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Matsuo M, Tawada C, Tanaka K, Ichiki N, Niwa H, Mizutani Y, Shu E, Iwata H. Oxidative stress and dermatomyositis: Report of d-ROM measurements in 13 cases. Int J Rheum Dis 2024; 27:e14931. [PMID: 37767747 DOI: 10.1111/1756-185x.14931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 08/25/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023]
Affiliation(s)
- Maho Matsuo
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chisato Tawada
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kayoko Tanaka
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Naohisa Ichiki
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hirofumi Niwa
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yoko Mizutani
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroaki Iwata
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Tozaki N, Tawada C, Niwa H, Mizutani Y, Shu E, Kawase A, Miwa Y, Ohnishi H, Sasai H, Miyako K, Hosokawa J, Kato A, Kobayashi K, Miyazaki T, Shirakami Y, Shimizu M, Iwata H. A case of VEXAS syndrome (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) with decreased oxidative stress levels after oral prednisone and tocilizumab treatment. Front Med (Lausanne) 2022; 9:1046820. [PMID: 36544501 PMCID: PMC9760706 DOI: 10.3389/fmed.2022.1046820] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 09/17/2022] [Accepted: 11/21/2022] [Indexed: 12/08/2022] Open
Abstract
VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) syndrome has recently been described as an autoinflammatory disease associated with severe adult-onset inflammatory manifestations. The various clinical manifestations include recurrent high-grade fever, neutrophilic dermatoses, cutaneous vasculitis, chondritis of the ear and nose, pulmonary infiltrates, cytopenia, uveitis, gastrointestinal pain or inflammation, aortitis, hepatosplenomegaly, and hematological disorders. VEXAS syndrome is caused by somatic mutations of the ubiquitin-like modifier activating enzyme 1 (UBA1) gene in myeloid-lineage cells. It is characterized by vacuolated myeloid and erythroid progenitor cells seen by bone marrow biopsy. We report the case of a 64-year-old Japanese man with VEXAS syndrome. At age 63, he was referred to us with a recurrent erythema on the hands associated with a general fever of 38-40°C that had persisted for 4 or 5 days and had recurred about once a month for a year. The skin rash appeared 2 or 3 days after the onset of each fever episode. Computed tomography (CT) of the chest revealed bilateral hilar lymphadenopathy (BHL), and the mediastinal lymph nodes were swollen. Sarcoidosis was suspected but was ruled out by several tests. Laboratory examinations showed elevated inflammatory markers. Bone marrow examination showed the vacuolization of myeloid precursor cells. A skin biopsy revealed dense dermal, predominantly perivascular, infiltrates. These consisted of mature neutrophils admixed with myeloperoxidase-positive CD163-positive myeloid cells, lymphoid cells and eosinophils. Sequencing analysis identified the somatic UBA1 variant c.122T > C, which results in p.Met41Thr. Treatment with oral prednisone (15 mg/day) and monthly intravenous tocilizumab injections (400 mg) completely resolved the symptoms. Neutrophils are a major source of reactive oxygen species, and the present case demonstrated numerous neutrophilic infiltrates. We hypothesize that the patient might have had elevated derivatives of reactive oxygen metabolites (d-ROMs). d-ROM quantification is a simple method for detecting hydroperoxide levels, and clinical trials have proven it useful for evaluating oxidative stress. In this study, we measured serum d-ROM before and after oral prednisone and tocilizumab treatment. The levels decreased significantly during treatment.
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Affiliation(s)
- Nagie Tozaki
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chisato Tawada
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan,*Correspondence: Chisato Tawada,
| | - Hirofumi Niwa
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yoko Mizutani
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Aki Kawase
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuki Miwa
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hidenori Ohnishi
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hideo Sasai
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan,Department of Applied Genomics, Kazusa DNA Research Institute, Chiba, Japan
| | - Keisuke Miyako
- Department of Applied Genomics, Kazusa DNA Research Institute, Chiba, Japan
| | - Junichi Hosokawa
- Department of Applied Genomics, Kazusa DNA Research Institute, Chiba, Japan
| | - Ayaka Kato
- Department of General Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kazuhiro Kobayashi
- Department of Pathology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tatsuhiko Miyazaki
- Department of General Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yohei Shirakami
- Department of Gastroenterology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masahito Shimizu
- Department of Gastroenterology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroaki Iwata
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Kanno Y, Shu E. α2-Antiplasmin as a Potential Therapeutic Target for Systemic Sclerosis. Life (Basel) 2022; 12:life12030396. [PMID: 35330147 PMCID: PMC8953682 DOI: 10.3390/life12030396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 11/24/2022] Open
Abstract
Systemic sclerosis is a connective tissue disease of unknown origin that is characterized by immune system abnormalities, vascular damage, and extensive fibrosis of the skin and visceral organs. α2-antiplasmin is known to be the main plasmin inhibitor and has various functions such as cell differentiation and cytokine production, as well as the regulation of the maintenance of the immune system, endothelial homeostasis, and extracellular matrix metabolism. The expression of α2-antiplasmin is elevated in dermal fibroblasts from systemic sclerosis patients, and the blockade of α2-antiplasmin suppresses fibrosis progression and vascular dysfunction in systemic sclerosis model mice. α2-antiplasmin may have promise as a potential therapeutic target for systemic sclerosis. This review considers the role of α2-antiplasmin in the progression of systemic sclerosis.
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Affiliation(s)
- Yosuke Kanno
- Department of Clinical Pathological Biochemistry, Faculty of Pharmaceutical Science, Doshisha Women’s College of Liberal Arts, 97-1 Kodo Kyotanabe, Kyoto 610-0395, Japan
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1194, Japan;
- Correspondence: ; Tel.:+81-0774-65-8629
| | - En Shu
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1194, Japan;
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Kanno Y, Shu E, Niwa H, Seishima M, Ozaki KI. MicroRNA-30c attenuates fibrosis progression and vascular dysfunction in systemic sclerosis model mice. Mol Biol Rep 2021; 48:3431-3437. [PMID: 33913094 DOI: 10.1007/s11033-021-06368-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/21/2021] [Indexed: 10/21/2022]
Abstract
Systemic sclerosis (SSc) is characterized by peripheral circulatory disturbance and fibrosis in skin and visceral organs. We recently demonstrated that α2-antiplasmin (α2AP) is elevated in SSc dermal fibroblasts and SSc model mice, and is associated with fibrosis progression and vascular dysfunction. In the present study, we predicted that α2AP could be a target of microRNA-30c (miR-30c) using TargetScan online database, and investigated the effect of miR-30c on the pathogenesis of SSc using a bleomycin-induced SSc model mice. miR-30c attenuated α2AP expression, and prevented the pro-fibrotic changes (increased dermal thickness, collagen deposition, myofibroblast accmulation) and the vascular dysfunction (the reduction of vascular endothelial cells (ECs) and blood flow) in the skin of SSc model mice. Furthermore, miR-30c suppressed pulmonary fibrosis progression in the SSc model mice. miR-30c exerts the anti-fibrotic and anti-angiopathy effects on SSc model mice, and might provide a basis for clinical strategies for SSc.
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Affiliation(s)
- Yosuke Kanno
- Department of Molecular Pathology, Faculty of Pharmaceutical Science, Doshisha Women's College of Liberal Arts, 97-1 Kodo Kyo-tanabe, Kyoto, 610-0395, Japan. .,Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan.
