Publications by authors named "Maruyama R"

We report on a successful thoracic endovascular aortic repair for perigraft seroma (PGS) after ascending aorta replacement (AAR). An 82-year-old man underwent AAR. Two years after the operation, computed tomography showed a 75-mm PGS around the ascending aorta.

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The Cryogenic Underground Observatory for Rare Events (CUORE) is a detector array comprised by 988 5  cm×5  cm×5  cm TeO_{2} crystals held below 20 mK, primarily searching for neutrinoless double-beta decay in ^{130}Te. Unprecedented in size among cryogenic calorimetric experiments, CUORE provides a promising setting for the study of exotic throughgoing particles. Using the first tonne year of CUORE's exposure, we perform a search for hypothesized fractionally charged particles (FCPs), which are well-motivated by various standard model extensions and would have suppressed interactions with matter.

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Invasive fungal rhinosinusitis can be fatal if it spreads from the orbit to the cranium. The primary treatment involves thorough lesion debridement; however, complete removal may be challenging in cases involving intracranial extension. Here, we report a case of invasive fungal rhinosinusitis with intracranial and orbital invasion successfully managed with maximal surgical debridement and antifungal therapy.

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Background: Although vancomycin is commonly used to treat methicillin-resistant coagulase-negative staphylococci (MRCoNS) infections, there are no clear guidelines for the optimal 24 h AUC24/MIC ratio. This study aimed to determine the target AUC24/MIC ratio associated with vancomycin-treated MRCoNS infection outcomes.

Methods: This multicentre retrospective cohort study included adult patients who received vancomycin for ≥5 days for bloodstream infections caused by MRCoNS between January 2018 and December 2023.

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  • * The study introduces enhanced modeling techniques for neutrino flux and detector response, and it distinguishes between starting (inside) and throughgoing (outside) neutrino interaction events to improve energy resolution.
  • * The findings indicate a best-fit point for the 3+1 model with sin²(2θ_{24})=0.16 and Δm_{41}²=3.5 eV², supporting previous studies while showing consistency with no evidence of sterile neutrinos, as reflected
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Background: Peritoneal metastasis, a major complication of colorectal cancer (CRC), often leads to poor quality of life and unfavorable outcomes. Despite numerous studies characterizing its biological features in CRC, intratumor heterogeneity and interactions between cancer cells and tumor microenvironment cells remain poorly understood.

Methods: To explore these aspects, we performed single-cell transcriptome analysis of matched primary tumor and peritoneal metastasis samples from a treatment-naïve patient.

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Gastric cancer (GC) is the third leading cause of cancer-related deaths in Japan, underscoring the urgent need for deeper insights into its pathogenesis. Spheroids provide a more realistic and versatile model for studying cancers and cancer stem cells (CSCs). While fructose-bisphosphate aldolase C (ALDOC) has been identified in colorectal cancer spheroids, its role in GC has remained largely unexplored.

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The tumor microenvironment plays a pivotal role in cancer development. We recently reported that in oral squamous cell carcinoma (OSCC), adipocyte enhancer-binding protein 1 (AEBP1) is abundantly expressed in cancer-associated fibroblasts (CAFs), leading to CAF activation and inhibition of CD8 + T cell infiltration. In the present study, we investigated whether AEBP1 contributes to the destruction and atrophy of muscle tissues in OSCC.

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Aim: To evaluate Hyuganatsu oranges (Citrus tamurana Hort. Ex Tanaka) derived arabinogalactan for bone turnover, we performed a randomized placebo-controlled trial.

Methods: Sixty-three postmenopausal women were age-stratified and randomly assigned to receive arabinogalactan-rich hyuganatsu juice (study group) or a placebo drink (control group) for 90 days.

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  • This study looked at women with bladder cancer who had surgery to remove their bladder and other reproductive organs to see how many still had problems with their reproductive organs.
  • Out of 417 women, some had their uterus and vaginal wall saved, but about 9% showed signs of cancer in their reproductive areas.
  • The researchers concluded that doctors need to think carefully about whether to save these organs during surgery because there's a risk that cancer could still affect them.
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Metastasis is a complex process that remains poorly understood at the molecular levels. We profiled single-cell transcriptomic, genomic, and epigenomic changes associated with cancer cell progression, chemotherapy resistance, and metastasis from a Stage IV breast cancer patient. Pretreatment- and posttreatment-specimens from the primary tumor and distant metastases were collected for single-cell RNA sequencing and subsequent cell clustering, copy number variation (CNV) estimation, transcriptomic factor estimation, and pseudotime analyses.

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Purpose: Society is aging, and the proportion of older patients with lung cancer is increasing. However, the treatment choices and prognoses for older patients with cancer recurrence remain unclear. We retrospectively investigated the treatment choices and prognoses of older patients with recurrence.

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Objective: Oligo-recurrence refers to the presence of a limited number of metachronous recurrences that can be treated with radical local therapy, and most patients have a good prognosis. However, the clinical course after local therapy for oligo-recurrence of non-small cell lung cancer (NSCLC) varies, and the prognostic factors are unclear. The aim of this study was to elucidate the prognostic factors of patients with oligo-recurrence of NSCLC who underwent radical local therapy.

