Publications by authors named "Yuka Hayashi"

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  • * A case study featured a cancer survivor who experienced heart failure 20 years after treatment, and showed notable improvement when a combination of heart medications, including vericiguat, were introduced.
  • * The results suggest that this multidrug approach, including the additions of vericiguat and ivabradine, could effectively manage worsening heart failure in young cancer survivors suffering from severe
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  • The study focuses on the importance of measuring hepatitis B surface antigen (HBsAg) for the management of chronic hepatitis B virus infection (CHB) and examines preS1 protein expression in patients.
  • Researchers used seven monoclonal antibodies to analyze preS1 from various hepatitis B genotypes, discovering that the epitopes crucial for recognition are largely located in the aa33-47 region.
  • Findings indicate that preS1 expression remains stable across different HBsAg levels and genotypes, emphasizing its potential as a therapeutic target in treating CHB.
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  • * Investigations showed low serum ceruloplasmin levels, high urinary copper excretion, and a known mutation in the ATP7B gene linked to copper metabolism.
  • * A new mutation was identified in the patient's other allele, classified as 'likely pathogenic' based on guidelines from the American College of Medical Genetics, confirming a diagnosis of Wilson's disease.
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Fabry disease (FD) is an inherited lysosomal storage disease caused by deficiency of α-galactosidase A (α-Gal A), an enzyme that hydrolyzes glycosphingolipids in lysosome. Accumulation of glycosphingolipids, mainly globotriaosylceramide (Gb3) in tissues, induces cellular dysfunction leading to multi-organ disorder. Gene therapy is a promising strategy that can overcome these problems, and virus vectors such as adeno-associated virus (AAV) have been used for study on gene therapy.

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The effect of the presence of fluorous tags in bisoxazoline ligands on the stereoselectivity of the cobalt-catalyzed asymmetric Henry reaction was investigated. In contrast to the stereoselectivity obtained with conventional nonfluorous ligands, using bisoxazoline bidentate ligands featuring two fluorous tags in adjacent positions on the aromatic ring yielded a reversed stereoselectivity. The stereoselectivity also reversed when the fluorous tags were replaced with alkyl chains of equivalent length, albeit to a considerably lesser degree, highlighting the effect of the fluorous tags.

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  • An 80-year-old Japanese man experienced intra-abdominal hemorrhage from a ruptured liver tumor and initially underwent transcatheter arterial embolization (TAE) to control the bleeding.
  • Despite the initial success of TAE, he died four days later due to re-rupture of the tumor, which was later identified as hepatic angiosarcoma through autopsy.
  • The procedure did not result in tumor necrosis or ischemic changes, indicating that TAE may not be an effective treatment for hepatic angiosarcoma and highlighting the need for better treatment options for this condition.
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Aim: Sequential therapies are essential to extend overall survival (OS) in patients with unresectable hepatocellular carcinoma (HCC). Several second-line treatments with molecular target agents have shown survival benefits. However, the significance of post-progression survival (PPS) in extending OS in patients with HCC given such treatments remains uncertain.

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Introduction: Atezolizumab plus bevacizumab (Atez/Bev) is a standard treatment for unresectable hepatocellular carcinoma (HCC) due to its good antitumor and survival prolongation effects. Post-progression survival (PPS) has been reported to be a great contributor in the treatment with tyrosine kinase inhibitors for unresectable HCC. This study aimed to clarify the significance of progression-free survival (PFS) or PPS of Atez/Bev treatment for HCC.

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Background: Fabry disease (FD) is an inherited lysosomal storage disease caused by deficiency of α-galactosidase A (α-Gal A) encoded by the GLA gene. The symptoms of FD occur as a result of the accumulation of globotriaosylceramide (Gb3), comprising a substrate of α-Gal A, in the organs. Adeno-associated virus (AAV)-mediated gene therapy is a promising treatment for FD.

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Background: Thrombocytopenia due to hypersplenism is a major complication of hepatitis C virus (HCV)-associated cirrhosis. HCV eradication improves these complications in some patients, but the long-term effects of HCV eradication on these complications remain unclear, especially in patients treated with direct acting antivirals (DAAs). The aim was to evaluate long term changes in thrombocytopenia and leucopenia after HCV eradication with DAAs.

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Background: Parkinson's disease (PD) adversely affects the quality of life (QoL) of not only patients but also their caregivers.

Objective: To determine the factors that most impact the QoL of family caregivers of patients with PD in a large Japanese population using data from the Japanese Quality-of-Life Survey of Parkinson's Disease (JAQPAD) study.

Methods: Questionnaires, including the Parkinson's Disease Questionnaire-Carer (PDQ-Carer), were distributed to patients and their caregivers.