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hirofumi Niwa
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Kei-Ichi Ozaki
- Department of Molecular Pathology, Faculty of Pharmaceutical Science, Doshisha Women's College of Liberal Arts, 97-1 Kodo Kyo-tanabe, Kyoto, 610-0395, Japan
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Fujii A, Mizutani YH, Kawamura M, Matusyama K, Mizutani Y, Shu E, Seishima M. Serum progranulin level is a novel tool for monitoring disease activity of dermatomyositis with antimelanoma differentiation‐associated protein 5 antibodies. J Cutan Immunol Allergy 2021. [DOI: 10.1002/cia2.12160] [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] [Indexed: 11/08/2022] Open
Affiliation(s)
- Asami Fujii
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Yuki H. Mizutani
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Miho Kawamura
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Kanako Matusyama
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Yoko Mizutani
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - En Shu
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Mariko Seishima
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
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Kawamura M, Mizutani Y, Mizutani Y, Matsuyama K, Shu E, Miyazaki T, Seishima M. Clinical and pathological differences between skin‐limited IgM/IgG vasculitis and skin‐limited IgA vasculitis. J Cutan Immunol Allergy 2021. [DOI: 10.1002/cia2.12156] [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] [Indexed: 11/08/2022] Open
Affiliation(s)
- Miho Kawamura
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Yuki Mizutani
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Yoko Mizutani
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - Kanako Matsuyama
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | - En Shu
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
| | | | - Mariko Seishima
- Department of Dermatology Gifu University Graduate School of Medicine Gifu Japan
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Niwa H, Kanno Y, Shu E, Seishima M. Decrease in matrix metalloproteinase‑3 activity in systemic sclerosis fibroblasts causes α2‑antiplasmin and extracellular matrix deposition, and contributes to fibrosis development. Mol Med Rep 2020; 22:3001-3007. [PMID: 32945390 DOI: 10.3892/mmr.2020.11358] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 07/01/2020] [Indexed: 11/05/2022] Open
Abstract
Systemic sclerosis (SSc) is a connective tissue disease of autoimmune origin characterized by fibrosis of the skin and visceral organs, and peripheral circulatory disturbance. α2‑antiplasmin (α2AP) is the major circulating inhibitor of plasmin and is a key regulator of fibrinolysis. It has been demonstrated that the expression of α2AP is elevated in dermal fibroblasts obtained from patients with SSc patients. It has also been determined that α2AP is associated with the development and progression of fibrosis in SSc. The present study assessed the relationship between α2AP and matrix metalloproteinase‑3 (MMP‑3), an extracellular matrix (ECM)‑degrading enzyme. Serum levels of α2AP and MMP‑3 were measured in healthy controls and patients with SSc using ELISA. No significant differences were determined between these two groups. α2AP, MMP‑3 and tissue inhibitor of metalloproteinase‑1 (TIMP‑1) expression was subsequently evaluated in normal and SSc fibroblasts via western blotting. The results revealed that α2AP expression increased in SSc dermal fibroblasts, while the ratio of MMP‑3/TIMP‑1 decreased. Additionally, incubation of recombinant α2AP with MMP‑3 caused α2AP degradation. The mixture of recombinant α2AP with MMP‑3 was subsequently added to normal fibroblasts prior to western blotting. The results revealed decreased α‑smooth muscle actin (α‑SMA; a marker of the myofibroblast phenotype) and type I collagen expression. The stimulation of SSc fibroblasts with MMP‑3 decreased protein levels of α2AP, α‑SMA and type I collagen, thus reversing the pro‑fibrotic phenotype of SSc fibroblasts. SSc fibroblast transfection with microRNA‑29a resulted in a decreased TIMP‑1 expression, but also decreased the protein expression of α2AP. The results indicated that MMP‑3 attenuated fibrosis progression by degrading α2AP and ECM, and might therefore contribute to a novel therapeutic approach for SSc treatment.
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Affiliation(s)
- Hirofumi Niwa
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu 501‑1194, Japan
| | - Yosuke Kanno
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu 501‑1194, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu 501‑1194, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu 501‑1194, Japan
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Ito M, Moriya C, Matsuyama K, Shu E, Hamaguchi Y, Seishima M. A Case of Dermatomyositis Coexisting with Both Anti-Mi-2 and Anti-NXP-2 Antibodies. Case Rep Dermatol 2020; 12:92-97. [PMID: 32508616 PMCID: PMC7250387 DOI: 10.1159/000507504] [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: 02/23/2020] [Accepted: 03/19/2020] [Indexed: 11/19/2022] Open
Abstract
Myositis-specific autoantibodies (MSAs) including anti-Mi-2 and anti-nuclear matrix protein 2 (NXP-2) antibodies have been detected in the patients with dermatomyositis (DM), and are useful tools for identifying clinical subsets of DM. MSAs are exclusively found in DM patients. Anti-Mi-2 antibody-positive DM patients show the typical skin lesions and myositis and are rarely associated with internal malignancy and interstitial lung disease (ILD). On the other hand, adult DM patients with anti-NXP-2 antibody often show calcinosis and internal malignancy, but rarely ILD. In addition, anti-NXP-2 antibody-positive DM patients have severe phenotype with myalgia, peripheral edema, and significant dysphagia, but with mild skin lesions. Herein, we report a rare case of classic DM coexisting with both anti-Mi-2 and anti-NXP-2 antibodies, clinically, without ILD or internal malignancy. Our patient had typical skin manifestations, muscle weakness, muscle pain, and general fatigue without calcinosis, peripheral edema, or dysphagia. Thus, the clinical phenotype was similar to anti-Mi-2 antibody-positive DM.
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Affiliation(s)
- Mitsuru Ito
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chie Moriya
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kanako Matsuyama
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yasuhito Hamaguchi
- Department of Molecular Pathology of Skin, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Mizutani Y, Mizutani YH, Matsuyama K, Kawamura M, Fujii A, Shu E, Ohnishi H, Seishima M. Generalized pustular psoriasis in pregnancy, successfully treated with certolizumab pegol. J Dermatol 2020; 47:e262-e263. [PMID: 32363682 DOI: 10.1111/1346-8138.15355] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoko Mizutani
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuki H Mizutani
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kanako Matsuyama
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Miho Kawamura
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Asami Fujii
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hidenori Ohnishi
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Kanno Y, Shu E, Niwa H, Kanoh H, Seishima M. Alternatively activated macrophages are associated with the α2AP production that occurs with the development of dermal fibrosis : The role of alternatively activated macrophages on the development of fibrosis. Arthritis Res Ther 2020; 22:76. [PMID: 32272967 PMCID: PMC7146905 DOI: 10.1186/s13075-020-02159-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 09/30/2019] [Accepted: 03/23/2020] [Indexed: 12/25/2022] Open
Abstract
Background Fibrotic diseases are characterized by tissue overgrowth, hardening, and/or scarring because of the excessive production, deposition, and contraction of the extracellular matrix (ECM). However, the detailed mechanisms underlying these disorders remain unclear. It was recently reported that α2-antiplasmin (α2AP) is elevated in fibrotic tissue and that it is associated with the development of fibrosis. In the present study, we examined the mechanism underlying the production of α2AP on the development of fibrosis. Methods To clarify the mechanism underlying the production of α2AP on the development of fibrosis, we focused on high-mobility group box 1 (HMGB1), which is associated with the development of fibrosis. The mouse model of bleomycin-induced fibrosis was used to evaluate the production of α2AP on the development of fibrosis. Results We found that HMGB1 induced the production of α2AP through receptor for advanced glycation end products (RAGE) in fibroblasts. Next, we showed that macrophage reduction by a macrophage-depleting agent, clodronate, attenuated the progression of fibrosis and the production of α2AP and HMGB1 in the bleomycin-induced mice. We also showed that IL-4-stimulated alternatively activated macrophages induced the production of HMGB1, that IL-4-stimulated alternatively activated macrophage conditioned media (CM) induced pro-fibrotic changes and α2AP production, and that the inhibition of HMGB1 and RAGE attenuated these effects in fibroblasts. Furthermore, the blockade of IL-4 signaling by IL-4Rα neutralizing antibodies attenuated the progression of fibrosis and the production of α2AP and HMGB1 in the bleomycin-induced mice. Conclusion These findings suggest that alternatively activated macrophage-derived HMGB1 induced the production of α2AP through RAGE and that these effects are associated with the development of fibrosis. Our findings may provide a clinical strategy for managing fibrotic disorders.
