Publications by authors named "Takezawa Y"

Purpose: Corynebacterium species are commensals of human skin and mucous membranes and are recognized as important pathogens in ocular infections. This study investigated the clinical characteristics of Corynebacterium keratitis.

Methods: We retrospectively reviewed cases of bacterial keratitis in which Corynebacterium species were solely isolated from corneal scraping cultures collected at Ehime University Hospital between January 2010 and February 2024.

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Solitary median maxillary central incisor (SMMCI) syndrome, the mildest form of the holoprosencephaly spectrum, is a rare anomaly characterized by the presence of a single midline central incisor in both the deciduous and permanent dentitions. Affected individuals can present with additional midline defects beyond dental findings. The 22q11.

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In this study, we consider the problem of self-supervised learning (SSL) utilizing the 1-Wasserstein distance on a tree structure (a.k.a.

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In recent years, virtual reality (VR) technology has garnered attention as an educational tool. It is believed to be beneficial to utilize VR technology for the acquisition of pharmacist skills. Therefore, we developed a VR training tool aimed at acquiring skills in the preparation of pharmaceuticals in preparatory clinical education for pharmacy students.

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Article Synopsis
  • - A newborn male developed a mild bite wound on a cephalohematoma from an indoor dog at 10 days old, which led to a severe infection by a well-known bacteria.
  • - After presenting to a hospital with a fever and septic shock, the child's condition worsened, revealing multiple brain lesions and complications including hydrocephalus.
  • - The report highlights that neonates are particularly susceptible to severe infections, often resulting in neurological issues, even without direct trauma, emphasizing the risks associated with animal bites.
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  • Metal-mediated artificial base pairs are important for creating advanced DNA materials and structures through coordination bonds between nucleobases and metal ions.
  • This review highlights enzymatic methods as a promising alternative to traditional solid-phase synthesis for producing DNA strands with these artificial nucleotides, due to their mild conditions and lack of protecting groups.
  • Enzymatic techniques enable the integration of ligand-bearing nucleotides into DNA, paving the way for applications in developing metal-responsive materials, like molecular sensors and nanomachines.
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Transparency, flexibility, and high thermal conductivity are trade-offs. Specifically, we have investigated a cross-linked acrylic liquid crystal elastomer (LCE) that exhibits both transparency and flexibility while maintaining a high level of thermal conductivity. The transparent monodomain LCE sheet was achieved through a process of stretching an initially opaque polydomain sheet to 80% elongation and subsequently subjecting it to photocuring.

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Introduction: Hand, foot, and mouth disease generally occurs in children. In rare cases, hand, foot, and mouth disease affects the testicles.

Case Presentation: A 29-year-old man presented to our emergency department with testicular pain for several days after the onset of hand, foot, and mouth disease.

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Bitterness and astringency are the aversive tastes in mammals. In humans, aversion to bitterness and astringency may be reduced depending on the eating experience. However, the cellular and molecular mechanisms underlying plasticity in preference to bitter and astringent tastants remain unknown.

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  • * A cell line created in the lab displayed changes resembling skin characteristics, showing increased expression of skin-related genes and decreased PAX6 levels, linking this to conditions like dry eye syndrome.
  • * Introducing PAX6 and administering glucocorticoids or serum improved the cell line’s condition by reducing skin gene expression, suggesting potential treatments for conjunctival metaplasia.
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A Cu-responsive allosteric DNAzyme has been developed by introducing bifacial 5-carboxyuracil (caU) nucleobases, which form both hydrogen-bonded caU-A and metal-mediated caU-Cu-caU base pairs. The base sequence was logically designed based on a known RNA-cleaving DNAzyme so that the caU-modified DNAzyme (caU-DNAzyme) can form a catalytically inactive structure containing three caU-A base pairs and an active form with three caU-Cu-caU pairs. The caU-DNAzyme was synthesized by joining short caU-containing fragments with a standard DNA ligase.

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DNA three-way junction (3WJ) structures with three amino acid side chains in the core have been synthesized post-synthetic DNA modification. Amide condensation reactions of oligonucleotides containing 2'-aminouridine with activated esters yielded DNA strands modified with His, Cys and Asp side chains to form modified 3WJs. Even a 3WJ with three negatively charged Asp side chains formed stably at room temperature.

