Publications by authors named "Yokota I"

Background And Purpose: Radiation-induced lymphopenia (RIL) may be associated with a worse prognosis in pancreatic cancer. This study aimed to develop a normal tissue complication probability (NTCP) model to predict severe RIL in patients with pancreatic cancer undergoing concurrent chemoradiotherapy (CCRT).

Materials And Methods: We reviewed pancreatic cancer patients treated at our facility for model training and internal validation.

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Background: In randomized clinical trials, multiple-testing procedures, composite endpoints, and prioritized outcome approaches are increasingly used to analyze multiple binary outcomes. Previous studies have shown that correlations between outcomes influence their sample size requirements. Although sample size is an important factor affecting the choice of statistical methods, the power and required sample sizes of methods for analyzing multiple binary outcomes have yet to be compared under the influence of outcome correlations.

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  • The study analyzed glycan biomarkers in serum to understand their relationship with chronic inflammatory demyelinating polyneuropathy (CIDP) and treatment effects.
  • Significant differences were found in N-glycan levels, particularly lower sialylated N-glycans in CIDP patients compared to healthy controls, while O-glycan levels remained unchanged.
  • Lower sialylated N-glycan levels may indicate therapeutic resistance and could serve as a potential biomarker for CIDP’s pathophysiology.
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Objectives: Sarcopenia and malnutrition often occur simultaneously in adults with cardiovascular diseases. Our objective was to determine the associations of preoperative sarcopenia and malnutrition with major adverse cardiac and cerebral events (MACCE) after cardiac surgery.

Methods: We retrospectively analysed 154 consecutive patients who underwent elective cardiac surgery between January 2015 and June 2018 at two institutions in Japan.

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Purpose: To investigate the change in serum albumin levels and hepatic reserve scores before and after portal vein stent placement (PVS) for post-surgical portal vein stenosis.

Material And Methods: A retrospective cohort of patients undergoing PVS after abdominal surgery between 2007 and 2021 was analyzed. Patients' age, sex, and PVS technical success (defined by portal vein patency at final portography) were evaluated.

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Diffuse hyperpigmentation is common in patients who undergo chemotherapy or stem cell transplantation (SCT). However, only a few studies have reported the relation between skin reactions and SCT-related complications. Serum 5-S-cysteinyldopa (5SCD), a pheomelanin precursor, is elevated in individuals with hyperpigmentation.

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  • * Edible bird's nest (EBN), which is swiftlet saliva consumed for health benefits, shows anti-avian viral properties, particularly by inhibiting the receptor-binding hemagglutinin (HA) activity after pancreatin treatment.
  • * EBN, rich in specific glycan structures, effectively enhances the action of antiviral drugs oseltamivir and zanamivir, suggesting its potential as a food-derived solution to combat avian viruses and reduce the risk of pandemics.
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L-carnitine is essential in lipid metabolism and reportedly has preventive effects for arrhythmia. Our objective was to examine the incidence of postoperative atrial fibrillation (POAF) and changes in serum biomarker levels following perioperative L-carnitine administration in patients with lung cancer. Thirteen patients undergoing a lobectomy with preoperative serum brain natriuretic peptide levels >24 pg/mL were perioperatively administered L-carnitine for 5 days (3 g/3×).

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  • The study investigates the effectiveness of durvalumab combined with chemoradiotherapy (CRT) versus CRT alone in treating locoregional recurrence of non-small-cell lung cancer (NSCLC) after complete resection.
  • Using propensity score analysis to adjust for confounding variables, the research involved 119 patients in the CRT-D group and 111 in the CRT group, noting differences in gender distribution and adenocarcinoma rates.
  • Results indicated that the median progression-free survival was significantly longer in the CRT-D group (25.4 months) compared to the CRT group (11.5 months), suggesting that the combination treatment could be a beneficial strategy for these patients.
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Background: Failure-free survival (FFS) rates of low-risk patients with rhabdomyosarcoma improved in Intergroup Rhabdomyosarcoma Study IV after the escalation of cyclophosphamide total dose to 26.4 g/m. However, this dose may increase the risk of adverse events, including infertility, in some patients.

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Background: The association between sensitization to specific aeroallergens and outcomes in patients with asthma is well researched; however, the association between childhood-onset wheeze/asthma and sensitization to various aeroallergens and food allergens in the general pediatric population remains poorly understood.

Objective: We sought to investigate the association between sensitization to common aeroallergens and food allergens with wheeze and type 2 (T2) inflammation in the general pediatric population.

Methods: Specific IgEs against 9 aeroallergens and 4 food allergens were measured in the prospective Hokkaido birth cohort of 428 school-age children (age ∼10 years).

