Publications by authors named "Oshiro T"

Stage-specific embryonic antigen-4 (SSEA-4) is a developmentally regulated antigen, while expression level of SSEA-4 and / or its synthase ST3GAL2 is associated with prognosis in various malignancies. We have reported a prominent increase of SSEA-4 in castration-resistant prostate cancer (CRPC) and its negative correlation with the androgen receptor (AR). Meanwhile, loss of AR has increased to approximately 30% with the growing use of androgen receptor signaling inhibitor for metastatic CRPC (mCRPC).

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  • The study examines how bariatric/metabolic surgery affects the incidence and severity of COVID-19 among patients in Japan, amidst ongoing debates about its protective benefits.
  • Data were collected from 83 institutions, revealing that while there were no severe cases or deaths among 119 patients studied, moderate COVID-19 cases were notably more prevalent in these bariatric patients than in the general population.
  • The findings suggest that bariatric/metabolic surgery does not reduce the risk of COVID-19 complications, as moderate cases were linked to specific risk factors such as dyslipidemia and prior infection.
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  • The study investigates how vitamin D levels after bariatric surgery affect skeletal muscle health, focusing on 83 patients who underwent sleeve gastrectomy.
  • Patients were divided into two groups: one receiving vitamin D supplementation and dietary guidance, while the other did not receive guidance, allowing for comparison.
  • Results showed that those who received supplementation had significantly higher vitamin D levels post-surgery, which correlated with better preservation of lower limb muscle mass, suggesting supplementation may help prevent muscle loss.
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The prevalence of fragrances in various hygiene products contributes to their sensorial allure. However, fragrances can induce sensitization in the skin or respiratory system, and the mechanisms involved in this process are incompletely understood. This study investigated the intricate mechanisms underlying the fragrance's effects on sensitization response, focusing on the interplay between CYP450 enzymes, a class of drug-metabolizing enzymes, and the adaptive immune system.

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Understanding the mechanical properties and porosity of reproductive tissues is vital for regenerative medicine and tissue engineering. This study investigated the changes in Young's modulus (YM), storage modulus (E'), loss modulus (E"), and porosity of native and decellularized bovine reproductive tissues during the estrous cycle. Testis tunica albuginea had significantly higher YM, E', and E" than the inner testis, indicating greater stiffness and viscoelasticity.

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Introduction: Cardio-ankle vascular index (CAVI) is an arterial stiffness index that correlates inversely with body mass index (BMI) and subcutaneous fat area. Lipoprotein lipase (LPL) that catalyzes the hydrolysis of serum triglycerides is produced mainly in adipocytes. Serum LPL mass reflects LPL expression in adipose tissue, and its changes correlate inversely with changes in CAVI.

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Background: Glucagon-like peptide (GLP)-1 analogue may be useful for controlling weight recurrence and diabetes relapse after bariatric surgery, but may also adversely affect the measured nutritional metrics. This study aimed to investigate the effect of treatment with once-weekly semaglutide after laparoscopic sleeve gastrectomy (LSG) in patients with type 2 diabetes (T2D). We also examined the effects of combined use with a low-energy, high-protein formula diet (FD).

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In Japan, bariatric surgical treatment was started in 1982. The Japanese Society for Treatment of Obesity (JSTO) was established in 2007, and then, JSTO started the national registry of bariatric surgery cases and multidisciplinary educational program. A total of 44 facilities registered 4055 bariatric surgical cases until 2021.

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Introduction: Postoperative gastroesophageal reflux disease (GERD) can be a consequence of laparoscopic sleeve gastrectomy (LSG). Intrathoracic sleeve migration (ITSM) is a factor contributing to its development. This study aimed to investigate whether the occurrence of ITSM can be prevented by applying a polyglycolic acid (PGA) sheet around the His angle.

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Piriform fossa and/or esophageal injuries caused by calibration tubes are relatively rare and remain unelucidated. Herein, we report the case of a 36-year-old woman with morbid obesity, sleep apnea, and menstrual abnormalities who was scheduled to undergo laparoscopic sleeve gastrectomy (LSG). We inserted a 36-Fr Nelaton catheter made of natural rubber as a calibration tube during the surgery.

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The number of laparoscopic sleeve gastrectomies (LSGs) performed in patients with obesity who are eligible for bariatric and metabolic surgery is currently much lower in Japan than in other countries. Considering the large number of potential patients with obesity and type 2 diabetes and the unique Japanese national health insurance system that guarantees fair healthcare delivery, there is room to increase the number of LSGs in Japan in the near future. However, strict health insurance regulations may limit access to mandatory devices needed to treat postoperative complications, such as staple line leakage, which can cause severe morbidity and even mortality.

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  • Vertical sleeve gastrectomy (VSG) is a highly effective procedure for long-term weight loss and type 2 diabetes remission, with the study investigating the role of the metabolic hormone LEAP2 as a potential predictor for these outcomes.
  • A retrospective analysis of 39 Japanese patients assessed serum levels of LEAP2 and other parameters before and after VSG, revealing that higher preoperative LEAP2 levels correlated with better weight loss and diabetes remission predictions.
  • The findings suggest that preoperative serum LEAP2 concentrations could serve as a valuable indicator for anticipating patient outcomes related to weight loss and type 2 diabetes after undergoing VSG.
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Hematopoietic cell transplantation (HCT) is the only curative therapy for juvenile myelomonocytic leukemia (JMML). Meanwhile, an established conventional chemotherapy before HCT remains unavailable. Studies have shown that azacitidine (AZA), which is a DNA methyltransferase inhibitor, is clinically effective for JMML as a bridging therapy for HCT; a prospective clinical trial in Japan is ongoing.

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Background: Owing to their difficulty following clinical advice for procedural safety and ideal surgical outcomes, bariatric and metabolic surgery (BMS) for patients with disorders of intellectual development (DID) is concerning. Studies reporting the feasibility of BMS for this population remain scarce. This study aims to clarify the feasibility of laparoscopic sleeve gastrectomy (LSG) for patients with clinically severe obesity and DID.

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  • - The study focuses on how N-glycan activation of the thrombopoietin receptor (MPL) is involved in diseases caused by mutant calreticulin, which leads to persistent receptor activation in cells.
  • - Researchers identified thrombocorticin (ThC), a marine sponge-derived lectin that activates MPL by forming receptor dimers and has calcium-dependent properties, much like the oncogenic activation.
  • - The findings indicate that sugar chain-mediated activation of MPL is different from its usual activation method, showcasing the potential diversity of receptor activation in biological systems.
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  • - Primary cancer of the appendix, particularly signet-ring cell carcinoma, is rare and often undiagnosed until surgery, with symptoms including abdominal pain and changes in bowel habits.
  • - A case involved a 48-year-old woman who experienced chronic abdominal issues, leading to imaging that revealed a significant appendiceal tumor.
  • - Following laparoscopic surgery and adjuvant chemotherapy, the patient had a successful outcome with no recurrence over 23 months, highlighting the importance of identifying such cancers early.
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Background: Temporary ileostomy reduces the incidence of severe anastomotic leakage and postoperative mortality. However, little is known about ileostomy-related complications in older adults.

Purpose: To clarify the safety and feasibility of temporary ileostomy for rectal cancer in older patients.

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