Publications by authors named "Yuko Hata"

Developmental toxicity testing is essential to identify substances that may harm embryonic development. This study aimed to establish a protocol for evaluating developmental toxicity using human induced pluripotent stem cells (iPSCs) by analyzing cellular activity and gene expression changes. Two ICH S5(R3) positive substances, valproic acid (VPA), which is a substance previously detected as positive by other test methods, and thalidomide (Thalido), were examined during early trichoderm differentiation without fetal bovine serum.

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Article Synopsis
  • Researchers focused on identifying new serum extracellular vesicle (EV)-based biomarkers for detecting resistance to androgen receptor signaling inhibitors (ARSIs) in metastatic prostate cancer (PC) and castration-resistant prostate cancer (CRPC).
  • They used RNA-sequencing on serum EVs from CRPC patients before and after developing ARSI-resistance to analyze changes in gene expression, particularly looking at mitochondrial oxidative phosphorylation (OXPHOS)-related genes.
  • The study found that SDHB mRNA levels were significantly higher in EVs from ARSI-resistant CRPC patients, suggesting that EV-SDHB could serve as a novel biomarker for early diagnosis of ARSI-resistance.
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In sake brewing, the steamed rice is used in 2 ways, added to sake-mash and making rice. Rice- is made from the steamed rice by using starter, and its quality is an important determinant of the aroma/taste of sake. The sake rice (KOS) was developed in Niigata Prefecture by crossing 2 sake rice varieties, and .

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In sake brewing, the steamed rice is used in two ways, added to sake-mash (as ) and making . The rice is an important determinant for the quality of sake, as the metabolites in sake affect its taste/aroma. The sake rice (KOS) was developed in Niigata Prefecture by genetically crossing two sake rice, and .

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Background: Koshu, a hybrid of Vitis vinifera L. and V. davidii Foex, is the most popular indigenous cultivar for wine production in Japan.

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Background: According to EULAR recommendations, biologic DMARDs (bDMARDs) such as tumor necrosis factor inhibitor, tocilizumab (TCZ), and abatacept (ABT) are in parallel when prescribing to rheumatoid arthritis (RA) patients who have shown insufficient response to conventional synthetic DMARDs. However, most prediction studies of therapeutic response to bDMARDs using gene expression profiles were focused on a single bDMARD, and consideration of the results from the perspective of RA pathophysiology was insufficient. The aim of this study was to identify the specific molecular biological features predicting the therapeutic outcomes of three bDMARDs (infliximab [IFX], TCZ, and ABT) by studying blood gene expression signatures of patients before biologic treatment in a unified test platform.

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Background: Clinical allogeneic islet transplantation has become an attractive procedure for type 1 diabetes mellitus treatment. However, there is a severe shortage of human donors. Microencapsulated neonatal porcine islet (NPI) xenotransplantation may be an alternative transplantation procedure.

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The heart has remarkable capacity to adapt to mechanical load and to dramatically change its phenotype. The mechanism underlying such diverse phenotypic adaptations remains unknown. Since systolic overload induces wall thickening, while diastolic overload induces chamber enlargement, we hypothesized that cardiac phase-sensitive mechanisms govern the adaptation.

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Myocardial mitochondrial DNA (mtDNA) copy number decreases in heart failure. In post-myocardial infarction mice, increasing mtDNA copy number by overexpressing mitochondrial transcription factor attenuates mtDNA deficiency and ameliorates pathological remodeling thereby markedly improving survival. However, the functional significance of increased mtDNA copy number in hypertensive heart disease remains unknown.

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The overexpression of mitochondrial transcription factor A (TFAM) attenuates the decrease in mtDNA copy number after myocardial infarction, ameliorates pathological hypertrophy, and markedly improves survival. However, non-transgenic strategy to increase mtDNA for the treatment of pathological hypertrophy remains unknown. We produced recombinant human TFAM protein (rhTFAM).

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A case of a spontaneous retropharyngeal hematoma in a patient on chronic hemodialysis is described. A 75-year-old man presented with a 5-day history of throat discomfort and neck swelling. He had been on hemodialysis for chronic renal failure with secondary hyperparathyroidism.

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Objectives: We described the characteristics of congenital cholesteatoma in Japanese patients and assessed whether the staging system is useful for predicting the rate of residual disease, the need for reexploration, and surgical outcomes.

Methods: We performed a retrospective chart analysis of 23 consecutive patients with congenital cholesteatoma.

Results: The proportion of cases with anterior-superior quadrant involvement was significantly lower in the Asian group than in Western patients.

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To prepare cured epoxy resin particles encapsulating a curing agent (diamine), the self-assembly of phase-separated polymer (SaPSeP) method was developed to be applicable to polyaddition reaction of a stoichiometrically imbalanced system. The SaPSeP method was developed by the authors for preparation of micrometer-sized, hollow cross-linked polymer particles by radical polymerization based on the self-assembly of phase-separated polymer at the inner interface of particles. Although a polyaddition reaction, in general, requires that the reactants are in stoichiometric balance for the cure reaction to proceed well, diamine was successfully encapsulated within a cured epoxy resin shell by utilizing the SaPSeP method regardless of stoichiometric imbalance.

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It has been tacitly assumed that a long descending motor tract axon consists of a private line connecting the cell of origin to a single muscle, as a motoneuron innervates a single muscle. However, this notion of a long descending motor tract referred to as a private line is no longer tenable, since recent studies have showed that axons of all major long descending motor tracts send their axon collaterals to multiple spinal segments, suggesting that they may exert simultaneous influences on different groups of spinal interneurons and motoneurons of multiple muscles. The long descending motor systems are divided into two groups, the medial and the lateral systems including interneurons and motoneurons.

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