Publications by authors named "Komuro K"

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  • A 59-year-old female with multiple myeloma developed symptoms of edema and dyspnea after starting treatment with carfilzomib, a cancer drug, which raised concerns about potential drug-related cardiac complications.
  • Diagnostic tests revealed signs of pre-capillary pulmonary hypertension (PH) and confirmed it through right heart catheterization, leading to the conclusion that carfilzomib was causing the condition.
  • After stopping the drug and starting pulmonary vasodilator therapy, the patient experienced symptom improvement and heart changes, suggesting the need for careful monitoring for PH in patients receiving carfilzomib.
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Background: In contrast to the well-known prognostic values of the cardiorenal linkage, it remains unclear whether impaired cognitive function affects cardiac prognosis in relation to cardiac sympathetic innervation and renal function in patients with heart failure (HF).

Methods And Results: A total of 433 consecutive HF patients with left ventricular ejection fraction (LVEF) <50% underwent the Mini-Mental State Examination (MMSE) and a neuropsychological test for screening of cognition impairment or subclinical dementia. Following metaiodobenzylguanidine (MIBG) scintigraphy, patient outcomes with a primary endpoint of lethal cardiac events (CEs) were evaluated for a mean period of 14.

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  • Individuals with diabetes have a higher risk of developing cardiovascular disease (CVD), and this study aimed to understand how modifiable risk factors relate to CVD based on diabetes status.
  • The analysis involved over 4 million individuals, revealing that while obesity, hypertension, and dyslipidemia had a weaker association with CVD in those with diabetes, risky behaviors like poor diet, smoking, and inactivity had a stronger impact.
  • The findings indicate that maintaining a healthy lifestyle is especially crucial for people with diabetes to reduce their risk of CVD, as lifestyle-related factors significantly increase their risk compared to those without diabetes.
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Introduction: We aimed to assess the safety, pharmacokinetic profile, and antitumor activity of adavosertib monotherapy in Japanese patients with advanced solid tumors.

Materials And Methods: This was a single-center, open-label, phase I study with two consecutive cohorts (250 mg and 200 mg cohorts). Patients received adavosertib at 250 mg or 200 mg, orally once daily for 5 days on and 2 days off for Weeks 1 and 2 of a 21-day cycle.

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  • - A study using a Japanese nationwide database aimed to explore how unawareness of diabetes medication prescriptions affects the risk of cardiovascular disease (CVD) in diabetic patients.
  • - From an analysis of over 94,000 patients, it was found that 8.3% were unaware they were prescribed diabetes medications, and this lack of awareness correlated with a higher risk of developing CVD despite younger age and better glycemic control.
  • - The findings highlight the need for improved education from healthcare providers to ensure patients are informed about their treatment, as unawareness of medication can lead to increased cardiovascular risks.
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  • Infective endocarditis (IE) is a severe condition with high mortality rates if not diagnosed and treated quickly, but studies on in-hospital death rates related to lab findings and causative organisms are limited.
  • A study analyzed 162 patients from 2009 to 2021, confirming IE with transesophageal echocardiography and focusing on factors associated with in-hospital death.
  • Significant findings indicated that lower hemoglobin levels, higher white blood cell counts, lower eGFR, and the presence of Staphylococcus as the causative agent were key predictors of higher in-hospital mortality risk in IE patients.
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  • Despite the proven benefits of cardiac rehabilitation (CR) for heart patients, many struggle to participate due to factors like busy schedules, costs, and the challenges of accessing in-person care.
  • To address these issues, remote CR is gaining traction, utilizing wearable devices and apps for telemonitoring, allowing patients to receive care from home.
  • While remote CR has shown promise in improving exercise tolerance, its long-term effects on reducing cardiac events and mortality are still debated, highlighting the need for careful patient assessments and quality assurance in remote care services.
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  • Metastatic spread of breast cancer to the gastrointestinal tract is rare, particularly for ductal carcinoma, with invasive lobular carcinoma (ILC) being more prone to such occurrences, especially colonic metastasis.
  • Three cases of ILC with colonic metastasis are presented: an elderly patient receiving best supportive care who died 4 months post-diagnosis, another undergoing bypass surgery with a 1-year survival following complications, and a third patient with a delayed diagnosis who ultimately developed severe complications leading to an abscess.
  • Treatment strategies for these cases remain unclear, emphasizing the challenges in managing metastatic ILC.
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Although cyclic peptides have become increasingly important as drugs, the most conventional peptide cyclization method using moderately active coupling agents suffers from a lot of waste and high cost as well as long reaction times and burdensome purification. Herein, we report an unconventional approach to peptide cyclization that uses acylammonium species generated from inexpensive and less wasteful Me NBn and ClCO i-Pr. Using this approach, we observed the desired rapid activation of the C-terminus of cyclization precursors by an acylammonium ion for rapid and epimerization/dimerization-free cyclization of synthetically challenging peptides, including a difficult cyclization involving N-methyl amide bond formation.

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Background: The primary objective of this phase I, open-label trial was to assess safety and tolerability of tremelimumab monotherapy and combination therapy with durvalumab in Japanese patients with advanced cancer. Tremelimumab is a fully human monoclonal antibody against CTLA-4 in clinical trials; durvalumab is a monoclonal antibody against PD-L1 for the treatment of bladder and lung cancer.

