4,968 results match your criteria: "Graduate School of Agricultural Science[Affiliation]"

is a plant-parasitic nematode that severely damages garlic ( L.) in Japan. is detected in roots, bulbs, and outer bulb skins of garlic at harvest; however, the resistance of garlic to infection is not well understood.

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is not necessary for male fertility, but contributes to maintaining sperm morphology.

J Reprod Dev

December 2024

Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8572, Japan.

Selenoprotein P (SeP) is synthesized in the liver and plays a vital role in maintaining selenium homeostasis via transport throughout the body. Previous studies have shown that SeP-deficient mice have severely reduced expression of selenoproteins essential for testicular function, leading to male infertility. We previously reported that the high expression of Ccdc152 in hepatocytes acts as a lncRNA, suppressing SeP expression in the liver.

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Article Synopsis
  • * Farmers demonstrated a positive attitude toward tick control but often ignored essential precautions and relied on local community knowledge rather than scientific understanding of the issues.
  • * The study highlights the need for increased government and stakeholder involvement in educating farmers about ticks and TBDs, emphasizing the importance of awareness programs to correct misconceptions and implement effective preventive measures.
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Epigenetic modulation via the C-terminal tail of H2A.Z.

Nat Commun

October 2024

Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.

H2A.Z-nucleosomes are present in both euchromatin and heterochromatin and it has proven difficult to interpret their disparate roles in the context of their stability features. Using an in situ assay of nucleosome stability and DT40 cells expressing engineered forms of the histone variant we show that native H2A.

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Development of engineered IL-36γ-hypersecreting Lactococcus lactis to improve the intestinal environment.

World J Microbiol Biotechnol

October 2024

Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, 399-4598, Japan.

Interleukin (IL) 36 is a member of the IL-1-like proinflammatory cytokine family that has a protective role in mucosal immunity. We hypothesized that mucosal delivery of IL-36γ to the intestine would be a very effective way to prevent intestinal diseases. Here, we genetically engineered a lactic acid bacterium, Lactococcus lactis, to produce recombinant mouse IL-36γ (rmIL-36γ).

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Somatic mutation rates scale with time not growth rate in long-lived tropical trees.

Elife

October 2024

Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.

The rates of appearance of new mutations play a central role in evolution. However, mutational processes in natural environments and their relationship with growth rates are largely unknown, particular in tropical ecosystems with high biodiversity. Here, we examined the somatic mutation landscapes of two tropical trees, (slow-growing) and (fast-growing), in central Borneo, Indonesia.

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Spatial variations in health service utilization among migrant population: a perspective on health equity.

Front Public Health

October 2024

Division of International Environmental and Agricultural Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan.

As health equity becomes a prioritized goal in global health policy, extensive research has revealed that socio-economic and geographical factors jointly exacerbate barriers to medical service access for both internal and international migrant populations, further accelerating existing health disparities. This study explores healthcare service utilization disparities among internal migrants in China, a population profoundly affected by the country's economic reforms and urbanization since the late 1970s. These transformations have led to significant migratory movements and subsequent healthcare challenges for these populations.

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Lactic acid bacteria are among the most important bacteria in the intestinal flora and often have beneficial effects on the host. It is known that the bacteria that compose the intestinal flora are influenced by the feeding habits of host animals, but there was a lack of knowledge about lactic acid bacteria. Therefore, also considering the use of select strains as probiotics, this study investigated the relationship between the feeding habits of zoo animals and intestinal species.

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Creating a mouse model that recapitulates human tau pathology is essential for developing strategies to intervene in tau-induced neurodegeneration. However, mimicking the pathological features seen in human pathology often involves a trade-off with artificial effects such as unexpected gene insertion and neurotoxicity from the expression system. To overcome these issues, we developed the rTKhomo mouse model by combining a transgenic CaMKII-tTA system with a P301L mutated 1N4R human tau knock-in at the locus with a C57BL/6J background.

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Article Synopsis
  • Pomelo, a nutrient-rich tropical fruit important for the economy in the Vietnamese Mekong Delta, requires established nutrient balance norms for effective cultivation.
  • The study aimed to create DRIS norms for key nutrients in pomelo leaves across different growth stages and determined the sufficiency ranges for sustainable farming.
  • Results indicated deficiencies in nitrogen, phosphorus, and iron during key growth phases, providing valuable insights to help growers enhance pomelo health and production sustainability.
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Granulosa cells (GCs) in secondary follicles differentiate into cumulus cells (CCs) and mural granulosa cells (MGCs) in the antral follicle. Only CCs maintain direct connections with oocytes through transzonal projections (TZPs) and support oocyte growth. Here, we examined whether granulosa cells (GCs) from secondary follicles and MGCs from early and late antral follicles were able to reconstruct complexes with TZP-free denuded oocytes (DOs) and regenerate TZPs.

