Publications by authors named "Ueno M"

Article Synopsis
  • The SCRUM-Japan GI-SCREEN program uses next-generation sequencing (NGS) to profile genomic data for patients with advanced gastrointestinal cancers, aiming to facilitate enrollment in targeted clinical trials and enhance real-world data collection.
  • The study involved 5,743 patients, revealing that those enrolled in matched trials after starting their first-line treatment experienced longer overall survival compared to those who enrolled before treatment, indicating possible immortal time bias.
  • Results showed significant improvements in survival rates for colorectal cancer patients receiving targeted therapies based on genomic alterations, highlighting the importance of genetic profiling in clinical trial participation.
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Skeletal muscle stem cells (MuSCs) have been proposed as suitable candidates for cell therapy to muscular disorders since they exhibit a good capacity for myogenic regeneration. However, for better therapeutic outcomes, it is necessary to isolate human MuSCs from a suitable tissue source that possess high myogenic differentiation. In this context, isolated CD56+CD82+ cells from extra eyelid tissues were tested in vitro myogenic differentiation potential.

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Background: Neoadjuvant chemotherapy (NAC) followed by surgery is the standard treatment for locally advanced esophageal squamous cell carcinoma (ESCC). Chemoradiotherapy (CRT) is an alternative treatment approach. However, both treatments are associated with toxicity, and the optimal treatment for older patients with ESCC is unknown.

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Background/aim: Pancreatic cancer has the highest risk of venous thromboembolism (VTE). Additionally, chemotherapy for cancer patients increases the risk of developing VTE. Due to recent advances in neoadjuvant chemotherapy (NAC) regimens, more patients with resectable pancreatic cancer will receive NAC.

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Background: Compared with normal cells, tumour cells contain elevated levels of reactive oxygen species (ROS). Increased levels of the antioxidant protein NAD(P)H:quinone oxidoreductase 1 (NQO1) and phosphorylated signal transducer and activator of transcription 3 (pSTAT3) correlate negatively with the survival of patients with pancreatic cancer. Napabucasin is an investigational, orally administered ROS generator bioactivated by NQO1.

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High efficacy and minimal toxicity radioprotectors are desirable options for the hazards posed by nuclear medical and energy technologies and the dangers presented by nuclear weapons in an unstable global situation. Although cysteamine is an effective radioprotector, it has considerable toxicity. In this study, the protective effects of the less toxic organosulfur compounds 2-aminoethylthiosulfate (AETS), thiotaurine (TTAU), and hypotaurine (HTAU) against X-ray damage in mice were compared with that of cysteamine.

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Article Synopsis
  • A study was conducted to examine how radiation-induced hydrogen peroxide (HO) affects the biological response to X-rays and carbon-ion beams, using a selenium-deficient (SeD) mouse model that can't break down HO.
  • The research found that SeD mice experienced higher lethality after exposure to radiation compared to normal mice, but there were no significant differences between the effects of X-rays and carbon-ion beams on SeD mice.
  • Additionally, SeD mice did not show significant variations in brain redox status post-irradiation, indicating that while SeD affected the biological impact of radiation slightly, it did not dramatically change outcomes like leg contracture or brain oxidation levels.
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Previous studies have reported on associations between immobility syndrome and the COVID-19 pandemic. However, little is known about the aggravation of this syndrome in older patients negative for COVID-19 infection amidst behavior restriction due to a clustered COVID-19 infection. Patients hospitalized one month before a clustered COVID-19 infection occurred in our hospital were recruited.

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Background: In this study, we propose a butterfly needle tap and suction (BTS) technique for recurrent chronic subdural hematoma (CSDH) as an alternative to reoperation with burr hole craniostomy (BHC) and investigate its efficacy and safety. The procedure involves percutaneous puncture through the burr hole created during the previous surgery and subsequent hematoma evacuation using a butterfly needle.

Methods: This retrospective study included patients who underwent BTS for CSDH at Ogaki Municipal Hospital between January 2017 and December 2020.

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Purpose: Corneal endothelial cell density (ECD) gradually decreases after corneal transplantation by unknown biologic, biophysical, or immunologic mechanism. Our purpose was to assess the association between donor corneal endothelial cell (CEC) maturity in culture and postoperative endothelial cell loss (ECL) after successful corneal transplantation.

Design: Prospective cohort study.

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The regulation of telomere length has a significant impact on cancer risk and aging in humans. Circular chromosomes are found in humans and are often unstable during mitosis, resulting in genome instability. Some types of cancer have a high frequency of a circular chromosome.

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Background: Fluorouracil, leucovorin (5FU/LV), and nanoliposomal-irinotecan (nal-IRI) combination therapy has been established as the second-line treatment for advanced pancreatic ductal adenocarcinoma. Oxaliplatin with 5FU/LV (FOLFOX) is often used as a subsequent treatment, although its efficacy and safety are yet to be fully elucidated. We aimed to evaluate the efficacy and safety of FOLFOX as a third- or later-line treatment for patients with advanced pancreatic ductal adenocarcinoma.

