24,292 results match your criteria: "Tokyo University of Agriculture & Technology 2-24-16 Naka-machi[Affiliation]"

Background: Myxomatous mitral valve disease (MMVD) is the most common acquired heart disease in dogs. Mitral valvuloplasty (MVP) addresses regurgitation, but the pre- and postoperative changes in myocardial function remain uncertain.

Objectives: This study evaluated myocardial motion before and after MVP using two-dimensional speckle-tracking echocardiography (2D-STE).

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Comprehensive gene expression analysis in gallbladder mucosal epithelial cells of dogs with gallbladder mucocele.

J Vet Intern Med

November 2024

Laboratory of Veterinary Internal Medicine, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Sciences, The University of Tokyo, Tokyo, Japan.

Background: Gallbladder mucocele (GBM) is a common disease in the canine gallbladder. Although the pathogenesis of GBM remains unclear, we recently reported that the excessive accumulation of mucin in the gallbladder is not a result of overproduction by gallbladder epithelial cells (GBECs).

Hypothesis/objectives: Changes in the function of GBECs other than the production of mucin are associated with the pathogenesis of GBM.

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Progesterone (P4)-impregnated controlled internal drug-releasing device for goats and sheep (CIDR-G) is used in the estrus synchronization protocol; however, it is not commercially available in Japan. In this study, we investigated whether a modification of CIDR-B, designed for cattle, could be used as a P4 release device for synchronizing estrus in goats. An in vitro analysis showed that the dissolution rate was not significantly different between CIDR-G and modified CIDR-B (CIDR-M).

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Testate amoebae from the wetlands of the Phobjikha Valley of Bhutan, the Eastern Himalayas.

Eur J Protistol

October 2024

Science Research Center, Hosei University, Fujimi, Chiyoda-ku, Tokyo 102-8160, Japan. Electronic address:

The Kingdom of Bhutan in the Eastern Himalayas harbors a rich biodiversity. However, its detailed documentation still needs to be created, including not only macroorganisms but also protists. In the present study, as many as 105 taxa of testate amoebae were identified and directly counted in soil suspension samples collected from the wetlands of the Gangtey-Phobji Valley (generally Phobjikha), Wangdue Phodrang district.

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The Ogasawara Islands, one of the UNESCO World Natural Heritage Site located about 1000 km south of Japan's main island, harbor numerous endemic species, many of which are as endangered. One of the endemic plant species, Lobelia boninensis, found in the Mukojima, Chichijima, and Hahajima archipelagoes, is endangered due to predation. As part of conservation efforts, translocation is now underway, especially on Chichijima.

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Pathogenicity and sub-lethal activity of orally administered entomopathogenic fungi against two adult mosquito species, Aedes aegypti (Diptera: Culicidae) and Anopheles stephensi (Diptera: Culicidae).

J Invertebr Pathol

November 2024

Department of Agro-environmental Science, Obihiro University of Agriculture & Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan; Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan. Electronic address:

Article Synopsis
  • Entomopathogenic fungi (EPF) effectively kill mosquitoes like Aedes aegypti and Anopheles stephensi, primarily through cuticle penetration; however, the effects of orally administered EPF on these species have not been well-studied.
  • This research evaluated the oral administration of EPF, particularly Beauveria pseudobassiana 42-51, on several biological aspects of both mosquito species, leading to significant reductions in blood feeding (63% for A. aegypti; 43% for A. stephensi) and egg hatchability (83% and 74%, respectively).
  • Additionally, the study found that B. pseudobassiana caused abnormal follicle development and reduced attraction to host odors
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The present article describes the successful performance of crossed aldol reactions of the CF-containing pseudo-C symmetric cyclic imide with various aldehydes. The utilization of HMPA as an additive attained the preferential formation of the -products in good to excellent yields, which contrasts with our previous method without this additive, proceeding to furnish the corresponding -isomers. The effective participation of ketones and α,β-unsaturated carbonyl compounds in reactions with this imide was also demonstrated to expand the application of this imide.

