Publications by authors named "Tomotaka Sobue"

The association between intestinal microbiota, dietary and lifestyle habits, and colorectal cancer (CRC) development is not fully understood. This study aimed to assess the association between intestinal microbiota composition and CRC risk across clinical stages, accounting for dietary and lifestyle factors. This cross-sectional study conducted in Japan included 499 participants who underwent colonoscopies.

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At the beginning of 2000, the National Cancer Center had little involvement in cancer statistics. In addition, cancer incidence data were collected by regional cancer registries (approximately 30 prefectures have on-site registries), but the problems were that (1) the completeness of the registration was low, (2) the registration method was not standardized, and (3) usage was limited. In the Third Comprehensive Strategic Cancer Research Project (2004-2013), Field 7, "Research on Developing Cancer Surveillance System and Disseminating Cancer Information," was added, and we could build a system to aggregate the latest cancer statistical data from Japan and provide it as content for cancer information services.

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Background: Improvements in cancer survivorship have led to concern about cardiovascular disease (CVD) among cancer survivors. This study aimed to investigate CVD mortality in patients with cancer compared with the general population, with a focus on specific CVDs including ischemic heart disease, heart failure, aortic dissection, ischemic stroke, and hemorrhagic stroke.

Methods: This nationwide population-based cohort study used data from the National Cancer Registry in Japan.

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The association between salt and salted food consumption and oral, pharyngeal, and oesophageal cancers remains inconclusive. To address this, we conducted a large-scale nationwide cohort study in Japan, a region globally recognised for its high-salt consumption. In a baseline survey conducted from 1988 to 1990, salt consumption was evaluated using a self-administered food frequency questionnaire in a sample of 42,535 participants aged 40-79 years.

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Objective: To describe the protocol and progress of a thyroid study using thyroid ultrasonography in emergency workers who responded to the Fukushima nuclear accident.

Methods: Thyroid ultrasonography was performed on Fukushima emergency workers at over 60 health examination institutions. The accuracy of ultrasonography is controlled by standard procedural protocols, examiner training, and a central review system.

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Background: Although the influence of maternal distress during pregnancy on newborn Apgar scores has been studied in various populations, there is limited research specifically addressing this issue among Asian women. This study of Japanese women aims to investigate the association between maternal distress during pregnancy and the risk of a low 5-min-Apgar score among newborns.

Methods: We analyzed data from 87,765 mother-newborn pairs in the Japan Environment and Children's Study.

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Background: In Japan, as several important vaccines are still categorized as voluntary vaccines that require out-of-pocket payment, the vaccination coverage of voluntary vaccines is lower than that of routine vaccines. Thus, higher voluntary vaccination rates are desired. Herein, we used nationwide birth cohort data to create a voluntary vaccine risk score to identify high-risk individuals who were not vaccinated with voluntary vaccines.

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Objectives In Japan, efforts to provide "end-of-life care" in nursing homes are increasing and its introduction through long-term care insurance in 2006 is a major step forward. However, previous studies have shown that relocating older adults to their end-of-life care affects their burden. This study examined individuals' end-of-life care use under long-term care insurance in older care facilities and investigated the relocation frequency among terminally ill older residents of nursing facilities using receipt data.

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Objectives: There is limited consensus on resectability criteria for Stage IIIA-N2 non-small cell lung cancer (NSCLC). We examined the patient characteristics, N2 status, treatment decisions, and clinical outcomes according to the treatment modality for Stage IIIA-N2 NSCLC in Japan.

Materials And Methods: Patients with Stage IIIA-N2 NSCLC in Japan were consecutively registered in the SOLUTION study between 2013 and 2014.

