Publications by authors named "Takehito Sato"

Background: Anal and perineum pain caused by malignant tumor invasion is often difficult to control with opioids. Continuous sacral epidural ethanol injection therapy is less likely to cause bladder and rectal disturbances, making it a suitable treatment option for patients with preserved voiding function.

Case Presentation: A 45-year-old woman with multiple metastases of malignant pheochromocytoma suffered severe anal pain that worsened, especially when sitting, and was unresponsive to opioid rescue therapy.

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Anesthetic management for awake craniotomy (AC) often poses problems in patients with obesity including respiratory management. The Japan Awake Craniotomy Guidelines state that the indication for surgery should be carefully considered, especially in patients with obesity (body mass index (BMI) > 30). Patients with obesity often have comorbidities such as dyslipidemia, hypertension, and type 2 diabetes, and this is a risk factor for perioperative morbidity and mortality.

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  • Nausea and vomiting during awake craniotomy can lead to serious complications, prompting the use of 5-HT3 receptor antagonists like granisetron and dexamethasone to prevent these issues.* -
  • A study involving 170 patients examined the effectiveness of dexamethasone compared to granisetron in reducing nausea after AC, focusing on a subset of 82 patients matched for analysis.* -
  • Results showed that dexamethasone significantly reduced the incidence of nausea (9.8%) compared to granisetron (41.5%), indicating that dexamethasone is a more effective option for managing nausea during these procedures.*
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  • - Awake craniotomy (AC) can be challenging due to complications like poor arousal and restlessness, which led to the cancellation of a previous procedure for a 48-year-old male patient.
  • - Dexmedetomidine (DEX), a sedative with minimal respiratory risks, was used in low doses during the patient’s reoperation to manage pain and anxiety effectively.
  • - The reoperation involved a combination of anesthetics, and after lowering the DEX dosage, the patient woke up smoothly without agitation, successfully completing language tasks, highlighting DEX's benefits in awake surgeries.
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Background: Awake craniotomy is performed to resect brain tumors in eloquent brain areas to maximize tumor reduction and minimize neurological damage. Evidence suggests that intraoperative anesthetic management of awake craniotomy with remimazolam is safe. We compared the time to arousal and efficacy of anesthetic management with remimazolam and propofol during awake craniotomy.

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Reports on cases of factor Ⅴ (FⅤ) deficiency complicated by platelet function disorders in patients undergoing cardiac surgery are rare, and the utilization of thromboelastography in such cases is limited. This case presents a unique case of FⅤ deficiency complicated by platelet function disorders, highlighting the significance of tailored transfusion strategies guided by thromboelastography (TEG). A 64-year-old hemodialysis patient who was diagnosed with FⅤ deficiency 24 years prior presented for an on-pump coronary artery bypass graft.

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  • The study aimed to determine the best tissue perfusion measurement for initial treatment in adults with sepsis or septic shock through a network meta-analysis.
  • Researchers analyzed data from 17 randomized trials, focusing on short-term mortality within 90 days as the primary outcome.
  • The findings indicated that both lactate-guided and capillary refill time-guided therapies significantly reduced short-term mortality, while central venous oxygen saturation-guided therapy was linked to increased mortality risk.
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Purpose: To elucidate the antiglycation activity of Trapa bispinosa Roxb. extract (TBE) and the related mechanism using a mouse model with type 2 diabetes.

Materials And Methods: We prepared control mice by giving them a normal diet, leptin-deficient ob/ob mouse (ob/ob mice) with a normal diet (normal ob/ob mice), and ob/ob mice with a diet containing TBE (TBE ob/ob mice).

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Cowden syndrome (CS) is a rare autosomal dominant disorder associated with multiple hamartomatous and neoplastic lesions in various organs. Most CS patients have been found to have germline mutations in the tumor suppressor. In the present study, we investigated the causative gene of CS in a family of (phosphatase and tensin homolog deleted on chromosome 10) -negative CS patients.

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Introduction: During awake craniotomy, effective use of local anesthetics, such as ropivacaine, is critical. Blood concentrations of ropivacaine after repeated administration over a short period during awake craniotomy have not been studied.

