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  1. Article ; Online: Preface to Journal of Dermatology special issue: Neutrophilic dermatoses and autoinflammation.

    Yamamoto, Toshiyuki

    The Journal of dermatology

    2024  Volume 51, Issue 2, Page(s) 149

    MeSH term(s) Humans ; Dermatology ; Dermatitis ; Sweet Syndrome
    Language English
    Publishing date 2024-01-09
    Publishing country England
    Document type Letter
    ZDB-ID 800103-0
    ISSN 1346-8138 ; 0385-2407
    ISSN (online) 1346-8138
    ISSN 0385-2407
    DOI 10.1111/1346-8138.17104
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Tissue resident memory T-cells in lichen planus on a surgical scar.

    Yamamoto, Toshiyuki

    Clinical and experimental dermatology

    2024  

    Language English
    Publishing date 2024-04-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 195504-4
    ISSN 1365-2230 ; 0307-6938
    ISSN (online) 1365-2230
    ISSN 0307-6938
    DOI 10.1093/ced/llae125
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Recurrence of psoriasis on the resolution sites left with lentiginous pigmented patches after TNF inhibitor therapy.

    Yamamoto, Toshiyuki

    Anais brasileiros de dermatologia

    2023  Volume 98, Issue 6, Page(s) 866–867

    Language English
    Publishing date 2023-06-23
    Publishing country Spain
    Document type Case Reports
    ZDB-ID 433655-0
    ISSN 1806-4841 ; 0365-0596
    ISSN (online) 1806-4841
    ISSN 0365-0596
    DOI 10.1016/j.abd.2022.04.015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Local neutrophil and eosinophil extracellular traps formation in pyodermatitis pyostomatitis vegetans.

    Yamamoto, Toshiyuki

    Experimental dermatology

    2023  Volume 33, Issue 1, Page(s) e14931

    Abstract: Pyodermatitis pyostomatitis vegetans is a rare inflammatory condition, affecting the skin and/or mucous membrane. Some cases include both skin and mucous involvement, whereas others develop either skin or mucous lesions only. The typically affected areas ...

    Abstract Pyodermatitis pyostomatitis vegetans is a rare inflammatory condition, affecting the skin and/or mucous membrane. Some cases include both skin and mucous involvement, whereas others develop either skin or mucous lesions only. The typically affected areas are the scalp, face, trunk and extremities, including the flexural areas and umbilicus. Clinical features show erosive granulomatous plaques, keratotic plaques with overlying crusts and pustular lesions. Among mucous lesions, oral mucosa is most frequently involved, and gingival erythema, shallow erosions, cobblestone-like papules on the buccal mucosa or upper hard palate of the oral cavity are also observed. Some of the lesions assume a 'snail track' appearance. Although there are several similarities between pyodermatitis pyostomatitis vegetans and other diseases, that is pyoderma gangrenosum, pemphigus vegetans and pemphigoid vegetans, the histopathological features of pyodermatitis pyostomatitis vegetans are unique in that epidermal hyperplasia, focal acantholysis and dense inflammatory infiltrates with intraepidermal and subepidermal eosinophilic microabscesses are observed. Direct immunofluorescence findings are principally negative. Activated neutrophils are supposed to play an important role in the pathogenesis of pyodermatitis pyostomatitis vegetans. The expression of IL-36 and neutrophil extracellular traps (NETs) was observed in the lesional skin, and additionally, eosinophil extracellular traps (EETs) was detected in pyodermatitis pyostomatitis vegetans. A possible pathogenic role of NETs and EETs in the innate immunity and autoinflammatory aspects of pyodermatitis pyostomatitis vegetans was discussed.
    MeSH term(s) Humans ; Pemphigus ; Pyoderma/complications ; Pyoderma/pathology ; Stomatitis/etiology ; Stomatitis/pathology ; Extracellular Traps ; Neutrophils/pathology ; Erythema ; Organic Chemicals
    Chemical Substances vegetan (105478-66-8) ; Organic Chemicals
    Language English
    Publishing date 2023-09-11
    Publishing country Denmark
    Document type Journal Article ; Review
    ZDB-ID 1130936-2
    ISSN 1600-0625 ; 0906-6705
    ISSN (online) 1600-0625
    ISSN 0906-6705
    DOI 10.1111/exd.14931
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Role of neutrophils in cutaneous lupus erythematosus.

    Yamamoto, Toshiyuki

    The Journal of dermatology

    2023  Volume 51, Issue 2, Page(s) 180–184

    Abstract: There are various types of cutaneous lupus erythematosus (CLE), either with or without the association of systemic lupus erythematosus (SLE). In some of the subtypes of cutaneous lupus, histopathology reveals neutrophil infiltration in the lesional skin; ...

