Publications by authors named "Fukushima S"

Aberrant immune responses to viral pathogens contribute to pathogenesis, but our understanding of pathological immune responses caused by viruses within the human virome, especially at a population scale, remains limited. We analyzed whole-genome sequencing datasets of 6,321 Japanese individuals, including patients with autoimmune diseases (psoriasis vulgaris, rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), pulmonary alveolar proteinosis (PAP) or multiple sclerosis) and coronavirus disease 2019 (COVID-19), or healthy controls. We systematically quantified two constituents of the blood DNA virome, endogenous HHV-6 (eHHV-6) and anellovirus.

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Extramammary Paget disease (EMPD) is a rare skin cancer that typically occurs in the anogenital area of older people. Since efficacy of treatments for metastatic or unresectable EMPD remains poor, development of a novel therapeutic approach is strongly desired. However, the lack of EMPD models has hampered investigation of EMPD.

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The purpose of the present study is to contribute to the establishment of a standard method for evaluating the adverse effects of nanomaterials by intratracheal administration. Low and high doses of multi-walled carbon nanotubes (MWCNTs) were administered to rats in a single administration or the same final dose as the single administration but divided over four administrations. Bronchoalveolar lavage examination on day 14 showed an inflammatory reaction and cytotoxicity in the lung, generally greater at the higher dose, and tending to be greater in the rats with four administrations at both the low and high doses.

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Background: With the rapid expansion of transcatheter aortic valve replacement (TAVR), TAVR valve explantation is also increasing. Nevertheless, previous reports on Lotus Edge valve explantation are limited to only two reports, none of which include intraoperative videos. Therefore, we report the case of an older adult who underwent a 2-year-old Lotus Edge valve explantation, after developing prosthetic valve endocarditis (PVE) and aortic annular abscess, with a strong indication for a TAVR explantation and surgical aortic valve replacement (AVR).

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Vaccine hesitancy primarily consists of confidence, complacency, and convenience, including geographical accessibility. However, few studies in developed countries have focused on the association between geographical accessibility to vaccination services and vaccination status and previous studies have shown conflicting results. This cross-sectional study aimed to clarify the association between the number of medical facilities within a 15-minute driving distance from the place of residence and influenza vaccination status, using a large nationwide internet survey in Japan ( = 27,440).

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Purpose: Following the COVID-19 pandemic, group A Streptococcus (GAS) infection has been surging worldwide. We aimed to compare the disease burden between notified cases of streptococcal toxic shock syndrome (STSS) and unreported GAS infections.

Methods: This is a multicentral observational study, retrospectively performed at seven hospitals in Okayama prefecture in Japan from January 2022, to June 2024.

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Background: Driveline infections (DLI) caused by nontuberculous mycobacteria (NTM) in patients with implantable left ventricular assist devices (iLVAD) are rare but fatal, requiring early diagnosis and appropriate treatment. Herein, we present a rare case of DLI caused by Mycobacterium chelonae, which was promptly diagnosed using Gram stain and Ziehl-Neelsen stain and followed a favorable clinical course.

Case Presentation: A 51-year-old man with an iLVAD complicated by DLI was admitted to our center.

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Introduction: Corynebacterium species potentially develop high-level daptomycin resistance (HLDR) shortly after daptomycin (DAP) administration. We aimed to investigate the clinical and microbiological characteristics of HLDR Corynebacterium infections.

Methods: We first presented a clinical case accompanied by the results of a comprehensive genetic analysis of the isolate, and then performed a systematic scoping review.

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Purpose: This study aimed to clarify the epidemiology and clinical features of tick bites in a Japanese spotted fever (JSF)-endemic area.

Method: The clinical records of patients with tick bites were retrospectively reviewed based on a survey conducted at Numakuma Hospital, Fukuyama City, Hiroshima, Japan, from 2016 to 2023. Data on basic characteristics, visit dates, residential address, exposure activities, tick-bite sites, and prophylactic antimicrobial prescriptions for each patient with tick bites were collected at the JSF hotspot hospital.

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We encountered two cases of onychomycosis caused by Aspergillus (A.) subramanianii and A. sclerotiorum.

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Despite the widespread adoption of valve-in-valve transcatheter aortic valve replacement (VIV-TAVR) for patients with failed aortic bioprosthesis, the effectiveness of this treatment for Japanese patients frequently associated with small aortic annuli remains unclear. From December-2011 to October-2022, 41 consecutive patients undergoing VIV-TAVR were enrolled in this study. The endpoints were technical success, device success, early safety, and two-year mortality according to implanted surgical valve size (small valves: 19-mm and 21-mm, n = 23; large valves: 23-mm and 25-mm, n = 18).

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Context: Oxytocin supplementation improves obstructive sleep apnea (OSA), and animal studies suggest involvement of oxytocin in respiratory control. However, the relationship between endogenous oxytocin signaling and human sleep status remains undetermined.

Objective: In this study, we approached the contribution of the intrinsic oxytocin-oxytocin receptor (OXTR) system to OSA by genetic association analysis.

