3,100 results match your criteria: "Toho University School of Medicine.[Affiliation]"

Background: The third AI boom, which began in 2010, has been characterized by the rapid evolution and diversification of AI and marked by the development of key technologies such as machine learning and deep learning. AI is revolutionizing the medical field, enhancing diagnostic accuracy, surgical outcomes, and drug production.

Methods: This review includes explanations of digital transformation (DX), the history of AI, the difference between machine learning and deep learning, recent AI topics, medical AI, and AI research in male infertility.

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Purpose: The severe pathogenic ancient-type COVID-19, SARS-CoV-2/WA-1/2020 was the predominant gene variant in early 2020 in Japan, however, its transmissibility was uncertain. The period before the public commenced using any personal protective equipment (PPE) was evaluating to describe the transmissibility of the SARS-CoV-2/WA-1/2020. We analyzed the secondary attack rate (SAR) among close contacts and the risk factor for SAR.

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Background: The persistence of diagnostic errors, despite advances in medical knowledge and diagnostics, highlights the importance of understanding atypical disease presentations and their contribution to mortality and morbidity. Artificial intelligence (AI), particularly generative pre-trained transformers like GPT-4, holds promise for improving diagnostic accuracy, but requires further exploration in handling atypical presentations.

Objective: This study aimed to assess the diagnostic accuracy of ChatGPT in generating differential diagnoses for atypical presentations of common diseases, with a focus on the model's reliance on patient history during the diagnostic process.

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Background: Although vancomycin is typically employed against methicillin-resistant Staphylococcus aureus (MRSA) infections, the optimal ratio of 24-h area under the concentration-time curve to minimum inhibitory concentration (AUC/MIC) for severe or complicated infections lacks clear guideline recommendations. This study aimed to determine the target AUC/MIC ratio associated with treatment outcomes of infections treated with vancomycin.

Methods: This retrospective multicenter cohort study included adult patients receiving ≥ 5 days of vancomycin for severe/complicated MRSA infections (e.

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Melanoma is an aggressive tumour with poor prognosis that arises from the malignant transformation of melanocytes. Over the past few decades, intense research into the pathogenesis of melanoma has led to the development of BRAF and immune checkpoint inhibitors, including antibodies against programmed cell death protein 1 (PD-1) and cytotoxic T lymphocyte-associated protein 4 (CTLA-4), which have shown clinically significant efficacy. However, some tumours do not respond to these therapies initially or become treatment resistant.

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Purpose: This study aimed to evaluate the clinicopathological and prognostic significance of preoperative serum creatine kinase (CK) levels in colorectal cancer.

Methods: This study analyzed 1169 patients with colorectal cancer at stages 0 (n = 35), I (n = 301), II (n = 456), III (n = 339), and IV (n = 38). The CK cut-off value was 52 U/L to predict recurrence based on receiver operative characteristics curve.

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Metabolic dysfunction-associated steatohepatitis (MASH), previously called non-alcoholic steatohepatitis (NASH), is a growing concern worldwide, with liver fibrosis being a critical determinant of its prognosis. Monocyte-derived macrophages have been implicated in MASH-associated liver fibrosis, yet their precise roles and the underlying differentiation mechanisms remain elusive. In this study, we unveil a key orchestrator of this process: long chain saturated fatty acid-Egr2 pathway.

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Objective: To perform laryngeal framework surgery for unilateral vocal fold paralysis and obtain favorable voice improvement, it is necessary to accurately determine the vocal fold and arytenoid cartilage positions. Thus, the position and angle of the paralyzed vocal folds and arytenoid cartilage projected onto the affected thyroid plate were measured using computed tomography (CT) before and after surgery.

Methods: Forty-six male patients with thyroid cartilage ossification observed on preoperative CT and vocal fold paralysis were included.

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Article Synopsis
  • The study explores the link between nutritional status and mortality in elderly patients with idiopathic pulmonary fibrosis (IPF), focusing on those aged 65 and older who attended a rehabilitation department over seven years.
  • An analysis of 170 patients found that while severe malnutrition was absent, moderate malnutrition indicated a significantly higher risk of mortality compared to normal and mild groups, highlighting the importance of the CONUT score.
  • Multivariate analysis identified factors such as GAP stage, mMRC scale, and CONUT score as significant predictors of all-cause mortality, underscoring the need for nutritional assessment in managing IPF patients.
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  • This study explores the link between fumarate hydratase (FH) autoantibodies and gastric cancer to assess their potential as biomarkers.
  • The analysis involved 116 gastric cancer patients and 96 healthy controls, revealing that serum FH autoantibody levels were significantly higher in cancer patients, even in early-stage cases.
  • Low levels of these antibodies correlate with poorer outcomes, such as distant metastasis and overall survival, suggesting they could serve as important indicators for early diagnosis and prognosis in gastric cancer.
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SDHAF1 confers metabolic resilience to aging hematopoietic stem cells by promoting mitochondrial ATP production.

Cell Stem Cell

August 2024

Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; Department of Cell Fate Biology and Stem Cell Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan. Electronic address:

Article Synopsis
  • Aging affects stem cells, leading to decreased function and impacting tissue health, but hematopoietic stem cells (HSCs) develop a resilience that helps them survive.* -
  • Old HSCs shift their metabolism by activating the pentose phosphate pathway, allowing them to resist oxidative stress and operate independently of glycolysis.* -
  • The study reveals that old HSCs enhance energy production through mitochondrial changes, aided by increased levels of a specific factor (SDHAF1), improving their survival during stress and addressing age-related blood cell formation issues.*
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Objective/background: To clarify whether mobile sleep applications alleviate insomnia symptoms among adults from multi-community.