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The influence of as-cast grain size on recrystallization and the related mechanical properties of Al-Zn-Mg-Cu-based alloys was investigated. Grain sizes ranging from 163 to 26 μm were achieved by adding Ti, Cr and Mn, and ZnO nano-particles, which acted as heterogeneous nucleation sites. A decrease in the as-cast grain size led to a corresponding reduction in the recrystallized grain size from 54 to 13 μm.

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Immunomodulation by Leishmania parasites: Potential for controlling other diseases.

Parasitol Int

February 2025

Laboratory of Molecular Immunology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan. Electronic address:

In the mammalian hosts, Leishmania parasites survive and proliferate within phagolysosomes of macrophages. To avoid being killed by the immune cells, Leishmania parasites utilize their molecules to manipulate macrophages' functions for survival. Targets of such immunomodulatory molecules are not limited to macrophages, as Leishmania-derived molecules sometimes show influence on other immune cells such as neutrophils, dendritic cells, T cells and B cells.

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Inconsistent identification of Apilactobacillus kunkeei-related strains obtained by well-developed overall genome-related indices.

Syst Appl Microbiol

November 2024

Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, 156-8502 Tokyo, Japan. Electronic address:

During a decade, overall genome related indices, including average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH), have been used as standards for the classification and identification of bacteria. On the other hand, a former study suggested that ANI-based classification is difficult for fructophilic lactic acid bacterium Apilactobacillus kunkeei. In the present study, the classification of Apilactobacillus spp.

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Overconsumption of food, especially dietary fat, leads to metabolic disorders such as obesity and type 2 diabetes. Long-chain fatty acids, such as palmitoleate are recognized as the risk factors for these disorders owing to their high-energy content and lipotoxicity. In contrast, medium-chain fatty acids (MCFAs) metabolic benefits; however, their underlying molecular mechanisms remain unclear.

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Weevils represent one of the most speciose and economically important animal clades, but remain poorly studied across much of the Oriental Region. Here, an integrative revision of the Oriental, flightless genus Voss, 1957 (Curculionidae: Molytinae) based on X-ray microtomography, multi-gene DNA barcoding (CO1, Cytb, 16S), and traditional morphological techniques (light microscopy, dissections) is presented. Twelve new species, namely, Lewis & Kojima, , Kojima & Lewis, , Lewis, , Lewis & Kojima, , Kojima, Lewis & Fujisawa, , Kojima & Lewis, , Lewis & Kojima, , Lewis & Kojima, , Kojima & Lewis, , Lewis & Kojima, , Lewis & Kojima, , and Lewis, Fujisawa & Kojima, are described from Japan, Taiwan, Vietnam, and Malaysia.

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Significance: Confocal microscopy is an indispensable tool for biologists to observe samples and is useful for fluorescence imaging of living cells with high spatial resolution. Recently, phase information induced by the sample has been attracting attention because of its applicability such as the measurability of physical parameters and wavefront compensation. However, commercially available confocal microscopy has no phase imaging function.

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Bioaugmentation with electrochemically active bacteria (EAB) has been suggested useful for improving the performance of bioelectrochemical systems (BESs) for sustainable energy generation, while its success is dependent on EAB introduced into the systems. Here we report on the isolation of a novel EAB, Geobacter sulfurreducens strain 60473, from microbes that colonized on an anode of a sediment microbial fuel cell. This strain is highly adhesive to graphite electrodes, forms dense biofilms on electrode surfaces, and generates high current densities in BESs.

