Publications by authors named "Kageyama Y"

The assembly of biological systems forms nonequilibrium patterns with different functionalities through molecular-level communication via stepwise sequential interaction and activation. The mimicking of this molecular signaling offers extensive opportunities to design self-assemblies of bioinspired synthetic nonequilibrium systems to develop molecular robots with active, adaptive, and autonomous behavior. Herein, the design and construction of biomolecular motor system, microtubule (MT)-kinesin based molecular swarm system, are reported through stepwise sequential interactions of DNA.

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Introduction: There is evidence for the anticancer effects of l-arginine (arginine); however, the direct effects on cancer cells and mechanism of action are unclear.

Methods: Various upper gastrointestinal cancer cells (OE19, OE33, MKN1, MKN45, MKN74, and AGS) were divided into arginine-treated and -untreated groups and cultured using two-dimensional and three-dimensional culture systems. Proliferation was evaluated using the MTT assay to identify arginine-sensitive (OE33) and arginine-insensitive (OE19) strains.

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In classical cell culture techniques, cancer cells typically proliferate in a single layer by adhering to the undersurface of laboratory vessels. Consequently, concerns have been raised regarding the fidelity of the morphological and functional characteristics of these cultured cancer cells compared to those of their counterparts. Our previous studies have investigated various epithelial malignant tumors utilizing the Tissueoid cell culture system, a three-dimensional (3D) cultivation method employing Cellbed-a nonwoven sheet composed of high-purity silica fibers as a scaffold.

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Direct compression of the oculomotor nerve (OcN) is usually accompanied by OcN palsy (OcNP), with an abnormal pupillary function. We herein present the case of a 76-year-old man with pupil-sparing paresis of the right inferior rectus muscle. A radiological examination revealed an epidermoid cyst at the right cerebellopontine angle, which came in contact with the right oculomotor nerve.

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This paper proposes a projection system that optically removes the cast shadow in projection mapping. Specifically, we realize the large-aperture (LA) projection using a large-format Fresnel lens to suppress cast shadows by condensing the projection light from a wide viewing angle. However, the resolution and contrast of the projected results are significantly degraded by defocus blur, veiling glare, and stray light caused by the aberration of an LA Fresnel lens.

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Article Synopsis
  • A 23-year-old woman had a long history of fungal infections and started having headaches, leading doctors to analyze her cerebrospinal fluid (CSF), which showed a lot of immune cells.
  • They found a fungus called Candida albicans in her CSF, which caused a type of brain infection called Candida meningitis, and gave her antifungal medication.
  • Unfortunately, she didn't get better and suffered complications, leading to her death, and doctors later found out she had a rare genetic issue known as CARD9 deficiency, which can cause immune problems.
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  • - Autosomal recessive CARD9 deficiency is linked to fungal diseases, as seen in two Japanese patients experiencing Candida albicans infections who carried specific CARD9 genetic variants.
  • - All five patients, including previously reported cases from Japan and Korea, shared a particular CARD9 variant (c.820dup), suggesting a common ancestry from less than 4,000 years ago.
  • - While the Chinese patients frequently had phaeohyphomycosis from Phialophora spp., this was not observed in the Japanese and Korean patients, indicating that environmental factors might play a role in disease variation.
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Background/aim: Pembrolizumab, a second-line therapy for platinum-refractory advanced urothelial carcinoma (UC), is needed to improve objective response rate. Hence, it is crucial to identify optimal predictive biomarkers of responses. This study aimed to clarify the predictive value and role of signal transducer and activator of transcription 3 (STAT3) in selecting patients with advanced UC who might benefit clinically from pembrolizumab therapy.

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Introduction: The efficacy of olaparib for treatment-related neuroendocrine prostate cancer is unknown. Here, we report a case of treatment-related neuroendocrine prostate cancer with a mutation that was treated with olaparib with 1-year efficacy.

Case Presentation: A 75-year-old man initially diagnosed with prostate adenocarcinoma developed treatment-related neuroendocrine prostate cancer after 10-year androgen deprivation therapy.

