Publications by authors named "Fukuda Tetsuya"

Purpose: Type I conventional dendritic cells (cDC1s) play a key role in priming anti-tumor cytotoxic T cells and inducing immune tolerance for self-antigens and tumor antigens. However, it remains unclear whether cDC1 has a protective or pathogenic role in multiple myeloma. We investigated a role of cDC1 in myeloma progression.

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  • This study evaluated the effectiveness of cine magnetic resonance feature tracking (FT) in diagnosing constrictive pericarditis (CP) and pericardial adhesions in patients who underwent cardiac MRI from 2011 to 2021.
  • A total of 24 patients suspected of having CP were compared to age-matched individuals with heart failure and healthy volunteers, using various diagnostic assessments including septal bounce and adhesion detection.
  • Results indicated that CMR-FT showed high sensitivity and specificity for identifying significant CP and pericardial adhesions, making it a reliable diagnostic tool in clinical settings.
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  • Type 2 diabetes mellitus (T2DM) significantly increases the risk of developing hepatocellular carcinoma (HCC), which is typically diagnosed late in diabetes patients due to insufficient surveillance criteria.
  • This study involved 330 T2DM patients with nonviral chronic liver disease diagnosed using imaging techniques, comparing clinical parameters between those with and without HCC.
  • Key risk factors for HCC included age over 65, alcohol consumption, and specific laboratory results, highlighting the need for adapted HCC surveillance strategies tailored to both younger and older T2DM patients.
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Background The post-pandemic phase of the coronavirus infectious disease that emerged in 2019 (COVID-19) has necessitated updates in radiology, with emerging evidence suggesting tracheobronchial wall thickness as a potential new diagnostic marker. Purpose To evaluate the accuracy of chest computed tomography (CT) scans in identifying COVID-19 by assessing tracheobronchial wall thickness in mid-2023. Material and methods A retrospective review was conducted on 60 patients who underwent thoracoabdominal CT and the severe acute respiratory syndrome coronavirus (SARS-CoV-2) antigen tests during emergency visits between June and August 2023.

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  • Scientists want to understand how blood flows around arteriovenous malformations (AVMs) in the brain to treat them better.
  • They used a special scanning technique called PET to look at how blood and oxygen are working in patients with unruptured AVMs.
  • They found that their new method (DBFM) works well to ensure accurate measurements, making it a promising way to study blood flow changes in patients with AVMs.
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Background: Direct oral anticoagulants are the established drugs for treating pulmonary thromboembolism. The advantage of direct oral anticoagulants over conventional therapy for clot lysis and right ventricular unloading in the acute phase remains unclear. This study aimed to evaluate the effect of acute treatment with direct oral anticoagulants on clot dissolution and right ventricular unloading in intermediate high-risk pulmonary thromboembolism.

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Background: Vessel injury is a common complication during balloon pulmonary angioplasty (BPA). For persistent hemoptysis, gelatin sponge embolization (GSE) is considered, but its impact on subsequent perfusion in embolized vessels remains unknown. This study explores the feasibility of revascularization in vessels post-GSE.

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Balloon pulmonary angioplasty (BPA) is beneficial for patients with chronic thromboembolic pulmonary disease (CTEPD) with pulmonary hypertension (PH). However, the clinical benefit of BPA for the patients with CTEPD without PH remains unknown. In this study, we aimed to evaluate the efficacy, safety, and long-term outcomes of BPA in patients with CTEPD without PH.

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  • - The study highlights the challenge of insufficient diagnostic tools for nuclear medicine imaging in newborns, particularly those with extremely low birth weight, and suggests investigating new technology to address this issue.
  • - Researchers created a phantom model of a 500-g infant to test cardiac PET imaging with SiPM technology, assessing its ability to visualize a 3-mm myocardial defect using two different tracers (F-FDG and F-flurpiridaz).
  • - Results showed that while SiPM PET could effectively image the heart, both tracers overestimated defect accumulation, with F-flurpiridaz providing better contrast, suggesting its preference for future studies if limited to one tracer.
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  • This study looked at the differences in liver extracellular volume fraction (ECV) between the left and right lobes in patients with chronic thromboembolic pulmonary hypertension (CTEPH) and how these differences relate to heart function and medication intolerance.
  • Researchers analyzed data from 72 patients using CT scans and right heart catheterization (RHC) to assess liver ECVs and their correlation with heart function metrics.
  • The findings revealed that the left liver lobe's ECV was higher than the right, which was linked to lower cardiac index and a good predictor of intolerance to pulmonary hypertension medication.
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  • Black hairy tongue (BHT) is a condition where the tongue's filiform papillae become elongated due to hyperkeratosis, giving it a "hairy" look.
  • Two cases in children showed BHT and tooth discoloration linked to antibiotic treatments: one from linezolid and the other from meropenem and vancomycin.
  • In both cases, symptoms improved days after the antibiotics were stopped, highlighting a potential side effect of prolonged antimicrobial use.
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Background/aim: The combination of venetoclax (VEN) and azacitidine (AZA) (VEN+AZA) leads to higher complete remission rates and longer overall survival (OS) in patients with untreated acute myeloid leukemia (AML) who are ineligible for intensive combination chemotherapy. In practice, the doses of VEN and AZA are reduced at the attending physician's discretion to avoid adverse events; however, the impact of dose and duration reductions has not been fully clarified. We analyzed whether the efficacy was maintained with reduced VEN+AZA compared to AZA monotherapy in the real world.

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Background: The structural and functional characteristics of the heart in patients with diabetes mellitus (DM) and without myocardial infarction (MI) are not fully understood.