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The toxicity of polycavernoside E and its structurally related macrolides, akunolides A, B, and C, was evaluated in mice. These compounds were recently isolated from the marine cyanobacterium Okeania sp. collected in Okinawa, Japan.

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Triantaspirols A-C and Paraphaeolactone Cs from sp. KT4192: Sensitivity of CP3 in Distinguishing Close NMR Signals.

J Nat Prod

October 2024

The United Graduate School of Agricultural Science, Iwate University, 18-8 Ueda 3 chome, Morioka, Iwate 020-8550, Japan.

Hybridized spirobisnaphthalene derivatives, triantaspirols A-C (-) and paraphaeolactones C1 and C2 ( and ), were identified from the culture broth of the fungus sp. KT4192. The NMR spectra of and , as well as and , closely resembled each other, indicating that these were pairs of diastereomers.

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Elevated levels of cyclophilin A secreted in milk during bovine mastitis.

J Dairy Sci

January 2025

International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, 980-8572, Japan; Laboratory of Animal Functional Morphology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, 980-8572, Japan; The Cattle Museum, Maesawa, Oshu, Iwate, 029-4205, Japan. Electronic address:

Bovine mastitis is an inflammatory disease that primarily occurs when bacteria invade and proliferate in the mammary gland, although it can also be caused by physical trauma. Mastitis results in a decrease in milk yield and quality, causing huge economic losses. Cyclophilin A (CyPA) is a cytosolic protein known as cyclosporine binding protein.

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Gene expression levels in cumulus cells are correlated with developmental competence of bovine oocytes.

Theriogenology

January 2025

University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi, 321-4415, Japan; Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, 183-8509, Japan. Electronic address:

Article Synopsis
  • * Researchers compared COCs that successfully developed to blastocysts with those that did not, measuring the levels of several key genes associated with embryo development.
  • * Findings showed that higher levels of specific receptors (FSHR, IGF-1R, AMH, EGFR) and lower levels of apoptosis-related genes (Bax, Caspase-3) in cumulus cells correlate with better developmental competence of oocytes, suggesting gene expression analysis could help predict embryo viability.
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Ptychographic phase retrieval via a deep-learning-assisted iterative algorithm.

J Appl Crystallogr

October 2024

International Center for Synchrotron Radiation Innovation Smart, Tohoku University, 468-1 Aoba-ku, Sendai, Japan.

Article Synopsis
  • Ptychography is a computational imaging technique that provides detailed microscopic images, relying on phase-retrieval algorithms for quality results.
  • Recent advancements have integrated deep neural networks (DNN) into phase retrieval processes to enhance imaging quality, although challenges arise from these methods being sensitive to experimental changes and the need for extensive image datasets for training.
  • A novel approach combines DNN and model-based algorithms, using a DNN denoiser with synthetic training data, which allows for improved image reconstruction with fewer iterations and greater adaptability to varying conditions, as validated by experimental results.
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Mild histological distortions in rat organs after a 14-day oral exposure to the slime extract of African giant land snails.

Toxicol Rep

December 2024

Department of Biochemistry, Medicinal Biochemistry, Nanomedicine & Toxicology Laboratory, Bowen University, PMB 232, Iwo 232101, Nigeria.

Article Synopsis
  • The study investigates the safety and toxicity of snail slime by following OECD 425 guidelines, focusing on its acute toxicity effects in Wistar rats.
  • Eighteen rats were divided into control and treatment groups, receiving either 2000 mg/kg or 5000 mg/kg of the slime extract, and observed over 14 days for behavioral changes and organ health.
  • Results showed no deaths or significant behavioral changes, but mild cellular distortions in vital organs were noted, indicating that while the slime extract is relatively low toxic, further research is necessary before using it in traditional medicine.
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Development of an intestinal epithelial cell line and organoids derived from the same swine and characterization of their antiviral responses.

Biosci Microbiota Food Health

May 2024

Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidoriamamiyamachi, Aoba-ku, Sendai 981-8555, Japan.

