Publications by authors named "OTSUKA H"

Background: The clinical characteristic differences at the initial recurrence site after resection for pancreatic ductal adenocarcinoma (PDAC) remain unknown. We investigated the clinical characteristics in patients with lung recurrence after surgical resection and evaluated the outcome of resection for isolated lung recurrence.

Methods: Of 442 consecutive PDAC patients who underwent surgical resection between 2002 and 2018, 229 had recurrence on imaging.

View Article and Find Full Text PDF

The Frey procedure, which involves longitudinal pancreaticojejunostomy with coring-out of the pancreatic head, is considered the ideal surgical procedure for chronic pancreatitis with pancreas head stone. Long-term relief from abdominal pain after the Frey procedure was reported to reach about 90%, and this is the most common surgical procedure for chronic pancreatitis in Japan. However, coring-out has the potential risk of severe complications such as bile duct injury, pancreatic fistula, and postoperative hemorrhage.

View Article and Find Full Text PDF

Purpose: The concept of medial stabilizing technique total knee arthroplasty (MST-TKA) is to minimize the medial release without the superficial layer of medial collateral ligament (MCL). However, it is unclear at what stage the proper medial laxity is obtained during surgery. The purpose of this study was to investigate the implication of deep layer of MCL (dMCL) and osteophyte resection on medial laxity during MST-TKA.

View Article and Find Full Text PDF

Tracing cell surface sialylation dynamics at a scale of the glycolipoprotein microdomain (lipid rafts) formations remains an intriguing challenge of cellular biology. Here, we demonstrate that this goal is accessible, taking advantage of a boronic acid (BA)-based reversible molecular recognition chemistry. A BA-end-functionalized poly(ethylene glycol) was decorated onto an atomic force microscopy (AFM) cantilever, which provided a dynamic and sialic acid (SA)-specific imaging mode.

View Article and Find Full Text PDF
Article Synopsis
  • A new linker called difluorenylsuccinonitrile (DFSN) was designed for use in polymer networks, which can break its C-C bond under mechanical stress to form a stable pink radical.
  • DFSN-based polymers show better mechanical properties compared to traditional covalently cross-linked polymers due to energy absorption during the bond cleavage process.
  • The toughness of these elastomers is both visually indicated by the intensity of the pink color and quantitatively measured using electron paramagnetic resonance, highlighting that the amount of bond cleavage directly enhances the material's mechanical performance.
View Article and Find Full Text PDF

Objective: To semiquantitatively estimate fluorine-18-fluorodeoxyglucose (FDG) uptake in primary lung cancer cells using dynamic and dual-time-point (DTP) PET/computed tomography (PET/CT) to obtain a diagnostic index for lymph node metastasis.

Methods: Forty-five patients with lung cancer underwent dynamic and DTP PET/CT examinations. All primary lesions and lymph node metastases were evaluated pathologically.

View Article and Find Full Text PDF

From the leaves of Zanthoxylum ailanthoides, four new phenolic glucosides, termed zanthosides A-D (1-4), were isolated. Their structures were elucidated by means of spectroscopic evidence. Zanthoside A was enzymatically hydrolyzed and thus the aglycone obtained was found to be (1'S,2'R)-(-)-trans-decursidinol, isolated from Angelica decursiva.

View Article and Find Full Text PDF

Background: In spinocerebellar degeneration (SCD) patients, general and regional anesthesia may cause postoperative dysfunction of respiratory, nerve and muscle systems. We present the surgical case of thymoma developed in patient with SCD.

Case Presentation: A 47-year-old woman with spinocerebellar degeneration was admitted because of a well-defined mass measuring 48 × 31 mm in anterior mediastinum.

View Article and Find Full Text PDF

Two new tri-ferulates of sucrose, firmosides A and B (1 and 2, respectively), together with 18 known compounds (3-20), were isolated from the aerial parts of Silene firma. The structures of the isolated compounds were elucidated by various spectroscopic methods, including 1D, 2D NMR, and high-resolution electro-spray ionization-mass spectrometry (HR-ESI-MS). All the isolated compounds were evaluated for their free radical scavenging activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical.

View Article and Find Full Text PDF

Introduction: Although the outcomes of patients with retrohepatic inferior vena cava (IVC) injury have improved because of damage control (DC) strategies, some rare complications have been observed.

Case Presentation: We present the case of a 35-year-old man with diverticulum-like projections (DLPs) of the retrohepatic IVC that occurred following peri-IVC packing based on DC strategies. The DLPs were treated conservatively with anticoagulant therapy and he recovered completely.

View Article and Find Full Text PDF

: Inflammatory response is central to pathogenesis of abdominal aortic aneurysm (AAA). Recently, we reported that Syk, a signaling molecule in inflammatory cells, promotes AAA development in a mouse model. In this study, we aimed to investigate the role of Syk in human AAA pathogenesis.

View Article and Find Full Text PDF

Purpose: This study aimed to reassess the duration of neoadjuvant therapy (NAT) for patients with borderline resectable pancreatic cancer (BRPC).

Methods: The medical records of patients with BRPC who received NAT before intended curative resection were retrospectively reviewed. Patient demographics, clinicopathological factors, and prognostic factors for overall survival were analyzed.

