Publications by authors named "Tanaka Yasuhiro"

Article Synopsis
  • The study focuses on placenta previa complicated by placenta accrete spectrum (PAS), emphasizing the need for preoperative diagnosis to ensure proper management of this serious condition.
  • Researchers analyzed MRI images from 145 patients to identify 11 features related to PAS, finding eight features significantly correlated with the condition, particularly placental/uterine bulge and myometrial thinning.
  • A decision tree model, based on five key MRI features, was developed and demonstrated high sensitivity (90%) and specificity (95.5%) for predicting PAS in patients diagnosed with placenta previa.
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The "duckweed-microbes co-cultivation method" is a microbial isolation technique that effectively recovers diverse microbes, including rarely cultivated bacterial phyla, from environmental samples. In this method, aseptic duckweed and microbes collected from an environmental sample are co-cultivated for several days, and duckweed-associated microbes are then isolated from its roots using a conventional agar plate-based cultivation method. We herein propose several improvements to the method in order to specifically obtain members of the rarely cultivated bacterial phylum, Verrucomicrobiota.

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  • Lobular endocervical glandular hyperplasia (LEGH) may be an early form of gastric-type adenocarcinoma of the cervix (GAS), but the genetic changes leading to this cancer are not fully understood.
  • Researchers analyzed genetic mutations by comparing LEGH and GAS tissues from a patient, finding that both lesions shared a significant mutation in the GNAS gene.
  • The study suggests that the identical GNAS mutation indicates a common origin for LEGH and GAS, and further research is needed to better understand the development of GAS.
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  • Topical nasal steroids can shrink hypertrophic adenoids and alleviate related symptoms, but their exact mechanism is not fully understood, prompting this study.* -
  • Histological analysis of adenoids and tonsils from 32 pediatric patients showed that adenoids had higher eosinophil infiltration and greater expression of glucocorticoid receptors and certain interleukins compared to tonsils.* -
  • Findings suggest that inflammation in the adenoids, indicated by eosinophils and specific interleukin expressions, may contribute to adenoid hypertrophy, highlighting possible targets for treatment.*
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Common variable immunodeficiency (CVID) is a primary B cell immunodeficiency disorder. Symptoms do not develop immediately after birth, and patients are often diagnosed in childhood and adulthood. These patients often develop autoimmune diseases and malignant tumors.

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Euglena gracilis, a fascinating organism in the scientific realm, exhibits characteristics of both animals and plants. It maintains redox homeostasis through a variety of enzymatic and non-enzymatic antioxidant molecules. In contrast to mammals, Euglena possesses nonselenocysteine glutathione peroxidase homologues that regulate its intracellular pools of reactive oxygen species.

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Bleeding and thrombosis are common complications during immune thrombocytopenic purpura (ITP) treatment. There is a strong need to predict bleeding and thrombosis risks before ITP treatment to optimize therapy and appropriately manage these complications. We performed a retrospective cohort study of 120 patients with primary ITP to identify a biomarker to predict bleeding and thrombosis.

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Background: The subjective visual vertical (SVV) test can evaluate otolith function and spatial awareness and is performed in dedicated vertigo centers using specialized equipment; however, it is not otherwise widely used because of the specific equipment and space requirements. An SVV test smartphone app was developed to easily perform assessments in outpatient facilities.

Objective: This study aimed to verify whether the SVV test smartphone app with commercially available virtual reality goggles can be used in a clinical setting.

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Background: Isatuximab, an anti-CD38 antibody, has been widely used in treatments for patients with relapsed/refractory multiple myeloma (MM). Despite its high efficacy, not all patients achieve a lasting therapeutic response with isatuximab.

Objective: We tried to identify biomarkers to predict the effectiveness of isatuximab by focusing on the host's immune status before treatment.

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Background: The Scenario Test is recognised for its effectiveness in assessing the interactive aspects of functional communication in people with post-stroke aphasia (PWA).

Aims: To develop a Japanese version of the Scenario Test (Scenario Test-JP) and assess its reliability and validity.

Methods & Procedures: Among 66 participants, we selected 61 individuals: 34 PWA and 27 healthy controls (HCs).

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Objective: Airway surgery is performed for COVID-19 patients who require long-term tracheal intubation and mechanical ventilation. Tracheostomy sometimes causes postoperative complications represented by bleeding at a relatively high rate in COVID-19 patients. As an alternative surgical procedure to tracheostomy, cricotracheostomy may reduce these complications, but few studies have examined its safety.

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The emergence of novel drugs has significantly improved outcomes of patients with plasma cell neoplasms (PCN). The Japanese Society of Hematology conducted a prospective observational study in newly diagnosed PCN patients between 2016 and 2021. The analysis focused on 1385 patients diagnosed with symptomatic PCN between 2016 and 2018.

