Publications by authors named "Murakami Kentaro"

Objective: This study aimed to clarify the physical activity level of patients with upper gastrointestinal cancer during outpatient chemotherapy and the factors associated with decreased physical activity levels after drug administration.

Methods: In this cross-sectional study, activity intensity and steps were measured using an accelerometer in 39 patients with upper gastrointestinal cancer for 1 week before and after drug administration. Furthermore, the participants responded to a questionnaire on their lifestyles.

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Background And Objectives: This cross-sectional study aimed to examine associations between diet quality scores and adverse cardiometabolic status in young Japanese women.

Methods And Study Design: In total, 1084 female dietetics students aged 18-22 years completed a validated self-administered diet history questionnaire. Diet quality was assessed using the Diet Quality Score for Japanese (DQSJ), Healthy Eating Index-2015 (HEI-2015), Alternate Healthy Eating Index-2010 (AHEI-2010), Alternate Mediterranean Diet score (AMED), Dietary Approaches to Stop Hypertension score (DASH), and Japanese Food Guide Spinning Top score (JFGST).

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No study has validated questionnaires for assessing easily calculable diet quality scores in Japan. The Brief-type self-administered Diet History Questionnaire (BDHQ) is widely used to assess dietary intake in Japan, while the Meal-based Diet History Questionnaire (MDHQ) assesses dietary intake for each meal (breakfast, lunch, dinner and snacks) and overall dietary intake. This study examined the relative validity of the BDHQ and MDHQ for assessing three diet quality scores in Japanese adults.

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Background: This study examined how fortified foods and dietary supplements contributed to total nutrient intakes and their adequacy in Japanese adults.

Methods: Nutrient intake was estimated from 4-day dietary records of 392 adults (20-69 years) in total intake considering intakes from fortified foods and dietary supplements and in base diets without considering their intake. Users were defined as participants who used at least one fortified foods and/or dietary supplements during the 4-day recording period.

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Background: Tumor cells (TC) participate in tumor progression by altering the immune responses in the tumor microenvironment. However, the clinical relevance and prognostic effect of PD-L1 expression and tumor-infiltrating lymphocytes (TILs) in esophageal squamous cell carcinoma (ESCC) are unknown. The purpose of this study was to investigate the interactions and clinical significance of PD-L1 expression and TILs in ESCC.

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Background: Second primary esophageal cancer often develops in patients with head and neck cancer, and esophagectomy in patients with a history of total pharyngolaryngectomy (TPL) is challenging. However, the clinical outcomes of these patients have yet to be examined in a multicenter setting.

Methods: We evaluated the surgical outcomes of a nationwide cohort of 62 patients who underwent esophagectomy for esophageal cancer with a history of TPL.

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Article Synopsis
  • This systematic review examined how seasonal changes affect dietary intake among Japanese adults, utilizing studies from PubMed and Ichushi-Web databases.
  • Out of ten studies reviewed, most reported inconsistent seasonal variations in nutrient and food group intakes, with a focus on participants ranging from 25 to 459 and only a few studies considering both sexes.
  • While significant seasonal differences were noted in the intake of vegetables, fruits, and potatoes, the overall findings were marked by high variability, indicating that results should be interpreted with caution due to limited representativeness.
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Esophageal squamous cell carcinoma (ESCC) is an intractable type of cancer that requires novel therapeutic modalities, since the therapeutic outcomes are often inadequate, even in response to multidisciplinary treatment. The antitumor effect of metformin, an antidiabetic drug, has been reported in esophageal cancer; however, its effects are diverse. Since various multidisciplinary therapies are used in ESCC, the antitumor effect of metformin is expected to be synergistic in some treatment strategies.

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Introduction: Identifying accurate biomarkers for predicting response to chemoradiotherapy (CRT) in patients with esophageal squamous cell carcinoma (ESCC) is a critical challenge. The protein SIRT1, recognized for its implications in longevity, has been associated with tumor promotion in ESCC. However, data regarding its correlation with CRT sensitivity remain unreported.

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This content analysis aimed to assess misinformation themes regarding sodium reduction and blood pressure on X with the goal of providing strategies to address and debunk such misinformation. A total of 531 posts were manually coded into sodium-related misinformation themes, with inclusion criteria for posts asserting no association between sodium reduction and hypertension or claiming consuming sodium is beneficial for health. Numbers and post frequencies per misinformation theme were calculated.

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Background: Management and prevention of hypertension are important public health issues. Healthy dietary habits are one of the modifiable factors. As Twitter (subsequently rebranded X) is a digital platform that can influence public eating behavior, there is a knowledge gap regarding the information about foods and nutrients recommended for blood pressure control and who disseminates them on Twitter.