Article Synopsis
  • - The study created intestinal epithelial cell lines and organoids from swine jejunal crypts to better understand intestinal health and immune responses.
  • - Researchers tested how these systems respond to viral infection by exposing them to a TLR3 agonist, finding that type I interferon responses were similar, but interferon-stimulated gene expression varied significantly.
  • - This work emphasizes the complexity of immune responses in the intestines and the importance of using diverse evaluation systems to study viral effects and intestinal integrity.
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Serum TNFα and IL-17A levels may predict increased depressive symptoms: findings from the Shika Study cohort project in Japan.

Biopsychosoc Med

October 2024

Department of Hygiene and Public Health, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-Machi, Kanazawa, 920-8641, Japan.

Background: Low-grade systemic inflammation may be a key player in the immune activation that has been reported for mental health deterioration. We hypothesised that elevated serum levels of inflammatory cytokines increase neuroinflammation and exacerbate depressive symptoms.

Methods: The participants were part of a cohort study for whom data was available for both 2015 and 2019.

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Biogas digestive effluent (BDE) has been applied to rice fields in the Vietnamese Mekong Delta (VMD). However, limited information is available on the community composition and isolation of methanotrophs in these fields. Therefore, the present study aimed (i) to clarify the responses of the methanotrophic community in paddy fields fertilized with BDE or synthetic fertilizer (SF) and (ii) to isolate methanotrophs from these fields.

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Establishment of appropriate conditions for the efficient determination of multiple mycotoxins in tea samples and assessment of their drinking risks.

Food Chem

January 2025

Institute of Food Safety and Health Risk Assessment, National Yang Ming Chiao Tung University-Yangming Campus, 155, Sec. 2, Linong Street, Taipei 11221, Taiwan, ROC; Department of Nutrition and Master Program of Food and Drug Safety, China Medical University, 100, Sec. 1, Economic and Trade Road, Taichung 406040, Taiwan, ROC; Department of Food Nutrition and Health Biotechnology, Asia University, 500, Lioufeng Road., Wufeng, Taichung 41354, Taiwan, ROC. Electronic address:

Conditions were determined for rapid, convenient, and efficient determination of 16 common mycotoxins in tea samples. Mycotoxins in tea leaves and tea infusion samples were extracted using solid-liquid extraction/liquid-liquid extraction combined with ultrasonic-assisted extraction. The extraction solvent was 2-butanone/ethyl acetate (9/1 v/v) with 0.

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Seed abortion caused by the combination of two duplicate genes in the progeny from the cross between and .

Breed Sci

April 2024

United Graduate School of Agricultural Sciences, Kagoshima University, 1-21-24 Korimoto, Kagoshima, Kagoshima 890-0065, Japan.

Article Synopsis
  • Seed development is crucial for sexual reproductive plants, and specific alleles at certain loci are necessary for proper seed development.
  • The study focused on fine mapping of a gene related to seed development, narrowing it down to a 333kb region on chromosome 6 and indicating a shared common abortive allele among specific accessions.
  • Further linkage analysis identified a candidate gene on chromosome 4, revealing five potential protein-coding genes that could be linked to seed development, suggesting their orthologs may also play a role in related species.
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This study aimed to investigate the effects of the cell-free supernatant of ATCC 10241 on the biofilm-forming capacity of strains isolated from cystic fibrosis (CF) patients. In addition, the study evaluated the potential of the cell-free supernatant to modulate inflammation and reduce lung damage in mice infected with strains or co-challenged with and the group (SMG). The results showed that CF-derived strains can infect the respiratory tract of adult mice, inducing local inflammation and lung damage.

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This study investigates the forces exerted on organs during swallowing, specifically focusing on identifying forces other than those resulting from direct organ contact. Using a swallowing simulator based on the moving particle method, we simulated the swallowing process of healthy individuals upon the ingestion of thickened foods, which were simulated as shear-thinning flow without yield stress. We extracted the resultant force vectors acting on the organs and shape of the bolus at each time interval.

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Long-chain fatty acid (LCFA) degradation primarily involves several species of and hydrogenotrophic methanogens, constituting the rate-limiting step in anaerobic digestion. It is crucial to augment their abundance to enhance LCFA degradation. Utilizing microbial carriers presents an effective strategy to maintain the microorganisms on the surface and prevent their washout from the digester.

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