View Article and Find Full Text PDF
Article Synopsis
  • * The identification of these compounds involved advanced techniques like NMR (both 1D and 2D), HR-ESI-MS, and CD spectra.
  • * This research expands the understanding of the chemical diversity within the plant species studied.
View Article and Find Full Text PDF

Background Aortic stenosis (AS) is highly prevalent in patients with atherosclerotic cardiovascular disease. Advanced glycation end products (AGEs) and the receptor for AGEs (RAGE) play a pivotal role for vascular calcification in atherosclerosis. We hypothesize that the AGEs-RAGE axis could also be involved in the pathophysiological mechanism of calcified AS.

View Article and Find Full Text PDF

Background: Good syndrome is a rare condition, manifesting as immunodeficiency due to hypogammaglobulinemia associated with thymoma. Herein, we present a patient with Good syndrome whose thymoma was resected after treatment of cytomegalovirus hepatitis.

Case Presentation: The patient was a 45-year-old woman presenting with fever, cough, and nasal discharge, and was diagnosed with thymoma and hypogammaglobulinemia.

View Article and Find Full Text PDF

Background: One of the most severe pancreatic surgery complications is post-pancreatectomy hemorrhage (PPH). This study's aim was to evaluate the efficacy of flooring the major vessels with falciform ligament in preventing PPH after pancreatoduodenectomy (PD).

Methods: This study was a retrospective review of 500 consecutive patients who underwent PD between Jan 2010 and Dec 2019 at Hiroshima University.

View Article and Find Full Text PDF

In our continuing research for bioactive constituents from natural resources, a new methyl threonolactone glucopyranoside (), a new methyl threonolactone fructofuranoside (), 2 new pyroglutamates ( and ), and 10 known compounds (-) were isolated from the whole plant of (L.) L. The structures of these compounds were determined based on various spectroscopic and chemical analyses.

View Article and Find Full Text PDF

Background And Objective: Nasal symptoms were reduced following allergen-specific sublingual immunotherapy (SLIT) for allergic rhinitis. The mechanisms underlying the effectiveness of SLIT for Japanese cedar pollinosis are poorly understood. We studied changes in the numbers of metachromatic cells, eosinophils, and neutrophils following SLIT for Japanese cedar pollinosis.

View Article and Find Full Text PDF

Background: There is limited knowledge regarding the incidence of recreational snowboarding-related spinal injuries.

Objective: This study investigated the incidence and characteristics of recent recreational snowboarding-related spinal injuries and discussed possible preventive measures to reduce the risk of spinal injuries.

Methods: This descriptive epidemiological study was conducted to investigate the incidence and characteristics of snowboarding-related spinal injuries at the Myoko ski resort in Niigata Prefecture, Japan, between 2006 and 2017.

View Article and Find Full Text PDF

Degenerative aortic stenosis is the most common structural heart valve disease affecting the aging population. Catheter-based heart valve interventions are less invasive and very useful for very elderly patients. However, we often consider open heart surgery for these patients because of anatomical reasons and co-existing cardiac diseases, i.

View Article and Find Full Text PDF

Background: Electromyography (EMG) biofeedback (BF) training is potentially an effective cognitive-behavioural approach to regulate bruxism.

Objective: This study examined sleep bruxism regulation by daytime clenching control using a single-channel auditory EMG BF device.

Methods: Seventeen male subjects (mean age, 24.

View Article and Find Full Text PDF

The establishment of cancer cell lines, which have different metastatic abilities compared with the parental cell, is considered as an effective approach to investigate mechanisms of metastasis. A highly metastatic potential mouse colon cancer cell subline, Colon-26MGS, was derived from the parental cell line Colon-26 by in vivo selection using continuous subcutaneous implanting to immunocompetent mice. To clarify the mechanisms involved in the enhancement of metastasis, morphological characteristics, cell proliferation, and gene expression profiles were compared between Colon-26MGS and the parental cell.

View Article and Find Full Text PDF

Background: Appropriate postoperative lower limb alignment is one important element of a successful unicompartmental knee arthroplasty (UKA). To predict postoperative alignment, it is important to investigate the association between preoperative imaging evaluations and lower limb alignment after medial UKA.

Questions/purposes: (1) Do preoperative valgus stress radiographic and MRI measurements (% mechanical axis, hip-knee-ankle angle, medial meniscal extrusion distance, and osteophyte area at the medial femur and tibia) correlate with postoperative lower limb alignment after UKA; and (2) Can useful cutoffs be calculated in advance of surgery for those findings that were associated with coronal-plane overcorrection?

Methods: We retrospectively analyzed 125 patients with medial knee pain who underwent UKA from January 2012 to October 2018.

View Article and Find Full Text PDF

Vascular endothelial growth factor-A (VEGF-A) is a principal regulator of hematopoiesis as well as angiogenesis. However, the functions of VEGF-A and its receptors (VEGFRs) in the differentiation of mast cells (MCs) in the skin remain unclear. The aim of this study was to determine the expression patterns of two VEGFRs (Flk1 and Flt1) in the skin MCs during development and maturation in rats.

View Article and Find Full Text PDF

Eukaryotic gene expression can be spatiotemporally tuned at the post-transcriptional level by cis-regulatory elements in mRNA sequences. An important example is the AU-rich element (ARE), which induces mRNA destabilization in a variety of biological contexts in mammals and can also mediate translational control. Regulation is mediated by trans-acting factors that recognize the ARE, such as Tristetraprolin (TTP) and BRF1/ZFP36L1.

View Article and Find Full Text PDF