Publications by authors named "Yamamoto C"

: Esophago-tracheobronchial fistula is a severe and often fatal complication in patients with advanced esophageal cancer, requiring prompt attention. The standard treatment involves the placement of a covered stent, which is relatively simple to perform and effectively seals the fistula. However, stent migration remains a common issue, highlighting the need for improved methods to prevent it.

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An accurate understanding of the population is essential for the development of medical care and social resources. However, the development of transportation networks has increased temporal and spatial fluctuations in the population, making it difficult to accurately forecast medical care demand, especially during disaster recovery. This study examined the population movement in areas affected by the Fukushima Daiichi nuclear power plant accident using demographic data.

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In radiological disasters, evacuating institutionalized individuals such as hospitalized patients and nursing home residents presents complex challenges. The Fukushima Daiichi Nuclear power plant (FDNPP) accident, triggered by the Great East Japan Earthquake (GEJE), exposed critical issues in evacuation planning. This case series investigates the evacuation difficulties encountered by three hospitals situated 20 to 30 km from the FDNPP following the GEJE and FDNPP accident.

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Article Synopsis
  • On January 1, 2024, a severe earthquake (intensity 7) hit the Noto Peninsula in Japan, leading to many injuries and displacements.
  • The region has a high elderly population, with nearly half (49.5%) of its residents aged 65 and older.
  • The case study examines a 68-year-old woman who developed aspiration pneumonia while at a welfare shelter, underscoring the difficulties in providing chronic medical care for elderly individuals during disasters.
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Aim: This study aimed to evaluate the validity of a frailty control program for the elderly at a newly established center.

Methods: The subjects were 30 patients who underwent training between January 2022 and January 2023 and who could be evaluated 3 times. The first step of the program was to diagnose frailty and sarcopenia.

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Paqr9 is a gene encoding membrane progestin receptor e (mPRe), the fifth subtype of the five mPR subtypes, and is currently classified a member of the progestin and adipoQ receptor (PAQR) family, which consists of 11 genes. To elucidate the physiological functions of the mPR subtypes, we established gene knockout (KO) fish via genome editing of seven paqr genes in zebrafish and analyzed their phenotypes. The null-mutant strain of paqr9 (paqr9) that we established in this study presented reduced chorion elevation and a high percentage of abnormal embryos.

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Introduction: This study aimed to describe the course of patients with lung cancer from treatment initiation to end-of-life.

Methods: This retrospective cohort study used Claims Data from the National Health Insurance and Advanced Elderly Medical Service System. We analyzed data from patients newly diagnosed with lung cancer between April 2013 and March 2021 who had been hospitalized at our University Hospital in urban area.

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After the Great East Japan Earthquake, planning appropriate healthcare resource allocation was crucial. However, accurately estimating medical care demand was challenging due to substantial population fluctuations caused by extensive evacuations, compounded by the inaccuracy of conventional Resident Resister data in this context. This study employs population data generated from mobile phone network from 2019 to 2020 to conduct a detailed temporal and spatial population estimation in Futaba County, originally a complete evacuation zone.

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Objectives: To investigate the details of disaster-related deaths due to the indirect health effects of the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident following the Great East-Japan Earthquake in 2011 and serve as a source of reference in the event of similar circumstances in the future.

Design: A retrospective observational study.

Setting: Minamisoma City, Fukushima Prefecture, Japan, which is located 13-38 km north of the FDNPP.

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People generally wish to return home after being evacuated due to disaster situations. Evacuation orders have now been lifted in the Fukushima region following the nuclear accident in 2011, and the Japanese government is promoting a return policy. However, many residents who wish to return home remain unable to and continue living in evacuation sites or other areas.

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Article Synopsis
  • The study explores the effects of the 2011 Fukushima disaster on breast cancer patients and their families, highlighting the need to consider family experiences in disaster research.
  • It involved interviews with family members of deceased patients to understand the caregiving burden, medical challenges, and confusion experienced during the disaster.
  • Results showed both strained family dynamics due to caregiving demands and strengthened relationships, emphasizing the need for improved medical support and proactive disaster preparedness in the future.*
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The influence of specific local land-use activities (continuously redistributing elements across environments) and environmental conditions (altering the chemical composition of airborne particulate matter) on the intrinsic health risk of PM exposure is sparsely reported. To fill this gap, we employed a novel integrated approach to address the influence of short-term changes in source-specific PM composition on the exposure-response risk, while controlling for weather conditions. We combine receptor-based source apportionment with conditional logistic regression in a space-time-stratified case-crossover design.

