Publications by authors named "Watanabe N"

Curcumin is widely used as a therapeutic drug for cancer treatment. However, its limited absorption and rapid excretion are the major therapeutic limitations to its clinical use. Using niosomes as a curcumin delivery system is a cheap, easy, and less toxic strategy for enhancing the absorption of curcumin by cells and delaying its excretion.

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  • β-TrCP is a specific protein involved in the ubiquitin-ligase complex that helps target proteins for degradation, which is important for regulating various cellular processes.
  • Researchers developed a high-throughput screening system to find small molecules that can specifically inhibit β-TrCP, leading to the identification of several compounds that affect the ubiquitin-proteasome system.
  • The hit compounds not only inhibited the degradation of specific proteins like IκBα but also revealed key molecular features like carboxyl and hydroxyl groups that interact with β-TrCP, contributing to potential therapeutic applications in regulating cellular signaling.
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  • * A screening of 5,600 microbial extracts led to the discovery of a broth from sp. RK19-A0402 that significantly inhibits c-Myc transcriptional activity and is structurally related to oligomycin A.
  • * The identified compounds cause mitochondrial dysfunction, resulting in reactive oxygen species (ROS) production that activates GSK3α/β to phosphorylate c-Myc for degradation, suggesting a potential approach for developing anticancer agents.
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Trastuzumab deruxtecan (T-DXd, DS-8201a) is an antibody-drug conjugate, comprising an anti-HER2 antibody at a drug-to-antibody ratio of 7-8 with the topoisomerase I inhibitor DXd. In this study, the concentrations of antibody-conjugated DXd and total antibody were determined and observed to decrease over time following intravenous administration of T-DXd to monkeys. The drug-to-antibody ratio of T-DXd also decreased in a time-dependent manner, which reached approximately 2.

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Background And Objective: Fc fusion is an effective strategy for extending the half-lives of therapeutic proteins. This study aimed to evaluate the applicability of a human pharmacokinetics prediction method for Fc-fusion proteins by extending on reported methods for monoclonal antibodies (mAbs).

Methods: To predict human pharmacokinetic profiles following intravenous (IV) dosing, the pharmacokinetic data for 11 Fc-fusion proteins in monkeys were analysed by two approaches: a species-invariant time method with a range of allometric exponents in clearance (CL, 0.

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  • - Knee rotationplasty (KRP) is a surgery option for patients with malignant tumors near the knee, aimed at preserving knee function instead of opting for above-knee amputation.
  • - A case study of a 37-year-old man with synovial sarcoma showed that after KRP, muscle strength in the reconstructed knee improved over 12 months, along with physical function and quality of life.
  • - The patient started physical therapy immediately after surgery, leading to gradual improvements in mobility and daily activities, highlighting the benefits of KRP for post-surgical recovery.
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  • c-Myc is an important regulator of cell growth and its overexpression is linked to many cancers, making it a target for potential therapies.
  • Researchers have faced challenges in developing specific inhibitors for c-Myc, so they instead focused on small molecules that affect its cofactors or repressors.
  • A study identified antimycin A as a promising compound that enhances c-Myc degradation via ROS, linking its effectiveness to c-Myc levels in cancer cells and suggesting a new direction for cancer treatment.
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Introduction: Intraoperative periprosthetic fracture, one of the most frequent complications of total hip arthroplasty, is a very important factor that affects rehabilitation, hospitalization time, and cost of treatment. Osteoporosis is common in total hip arthroplasty patients and likely contributes to the increasing incidence of periprosthetic fracture. Despite this awareness, preoperative and postoperative osteoporosis evaluations remain insufficient.

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Alzheimer's disease (AD) is the most prevalent type of dementia globally. The accumulation of amyloid-beta (Aβ) extracellular senile plaques in the brain is one of the hallmark mechanisms found in AD. Aβ42 is the most damaging and aggressively aggregating Aβ isomer produced in the brain.

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Satellite cells are indispensable for skeletal muscle regeneration and hypertrophy by forming nascent myofibers (myotubes). They synthesize multi-potent modulator netrins (secreted subtypes: netrin-1, -3, and -4), originally found as classical neural axon guidance molecules. While netrin-1 and -3 have key roles in myogenic differentiation, the physiological significance of netrin-4 is still unclear.

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Wild-derived mouse strains have been extensively used in biomedical research because of the high level of inter-strain polymorphisms and phenotypic variations. However, they often show poor reproductive performance and are difficult to maintain by conventional in vitro fertilization and embryo transfer. In this study, we examined the technical feasibility of derivation of nuclear transfer embryonic stem cells (ntESCs) from wild-derived mouse strains for their safe genetic preservation.

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Background: There has been no meta-analysis of whether percutaneous coronary intervention (PCI) with optimal medical therapy (OMT) improves health-related quality of life (HRQL) compared with OMT alone in patients with stable ischemic heart disease (SIHD).

