Publications by authors named "HATANAKA R"

Background: Natural disasters may have negative health effects on survivors. However, long-term observations on this are lacking. Therefore, this study investigated the association between the degree of housing damage caused by the Great East Japan Earthquake (GEJE) and all-cause mortality using the data from the cohort study conducted by the Tohoku Medical Megabank (TMM) Project in disaster-stricken areas.

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Background: The primary prevention of atrial fibrillation (AF), which increases mortality through complications including stroke and heart failure, is important. Excessive salt intake and low potassium intake are risk factors for cardiovascular disease; however, their association with AF remains inconclusive. This study investigated the association between sodium- and potassium-related urinary markers and AF prevalence.

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Treating ruptured aneurysms in deep collateral arteries in moyamoya disease is difficult. Two cases of intracranial hemorrhage due to ruptured aneurysms in the deep collateral vessels after indirect revascularization for moyamoya disease were treated via direct surgery with the assistance of surgical simulation using three-dimensional computer graphics. The three-dimensional computer graphics provided detailed anatomical relationships between the aneurysm and the surrounding structures, which led to successful surgical results in both patients.

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Aim: The aim of this study was to evaluate depression at 6 and 12 months postpartum, using the Edinburgh Postpartum Depression Scale (EPDS) total score and its subitem regarding self-harm ideation (SHI) at 1 month postpartum.

Methods: A sample of 12,358 postpartum women answered the EPDS and questionaries at 1, 6, and 12 months postpartum longitudinally.

Results: For participants with postpartum depression (PPD; EPDS total score ≥9) and SHI (SHI sub-score ≥1) at 1 month postpartum, the risk of depression at 6 and 12 months postpartum (odds ratio [95% confidence interval] at 6 and 12 months postpartum: 20.

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Background: Chronic kidney disease (CKD) contributes to decreased life expectancy. We examined the association between leisure-time physical activity (LTPA), non-leisure-time physical activity (non-LTPA) and kidney function.

Methods: This was a cross-sectional study including 32 162 community-dwelling adults aged ≥ 20 years from the Tohoku Medical MegaBank community-based cohort study.

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Article Synopsis
  • - The study aimed to explore how genetic risk, healthy lifestyle habits, and susceptibility to hyperuricaemia (high uric acid levels) are interconnected in a group of over 7,200 participants aged 20 and above.
  • - Results showed that 3% of participants developed hyperuricaemia over 3.5 years, with those having both high genetic risk and poor lifestyle choices significantly more likely to develop the condition (odds ratio: 5.34).
  • - The findings suggest that maintaining a healthy lifestyle can lower the risk of hyperuricaemia despite genetic predispositions, indicating that both genetic and lifestyle factors are important for identifying individuals at risk.
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  • - Sudachitin, a flavonoid, improves glucose metabolism and insulin secretion in mice, effectively doubling insulin release under high glucose conditions.
  • - Oral administration of Sudachitin in mice resulted in a 30% reduction in blood glucose levels and enhanced insulin sensitivity as shown in insulin tolerance tests.
  • - The mechanism involves an increase in intracellular cAMP due to the inhibition of phosphodiesterase (PDE) activity by Sudachitin, suggesting potential pathways for regulating glucose metabolism.
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Few population-based studies including younger adults have examined the potential of olfactory function tests to capture the degree of atrophy in memory-associated brain regions, which cannot be adequately explained by cognitive function tests screening for cognitive impairment. This population-based study investigated associations between high-resolution olfactory test data with few odours and grey matter volumes (GMVs) of the left and right hippocampi, amygdala, parahippocampi, and olfactory cortex, while accounting for differences in cognitive decline, in 1444 participants (aged 31-91 years). Regression analyses included intracranial volume (ICV)-normalised GMVs of eight memory-related regions as objective variables and age, sex, education duration, smoking history, olfaction test score, and the Montreal Cognitive Assessment-Japanese version (MoCA-J) score as explanatory variables.

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This study aimed to investigate the association of combination of birth weight and current body mass index (BMI) with the risk of hypertension in adulthood. This cross-sectional study used data from the Tohoku Medical Megabank Community-based Cohort Study conducted in Japan. A total of 10,688 subjects aged ≥20 years were eligible.

