Publications by authors named "Okumura N"

Non-typhoid Salmonella (NTS) includes many serotypes that differ in host, geographic distribution, and virulence. We report the case of a 64-year-old man who developed enteritis caused by Salmonella Kedougou without bacteremia after returning from Thailand. The patient stayed in Chiang Mai, Thailand, for 10 days to play golf and was hospitalized with fever, chills, watery diarrhea, and vomiting on the day the patient returned to Japan.

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Purpose: To validate the clinical impacts of the prognostic nutritional index (PNI), an immune-nutritional blood marker, in patients with resectable non-small cell lung cancer (NSCLC) using multicenter cohort data.

Methods: The subjects of this retrospective multicenter study, involving 11 hospitals, were patients who underwent curative lung resection for pathological stage IA-IIIA NSCLC. We analyzed the relationship between the preoperative PNI and postoperative outcomes.

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Royal jelly (RJ) is recognized due to its high nutritional value and potential health benefits. Previous research showed that RJ supplementation decreased fat accumulation, resulting in weight loss and improvements in hyperglycemia and insulin resistance in high-fat diet (HFD)-induced obese mice. To expand the weight-reducing properties of RJ, this study aimed to investigate the effects of RJ supplementation on HFD-induced obese mice with impaired sleep stabilization.

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Purpose: Fuchs endothelial corneal dystrophy (FECD) displays a higher incidence in females than in males, yet the underlying mechanism remains unclear. This study aimed to elucidate sex-dependent differential gene expressions in corneal endothelial cells (CECs) from healthy non-FECD individuals and from patients with FECD.

Methods: RNA-Seq data from CECs of non-FECD subjects (3 males, 4 females) and FECD subjects (5 males, 5 females) were analyzed to identify differentially expressed genes (DEGs) between the sexes.

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This study aimed to assess fatigue using a noninvasive, quantitative, and simple method using salivary chromogranin A (CgA). In total, 171 adults participated in this study. We used the Cornell Medical Index (CMI) as a questionnaire that included a fatigability section.

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Article Synopsis
  • A 52-year-old woman was diagnosed with both neuromyelitis optica spectrum disorder (NMOSD) and idiopathic multicentric Castleman disease (iMCD), making this the first reported case of their coexistence.
  • Tocilizumab, an antibody that targets the IL-6 receptor, was used to treat the patient and proved effective for both conditions.
  • After treatment, the patient's lung issues related to iMCD improved, and she did not experience any recurrence of neurological symptoms from NMOSD.
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Vibrio fluvialis is a halophilic, motile, flagellated, gram-negative bacterium commonly associated with acute gastroenteritis. However, extraintestinal infections are rare. We describe an unusual case of V.

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Royal jelly (RJ), a natural product secreted by honeybees, is widely used in topical skincare products to help maintain cutaneous homeostasis. Despite its popularity, the mechanism through which RJ exerts its effects on the skin has not been fully elucidated. This study aimed to explore the impact of RJ on the proliferative ability and senescence of human primary epidermal keratinocytes (HPEKs).

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Purpose: The objective of this study was to compare the capacity of anterior segment optical coherence tomography (AS-OCT) and Scheimpflug camera in detecting tomographic changes over 1 year in a cohort of patients with Fuchs endothelial corneal dystrophy.

Methods: We conducted a single-center prospective study which consisted of 2 identical visits spaced 1 year apart. At each visit, tomographic analyses were performed using Scheimpflug imaging (Pentacam HR, Oculus) and swept source AS-OCT (Casia SS-1000 Tomey).

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We evaluated the diagnostic performance of Rapiim SARS-CoV-2-H (Rapiim-H)-a point-of-care qualitative antigen test-using nasopharyngeal swabs (NPS) and saliva samples and compared its results with those from antigen quantification and nucleic acid amplification tests. NPS and saliva were collected from patients with confirmed and suspected coronavirus disease (COVID-19). In total, 142 NPS and saliva samples were collected.

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Purpose: To investigate the effect of studying abroad on catch-up vaccination coverage for measles, rubella, mumps, varicella, and tetanus during the pretravel consultation among young adult travelers.

Methods: This retrospective cohort study analyzed data from the Japan Pretravel Consultation Registry (J-PRECOR) on individuals aged 18-21 years with childhood vaccination records. Propensity score weighting was used to estimate the average treatment effect on the proportion of participants receiving catch-up vaccination.

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There is a paucity of data on the clinical course and treatment of . Herein, we describe a successfully treated case of bacteremia. A 76-year-old man with lung adenocarcinoma developed bacteremia caused by penicillin-resistant, oxacillin-susceptible , which was identified through mass spectrometry and gene sequencing.

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Left upper trisegmentectomy is expected to be as curative as lobectomy for lung cancer because the left upper lobe is anatomically the same as the combined upper and middle lobes of the right lung and the procedure can provide a sufficient surgical margin. In the present multicenter study, we compared the results of trisegmentectomy and lobectomy in patients with clinical stage T1c-2aN0M0 left upper lung cancer. We retrospectively analyzed the outcomes of patients with clinical stage T1c-2aN0M0 lung cancer in the left upper segment who underwent lobectomy or trisegmentectomy between January 2006 and June 2022.

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Purpose: To determine whether the clinical and paraclinical course of Fuchs endothelial corneal dystrophy (FECD) over 1 year is related to the extent of triplet repetition in the transcription factor 4 (TCF4) gene.