Materials And Methods: In this prospective cohort study, we evaluated serum concentrations of ropivacaine 15 min after each administration during awake craniotomy at Nagoya University Hospital between April 5, 2018 and August 31, 2019 to determine the safe dose.

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  • - T-cell development in the thymus requires Notch signaling activated by the interaction between Notch1 on T-cell precursors and Dll4 on thymic epithelial cells, with Dll4 evolving from a common ancestor of various fish species.
  • - Dll1, rather than Dll4, is crucial for T-cell development in cartilaginous fishes, and experiments show that Dll1 can fully compensate for the absence of Dll4 in mouse models, triggering important Notch signaling pathways.
  • - The study indicates that Dll1 activates Notch signaling involving Notch1 and Notch2, while Dll4 is restricted to activating only Notch1 in the thymus, suggesting a significant evolutionary shift
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A new ultra-short-acting benzodiazepine intravenous anesthetic agent, remimazolam, was launched in Japan in 2020. Anesthesia during awake craniotomy is reportedly being performed safely using remimazolam; however, studies on its efficacy in awake craniotomy have not been conducted. We aimed to compare the efficacy of remimazolam and propofol in awake craniotomy.

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Quantum annealing was originally proposed as an approach for solving combinatorial optimization problems using quantum effects. D-Wave Systems has released a production model of quantum annealing hardware. However, the inherent noise and various environmental factors in the hardware hamper the determination of optimal solutions.

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Although de novo donor-specific anti-HLA antibodies (dnDSA) remain a barrier for human kidney transplantation (KTx), the role of regulatory T (Treg) cells in dnDSA formation remains unknown. To address this question, we evaluated Treg cell subsets in peripheral blood mononuclear cells in 15 healthy volunteers and 59 KTx recipients using flow cytometric analysis. The post-transplant CD25CD127CD4 Treg cells in KTx recipients were down-regulated compared with those of healthy volunteers (P < .

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Nicolaides-Baraitser syndrome (NCBRS) is a rare congenital genetic disorder characterized by distinctive facial features similar to Treacher Collins syndrome (TCS). We report the first case of successful nasal fiberoptic intubation in a patient with NCBRS with micrognathia and limited mouth opening due to trismus. A 9-year-old girl with NCBRS and dental caries was scheduled to undergo general anesthesia for a dental extraction.

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The dura mater contains abundant macrophages whose functions remain largely elusive. Recent studies have demonstrated the origin, as well as the gene expression pattern, of dural macrophages (dMΦs). However, their histological features have not been explored yet.

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Objective: We generated induced pluripotent stem (iPS) cells from a patient with distal myopathy with rimmed vacuoles (DMRV), in which sialic acids synthesis is reported to be defective. In this study, we examined whether the differentiation to retinal pigment epithelial (RPE) cells and autophagy was affected in the patient derived cells.

Methods: Patient derived iPS cells were established through the transduction of re-programming factors into peripheral mononuclear cells via retrovirus vectors.

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AMBRA1 (activating molecule in Beclin1-regulated autophagy) is a member of the BECN1 (BECLIN1) protein complex, and it plays a role in autophagy, cell death, tumorigenesis and proliferation. We recently reported that on T-cell receptor (TCR) stimulation, AMBRA1 controlled both autophagy and the cell cycle with metabolic regulation. Accumulating evidence has shown that autophagy and metabolic control are pivotal for T-cell activation, clonal expansion and effector/memory cell fate decision.

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  • Podoplanin (PDPN) is a glycoprotein linked to tumor markers, platelet activation, and the process of epithelial-to-mesenchymal transition (EMT), which enhances tumor invasiveness but its exact role in these processes is not fully understood.
  • In experimental methods, researchers used PDPN gene knockout and anti-PDPN antibodies on TE11A esophageal carcinoma cells to evaluate their effects on EMT-related gene expression and how they influenced cellular invasiveness and motility.
  • Findings revealed that PDPN deficiency hindered cellular motility and invasiveness despite some EMT-like gene expression changes, indicating that PDPN may help maintain an epithelial state in these cancer cells.
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