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Bioinformatic analysis of key biomarkers and immune filtration of skin biopsy in discoid lupus erythematosus. Xiang Mengmeng,Chen Qian,Feng Yang,Wang Yilun,Wang Jie,Liang Jun,Xu Jinhua Lupus OBJECTIVE:Discoid lupus erythematosus (DLE) is the most common category of chronic cutaneous lupus erythematosus, where the pathological process is proved to be closely associated with immunity. This bioinformatic analysis sought to identify key biomarkers and to perform immune infiltration analysis in the skin biopsy samples of DLE. METHODS:GSE120809, GSE100093, GSE72535, GSE81071 were used as the data source of gene expression profiles, altogether containing 79 DLE samples and 47 normal controls (NC). Limma package was applied to identify differentially expressed genes (DEGs) and additional Gene Ontology (GO) together with The Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were done. Protein-protein interaction network (PPI) was constructed using STRING and Cytoscape. Hub genes were selected by CytoHubba. Finally, immune filtration analysis was finished by the CIBERSORT algorithm, and comparisons between the two groups were accomplished. RESULTS:A total of 391 DEGs were identified, which were composed of 57 up-regulated genes and 334 down-regulated genes. GO and KEGG enrichment analyses revealed that DEGs were closely related with different steps in the immune response. Top 10 hub genes included GBP2, HLA-F, IFIT2, RSAD2, ISG15, IFIT1, IFIT3, MX1, XAF1 and IFI6. Immune filtration analysis from CIBERSORT had found that compared with NC, DLE samples had higher percentages of CD8+ T cells, T cells CD4 memory activated, T cells gamma delta, macrophages M1 and lower percentages of T cells regulatory, macrophages M2, dendritic cells resting, mast cells resting, mast cells activated. CONCLUSION:This bioinformatic study selected key biomarkers from the contrast between DLE and NC skin samples and is the first research to analyze immune cell filtration in DLE. 10.1177/0961203321992434
Current Insights into Immunology and Novel Therapeutics of Atopic Dermatitis. Kader Hidaya A,Azeem Muhammad,Jwayed Suhib A,Al-Shehhi Aaesha,Tabassum Attia,Ayoub Mohammed Akli,Hetta Helal F,Waheed Yasir,Iratni Rabah,Al-Dhaheri Ahmed,Muhammad Khalid Cells Atopic dermatitis (AD) is one of the most prevalent inflammatory disease among non-fatal skin diseases, affecting up to one fifth of the population in developed countries. AD is characterized by recurrent pruritic and localized eczema with seasonal fluctuations. AD initializes the phenomenon of atopic march, during which infant AD patients are predisposed to progressive secondary allergies such as allergic rhinitis, asthma, and food allergies. The pathophysiology of AD is complex; onset of the disease is caused by several factors, including strong genetic predisposition, disrupted epidermal barrier, and immune dysregulation. AD was initially characterized by defects in the innate immune system and a vigorous skewed adaptive Th2 response to environmental agents; there are compelling evidences that the disorder involves multiple immune pathways. Symptomatic palliative treatment is the only strategy to manage the disease and restore skin integrity. Researchers are trying to more precisely define the contribution of different AD genotypes and elucidate the role of various immune axes. In this review, we have summarized the current knowledge about the roles of innate and adaptive immune responsive cells in AD. In addition, current and novel treatment strategies for the management of AD are comprehensively described, including some ongoing clinical trials and promising therapeutic agents. This information will provide an asset towards identifying personalized targets for better therapeutic outcomes. 10.3390/cells10061392
Bidirectional association between atopic dermatitis, conjunctivitis, and other ocular surface diseases: A systematic review and meta-analysis. Ravn Nina H,Ahmadzay Zohra F,Christensen Tine A,Larsen Henrik H P,Loft Nikolai,Rævdal Pernille,Heegaard Steffen,Kolko Miriam,Egeberg Alexander,Silverberg Jonathan I,Halling Anne-Sofie,Thyssen Jacob P Journal of the American Academy of Dermatology BACKGROUND:Conjunctivitis and several other ocular surface diseases (OSDs) have been linked to atopic dermatitis (AD) and its treatment. OBJECTIVES:To examine the association between AD, conjunctivitis, and other OSDs. METHODS:A systematic review and meta-analysis was performed. Two authors independently searched EMBASE, PubMed, SCOPUS, and Web of Science and performed title/abstract and full-text review and data abstraction. Pooled random-effects prevalence and odds ratios (ORs) with 95% confidence intervals (CIs) were estimated. RESULTS:The search yielded 5719 nonduplicate articles; 134 were included in the quantitative analysis. AD was associated with conjunctivitis compared to reference individuals (OR, 2.78; 95% CI, 2.33-3.32); the prevalences of conjunctivitis in patients with AD and reference individuals were 31.7% (95% CI, 27.7-35.9) and 13.3% (95% CI, 11.0-15.7), respectively. Keratoconus (OR, 3.71; 95% CI, 1.99-6.94) and ocular herpes simplex (OR, 3.65; 95% CI 2.04-6.51) were also associated with AD. LIMITATIONS:Disease definitions differed and often relied on self-reports. Few studies provided data concerning AD phenotype or OSDs other than conjunctivitis. CONCLUSIONS:Conjunctivitis is the most common ocular comorbidity in AD. Signs and symptoms of conjunctivitis and other OSDs in AD may be underreported, making proactive inquiry and examination by physicians treating patients with AD important. 10.1016/j.jaad.2020.11.037
Mapping ethical and social aspects of biomarker research and its application in atopic dermatitis and psoriasis: a systematic review of reason. Journal of the European Academy of Dermatology and Venereology : JEADV Biomarker research is associated with high hopes for atopic dermatitis and psoriasis research. Although various effective treatments have been developed, many challenges remain concerning diagnostics and the development of targeted treatments, but also regarding a number of ethical and social issues. In this paper, building on a systematic literature review and review of reason, we examine the ethical and social debate on biomarker research for atopic dermatitis and psoriasis. We discuss topics such as risks and benefits of stratification of patient groups, ethical aspects of big data and advanced analytics for biomarker use in atopic dermatitis and psoriasis. Our systematic literature review of reason, based on established methodological standards, includes argument-based ethics publications and scientific literature with implicitly ethically relevant aspects. The first search of biomarker research in dermatology and adjacent fields (e.g., oncology) resulted in a large amount of literature concerning general normative aspects of biomarker research, but suggested a lack of explicit argument-based ethical literature in atopic dermatitis and psoriasis research. We, therefore, conducted a second systematic search, focusing specifically on atopic dermatitis and psoriasis biomarker research. The 43 relevant articles identified through both systematic searches were clustered into three topic groups: (i) ethical aspects of stratification and precision medicine, (ii) digital ethics and (iii) research ethics with a focus on complexity and validation. We found that compared to other fields, such as cancer research, the ethical aspects of atopic dermatitis and psoriasis are rarely explained and addressed in detail. In particular, more work is required on scientific standards, digital ethics and responsible clinical application of biomarkers for atopic dermatitis and psoriasis, patient participation and ethical implications of biomarker use for children or young people with atopic dermatitis and psoriasis. We close with suggestions on how to address the ethical and social dimension of atopic dermatitis and psoriasis research and practice more directly in future. 10.1111/jdv.18128