Publications by authors named "Yuasa T"

Objectives: Higher body mass index (BMI) is reportedly associated with improved prognosis of patients with various cancers. However, it is unclear whether this phenomenon, also known as the obesity paradox, applies to metastatic renal cell carcinoma (mRCC). We aimed to determine the prognostic significance of BMI in patients with mRCC receiving first-line therapies.

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Background And Objective: Patients receiving immune checkpoint blockade (ICB) therapy may experience periods of prolonged disease control without a need for systemic therapy. Treatment-free survival (TFS) is an important measure for this period, but no data are available for patients with metastatic renal cell carcinoma (mRCC) starting first-line agents. Our aim was to analyze TFS outcomes for patients with mRCC starting first-line therapy.

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Purpose: We are developing a three-dimensional X-ray fluorescence computed tomography (3D XFCT) system using non-radioactive-labeled compounds for preclinical studies as a new modality that provides images of biological functions. Improvements in image quality and detection limits are required for the in vivo imaging. The aim of this study was to improve the quality of XFCT images by applying a deep image prior (DIP), which is a type of convolutional neural network, to projection images as a pre-denoising method, and then compare with DIP post-denoising.

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Purpose: In this paper, we describe an algebraic reconstruction algorithm with a total variation regularization (ART + TV) based on the Superimposed Wavefront Imaging of Diffraction-enhanced X-rays (SWIDeX) method to effectively reduce the number of projections required for differential phase-contrast CT reconstruction.

Methods: SWIDeX is a technique that uses a Laue-case Si analyzer with closely spaced scintillator to generate second derivative phase-contrast images with high contrast of a subject. When the projections obtained by this technique are reconstructed, a Laplacian phase-contrast tomographic image with higher sparsity than the original physical distribution of the subject can be obtained.

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Background: This study assessed the association of pathological kidney lesions with cardiovascular events in biopsy-proven diabetic kidney disease (DKD) with type 2 diabetes.

Methods: This multicenter, retrospective study involved 244 patients with no previous cardiovascular events before biopsy, estimated glomerular filtration rate (eGFR) ≥ 30 mL/min/1.73 m at biopsy (baseline), and ≥ 1 year of observation after biopsy.

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Aim: Recently, substantial studies have been accumulated to indicate the important role of gut microbiota in diabetic kidney disease (DKD). The abnormal change of bacterial-derived products could imply specific injuries or play beneficial or harmful roles in DKD progression. In this study, we examined the presence and contribution of the Klebsiella oxytoca gene in the circulation of patients with DKD.

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Introduction: Peritoneal equilibration test (PET) has been used to monitor peritoneal function. A more convenient marker would be useful in clinical situations including home medical care. Autotaxin is known to leak into the interstitium as vascular permeability increases during the progression of tissue fibrosis.

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Block copolymers are recognized as a valuable platform for creating nanostructured materials. Morphologies formed by block copolymer self-assembly can be transferred into a wide range of inorganic materials, enabling applications including energy storage and metamaterials. However, imaging of the underlying, often complex, nanostructures in large volumes has remained a challenge, limiting progress in materials development.

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Article Synopsis
  • The CheckMate 274 trial found that adjuvant nivolumab is more effective than placebo in treating high-risk urothelial carcinoma (UC) after surgery, but real-world data from Japan on its safety and efficacy were lacking.
  • In this retrospective study, 33 patients who received adjuvant nivolumab following surgery were evaluated, revealing some immune-related adverse events (irAEs), with 3 patients experiencing severe reactions and 8 needing to discontinue treatment due to side effects.
  • The study reported a 1-year overall survival rate of 100%, with a disease-free survival rate of 70%, although careful patient selection is crucial for this postoperative therapy.
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Background/aim: To examine the specific time frame and identify associated risk factors from commencement of hormonal therapy to the onset of castration-resistant prostate cancer among patients who have developed biochemical recurrence following radical prostatectomy.

Patients And Methods: We retrospectively reviewed the records of 92 patients who developed biochemical recurrence and received hormonal therapy as initial salvage treatment after radical prostatectomy for high-risk localized prostate cancer from 2005 to 2021. The castration-resistant prostate cancer-free survival rates from the commencement of salvage hormonal therapy were analyzed using log-rank methods.

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  • Hyperglycemia and hypertension are known risk factors for kidney glomerular injury in type 2 diabetes, but factors for kidney tubular injury are less understood.
  • In a study of 1243 subjects, researchers identified four groups based on urinary biomarkers and found different risk factors for glomerular and tubular injuries.
  • Key findings indicate that while hypertension contributes to glomerular injury, the Fibrosis-4 index is specifically linked to tubular injury, suggesting liver fibrosis is a concern for tubular health in these patients.
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We conducted a retrospective evaluation of the clinical outcomes and prognostic factors in patients with nonmetastatic castration-resistant prostate cancer (nmCRPC) treated with first-line androgen receptor signaling inhibitors (ARSI) in real-world clinical practice in Japan. Between 2012 and 2023, a total of 127 consecutive patients with nmCRPC received ARSI treatment. Overall survival (OS), metastatic-free survival (MFS), and prostate-specific antigen-progression-free survival (PSA-PFS) from ARSI initiation were assessed using the Kaplan-Meier methodology.

