1,456 results match your criteria: "Japan T.K.; and Fraunhofer Institute for Toxicology and Experimental Medicine[Affiliation]"

SETDB1 suppresses NK cell-mediated immunosurveillance in acute myeloid leukemia with granulo-monocytic differentiation.

Cell Rep

August 2024

Division of Molecular Oncology, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo 108-8639, Japan. Electronic address:

Monocytic acute myeloid leukemia (AML) responds poorly to current treatments, including venetoclax-based therapy. We conducted in vivo and in vitro CRISPR-Cas9 library screenings using a mouse monocytic AML model and identified SETDB1 and its binding partners (ATF7IP and TRIM33) as crucial tumor promoters in vivo. The growth-inhibitory effect of Setdb1 depletion in vivo is dependent mainly on natural killer (NK) cell-mediated cytotoxicity.

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Purpose: The diagnostic performance of large language artificial intelligence (AI) models when utilizing radiological images has yet to be investigated. We employed Claude 3 Opus (released on March 4, 2024) and Claude 3.5 Sonnet (released on June 21, 2024) to investigate their diagnostic performances in response to the Radiology's Diagnosis Please quiz questions.

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Elevated triglyceride levels are associated with an increased risk of cardiovascular events despite guideline-based statin treatment of low-density lipoprotein cholesterol. Peroxisome proliferator-activated receptor α (PPARα) agonists exert a significant triglyceride-lowering effect. However, combination therapy of PPARα agonists with statins poses an increased risk of rhabdomyolysis, which is rare but a major concern of the combination therapy.

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The aims of this study were as follows: the (a) creation of a pregnant occupant finite element model based on pregnant uterine data from sonography, (b) development of the evaluation method for placental abruption using this model and (c) analysis of the effects of three factors (collision speed, seatbelt position and placental position) on the severity of placental abruption in simulations of vehicle collisions. The 30-week pregnant occupant model was developed with the uterine model including the placenta, uterine-placental interface, fetus, amniotic fluid and surrounding ligaments. A method for evaluating the severity of placental abruption on this pregnant model was established, and the effects of these factors on the severity of the injury were analyzed.

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Evidence of γ-secretase complex involved in the regulation of intramembrane proteolysis in Entamoeba histolytica.

Parasitol Int

December 2024

Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

Presenilins (PSNs) are multifunctional membrane proteins involved in signal transduction, lysosomal acidification, and certain physiological processes related to mitochondria. The aspartic protease activity of PSN and the formation of a γ-secretase complex with other subunits such as nicastrin (NCT) are required for the biological functions. Although PSN is widely conserved in eukaryotes, most studies on PSN were conducted in metazoans.

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Article Synopsis
  • * Recent studies have raised concerns about this 12-month regimen, suggesting adjustments based on patients' bleeding or ischemic risks, arguing some may benefit from shorter or longer durations.
  • * Several strategies to modify DAPT practices, such as de-escalating to less potent medications or shortening therapy, have shown to reduce bleeding risks without significantly increasing cardiovascular issues, yet the 12-month recommendation remains unchanged in guidelines.
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X-linked hypophosphatemia (XLH) is a genetic disease that results in excessive FGF23, chronic hypophosphatemia, and musculoskeletal abnormalities, with affected patients experiencing symptoms such as bone pain, bone deformity, fracture, and pseudofracture. Burosumab is a fully human monoclonal antibody that binds to FGF23, improving lowered serum 1,25(OH)D and phosphate levels in patients with XLH. There are insufficient data on the use of burosumab, its safety, and the outcomes of treated patients in a real-world setting.

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Objective: To evaluate the efficacy and safety of 24-week cyclic administration of estetrol (E4) (15 mg)/drospirenone (DRSP) (3 mg) in Japanese patients with endometriosis.

Design: A 24-week, multicenter, randomized, double-blind, placebo-controlled, parallel-group study.

Setting: Twenty-five study centers in Japan.

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The emptying rate of specific nutrients in enteral formulas is poorly understood, despite the importance of controlling the emptying rate in tube-fed patients. Because of their viscosity, thickened formulas are widely used to avoid gastric reflux and reduce the burden on caregivers. This study examined how thickeners in enteral formulas affected the gastric emptying rates of proteins and carbohydrates.

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Background: Our search for plant-derived ceramides from sustainable sources led to the discovery of ceramides and glucosylceramides in wine lees.

Objective: This study evaluated the efficacy and safety of wine lees extract (WLE)-derived ceramides and glucosylceramides in enhancing skin barrier function.

Methods: A randomized, double-blind, placebo-controlled study was conducted with 30 healthy Japanese subjects aged 20-64.

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Pleuroparenchymal fibroelastosis (PPFE) is characterized by fibrosis involving the pleura and subpleural lung parenchyma, predominantly in the upper lobes. As PPFE appears to occur in patients with heterogeneous etiologies, the disease course is thus also heterogenous, with some patients showing rapid progression while others have slow progression. Therefore, it is very difficult to predict prognosis with PPFE.

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The Usefulness of Determining Plasma and Tissue Concentrations of Phosphorodiamidate Morpholino Oligonucleotides to Estimate Their Efficacy in Duchenne Muscular Dystrophy Patients.