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A compact 8-17 DNAzyme was modified with a Cu-meditated artificial base pair to develop a metal-responsive allosteric DNAzyme. The base sequence was rationally designed based on the reported three-dimensional structure. The activity of the modified DNAzyme was enhanced 5.

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The molecular orientation of a liquid crystalline (LC) epoxy resin (LCER) on silane coupling surfaces of amorphous soda-lime-silica glass substrates was investigated. The LC epoxy monomer on the silane coupling surfaces of the substrates was revealed to form a smectic A (SmA) phase with planar alignments because of the relatively low surface free energy. An LCER with a curing agent, however, formed a homeotropically aligned SmA structure by curing on a substrate surface modified using a silane coupling agent with amino groups.

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Rational design of self-assembled DNA nanostructures has become one of the fastest-growing research areas in molecular science. Particular attention is focused on the development of dynamic DNA nanodevices whose configuration and function are regulated by specific chemical inputs. Herein, we demonstrate the concept of metal-mediated base-pair switching to induce inter- and intramolecular DNA strand displacement in a metal-responsive manner.

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Introduction: Variants in the galactosidase alpha () gene cause Fabry disease (FD), an X-linked lysosomal storage disorder caused by α-galactosidase A (α-GAL) deficiency. Recently, disease-modifying therapies have been developed, and simple diagnostic biomarkers for FD are required to initiate these therapies in the early stages of the disease. Detection of urinary mulberry bodies and cells (MBs/MCs) is beneficial for diagnosing FD.

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Incorporation of interstrand metal complexes into DNA is a versatile strategy for metal-dependent stabilization and structural induction of DNA supramolecular structures. In this study, we have synthesized DNA three-way junction (3WJ) structures modified with phenanthroline (phen) ligands. The phen-modified 3WJ was found to be thermally stabilized (Δ = +16.

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Repeated implantation failure is a major cause of infertility among healthy women. Uterine β-catenin (CTNNB1) plays a critical role in implantation. However, the role of embryonic CTNNB1 during implantation remains unclear.

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Background: Enzalutamide (ENZ) is used in the treatment of patients with castration-resistant prostate cancer (CRPC). The quality of life (QoL) of CRPC patients during ENZ treatment is very important, but predictive markers of QoL have not been identified. We investigated the relationship between the serum testosterone (T) level before ENZ treatment and QoL changes in CRPC patients.

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Article Synopsis
  • Researchers are exploring how external stimuli can control DNA assembly, focusing on dynamic ligand exchange in metal complexes.
  • This study introduces a new bifacial nucleoside, dcaU, which can form both hydrogen-bonded and metal-mediated base pairs.
  • The presence of Gd ions stabilizes certain DNA structures and enables reversible control over hybridization preferences, making dcaU a promising tool for designing responsive DNA systems.
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Neonatal hypoxia causes cytotoxic neuronal swelling by the entry of ions and water. Multiple water pathways have been implicated in neurons because these cells lack water channels, and their membrane has a low water permeability. NKCC1 and KCC2 are cation-chloride cotransporters (CCCs) involved in water movement in various cell types.

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Artificial metal-mediated DNA base pairing is a promising strategy for creating highly functionalized DNA supramolecules. Here we report a novel ligand-type triazole-4-carboxylate (TazC) nucleoside that is readily prepared by the click reaction. TazC nucleosides were found to form a stable TazC-Cu-TazC base pair inside DNA duplexes, resulting in Cu-specific duplex stabilization (Δ = +7.

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Metal-mediated nucleobase pairing can play a central role in the expression of metal-responsive DNA functions. We report the Cu-mediated stabilisation of DNA duplexes bearing damaged nucleobases, 1,-ethenoadenine (εA), as metal-binding sites, which was utilised to construct a metal-responsive DNAzyme. Consecutive incorporation of three or more εA-εA mismatch pairs allowed for Cu-dependent significant duplex stabilisation through metal-mediated εA-Cu-εA base pairing.

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This study investigates the mechanisms governing experience-dependent tolerance of bitter compounds in Caenorhabditis elegans. The nematodes showed an aversion to nicotinamide, MgCl2, isoleucine, and arginine in a Gα-dependent manner. Worms furthermore displayed diminished avoidance of MgCl2 upon MgCl2-preconditioning at the larval stages.

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