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Article Synopsis
  • Phase-contrast computed tomography (CT) using synchrotron-generated x-rays allows for high-contrast, 3D imaging of soft tissues, but traditional methods suffer from spatial resolution issues due to the required distance between the specimen and the x-ray camera.
  • The new technique, Superimposed Wavefront Imaging of Diffraction-enhanced x-rays (SWIDeX), uses a unique setup to eliminate this distance, resulting in superior spatial resolution compared to conventional methods.
  • The effectiveness of SWIDeX was demonstrated by visualizing internal structures of various human tissues, which showed clearer 3D images when compared to traditional pathological techniques.
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Background: d-alanine administration prevented kidney damage in a murine acute kidney injury model. Further data are needed on the influence of d-alanine on kidney function in humans.

Objective: This study investigated the effects of d-alanine intake on amino acid metabolism and kidney function in healthy volunteers.

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Topological defects-extended lattice deformations that are robust against local defects and annealing-have been exploited to engineer novel properties in both hard and soft materials. Yet, their formation kinetics and nanoscale three-dimensional structure are poorly understood, impeding their benefits for nanofabrication. We describe the fabrication of a pair of topological defects in the volume of a single-diamond network (space group Fd m) templated into gold from a triblock terpolymer crystal.

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Background: Lymphocytes are closely linked to mechanisms of action of immuno-oncology (IO) agents. We aimed to assess the prognostic significance of absolute lymphocyte count (ALC) in patients with metastatic renal cell carcinoma (mRCC).

Patients And Methods: Using the International mRCC Database Consortium (IMDC), patients receiving first-line IO-based combination therapy were analysed.

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Purpose: This study evaluated the dysregulation of TCF4 isoforms and differential exon usage (DEU) in corneal endothelial cells (CECs) of Fuchs endothelial corneal dystrophy (FECD) with or without trinucleotide repeat (TNR) expansion in the intron region of the TCF4 gene.

Methods: Three RNA-Seq datasets of CECs (our own and two other previously published datasets) derived from non-FECD control and FECD subjects were analyzed to identify TCF4 isoforms and DEU events dysregulated in FECD by comparing control subjects to those with FECD with TNR expansion and FECD without TNR expansion.

Results: Our RNA-Seq data demonstrated upregulation of three TCF4 isoforms and downregulation of two isoforms in FECD without TNR expansion compared to the controls.

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Introduction: Systemic and local therapies for patients with metastatic renal cell carcinoma (mRCC) are often challenging despite the evolution of multimodal cancer therapies in the last decade. In this review, we will focus on recent multidisciplinary approaches for patients with mRCC.

Areas Covered: Systemic therapies for patients with mRCC have been garnering attention particularly after the approval of immuno-oncology (IO) agents, including anti-programmed death 1/programmed death-ligand 1.

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Article Synopsis
  • This study investigates how pre-existing anti-PEG antibodies affect the immune response to the anti-SARS-CoV-2 mRNA vaccine in patients with hematological and autoimmune diseases.
  • Findings indicate that antibody levels were generally higher in autoimmune patients, but baseline anti-PEG antibodies did not correlate with anti-SARS-CoV-2 antibodies in hematological patients.
  • The research concludes that while age and treatment with anti-CD20 negatively affected antibody response in hematological patients, higher anti-PEG antibody levels were linked to better SARS-CoV-2 antibody responses in autoimmune patients.
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A 78-year-old man with atherosclerosis was diagnosed with hepatocellular carcinoma by transfemoral angiography of the celiac and superior mesenteric arteries (SMA). After surgery, a serum examination revealed progressive renal failure with eosinophilia, leading to end-stage kidney disease, in addition to active gastric ulcers and pancreatitis. Cyanosis in the bilateral toes showed a cholesterol crystal embolism (CCE) in a skin biopsy.

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We proposed a new deep learning (DL) model for accurate scatter correction in digital radiography. The proposed network featured a pixel-wise water equivalent path length (WEPL) map of subjects with diverse sizes and 3D inner structures. The proposed U-Net model comprises two concatenated modules: one for generating a WEPL map and the other for predicting scatter using the WEPL map as auxiliary information.

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Since diabetes and its complications have been thought to exaggerate cardiorenal disease, resulting in a short lifespan, we investigated causes of death and lifespans in individuals with and without diabetes at a Japanese community general hospital during the period from 2011 to 2020. Causes of death and age of death in individuals with and those without diabetes were compared, and associations between medications used and age of death were statistically analyzed. A total of 2326 deaths were recorded during the 10-year period.

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Patients with brain metastases (BrM) from renal cell carcinoma and their outcomes are not well characterized owing to frequent exclusion of this population from clinical trials. We analyzed data for patients with or without BrM using the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC). A total of 389/4799 patients (8.

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