Publications by authors named "Miyauchi Y"

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  • Neonatal protein C deficiency can lead to severe conditions like purpura fulminans and has a generally poor prognosis, especially regarding vision.
  • In a study of 38 survivors with biallelic PROC variants, a significant number suffered from severe visual impairments: 23 were totally blind, and only one had normal vision.
  • Prenatal intervention is crucial to enhance visual outcomes, as ocular lesions often present early in these cases, affecting the eyes before other organs.
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  • Distal radial fractures are common injuries that impact wrist motion, but the relationship between wrist range-of-motion (ROM) and radial alignment after treatment is not well studied.
  • This research involved 82 patients and measured various factors like palmar tilt, radial length, and radial inclination to assess their influence on wrist ROM limitations.
  • The findings indicated that palmar tilt significantly affects palmar flexion ROM, with older patients more likely to experience limitations, while no factors were linked to dorsal flexion restrictions.
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The effect of neglecting imaging in aspiration pneumonia diagnosis is not well understood. In this study, the computed tomography images of 50 patients diagnosed with aspiration pneumonia were retrospectively analyzed by three radiologists at a different hospital. Among these cases, 32%-42% were not classified as aspiration pneumonia based on imaging.

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  • The extracellular matrix (ECM) in skeletal muscle plays various roles beyond simply supporting muscle tissue, nerves, and blood vessels, but its specific functions are not well understood.
  • A study investigated how cisplatin, a chemotherapy drug, affects the expression of ECM-related genes during muscle atrophy in mice.
  • Results showed that cisplatin administration led to a decrease in the expression of several important ECM components, indicating a need for further research to understand the significance of these changes in muscle atrophy.
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Background: Robot-assisted surgery is widely performed for renal cell carcinoma (RCC) with inferior vena cava (IVC) tumor thrombi. Although many chemotherapeutic options are available for the treatment of unresectable RCC, there are very few reports on robot-assisted radical nephrectomy (RARN) with inferior vena cava thrombectomy (IVCT) after presurgical treatment with immune checkpoint inhibitors and tyrosine kinase inhibitors. We believe that pre-surgical treatment can provide minimally invasive surgical benefits to high-risk patients during the perioperative period.

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  • Infants born extremely preterm (22-28 weeks) are at risk for neurodevelopmental issues, and the study explores how various clinical factors impact their development over time.
  • Analyzed data from 115 out of 179 infants revealed that 29% improved in developmental quotients (DQ), while 17% declined, with height growth being a significant factor in positive outcomes.
  • The study concludes that growth in height, along with sex and sibling status, are more important than perinatal complications in predicting neurodevelopmental changes in extremely preterm infants during their early years.
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Hippocampal neurons can be the first to be impaired with neurodegenerative disorders, including Alzheimer's disease (AD). Most drug candidates for causal therapy of AD cannot either enter the brain or accumulate around hippocampal neurons. Here, we genetically engineered insulin-fusion proteins, called hippocampal neuron-targeting (Ht) proteins, for targeting protein drugs to hippocampal neurons because insulin tends to accumulate in the neuronal cell layers of the hippocampus.

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  • The Briganti nomogram, with a 5% cut-off, is used to decide if pelvic lymph node dissection (PLND) is necessary for prostate cancer patients.
  • A study analyzed data from 1,068 patients who had radical prostatectomy and found no significant oncological benefit of PLND for those with a Briganti score of 5%.
  • High PSA levels and advanced T-stage were linked to worse biochemical recurrence-free survival, while PLND did not have a meaningful impact on recurrence outcomes.
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Background: Kidney transplantation (KT) in children and adolescents with severe motor and intellectual disabilities (SMID) has been a topic of controversy. A multicenter study in Japan showed that KT was not contraindicated for children with multiple handicaps, but no consensus has been reached on KT for patients with SMID. This study aimed to determine whether KT is a viable treatment option for children and adolescents with SMID.

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Introduction: 17α-Hydroxylase deficiency is a very rare disease reported to be associated with a risk of gonadal malignancy. We herein report a rare case of seminoma in a 46, XY patient with 17α-hydroxylase deficiency.

Case Presentation: A 52-year-old woman presented with a 9-cm pelvic tumor.

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Dihydropyrazines (DHPs) are formed by non-enzymatic glycation reactions in vivo and in food. We recently reported that 3-hydro-2,2,5,6-tetramethylpyrazine (DHP-3), which is a methyl-substituted DHP, caused severe oxidative stress and cytotoxicity. However, the molecular mechanisms underlying the cytotoxic pathways of the DHP response remain elusive.

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  • The study investigates the effects of dotinurad, a new drug aimed at lowering uric acid levels, on kidney function in patients with severe renal dysfunction.
  • Researchers analyzed data from 53 outpatients with hyperuricemia and found that while serum uric acid levels decreased significantly across all groups, only patients with an estimated glomerular filtration rate (eGFR) below 30 showed significant improvement in kidney function.
  • The results suggest that dotinurad might benefit those with severe renal dysfunction by both lowering uric acid and potentially enhancing kidney function, especially in patients with lower baseline eGFR.
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  • Ventricular tachycardia (VT) linked to primary cardiac tumors (PCTs) is rare in young patients but poses significant risks; this study investigates the mechanisms and treatments for PCT-VT.
  • Four patients with PCT-VT underwent surgery, showing drug-resistant VT due to a re-entry mechanism, with electroanatomical mapping indicating issues at the tumor-myocardium interface.
  • Histopathological analysis revealed tumor infiltration causing myocardial disarray, and for patients with unresectable tumors, using cryoablation was effective in controlling VT.
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Objectives: Limited information is currently available on the efficacy and safety of axitinib for metastatic renal cell carcinoma (mRCC) patients with renal impairment. Therefore, the present study investigated the efficacy and toxicity of axitinib in patients with chronic kidney disease.