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Affiliation(s)
- Yosuke Kanno
- Department of Clinical Pathological Biochemistry, Faculty of Pharmaceutical Science, Doshisha Women's College of Liberal Arts, 97-1 Kodo Kyo-tanabe, Kyoto, 610-0395, Japan. .,Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan.
| | - En Shu
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hirofumi Niwa
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Mariko Seishima
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
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11
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Akagawa M, Hattori Y, Mizutani Y, Shu E, Miyazaki T, Seishima M. Palisaded Neutrophilic and Granulomatous Dermatitis in a Patient with Granulomatosis with Polyangiitis. Case Rep Dermatol 2020; 12:52-56. [PMID: 32308576 PMCID: PMC7154257 DOI: 10.1159/000506670] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 01/29/2020] [Accepted: 02/19/2020] [Indexed: 11/19/2022] Open
Abstract
Palisaded neutrophilic and granulomatous dermatitis (PNGD) shows various clinical features and is histologically characterized by palisaded granulomas surrounding degenerated collagen. PNGD is known to be associated with a variety of systemic conditions such as rheumatoid arthritis and systemic lupus erythematosus. Furthermore, PNGD has been reported to be associated with antineutrophilic cytoplasmic antibody-associated vasculitis, including granulomatosis with polyangiitis (GPA) and microscopic polyangiitis. Here, we report a case of PNGD associated with GPA, which showed the infiltration of CD163-positive M2 macrophages in the skin lesion with elevated serum level of soluble CD163 (sCD163). The serum sCD163 level was reduced to normal range after systemic steroid therapy. Thus, M2 macrophages may play a role in the pathomechanisms of PNGD associated with GPA.
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Affiliation(s)
- Mai Akagawa
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuki Hattori
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yoko Mizutani
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Hattori Y, Matsuyama K, Shu E, Seishima M. Eosinophilic pneumonia and esophagitis in a patient with malignant melanoma treated with nivolumab. J Dermatol 2019; 46:e454-e455. [PMID: 31353501 DOI: 10.1111/1346-8138.15030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuki Hattori
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kanako Matsuyama
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Niwa H, Kawamura M, Moriya C, Matsuyama K, Shu E, Kanoh H, Iida K, Niwa A, Seishima M. Cutaneous infection by Staphylococcus lugdunensis at the site where dermal filler was injected 17 years ago. J Dermatol 2019; 46:e290-e292. [PMID: 30868614 DOI: 10.1111/1346-8138.14844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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)
- Hirofumi Niwa
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Miho Kawamura
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chie Moriya
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kanako Matsuyama
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kazuki Iida
- Department of Oral and Maxillofacial Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Ayumi Niwa
- Division of Clinical Laboratory, Gifu University Hospital, Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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14
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Shu E, Sobieszczyk ME, Sal Y Rosas VG, Segura P, Galea JT, Lecca L, Sanchez J, Lama JR. Knowledge of tuberculosis and vaccine trial preparedness in Lima, Peru. Int J Tuberc Lung Dis 2019; 21:1288-1293. [PMID: 29297450 DOI: 10.5588/ijtld.17.0116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING A safe, effective vaccine would improve tuberculosis (TB) control worldwide. Extensive community engagement will be essential to ensure the interest and participation of populations at highest risk. OBJECTIVE/METHOD To inform the potential implementation of efficacy studies, we assessed TB knowledge, attitudes towards licensed vaccines and willingness to participate in future TB vaccine efficacy trials among 262 household contacts of 79 recently diagnosed pulmonary TB cases in Lima, Peru. RESULTS Overall knowledge of TB was low. Only 41.6% of household contacts perceived themselves as being at high risk of acquiring TB. Slightly above half (54.2%) indicated willingness to participate in a TB vaccine trial. After clustered analysis adjusting for homogeneity among families, willingness to enroll was associated with belief that receiving all recommended vaccinations is important (adjusted OR [aOR] 3.28, P = 0.016), desire to know more about TB risk factors and clinical trials (aOR 2.60, P = 0.004), older age (aOR 1.02, P = 0.027) and TB knowledge (aOR 0.05, P = 0.039). CONCLUSION Barriers to participation in TB vaccine trials exist among individuals at high risk for TB. Targeted education about TB risk factors, TB transmission and education about the clinical trial process will be critical for laying the groundwork for future vaccine trials.
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Affiliation(s)
- E Shu
- College of Physicians & Surgeons, Columbia University, New York, New York, USA
| | - M E Sobieszczyk
- College of Physicians & Surgeons, Columbia University, New York, New York, USA
| | | | - P Segura
- Asociacion Civil Impacta Salud y Educacion, Lima, Peru
| | - J T Galea
- Partners In Health, Boston, Massachusetts, Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - L Lecca
- Socios En Salud, Sucursal Peru, Lima, Peru
| | - J Sanchez
- Asociacion Civil Impacta Salud y Educacion, Lima, Peru, Department of Global Health, University of Washington, Seattle, WA, USA
| | - J R Lama
- Asociacion Civil Impacta Salud y Educacion, Lima, Peru, Department of Global Health, University of Washington, Seattle, WA, USA
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15
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Farshidpour L, Ives TC, Shu E, Darracq M, Young M. 179 Point-of-Care Synovial Lactate to Distinguish Between Septic and Aseptic Arthritis. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.184] [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: 11/26/2022]
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16
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Matsuyama K, Tokuzumi M, Takahashi T, Shu E, Takagi H, Hashimoto T, Seishima M. Elevated serum eosinophil cationic protein and transforming growth factor-α levels in a patient with pemphigus vegetans. Clin Exp Dermatol 2018; 43:917-920. [DOI: 10.1111/ced.13670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2017] [Indexed: 12/31/2022]
Affiliation(s)
- K. Matsuyama
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - M. Tokuzumi
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - T. Takahashi
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - E. Shu
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - H. Takagi
- Department of Dermatology; Ogaki Municipal Hospital; Ogaki Japan
| | - T. Hashimoto
- Kurume University Institute of Cutaneous Cell Biology; Fukuoka Japan
| | - M. Seishima
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
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17
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Hattori Y, Matsuyama K, Takahashi T, Shu E, Kanoh H, Seishima M. Anti-MDA5 Antibody-Positive Dermatomyositis Presenting with Cellulitis-Like Erythema on the Mandible as an Initial Symptom. Case Rep Dermatol 2018; 10:110-114. [PMID: 29867431 PMCID: PMC5981633 DOI: 10.1159/000488077] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 01/09/2018] [Accepted: 03/02/2018] [Indexed: 11/29/2022] Open
Abstract
Panniculitis is an uncommon skin eruption observed in patients with dermatomyositis (DM)/clinically amyopathic dermatomyositis (CADM), especially in anti-melanoma differentiation-associated gene 5 (MDA5) antibody-positive DM. We present here a 51-year-old Japanese woman with an anti-MDA5 antibody-positive DM who initially had cellulitis-like erythema on her right mandible. Histopathological findings showed a subcutaneous lobular infiltration of lymphocytes. The patient developed typical skin eruptions of DM/CADM, rapidly progressive interstitial lung disease, and severe muscle weakness 2 weeks after the first visit. After the diagnosis of anti-MDA5 antibody-positive DM, she was treated with intravenous steroid pulse therapy (methylprednisolone, 1,000 mg/day for 3 days), oral prednisolone at 1.0 mg/kg/day, and tacrolimus at 4.0 mg/day. The lesions of panniculitis associated with DM/CADM typically present on the buttocks, thighs, arms, and abdomen. This is the first DM/CADM case with localized panniculitis on the face. Panniculitis and myositis usually show simultaneous improvement during treatment. Although panniculitis disappeared with steroid and tacrolimus treatment and did not recur, muscle weakness was intractable and recurred in this case. This indicates that the clinical courses of panniculitis and myositis of DM/CADM do not always change in parallel.
