Publications by authors named "Tsutsumi Y"

Visceral disseminated varicella zoster virus (VZV) infection is a severe complication, characterized by a notably high mortality rate. Herein, we present a case of a 36-year-old-man involving visceral disseminated VZV infection that emerged during remission induction therapy involving high-dose prednisolone (PSL), mycophenolate mofetil (MMF), and hydroxychloroquine for lupus nephritis. Two months after starting the immunosuppressive therapy, he experienced a rapid onset of severe upper abdominal pain.

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ApcMin/+ mouse was a model mouse for human familial adenomatous polyposis, and irradiation at an early age increases tumors in the small and large intestine. To study the effects of antioxidant administration on tumor incidence after continuous whole-body exposure to gamma rays, ApcMin/+ mice were exposed to a medium-dose-rate, 200 mGy/d, from postnatal Day 0 to 21 of age or a high-dose-rate of 0.65 Gy/min (total dose 4.

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  • - The study explored how chronic low-dose-rate radiation affects gene expression related to immune defense and epigenetic regulation in male mice's testis.
  • - Results showed that exposure to radiation significantly reduced epigenetic regulation gene expression while increasing genes associated with innate and acquired immunity, indicating a strong impact on immune response.
  • - Additionally, there was a rise in the expression of the SRY-box transcription factor 9, which is vital for testicular development, highlighting the biological consequences of this radiation exposure.
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We have successfully improved the fluorescence quantum yield of isoindolo[2,1-a]quinoline derivatives by suppressing the rotation of the phenyl groups at positions 5 and 11 (or 13). Additionally, we found that the planarity of these phenyl groups at positions 5 and 11 (or 13) of isoindolo[2,1-a]quinoline derivatives is crucial for two-photon absorption properties.

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Given that daily exposure to nanoparticles is now unavoidable, there are concerns that nanoparticles have unexpected biological effects due to their small size. Here, we examined the biodistribution of silver nanoparticles, which are the most frequently used nanoparticles owing to their antibacterial activity, with a diameter of 10 nm (nAg10) to the male genital tract, and the effects of paternal treatment with nAg10 on fetal development. Male Slc:ICR male mice were orally treated with nAg10 for 14 consecutive days.

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: Airway management techniques, including mask ventilation and tracheal intubation, are vital across medical settings. However, these procedures can be challenging, especially when environmental conditions are less than ideal. This study explores how the height of the operating table affects the difficulty of anesthesia techniques involving mask ventilation and tracheal intubation.

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Background: Microplastics (MPs), plastic particles < 5 mm in size, are prevalent in the environment, and human exposure to them is inevitable. To assess the potential risk of MPs on human health, it is essential to consider the physicochemical properties of environmental MPs, including polymer types, size, shape, and surface chemical modifications. Notably, environmental MPs undergo degradation due to external factors such as ultraviolet (UV) rays and waves, leading to changes in their surface characteristics.

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  • Calphostin C (Cal-C) is a known protein kinase C (PKC) inhibitor that can inhibit PKC activation at low concentrations but activate it at high concentrations through a light-dependent mechanism.
  • At low doses (<200 nM), Cal-C successfully stops PKC translocation and activation induced by certain compounds, while at higher doses (>2 μM), it raises intracellular calcium levels by mobilizing the endoplasmic reticulum (ER) without involving specific receptors.
  • The study also found that high concentrations of Cal-C cause structural changes in the ER and generate singlet oxygen, which contributes to PKC activation and indicates its potential use in photodynamic therapy.
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  • An unusual case of Behçet's disease was reported, potentially triggered by surgical intervention, causing a recurrent pseudoaneurysm at the aortic root.
  • This condition led to inflammation of the autograft used in a Ross procedure, complicating the diagnosis, as symptoms mimicked those of infectious endocarditis.
  • Successful treatment involved effective surgical intervention alongside perioperative anti-inflammatory therapy.
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  • Chronic lymphoproliferative disorder of natural killer cells (CLPD-NK) is a rare disease with high NK cell counts that is often asymptomatic, but can lead to symptoms like fatigue, fever, and autoimmune diseases.
  • A 61-year-old male patient diagnosed with CLPD-NK experienced numbness and elevated protein levels in cerebrospinal fluid, indicating potential immunological issues, which were treated with steroids and immunoglobulin therapy.
  • Despite treatment alleviating some symptoms, the patient developed significant autonomic dysfunction, leading to issues like diarrhea and orthostatic hypotension, while tests for specific antibodies were negative, and a nerve biopsy suggested lymphocytic infiltration.
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  • This study aimed to explore how the timing of enucleation and treatment options affect outcomes in retinoblastoma (RB) cases with optic nerve (ON) invasion.
  • Researchers reviewed data from 160 patients with RB over 17 years, finding five cases with ON invasion, primarily assessed through MRI.
  • The results showed that timely enucleation and careful selection of therapies can lead to better survival rates, with most patients surviving long-term, highlighting the importance of appropriate imaging and treatment strategies.
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Metals that are used to reconstruct skeletal structures often interfere with magnetic resonance imaging (MRI) owing to differences in magnetic susceptibility; consequently, metals with lower magnetic susceptibilities need to be developed for use in implant devices. Herein, we investigated the corrosion properties of the Zr-14Nb-5Ta-1Mo alloy, which exhibits low magnetic susceptibility and excellent mechanical properties. The pitting potential of Zr-14Nb-5Ta-1Mo was higher than that of pure Zr.

