Publications by authors named "Tsuchiya A"

Titanium alloy plates are often used for fixation to bone. However, the plates often need to be removed due to infection and adverse inflammation. To avoid these problems, we immobilized copper, which has antibacterial effects and low cytotoxicity, on titanium plates by immersing the titanium in copper-tris(hydroxymethyl)aminomethane complex solutions.

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Cellular and gene therapy (CGT) products have emerged as a popular approach in regenerative medicine, showing promise in treating various pancreatic and liver diseases in numerous clinical trials. Before these therapies can be tested in human clinical trials, it is essential to evaluate their safety and efficacy in relevant animal models. Such preclinical testing is often required to obtain regulatory approval for investigational new drugs.

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Metabolic dysfunction-associated steatotic liver disease (MASLD) causes cellular senescence due to oxidative stress, endoplasmic reticulum stress, and ectopic fat deposition in the liver. Recently, dasatinib, an antitumor agent, and quercetin, a dietary supplement, were combined as a senolytic drug to eliminate senescent cells. Thus, this study aimed to examine the effects of dasatinib and quercetin administration on removing senescent cells and their therapeutic effects on MASLD in a medaka MASLD model.

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Pheochromocytoma and paragangliomas (PPGLs) crises can be triggered by various factors, including norepinephrine reuptake inhibitors used to treat attention deficit hyperactivity disorder (ADHD), which worsen symptoms in patients with PPGLs. Therefore, attention should be paid to the potential for serious adverse reactions in patients with PPGLs taking ADHD medications. A 21-year-old man presented to the emergency department with acute onset of severe respiratory and circulatory failure after initiating atomoxetine treatment.

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Objectives: Increasingly, discrete choice experiments (DCEs) are conducted online, with little consideration of the digitally excluded, who are unable to participate. Policy makers or others considering online research data need clarity about how views might differ across this "digital divide." We took tasks from an existing online DCE designed to elicit social preferences for health and well-being outcomes.

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  • Cirrhosis is a major health issue due to its poor outcomes and limited therapies, prompting the search for new treatments.
  • Researchers tested a new treatment using platelet-rich plasma-derived extracellular vesicles (PRPEV) in a mouse model of cirrhosis.
  • The findings showed that PRPEV can reduce liver damage, promote healing, and enhance anti-inflammatory responses, suggesting a promising avenue for cirrhosis therapy.
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  • This study evaluates the effectiveness of AI-assisted computer-aided diagnosis (CAD) systems in identifying colorectal lesions, which is crucial for preventing colorectal cancer.
  • The research involved 380 lesions from 139 patients, comparing the diagnostic accuracy of AI using different imaging techniques, with results showing that AI performance was similar to expert endoscopists when using magnified imaging.
  • Findings suggest that while AI is a reliable tool for lesion differentiation, its accuracy can depend on both the imaging method used and the experience level of the endoscopist.
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Among causes of liver failure, liver failure due to lymphocytic infiltration is rare. Unlike typical liver failure, some cases present with severe lactic acidosis and a poor prognosis. We herein report a case of diffuse large B-cell lymphoma with severe lactic acidosis and liver failure.

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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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DNA hypomethylating agents (HMAs) are used for the treatment of myeloid malignancies, although their therapeutic effects have been unsatisfactory. Here we show that CRISPR-Cas9 screening reveals that knockout of topoisomerase 1-binding arginine/serine-rich protein (TOPORS), which encodes a ubiquitin/SUMO E3 ligase, augments the efficacy of HMAs on myeloid leukemic cells with little effect on normal hematopoiesis, suggesting that TOPORS is involved in resistance to HMAs. HMAs are incorporated into the DNA and trap DNA methyltransferase-1 (DNMT1) to form DNA-DNMT1 crosslinks, which undergo SUMOylation, followed by proteasomal degradation.

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The call for "health and wellbeing in all policies" requires a preference-based measure that collapses multi-dimensional health and wellbeing into a single index, such as equivalent income. We aim to elicit preferences of the UK general public to estimate a value set for a suite of seven commonly used wellbeing indicators including health, income, and other dimensions, in terms of equivalent income. Secondly, we examine heterogeneous preferences by gender, by age, and by income.

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Objectives: The objective of the study was to evaluate the feasibility and quality of anesthesia-free in-office hysteroscopic morcellation for the treatment of endometrial polyps.

Materials And Methods: A prospective, single-center, open-label, single-arm clinical trial was conducted to evaluate the efficacy of hysteroscopic morcellation for endometrial polyps or retained products of conception. All surgical procedures were performed using the TruClear™ 5C system in the office setting without anesthesia.

