Publications by authors named "Yuki Sato"

Using our recently developed laser speckle contrast imaging (LSCI) to visualize blood vessels and monitor blood flow noninvasively, we test the utility of the developing chick heart as a functional model for drug screening. To this end, we examined the effects of antihypertensive agents Nifedipine and Amlodipine, belonging to the L-type calcium channel antagonist family, on blood flow visualized noninvasively through the intact shell. Guided by the live view mode, the drugs were injected through the shell and ventral to HH16-19 chick embryos.

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Background: Chemoimmunotherapy is the standard first-line treatment for extensive-stage small-cell lung cancer (ES-SCLC); however, its real-world long-term outcomes associated with patient backgrounds are still unclear. We explored this association using an updated large real-world prospective cohort with a minimum follow-up of 3 years.

Methods: This prospective cohort study, conducted across 32 hospitals, enrolled patients with ES-SCLC receiving carboplatin, etoposide, and atezolizumab between September 1, 2019 and September 30, 2020.

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  • - Atopic dermatitis (AD) involves chronic inflammation and a weakened skin barrier, worsened by factors like scratching, and this study looks into how extracellular ATP affects AD.
  • - The research found that ATP reduces filaggrin, a protein vital for skin barrier strength, and heightens inflammation by stimulating immune cell activity when released due to IL-4 and mechanical triggers.
  • - Clodronate, which inhibits ATP release, shows promise in restoring filaggrin levels and reducing inflammation in a mouse model of AD, suggesting that targeting ATP could be a new way to treat this condition.
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The development of building units for π-conjugated polymers is a driving force in advancing the field of organic electronics. In this study, we designed and synthesized dithienonaphthobisthiadiazole (TNT) as a thiophene-fused acceptor (A) building unit and two TNT-based π-conjugated polymers named PTNT2T and PTNT1-F. We found that the microwave-assisted thiophene annulation reaction (thienannulation) of arylethynylated naphthobisthiadiazole (NTz) C-H functionalization effectively produced TNT moieties.

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  • * Higher levels of miR-505-5p/-3p are found in MES-GSCs compared to other types of glioma stem cells and normal brain tissue; lowering these miRNAs affects cell behavior.
  • * Targeting miR-505-5p/-3p leads to increased cell growth and differentiation, while reducing ability to invade and resist the drug temozolomide, indicating these miRNAs help regulate important cellular functions by repressing AUF1 expression.
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Background: Augmented renal clearance (ARC) decreases the therapeutic concentration of drugs excreted by the kidneys in critically ill patients. Several ARC prediction models have been developed and validated; however, their usefulness in Japan has not been comprehensively investigated. Thus, we developed a unique ARC prediction model for a Japanese mixed intensive care unit (ICU) population and compared it with existing models.

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While epidemiological and experimental studies have demonstrated kidney-protective effects of estrogen and female sex in adulthood, some epidemiological data showed deterioration of kidney function during puberty when estrogen production increases. However, molecular mechanisms explaining these conflicting phenomena remain unknown. Here, we showed that the pubertal sex hormone surge in female mice increases susceptibility to kidney ischemia reperfusion injury partly via downregulation of insulin-like growth factor 1 receptor (IGF-1R) expression in proximal tubules.

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  • Plasmablastic lymphoma (PBL) is an aggressive type of lymphoma often seen in immunocompromised individuals, and it's linked to genetic mutations in the STAT3 gene.
  • A rare case of PBL was reported where the patient also developed T-cell large granular lymphocytic leukemia (T-LGLL) and pure red cell aplasia (PRCA) following chemotherapy.
  • This case is significant as it is the first documented occurrence of PBL alongside T-LGLL and PRCA, providing valuable information about the complications and underlying mechanisms of PBL.
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Introduction: Paraneoplastic neurological syndrome (PNS) is associated with small-cell lung cancer (SCLC). However, the frequency and characteristics of PNS and the efficacy of anticancer treatment for these patients have not been investigated in the Japanese/Asian population previously. Therefore, we aimed to better understand PNS by evaluating real-world data from patients with PNS complicated by SCLC.

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Introduction: HER2 mutations are reported to occur in 2%-5% of all cases of non-small cell lung cancer (NSCLC). The clinical outcomes in patients with HER2-mutant NSCLC treated with immune checkpoint inhibitors (ICIs) plus platinum-based chemotherapy as 1st line treatment still remain unclear.

Methods: Using the large-scale clinico-genomic database of LC-SCRUM-Asia, the clinico-genomic characteristics and therapeutic outcomes of patients with HER2-mutant NSCLC were investigated.

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  • Derivatization is important for enhancing the properties of organic materials, but it often requires multiple syntheses of similar intermediates, making the process tedious and time-consuming.
  • This study focuses on thienobenzobisthiazole (TBTz) as a key component in donor polymers for organic photovoltaics, showcasing an efficient late-stage functionalization method that allows for easy synthesis of various derivatives from a single intermediate.
  • The new ester-functionalized TBTz polymer achieves low voltage loss and high charge generation efficiency, suggesting a promising pathway for creating high-performance, halogen-free polymers in organic solar cells.
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Introduction: EGFR tyrosine kinase inhibitors have been the standard treatment for patients with NSCLC who have sensitive mutations. This study revealed final analysis survival data, biomarkers, and resistance mechanisms of osimertinib plus bevacizumab or osimertinib monotherapy in previously untreated patients with advanced -positive nonsquamous NSCLC.

