Publications by authors named "Iwashita M"

Neural stem cells (NSCs) can give rise to both neurons and glia, but the regulatory mechanisms governing their differentiation transitions remain incompletely understood. Here, we address the role of cyclin-dependent kinase inhibitors (CDKIs) in the later stages of dorsal cortical development. We find that the CDKIs p18 and p27 are upregulated at the onset of astrocyte generation.

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Carnitine O-octanoyltransferase (CROT) is a well-established peroxisomal enzyme involved in liver fatty acid oxidation, but less is known about its recently discovered role in promoting vascular calcification, and whether CROT-dependent liver metabolism contributes to the latter. To date, CROT function in the context of calcification potential has been conducted in the dyslipidemic low-density lipoprotein receptor-deficient () mice. To differentiate peroxisome and CROT-dependent lipid biology from that of lipoprotein-mediated lipid biology, we therefore conducted a metabolomic analysis of the liver and plasma of normolipidemic CROT-deficient () mice.

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Background: Cognitive behavioral therapy for insomnia (CBT-I) is among the recommended non-pharmacological treatments for patients with insomnia. While there are multiple reports on the effects of CBT-I treatment, few studies evaluating the factors associated with the treatment response to CBT-I have been reported. The present study aimed to confirm the effects of CBT-I in patients with insomnia and to examine the clinico-demographic factors that can predict the outcomes of CBT-I in these patients.

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Background: Takotsubo cardiomyopathy (TC) is a well-known complication of subarachnoid haemorrhage (SAH), often accompanied by neurogenic myocardial dysfunction. Although TC has been reported to be associated with higher morbidity and mortality among patients with aneurysmal SAH (aSAH), some patients have been reported to recover, the profiles and follow-up outcomes of these survivors remain unclear.

Materials And Methods: To characterize the profiles of patients with aSAH complicated by TC who experienced favourable outcomes using long-term follow-up data, a consecutive series of patients with aSAH were enrolled and TC diagnosis was based on the revised version of the Mayo Clinic criteria.

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Background And Purpose: Carotid artery stenosis or occlusion (CASO) is a causative disease of vascular cognitive impairment (VCI) attributed to cerebral hypoperfusion, even without the development of symptomatic ischemic stroke. Preclinically, resveratrol has been demonstrated to play an important role in improving cognitive function in rodent CASO models. This study investigated the association between long-term resveratrol intake and improvements in cognitive and cerebral hemodynamic impairments in patients with CASO.

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Aim: The present study evaluated the therapeutic effects of luteolin in alleviating pulpitis of dental pulp- (DP-) derived microvesicles (MVs) via the inhibition of protein kinase R- (PKR-) mediated inflammation. . Proteomic analysis of immortalized human dental pulp (DP-1) cell-derived MVs was performed to identify PKR-associated molecules.

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Leucine (Leu), an essential amino acid, is known to stimulate protein synthesis in the skeletal muscle via mTOR complex 1 (mTORC1) activation. However, the intrinsic contribution of other amino acids to Leu-mediated activation of mTORC1 signaling remains unexplored. This study aimed to identify amino acids that can promote mTORC1 activity in combination with Leu and to assess the effectiveness of these combinations in vitro and in vivo.

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An 86-year-old man presented to our hospital with symptoms of diarrhea and bloody stool, which had manifested two weeks after receiving his third severe acute respiratory syndrome coronavirus 2 mRNA vaccination. Colonoscopy revealed diffuse, rough-surfaced mucosa extending from the ascending colon to the rectum. Despite attempting probiotic treatment, the patient's condition did not improve, leading to admission.

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  • * The research highlights how SPOCK-1, an important protein, contributes to gum thickening by promoting changes in gum cell behavior while also examining its role alongside inflammation and cyclosporin-A (CsA) in enhancing DIGO in mouse models.
  • * Findings indicate that Spock1-Tg mice, which overexpress SPOCK-1, experienced greater gingival overgrowth and bone loss when treated with CsA, suggesting that increased collagen production and inflammation play a significant part in the development of DIGO in this context.
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Background: Social affinity and collective behavior are nearly ubiquitous in the animal kingdom, but many lineages feature evolutionarily asocial species. These solitary species may have evolved to conserve energy in food-sparse environments. However, the mechanism by which metabolic shifts regulate social affinity is not well investigated.

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  • - The study conducted by the Yokohama Medical Control Council aimed to evaluate the safety and effectiveness of prehospital CPAP therapy for patients with severe respiratory failure, despite Japanese laws restricting paramedics from administering this treatment.
  • - From October 2020 to January 2022, 661 Doctor Car dispatches occurred, with CPAP administered to only 13 patients due to COVID-19 concerns; however, significant improvements in oxygen saturation levels were observed post-treatment.
  • - This research represents the first prospective observational study on prehospital CPAP administration in Japan, showing no worsening in patient conditions after treatment, primarily for heart failure-related respiratory distress.
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Introduction: With category II fetal heart rate tracings, the preferred timing of interventions to prevent fetal hypoxic brain damage while limiting operative interventions remains unclear. We aimed to estimate fetal extracellular base deficit (BD ) during labor with category II tracings to quantify the timing of potential interventions to prevent severe fetal metabolic acidemia.