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Affiliation(s)
- Yuki Hattori
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kanako Matsuyama
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tomoko Takahashi
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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18
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Abstract
Pemphigus is a blistering disease characterized by pemphigus autoantibodies (PVIgG) directed mostly against desmogleins (Dsgs), resulting in the loss of keratinocyte adhesion (acantholysis). Yet, the mechanisms underlying blister formation remain to be clarified. We have shown previously that anti-Fas ligand (FasL) antibody (Ab) prevents PVIgG-induced caspase-8 activation and Dsg cleavage in human keratinocytes, and that sera from pemphigus patients contain abnormally increased levels of FasL. Here, we demonstrate that recombinant FasL induces the activation of caspases prior to Dsg degradation, and anti-FasL Ab prevents acantholysis in cultured keratinocytes. Moreover, the silencing of FasL reduces PVIgG-induced caspase-8 activation and Dsg3 cleavage. Following injection of PVIgG into mice, FasL is upregulated at 1–3 h and is followed by caspase-8-mediated keratinocyte apoptosis, before blister formation. The administration of anti-FasL Ab after PVIgG injection blocks blister formation in mice. Furthermore, we injected PVIgG into two different gene-targeted mutant mice that selectively lack either secreted soluble FasL (sFasL), FasLΔs/Δs mice, or the membrane-bound form of FasL (mFasL), FasLΔm/Δm mice. After PVIgG treatment, blisters are only visible in FasLΔm/Δm animals, lacking mFasL, but still producing sFasL, similar to wild-type (C57BL/6) animals. By contrast, a significant decrease in the relative acantholytic area is observed in the FasLΔs/Δs animals. These results demonstrate that soluble FasL plays a crucial role in the mechanisms of blister formation, and blockade of FasL could be an effective therapeutic approach for pemphigus.
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Affiliation(s)
- Roberta Lotti
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - En Shu
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Tiziana Petrachi
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Alessandra Marconi
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Elisabetta Palazzo
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Marika Quadri
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Ann Lin
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Lorraine A O'Reilly
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia
| | - Carlo Pincelli
- Laboratory of Cutaneous Biology, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Kanno Y, Shu E, Kanoh H, Matsuda A, Seishima M. α2AP regulates vascular alteration by inhibiting VEGF signaling in systemic sclerosis. J Dermatol Sci 2017. [DOI: 10.1016/j.jdermsci.2017.02.033] [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: 10/19/2022]
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20
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Hattori Y, Matsuyama K, Shu E, Kanoh H, Seishima M. Symmetrical drug-related intertriginous and flexural exanthema possibly due to thiamine disulfide. J Dermatol 2017; 44:e115-e116. [DOI: 10.1111/1346-8138.13776] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuki Hattori
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Kanako Matsuyama
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - En Shu
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Hiroyuki Kanoh
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Mariko Seishima
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
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21
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Kanno Y, Shu E, Kanoh H, Matsuda A, Seishima M. α2AP regulates vascular alteration by inhibiting VEGF signaling in systemic sclerosis: the roles of α2AP in vascular dysfunction in systemic sclerosis. Arthritis Res Ther 2017; 19:22. [PMID: 28159016 PMCID: PMC5291960 DOI: 10.1186/s13075-017-1227-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 10/04/2016] [Accepted: 01/12/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Systemic sclerosis (SSc) is a connective tissues disease of unknown origin characterized by vascular damage and extensive fibrosis. Recently, we demonstrated that α2-antiplasmin (α2AP) is associated with the development of fibrosis in SSc. We herein investigate the roles of α2AP in vascular dysfunction in SSc. METHODS Vascular damage in mice was determined by the levels of blood vessels and blood flow. Vascular functions in vascular endothelial cells (ECs) were determined by the levels of tube formation, cell proliferation, and endothelial junction-associated protein (VE-cadherin and PECAM1) production. RESULTS The administration of α2AP induced vascular damage in mice. Conversely, the α2AP neutralization improved vascular damage in a bleomycin-induced mouse model of SSc. Additionally, we showed that the SSc fibroblast-conditioned media induced the reduction of tube formation, cell proliferation, and endothelial junction-associated protein production in ECs, and that α2AP neutralization improved them. We also examined the mechanisms underlying the effects of α2AP on vascular alteration in SSc and found that α2AP attenuated vascular endothelial growth factor-induced tube formation, cell proliferation, and endothelial junction-associated protein production through the adipose triglyceride lipase/tyrosine phosphatase SHP2 axis in ECs. CONCLUSION Our findings demonstrate that α2AP is associated with vascular alteration, and that the blocking of α2AP improves vascular dysfunction in SSc.
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Affiliation(s)
- Yosuke Kanno
- Department of Clinical Pathological Biochemistry, Faculty of Pharmaceutical Science, Doshisha Women's Collage of Liberal Arts, 97-1 Kodo, Kyo-tanabe, Kyoto, 610-0395, Japan.
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Ayaka Matsuda
- Department of Clinical Pathological Biochemistry, Faculty of Pharmaceutical Science, Doshisha Women's Collage of Liberal Arts, 97-1 Kodo, Kyo-tanabe, Kyoto, 610-0395, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
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22
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Matsuno H, Watanabe T, Tada S, Sekine A, Nohisa Y, Shinoda K, Furuta N, Ito H, Shu E, Seishima M. Sonographic Detection of Subcutaneous Foreign Bodies in 3 Cases. Acta Dermatovenerol Croat 2016; 24:299-302. [PMID: 28128083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Subcutaneous masses caused by foreign bodies are frequently encountered in daily practice. Although the majority of foreign bodies such as metals can be detected by radiography, substances such as vegetative materials or wood are difficult to detect. To our knowledge, only a few studies have described the sonographic characteristics of foreign bodies. Herein, we report 3 cases where we studied the sonographic characteristics of the foreign bodies in the dermis and subcutaneous tissue. Our results revealed the following 3 foreign bodies: (1) glass, (2) vegetative material, and (3) a pencil core. Thus, sonographic examination is useful for the detection of foreign bodies.
