Publications by authors named "Yasumoto K"

Objectives: The purpose of the present study was to investigate the differential impact of disease activity and severity on functional status and patient satisfaction in rheumatoid arthritis (RA) using cluster analysis on data from the FRANK registry.

Methods: Data from 3,619 RA patients in the FRANK registry were analysed. Patients were grouped using hierarchical and k-means cluster analyses based on age, physician's global assessment (PhGA), patient's pain assessment (PtPA), and Steinbrocker stage.

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Nitrogen's impact on corals has been widely studied, but the role of phosphate is often overlooked due to its low concentrations in seawater. Previous studies have suggested that phosphate can penetrate intercellular spaces to reach the extracellular calcifying medium (ECM), where it adsorbs onto skeletal surfaces and disrupts calcium carbonate crystallization, thereby inhibiting skeletal growth. Based on this mechanism, we hypothesized that skeletal growth inhibition depends not only on phosphate concentration but also on total phosphate load (flow volume × concentration).

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It is unclear whether the impact of prereperfusion unloading on improving survival is sustained throughout all periods from the onset in patients with ST-segment elevation myocardial infarction. This study is a post hoc analysis of the Japanese registry for Pectaneous Ventricular Assist Device (J-PVAD) registry. In all patients registered in J-PVAD between February 2020 and December 2021, patients with ST-segment elevation myocardial infarction complicated with cardiogenic shock and treated with Impella support alone were selected.

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This study aims to elucidate a novel mechanism for elevating the pH within the calicoblastic extracellular calcifying medium (pH) of corals and demonstrate the potential contribution of calcifying organisms to CO sequestration. Departing from traditional models that attribute the increase in pH primarily to H expulsion via Ca-ATPase, we emphasize the significant role of polyamines. These ubiquitous biogenic amines conveyed by calicoblastic cells through polyamine transporters demonstrate a remarkable affinity for CO.

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Background: The purpose of this study was to investigate the effect of the main fragment fracture type (oblique or transverse) on the union rate of femoral shaft fractures.

Methods: Patients who underwent surgical treatment with an antegrade intramedullary nail for femoral shaft fracture (Arbeitsgemeinschaft für Osteosynthesefragen / Orthopaedic Trauma Association; AO/OTA type 32 type B or C) between January 2009 and March 2021 were included in this study. Patients with oblique fractures of the two main fragments on radiographs immediately after surgery were classified into the oblique fracture group.

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Background: Little has been reported on the predictors of late recurrence (LR) after second radiofrequency catheter ablation (RFCA) for persistent atrial fibrillation (AF).

Objective: This study aimed to identify the predictors of LR after second RFCA in patients with persistent AF.

Methods: We retrospectively analyzed 123 patients who underwent a second RFCA because of LR after the initial RFCA for persistent AF.

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Article Synopsis
  • The study compared two groups of atrial fibrillation patients undergoing ablation: one with AI-guided pulmonary vein isolation (PVI) and the other with added very high-power short-duration (vHPSD) ablation near the esophagus.
  • No significant myocardial injury or inflammatory differences were found between the two groups, but the AI+vHPSD group required less application time and energy, with fewer instances of esophagus temperatures reaching critical levels.
  • However, the AI+vHPSD group had a higher incidence of pulmonary vein reconnections near the esophagus, indicating that while this method is energy-efficient and safe, it may carry a risk for more reconnections.
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  • Heart failure with preserved ejection fraction (HFpEF) and atrial fibrillation (AF) are associated with serious health risks, but maintaining sinus rhythm (SR) post-catheter ablation (CA) has shown benefits over standard medical treatment.
  • A study of 244 AF patients with HFpEF compared outcomes between those maintaining SR after their first CA and those after a repeat CA, finding similar rates of adverse health events over three years.
  • The results indicate that maintaining SR after a repeat CA does not offer additional benefits compared to maintaining SR after the initial CA, suggesting both approaches are equally effective in managing these patients.
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Polyamines are involved in various functions related to the cellular-level responses. To assess effects of polyamines on marine organisms, rearing experiments and comprehensive gene expression analyses were conducted on Acropora digitifera and Acropora sp.1, representative reef-building corals along the west-central coast of Okinawa, Japan, to evaluate effects of putrescine.

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  • The study investigates the impact of P-wave morphology (specifically duration and vector magnitude) on health outcomes in patients with acute anterior myocardial infarction (MI) caused by blockage in the left anterior descending artery.
  • Researchers enrolled 426 patients and found a significant cut-off value for predicting complications like heart failure hospitalization and death, using specific P-wave measurements.
  • Results showed that patients with high P-wave duration/vector magnitude had a greater risk of adverse outcomes, while age and performance of the heart also played critical roles in predicting these outcomes.
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Background: The study aim was to elucidate the effect of the 2024 Noto Peninsula earthquake on outpatient chemotherapy treatment of cancer survivors at Kanazawa Medical University Hospital (KMUH), Japan.

Methods: Medical and nursing records for January 4-31, 2024, from KMUH were retrospectively collected, and data for 286 participants were analyzed.

Results: Of the 286 participants, 95.

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Background: Tachycardia-induced cardiomyopathy (TIC) is a reversible cardiomyopathy with ventricular dysfunction caused by tachyarrhythmias. Notably, atrial fibrillation (AF) is the most common causal arrhythmia leading to TIC. However, the risk factors for the development of TIC due to AF remain unclear.