Methods: We retrospectively analysed the data of patients with left ventricular ejection fraction (LVEF) ≥ 40% who underwent contrast-enhanced cardiac magnetic resonance imaging (CMR), which was also used to exclude MI, at two hospitals. Volumetric data and extracellular volume fraction (ECVf) of the myocardium evaluated using CMR were compared between patients with and without DM, and their association with diastolic function was evaluated.

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Introduction: In patients with type 2 diabetes (T2D), treatment with sodium-glucose cotransporter-2 (SGLT2) inhibitors has been shown to reduce hospital admission rates for heart failure (HF). However, the multiple mechanisms hypothesized and investigated to explain the cardioprotection of SGLT2 inhibitors are not fully understood.

Objectives: The effect of luseogliflozin on myocardial flow reserve (MFR) in patients with T2D (LUCENT-J) study aims to examine the effects of SGLT2 inhibitors on myocardial perfusion.

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Purpose: The purpose of the study was to evaluate the efficacy and safety of pre-emptive transcatheter arterial embolization (P-TAE) of aortic side branches to prevent type II endoleak in patients with abdominal aortic aneurysm after endovascular abdominal aneurysm repair (EVAR).

Materials And Methods: This multicenter, prospective, single-arm trial enrolled 100 patients with abdominal aortic aneurysm from nine hospitals between 2018 and 2021. There were 85 men and 15 women, with a mean age of 79.

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  • The study aimed to assess the safety and effectiveness of pre-emptive transcatheter arterial embolization (P-TAE) for aortic side branches to prevent Type 2 endoleaks (EL2) before endovascular aneurysm repair (EVAR) using the Excluder stent-graft system.
  • A total of 80 patients participated, with successful P-TAE performed on 81.6% of aortic side branches, leading to a 25.7% incidence of EL2 at 6 months and significant aneurysmal sac shrinkage in a portion of patients.
  • The findings suggest that P-TAE is a safe and effective approach, aiding in early aneurysmal sac shrinkage and
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Objectives: This study aimed to determine the relationship between covering the intercostal artery branching of the Adamkiewicz artery (ICA-AKA) and spinal cord ischemia (SCI) during thoracic endovascular aortic repair (TEVAR).

Methods: Patients who underwent TEVAR from 2008 to 2022 were enrolled. Stent grafts covered the ICA-AKA in 108 patients (covered AKA group) and stent grafts didn't cover the ICA-AKA in 114 patients (uncovered AKA group).

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Background: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), the most common form of hereditary cerebral small vessel disease (SVD), currently lacks disease-modifying treatments. Adrenomedullin (AM), a vasoactive peptide with angiogenic, vasodilatory, anti-inflammatory, and anti-oxidative properties, shows potential effects on the neuro-glial-vascular unit.

Objective: The AdrenoMedullin for CADASIL (AMCAD) study aims to assess the efficacy and safety of AM in patients with CADASIL.

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Invasive assays and lung tumor-bearing mice models using a human lung adenocarcinoma cell line A549 cells transfected with the Klotho (KL) gene, A549/KL cells, have confirmed that KL suppresses invasive/metastatic potential. This study aimed to identify the co-expression protein networks and proteomic profiles associated with A549/KL cells to understand how Klotho protein expression affects molecular networks associated with lung carcinoma malignancy. A two-step application of a weighted network correlation analysis to the cells' quantitative proteome datasets of a total of 6,994 proteins, identified by mass spectrometry-based proteomic analysis with data-independent acquisition (DIA), identified one network module as most significantly associated with the A549/KL trait.

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  • A 58-year-old female with a history of bone marrow transplantation for myelodysplastic syndrome developed invasive pneumococcal disease (IPD) 14 years post-transplant.
  • Despite being vaccinated against pneumococcus twice in the past, she presented with pneumonia and was hospitalized with a confirmed infection, receiving antibiotics.
  • Unfortunately, she passed away three days later, highlighting the need for ongoing vigilance and preventive strategies against pneumococcal infections long after stem cell transplantation.
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Although cytomegalovirus (CMV) and Epstein-Barr virus (EBV) are considered latent viruses, their reactivation occurs in immunosuppressed conditions. We previously reported that CMV and EBV are reactivated in patients receiving immunosuppressive therapy and/or chemotherapy. This retrospective, single-center study aimed to determine the frequency of viral reactivation and clinical characteristics of patients with B cell lymphoma (B-ML) receiving chemotherapy.

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  • The study aimed to develop an automatic method for evaluating bone marrow (BM) cellularity using image analysis, moving away from the reliance on visual estimates.
  • Researchers analyzed hematoxylin and eosin (HE)-stained bone marrow specimens from patients, comparing three image analysis methods against traditional visual assessments from pathology reports.
  • Method C proved to be the most effective, achieving a high correlation with visual estimates and accurately detecting both non-fatty and cell nuclear areas in the bone marrow samples.
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Objectives: This study aimed to reveal the association between lower-profile stent graft (LPSG) and embolism during thoracic endovascular aortic repair for non-dissecting distal arch and descending thoracic aortic aneurysm.

Methods: This study reviewed data of 35 patients who underwent thoracic endovascular aortic repair with LPSG (27 males; age: 77 ± 9.2 years) and 312 who underwent thoracic endovascular aortic repair with conventional-sized stent graft (CSSG) (247 males; age: 77 ± 7.

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  • Chronic thromboembolic pulmonary hypertension results from unresolved blood clots in the lungs, affecting blood flow dynamics, but research on this is limited.
  • This study aimed to analyze how blood flow changed in patients with this condition before and after two treatments: pulmonary endarterectomy and balloon pulmonary angioplasty, using advanced computational fluid dynamics.
  • Results showed that patients had lower blood flow velocity and higher stagnation compared to healthy controls; both treatments improved blood flow dynamics, with endarterectomy redistributing blood and angioplasty enhancing flow and vessel expansion.
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