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Affiliation(s)
| | - Tsuneo Watanabe
- Tsuneo Watanabe, PhD, Division of Clinical Laboratory, Gifu University Hospital, 1-1, Yanagido, Gifu, 501-1194, Japan;
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23
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Shu E, Kanoh H, Murakami A, Seishima M. Potential inhibition of development of rapidly progressive interstitial lung disease by prompt and sufficient immunosuppressive treatment in patients with anti-melanoma differentiation-associated gene 5 antibody-positive dermatomyositis. J Dermatol 2016; 44:e91-e92. [PMID: 27774665 DOI: 10.1111/1346-8138.13659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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)
- En Shu
- Department of Dermatology, Gifu University School of Medicine, Gifu City, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University School of Medicine, Gifu City, Japan
| | | | - Mariko Seishima
- Department of Dermatology, Gifu University School of Medicine, Gifu City, Japan
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24
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Kanno Y, Shu E, Kanoh H, Seishima M. The antifibrotic effect of α2AP neutralization in systemic sclerosis dermal fibroblasts and mouse models of systemic sclerosis. J Dermatol Sci 2016. [DOI: 10.1016/j.jdermsci.2016.08.286] [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: 10/20/2022]
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25
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Matsuyama K, Mizutani Y, Shu E, Kanoh H, Miyazaki T, Seishima M. Enhanced dendritic cells and regulatory T cells in the dermis of porokeratosis. J Dermatol Sci 2016. [DOI: 10.1016/j.jdermsci.2016.08.314] [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: 11/29/2022]
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26
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Kato H, Kanematsu M, Watanabe H, Nagano A, Shu E, Seishima M, Miyazaki T. MR imaging findings of pilomatricomas: a radiological-pathological correlation. Acta Radiol 2016; 57:726-32. [PMID: 26253927 DOI: 10.1177/0284185115597717] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 02/02/2015] [Accepted: 07/03/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Magnetic resonance imaging (MRI) findings of pilomatricomas have yet to be determined. PURPOSE To assess the correlation between MRI and pathological findings of pilomatricomas. MATERIAL AND METHODS MR images were obtained on patients with histologically proven pilomatricomas using a 1.5-T MR scanner. The images were retrospectively reviewed for size, signal intensity compared with skeletal muscles, and enhancement patterns. Furthermore, we assessed the presence of a reticular appearance, a ring-like appearance, and peritumoral fat stranding. RESULTS We included 11 consecutive patients with 12 histologically proven pilomatricomas (3 boys/men, 8 girls/women; age range, 4-76 years; mean age, 20 years; median age, 14 years). The tumors were located in the head and neck (n = 6), upper extremities (n = 5), and lower extremities (n = 1). The maximum tumor diameter was in the range of 7-32 mm (mean, 16.5 mm). On T2-weighted (T2W) images, five tumors showed homogeneous hypointensity, whereas six showed reticular hyperintensity and one showed cystic hyperintensity. On fat-suppressed T2W images, nine tumors showed reticular hyperintensity, eight showed ring-like hyperintensity, and five showed peritumoral fat stranding. On fat-suppressed gadolinium-enhanced T1-weighted (T1W) images, one tumor showed no enhancement, whereas three showed reticular enhancement and five showed ring-like enhancement. Histologically, edematous and fibrous stroma was observed in 10 tumors, tumor capsules in 11, and inflammatory cell infiltration of the peritumoral fat tissue in nine. CONCLUSION MRI features of pilomatricomas included reticular and ring-like hyperintensities on fat-suppressed T2W images and reticular and ring-like enhancement on fat-suppressed gadolinium-enhanced T1W images.
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Affiliation(s)
- Hiroki Kato
- Department of Radiology, Gifu University School of Medicine, Gifu, Japan
| | - Masayuki Kanematsu
- Department of Radiology, Gifu University School of Medicine, Gifu, Japan
- High-level Imaging Diagnosis Center, Gifu University Hospital, Gifu, Japan
| | - Haruo Watanabe
- Department of Radiology, Gifu University School of Medicine, Gifu, Japan
| | - Akihito Nagano
- Department of Orthopedic Surgery, Gifu University School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University School of Medicine, Gifu, Japan
| | - Tatsuhiko Miyazaki
- Department of Pathology, Gifu University School of Medicine, Gifu, Japan
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27
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Adachi Y, Moriya C, Fujisawa T, Shu E, Kanoh H, Nakayama A, Yonetamari J, Seishima M. Recurrent superficial cellulitis-like erythema associated withHelicobacter cinaedibacteremia. J Dermatol 2016; 43:844-6. [DOI: 10.1111/1346-8138.13282] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yuko Adachi
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Chie Moriya
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Tomomi Fujisawa
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - En Shu
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Hiroyuki Kanoh
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Asami Nakayama
- Division of Clinical Laboratory; Gifu University Hospital; Gifu Japan
| | - Jun Yonetamari
- Division of Clinical Laboratory; Gifu University Hospital; Gifu Japan
| | - Mariko Seishima
- Department of Dermatology; Gifu University Graduate School of Medicine; Gifu Japan
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28
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Kanno Y, Shu E, Kanoh H, Seishima M. The Antifibrotic Effect of α2AP Neutralization in Systemic Sclerosis Dermal Fibroblasts and Mouse Models of Systemic Sclerosis. J Invest Dermatol 2015; 136:762-769. [PMID: 26743600 DOI: 10.1016/j.jid.2015.12.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/16/2015] [Accepted: 12/14/2015] [Indexed: 10/22/2022]
Abstract
Systemic sclerosis (SSc) is a connective tissue disease of autoimmune origin characterized by the fibrosis of skin and visceral organs, and peripheral circulatory disturbance. We recently demonstrated that α2-antiplasmin (α2AP), which is the physiological inhibitor of plasmin, is associated with the development of fibrosis. The aim of this study was to clarify the role of α2AP in the pathogenesis of SSc. The administration of α2AP in mice induced profibrotic changes, such as increased dermal thickness, collagen production, and myofibroblast differentiation. Conversely, the α2AP neutralization prevented not only profibrotic changes, but also the production of autoantibodies in bleomycin-induced mouse models of SSc. The expression of α2AP was elevated in dermal fibroblasts obtained from patients with SSc. Furthermore, α2AP treatment promoted profibrotic changes in human normal dermal fibroblasts, and α2AP neutralization reversed a profibrotic phenotype of SSc dermal fibroblasts, in the absence of plasmin. Our findings demonstrated that α2AP has a profibrotic effect probably not by the action as a plasmin inhibitor, and that the blocking of α2AP exerts an antifibrotic effect in humans and mice with SSc.
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Affiliation(s)
- Yosuke Kanno
- Department of Clinical Pathological Biochemistry, Faculty of Pharmaceutical Science, Doshisha Women's Collage of Liberal Arts, Kodo Kyo-tanabe, Kyoto, Japan.
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Yanagido Gifu, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, Yanagido Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Yanagido Gifu, Japan
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29
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Kanoh H, Shu E, Ichiki Y, Seishima M. Localized scleroderma presenting as port-wine stains: report of two cases and a literature review. Acta Derm Venereol 2015; 95:1003-4. [PMID: 25791763 DOI: 10.2340/00015555-2100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu City 501-1194, Japan.