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  • Diabetic retinopathy (DR) is a major cause of vision loss linked to diabetes, prompting a study on the protective effects of pemafibrate in a type 2 diabetes rat model.
  • The study involved administering pemafibrate to a group of obese diabetic rats while monitoring their retinal function and health through various examinations, including electroretinography.
  • Results indicated that pemafibrate reduced triglycerides and increased good cholesterol, showing improved retinal thickness and larger AQP4-positive areas, suggesting it may help protect against DR.
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In the pathogenesis of Alzheimer's disease (AD), highly neurotoxic amyloid-β (Aβ) oligomers appear early, they are thus considered to be deeply involved in the onset of Alzheimer's disease. However, Aβ oligomer visualization is challenging in human tissues due to their multiple forms (e.g.

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Dynamic Projection Mapping (DPM) necessitates geometric compensation of the projection image based on the position and orientation of moving objects. Additionally, the projector's shallow depth of field results in pronounced defocus blur even with minimal object movement. Achieving delay-free DPM with high image quality requires real-time implementation of geometric compensation and projector deblurring.

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  • Hematopoietic stem cells (HSCs) can regenerate blood cells, but the specific signals that guide them in this process after injury are not well understood.
  • During anemia, HSCs take up more iron, which activates genes related to red blood cell production through a mechanism involving the Tet2 protein.
  • The study found that HSCs in the spleen increase their numbers and activity in response to anemia, highlighting the critical role of iron in enabling these cells to differentiate into red blood cells.
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The first total synthesis of (-)-merrillianin (), which is a natural sesquiterpene with a tricyclic structure having a cyclopentane ring and five- and seven-membered lactone parts, is demonstrated. This asymmetric total synthesis enabled the absolute stereostructure determination of naturally occurring (-)-.

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Antipsychotics are frequently used to treat psychiatric disorders and have been associated with weight gain. Mental disorders are likely to reduce patients' quality of life. Unhealthy lifestyles such as reduced physical activity, sleep disturbances, and irregular diets can lead to weight gain.

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Background & Aims: Levels of circulating amino acids (AAs) have been suggested to be associated with cardiovascular diseases (CVDs). This study aimed to develop a plasma-free amino acid (PFAA)-based CVD risk-prediction model in a general population.

Methods: The study participants consisted of 9220 community residents (mean age, 53.

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  • After 8 cycles of treatment, she achieved a complete response, leading to maintenance therapy with atezolizumab.
  • Despite initial recovery, her platelet count decreased, prompting a diagnosis of immune thrombocytopenia, for which she was successfully treated with prednisolone.
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Introduction: Aging, an inevitable physiological process, leads to morphological and histological degenerative changes in the mandibular condylar cartilage (MCC); however, the molecular mechanism has not yet been elucidated, and little information is available on age-related factors. Therefore, this study was designed to identify age-related factors by investigating the age-related differentially expressed genes (DEGs) and localization of their translated protein expression in the mandibular condyle.

Methods: Mandibular condyles were collected from 10- and 50-week-old mice.

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This prospective observational study will evaluate the change in heart rate (HR) during the periprocedural course of carotid artery stenting (CAS) via continuous monitoring using a wearable device. The participants were recruited from our outpatient clinic between April 2020 and March 2023. They were instructed to continuously wear the device from the last outpatient visit before admission to the first outpatient visit after discharge.

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  • * Low hemoglobin levels and a high platelet-to-lymphocyte ratio (PLR) have been linked to worse overall survival in UC patients who didn't benefit from pembrolizumab.
  • * The study suggests that targeting STAT3 and detecting PDGF-DD in tumors could help improve treatment strategies and pinpoint patients who might respond better to combination therapies.
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Background: MicroRNAs (miRNAs) and circulating cell-free mitochondrial DNA (ccf-mtDNA) have attracted interest as biological markers of affective disorders. In response to stress, it is known that miRNAs in mitochondria diffuse out of the cytoplasm alongside mtDNA; however, this process has not yet been identified. We hypothesized that miRNAs derived from specific cell nuclei cause mitochondrial damage and mtDNA fragmentation under MDD-associated stress conditions.

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  • Chronic inflammation is significant in proliferative diabetic retinopathy (PDR), with retinal glial cells undergoing biological changes, particularly regarding the phosphorylation of αB-crystallin (CRYAB) that affects its function and secretion.
  • The study utilized human retinal Müller cells (MIO-M1) and assessed gene/protein expressions through techniques like real-time quantitative PCR and ELISA, while also examining cell apoptosis through specific assays.
  • Findings revealed that IL-1β reduces CRYAB mRNA in MIO-M1 cells but not the protein, and phosphorylation of serine 59 (Ser59) of αB-crystallin occurs, indicating αB-crystallin has
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