Publications by authors named "Kawamata H"

Maintaining functional independence and minimizing disability among older adults living in the community is paramount for mitigating rising care demands. Our study focused on shopping as a critical instrumental activity of daily living (ADL) to explore the association between shopping assistance and functional decline among older individuals receiving support through long-term care insurance (LTCI). This retrospective, cross-sectional study included 6202 participants aged >65 years living in a Japanese regional town receiving LTCI support, suggesting that they required assistance with local community life.

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Sarcoidosis has a heterogeneous clinical presentation and remains difficult to diagnose, especially in isolated cardiac sarcoidosis (CS). We report a case of life-threatening arrhythmia that led to the diagnosis of isolated CS. A 63-year-old man presented with sustained ventricular tachycardia that was thought to originate from the anterolateral free wall of the right ventricle.

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Ipsilateral pneumothorax is a common complication of pacemaker implantation due to transvenous lead placement. We report a case of bilateral pneumothorax after unilateral subclavian vein cannulation for pacemaker implantation. An 85-year-old woman underwent dual-chamber pacemaker implantation for symptomatic atrioventricular block.

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CHCHD10 is mutated in rare cases of FTD and ALS and aggregates in mouse models of disease. Here we show that the disordered N-terminal domain of CHCHD10 forms amyloid fibrils and report their cryoEM structure. Disease-associated mutations cannot be accommodated by the WT fibril structure, while sequence differences between CHCHD10 and CHCHD2 are tolerated, explaining the co-aggregation of the two proteins and linking CHCHD10 and CHCHD2 amyloid fibrils to neurodegeneration.

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Background And Aims: Mild cognitive impairment (MCI) is a widespread condition in older individuals, posing significant risk of dementia. However, limited research has been conducted to explore effective interventions and clarify their impact at the neural level. Therefore, this study aimed to investigate the effects of computerized cognitive training (CCT) and explore the associated neural mechanisms in preventing dementia in older individuals with MCI, with a view to inform future intervention efforts.

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Article Synopsis
  • This study evaluated the effectiveness of endovascular therapy (EVT) versus open surgical revascularization (OS) for acute superior mesenteric artery occlusion in 746 patients using data from a Japanese registry.
  • In-hospital mortality and bowel resection rates were similar between the two treatment groups, but the EVT group had a shorter hospital stay and lower costs.
  • Predictive factors for in-hospital mortality included advanced age and chronic kidney disease, while diabetes was linked to increased likelihood of bowel resection post-revascularization.
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Introduction: The pathogenesis of amyotrophic lateral sclerosis (ALS), a fatal neurodegenerative disease caused by the demise of motor neurons has been linked to excitotoxicity caused by excessive calcium influx via N-methyl-D-aspartate receptors (NMDARs), suggesting that uncompetitive NMDAR antagonism could be a strategy to attenuate motor neuron degeneration. REL-1017, the dextro-isomer of racemic methadone, is a low-affinity uncompetitive NMDAR antagonist. Importantly, in humans REL-1017 has shown excellent tolerability in clinical trials for major depression.

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Mutations in CHCHD10, a mitochondrial protein with undefined functions, are associated with autosomal dominant mitochondrial diseases. Chchd10 knock-in mice harboring a heterozygous S55L mutation (equivalent to human pathogenic S59L) develop a fatal mitochondrial cardiomyopathy caused by CHCHD10 aggregation and proteotoxic mitochondrial integrated stress response (mtISR). In mutant hearts, mtISR is accompanied by a metabolic rewiring characterized by increased reliance on glycolysis rather than fatty acid oxidation.

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The most prevalent genetic cause of both amyotrophic lateral sclerosis and frontotemporal dementia is a (GGGGCC) nucleotide repeat expansion (NRE) occurring in the first intron of the C9orf72 gene (C9). Brain glucose hypometabolism is consistently observed in C9-NRE carriers, even at pre-symptomatic stages, but its role in disease pathogenesis is unknown. Here, we show alterations in glucose metabolic pathways and ATP levels in the brains of asymptomatic C9-BAC mice.

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Immune checkpoint inhibitors (ICIs), including anti-programmed cell death 1 ligand 1 (PD-L1) antibodies, are significantly changing treatment strategies for human malignant diseases, including oral cancer. Cancer cells usually escape from the immune system and acquire proliferative capacity and invasive/metastatic potential. We have focused on the two immune checkpoints, PD-1/PD-L1 and CD47/SIRPα, in the tumor microenvironment of oral squamous cell carcinoma (OSCC), performed a retrospective analysis of the expression of seven immune-related factors (PD-L1, PD-1, CD4, CD8, CD47, CD56 and CD11c), and examined their correlation with clinicopathological status.

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Article Synopsis
  • Fibromuscular dysplasia (FMD) can lead to renovascular hypertension, particularly in young women who may not be adequately diagnosed.
  • A 20-year-old woman presented with high blood pressure and low potassium levels, ultimately diagnosed with branch artery FMD after imaging and tests showed significant renin secretion from the right kidney.
  • Following successful treatment with percutaneous transluminal angioplasty, she was cured of her hypertension and didn't need any medications, highlighting the importance of proper diagnosis and treatment in such cases.
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The most prevalent genetic cause of both amyotrophic lateral sclerosis and frontotemporal dementia is a (GGGGCC) nucleotide repeat expansion (NRE) occurring in the first intron of the gene (C9). Brain glucose hypometabolism is consistently observed in C9-NRE carriers, even at pre-symptomatic stages, although its potential role in disease pathogenesis is unknown. Here, we identified alterations in glucose metabolic pathways and ATP levels in the brain of asymptomatic C9-BAC mice.

