Publications by authors named "Komatsu H"

Background: Several clinical trials showed that sodium-glucose cotransporter 2 (SGLT2) inhibitors have protective effects against chronic kidney disease (CKD) in both patients with and those without type 2 diabetes mellitus. Since one of the renoprotective mechanisms of SGLT2 inhibitors is thought to be amelioration of glomerular hyperfiltration, we hypothesized that an enlarged glomerular diameter, which suggests increased single-nephron glomerular filtration rate, is associated with a reduction in urinary protein after treatment with an SGLT2 inhibitor.

Methods: This study was a retrospective multicentered study including 28 adult patients with CKD who underwent kidney biopsy and were then treated with dapagliflozin, an SGLT2 inhibitor.

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Introduction: Autistic symptoms in schizophrenia are reportedly associated with cognitive and social functions. However, few studies have investigated the association between autistic symptoms and clinical features in individuals with a clinical high risk for psychosis (CHR-P) and first-episode psychosis (FEP). We aimed to determine the association between autistic symptoms and clinical features in a cohort of individuals with CHR-P or FEP.

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The involvement of drug-metabolizing enzymes and transporters in plasma clozapine (CLZ) dynamics has not been well examined in Japanese patients with treatment-resistant schizophrenia (TRS). Therefore, this clinical study investigated the relationship between single nucleotide polymorphisms (SNPs) of various pharmacokinetic factors (drug-metabolizing enzymes and transporters) and dynamic changes in CLZ. Additionally, we aimed to determine whether CLZ acts as a substrate for pharmacokinetic factors using in vitro assays and molecular docking calculations.

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Background And Hypothesis: Eosinophilia has not been highlighted in clozapine-induced adverse inflammatory events, as it is often asymptomatic and self-limiting, while drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome occurs rarely. This study aimed to reveal the temporal relationships between eosinophilia and other inflammatory events during clozapine initiation.

Study Design: The temporal relationships between eosinophilia and other inflammatory events were evaluated among 241 patients with schizophrenia treated with clozapine for the first time at 7 hospitals.

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Article Synopsis
  • Two new crab species from the family Pilumnidae, Actumnus ngankeeae and Pilumnus swajayai, have been discovered in Japan.
  • Actumnus ngankeeae, found in the Ogasawara Islands, features a distinctively convex carapace with granules, and its claws are stout and curved.
  • Pilumnus swajayai, from the Ryukyu Islands, has a unique covered carapace with sharp anterolateral teeth and is noted to be only the second record of this species since its initial identification in Indonesia.*
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Background: Discrepancies existed between the medical knowledge sections of the Model Core Curriculum for Medical Education (MCC) and the Guidelines for the National Examination for Medical Practitioners (GNEMP) in Japan. These discrepancies have been one of the underlying factors hindering the development of learner-centered medical education in the country. The project team responsible for the 'Problem-Solving' section of the MCC aimed to address discrepancies between the disease lists in the MCC and the GNEMP.

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Background: The ulcerative colitis intestinal ultrasound (UC-IUS) index (UII) has been reported as a sonographic scoring system correlating with the Mayo endoscopic subscore (MES). Endoscopic improvement (EI) of UC (MES ≤ 1) is a crucial therapeutic target in clinical practice. However, the cutoff value for estimating EI using the UII has not been established.

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Physical reservoir computing (PRC) using synaptic devices has attracted attention as a promising edge artificial intelligence device. To handle time-series data on various time scales, it is necessary to fabricate devices with the desired time scale. In this study, we fabricated a dye-sensitized solar-cell-based synaptic device with controllable time constants by changing the light intensity.

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Backgroud Aims: Regenerative therapies employing cell therapy products (CTPs) have attracted considerable attention. Biodistribution (BD) evaluation of CTPs is mainly performed to clarify the cell survival time, engraftment, and distribution site. This evaluation is crucial for predicting the efficacy and safety profiles of clinical studies based on non-clinical BD study outcomes.

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  • Malignant mesothelioma (MM), linked to asbestos exposure, is increasingly prevalent and resistant to treatment, making the study of its underlying mechanisms crucial.
  • Researchers found that the platelet-derived growth factor receptor (PDGFR) ligand, PDGF-BB, boosts CTGF protein levels in MM cells without changing CTGF mRNA levels, indicating a unique regulation mechanism.
  • PDGFR activation triggers the AKT pathway, which is vital for increasing CTGF protein expression, suggesting that targeting these pathways could be key in addressing MM malignancy.
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Background: The majority of the patients with a solitary fibrous tumor (SFT) of the pleura are asymptomatic, and rupture of an SFT with hemothorax is rare.

Case Presentation: A 48-year-old man was taken by ambulance to our hospital because of sudden onset of left chest pain. Two months before the referral, a tumor was detected in the left upper lobe of the lung by screening computed tomography at another hospital, and further observation was recommended, because the tumor was suspected to be benign.

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Background: Precise skin phenotypic data are indispensable in accurately diagnosing atopic dermatitis (AD). Therefore, this study examined the interobserver concordance for AD and non-AD diagnoses between two dermatologists. AD prevalence determined by the self-reported physician diagnoses and the diagnoses determined from the United Kingdom (UK) diagnostic criteria were compared with the diagnoses made by the two dermatologists, using data from a skin health survey.

