1,634,262 results match your criteria: "Japan; Tokyo Metropolitan Institute of Gerontology[Affiliation]"

Humans can estimate the time and position of a moving object's arrival. However, numerous studies have demonstrated superior position estimation accuracy for descending objects compared with ascending objects. We tested whether the accuracy of position estimation for ascending and descending objects differs between the upper and lower visual fields.

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New Year's greetings 2025 from the Journal of Plant Research.

J Plant Res

January 2025

Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan.

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Bone Marrow-derived NGFR-positive Dendritic Cells Regulate Arterial Remodeling.

Am J Physiol Cell Physiol

January 2025

Department of Cardiovascular Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa, Japan.

It has been proposed that bone marrow contributes to the pathogenesis of arteriosclerosis. Nerve growth factor receptor (NGFR) is expressed in bone marrow stromal cells; it is also present in peripheral blood and ischemic coronary arteries. We hypothesized that bone marrow-derived NGFR-positive (NGFR) cells regulate arterial remodeling.

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Formic acid (HCOOH) is one of the essential molecules for CO utilization including methanol synthesis and hydrogen carriers. In this study, we have investigated the chemical processes of hydrogen and HCOOH on a dilute-alloy Pd-Cu(111) surface using high-resolution X-ray photoelectron spectroscopy (HR-XPS) and density functional theory (DFT) calculations. The present Pd-Cu(111) surface was prepared at 500 K, and the observed core-level shifts of Pd 3d indicate that Pd atoms were located at the surface and subsurface sites: 335.

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A Flavobacteriaceae sp. strain GF1 was isolated from an endosymbiotic dinoflagellate of a coral, and the genome was sequenced using a PacBio Sequel IIe system. The genome consists of a circular 5,300,001 bp chromosome and is predicted to harbor 6 rRNA genes, 42 tRNA genes, and 4,465 coding sequences.

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We report the complete genome sequences of two antimony-oxidizing bacteria, sp. strain ANAO-SY3R2, comprising one chromosome (4.3 Mbp) and four circular plasmids, and sp.

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is one of the major clinical anaerobic bacteria belonging to the family . Herein, we report the complete genome sequence of a clinical isolate of new species obtained from equine bronchial lavage fluid in Japan. The genome comprised a circular chromosome with a length of 2,948,037 bp.

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Emerging tick-borne orthonairovirus infections pose a growing global concern, with limited understanding of the viral ovarian tumor-like cysteine proteases (vOTUs) encoded by novel orthonairoviruses. These vOTUs, a group of deubiquinylases (DUBs), disrupt the innate immune response. Yezo virus (YEZV), a recently discovered pathogenic orthonairovirus, was first reported in Japan in 2021.

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Systolic Blood Pressure and Pulse Pressure in Heart Failure: Pooled Participant-Level Analysis of 4 Trials.

J Am Coll Cardiol

November 2024

Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. Electronic address:

Background: Hypertension is common in patients with heart failure with mildly reduced or preserved ejection fraction (HFmrEF/HFpEF), and current guidelines recommend treating systolic blood pressure (SBP) to a target <130 mm Hg. However, data supporting treatment to this target are limited. Additionally, pulse pressure (PP), a marker of aortic stiffness, has been associated with increased risk of cardiovascular events, but its prognostic impact in HFpEF has not been extensively studied.

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Dinuclear iridium complexes ligated by lithium-ion endohedral fullerene Li@C.

Chem Commun (Camb)

January 2025

Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.

The diiridium complexes of lithium-ion endohedral fullerene Li@C were synthesised in high yields. X-ray crystallography revealed the η:η-coordination of Li@C and the disorder of the Li ion over two sites close to the coordinated carbons. C NMR study suggested the presence of dynamic behaviour haptotropic rearrangements.

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Objective: Stress and working environments are risk factors for hypertension. A new occupational health policy called the Stress Check Program was started in Japan in 2015. Therefore, we clarified whether the presence or absence of high job stress (HJS) as determined using the Brief Job Stress Questionnaire (BJSQ) is related to the comorbidity of hypertension.

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Epithelial-mesenchymal transition (EMT) is a drastic and important cellular process by which epithelial cells acquire a mesenchymal phenotype. Herein, we evaluated EMT-induced membrane variations using scanning ion conductance microscopy (SICM), which allows noninvasive nanoscale visualization. The results showed that the number and size of ruffles on the living cell surface decreased as the EMT progressed.

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Bisquinoline-based fluorescent cadmium sensors.

Dalton Trans

January 2025

Laboratory for Molecular & Functional Design, Department of Engineering, Nara Women's University, Nara 630-8506, Japan.

Rational molecular design afforded fluorescent Cd sensors based on bisquinoline derivatives. Introduction of three methoxy groups at the 5,6,7-positions of the quinoline rings of BQDMEN (,'-bis(2-quinolylmethyl)-,'-dimethylethylenediamine) resulted in the reversal of metal ion selectivity in fluorescence enhancement from zinc to cadmium. Introduction of bulky alkyl groups and an ,-bis(2-quinolylmethyl)amine structure, as well as replacement of one of the two tertiary amine binding sites with an oxygen atom and the use of a 1,2-phenylene backbone significantly improved the Cd specificity.