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  • Traditional relapse prediction models for post-transplant patients don't adapt based on new information collected after the transplant, making them less effective for treatment adjustments.
  • This study focused on creating a dynamic relapse prediction model specifically for acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) patients after allogeneic hematopoietic cell transplantation (allo-HCT), utilizing WT1mRNA levels from blood tests.
  • The new model demonstrated significantly better predictive performance compared to older models, allowing for real-time predictions of relapse risk and is accessible through a user-friendly web application.
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  • Anti-HER2 therapies have improved outcomes for HER2-positive breast cancer, but some patients still don’t respond well; this research links the transcription factor SREBF2 to poor prognosis and higher ERBB2 expression in these cases.* -
  • Statins, which block the mevalonate pathway, can enhance the effectiveness of HER2-targeting treatments by inducing cell death and inhibiting critical signaling pathways (AKT and ERK) associated with tumor growth.* -
  • The study highlights the potential of using Rac1 expression as a biomarker to identify HER2-positive breast cancer patients who may benefit from combining HER2 therapies with statin treatment, paving the way for more tailored treatment approaches.*
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  • O-glycan analysis has been difficult due to complex procedures and challenges in cleaving O-glycans from proteins, particularly because they often have labile sialic acids that complicate mass spectrometry.
  • This study introduces a new method for directly and specifically derivatizing sialylated O-glycans, which stabilizes them and allows for the identification of different sialyl linkages while minimizing degradation during the cleavage process.
  • The new protocol, which involves aminolysis and evaporative β-elimination, simplifies the analysis of intact O-linked glycans, making it easier to extract and examine these complex structures.
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  • Graft-versus-host disease (GVHD) is a serious complication following allogeneic hematopoietic cell transplantation (HCT), impacting liver function, though the role of bile duct stem cells (BDSCs) in this process is not fully understood.
  • The study found that BDSCs initially expand and enhance liver organoid formation, but this ability declines as GVHD progresses, which correlates with a drop in biliary epithelial cells (BECs) and increased bilirubin levels.
  • Targeting TGF-β signaling with an inhibitor improved BDSC resilience and reduced biliary dysfunction, indicating that BDSCs could be key to developing treatments for hepatic GVHD.
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  • The study investigated the link between insulin resistance and factors related to obesity in individuals with type 2 diabetes mellitus (T2DM) and healthy controls using the short insulin tolerance test (SITT).
  • Results showed that patients with T2DM had significantly lower intravenous insulin tolerance test (KITT(iv)) values compared to controls, indicating higher insulin resistance.
  • KITT(iv) was correlated with various biomarkers, such as adiponectin and visceral fat area, and was associated with insulin dosage needed for glycemic control, while it did not correlate with the subcutaneous insulin tolerance test (KITT(sc)).
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Background The report of epidemiological data on coronavirus disease 2019 (COVID-19) patients treated using extracorporeal membrane oxygenation (ECMO) in Japan has been limited. Our study seeks to fill the existing gap in knowledge by providing an in-depth analysis of the clinical epidemiological characteristics and diverse medical outcomes of COVID-19 patients treated with ECMO in Japan. Methods This study used the COVID-19 Registry Japan nationwide database.

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Information regarding follow-up duration after treatment for newly diagnosed diffuse large B-cell lymphoma (DLBCL) is important. However, a clear endpoint has yet to be established. We enrolled a total of 2,182 patients newly diagnosed with DLBCL between 2008 and 2018.

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Echocardiography is a widely used modality for the assessment of right ventricular (RV) function; however, few studies have comprehensively compared the accuracy of echocardiographic parameters using invasively obtained reference values. Therefore, this exploratory study aimed to compare the accuracy of echocardiographic parameters of RV function and RV-pulmonary artery (PA) coupling. We calculated four indices of RV function (end-systolic elastance [Ees] for systolic function [contractility], for relaxation, and and end-diastolic elastance [Eed] for stiffness), and an index of RV-PA coupling (Ees/arterial elastance [Ea]), using pressure catheterization, cardiac magnetic resonance imaging, and a single-beat method.

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Due to the widespread use of cancer genetic testing in gastrointestinal cancer, the genetic mutation has been identified in biliary tract cancer as well as pancreatic cancer. Niraparib is a poly(ADP-ribose) polymerase (PARP) inhibitor, and PARP inhibitors exert their cytotoxicity against cancer cells in the context of homologous recombination deficiency, such as mutations, the mechanism of synthetic lethality. The aim of this phase II NIR-B trial is to evaluate the efficacy and safety of niraparib for patients with unresectable advanced or recurrent biliary tract cancer, pancreatic cancer or other gastrointestinal cancers with germline or somatic mutations revealed by genetic testing.

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Background: Autoimmune pulmonary alveolar proteinosis (APAP) is a diffuse lung disease that causes abnormal accumulation of lipoproteins in the alveoli; however, its pathogenesis remains unclear. Recently, APAP cases have been reported during the course of dermatomyositis. The combination of these two diseases may be coincidental; however, it may have been overlooked because differentiating APAP from a flare-up of interstitial pneumonia associated with dermatomyositis is challenging.

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  • This clinical trial aimed to assess the safety and effectiveness of a time-intensified treatment strategy for high-risk neuroblastoma, involving delayed local surgery following aggressive chemotherapy.
  • Seventy-five patients were enrolled, with a 3-year progression-free survival rate of 44.4% and an overall survival rate of 80.7%, indicating a significant response to therapy without any deaths during treatment.
  • However, there were high rates of adverse effects, with 48% experiencing severe complications and 25% facing major surgical issues, suggesting more research is needed to confirm findings and improve safety.
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  • The study aimed to determine the impact of primary tumor resection on survival rates in women with bone metastatic breast cancer, analyzing data from 2010 to 2016 and categorizing patients by hormone receptor (HR) and HER2 statuses.
  • A total of 13,450 female patients were included, revealing that survival rates varied by subtype, with triple-negative breast cancer patients having the lowest five-year overall survival rate of just 8.0%.
  • Resection of the primary tumor was found to improve survival across most subtypes but did not have a significant effect in the HR-/HER2+ group.
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