Publications by authors named "Toru Michitsuji"

Article Synopsis
  • - The study aimed to analyze how denosumab treatment affects serum cytokines, chemokines, and bone-related factors in patients with rheumatoid arthritis over 12 months.
  • - Patients were divided into two groups: one receiving traditional RA treatments plus denosumab and the other continuing only traditional treatments, with biomarkers measured at the start, 6 months, and 12 months.
  • - Results showed that denosumab treatment led to significant decreases in certain bone-related proteins, suggesting it may help prevent bone damage by lowering specific factors compared to the group that only received standard therapy.
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Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is an autoimmune vasculitis characterized by the production of antibodies against ANCA, with unclear pathogenesis. With the ongoing COVID-19 pandemic, COVID-19 mRNA vaccination has been available in Japan since February 2021. Although autoimmune symptoms have been reported after COVID-19 vaccinations, there have been no clinical investigations regarding the relationship between COVID-19 mRNA vaccines and the pathogenesis of AAV.

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We encountered a 78-year-old Japanese man with IgG4-related sialoadenitis complicated with marked eosinophilia. We diagnosed him with IgG4-RD (related disease) with a submandibular gland tumor, serum IgG4 elevation, IgG4-positive plasma cell infiltration, and storiform fibrosis. During follow-up after total incision of the submandibular gland, the peripheral eosinophil count was markedly elevated to 29,480/μL.

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Background: Psychiatry rotation has been mandatory in the Japanese postgraduate residency system since 2020. Some psychiatry-related competency items are stipulated as mandatory for residents. The current study aimed to clarify whether psychiatry rotation affected residents' subjective achievement of these competency items.

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Article Synopsis
  • - The study evaluated the effectiveness and safety of canakinumab for Japanese patients suffering from familial Mediterranean fever (FMF) who did not respond to or could not tolerate colchicine, analyzing a total of 13 patients.
  • - After 24 weeks of treatment, there was a significant reduction in attack frequency from 2.00 to 0.50, with 23% of patients experiencing complete resolution of attacks.
  • - The results indicate that canakinumab is both effective and safe for this specific group of patients, although one case of small intestinal ulceration led to treatment discontinuation.
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Objective: To compare the efficacy and safety of tofacitinib and baricitinib in patients with RA in a real-world setting.

Methods: A total of 242 patients with RA who were treated with tofacitinib (n = 161) or baricitinib (n = 81) were enrolled. We evaluated efficacy and safety between tofacitinib and baricitinib using multivariable analyses to avoid confounding.

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Objectives: To investigate the utility of 18F-FDG PET/CT in the diagnostic procedure of IgG4-related disease (IgG4-RD), we analysed the association between quantitative method of 18F-FDG PET/CT and histological findings.

Methods: Twenty-one patients with IgG4-RD in whom 18F-FDG PET/CT was performed at the time of diagnosis were enrolled. Tissue biopsy was performed at 24 sites in 21 patients.

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We report a case of reactive arthritis (ReA) triggered by Yersinia enterocolitica enteritis. A 24-year-old Japanese man developed polyarthritis in the lower limbs. Two weeks prior to these symptoms, he noted diarrhea, right lower abdominal pain and a fever.

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Objectives: To determine the prevalence of ultrasonographic abnormalities of sternoclavicular joints (SCJ) and peripheral joints (PJ) in patients with synovitis-acne-pustulosis-hyperostosis-osteitis (SAPHO) syndrome.

Methods: Thirteen patients with SAPHO syndrome who fulfilled diagnostic criteria proposed by Kahn for SAPHO syndrome 2003 and 13 healthy individuals age- and sex-matched were enrolled. Synovitis, defined by synovial hypertrophy with power Doppler (PD) signals, of the SCJ and the PJ including wrist, MCP, PIP, and the other symptomatic joints were evaluated by ultrasound (US).

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A 78-year-old woman diagnosed with cyclic neutropenia 5 years previously had been treated with recombinant granulocyte-colony stimulating factor (G-CSF). She developed fever, tenderness and distension of temporal arteries after the treatment with G-CSF. Magnetic resonance imaging and ultrasonography revealed wall thickening of the temporal arteries.

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Objective: To clarify whether magnetic resonance imaging (MRI) bone edema predicts the development of rapid radiographic progression (RRP) in the Nagasaki University Early Arthritis Cohort of patients with early-stage rheumatoid arthritis (RA).

Methods: Patients with early-stage RA (n = 76) were enrolled and underwent 1.5-T MRI of both wrists and finger joints.

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A reduced level of the single-pass transmembrane protein α-Klotho is known to be associated with neuronal damage. We investigated whether α-Klotho in cerebrospinal fluid (CSF) could be a candidate marker for the diagnosis of neuropsychiatric systemic lupus erythematosus (NPSLE). We analyzed the laboratory data, symptoms and radiological image findings of 34 NPSLE patients.

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Synopsis of recent research by authors named "Toru Michitsuji"

  • - Toru Michitsuji's recent research focuses on the treatment and management of autoimmune diseases, particularly systemic lupus erythematosus and rheumatoid arthritis, highlighting therapeutic switches and the effects of specific medications like anifrolumab and denosumab.
  • - His studies reveal associations between new cases of ANCA-associated vasculitis and COVID-19 vaccinations, and explore the efficacy of canakinumab in familial Mediterranean fever, suggesting ongoing clinical challenges in the context of recent immunization efforts.
  • - Michitsuji also investigates diagnostic approaches in autoimmune conditions, including the role of imaging techniques like 18F-FDG PET/CT in IgG4-related diseases, aiming to improve understanding of disease mechanisms and patient outcomes.