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The objective of this retrospective observational study was to investigate the impact of fecal occult blood test (FOBT) as colorectal cancer (CRC) screening by primary tumor location. We compared the risk of requiring treatment for advanced disease and total medical costs per patient between CRC patients who underwent FOBT within 1 year before initial treatment for CRC and those who did not, using the JMDC Claims database, large-scale health insurance claims and checkup data in Japan. Treatment for advanced disease was defined as (1) nonendoscopic therapy or (2) chemotherapy or radiotherapy, performed during the follow-up period.

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Background: The health statuses of closely connected individuals are interdependent. Little is known about mortality risk associated with partner's cancer diagnosis and cause-specific mortality risk associated with partner's death.

Methods: Relative risks for all-cause and cause-specific mortality following a partner's cancer diagnosis or death compared to the period when the partner is cancer-free and alive were investigated in the population-based prospective cohort study that enrolled 140,420 people at the age between 40-69 years in 1990-1994.

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  • The study explored the causes of death in cancer survivors, focusing on non-cancer-related mortality, as advancements in cancer care have improved survival rates.
  • Conducted using data from Japan's National Cancer Registry, the analysis covered 3,990,661 cancer patients over a period of up to 4 years post-diagnosis.
  • Findings revealed that non-cancer-related deaths rose significantly over time, with heart disease, cerebrovascular disease, and pneumonia being the leading causes, highlighting the importance of managing overall health in cancer survivors.
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  • The study investigates the link between care needs levels (CNL) at hospital discharge and outcomes in older patients with acute heart failure (aHF), highlighting that those with higher CNL are at greater risk for worse post-discharge outcomes.
  • A cohort of over 17,000 patients aged 65 and older was examined, categorizing their CNL into four levels based on their daily care needs at the time of hospitalization.
  • Results revealed that nearly all patients’ care needs worsened after discharge, with increased risks of mortality for those with higher levels of care needs, indicating that higher CNL at hospitalization correlates with a significantly higher risk of death within a year.
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  • - The study aimed to investigate how the gestational age at birth affects the likelihood of growth failure and respiratory issues (like asthma and wheezing) in children by age 3.
  • - Researchers analyzed data from over 86,000 infants born at 32-41 weeks gestation and used logistic regression to assess risks, factoring in various socioeconomic and perinatal influences.
  • - Findings indicated that infants born moderately preterm, late preterm, and early term had significantly higher chances of experiencing growth failure and respiratory symptoms at age 3 compared to those born full-term, showing a pattern where the earlier the birth, the higher the risk.
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  • Previous research suggests a potential link between statin use and a lower risk of dementia, but this has not been clearly established in Japan's aging population.
  • This study analyzed data from the LIFE Study, focusing on Japanese participants aged 65 and older, to investigate this association more thoroughly.
  • Results showed that statin users had a significantly reduced risk of dementia and Alzheimer's disease, with higher cumulative statin doses offering greater protective benefits compared to non-users.
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  • The study investigates the accuracy of self-reported participation in cancer screenings in Japan, comparing survey responses with actual municipal screening records.
  • A total of 6,920 participants (men and women under 75, plus some elderly) were analyzed to calculate sensitivity and specificity of their self-reports for various screenings.
  • Results indicate moderate to high accuracy for most screenings, but caution is advised in interpreting self-reported data, especially for lung cancer and health checkups.
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  • The study investigated the relationship between statin use and Parkinson's disease risk in Japanese individuals aged 65 and older, using data from the Longevity Improvement and Fair Evidence Study.
  • Results showed that statin use was inversely associated with the risk of developing Parkinson's disease, suggesting a protective effect, especially with higher cumulative doses of statins.
  • Specifically, lower doses correlated with an increased risk, while higher doses were linked to a decreased risk of Parkinson's disease among older adults in Japan.
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  • * 553 patients, aged around 71, were monitored and divided into groups based on how many days it took them to walk at least 100 meters after surgery.
  • * Results indicated that those who walked sooner had a lower risk of heart failure readmissions, suggesting that achieving walkability quickly can be an important predictor for post-surgery cardiovascular health.
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  • This study examines the effects of perioperative therapies on treatment outcomes for Japanese patients with clinical stage III non-small cell lung cancer (NSCLC), analyzing data from the SOLUTION study involving 149 patients who started treatment between 2013-2014.
  • Results showed that patients who received surgery combined with perioperative therapy had significantly better overall survival (29.3 months vs. not reached) and 3-year survival rates (44.0% vs. 61.1%) compared to those who had surgery alone.
  • The analysis indicates that perioperative therapy is linked to improved overall survival, progression-free survival, and disease-free survival, suggesting its importance in enhancing treatment outcomes for NSCLC patients
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  • Researchers aimed to create a simple dietary risk score for cardiovascular disease (CVD) prevention tailored for the Japanese population, addressing the complexity of existing indicators.
  • The study involved 58,672 participants and used a food frequency questionnaire to develop the concise healthy diet score (cHDS), which ranges from 0 to 5 points, to analyze its impact on mortality rates over a median follow-up of 19.2 years.
  • Results showed that higher cHDS scores (indicating a healthier diet) were linked to lower mortality rates from CVD and all causes in both men and women, highlighting its potential effectiveness in promoting health.
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  • Women with polycystic ovary syndrome (PCOS) have a higher risk of gestational diabetes mellitus (GDM), particularly depending on their pre-pregnancy body mass index (BMI).
  • A study in Japan assessed this risk using data from nearly 93,000 singleton pregnancies, finding that women with PCOS showed increased GDM risk mainly in those with higher BMI (G4 and G5 categories).
  • The findings indicate that understanding the relationship between PCOS and BMI can help tailor preconception counseling for women at risk for GDM.
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This hospital-based, cross-sectional study aimed to explore the association between diet and fluctuating intestinal bacteria in early-stage colorectal cancer (CRC) (, , , and ). Healthy participants ( = 212) who underwent total colonoscopy at National Cancer Center Hospital (Tokyo, Japan) were divided into two groups according to the relative abundance of bacteria in their feces: those in the top 25% of relative bacterial abundance as cases and the bottom 25% as controls. The participants were divided into three groups (low, medium, and high) according to their intake of food groups associated with CRC.