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  • - An 88-year-old Japanese woman with HTLV-1 was found to have generalized lymphadenopathy and diagnosed with adult T-cell leukemia/lymphoma (ATLL) exhibiting characteristics similar to angioimmunoblastic T-cell lymphoma (AITL).
  • - Biopsy results showed atypical T-cells with specific markers indicating a T-follicular helper phenotype, along with the presence of Epstein-Barr virus RNA and HTLV-1 proviral DNA, leading to the ATLL diagnosis.
  • - The case highlights the complexity of diagnosing ATLL as it can mimic other T-cell lymphomas, emphasizing the importance of routine HTLV-1 screening in areas where the virus is common to prevent misdiagnosis.
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Adenomyoepithelioma(AME)of the breast is a rare condition, and comorbidity with carcinoma is even more unusual. Herein, we report a case of both AME and apocrine carcinoma in different breasts of a single patient. A 48-year-old woman presented to our clinic with a right breast tumor.

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Background Aortic valve (AV) repair is a challenging procedure due to its complexity, lower reproducibility, and steep learning curve. To examine its durability and validity, we investigated mid-term outcomes following AV repair without aortic root replacement. Methods Between March 2007 and May 2018, we retrospectively identified 14 patients who underwent AV repair without aortic root replacement at our institution.

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Familial platelet disorder with associated myeloid malignancies (FPDMM) is an autosomal dominant disease caused by heterozygous germline mutations in RUNX1. It is characterized by thrombocytopenia, platelet dysfunction, and a predisposition to hematological malignancies. Although FPDMM is a precursor for diseases involving abnormal DNA methylation, the DNA methylation status in FPDMM remains unknown, largely due to a lack of animal models and challenges in obtaining patient-derived samples.

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  • Normal cells regulate growth and maturation through precise gene expression changes influenced by the epigenome, but the epigenetic shifts during cancer progression are not well-understood.
  • This study focuses on medulloblastoma, an embryonal brain tumor, and reveals key epigenomic changes that differentiate precancerous cells from malignant ones.
  • It identifies the nuclear factor I (NFIB) transcription factor as a significant player in cancer development, showing that inhibiting NFIB can disrupt the cancer-specific epigenome, highlighting the role of non-mutational mechanisms in tumorigenesis.
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  • Cardiac metastasis from renal cell carcinoma is uncommon, and there's no standard treatment strategy established for it.
  • A 61-year-old man underwent successful removal of a recurrent cardiac tumor due to renal cancer after initial molecular therapy, but had to have surgery again due to recurrence in the right ventricle.
  • The second surgery was successful, leading to no cardiac recurrence after two years, highlighting the potential effectiveness of surgical intervention in such cases.
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  • Researchers used target-panel sequencing and DNA methylation analysis to investigate the molecular changes during this transition in samples from endometrial tissues.
  • Key findings included the identification of a PTEN mutation in AEH lesions, changes in DNA methylation patterns that may affect tumor development, and a potential methylation signature to differentiate between NAEH and AEH, highlighting the biological steps leading to endometrial cancer.
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  • - The study presents a measurement of astrophysical tau neutrinos using 9.7 years of data from the IceCube observatory, identifying seven candidate events with energies between 20 TeV and 1 PeV.
  • - Convolutional neural networks were used to analyze simulated event images, helping to estimate the parent tau neutrino energy to be around 200 TeV while facing a background of about 0.5 events primarily from non-tau astrophysical neutrinos.
  • - The results confirmed the presence of astrophysical tau neutrinos at a 5σ significance level, aligning with existing IceCube measurements and theoretical predictions regarding neutrino flux and oscillations.
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A 2-month-old Japanese Black calf exhibited mandibular and superficial cervical lymph node swelling. Fine needle aspiration cytology of the superficial cervical lymph node revealed large lymphoblast-like cells with mitoses. Hematological examination revealed remarkable lymphocytosis with atypical lymphocytes.

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Breast cancer is a heterogeneous disease, and breast cancer cell lines are invaluable for studying this heterogeneity. However, the epigenetic diversity across these cell lines remains poorly understood. In this study, we performed genome-wide chromatin accessibility analysis on 23 breast cancer cell lines, including 2 estrogen receptor (ER)-positive/human epidermal growth factor receptor 2 (HER2)-negative (ER+/HER2-), 3 ER+/HER2+, 3 HER2+, and 15 triple-negative breast cancer (TNBC) lines.

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  • The study aimed to investigate the role of tumor-infiltrating Foxp3+ lymphocytes (Foxp3+ TILs) in predicting prognosis and response to immunotherapy in patients with squamous cell lung cancer (SQ-LC).
  • It analyzed 100 patients who had undergone surgery between 2011 and 2017, focusing on the number of Foxp3+ TILs in the tumor stroma and their impact on relapse-free survival (RFS).
  • Findings suggested that a higher count of Foxp3+ TILs (≥ 64 cells) may be linked to a better prognosis rather than a poor one, emphasizing the need for further research to understand the diversity of these cells in the tumor
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