Material And Methods: A longitudinal study was conducted using the database of the Recurrence Prevention Committee, Japan Obstetric Compensation System for Cerebral Palsy, including infants with severe cerebral palsy born at ≥34 weeks' gestation between 2009 and 2014.

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Periodontitis, a major inflammatory disease of the oral cavity that can cause low-grade systemic inflammation, has been suggested to influence the development of comorbidities. Multiple systemic inflammatory mechanisms are common in the development of periodontal disease and atherosclerosis. Observational studies conducted worldwide have reported that periodontal disease may independently influence the progression of atherosclerotic disease.

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Epidemiological studies suggest that the severity of periodontitis is higher in people with diabetes than in healthy individuals. Insulin resistance might play a crucial role in the pathogenesis of multiple diabetic complications and is reportedly induced in the gingiva of rodents with type 2 diabetes; however, the molecular mechanisms underlying the pathogenesis of diabetes-related periodontitis remain unclear. Therefore, we aimed to investigate whether endothelial insulin resistance in the gingiva may contribute to the pathogenesis of periodontitis as well as elucidate its underlying molecular mechanisms.

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Although nobiletin (Nob) is a promising functional food component in view of its multifaceted physiological activity, the metabolism of this flavonoid remains underexplored. Herein, we examine the pharmacokinetics and tissue distribution of orally ingested Nob in rats, focusing on the six monodemethylnobiletin (MDNob) isomers as the main Nob metabolites. Two of these metabolites, namely, 6-MDNob and 8-MDNob, are chemically prepared for the first time, and a method for the simultaneous determination of all six MDNobs is developed.

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Background: Subarachnoid hemorrhage and thyroid storm are similar in their clinical symptomatology, and diagnosis of these conditions, when they occur simultaneously, is difficult. Here, we report a rare case of concurrent subarachnoid hemorrhage and thyroid storm we encountered at our hospital.

Case Presentation: The patient was a 52-year-old woman.

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  • The study investigates the impact of L-arginine bioavailability on long-term outcomes in patients with a history of coronary angiography.
  • Serum levels of L-arginine, L-citrulline, and L-ornithine were analyzed to explore their relationship with overall and cardiovascular-related deaths.
  • Results indicated that a lower L-arginine/L-ornithine ratio was linked to higher incidences of all-cause death, cardiovascular death, and major adverse cardiovascular events over a 10-year observation period.
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Unlabelled: Recently, addiction to regular doses of hypnotics has become a problem. While many patients report a desire to reduce their dosage, many do not agree with their physicians' suggestions for reduction. In this study, we created an online short video targeting patient motivation to reduce hypnotics usage and examined its efficacy and factors associated with the intention to reduce medication.

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A well-tuned inflammatory response is crucial for an effective immune process. Nuclear factor-kappa B (NF-κB) is a key mediator of inflammatory and innate immunity responses, and its dysregulation is closely associated with immune-related diseases. MicroRNAs (miRNAs) are important inflammation modulators.

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Background: Laterality in relation to behavior and sensory systems is found commonly in a variety of animal taxa. Despite the advantages conferred by laterality (e.g.

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The expression profiles of exosomal microRNAs (miRNAs) are regulated by the microenvironment, and appropriate priming with mesenchymal stem cells (MSCs) is one of the strategies to enhance the paracrine potency of MSCs. Our previous work demonstrated that exosomes from tumor necrosis factor (TNF)-α-primed human gingiva-derived MSCs (GMSCs) could be a therapeutic tool against periodontitis, and that TNFα-inducible exosomal miR-1260b is essential for the inhibition of alveolar bone loss. However, the precise molecular mechanism underlying miR-1260b-mediated inhibition of osteoclastogenesis is not yet fully understood.

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  • Cerebral palsy is more common in preterm infants, and while fetal heart rate monitoring doesn't directly decrease its incidence, it can help determine the timing of brain injuries related to delivery and assist in developing preventative strategies.
  • The study aimed to analyze how the timing of brain injuries correlates with their types in severe cases of cerebral palsy in preterm infants, specifically those born between 2009 and 2014 at 28 to 33 weeks gestation.
  • Researchers used a nationwide database and evaluated fetal heart rate patterns and brain MRI findings to categorize injuries, with analyses performed by blind reviewers to ensure objectivity. *
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Periodontal tissue supports teeth in the alveolar bone socket via fibrous attachment of the periodontal ligament (PDL). The PDL contains periodontal fibroblasts and stem/progenitor cells, collectively known as PDL cells (PDLCs), on top of osteoblasts and cementoblasts on the surface of alveolar bone and cementum, respectively. However, the characteristics and lineage hierarchy of each cell type remain poorly defined.

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  • Nitric oxide (NO) plays a crucial role in maintaining blood vessel health, and its derivatives (NOx levels) were studied as potential indicators of NO production in patients after coronary catheterization.
  • In a follow-up of 143 patients over approximately 6.13 years, researchers found that higher levels of NOx were associated with increased risk of death from any cause and heart failure.
  • The study concluded that elevated serum NOx levels indicate a higher risk of mortality and heart failure, suggesting that they are important clinical markers rather than benign signs.
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