Methods: We previously reported the primary results of a randomized, open-label, phase 2 study comparing osimertinib plus bevacizumab with osimertinib monotherapy for this population.

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  • Linezolid is used to treat resistant infections, but its use can lead to thrombocytopenia; monitoring drug levels in plasma is helpful, though collecting samples can be inconvenient.
  • A study involving patients receiving linezolid measured drug concentrations in both plasma and saliva to explore saliva as a less burdensome monitoring alternative.
  • Results showed a strong correlation between linezolid levels in saliva and plasma, especially in those given intravenous doses, suggesting saliva could effectively replace plasma for monitoring in clinical settings.
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Background: Patients treated with linezolid (LZD) frequently develop thrombocytopenia, and previous studies have identified the risk factors for this condition. However, the relationship between the development of LZD-induced thrombocytopenia and baseline platelet count has varied according to different reports.

Aim: To explore the relationship between platelet count and the development of LZD-induced thrombocytopenia.

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The transcription factor E2F1 serves as a regulator of the cell cycle and promotes cell proliferation. It is highly expressed in cancer tissues and contributes to their malignant transformation. Degradation by the ubiquitin-proteasome system may help to prevent such overexpression of E2F1 and thereby to suppress carcinogenesis.

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To examine the association between habitual intake of milk and dairy products and insomnia. Cross-sectional study by using cohort study data among 60,633 participants (22,721 men and 37,912 women) aged 20-74 years in eastern Japan. The data of milk and dairy products intake, sleep status and other lifestyle habits were collected by self-administered questionnaires.

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Objectives: Certain guidelines recommend caution when administering immunotherapy in patients with pre-existing interstitial lung disease (ILD) owing to the high incidence of pneumonitis induced by anti-cancer therapy. A prospective clinical trial assessing the safety of chemoimmunotherapy in patients with small-cell lung cancer (SCLC) and pre-existing ILD is warranted. Therefore, this study evaluated the safety and efficacy of chemoimmunotherapy in patients with extensive-stage (ES)-SCLC and mild idiopathic interstitial pneumonia (IIP).

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  • BCC (Burkholderia cepacia complex) is a significant cause of pneumonia, particularly in cystic fibrosis patients, and has also been seen in those without cystic fibrosis, with a notably high mortality rate.
  • Combination antibiotic therapy has shown promise in treating BCC pneumonia, yet there's little information regarding its effectiveness for initial and recurring infections.
  • A case study highlights successful treatment of a non-cystic fibrosis patient with BCC pneumonia using a mix of intravenous, inhalational, and oral antibiotics, suggesting that early diagnosis and prompt combination therapy, including inhaled tobramycin, can be effective in managing recurrent BCC infections.
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Background: Immune checkpoint inhibitors (ICIs) occasionally cause immune-related adverse events (irAEs) in various organs. However, predictors of irAEs remain unidentified.

Objectives: We evaluated the predictors of irAEs and compared the outcomes of ICIs with and without irAEs in patients with recurrent/metastatic head and neck cancers (R/M HNCs).

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Noise can play a constructive role in nature and various engineering systems. Over the past four decades, noise-induced stochastic resonances (SRs) have been extensively documented, showing enhancement in system performance. Additionally, inverse SR has been observed in various systems.

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  • In 2022, a survey was conducted to understand how hospitals in Japan handle secondary findings from genetic tests, updating information from a 2020 survey.
  • About 82% of hospitals replied, and they mostly used a specific guideline (CTGPMRSF) for sharing secondary findings.
  • The results showed that many hospitals had challenges like insurance issues and different levels of understanding of secondary findings, but the rates for confirmatory tests (tests to double-check findings) were improving, especially in places with genetic experts.
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Objective: In living tissue, it has been difficult to make microscopic-level observations without damaging the tissue.

Summary Background Data: We have invented a novel intravital fluorescent observation method (IFOM) for real-time tissue observation, combining multi-photon laser scanning microscopy (MPLSM) with curcumin vital staining (CVS-IFOM). The aim of this study was to use CVS-IFOM to analyze the enteric nervous system (ENS) in mice and human patients with hypoganglionosis and Hirschsprung disease.

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CD34 is a well-known cell marker of hematopoietic stem/ progenitor cells, endothelial cells, and fibrocytes. In the peripheral nervous system, a certain type of primary sensory neuron C-fiber low threshold mechanoreceptors (C-LTMRs) are reported to express CD34 mRNA. Here, we investigated the distribution of CD34 protein among putative C-LTMRs (pC-LTMR) using pC-LTMR markers such as VGLUT3 and TH in the dorsal root ganglion (DRG) and spinal cord.

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Unlabelled: Using our recently developed laser speckle contrast imaging (LSCI) to visualize blood vessels and monitor blood flow, here we test the utility of the chick embryo for drug screening. To this end, we examined the effects of antihypertensive agents Nifedipine and Amlodipine, belonging to the L-type calcium channel antagonist family, on blood flow visualized noninvasively through the intact shell. Guided by the live view mode, the drugs were injected through the shell and ventral to HH16-19 chick embryos.

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Wheat (Triticum aestivum) is a major staple crop worldwide, and its yields are significantly threatened by wheat powdery mildew (Blumeria graminis f. sp. tritici).

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