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Abstract
Drug-induced hypersensitivity syndrome (DIHS) is a severe multiorgan system adverse drug reaction with reactivation of human herpesviruses (HHVs) such as HHV-6, HHV-7, cytomegalovirus (CMV) and Epstein-Barr virus. Various complications, including autoimmune diseases, sometimes appear during the course of DIHS. We report a case of salazosulfapyridine-induced DIHS associated with HHV-6 reactivation. Two and a half months after the onset of DIHS, subacute thyroiditis occurred, possibly associated with CMV reactivation. Prednisolone (20 mg/day) was effective for subacute thyroiditis. Long-term follow-up is needed in patients with DIHS because of the possible onset of autoimmune diseases.
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Affiliation(s)
- Mika Sato
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuki Mizuno
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kanako Matsuyama
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tetsuya Suwa
- Department of Diabetes and Endocrinology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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31
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Affiliation(s)
- En Shu
- Department of Dermatology, Gifu University School of Medicine, 1-1 Yanagido, Gifu City 501-1194, Japan.
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32
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Abstract
Eosinophilic fasciitis is clinically characterized by symmetrical scleroderma-like indurations of the skin with pain. The histological features are fascial inflammation with lymphocytes and eosinophils as well as thickened and fibrotic fascia. Lymphocytic infiltration and degeneration of the underlying muscle are rarely observed. We report a 69-year-old Japanese woman who presented with multiple areas of glossy induration and painful peau d'orange-like lesions on the chest and four extremities. T2-weighted magnetic resonance imaging showed significant hyperintense thickening of the fascia of the lower extremities. Histopathological examination of a biopsy specimen from the induration showed marked fibrinoid degeneration of the fascia and the neighboring muscle with mixed cellular infiltration of lymphocytes and eosinophils. The predominant CD8+ lymphocytic infiltrates were observed by immunohistological study. A diagnosis of eosinophilic fasciitis with myositis was made. Oral administration of prednisolone and discontinuation of exercise significantly improved the lesions and pain.
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Affiliation(s)
- Yuko Adachi
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yoko Mizutani
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - En Shu
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyuki Kanoh
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
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Tokuzumi M, Fujisawa T, Shu E, Kanoh H, Saigo C, Miyazaki T, Hamaguchi Y, Seishima M. Anti-SRP antibody-positive myopathy with universal alopecia and multiple vitiligo. Acta Derm Venereol 2015; 95:497-8. [PMID: 25325714 DOI: 10.2340/00015555-1985] [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] [Indexed: 11/16/2022] Open
Affiliation(s)
- Masataka Tokuzumi
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido , 501-1194 Gifu, Japan
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Mizuno Y, Kato G, Shu E, Ohnishi H, Fukao T, Ohara O, Fukumoto H, Katano H, Seishima M. Merkel cell polyomavirus-positive Merkel cell carcinoma in a patient with epidermodysplasia verruciformis. Acta Derm Venereol 2015; 95:98-9. [PMID: 24710670 DOI: 10.2340/00015555-1868] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Yuki Mizuno
- Department of Dermatology, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
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35
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Kawase K, Oshitani Y, Mizutani Y, Shu E, Fujine E, Seishima M. Inflammatory epidermolysis bullosa acquisita effectively treated with minocycline. Acta Derm Venereol 2014; 94:615-6. [PMID: 24577587 DOI: 10.2340/00015555-1804] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Kana Kawase
- Department of Dermatology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan
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36
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Shu E, Kanoh H, Seishima M. Scleroderma renal crisis following pericardial effusion in a Japanese female. J Dermatol 2014; 41:824-6. [PMID: 25039404 DOI: 10.1111/1346-8138.12574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 06/02/2014] [Accepted: 06/16/2014] [Indexed: 11/28/2022]
Abstract
Scleroderma renal crisis (SRC) occurs in 4-5% of Japanese patients with systemic sclerosis (SSc) and is one of the most severe complications, along with interstitial pneumonia and pulmonary hypertension, which lead to a poor outcome. The factors predicting SRC include diffuse progressive skin thickening, a duration of SSc of 4 years or less, having autoantibodies against RNA polymerase III, systemic corticosteroid (CS) administration and recent cardiac events, including pericarditis. We herein report a female case of SRC preceded by pericardial effusion during the treatment with CS for rapidly progressive skin thickening. She had none of the known autoantibodies and was successfully treated with an angiotensin II receptor blocker.
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Affiliation(s)
- En Shu
- Department of Dermatology, School of Medicine, Gifu University, Gifu City, Japan
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37
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Quick V, Shu E, Aljallad C, Yorkin M, Ciecierski C, McKinley J, Yablonsky C, Jackson R, Burslem R, Byrd-Bredbenner C. Relationships between Young Adults' Weight-Related Behaviors and Associated Health Outcomes. J Acad Nutr Diet 2012. [DOI: 10.1016/j.jand.2012.06.095] [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: 10/28/2022]
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38
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Ohashi M, Shu E, Nagai M, Murase K, Nakano H, Tamai K, Sawamura D, Hiroka T, Seishima M, Kitajima Y, Aoyama Y. Two cases of recessive dystrophic epidermolysis bullosa diagnosed as severe generalized. J Dermatol 2011; 38:893-9. [PMID: 21658117 DOI: 10.1111/j.1346-8138.2011.01230.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
Recessive dystrophic epidermolysis bullosa (RDEB) is a congenital bullous disease resulting from defective anchoring fibrils at the dermal-epidermal junction and mutations in the type VII collagen gene. In this report, we describe two patients with severe generalized RDEB. Patient 1 was a 24-day-old male infant, and patient 2 was a 1-day-old female infant. Immunofluorescence microscopy demonstrated absence of type VII collagen labeling in a skin sample of patient 1, and reduced staining in patient 2. Electron microscopy revealed absence of anchoring fibrils below the lamina densa in patient 1, and reduced or rudimentary anchoring fibrils in patient 2. Mutation analyses of COL7A1 in these patients revealed heteroallelic recessive mutations which resulted in premature termination codons (PTC): 6573+1G>C in intron81 and 886del6ins14 in exon 7 in patient 1, and 6573+1G>C in intron81 and 4535insC in exon 44 in patient 2. Heteroallelic combinations of PTC mutation generally result in the severe generalized type. Patient 2 has developed a digital fusion at age 2, which is a typical manifestation of severe generalized RDEB. The RDEB subtype is considered to be determined based on comprehensive information, including analysis of alleles, protein expression, ultrastructure and clinical symptoms after growth. However, mutation analyses of COL7A1 can provide valuable information estimating a diagnosis in early infancy.