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  • The study analyzed the effects of coronary angioscopy (CAS) findings after the implantation of two types of stents: a polymer-free biolimus A9-coated stent (PF-BCS) and a durable polymer everolimus-eluting stent (DP-EES) in 99 patients, with evaluations done at 1 and 12 months post-implantation.
  • Results showed a decrease in thrombi and yellow plaque from 1 month to 12 months, with no new thrombi but some new yellow plaque observed in patients with DP-EES.
  • Key factors affecting thrombi development included management of diabetes, stent area, and stent coverage, highlighting that polymer
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Aims: Catheter ablation (CA) of atrial fibrillation (AF) improves left ventricular ejection fraction (LVEF) in patients with heart failure with reduced ejection fraction (HFrEF). The impact of ST-segment depression before CA on LVEF recovery and clinical outcomes remains unknown. In the present study, we aimed to investigate the relationship between ST-segment depression during AF rhythm before CA and improvement in the LVEF and clinical outcomes in persistent atrial fibrillation (PerAF) patients with HFrEF.

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To provide diverse in-home services like elderly care, versatile activity recognition technology is essential. Radio-based methods, including WiFi CSI, RFID, and backscatter communication, are preferred due to their minimal privacy intrusion, reduced physical burden, and low maintenance costs. However, these methods face challenges, including environmental dependence, proximity limitations between the device and the user, and untested accuracy amidst various radio obstacles such as furniture, appliances, walls, and other radio waves.

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  • A 44-year-old male experienced symptomatic supraventricular tachycardia (SVT) with a wide QRS complex and underwent an electrophysiological study to diagnose the condition.
  • The SVT was identified as antidromic atrioventricular reentrant tachycardia (AVRT) involving an accessory pathway, with a noticeable change in QRS morphology during the episode before it resolved spontaneously.
  • Successful mapping and radiofrequency treatment eliminated the accessory pathway, making the tachycardia episodes unable to occur again, marking a unique case in clinical findings.
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Background: It has not been fully elucidated which patients with persistent atrial fibrillation (PerAF) should undergo substrate ablation plus pulmonary vein isolation (PVI). This study aimed to identify PerAF patients who required substrate ablation using intraprocedural assessment of the baseline rhythm and the origin of atrial fibrillation (AF) triggers.

Methods and results: This was a post hoc subanalysis using extended data of the EARNEST-PVI trial, a prospective multicenter randomized trial comparing PVI-alone and PVI-plus (i.

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  • The study looked at what causes some people with ankylosing spondylitis (AS) to have serious back fractures that need surgery.
  • They checked 60 patients and found that most were middle-aged men who had AS for a long time.
  • Higher levels of a certain protein (CRP) in the blood were linked to a greater chance of needing surgery for back fractures, suggesting that treating inflammation could help prevent these fractures.
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The coordinated interspecific variation in leaf traits and leaf lifespan is known as the leaf economic spectrum (LES). The limitation of CO diffusion to chloroplasts within the lamina is significant in C photosynthesis, resulting in a shortage of CO for Rubisco. Although Rubisco CO/O specificity (S) should be adaptively adjusted in response to the interspecific variation in CO concentrations [CO] associated with Rubisco, S variations across species along the LES remain unknown.

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Drug-eluting stents have significantly contributed to reducing mortality in patients with ST-segment elevation myocardial infarctions (STEMIs), but slow-flow/no-reflow phenomenon (SFNR) and in-stent restenosis are still clinical problems. In contrast, perfusion balloons (PBs) can compress thrombi and ruptured plaque for long inflation without ischemia and can be used as a delivery device for infusion of nitroprusside to distal risk area during ballooning. We conducted a Reduction of risk bY perfUsion balloon for ST-segment Elevated myocardial Infarction (RYUSEI) study to evaluate whether PBs before stenting are more effective than conventional stenting for STEMIs.

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Background: Residual non-pulmonary vein (PV) foci are significantly associated with atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). However, we previously reported among patients with non-PV foci induced only once, none experienced AF recurrence. Thus, we aimed to investigate the correlation between the residual induction number of non-PV foci and ablation outcome in paroxysmal AF patients.

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Yolk-consuming (lecithotrophic) embryos of oviparous animals, such as those of fish, need to make do with the maternally derived yolk. However, in many cases, yolk possesses little carbohydrates and sugars, including glucose, the essential monosaccharide. Interestingly, increases in the glucose content were found in embryos of some teleost fishes; however, the origin of this glucose has been unknown.

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Article Synopsis
  • Pulmonary vein isolation (PVI) changes P-wave parameters in patients, but differences between radiofrequency catheter ablation (RFCA) and cryoballoon ablation (CBA) regarding P-wave vector magnitude (Pvm) are not fully understood.
  • * The study analyzed 426 patients, showing that ΔPvm (change in Pvm) was significantly larger in the CBA group compared to the RFCA group, indicating better outcomes with CBA.
  • * Additionally, lower ΔPvm values were linked to a higher risk of late arrhythmia recurrence in both RFCA and CBA groups, suggesting that monitoring ΔPvm could be crucial for patient prognosis.*
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