Methods: We searched MEDLINE, Cochrane Central Registry of Controlled Trials, Embase, ClinicalTrials.gov, and International Clinical Trials Registry Platform in November 2022.

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Alzheimer's disease (AD) is the most common neurodegenerative condition in civilizations worldwide. The distinctive occurrence of amyloid-beta (Aβ) accumulation into insoluble fibrils is part of the disease pathophysiology with Aβ42 being the most toxic and aggressive Aβ species. The polyphenol, p-Coumaric acid (pCA), has been known to boost a number of therapeutic benefits.

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Sjogren's syndrome is an autoimmune disease in middle and old-aged women with a dry mucosal surface, which is caused by the dysfunction of secretory glands, such as the oral cavity, eyeballs, and pharynx. Pathologically, Sjogren's syndrome are characterized by lymphocyte infiltration into the exocrine glands and epithelial cell destruction caused by autoantibodies Ro/SSA and La/SSB. At present, the exact pathogenesis of Sjogren's syndrome is unclear.

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The number of unannotated protein sequences is explosively increasing due to genome sequence technology. A more comprehensive understanding of protein functions for protein annotation requires the discovery of new features that cannot be captured from conventional methods. Deep learning can extract important features from input data and predict protein functions based on the features.

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Omics data was acquired, and the development and research of metabolic simulation and analysis methods using them were also actively carried out. However, it was a laborious task to acquire such data each time the medium composition, culture conditions, and target organism changed. Therefore, in this study, we aimed to extract and estimate important variables and necessary numbers for predicting metabolic flux distribution as the state of cell metabolism by flux sampling using a genome-scale metabolic model (GSM) and its analysis.

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  • Niemann-Pick disease type C1 (NPC1) is a serious genetic disorder that causes progressive nerve cell damage, and its exact causes are not well understood.
  • Research shows that transplanting bone marrow-derived cells in NPC1 mice can help reduce damage to specific brain cells (Purkinje cells) and that lymphocytes in the immune system may have a protective effect against the disease.
  • The study highlights the importance of different immune cell types, with CD4-positive regulatory T cells showing potential to improve symptoms, while inflammatory monocytes might worsen cell degeneration in NPC1.
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A systematic mechanistic survey was performed for the CHOH + OH reaction on ice. ONIOM(ωB97X-D/Def2-TZVP:AMOEBA09) calculations suggested a range of binding energies for the CHOH radical (0.29-0.

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Key Clinical Message: Undiagnosed female megalourethra can be a cause of iatrogenic bladder foreign body.

Abstract: Foreign bodies in the urinary bladder are relatively rare. Female megalourethra is an extremely rare congenital disorder which is usually associated with Müllerian anomalies.

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Background: Diabetic retinopathy (DR) remains a major cause of sight loss worldwide, despite new therapies and improvements in the metabolic control of people living with diabetes. Therefore, DR creates a physical and psychological burden for people, and an economic burden for society. Preventing the development and progression of DR, or avoiding the occurrence of its sight-threatening complications is essential, and must be pursued to save sight.

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Background: The infraportal type of the right posterior bile duct (infraportal RPBD) is a well-known anatomical variation that increases the potential risk of intraoperative biliary injury. The aim of this study is to clarify the clinical value of fluorescent cholangiography during single-incision laparoscopic cholecystectomy (SILC) for patients with infraportal RPBD.

Material And Methods: Our procedure for SILC utilized the SILS-Port, and another 5-mm forceps was inserted an umbilical incision.

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The present study aimed to establish new reference intervals (RIs) for serum free triiodothyronine (fT3), free thyroxine (fT4), and thyroid stimulating hormone (TSH) levels in Japanese children and adolescents aged 4 to 19 years. A total of 2,036 (1,611 girls, 425 boys) participants were included over a 17-year period; they all tested negative for antithyroid antibodies (TgAb, TPOAb) and were found to have no abnormalities on ultrasonography. RIs were determined by nonparametric methods.

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The elevated level of interferon-γ (IFN-γ) in Sjogren's syndrome (SS) triggers salivary gland epithelial cells (SGEC) death. However, the underlying mechanisms of IFN-γ-induced SGEC death modes are still not fully elucidated. We found that IFN-γ triggers SGEC ferroptosis via Janus kinase/signal transducer and activator of transcription 1 (JAK/STAT1)-mediated inhibition of cystine-glutamate exchanger (System Xc).

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IgE antibodies are likely involved in host protection. is a helminth that induces protection through IgE antibodies. The present study examined susceptibility in high and low IgE responder mice, with a specific focus on the inheritance of IgE responsiveness, which controls IgE production specific for the IgE isotype and non-specific for antigens.

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