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This study aimed to examine the relationship between the frequency of household shared meals and the intake of 17 food groups and 21 nutrients. Participants were 3310 men and 3386 women ≥20 years old living in a household of ≥2 members from 2018 and 2019 National Health and Nutrition Surveys in Japan. A one-day household dietary record was used to classify an individual's shared meal frequency and dietary intake.

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Small bowel adenocarcinoma (SBA) is a rare tumor with a poor prognosis. Due to its rarity, the research infrastructure for SBA, including cell lines, is inadequate. The present study established a novel SBA cell line, SiCry-15X, using patient-derived xenografts of SBA.

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A 73-year-old woman was referred to our hospital with a chief complaint of black stools and abdominal distention. She was diagnosed with advanced gastric cancer with pyloric stenosis and multiple lymph node metastasis(cT4aN3M0, cStage Ⅲ)and was administered preoperative chemotherapy after laparoscopy and gastric jejunal bypass surgery. The surgical diagnosis was sT4aN3M0P0CY0.

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Background: There is limited evidence regarding the association between consumption of highly processed foods (HPFs) and overall diet quality in children and adolescents from Asian countries.

Objective: This study aimed to examine the association between HPF consumption and overall diet quality in Japanese children and adolescents.

Design: A cross-sectional analysis was conducted based on 8-day dietary record data collected from volunteers in 32 of 47 prefectures throughout Japan in 2016 to 2020.

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Background: Recently, the incidence of achalasia has been increasing, but its cause remains unknown. This study aimed to examine the initial symptoms and the course of symptoms and to find new insights into the cause and course of the disease.

Methods: Altogether, 136 patients diagnosed with achalasia by high-resolution manometry (HRM) were enrolled.

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Despite advances in treatment and diagnosis, the prognosis of patients with esophageal squamous cell carcinoma (ESCC) remains poor. MicroRNAs (miRNAs/miRs) are associated with prognosis in esophageal cancer, indicating that they may help guide treatment decisions. The aim of the present study was to explore exosomal miR-185 as a candidate prognostic biomarker and therapeutic target in ESCC, to investigate its biological function and clinical significance, and to ascertain the applicability of circulating exosomal miR-185 for the development of targeted drugs for ESCC treatment.

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Article Synopsis
  • A phase I/II study previously established an optimal carbon-ion radiotherapy (CIRT) dose for treating early-stage esophageal cancer, prompting further evaluation of its long-term efficacy and feasibility in a larger patient group.
  • The retrospective study included 38 patients treated from 2012 to 2022, showing that all participants, including high-risk individuals, completed the CIRT regimen with manageable side effects, mainly grade 3 esophagitis and pneumonia.
  • After five years, the study reported a 76.6% overall survival rate and confirmed that the recommended CIRT dose fractionation is both effective and feasible for patients with cT1bN0M0 esophageal squamous cell carcinoma.
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Background: Skeletal muscle (SM) is a key factor in cancer treatment. However, it is unclear whether pretreatment SM change affects the outcome of immune checkpoint inhibitors (ICIs) therapy in gastric cancer (GC).

Methods: Advanced GCs treated with ICIs were retrospectively investigated.

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Purpose: The purpose was to assess the relationship between the quality of meals and its context.

Methods: We conducted a cross-sectional study of 222 Japanese adults aged 30-76 years in 2021. The following information was obtained from the 4-d weighed dietary records: the recording day (working or not), meal type (breakfast, lunch, or dinner), eating companions (alone or with someone), eating location (at home or away from home), and screen-based activity (yes or no).

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Purpose: This study aimed to determine the clinicopathologic and prognostic significance of squamous cell carcinoma antigen (SCC-Ag) in patients with esophageal SCC who underwent radical surgery without neoadjuvant therapy.

Methods: This study included 566 patients with primary esophageal SCC who underwent radical resection without neoadjuvant therapy at 15 Japanese hospitals between 2008 and 2016. The cutoff value of SCC-Ag was 1.

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This is the first half of English edition of Japanese Classification of Esophageal Cancer, 12th Edition that was published by the Japan Esophageal Society in 2022.

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This is the second half of English edition of Japanese Classification of Esophageal Cancer, 12th Edition that was published by the Japan Esophageal Society in 2022.

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This scoping review aimed to identify questionnaire-based dietary assessment methods for use in the National Health and Nutrition Survey (NHNS) in Japan. The search was conducted in three databases (PubMed, Web of Science, and ) to identify questionnaire such as food frequency questionnaire and dietary history questionnaire validated against dietary recalls or food records for the intakes of both food groups and nutrients among Japanese adults. Study quality was assessed based on previously developed criteria.

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This cross-sectional study aimed to assess the relationship between self-perceived food literacy (SPFL) and quality of overall diet and main meals in Japanese adults. In total, 5998 adults aged 20-79 years were included in this analysis. The SPFL was assessed using the Japanese version of the 29-item Dutch SPFL scale (score range 1-5).

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