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Bilateral communication between bones and muscles is essential for healing composite bone-muscle injuries from orthopedic surgeries and trauma. However, these injuries are often characterized by exaggerated inflammation, which can disrupt bone-muscle crosstalk, thereby seriously delaying the healing of either tissue. Existing approaches are largely effective at healing single tissues.

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Bone regeneration using synthetic materials has a high rate of surgical site infection, resulting in severe pain for patients and often requiring revision surgery. We propose AgPO-based surface modification and structural control of scaffolds for preventing infections in bone regeneration. We demonstrated the differences in toxicity and antibacterial activity between in vitro and in vivo studies and determined the optimal silver content in terms of overall anti-infection effects, bone regeneration, toxicity, and pigmentation.

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  • Neutrophil gelatinase-associated lipocalin (NGAL) is a biomarker that may indicate early acute kidney injury (AKI), but its role in gastrointestinal diseases needed further exploration.
  • In a study of 171 patients with various gastrointestinal conditions, urinary NGAL levels were significantly elevated in those with acute pancreatitis and cholangitis, and also increased in inflammatory bowel diseases and liver diseases.
  • The findings suggest that urinary NGAL may be a better indicator of infection severity rather than just AKI, and higher levels of NGAL are associated with worse hospital outcomes and patient prognosis.
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Diversion colitis (DC) is characterized by mucosal inflammation in the defunctioned segment of the colon following a colostomy or ileostomy. The major causes of DC are an increase in the number of aerobic bacteria, a lack of short-chain fatty acids (SCFAs), and immune disorders in the diverted colon. However, its exact pathogenesis remains unknown.

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Acute hepatitis E was considered rare until reports emerged affirming the existence of hepatitis E virus (HEV) genotypes 3 and 4 infections in Japan in the early 2000s. Extensive studies by Japanese researchers have highlighted the pivotal role of pigs and wild animals, such as wild boars and deer, as reservoirs for HEV, linking them to zoonotic infections in Japan. Currently, when hepatitis occurs subsequent to the consumption of undercooked or grilled pork, wild boar meat, or offal (including pig liver and intestines), HEV infection should be considered.

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  • Chronic liver injury can make the liver work poorly and cause a buildup of scar tissue called fibrosis.
  • Researchers found a protein called fibulin-4 that could help identify liver fibrosis in patients, especially those with cirrhosis.
  • The study showed that fibulin-4 levels rise with the seriousness of cirrhosis and are linked to other problems like varices (swollen veins) in the liver.
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Granular type of bone substitutes is currently used in the field of dentistry to restore alveolar bone defects. However, the migration of the granules from the implantation site is still an unresolved issue. In this study, the feasibility to fabricate self-setting calcium sulfate hemihydrate (CSH) granules using different ranges of loading pressure: CSH(0), CSH(50), CSH(100), and CSH(150) was investigated with the hypothesis that CSH granules with reduced microporosity can inhibit the rapid dissolution rate of the calcium sulfate dihydrate (CSD) set blocks and induce bone regeneration.

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Background: Cannabidiol (CBD) products have increased in popularity in Japan in recent years, particularly among young people. Some CBD products contain tetrahydrocannabinol (THC), the main ingredient of cannabis, and its analogs, which are illegal in Japan and have become a social issue. This report discusses the safety of CBD products.

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Bone graft granules implanted in bone defects come into physical contact with the host bone and form interconnected porous structure. However, there exists an accidental displacement of granules to unintended locations and leakage of granules from bone defects. Although covering the defect with a barrier membrane prevents granule emanation, this procedure is troublesome.

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  • Median sternotomy is a common surgical technique, but there's a risk of injury from broken sternal wires, particularly affecting healthcare workers.
  • A recent case involved a nurse who was injured by a protruding wire while attempting manual chest compressions on a patient who collapsed.
  • To prevent future injuries, CPR providers should check for wire exposure and use gauze for protection, while also considering safer equipment like rubber pads for automated external defibrillators (AEDs).
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  • The study aims to assess the relationship between the coracoid tip and cephalic veins during shoulder arthroscopy to reduce injury risks.
  • The analysis involved 80 contrast-enhanced CT images, measuring distances between the coracoid tip and cephalic vein in different planes, and considered various patient demographics.
  • Results showed mean distances of 18.4 mm, 23.4 mm, and 33.7 mm, with a correlation between the distance and patient height but no significant differences based on sex or laterality; caution is advised during surgical procedures in these regions to avoid injury.
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  • The study aimed to analyze the effects of pterygium excision on higher-order aberrations (HOAs), coma, and spherical aberrations (SAs) of the cornea.
  • Researchers evaluated 19 eyes from patients who had pterygium surgery and compared them to 25 eyes of healthy individuals using advanced optical imaging techniques.
  • Results showed significant improvements in corneal aberrations one month after surgery, highlighting the importance of addressing both anterior and posterior corneal surfaces in the management of pterygium.
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