Patients/methods: A literature search was conducted using the PubMed, Cochrane, PsycINFO, and Web of Science databases for articles related to mobile technology and sleep interventions published between database inceptions and March 27, 2023. We pooled relevant data using a random-effects model, and a meta-analysis was performed using a web version of the Cochrane Review Manager.

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Article Synopsis
  • A 70-year-old male with pneumonia and bacteremia, who has a history of insomnia and consumes alcohol and natto, was diagnosed with a specific bacterial infection.
  • Initial antibiotic treatment failed, leading to a bronchoalveolar lavage that showed a high number of lymphocytes and the pathogen present in the fluid.
  • Whole-genome sequencing confirmed that the bacterial strain from the patient’s blood, lung fluid, and the natto he consumed were the same, indicating that the pathogen was the cause of his pneumonia and bacteremia.
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Objectives: We investigated the long-term effectiveness, safety, and factors affecting Japanese Health Assessment Questionnaire (J-HAQ) improvement during abatacept treatment in Japanese rheumatoid arthritis (RA) patients.

Methods: The Orencia® Registry in Geographically Assembled Multicenter Investigation (ORIGAMI) study is an ongoing observational study of biologic-naïve RA patients with moderate disease activity treated with subcutaneous abatacept (125 mg, once weekly). Patients treated with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) were extracted from the Institute of Rheumatology, Rheumatoid Arthritis (IORRA) registry as a historical, weighted control group.

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Effective treatment for advanced lung cancer and idiopathic interstitial pneumonia (IIP) remains an unmet medical need. The relationship between chemotherapy's effectiveness in advanced lung cancer and the risk of acute exacerbation of IIP is poorly investigated. There is limited evidence that patients who experience an acute exacerbation of IIPs during cytotoxic chemotherapy have poorer outcomes than those who do not.

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Article Synopsis
  • * A majority of respondents indicated that over half of newly diagnosed patients were 65 or older, with a focus on achieving remission or low disease activity, while also prioritizing patient safety.
  • * Rheumatologists expressed concern about comorbidities and other factors that could interfere with optimal treatment, indicating a more complex management landscape for older patients with LORA.
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  • A study evaluated the effectiveness and safety of immune-checkpoint inhibitor combination therapy in 71 patients with unresectable or metastatic esophageal cancer from March 2021 to December 2022.
  • The therapy showed a 58% response rate in patients with measurable tumors and an 80% disease control rate overall, with some patients undergoing successful surgery afterward.
  • Key factors influencing progression-free survival included patients' performance status and C-reactive protein levels, indicating that those with better health and lower inflammation might benefit most from this treatment.
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A randomized, placebo-controlled, double-blind, parallel-group clinical study was conducted to examine the effects of ingesting a heat-killed lactic acid bacterium, No. 1088 (LJ88) on temporal gastroesophageal reflux-related symptoms in healthy volunteers. A total of 120 healthy Japanese volunteers of both sexes, aged between 21 and 63 years, whose Frequency Scale for the Symptoms of Gastroesophageal Reflux Disease (FSSG) total score was 8 or greater, but who were not diagnosed with functional dyspepsia according to the Rome IV classification, were enrolled.

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Given that esophageal cancer is highly malignant, the discovery of novel prognostic markers is eagerly awaited. We performed serological identification of antigens by recombinant cDNA expression cloning (SEREX) and identified SKI proto-oncogene protein and transmembrane p24 trafficking protein 5 (TMED5) as antigens recognized by serum IgG antibodies in patients with esophageal carcinoma. SKI and TMED5 proteins were expressed in Escherichia coli, purified by affinity chromatography, and used as antigens.

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Article Synopsis
  • The study aimed to evaluate the safety of long-term use of ritodrine hydrochloride, a tocolytic agent used in Japan for treating threatened preterm labor, particularly its link to maternal deaths.
  • It analyzed data from 390 maternal death cases from 2010 to 2020, revealing that 32 involved the administration of ritodrine, with specific doses and routes documented.
  • The findings indicated higher instances of serious health issues like perinatal cardiomyopathy and pulmonary edema in patients who received ritodrine, suggesting a potential risk associated with its long-term use during pregnancy.
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Background: We aimed to reveal the effect of abatacept (ABT) on atherosclerosis in rheumatoid arthritis (RA) patients, 3-year efficacy for arthritis, and safety in a population of older vs. younger patients.

Methods: In this open-label, prospective, observational study, patients were stratified into four groups: younger (20-64 years old) and older (≥ 65 years) patients taking ABT (AY and AO) and conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) (CY and CO).

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The outbreak of multispecies carbapenemase-producing Enterobacterales associated with pediatric ward sinks: IncM1 plasmids act as vehicles for cross-species transmission.

Am J Infect Control

July 2024

Department of Infection Prevention and Control, Toho University Omori Medical Center, Tokyo, Japan; Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan; Department of Clinical Laboratory, Toho University Omori Medical Center, Tokyo, Japan.

Background: This study describes an outbreak caused by multispecies carbapenemase-producing Enterobacterales (CPE) occurring in a pediatric ward at an academic medical center in Tokyo.

Methods: The index case involved a 1-year-old boy with Klebsiella variicola (CPE) detected in anal swabs in June 2016. The second case was Klebsiella quasipneumoniae (CPE) occurred in March 2017 followed by further spread, leading to the declaration of an outbreak in April 2017.

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Objectives: The aim is to access the real-world clinical management of physicians who treat Takayasu arteritis (TAK) and giant cell arteritis (GCA) after the publication of the Japanese Circulation Society (JCS) 2017 Guidelines for the Management of Vasculitis Syndrome.

Methods: This descriptive, cross-sectional study utilized self-administered electronic questionnaires, which were answered in February 2022 by physicians treating TAK or GCA and registered with Macromill Inc.

Results: The 329 survey respondents were enrolled.

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