Methods: Post-hoc analyses were performed on a Japanese multicenter cohort study of 477 mRCC patients who received axitinib followed by 1 or 2 regimens of systemic antiangiogenic therapy between January 2012 and December 2016.

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This study aimed to investigate the effects of cisplatin on adenosine triphosphate (ATP) levels, expressions of genes related to mitochondrial oxidative phosphorylation (OXPHOS), and the factors related to mitochondrial biosynthesis in skeletal muscle. Systemic cisplatin administration decreased skeletal muscle mass, skeletal muscle strength, and endurance. The mitochondrial DNA /nuclear DNA ratio was also reduced after treatment with cisplatin.

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Background: Difficulty in taking solid medicines is a common issue particularly for the elderly because of a decline in swallowing function, also known as dysphagia. For patients with such a dysfunction, a simple suspension method, in which solid medicines are disintegrated and suspended using warm water, has been developed and widely used in Japanese clinical settings. However, there is little information on drug stability in the simple co-suspension of multiple formulations especially including acidic or alkaline ones.

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We aimed to examine the relationship of living arrangements (i.e., living alone or living with others) with background, clinical severity, preintervention culprit lesion plaque morphology, and clinical outcomes in patients with acute coronary syndrome (ACS).

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This study aimed to propose a patient positioning assistive technique using computed tomography (CT) scout images. A total of 210 patients who underwent CT scans in a single center, including on the upper abdomen, were divided into a study set of 127 patients for regression and 83 patients for verification. Linear regression analysis was performed to determine the R2 coefficient and the linear equation related to the mean pixel value of the scout image and ideal table height (TH ideal ).

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Background: Although many recent studies have scientifically verified the efficacy of the traditional herbal medicine daikenchuto (DKT) for postoperative gastrointestinal function, its efficacy has not been established in children. We retrospectively evaluated the effect of DKT in pediatric patients with panperitonitis associated with perforated appendicitis (PaPA) who underwent laparoscopic appendectomy.

Methods: Among 34 children with PaPA who underwent laparoscopic appendectomy from May 2012 to May 2021, 19 received DKT (group D) and 12 did not (group C).

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Cisplatin, a platinum-based anticancer drug used frequently in cancer treatment, causes skeletal muscle atrophy. It was predicted that the proteolytic pathway is enhanced as the mechanism of this atrophy. Therefore, we investigated whether a platinum-based anticancer drug affects the expression of the major proteins of skeletal muscle, myosin heavy chain (MyHC).

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Introduction: Asthma is an inflammatory reaction mediated by type 2 helper T (Th2) cells and is known to increase eosinophil levels. Our previous study showed that stress-related asthma can cause neutrophilic and eosinophilic airway inflammation by suppressing immune tolerance. However, the mechanism of stress-induced neutrophilic and eosinophilic airway inflammation remains unclear.

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Background: Nodding syndrome (NS) is one type of epilepsy and a progressive disease characterized by nodding symptoms with children in sub-Saharan Africa. The burden for NS children is heavy, not only mentally but financially for themselves and their families, and yet, the cause and cure of NS remain unknown. The kainic acid-induced model in experimental animals is a well-known epilepsy model that is useful for studying human diseases.

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Background: Diagnostic strategies depend on non-standardized workup, and the causes of myocardial infarction with non-obstructive coronary arteries remain unclear for some patients. Intracoronary imaging is recommended for detecting the missed causes by coronary angiography. Myocardial infarction with non-obstructive coronary arteries is a heterogeneous entity; a meta-analysis of myocardial infarction with non-obstructive coronary artery studies demonstrated that all-cause mortality rate at 1 year is 4.

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Glycation products are generated during the Maillard reaction, a non-enzymatic reaction between reducing sugars and the amino groups of proteins, which accumulate in the body with aging and cause many diseases. Herein, we have focused on dihydropyrazines (DHPs), which are glycation products formed by the dimerization of D-glucosamine or 5-aminolevulinic acid, and have reported that DHPs can produce several kinds of radicals and induce cytotoxicity via oxidative stress. To advance our understanding of DHP-mediated cytotoxicity, we selected a DHP, 3-hydro-2,2,5,6-tetramethylpyrazine (DHP-3), and two major Maillard reaction products, N-(carboxymethyl)-L-lysine (CML) and acrylamide, and performed comparative experiments focusing on their cytotoxicity and their ability to induce oxidative stress.

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Unlabelled: Specific targets for cancer treatment are highly desirable, but still remain to be discovered. While previous reports suggested that CAPRIN-1 localizes in the cytoplasm, here we now show that part of this molecule is strongly expressed on the cell membrane surface in most solid cancers, but not normal tissues. Notably, the membrane expression of CAPRIN-1 extended to the subset of highly tumorigenic cancer stem cells and epithelial-mesenchymal transition (EMT)-induced metastatic cancer cells.

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