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A medial condyle fracture of the humerus with preexisting fishtail deformity and lateral condyle nonunion is very rare, and there have been few reports describing favorable treatment options. We herein report the case of an 83-year-old woman who sustained a medial condyle fracture of her elbow with a comorbidity of long-lasting limited elbow motion with a history of elbow trauma in childhood. After conservative treatment with casting for four weeks, unstable medial condyle fracture in the presence of fishtail deformity and lateral condyle nonunion remained.

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Aims: The impact of hospital volume on clinical performance has been investigated by many researchers to date and thought that it is associated with quality of care and outcome for patients with heart failure (HF). This study sought to determine whether annual admissions of HF per cardiologist are associated with process of care, mortality, and readmission.

Methods And Results: Among the nationwide registry 'Japanese registry of all cardiac and vascular diseases - diagnostics procedure combination' data collected from 2012 to 2019, a total of 1 127 113 adult patients with HF and 1046 hospitals were included in the study.

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The main symptom in primary syphilis is a small, painless, sore or ulcer called a chancre on the penis, vagina, or around the anus, although chancres can sometimes appear in the mouth or on the lips, fingers, or buttocks. We present the case of a man in his early 60 s with a chief complaint of a painful tongue ulcer. An ulcerated, indurated, and hemorrhagic lesion (23 × 14 mm) was found on the ventral tongue surface, near the oral floor.

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Background: Thromboangiitis obliterans (TAO) can lead to the development of critical limb-threatening ischemia (CLTI). Despite conventional treatments, such as smoking cessation or revascularization, young patients (<50 years) still require limb amputation. Therapeutic angiogenesis using bone marrow-derived mononuclear cell (BM-MNC) implantation has been tested and shown to have reasonable efficacy in CLTI.

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Mutations in , a mitochondrial protein with undefined functions, are associated with autosomal dominant mitochondrial diseases. knock-in mice harboring a heterozygous S55L mutation (equivalent to human pathogenic S59L) develop a fatal mitochondrial cardiomyopathy caused by CHCHD10 aggregation and proteotoxic mitochondrial integrated stress response (mtISR). In mutant hearts, mtISR is accompanied by a metabolic rewiring characterized by increased reliance on glycolysis rather than fatty acid oxidation.

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Retained products of conception can cause massive bleeding that can be prevented by uterine artery embolization before resection; however, uterine artery balloon occlusion is less invasive. While scattered reports of its use for postpartum hemorrhage exist, no indications have been described. We report a case of hysteroscopic resection of retained products of conception using uterine artery balloon occlusion instead of uterine artery embolization.

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Mutations in p53 are common in human oral squamous cell carcinoma (OSCC). However, in previous analyses, only detection of mutant p53 protein using immunohistochemistry or mutations in some exons have been examined. Full length mutant p53 protein in many cases shows a loss of tumor suppressor function, but in some cases possibly shows a gain of oncogenic function.

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Article Synopsis
  • A study was conducted to evaluate the effectiveness and safety of nivolumab immunotherapy in patients with recurrent or metastatic oral squamous cell carcinoma.
  • The research involved 143 patients and found that nivolumab achieved a 27.3% overall response rate and a disease control rate of 46.2%.
  • Key factors influencing patient survival included performance status and the occurrence of immune-related side effects, with overall survival averaging about 11.2 months, indicating nivolumab is an effective and well-tolerated treatment option.
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Photodissociation dynamics of 1-chloro-2-iodo-1,1,2-trifluoroethane (CFClCHFI) were investigated at 267 nm by a slice imaging technique combined with an oriented molecular beam. The speed and angular distributions of the spin-orbit-selected I atoms were determined by analyzing the images. The anisotropic parameter was 1.

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  • Plastic accumulation in marine environments and its long-term trends remain unclear, with a focus on sediment measurement as key to understanding ocean plastics.
  • A 75-year study in Beppu Bay, Japan revealed a linear increase in microplastic fragments, particularly a surge around 1990 and 2014, with smaller fragments dominating accumulation rates.
  • The study found strong correlations between microplastic accumulation and chlorophyll-a levels, and estimated microplastics' mean sinking velocity at about 10 m/day, aiding future modeling of microplastic dynamics.
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Introduction: In early-stage oral tongue squamous cell carcinoma (OTSCC), elective neck dissection (END) is recommended when occult lymph node metastasis is suspected; however, there is no unanimous consensus on the risks and benefits of END in such cases. The management of clinically node-negative (cN0) OTSCC remains controversial. This study, therefore, aimed to evaluate the efficacy of END and its impact on the quality of life (QoL) of patients with cN0 OTSCC.

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Objective: ALS is a rapidly progressive, fatal disorder caused by motor neuron degeneration, for which there is a great unmet therapeutic need. AMX0035, a combination of sodium phenylbutyrate (PB) and taurursodiol (TUDCA, TURSO), has shown promising results in early ALS clinical trials, but its mechanisms of action remain to be elucidated. Therefore, our goal was to obtain an unbiased landscape of the molecular effects of AMX0035 in ALS patient-derived cells.

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Oral squamous cell carcinoma (OSCC) histopathologically accounts for ≥90% of oral cancer. Many clinicopathological risk factors for OSCC have also been proposed, and postoperative therapy is recommended in guidelines based on cancer stage and other risk factors. However, even if the standard treatment is provided according to the guidelines, a few cases rapidly recur or show cervical and distant metastasis.

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