Methods: In part 1, tremelimumab 3 or 10 mg/kg was given every 4 weeks (Q4W) for 6 doses, and thereafter every 12 weeks until discontinuation (n = 8); subsequently tremelimumab 10 mg/kg Q4W for 6 doses/Q12W and thereafter until discontinuation was administered in 41 patients with malignant pleural or peritoneal mesothelioma (MPM).

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Background: Agents targeting the programmed cell death-1 pathway have demonstrated encouraging activity across multiple solid tumor types. The dose expansion phase of this phase I study evaluated the safety, tolerability, and antitumor activity of durvalumab monotherapy, and durvalumab plus tremelimumab (an anti-cytotoxic T-lymphocyte-associated antigen 4 monoclonal antibody) combination therapy, in patients from Asia with biliary tract cancer (BTC), esophageal squamous cell carcinoma (ESCC), or head and neck squamous cell carcinoma (HNSCC).

Methods: Patients with advanced BTC, ESCC, or HNSCC with disease progression during or following ≥1 platinum-based therapy received durvalumab monotherapy (10 mg/kg every 2 weeks) or durvalumab plus tremelimumab (durvalumab 20 mg/kg every 4 weeks [Q4W] plus tremelimumab 1 mg/kg Q4W for 4 doses, followed by durvalumab 20 mg/kg Q4W).

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Article Synopsis
  • - Routine surveillance of respiratory viruses is important, especially for detecting novel diseases like COVID-19, as respiratory infections are often caused by viruses.
  • - A study tested 613 specimens that were negative for SARS-CoV-2 and found that 9.6% contained other viruses, with human rhinovirus (HRV) and human metapneumovirus (HMPV) being the most detected.
  • - The findings suggest that various respiratory viruses can still be present during a pandemic, highlighting the need for systematic monitoring even in non-pandemic periods to improve clinical and public health responses.
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We report a case of Kounis syndrome that led to shock after protamine administration during percutaneous coronary intervention (PCI). A man in his 50s was admitted to the nearest hospital following the onset of acute myocardial infarction. Coronary angiography showed a single-vessel lesion in the left anterior descending artery (LAD).

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Single-shot higher-order transport-of-intensity quantitative phase imaging (SHOT-QPI) is proposed to realize simple, in-line, scanless, and single-shot QPI. However, the light-use efficiency of SHOT-QPI is low because of the use of an amplitude-type computer-generated hologram (CGH). Although a phase-type CGH overcomes the problem, the accuracy of the measured phase is degraded owing to distortion of the defocused intensity distributions, which is caused by a quantization error of the CGH.

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Computational ghost imaging (CGI) allows us to reconstruct images under a low signal-to-noise-ratio condition. However, CGI cannot retrieve phase information; it is unsuitable for observation of transparent objects such as living cells. A phase imaging method with CGI architecture is proposed.

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The imaging quality of quantitative phase imaging (QPI) based on the transport of intensity equation (TIE) can be improved using a higher-order approximation for defocused intensity distributions. However, this requires mechanically scanning an image sensor or object along the optical axis, which in turn requires a precisely aligned optical setup. To overcome this problem, a computer-generated hologram (CGH) technique is introduced to TIE-based QPI.

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Background: Sarcoid-like reaction (SLR) is a histological pattern of granulomatous inflammation that is clinically differentiated from sarcoidosis. Since SLR is known to occur in several neoplasias and occasionally causes lymphadenopathy and mimics metastatic malignancy, it needs to be considered whether lymphadenopathy is due to metastasis or SLR for the choice of cancer treatment. Few cases of hepatocellular carcinoma (HCC) with SLR have been reported.

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Lactams are cyclic amides that are indispensable as drugs and as drug candidates. Conventional lactamization includes acid-mediated and coupling-agent-mediated approaches that suffer from narrow substrate scope, much waste, and/or high cost. Inexpensive, less-wasteful approaches mediated by highly electrophilic reagents are attractive, but there is an imminent risk of side reactions.

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Binary hologram generation based on deep learning is proposed. The proposed method can reduce the severe effect of quality degradation from binarizing gray-scaled holograms by optimizing the neural network to output binary amplitude holograms directly. In previous work on binary holograms, the calculation time for generating binary holograms was long.

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Well water could be a stable source of drinking water. Recently, the use of well water as drinking water has been encouraged in developing countries. However, many kinds of disorders caused by toxic elements in well drinking water have been reported.

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Deep-learning-based single-pixel phase imaging is proposed. The method, termed deep ghost phase imaging (DGPI), succeeds the advantages of computational ghost imaging, i.e.

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A phase imaging technique based on the transport of intensity equation with polarization directed flat lenses is demonstrated. Transport-of-intensity phase imaging enables one to obtain a phase distribution from through-focus intensity distributions by solving the transport of intensity equation. In general, the through-focus intensity distributions are obtained by mechanical scanning of an image sensor or target object.

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Renal congestion is a critical pathophysiological component of congestive heart failure (CHF). To quantify renal congestion, contrast-enhanced ultrasonography (CEUS) was performed at baseline and after treatment in 11 CHF patients and 9 normal subjects. Based on the time-contrast intensity curve, time to peak intensity (TTP), which reflects the perfusion rate of renal parenchyma, and relative contrast intensity (RCI), an index reflecting renal blood volume, were measured.

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A previous study showed that people living in urban areas are generally exposed to low-frequency noise (LFN) with frequencies below 100 Hz and sound levels of 60-110 dB in daily and occupational environments. Exposure to LFN has been shown to affect balance in humans and mice. However, there is no information about prevention of LFN-mediated imbalance because of a lack of information about the target region based on health risk assessment of LFN exposure.

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