analyze dermatomyositis skin biopsies for the presence of eosinophils and correlate this finding with other histopathologic and clinical characteristics. Cases of dermatomyositis evaluated in a single dermatologist's adult autoimmunity practice over a 2.5-year period were identified via ICD-10 diagnosis code. Dermatopathology archives were then searched for any corresponding biopsies consistent with dermatomyositis, and those identified were assessed for eosinophils, adnexal involvement, epidermal atrophy, dermal mucin, and basement membrane thickening. Histopathologic findings were correlated with key clinical features, including itch. A total of 39 biopsies from 17 patients were included. Eosinophils were noted in 44% of biopsies (n = 17) from 12 patients. Dermal mucin deposition and adnexal interface dermatitis were noted in 72% (n = 28) and 44% (n = 17) of biopsy specimens, respectively. Of 12 patients with eosinophils present in at least 1 biopsy specimen, 11 (92%) patients had a clinical history of pruritus of their skin lesions (P = 0.052). Limitations of this study include retrospective design and small number of patients.
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11
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Tsoi LC, Gharaee-Kermani M, Berthier CC, Nault T, Hile GA, Estadt SN, Patrick MT, Wasikowski R, Billi AC, Lowe L, Reed TJ, Gudjonsson JE, Kahlenberg JM. IL18-containing 5-gene signature distinguishes histologically identical dermatomyositis and lupus erythematosus skin lesions. JCI Insight 2020; 5:139558. [PMID: 32644977 PMCID: PMC7455118 DOI: 10.1172/jci.insight.139558] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/02/2020] [Indexed: 12/26/2022] Open
Abstract
Skin lesions in dermatomyositis (DM) are common, are frequently refractory, and have prognostic significance. Histologically, DM lesions appear similar to cutaneous lupus erythematosus (CLE) lesions and frequently cannot be differentiated. We thus compared the transcriptional profile of DM biopsies with CLE lesions to identify unique features. Type I IFN signaling, including IFN-κ upregulation, was a common pathway in both DM and CLE; however, CLE also exhibited other inflammatory pathways. Notably, DM lesions could be distinguished from CLE by a 5-gene biomarker panel that included IL18 upregulation. Using single-cell RNA-sequencing, we further identified keratinocytes as the main source of increased IL-18 in DM skin. This study identifies a potentially novel molecular signature, with significant clinical implications for differentiating DM from CLE lesions, and highlights the potential role for IL-18 in the pathophysiology of DM skin disease. IL-18 distinguishes dermatomyositis skin inflammation from cutaneous lupus erythematosus lesions.
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Affiliation(s)
- Lam C Tsoi
- Department of Dermatology and.,Department of Computational Medicine & Bioinformatics, University of Michigan Medical School, Ann Arbor, Michigan, USA.,Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, Michigan, USA
| | | | | | - Tori Nault
- Division of General Medicine, Department of Internal Medicine
| | | | - Shannon N Estadt
- Division of Rheumatology, Department of Internal Medicine.,Program in Immunology, and
| | | | | | | | - Lori Lowe
- Department of Dermatology and.,Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Tamra J Reed
- Division of Rheumatology, Department of Internal Medicine
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