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Elevation of early-stage gastrointestinal cancer using submucosal injection materials (SIMs) and postoperative wound care with adhesive materials are crucial for preventing complications arising from endoscopic submucosal dissection (ESD). Several types of SIMs have been developed; however, they often provide insufficient tissue elevation and fail to adequately adhere to the defect following the removal of early-stage gastrointestinal cancer. In this study, we present the development of injectable Cat-PBA-ApGltn hydrogels, which are based on catechol group-modified Alaska pollock gelatin (Cat-ApGltn) and phenylboronic acid-modified Alaska pollock gelatin (PBA-ApGltn), serving as multifunctional SIMs.

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  • A study examined the effectiveness of avelumab and pembrolizumab, treatments for metastatic urothelial carcinoma post-chemotherapy, focusing on factors predicting patient outcomes.
  • The research included 243 patients, analyzing characteristics and blood data to identify independent prognostic factors like performance status and specific blood markers.
  • Findings indicate a new risk score utilizing platelet-to-lymphocyte ratio and lactate dehydrogenase levels could effectively predict overall survival after starting immune checkpoint inhibitors, outperforming existing models.
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Electrocatalysts which can operate for several years are required to produce hydrogen and commodity chemicals in an environmentally friendly manner. However, designing materials with long operational lifetimes is challenging, due to the lack of a conceptual framework to predict catalytic lifetimes quantitatively. Here, we report a microkinetic equation which quantifies the lifetime of an electrocatalyst undergoing dissolution.

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A 21-year-old man was diagnosed with myeloid/natural killer precursor leukemia (MNKPL) with bone marrow infiltration of blasts of cyCD3, CD7, CD33, CD34, CD56, HLA-DR, cyMPO, and TdT immunophenotypes. Although hyper-CVAD therapy was unsuccessful, induction treatment with idarubicin and cytarabine resulted in complete remission (CR). The patient subsequently underwent cord blood transplantation with a myeloablative conditioning regimen, which resulted in durable CR and complete donor chimerism.

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During the COVID-19 pandemic period, many patients who required outpatient chemotherapy developed COVID-19, requiring chemotherapy interruption. However, there are no clear guidelines regarding the safe timing for restarting chemotherapy. We conducted a retrospective study to assess when such patients can safely recommence chemotherapy.

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Background And Aims: Predicting the efficacy of molecular-targeted drugs (MTDs) is an unmet need in the treatment of ulcerative colitis (UC). Intestinal ultrasound (IUS) can be used to safely and repeatedly assess UC activity.

Methods: Thirty-eight patients who started MTD therapy for active UC and underwent IUS at baseline and 3 months after starting therapy were analyzed.

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  • A study examined the effectiveness of avelumab maintenance therapy compared to pembrolizumab in patients with metastatic and unresectable urothelial carcinoma after 4 cycles of chemotherapy without disease progression.
  • Data from 243 patients treated between January 2017 and December 2022 was analyzed, with a focus on oncological outcomes and adverse events using a method called propensity score matching.
  • The findings indicated that both avelumab and pembrolizumab had similar progression-free survival rates, but avelumab required a lower rate of high-dose glucocorticoid treatment.
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  • Islet transplantation is a promising treatment for type 1 diabetes, but its success relies on rapid evaluation of islet health, as they can degrade quickly post-isolation.
  • The study tested a new method called single-cell Western blotting (scWestern) for quickly assessing protein markers in islet cells, comparing it with traditional methods.
  • The findings showed that while alpha and beta cell compositions aligned well between both methods, delta cells did not, and scWestern revealed the presence of rare double-hormonal cells in islets, which could provide valuable insights for improving transplantation outcomes.
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Purpose: MicroRNAs (miRNAs) are non-coding RNAs which have attracted attention as biomarkers in a variety of diseases. However, extensive unbiased analysis of miRNA in vitreous humor of sarcoidosis patients has not been reported. In the present study, we comprehensively analyzed the dysregulated miRNAs in ocular sarcoidosis to search for potential biomarkers.

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Uncontrollable hemorrhage from trauma and open surgery leads to a high percentage of death. Even though some patch-type hemostatic materials have been used in the clinic, sufficient tissue adhesion property and the management of tissue adhesion and anti-adhesion have been the challenges. In this report, we designed Janus tissue adhesive hemostatic patch, consisting of Alaska pollock gelatin (Org-ApGltn) as a support layer and decanoyl group-modified ApGltn (C10-ApGltn) with pentaerythritol poly(ethylene glycol) ether tetrasuccinimidyl glutarate (4S-PEG) as an adhesive layer, named as the C10-ApGltn patch.

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Article Synopsis
  • - This study focuses on the impact of dysphagia (difficulty swallowing) in patients with advanced esophageal cancer, particularly those who are eligible for surgery after preoperative treatment.
  • - Researchers analyzed data from 302 patients and found that higher dysphagia scores were linked to worse tumor characteristics, lower body mass index, and poorer overall survival rates.
  • - The results indicate that dysphagia scores can serve as an independent prognostic factor for overall survival post-surgery, with higher scores correlating to increased recurrence rates and lower survival outcomes.
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