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Affiliation(s)
- Masafumi Ohashi
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu City, Gifu
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39
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Ohashi M, Shu E, Tokuzumi M, Fujioka K, Ishizuka T, Hara A, Fujimoto M, Kaji K, Seishima M. Anti-p155/140 antibody-positive dermatomyositis with metastasis originating from an unknown site. Acta Derm Venereol 2011; 91:84-5. [PMID: 21088812 DOI: 10.2340/00015555-0955] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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40
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Sisler JJ, Seo B, Katz A, Shu E. Using administrative data to describe adherence to colon cancer follow-up testing in Manitoba, Canada. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.6079] [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: 11/20/2022] Open
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41
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Yamamoto Y, Aoyama Y, Shu E, Tsunoda K, Amagai M, Kitajima Y. Anti-desmoglein 3 (Dsg3) Monoclonal Antibodies Deplete Desmosomes of Dsg3 and Differ in Their Dsg3-depleting Activities Related to Pathogenicity. J Biol Chem 2007; 282:17866-76. [PMID: 17428808 DOI: 10.1074/jbc.m607963200] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Pemphigus vulgaris (PV) is an autoimmune blistering disease, characterized by the loss of cell-cell adhesion between epidermal keratinocytes and the presence of autoantibody against desmoglein 3 (Dsg3), which provides adhesive integrity to desmosomes between adjacent keratinocytes. We have previously shown that PV-IgG purified from patients depletes desmosomes of Dsg3. However, PV-IgG contains not only antibodies against a variety of different epitopes of Dsg3 but also against other unknown antigens. Therefore, we examined whether the Dsg3-depleting activity of PV-IgG is generated specifically by anti-Dsg3 activity in a human squamous cell carcinoma cell line (DJM-1) and normal human keratinocytes by using four different pathogenic and nonpathogenic monoclonal antibodies against Dsg3. We demonstrate that these monoclonal antibodies deplete cells and desmosomes of Dsg3, as PV-IgG does. Individual monoclonal anti-Dsg3 antibodies display characteristic limits to their Dsg3-depleting activity, which correlates with their pathogenic activities. In combination, these antibodies exert a cumulative or synergistic effect, which may explain the potent Dsg3-depleting capability of PV-IgG, which is polyclonal. Finally, although Dsg3-depletion activity correlated with AK-monoclonal antibody pathogenicity in mouse models, the residual level of Dsg3, when below approximately 50%, does not correlate with the adhesive strength index in the present study. This may suggest that although the Dsg3 depletion is not indicative for adhesive strength, the level of Dsg3 can be used as a read-out of pathogenic changes within the cell and that the Dsg3 depletion from desmosomes plays an important role in skin fragility or susceptibility to blister formation in PV patients.
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Affiliation(s)
- Yukari Yamamoto
- Department of Dermatology, Gifu University School of Medicine, Gifu City 501-1194, Japan
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42
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Yamamoto Y, Aoyama Y, Shu E, Tsunoda K, Amagai M, Kitajima Y. No activation of urokinase plasminogen activator by anti-desmoglein 3 monoclonal IgG antibodies in cultured human keratinocytes. J Dermatol Sci 2007; 47:119-25. [PMID: 17532189 DOI: 10.1016/j.jdermsci.2007.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 12/30/2006] [Revised: 04/04/2007] [Accepted: 04/11/2007] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although pemphigus vulgaris (PV)-IgG has been shown to activate urokinase plasminogen activator (uPA) in cultured keratinocytes, activation of uPA is thought to have no primary role in PV-acantholysis, because PV-IgG is still pathogenic in uPA- and tissue-PA-knockout mice. OBJECTIVE To determine if PV-IgG-induced uPA activation is due to specific antibody against Dsg3, we examined whether or not pathogenic monoclonal anti-Dsg3 antibody can activate uPA, because PV-IgG is thought to contain antibodies against unknown antigens besides Dsg3. METHODS We stimulated cultured normal human and DJM-1 keratinocytes with monoclonal anti-Dsg3 IgG1 antibodies (pathogenic AK23, AK19 and nonpathogenic AK18, AK20), negative control monoclonal mouse IgG1 and positive control PV-IgG. Cells were treated with IgGs over a time course of 24h, and uPA-protein content and activity in the culture medium were determined by enzyme-linked immunosorbent assay (ELISA) and chromogenic assay, respectively. RESULTS The uPA-protein content in samples treated with or without pathogenic, nonpathogenic, control monoclonal mouse IgG1s and PV-IgGs increased continuously up to 24h, with no differences between samples, suggesting a spontaneous secretion. In contrast, uPA activity in the culture medium of cells treated with PV-IgG increased dramatically, whereas that of cells treated with all AK-IgGs and control monoclonal mouse IgG1 did not increase at all. CONCLUSION These results suggest that PV-IgG-dependent uPA activation is not related to anti-Dsg3 antibody activity, which is an essential factor in PV-IgG acantholysis, and that it may be due to other antigens than Dsg3 or unknown factors contained in PV-IgG fraction.
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Affiliation(s)
- Yukari Yamamoto
- Department of Dermatology, Gifu University School of Medicine, Yanagido 1-1, Gifu City 501-1194, Japan
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43
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Shu E, Yamamoto Y, Aoyama Y, Kitajima Y. Intraperitoneal injection of pemphigus vulgaris-IgG into mouse depletes epidermal keratinocytes of desmoglein 3 associated with generation of acantholysis. Arch Dermatol Res 2007; 299:165-7. [PMID: 17431647 DOI: 10.1007/s00403-007-0754-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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: 11/27/2006] [Revised: 03/01/2007] [Accepted: 03/20/2007] [Indexed: 10/23/2022]
Abstract
Pemphigus vulgaris is an autoimmune blistering disease caused by antibodies against desmoglein (Dsg) 3. We previously reported that pemphigus vulgaris (PV)-IgG caused the formation of Dsg3-depleted desmosomes in normal human cultured keratinocytes and DJM-1, a human squamous cell carcinoma cell line. In the present study, we injected PV-IgG and normal human IgG into neonatal mice and examined the quantities of Dsg3 in the mouse skin. We showed that injection of PV-IgG into neonatal mice caused suprabasal blister formation and approximately 30% reduction of Dsg3 in mouse epidermal keratinocytes, compared to mice injected with normal human IgG. In addition, we showed that the quantity of Dsg3 in the skin of patients with PV did decrease, as compared to that in healthy volunteers. Our data suggests the reduction of Dsg3 might be relevant to blister formation. These results also suggest that even a partial depletion of Dsg3 may contribute to blistering in PV patients.
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Affiliation(s)
- En Shu
- Department of Dermatology, Gifu University School of Medicine, Yanagido1-1, Gifu City, Japan.
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44
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Shu E, Yamamoto Y, Sato-Nagai M, Aoyama Y, Kitajima Y. Pemphigus vulgaris-IgG reduces the desmoglein 3/desmocollin 3 ratio on the cell surface in cultured keratinocytes as revealed by double-staining immunoelectron microscopy. J Dermatol Sci 2005; 40:209-11. [PMID: 16246527 DOI: 10.1016/j.jdermsci.2005.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2005] [Revised: 09/12/2005] [Accepted: 09/13/2005] [Indexed: 11/15/2022]
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45
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Onwujekwe O, Ojukwu J, Uzochukwu B, Dike N, Ikeme A, Shu E. Where do people from different socio-economic groups receive diagnosis and treatment for presumptive malaria, in south-eastern Nigeria? Ann Trop Med Parasitol 2005; 99:473-81. [PMID: 16004706 DOI: 10.1179/136485905x51283] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The relationship between the socio-economic status (SES) of a household and its sources of malaria diagnosis and treatment was explored in south-eastern Nigeria. One aim was to see if, as seems likely, the poorest people generally seek care from 'low-level' providers, such as traditional healers and community-based healthworkers, because of their severe budget constraints. Interviewer-administered questionnaires were used to collect information from 1197 randomly selected respondents from four villages where malaria is holo-endemic. An index was used to categorize the study households into SES quartiles. The self-diagnosis of presumptive malaria and the use of patent-medicine dealers for treatment were very common among all the SES groupings. Compared with the other interviewees, however, the least-poor were significantly more likely to rely on laboratory tests for diagnosis and to visit hospitals when seeking treatment for presumptive malaria. The most-poor, in contrast, were significantly more likely to seek treatment from traditional healers or community-based healthworkers. Thus, even though the use of low-level providers was so common, there was still evidence of wealth-related inequity--in terms of the probabilities of the good diagnosis and treatment of malaria. Improvements in the quality of malaria diagnosis and treatment by the providers patronised by the most-poor villagers would help to redress this inequity, at least in the short- to medium-term.