    Abstract There are various types of cutaneous lupus erythematosus (CLE), either with or without the association of systemic lupus erythematosus (SLE). In some of the subtypes of cutaneous lupus, histopathology reveals neutrophil infiltration in the lesional skin; however, the significance of neutrophils in CLE is not yet fully elucidated. Recent studies have shown that neutrophil extracellular traps (NETs) formation by activated neutrophils is observed in several types of CLE, including lupus panniculitis, subacute lupus erythematosus, and acute lupus erythematosus, although the number of reports is small. Excessive NETosis, due to either increased NETs formation or defective clearance of NETs, may play a role in the induction of autoimmunity and autoantibody production in SLE, as well as endothelial damage, thrombus formation, and vascular damage in the lesional skin. CLE is an excessive interferon-driven autoimmune disease. Plasmacytoid dendritic cells are located in lupus erythematosus skin and contribute to the etiology of skin lesions as a main producing cell of type I interferon. Neutrophils, monocytes, and keratinocytes also produce type I interferon via several triggers. Neutrophils play an important role in the innate immune response in SLE. In this review, several types of CLE with neutrophil infiltration, as well as the role of neutrophils are discussed.
    MeSH term(s) Humans ; Neutrophils ; Lupus Erythematosus, Cutaneous ; Skin/pathology ; Lupus Erythematosus, Systemic ; Interferon Type I
    Chemical Substances Interferon Type I
    Language English
    Publishing date 2023-11-27
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 800103-0
    ISSN 1346-8138 ; 0385-2407
    ISSN (online) 1346-8138
    ISSN 0385-2407
    DOI 10.1111/1346-8138.17036
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Serum cytokine profiles in a case of post-cesarean pyoderma gangrenosum.

    Kikuchi, Nobuyuki / Yamamoto, Toshiyuki

    The Journal of dermatology

    2024  

    Language English
    Publishing date 2024-03-20
    Publishing country England
    Document type Letter
    ZDB-ID 800103-0
    ISSN 1346-8138 ; 0385-2407
    ISSN (online) 1346-8138
    ISSN 0385-2407
    DOI 10.1111/1346-8138.17152
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Sarcoid reaction in lymph node metastasis of genital Paget disease.

    Endo, Mai / Yamamoto, Toshiyuki

    The Journal of dermatology

    2024  

    Language English
    Publishing date 2024-04-17
    Publishing country England
    Document type Letter
    ZDB-ID 800103-0
    ISSN 1346-8138 ; 0385-2407
    ISSN (online) 1346-8138
    ISSN 0385-2407
    DOI 10.1111/1346-8138.17214
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Onset of multiple neurofibromas in chronic lymphoedema of the lower limb.

    Yamamoto, Toshiyuki

    The Australasian journal of dermatology

    2022  Volume 63, Issue 3, Page(s) 406–407

    MeSH term(s) Chronic Disease ; Humans ; Lower Extremity ; Lymphedema/complications ; Neurofibromatoses
    Language English
    Publishing date 2022-06-30
    Publishing country Australia
    Document type Letter
    ZDB-ID 138052-7
    ISSN 1440-0960 ; 0004-8380
    ISSN (online) 1440-0960
    ISSN 0004-8380
    DOI 10.1111/ajd.13891
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Erythema nodosum of the extremities following dupilumab treatment in a patient with atopic dermatitis.

    Hanami, Yuka / Yamamoto, Toshiyuki

    The Journal of dermatology

    2024  

    Language English
    Publishing date 2024-04-08
    Publishing country England
    Document type Letter
    ZDB-ID 800103-0
    ISSN 1346-8138 ; 0385-2407
    ISSN (online) 1346-8138
    ISSN 0385-2407
    DOI 10.1111/1346-8138.17199
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Palmar dermatofibroma in a patient with multiple porokeratosis.

    Yamamoto, Toshiyuki

    Anais brasileiros de dermatologia

    2022  Volume 97, Issue 6, Page(s) 792–794

    Abstract: Although dermatofibromas are not uncommon benign dermal nodules, palms are rarely involved. Herein, a rare case of palmar dermatofibroma was described, which occurred in a patient with porokeratosis. ...

    Abstract Although dermatofibromas are not uncommon benign dermal nodules, palms are rarely involved. Herein, a rare case of palmar dermatofibroma was described, which occurred in a patient with porokeratosis.
    MeSH term(s) Histiocytoma, Benign Fibrous ; Humans ; Porokeratosis ; Skin Neoplasms
    Language English
    Publishing date 2022-09-13
    Publishing country Spain
    Document type Case Reports
    ZDB-ID 433655-0
    ISSN 1806-4841 ; 0365-0596
    ISSN (online) 1806-4841
    ISSN 0365-0596
    DOI 10.1016/j.abd.2021.07.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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