Publications by authors named "T Nagayasu"

Chronic allodynia stemming from peripheral stump neuromas can persist for extended periods, significantly compromising patients' quality of life. Conventional managements for nerve stumps have demonstrated limited effectiveness in ensuring their orderly termination. In this study, we present a spatially confined conduit strategy, designed to enhance the self-organization of regenerating nerves after truncation.

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Article Synopsis
  • Tracheal regeneration is difficult due to its complex structure and limited blood flow; this study introduces scaffold-free artificial tracheas created using bio-3D printing.
  • The artificial tracheas feature hyaline cartilage on the front, developed from mesenchymal stem cells, and smooth muscle on the back, with both tissues successfully cultured and matured.
  • Histological analyses confirmed the proper differentiation of cells, showing that the artificial trachea consists of functional tissues suitable for potential applications in medical regeneration.
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Introduction: Practical simulation training with proper haptic feedback and the fragility of the human body is required to overcome the long learning curve associated with laparoscopic inguinal hernia repair (LIHR). However, few hernia models accurately reflect the texture and fragility of the human body. Therefore, in this study, we developed a novel model for transabdominal preperitoneal (TAPP) LIHR training and evaluated its validity.

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Purpose: This study aimed to compare the odor components before and after spraying a deodorizing spray (DS) on volatile odorants in malignant wounds (MWs) in women with breast cancer; a secondary aim was to evaluate the deodorizing effect of the DS.

Design: This is an observational study.

Subjects And Setting: We investigated 3 patients who had MWs resulting from breast cancer.

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Background: Researchers are focusing on cellular therapy for chronic obstructive pulmonary disease (COPD) using mesenchymal stem cells (MSCs), with human bone marrow-derived MSCs (hBM-MSCs) leading the way. However, BM-MSCs may not be as optimal as therapeutic cells owing to their low growth potential, invasive harvesting, and high expression of aging-related genes with poor differentiation potential. Consequently, umbilical cord-derived MSCs (hUC-MSCs), which have many excellent features as allogeneic heterologous stem cells, have received considerable attention.

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