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Affiliation(s)
- O Onwujekwe
- Gates Malaria Partnership, London School of Hygiene and Tropical Medicine, UK.
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46
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Nakajima K, Hirade K, Ishisaki A, Matsuno H, Suga H, Kanno Y, Shu E, Kitajima Y, Katagiri Y, Kozawa O. Akt regulates thrombin-induced HSP27 phosphorylation in aortic smooth muscle cells: function at a point downstream from p38 MAP kinase. Life Sci 2005; 77:96-107. [PMID: 15848222 DOI: 10.1016/j.lfs.2004.12.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [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: 07/22/2004] [Accepted: 12/21/2004] [Indexed: 11/28/2022]
Abstract
We previously reported that p38 MAP kinase takes part in thrombin-induced HSP27 phosphorylation in aortic smooth muscle A10 cells. In the present study, we investigated whether Akt is involved in the phosphorylation of HSP27 and the role of adenylyl cyclase-cAMP system. Thrombin time-dependently induced the phosphorylation of heat shock protein 27 (HSP27) and Akt in aortic smooth muscle A10 cells. SB203580, a p38 MAP kinase inhibitor, significantly suppressed the thrombin-induced phosphorylation of Akt and the Akt inhibitor suppressed the phosphorylation of HSP27. Furthermore, the thrombin-induced phosphorylation of HSP27, p38 MAP kinase and Akt were decreased by dibutyryl-cAMP (DBcAMP). These results strongly suggest that Akt functions the thrombin-induced phosphorylation of HSP27 at a point downstream from p38 MAP kinase in aortic smooth muscle cells and the adenylyl cyclase-cAMP system is upstream regulator of the HSP27 phosphorylation in these cells.
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Affiliation(s)
- Keiichi Nakajima
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
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47
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Shu E, Matsuno H, Kitajima Y, Kozawa O. Role of 2-Antiplasmin in Cardiovascular System. LETT DRUG DES DISCOV 2005. [DOI: 10.2174/1570180053765129] [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: 11/22/2022]
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48
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Shu E, Matsuno H, Akamastu S, Kanno Y, Suga H, Nakajima K, Ishisaki A, Takai S, Kato K, Kitajima Y, Kozawa O. alphaB-crystallin is phosphorylated during myocardial infarction: involvement of platelet-derived growth factor-BB. Arch Biochem Biophys 2005; 438:111-8. [PMID: 15907784 DOI: 10.1016/j.abb.2005.04.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2004] [Revised: 04/11/2005] [Accepted: 04/12/2005] [Indexed: 01/25/2023]
Abstract
alphaB-crystallin is the most abundant low-molecular-weight heat shock protein in heart and recent studies have demonstrated that it plays a cardioprotective role during myocardial infarction both in vivo and in vitro. On the other hand, platelet-derived growth factor (PDGF), a potent serum mitogen, has been reported to improve cardiac function after myocardial infarction. In the present study, using a mouse myocardial infarction model, we investigated whether alphaB-crystallin is phosphorylated during myocardial infarction and the implication of PDGF-BB. Phosphorylation of alphaB-crystallin at Ser-59 was time dependently induced and plasma PDGF-BB levels were concomitantly increased. Moreover, PDGF-BB-stimulated phosphorylation of alphaB-crystallin was suppressed by SB203580, a specific inhibitor of p38 mitogen-activated protein (MAP) kinase, in primary cultured cardiac myocytes. Our results indicate that PDGF-BB induces phosphorylation of alphaB-crystallin via p38 MAP kinase during myocardial infarction.
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Affiliation(s)
- En Shu
- Department of Pharmacology, Gifu University Graduate School of Medicine, Japan
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49
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Suga H, Nakajima K, Shu E, Kanno Y, Hirade K, Ishisaki A, Matsuno H, Tanabe K, Takai S, Akamatsu S, Kato K, Oiso Y, Kozawa O. Possible involvement of phosphatidylinositol 3-kinase/Akt signal pathway in vasopressin-induced HSP27 phosphorylation in aortic smooth muscle A10 cells. Arch Biochem Biophys 2005; 438:137-45. [PMID: 15896702 DOI: 10.1016/j.abb.2005.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 01/18/2005] [Revised: 04/02/2005] [Accepted: 04/08/2005] [Indexed: 11/25/2022]
Abstract
We previously reported that p38 mitogen-activated protein (MAP) kinase takes a part in arginine vasopressin (AVP)-induced heat shock protein 27 (HSP27) phosphorylation in aortic smooth muscle A10 cells. In the present study, we investigated whether phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) is involved in the phosphorylation of HSP27 in these cells. AVP time-dependently induced the phosphorylation of PI3K and Akt. Akt inhibitor, 1l-6-hydroxymethyl-chiro-inositol 2-(R)-2-O-methyl-3-O-octadecylcarbonate, partially suppressed the phosphorylation of HSP27. The AVP-induced HSP27 phosphorylation was attenuated by LY294002, a PI3K inhibitor. The combination of Akt inhibitor and SB203580, a p38 MAP kinase inhibitor, completely suppressed the AVP-induced phosphorylation of HSP27. Furthermore, LY294002 or Akt inhibitor did not affect the AVP-induced phosphorylation of p38 MAP kinase and SB203580 did not affect the phosphorylation of PI3K or Akt. These results suggest that PI3K/Akt plays a part in the AVP-induced phosphorylation of HSP27, maybe independently of p38 MAP kinase, in aortic smooth muscle A10 cells.
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Affiliation(s)
- Hidetaka Suga
- Department of Pharmacology, Gifu University Graduate School of Medicine, Japan
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50
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Tanabe K, Hirade K, Ishisaki A, Shu E, Suga H, Kitajima Y, Katagiri Y, Dohi S, Kozawa O. Possible involvement of p44/p42 MAP kinase in retinoic acid-stimulated vascular endothelial growth factor release in aortic smooth muscle cells. Atherosclerosis 2005; 175:245-51. [PMID: 15262180 DOI: 10.1016/j.atherosclerosis.2004.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2003] [Revised: 05/02/2004] [Accepted: 05/06/2004] [Indexed: 10/26/2022]
Abstract
Retinoic acid modulates cell growth and differentiation of the vascular system. Vascular endothelial growth factor (VEGF) is known as a vascular permeability factor and a potent mitogen for vascular endothelial cells. In the present study, we investigated whether retinoic acid induces VEGF release in aortic smooth muscle A10 cells and if so, the mechanism of VEGF release. Retinoic acid stimulated VEGF release dose-dependently over the range 0.1 nM-0.1 microM. The retinoic acid-stimulated VEGF release was significantly reduced by actinomycin D. Retinoic acid induced the phosphorylation of p44/p42 mitogen-activated protein (MAP) kinase but not p38 MAP kinase or stress-activated protein kinase/c-Jun N-terminal kinase among the MAP kinase superfamily. This effect of retinoic acid was dose-dependent (30 nM-5 microM) and the maximum effect was observed at 0.3 microM. The retinoic acid-stimulated release of VEGF was significantly reduced by PD98059 and U0126, specific MEK inhibitors, which attenuated the retinoic acid-induced phosphorylation of p44/p42 MAP kinase. These results strongly suggest that retinoic acid stimulates the release of VEGF in a p44/p42 MAP kinase-dependent manner in aortic smooth muscle cells.
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Affiliation(s)
- Kumiko Tanabe
- Department of Anesthesiology and pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
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