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The Importance and Discovery of Highly Connected Covalent Organic Framework Net Topologies.

J Am Chem Soc

January 2025

Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.

Furthering the field of synthetic organic chemistry from the discrete molecules regime to the extended structure regime, covalent organic frameworks (COFs) represent a new genre of crystalline porous materials featuring designability with molecular-level precision, well-defined porosity, and exceptional stability imparted by the robust covalent linkages reticulating organic molecules. The topology of COFs is a principal feature that regulates their functionality and usability for emerging technologies. Profound comprehension of network topologies and maneuvering them toward targeted applications are crucial to advancing the realm of COF research and developing novel functional materials for exciting breakthroughs.

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Cryptorchidism is the most frequent congenital defect in newborn males characterized by the absence of the testis from the scrotum. Approximately 90% of patients with untreated bilateral cryptorchidism exhibit azoospermia due to defective spermatogenesis in the affected testis. While abnormal spermatogonial stem cell maintenance or differentiation is suggested to cause germ cell degeneration in the cryptorchid testis, underlying molecular mechanisms remain unclear.

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A master regulatory loop that activates genes in a temporally coordinated manner in muscle cells of ascidian embryos.

Development

January 2025

Department of Zoology, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan.

Ascidian larval muscle cells present a classic example of autonomous development. A regulatory mechanism for these cells has been extensively investigated, and the regulatory gene circuit has been documented from maternal factors to a muscle-specific gene. In the present study, we comprehensively identified genes expressed specifically in ascidian muscle cells, and found that all of them are under control of a positive regulatory loop of Tbx6-r.

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G9a/GLP Modulators: Inhibitors to Degraders.

J Med Chem

January 2025

SANKEN, Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan.

Histone methylation, a crucial aspect of epigenetics, intricately involves specialized enzymes such as G9a, a histone methyltransferase (HMT) catalyzing the methylation of histone H3 lysine 9 (H3K9) and H3K27. Apart from histone modification, G9a regulates essential cellular processes such as deoxyribonucleic acid (DNA) replication, damage repair, and gene expression via modulating DNA methylation patterns. The dysregulation and overexpression of G9a are intricately linked to cancer initiation, progression, and metastasis, making it a compelling target for anticancer therapy.

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Self-Assembly and Drug Encapsulation Properties of Biocompatible Amphiphilic Diblock Copolymers.

Langmuir

January 2025

Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Shosha, Himeji, Hyogo 671-2201, Japan.

To prepare amphiphilic diblock copolymers (MP), a controlled radical polymerization approach was employed, incorporating hydrophilic poly(2-(methacryloyloxy)ethyl phosphorylcholine) (PMPC) with hydrophobic poly(3-methoxypropyl acrylate) (PMPA). The synthesized diblock copolymers feature a PMPC block with a degree of polymerization (DP) of 100 and a PMPA block with DP (=) values of 171 and 552. The hydrophilic PMPC block exhibits biocompatibility, such as inhibition of platelet and protein adsorption, because of its hydrophilic pendant zwitterionic phosphorylcholine groups that have the same chemical structure as cell membrane surfaces.

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Direct Givens rotation method based on error back-propagation algorithm for self-consistent field solution.

J Chem Phys

January 2025

Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.

The self-consistent field (SCF) procedure is the standard technique for solving the Hartree-Fock and Kohn-Sham density functional theory calculations, while convergence is not theoretically guaranteed. Direct minimization methods, such as the augmented Lagrangian method (ALM) and second-order SCF (SOSCF), obtain the SCF solution by minimizing the Lagrangian with the gradient. In SOSCF, molecular orbitals are optimized by truncating the Taylor expansion of a unitary matrix represented in exponential form to ensure the orthonormality condition.

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Rubrene is one of the leading organic semiconductors in scientific and industrial research, showing good conductivities and utilities in devices such as organic field-effect transistors. In these applications, the rubrene crystals often contact ionic liquids and other materials. Consequently, their surface properties and interfacial interactions influence the device's performance.

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The liquid/liquid interfaces of room-temperature ionic liquids (RTILs) play a pivotal role in chemical reactions owing to their characteristic microscopic structure, yet the structure of hydrophobic liquid/RTIL interfaces remains unclear. We studied the structure at the liquid/liquid interfaces of carbon tetrachloride (CCl4) and 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([Cnmim][TFSA]; n = 4 and 8) RTILs using infrared-visible sum frequency generation (SFG) vibrational spectroscopy. A comparison of the SFG spectra of the CCl4/RTIL and air/RTIL interfaces revealed that the solvation of the alkyl chains of the [Cnmim]+ cations by CCl4 reduces the number of gauche defects in the alkyl chain and the interface number density of the cation at the CCl4 interface.

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