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Background And Objectives: Estimating heterogeneous treatment effects (HTEs) in randomized controlled trials (RCTs) has received substantial attention recently. This has led to the development of several statistical and machine learning (ML) algorithms to assess HTEs through identifying individualized treatment effects. However, a comprehensive review of these algorithms is lacking.

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Background: Helicopter emergency medical services (HEMS) have become widespread around the world. However, previous studies of the influence of HEMS on mortality were limited to adult patients only and showed inconsistent and heterogeneous results. This study aimed to examine the association between HEMS and mortality among pediatric emergencies compared to ground emergency medical service (GEMS).

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  • The study analyzed the effectiveness of three antipsychotic medications—aripiprazole, blonanserin, and paliperidone—over a 104-week period for patients with schizophrenia as part of the Japan Useful Medication Program for Schizophrenia (JUMPs).
  • A total of 251 patients were treated, with similar treatment discontinuation rates across all medications, and positive improvements in quality of life and symptom scores were noted over time.
  • The findings indicate that while treatment results were comparable, continuing with these medications can lead to improved remission rates and overall quality of life for patients.
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Activating EGFR (epidermal growth factor receptor) mutations can be inhibited by specific tyrosine kinase inhibitors (TKIs), which have changed the landscape of lung cancer therapy. However, due to secondary mutations and bypass receptors, such as AXL (AXL receptor tyrosine kinase), drug resistance eventually emerges in most patients treated with the first-, second-, or third-generation TKIs (e.g.

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Crystallization in Earth's deep magma ocean could have caused trace element fractionation in the lower mantle that might be inherited to the isotopic compositions of the present-day mantle. However, the trace element partitioning has been experimentally investigated only up to the uppermost lower-mantle pressures. Here, we determined the bridgmanite/melt partition coefficients of La, Nd, Sm, Lu, and Hf from 24 to 115 gigapascals, covering the wide pressure range of the lower mantle.

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Nanoparticles have useful functions due to the characteristics conferred on them by an increase in their specific surface area, and they have already been put into practical use in products in various industrial fields. Although exposure to nanoparticles in daily life is unavoidable for pregnant women, studies that evaluate the toxicity of nanoparticles in pregnant women are lacking. To redress this, we have focused on the placenta and have previously revealed that nanoparticles can show placental toxicity.

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Background: This study aimed to clarify the characteristics and survival prediction value of transcranial Doppler microembolic signals (MES) in patients with acute cerebral infarction and active cancer.

Methods And Results: Between 2017 and 2022, 1089 cases of acute cerebral infarction were recorded within 7 days of disease onset. Among them, transcranial Doppler was successful in 33 patients who had active cancer, and these data were analyzed in this study.

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Diabetic neuropathic pain is a known complication of diabetes mellitus (DM) and results from the complex interaction of various factors affecting the nervous system. Yokuansan (YKS) is a versatile traditional Japanese herbal medicine with a wide range of applications, especially in pain management and neurological manifestations. YKS has analgesic properties for nerve damage and is a potential treatment for DM-induced neuropathic pain, especially in patients with diabetic neuropathy.

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Background: We used transcatheter aortic valve implantation (TAVI) procedure time to investigate the association between surgical team maturity and outcome.

Methods: Among patients who underwent TAVI between October 2015 and November 2019, those who had Sapien™ implanted with the transfemoral artery approach were included in the analysis. We used TAVI procedure time and surgery number to draw a learning curve.

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Transnasal humidified rapid-insufflation ventilator exchange (THRIVE) has been reported to have better efficacy during anesthesia induction compared to conventional mask ventilation, including improved oxygenation and prolonged safe apnea time. This study reports on the effectiveness of the THRIVE system during modified electroconvulsive therapy (mECT) for a patient experiencing severe hypoxia. A 78-year-old female patient with bipolar disorder received maintenance mECT every four weeks.

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