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Article Synopsis
  • Cerebrospinal fluid-contacting neurons (CSF-cNs) are sensory neurons found in the spinal cord that affect movement and posture, but their workings in mammals have been unclear until now.
  • Recent research on mice showed the ability to genetically target these neurons, revealing their extensive connections and structural features, including long axons that link them to motor neurons.
  • Inactivating CSF-cNs resulted in slower locomotion on a treadmill, indicating their crucial role in controlling spinal motor circuits for movement.
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Background: The worldwide spread of coronavirus disease 2019 (COVID-19) has led to an urgent need for nucleic acid amplification test (NAAT) for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Because NAAT has many manual processes, results may vary depending on the operator. Therefore, it has been required to develop a fully automated testing device and reagent that detects genetic material from SARS-CoV-2.

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Article Synopsis
  • Liquid biopsy is a promising method for tumor genotyping in pancreatic ductal adenocarcinoma (PDAC), which often sheds low levels of circulating-tumor DNA (ctDNA).
  • A study of 512 PDAC patients found that 57% had KRAS mutations, with higher detection rates in those with liver metastasis (78%) compared to other sites.
  • The research suggests that ctDNA analysis can be particularly useful for assessing PDAC cases with liver metastases due to higher mutation prevalence and variant allele frequency.
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Introduction: Circulating tumor DNA (ctDNA) has been increasingly recognized as a promising minimally-invasive biomarker that could identify patients with minimal residual disease and a high risk of recurrence after definitive treatment. In this study, we've compared the clinical utility and sensitivity of 2 different approaches to ctDNA analyses: tumor-informed and tumor-agnostic in the management of colorectal (CRC) patients. The clinical benefits of a single timepoint ctDNA analysis compared to serial ctDNA monitoring after definitive treatment were also evaluated to uncover the ideal surveillance protocol.

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The architecture and nuclear location of chromosomes affect chromatin events. Rif1, a crucial regulator of replication timing, recognizes G-quadruplex and inhibits origin firing over the 50-100-kb segment in fission yeast, , leading us to postulate that Rif1 may generate chromatin higher order structures inhibitory for initiation. However, the effects of Rif1 on chromatin localization in nuclei have not been known.

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Background: The histological features and radiological shape of extrahepatic cholangiocarcinoma (eCCA) have not been widely studied in relation to prognosis. Multi-detector computed tomography (MDCT) is thought to be useful in diagnosis of progress and tumor distribution; it can also show morphological differences (round, triangular, and square forms) at the tumoral obstruction sites. Histological types of eCCA may be revealed, with potential association with tumor growth and survival.

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A 57-year-old man was diagnosed with a tumor in the pancreatic body at a nearby hospital and consulted our hospital. Examinations revealed that carbohydrate antigen 19-9(CA19-9)levels were 1,765.0 U/mL.

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Article Synopsis
  • Germline mutations in the SAMD9 and SAMD9L genes have been linked to monosomy 7 in children.
  • Two infants with these mutations showed serious health issues, including anemia and thrombocytopenia in one, and neutropenia with brain complications in the other.
  • Both infants underwent cord blood transplantation but faced severe complications like engraftment syndrome and life-threatening graft-versus-host disease, along with loss of chromosome 7 in their bone marrow cells.
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Nuclear protein 1 (NUPR1) is a stress-induced protein activated by various stresses, such as inflammation and oxidative stress. We previously reported that Nupr1 deficiency increased bone volume by enhancing bone formation in 11-week-old mice. Analysis of differentially expressed genes between wild-type (WT) and Nupr1-knockout (Nupr1-KO) osteocytes revealed that high temperature requirement A 1 (HTRA1), a serine protease implicated in osteogenesis and transforming growth factor-β signaling was markedly downregulated in Nupr1-KO osteocytes.

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We previously reported the neuroprotective potential of combined hydrogen (H) gas ventilation therapy and therapeutic hypothermia (TH) by assessing the short-term neurological outcomes and histological findings of 5-day neonatal hypoxic-ischemic (HI) encephalopathy piglets. However, the effects of H gas on cerebral circulation and oxygen metabolism and on prognosis were unknown. Here, we used near-infrared time-resolved spectroscopy to compare combined H gas ventilation and TH with TH alone.

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Background/aim: The standard treatment for resectable pancreatic cancer is preoperative adjuvant chemotherapy (NAC) + curative surgery + adjuvant chemotherapy. Although excellent local control results of carbon ion radiotherapy (CIRT) for pancreatic cancer have been reported, no reports have compared CIRT with the standard treatment for resectable pancreatic cancer. In this study, we compared the results of CIRT for resectable pancreatic cancer with those of standard therapy and investigated the usefulness of CIRT.

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Background: Alpha-fetoprotein (AFP)-producing gastric cancer (AFPGC) is reported to have biologically aggressive features and poor prognosis. A relatively large number of patients with AFPGC have achieved a long-term prognosis after surgery in our institution. This study aimed to clarify the clinical features of and re-evaluate the long-term outcomes of AFPGC.

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