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Article Synopsis
  • Peripheral veno-arterial extracorporeal membrane oxygenation (ECMO) can save lives but may cause significant pulmonary edema in heart failure patients; this study highlights better outcomes with a novel central ECMO system that adjusts blood perfusion.!* -
  • Analyzed 10 patients with severe heart failure and pulmonary edema treated using the RALV-AOPA ECMO, which provided optimized blood flow patterns and lower pulmonary arterial pressure, leading to improved heart function within 24 hours.!* -
  • Six patients improved enough to be weaned off ECMO, while others received heart devices or transplants; all patients survived long-term with manageable complications, showcasing the central ECMO system's effectiveness in critical cases.!*
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Objectives: The goal of this study was to investigate whether a larger prosthetic ring relative to a patient's body surface area (BSA) is associated with an increased risk of tricuspid regurgitation (TR) recurrence after tricuspid annuloplasty and of adverse effects on long-term outcomes.

Methods: We retrospectively enrolled 239 patients who underwent tricuspid ring annuloplasty and mitral valve surgery between 2011 and 2016. The tricuspid annuloplasty ring index (TARI) was calculated by dividing the size of the annuloplasty ring (mm) by the BSA (m2).

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Unlabelled: We present a case of BK polyomavirus (BKV) nephropathy (BKVN) after heart transplantation (HTx). The patient was a male with non-ischemic cardiomyopathy who received HTx at the age of 56 years [serum creatinine (sCre) at the time of HTx: 0.89 mg/dl].

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  • - Takayasu arteritis (TAK) is a serious condition that affects large blood vessels, leading to issues like blockages and aneurysms; it's primarily treated with glucocorticoids, but new biological drugs like tocilizumab are proving effective.
  • - Patients on tocilizumab may face higher surgical complications, such as infection or delayed healing, and typically do not show increased inflammatory markers during infections, making management challenging.
  • - There is a lack of guidelines for the best perioperative care for TAK patients needing cardiovascular surgery, but this article proposes a protocol based on recent evidence to help reduce complications in these patients.
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  • Postoperative scoliosis is a common issue following hemipelvectomy for pelvic tumors, though specific development patterns and risk factors are not fully understood.
  • A study reviewed 30 patients and found that the Cobb angle (a measure of scoliosis) significantly increased after surgery, particularly in the first year, with external hemipelvectomy patients showing greater changes.
  • Key risk factors for developing scoliosis included the type of hemipelvectomy performed, specific tissue resections, and whether pelvic ring reconstruction was done; about 30% of patients ultimately had a Cobb angle of 10° or more.
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  • The study investigates carbapenemase-producing Enterobacterales (CPE) at Okayama University Hospital over 5 years (2013-2018), revealing a variety of CPE isolates with different phenotypic and genetic characteristics.
  • Eight CPE isolates were identified, mainly carrying blaIMP-1 and blaIMP-6 genes, with significant diversity in bacterial species and carbapenem susceptibility patterns.
  • The findings highlight the importance of continuous genetic surveillance and customized infection control measures to combat the spread of CPE.
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  • The study explored the timing for surgery in patients with asymptomatic or slightly symptomatic chronic severe aortic regurgitation but with normal heart function, involving 210 patients to assess treatment plans and outcomes.
  • In two distinct studies, one group (Study A) followed a watchful waiting approach, revealing that survival rates matched those of the general population, while another group (Study B) evaluated surgical outcomes after aortic valve replacement, highlighting certain risks associated with heart chamber size.
  • The findings suggest that watchful waiting is a safe option, but left ventricular size over 45 mm before surgery is a key indicator of poor postoperative results, potentially guiding future treatment decisions.
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  • Peritracheostomal pharyngocutaneous fistula (PCF) is a serious complication after laryngectomy that can lead to severe health issues like pneumonia and requires effective management.
  • This study evaluated a new minimally invasive method combining local skin flap placement with negative-pressure wound therapy (NPWT) to treat and close PCFs.
  • In a retrospective analysis of six patients, NPWT was used for an average of 18.2 days, showing effectiveness in managing the condition and reducing complications.
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Introduction: Telemedicine is a growing segment of the healthcare industry. As telemedicine gains prominence in Japan, the importance of telemedicine patient satisfaction research will also grow. This study examines whether Japanese patients are equally impacted by the same latent dimensions discovered in the multi-dimensional service satisfaction model used by a United States (U.

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  • Fungal contamination is a significant risk to public health and food safety, with molds capable of thriving under stress due to melanin production.
  • The study explored how melanin affects UV sensitivity, finding that mature spores are less sensitive to UV light, while reducing melanin through inhibitors increased sensitivity.
  • The research determined that the most effective UV wavelength for inhibiting fungi is around 270 nm, suggesting that melanin provides greater protection against UV damage, which can inform future systems for purifying air and water by targeting molds.
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While most flowering plants engage in mutualistic interactions with their pollinators, Arisaema species employ a unique, seemingly antagonistic strategy by imprisoning and causing the pollinators to perish within their spathes. Recent studies have revealed that Arisaema thunbergii primarily relies on a fungus gnat, Leia ishitanii, with some individuals possibly escaping female spathes after oviposition. We investigated interactions between A.

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