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The influenza A(H1N1)pdm09 virus that emerged in 2009 causes seasonal epidemic worldwide. The virus acquired several amino acid substitutions that were responsible for antigenic drift until the 2018-2019 influenza season. Viruses possessing mutations in the NA and PA proteins that cause reduced susceptibility to NA inhibitors and baloxavir marboxil, respectively, have been detected after antiviral treatment, albeit infrequently.

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Sarcomatoid hepatocellular carcinoma (sHCC) is a rare phenotype of HCC with extremely poor prognosis and no established pharmacological treatment. Interventional therapies such as radiofrequency ablation (RFA) or transcatheter arterial embolization (TAE) have been shown to limit the development of sHCC through mechanisms involving hypoxia-induced epithelial-mesenchymal transition. This report describes an 83-year-old man who developed sHCC 2 years after RFA treatment for HCC and experienced sHCC rupture.

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Background: Allergic diseases were long considered to be complex multifactorial disorders. However, recent findings indicate that severe allergic inflammation can be caused by monogenic immune defects.

Objectives: We sought to clarify the molecular pathogenesis of a patient with early-onset multiple allergic diseases, a high serum IgE level, hypereosinophilia, treatment-resistant severe atopic dermatitis with increased dermal collagen fiber deposition, and eosinophilic gastrointestinal disorder with numerous polypoid nodules.

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Background/aim: Lenvatinib is a tyrosine kinase inhibitor (TKI) more effective against hepatocellular carcinoma (HCC) than sorafenib, making lenvatinib a first-line treatment option for patients with unresectable HCC. In patients treated with sorafenib, post-progression survival (PPS) rather than progression-free survival (PFS) is essential for overall survival (OS). However, the importance of PPS for OS in patients treated with lenvatinib is uncertain, and optimal treatment after lenvatinib failure has not yet been established.

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Several autoantigens related to inflammatory myopathy have been identified. Antimitochondrial antibody M2 (AMA-M2) is known as one of the serologic hallmarks of primary biliary cholangitis (PBC). There have been several reports on the association between AMA-M2 and various types of inflammatory myopathy, including cardiomyopathy.

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Background: Hepatocellular carcinoma (HCC) in hepatitis C virus (HCV)-infected patients has a high risk of recurrence. Although eradication of HCV is expected to reduce this risk, the risk in patients with a history of HCC may be high after treatment with direct-acting antivirals (DAAs).

Aim: To determine the risk factors for HCC recurrence in patients with HCV and a history of HCC.

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Brown adipose tissue (BAT) has a role in maintaining systemic metabolic health in rodents and humans. Here, we show that metabolic stress induces BAT to produce coagulation factors, which then-together with molecules derived from the circulation-promote BAT dysfunction and systemic glucose intolerance. When mice were fed a high-fat diet (HFD), the levels of tissue factor, coagulation Factor VII (FVII), activated coagulation Factor X (FXa), and protease-activated receptor 1 (PAR1) expression increased significantly in BAT.

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Introduction: Deep brain stimulation (DBS) is an effective treatment for advanced Parkinson's disease (PD) with the targeting bilateral subthalamic nucleus or globus pallidus internus (STN or GPi-DBS). So far, detailed studies on the efficacy of unilateral STN-DBS for motor symptoms have been reported, but few studies have been conducted on unilateral GPi-DBS.

Materials And Methods: Seventeen patients with Parkinson's disease (PwPD) who underwent unilateral GPi-DBS were selected.

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  • The report discusses two patients diagnosed with gastric linitis plastica (GLP) using endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) with a Franseen-tip needle.
  • Traditional methods like conventional endoscopy and bite-on-bite biopsies failed to provide a diagnosis, but EUS-FNB successfully obtained histopathological samples.
  • The findings suggest that EUS-FNB is a safe and effective technique for diagnosing GLP, especially when other methods are inadequate.
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We report a rare case of hereditary breast and ovarian cancer syndrome (HBOC) with pathogenic variants in both and . The patient was a 78-year-old woman who visited the hospital after noticing a lump in her left breast 6 months before, which gradually increased in size. According to her family history, her maternal aunt developed breast cancer in her 40s.

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Thermostable l-glutamate oxidases (LGOXs) are desirable for use in l-glutamate (L-Glu) assay kits, enzymatic synthesis of α-ketoglutarate and for biosensor development. However, protein engineering efforts to improve thermostability often lead to a decrease in enzymatic activity. In this report, we aimed to enhance the thermostability (melting temperature, T) of a mesophilic LGOX from Streptomyces sp.

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