Publications by authors named "Naokuni Hishiya"

Introduction: An increased incidence of metabolic syndrome has been observed in human immunodeficiency virus (HIV)-infected individuals. In contrast, gut dysbiosis is involved in various pathogeneses, including vascular endothelial disorders. Organic acids, including short-chain fatty acids (SCFAs), are essential for maintaining gut homeostasis.

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Introduction: Knowledge is limited on the virologic course of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection, particularly the time taken for viral clearance and the optimal time to discontinue isolation. This study aims to identify the clinical and demographic factors influencing the time taken for viral clearance in patients with COVID-19 to determine the optimal isolation period.

Methods: This two-center retrospective observational cohort study was conducted between March 1 and June 31, 2020.

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Background: Chronic infection with Helicobacter pylori, specifically cagA-positive strains, is associated with gastric cancer. Thus, measures to prevent H. pylori infection are required.

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Invasive Streptococcus agalactiae (GBS) infections are increasingly common among neonates and the elderly. Therefore, GBS surveillance for better antibiotic treatment and prophylaxis strategies are needed. We retrospectively evaluated the clinical aspects of invasive infections and the phenotypic and genetic diversity of infectious isolates from Nara, Japan, collected between 2007 and 2016, by using information from hospital records.

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Ruxolitinib, a Janus kinase inhibitor, considerably improves symptoms of patients with polycythemia vera and primary or secondary myelofibrosis. However, its association with the development of infectious complications is a concern. Herein, we report the case of an 80-year-old man with primary myelofibrosis who developed disseminated tuberculosis during treatment with ruxolitinib at 15 mg twice daily and prednisone at 5 mg.

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Article Synopsis
  • * This text presents a case of a 52-year-old Japanese man who developed an unusual epidural abscess caused by Salmonella enterica serovar Altona, leading to osteomyelitis and a psoas abscess.
  • * The case highlights the need for better understanding of non-typhoidal Salmonella infections, particularly the effectiveness of antibiotic treatment in severe cases, as well as a review of existing cases, which predominantly involved Salmonella Enteritidis.
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We report a clinical case of Filifactor alocis brain abscess in an 85-year-old man who had decayed teeth 1 week prior. In this case, the abscess was surgically drained after empirical antibiotics had been initiated. Although the causative organism could not be identified by culture, F.

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Cunninghamella is a member of the class Zygomycetes. Cunninghamella species include ubiquitous filamentous fungi; infections caused by Cunninghamella species are less frequent but have higher mortality rates than infections caused by Mucorales group members such as Rhizopus and Mucor. Herein, we reported a rare fatal case of endobronchial metastasis from breast cancer accompanied with Cunninghamella bertholletiae tracheobronchial mycetoma.

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Infection with cagA-positive Helicobacter pylori is associated with gastric cancer. Molecular techniques are vital for accurate H. pylori diagnosis.

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Mycotic aneurysm is a rare but life-threatening disease that warrants an integrated therapeutic approach involving surgical intervention and prolonged antibiotic use. However, the causative organisms are often unidentified because antibiotics started empirically render blood and tissue cultures negative. Molecular diagnosis has been reported to be useful in such culture-negative cases.

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Article Synopsis
  • Recent reports indicate that treatment with artemisinin and its derivatives, like artemether-lumefantrine (AL), can lead to delayed hemolytic anemia in patients with severe falciparum malaria.
  • Two case studies are presented: one involved a 20-year-old male who developed hemolytic anemia after an initial response to treatment, and the other a 27-year-old female who relapsed with anemia post-treatment but showed gradual improvement.
  • The study highlights the importance of monitoring patients for up to 4 weeks after AL treatment to identify any signs of hemolysis and ensure proper management.
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A 54-year-old female with dermatomyositis treated with cyclosporine and methylprednisolone presented with multiple subcutaneous nodules on her upper and lower extremities on December 2011. The number of lesions gradually increased. She had a history of surgical intervention such as debridement, skin graft of right lower leg due to trauma and subsequent bacterial infection on August 2011.

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Chronic invasive aspergillosis of the sinus is frequently fatal in the absence of early surgical and chemotherapeutic intervention because of its invasion of vascular tissue. We attempted to control a case of inoperable invasive aspergillosis of the sinus with micafungin and itraconazole oral solution. We prescribed a daily oral dose of 400 mg of itraconazole, which is twice the usual dose, and monitored the serum concentration of the drug.

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