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Sensory disturbances and central nervous system symptoms are important in patients with Minamata disease. In the peripheral nervous system of these patients, motor nerves are not strongly injured, whereas sensory nerves are predominantly affected. In this study, we investigated the mechanisms underlying the sensory-predominant impairment of the peripheral nervous system caused by methylmercury.

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  • Smoke from forest fires poses significant health risks globally, particularly affecting regions like the Amazon basin, where agricultural practices contribute to air quality issues.
  • Public health authorities struggle to predict and manage the effects of smoke, making it challenging to protect communities like Manaus from cardiorespiratory illnesses linked to fire smoke.
  • A study found a one-day lag between fire events and increased hospital admissions for respiratory problems, suggesting that an early warning system could help mitigate health impacts in affected areas.
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Cadmium is a contributing factor to cardiovascular diseases and highly toxic to vascular endothelial cells. It has a distinct mode of injury, causing the de-endothelialization of regions in the monolayer structure of endothelial cells in a concentration-dependent manner. However, the specific molecules involved in the cadmium toxicity of endothelial cells remain unclear.

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Cement factories significantly contribute to atmospheric pollution by generating fine particulate matter (PM), which can potentially increase the mortality risk. The lack of information on the health impacts of PM pollution from cement operations in Brazil prompted this investigation. We used corrected PM measurements from low-cost sensors from March 2021 to October 2022 in Rio Branco do Sul, city in the southern region of the country and home to Latin America's largest cement plant, to assess exposure data.

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  • Moderate-to-severe atopic dermatitis significantly affects patients' quality of life, and the monoclonal antibody lebrikizumab, which targets IL-13, is being evaluated for its long-term effectiveness and safety in treating this condition.
  • In the ADhere-J study, patients who responded positively at week 16 received lebrikizumab combined with topical corticosteroids (TCS) during a maintenance phase, while those who did not respond received lebrikizumab with TCS as an escape option.
  • By week 68, 66-81% of initial responders maintained improvement in their condition, as shown by significant scores in both the Investigator's Global Assessment and the Eczema Area and Severity Index, highlighting
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Background: In atrial fibrillation (AF) management, understanding left atrial (LA) substrate is crucial. While both electroanatomic mapping (EAM) and late gadolinium enhancement magnetic resonance imaging (LGE-MRI) are accepted methods for assessing the atrial substrate and are associated with ablation outcome, recent findings have highlighted discrepancies between low-voltage areas (LVAs) in EAM and LGE areas.

Objective: The purpose of this study was to explore the relationship between LGE regions and unipolar and bipolar LVAs using multipolar high-density mapping.

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Background: Tomato leaf curl New Delhi virus (ToLCNDV) (family Geminiviridae, genus Begomovirus) is a significant threat to cucumber (Cucumis sativus) production in many regions. Previous studies have reported the genetic mapping of loci related to ToLCNDV resistance, but no resistance genes have been identified.

Results: We conducted map-based cloning of the ToLCNDV resistance gene in cucumber accession No.

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Recent advancements in treatment have improved the prognosis of hematologic malignancies. However, the increasing cost of therapeutic drugs has become an urgent issue. Cost-effectiveness analysis is performed using the incremental cost-effective ratio (ICER), a value calculated by dividing the incremental cost by the incremental quality-adjusted life year (QALY).

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Hypermucoviscous (hmKP) is a bacterium known to cause lesions, including abscesses, in various organs. Unlike typical , hmKP can yield a positive string test in culture specimens. Infections caused by hmKP often become severe and are associated with a poor prognosis.

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Rapidly progressing ALL, a potentially fatal disease, demands timely diagnosis and treatment. On the other hand, spontaneous remission/regression (SR) is reported in various cancers including aggressive tumors like ALL. Infection or trauma-mediated immune system activation is assumed to cause SR, with the duration in cases of ALL typically being short.

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Article Synopsis
  • Understanding how immunity decreases after booster shots helps identify which vulnerable groups need more attention.
  • A study assessed immune responses before and after the third vaccine dose in different groups, focusing on blood samples from 1,045 participants.
  • Results showed older individuals and those with initially low immune responses experienced a faster decline in antibody levels, highlighting the need for targeted vaccine strategies.
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