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  • Hikikomori is a social condition characterized by prolonged isolation, where individuals avoid social interactions for 6 months or longer, initially seen mostly in young people but now recognized in older adults due to an aging population.
  • A recent cross-sectional study in Japan assessed hikikomori among individuals aged 15-64, revealing a 2.3% prevalence overall, with slight differences between younger (2.12%) and older adults (2.42%).
  • Key risk factors for hikikomori included unemployment, truancy, past psychiatric issues, being male, and lacking an environment that provides peace and belonging.
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Background: Few prospective cohort studies have examined the association between maternal diabetes, including pre-pregnancy and gestational diabetes, and the risk of congenital heart disease (CHD) in Asian offspring.

Methods: We examined the association between maternal diabetes and offspring CHD among 97,094 mother-singleton infant pairs in the Japan Environment and Children's Study (JECS) between January 2011 and March 2014. Odds ratios (OR) and 95% confidence intervals (CI) of offspring CHD based on maternal diabetes (pre-pregnancy diabetes and gestational diabetes) were estimated using logistic regression after adjusting for maternal age at delivery, pre-pregnancy body mass index (BMI), maternal smoking habits, alcohol consumption, annual household income, and maternal education.

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  • The study investigates how indoor environmental factors during pregnancy influence childhood eczema in Japan, aiming to fill knowledge gaps concerning this connection.
  • Using data from the Japan Environment and Children's Study, researchers analyzed responses from over 71,000 mother-child pairs, focusing on indoor conditions and eczema symptoms in children up to 3 years old.
  • Findings revealed that higher mold levels, gas heater use, parquet flooring, and frequent insecticide application significantly increase the risk of developing eczema, suggesting a need for updated WHO guidelines on indoor air quality to better protect child health.
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