Drug Metab Dispos

August 2024

Drug Metabolism and Pharmacokinetics Research Department, Discovery Research Laboratories, Kyoto (S.I., R.M., J.M., T.K., T.Y., K.K.) and Discovery Research Laboratory in Tsukuba, Ibaraki (N.W., Y.T.) , Nippon Shinyaku Co., Ltd., Japan.

Currently, four kinds of phosphorodiamidate morpholino oligomers (PMOs), such as viltolarsen, have been approved for the treatment of Duchenne muscular dystrophy (DMD); however, it is unclear whether human efficacy can be estimated using plasma concentrations. This study summarizes the tissue distribution of viltolarsen in mice and cynomolgus monkeys and evaluates the relationship between exposure and efficacy based on exon skipping. In the tissue distribution studies, all muscles in DMD-model mice showed higher concentrations of viltolarsen than those in wild-type mice and cynomolgus monkeys, and the concentrations in skeletal muscle were correlated with the exon-skipping efficiency in mice and cynomolgus monkeys.

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Background: The heart comprises many types of cells such as cardiomyocytes, endothelial cells (ECs), fibroblasts, smooth muscle cells, pericytes, and blood cells. Every cell type responds to various stressors (eg, hemodynamic overload and ischemia) and changes its properties and interrelationships among cells. To date, heart failure research has focused mainly on cardiomyocytes; however, other types of cells and their cell-to-cell interactions might also be important in the pathogenesis of heart failure.

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Background: Chemoimmunotherapy is a standard treatment for advanced non-small-cell lung cancer (NSCLC). However, data on clinical predictive factors remain scarce.

Objective: We aim to identify clinical biomarkers in patients undergoing chemoimmunotherapy.

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Vascular Calcification Is Accelerated by Hyponatremia and Low Osmolality.

Arterioscler Thromb Vasc Biol

September 2024

Departments of Medicine and Clinical Science (M.S., S.Y., K.T., T. Nakano, T.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

Background: Hyponatremia, frequently observed in patients with chronic kidney disease, is associated with increased cardiovascular morbidity and mortality. Hyponatremia or low osmolality induces oxidative stress and cell death, both of which accelerate vascular calcification (VC), a critical phenotype in patients with chronic kidney disease. Whether hyponatremia or low osmolality plays a role in the pathogenesis of VC is unknown.

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Effects of an OX2R agonist on migration and removal of tau from mouse brain.

Sci Rep

July 2024

Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan.

Pathological proteins including tau are produced in neurons and released into interstitial fluid (ISF) in a neural activity-dependent manner during wakefulness. Pathological proteins in ISF can be removed from the brain via the glymphatic pathway during nighttime. Thus, in individuals with Alzheimer's disease (AD) that have dysregulated sleep/wake rhythm, application of orexin receptor 2 (OX2R) agonists during daytime could recover the efflux of pathological proteins to ISF and indirectly promote the glymphatic pathway by improving the quality of nighttime sleep after proper daytime arousal, resulting in increased removal of these proteins from the brain.

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Purpose: To investigate whether inducing valgus alignment and shifting the load laterally through high tibial osteotomy (HTO) alone decreases the extent of medial meniscus extrusion (MME) in the setting of medial meniscus posterior root tear (MMPRT) using ultrasound evaluation.

Methods: Eight fresh-frozen human cadaveric knee specimens were tested using a 6-degree-of-freedom robotic testing system and ultrasound. Each specimen was tested in 5 conditions: (1) intact, (2) MMPRT, (3) medial meniscus repair (MMR), (4) combined medial open-wedge HTO + MMR, and (5) HTO + MMPRT.

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Investigation of Functional Cytochrome P450 4A Enzymes in Liver and Kidney of Pigs, Cats, Tree Shrews, and Dogs in Comparison with the Metabolic Capacity of Human P450 4A11.

Drug Metab Dispos

August 2024

Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima City, Kagoshima, Japan (Y.U., K.T.-K.); Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan (M.I.); Graduate School of Agriculture, Ehime University, Matsuyama, Ehime, Japan (H.M.); and Showa Pharmaceutical University, Machida, Tokyo, Japan (N.M., H.Y.)

Pigs are sometimes used in preclinical drug metabolism studies, with growing interest, and thus their drug-metabolizing enzymes, including the cytochromes P450 (P450 or CYP; EC 1.14.14.

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Diagnostic Utility of Specific Frailty Questionnaire: The Kihon Checklist for Hippocampal Atrophy in COPD.

J Clin Med

June 2024

Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, Yamaguchi 755-8505, Japan.

Article Synopsis
  • COPD patients who are frail may experience brain atrophy, particularly in the hippocampus, but there's currently no non-invasive way to identify this condition.
  • The study involved 40 COPD patients and 20 healthy individuals, using the Kihon Checklist (KCL) to evaluate frailty and analyzing MRI images for hippocampal volumes.
  • Results indicated that COPD patients had smaller hippocampal volumes than healthy individuals, and the KCL showed strong potential as a diagnostic tool for identifying atrophy in these patients, with high specificity and sensitivity rates.
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Background: Psoriatic arthritis (PsA) is characterized by enthesitis. As persistent inflammation around joints results in bone and cartilage destruction and physical impairment, a detailed assessment of inflammation is essential. We previously reported the difference between clinical assessment (tenderness) and ultrasound (US) assessment (inflammation) of entheses.

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