Methods: A prospective study with a 1-year follow-up was conducted. A total of 104 patients (160 eyes) with FECD and an equivalent number of age- and sex-matched control subjects without FECD were included.

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Article Synopsis
  • The study investigates how royal jelly (RJ) affects epigenomic changes in the small intestine, with a focus on its impact on metabolic health.
  • RJ administration showed improvements in insulin sensitivity and lipid metabolism without altering body weight, indicating its potential benefits for metabolic disorders.
  • The research identified significant alterations in histone modifications linked to genes involved in cancer progression and metabolism, suggesting that RJ could serve as a therapeutic agent for enhancing metabolic health.
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Dietary supplementation with melinjo (Gnetum gnemon L.) seed extract (MSE) has been an integral part of an anti-obesity therapeutic regimen. To examine the relationship between anti-obesity and sleep, we explored the effect of MSE on sleep structure in high-fat diet (HFD)-induced obese mice.

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  • The study aimed to assess the pharmacokinetics of ganciclovir eye drops by comparing different formulations and examining how systemic administration affects drug levels in the eye and blood.
  • Researchers used rabbit eyes to test 0.5% and 1.0% ganciclovir solutions alongside 0.15% ganciclovir gel, measuring drug concentrations in various ocular tissues and serum over time.
  • Results indicated the ganciclovir gel maintained higher therapeutic levels in the eye for a longer period than the solutions, and systemic administration increased drug concentration in the blood, suggesting a potential approach for treating severe eye infections.
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Background: Induction therapy followed by surgery is recommended as an alternative treatment strategy for locally advanced non-small cell lung cancer (NSCLC). Patients who achieve pathologic response after induction therapy have better outcomes than non-responders; therefore, therapeutic response must be evaluated. Recently, new approaches for monitoring therapeutic responses, which are based on F-Fluorodeoxyglucose positron emission tomography (FDG-PET), have been developed.

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Article Synopsis
  • The rise of antimicrobial-resistant organisms (AROs) is a significant concern for health in Japan, mainly driven by infections from methicillin-resistant Staphylococcus aureus (MRSA), leading to a high rate of disability-adjusted life years (DALYs).
  • Factors such as age, mortality rates in MRSA bacteremia patients, and lengthy hospital stays contribute to this issue, with Japan experiencing longer MRSA bacteremia onset times compared to Western countries.
  • The findings call for better strategies to reduce hospital stays and highlight the need for larger studies to assess the full economic and health impacts of MRSA bacteremia in Japan.
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Background: Anamorelin is expected to improve cancer cachexia by increasing lean body mass (LBM) due to increased appetite and protein synthesis. However, the effect of anamorelin on cancer cachexia in real-world practice is unclear. The purpose of this study was to evaluate the efficacy and safety of anamorelin and to identify predictors of efficacy on treatment with anamorelin.

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Endothelial dysfunction is important in the pathology of pulmonary hypertension, and circulating endothelial progenitor cells (EPCs) have been studied to evaluate endothelial dysfunction. In patients with chronic thromboembolic pulmonary hypertension (CTEPH), riociguat reportedly increases the number of circulating EPCs. However, the relationship between EPC numbers at baseline and changes in clinical parameters after riociguat administration has not been fully elucidated.

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The compound 15-deacetylcalonectrin (15-deCAL) is a common pathway intermediate in the biosynthesis of trichothecenes. This tricyclic intermediate is metabolized to calonectrin (CAL) by trichothecene 15--acetyltransferase encoded by . Unlike other trichothecene pathway gene mutants, the Δ mutant produces lower amounts of the knocked-out enzyme's substrate 15-deCAL, and instead, accumulates higher quantities of earlier bicyclic intermediate and shunt metabolites.

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This study aimed to confirm urinary protein fragments in relation to the presence of pancreatic ductal adenocarcinoma (PDAC) via a C-terminal proteomics strategy using exploratory and validation cohorts. Urinary fragments were examined by iTRAQ-labelling of tryptic peptides and concentrations of C-terminal fragments were evaluated. Only the urinary CD276 fragment showed a fold change (FC) of > 1.

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Purpose: This study evaluated the dysregulation of TCF4 isoforms and differential exon usage (DEU) in corneal endothelial cells (CECs) of Fuchs endothelial corneal dystrophy (FECD) with or without trinucleotide repeat (TNR) expansion in the intron region of the TCF4 gene.

Methods: Three RNA-Seq datasets of CECs (our own and two other previously published datasets) derived from non-FECD control and FECD subjects were analyzed to identify TCF4 isoforms and DEU events dysregulated in FECD by comparing control subjects to those with FECD with TNR expansion and FECD without TNR expansion.

Results: Our RNA-Seq data demonstrated upregulation of three TCF4 isoforms and downregulation of two isoforms in FECD without TNR expansion compared to the controls.

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Article Synopsis
  • - In a study of three patients with inoperable advanced gastric cancer and multiple liver metastases, treatment with the immune checkpoint inhibitor nivolumab led to significant regression of liver tumors, enabling the possibility of conversion surgery.
  • - Each patient underwent a combination of chemotherapy and nivolumab, with varying treatments due to side effects and disease progression, ultimately resulting in successful surgeries to remove both gastric and liver tumors.
  • - Post-surgery pathological examinations indicated a complete response to treatment despite the initial presence of liver metastases, highlighting the potential effectiveness of nivolumab in managing advanced gastric cancer.
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