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Article Synopsis
  • Glycerophosphocholine (GPC) is a metabolite related to choline in cells and has been considered a potential supplement for brain health, but high choline intake may lead to TMAO production, linked to atherosclerosis.
  • This study investigates how GPC is absorbed and metabolized by the intestine, showing that it converts to choline and is transported into cells.
  • Researchers highlighted the enzyme Gpcpd1, which regulates this conversion and TMAO levels, with experiments indicating that its absence alters GPC metabolism and lowers TMAO in the bloodstream.
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Article Synopsis
  • - Plants transport nutrients to chloroplasts during leaf development, but in times of senescence or sugar starvation, they use autophagy to degrade chloroplast proteins for nutrient recycling.
  • - Researchers observed that in sugar-starved leaves, chloroplasts form budding structures that are released and incorporated into vacuoles as part of a process called autophagy, specifically involving Rubisco-containing bodies.
  • - The study found that the budding process is linked to autophagosome formation, with isolation membranes of these structures interacting with chloroplasts, leading to fragmentation for degradation without requiring a known division protein for typical chloroplast replication.
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Article Synopsis
  • HRV44, a thermophilic chemolithoautotroph, is highly effective at converting nitrous oxide (NO) to dinitrogen gas and possesses a specific type of enzyme (NosZ) involved in this reduction process.
  • Transcriptome and proteomic analyses showed that many genes related to denitrification were active even without the presence of nitrogen oxides, suggesting a baseline readiness for NO reduction.
  • The study found that gene expression involved in electron transport to NosZ increased in response to NO within three hours, while two genes regulating this process showed negative correlations with their expression, indicating complex regulatory interactions.
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Anti-Inflammatory Thrombolytic JX10 (TMS-007) in Late Presentation of Acute Ischemic Stroke.

Stroke

December 2024

Department of Research and Development, TMS Co, Ltd, Fuchu, Japan (N.N., K. Hasegawa, K. Hasumi).

Background: Contemporary thrombolytics in acute ischemic stroke are limited to administration within 4.5 hours of last known normal. JX10 (formerly TMS-007), a triprenyl phenol family member, may extend this therapeutic window.

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A spatiotemporal understanding of gene function requires the precise control of gene expression in each cell. Here, we use an infrared laser-evoked gene operator (IR-LEGO) system to induce gene expression at the single-cell level in the moss Physcomitrium patens by heating a living cell with an IR laser and thereby activating the heat shock response. We identify the laser irradiation conditions that provide higher inducibility with lower invasiveness by changing the laser power and irradiation duration.

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Antitumor effects of inhibitors of ERK and Akt pathways in canine histiocytic sarcoma cell lines.

Vet J

December 2024

Laboratory of Veterinary Internal Medicine, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan.

Canine histiocytic sarcoma (CHS) is characterized by aggressive biological behavior. In our previous study, ERK and Akt pathways were found to be activated in CHS tissues. Thus, the objective of this study was set to investigate the relationships between the activation status of these pathways and the proliferation of CHS cell lines by examining the effects of single and co-administrations of drugs targeting these pathways.

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We prepared biocompatible elastic fibers with high porosity and high tensile strength from poly[()-3-hydroxybutyrate--4-hydroxybutyrate], which is a microbial polyester that can be produced from renewable carbon resources by isothermal crystallization. It was possible to control the pore size by adjusting the isothermal crystallization time. Most of the pores were approximately less than 10 μm in diameter, did not penetrate, and were distributed discontinuously throughout the fibers.

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Background: The Japanese cedar (Cryptomeria japonica D. Don) is one of the most important Japanese forest trees, occupying approximately 44% of artificial forests and planted in East Asia, the Azores Archipelago, and certain islands in the Indian Ocean. Although the huge genome of the species (ca.

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Introduction: Smoking increases the risk of lung cancer due to a number of components of smoke. The use of novel heated tobacco products (HTPs), alternative to conventional combustion cigarettes, has increased in recent years. However, the in vivo biological effects of HTPs are poorly understood.

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1,3-Butadiynyl sulfide-based compact trialkyne platform molecule for sequential assembly of three azides.

Chem Commun (Camb)

December 2024

Chemical Bioscience Team, LBB, IIR, Institute of Science Tokyo, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.

A compact trialkyne platform with a silyl-protected 1,3-butadiynyl sulfide moiety and a terminal alkyne group has been developed for sequential regioselective transition metal-catalyzed triazole formation reactions with three azides. This method enabled the facile construction of a low-molecular-weight triazole library and the synthesis of middle-molecular-weight trifunctional probes for protein modification.

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Spatial Analysis of Gene Expression by In Situ Hybridization.

Methods Mol Biol

November 2024

Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan.

The analysis of the spatial expression patterns of genes is important for deciphering their functions. In situ hybridization provides insight into gene expression patterns at the cellular level. Here we describe a procedure for performing in situ hybridization on sections of paraffin-embedded tissue, including synthesis of labeled RNA probes, hybridization of the probes with target mRNAs, and immunological detection of the signals.

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