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We characterized 5 B-cell tumors carrying t(14;19)(q32;q13) that creates the IGH::BCL3 fusion gene. The patients' ages ranged between 55 and 88 years. Two patients presented with progression or recurrence of B-cell chronic lymphocytic leukemia (B-CLL)/small lymphocytic lymphoma (SLL), two with diffuse large B-cell lymphoma (DLBCL) of non-germinal center B-like phenotype, and the remaining one with composite angioimmunoblastic T-cell lymphoma and Epstein-Barr virus-positive DLBCL.

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Allogenic hematopoietic stem cell transplantation (allo-HSCT) is not a standard therapy for solid cancer because of its high toxicity and insufficient evidence levels. However, the potential graft-versus-solid-tumor (GVT) effect of this therapy has been discussed. Many case reports have also described treatment effects of allo-HSCT in patients with hematologic malignancies and active solid tumors.

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Recently, heterozygous loss-of-function NFKB1 variants were identified as the primary cause of common variable immunodeficiency (CVID) in the European population. However, pathogenic NFKB1 variants have never been reported in the Japanese population. We present a 29-year-old Japanese woman with CVID.

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Article Synopsis
  • Plants have a special substance called ascorbate that helps them stay healthy, especially in their leaves.
  • Over time, plants have learned to make more ascorbate, but scientists aren’t sure how this happened without harming them.
  • The way plants make ascorbate has changed from needing stress to needing light, and some plants have traded one protective enzyme for a different one to help them handle ascorbate safely.
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Primary testicular lymphoma (PTL) frequently relapses in the central nervous system (CNS) despite prophylactic intrathecal chemotherapy, and the outcome for CNS recurrence of PTL is very poor. We report a case of isolated CNS recurrence of bilateral PTL. Our patient achieved complete response (CR) after rituximab-combination chemotherapy for PTL.

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  • The study analyzed 923 multiple myeloma patients, focusing on the prognostic value of high-risk chromosomal abnormalities (CAs).
  • Among the 480 patients with complete data, the overall survival (OS) was considerably lower for those with high-risk CAs compared to those without.
  • Specifically, patients with double-positive CAs faced the worst prognosis, with a median OS of just 2.1 years, compared to 6.5 years for those without any CAs.
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  • * In a case involving a 78-year-old man, TBLC combined with endobronchial ultrasonography (EBUS) successfully diagnosed adult T-cell lymphoma (ATL), marking it as the first such diagnosis using this method.
  • * A review of literature found 19 total cases of pulmonary lymphomas diagnosed via TBLC, primarily B-cell lymphomas (84.2%), and highlighted the effectiveness and safety of this technique, suggesting more research is needed to refine diagnostic guidelines.
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Ascorbate plays an indispensable role in plants, functioning as both an antioxidant and a cellular redox buffer. It is widely acknowledged that the ascorbate biosynthesis in the photosynthetic tissues of land plants is governed by light-mediated regulation of the D-mannose/L-galactose (D-Man/L-Gal) pathway. At the core of this light-dependent regulation lies the VTC2 gene, encoding the rate-limiting enzyme GDP-L-Gal phosphorylase.

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Background: Sleeve resection with end-to-end anastomosis (Procedure A) and window resection with a tracheocutaneous fistula (Procedure B) are the major surgical procedures for patients with papillary thyroid carcinoma (PTC) exhibiting transluminal tracheal invasion. For each procedure, the indications, postoperative course, and treatment results were examined retrospectively.

Methods: Of 1,456 patients with PTC (maximum tumor diameter >1 cm) who received initial treatment between 1993 and 2013, we reviewed 51 patients.

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  • Associative learning is essential for adjusting to changes in the environment, and the dorso-medial prefrontal cortex (dmPFC) is believed to play a key role in learning processes, particularly in understanding how it stores and processes information.* -
  • The study developed advanced imaging techniques to observe changes in neural activities in male mouse dmPFC during fear-conditioning, revealing significant reorganization in the neuronal network linked to learned responses.* -
  • Findings indicated that during fear conditioning, neurons that initially respond to unconditioned stimuli became central "hubs" in the network, facilitating the transition from conditioned stimuli to conditioned responses through enhanced connectivity and coactivity.*
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  • Chronic rhinosinusitis (CRS) is an inflammatory disease with eosinophilic and noneosinophilic types, and the study aims to explore how variations in the nasal microbiome may relate to these forms.
  • Factors such as the eosinophilic nature of CRS significantly affect microbiome diversity and composition, leading to notable differences in bacterial species and functions between patient groups.
  • The study found that eosinophilic CRS patients had distinct microbiomes, with specific bacteria like Fusobacterium nucleatum linked to suppressed immune responses in airway epithelial cells, suggesting a crucial role of the nasal microbiome in CRS pathophysiology.
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  • The primary motor cortex (M1) and dorsal striatum are essential for motor learning and retaining learned behaviors, with layer 5a (L5a) neurons playing a significant role in connecting M1 to the striatum.
  • In research with transgenic mice, it was found that M1 L5a intratelencephalic (IT) neurons consistently represented well-learned forelimb movements, even after a period of nontraining.
  • Inactivation of these neurons impaired performance on tasks with varying demands, indicating that they fine-tune skilled movements and that motor memory can persist over time, even without practice.
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