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Depression is comorbid with somatic diseases; however, the relationship between depressive symptoms and hypertension (HT), a risk factor for cardiovascular events, remains unclear. Home blood pressure (BP) is more reproducible and accurately predictive of cardiovascular diseases than office BP. Therefore, we focused on home BP and investigated whether depressive symptoms contributed to the future onset of home HT.

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Poor motor skills in children with developmental coordination disorder (DCD) are associated with childcare stress. This study aimed to assess whether improving the motor skills of children with DCD could reduce parenting stress. The participants were five boys aged 7-10 years with probable DCD and their parents.

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No study, to our knowledge, has constructed a polygenic risk score based on clinical blood pressure and investigated the association of genetic and lifestyle risks with home hypertension. We examined the associations of combined genetic and lifestyle risks with hypertension and home hypertension. In a cross-sectional study of 7027 Japanese individuals aged ≥20 years, we developed a lifestyle score based on body mass index, alcohol consumption, physical activity, and sodium-to-potassium ratio, categorized into ideal, intermediate, and poor lifestyles.

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Article Synopsis
  • The study assessed how genetic risk factors and lifestyle choices influence the likelihood of developing diabetes in a group of over 11,000 individuals aged 20 and older.
  • Results showed that both genetic risk and lifestyle played significant roles in diabetes development, with an increased risk for those with low genetic risk but poor lifestyle habits.
  • The findings emphasize the importance of maintaining a healthy lifestyle for diabetes prevention, regardless of genetic predisposition, and suggest that genetic data can enhance risk stratification beyond lifestyle and family history.
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Aim: To evaluate the association between housing and psychological damage caused by the Great East Japan Earthquake (GEJE) and modifiable risk factors (MRFs) of dementia for general population of older adults.

Methods: This cross-sectional study enrolled 29 039 community-dwelling older adults (mean age 69.1 ± 2.

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Background: The relationship between blood cell profiles, including hemoglobin (Hb) levels and inflammatory hematological ratios, and mental health problems currently remains unclear.

Aim: This study aimed to investigate the relationship between blood cell profiles and mental health issues, including depressive state and sleep disturbance, while adjusting for potential demographic confounders.

Methodology: This retrospective, cross-sectional, observational study used a population-based medical database from the Tohoku Medical Megabank Project with more than 60,000 volunteers.

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Purpose: To elucidate the status of medication use among pregnant women in Japan, by means of a multigenerational genome and birth cohort study: the Tohoku Medical Megabank Project Birth and Three-Generation Cohort Study (TMM BirThree Cohort Study).

Methods: Questionnaires were distributed to pregnant women participating in the TMM BirThree Cohort Study (from July 2013 to March 2017) around 12 weeks (early pregnancy) and 26 weeks (middle pregnancy). We analysed medication use over three periods: (1) 12 months prior to pregnancy diagnosis, (2) the period between pregnancy diagnosis and around week 12 of pregnancy, and (3) post around week 12 of pregnancy.

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Transposable elements are DNA sequences capable of moving within genomes and significantly influence genomic evolution. The nematode Caenorhabditis inopinata exhibits a much higher transposable element copy number than its sister species, Caenorhabditis elegans. In this study, we identified a novel autonomous transposable element belonging to the hAT superfamily from a spontaneous transposable element-insertion mutant in C.

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Background/aims: The objective of this research is to examine factors related to irritable bowel syndrome (IBS) prevalence in a large population-based study.

Methods: A cross-sectional study was conducted with participants in the Miyagi part of the Tohoku Medical Megabank Project Community-Based cohort study who completed the Rome II Modular Questionnaire. Multivariate odds ratios (ORs) for the presence of IBS and 95% confidence intervals (95% CIs) for the reference group were calculated for each factor.

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Background: Upper and lower extremity muscle strength can be used to predict health outcomes. However, the difference between the relation of upper extremity muscle and of lower extremity muscle with physiological factors is unclear. This study aimed to evaluate the association between physiological data and muscle strength, measured using grip and leg extension strength, among Japanese adults.

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Article Synopsis
  • The study examined the relationship between various risk factors for hypertension and systolic blood pressure (BP) in a large Japanese population, using a cohort of nearly 63,000 participants.
  • Key findings indicate that higher body mass index, daily salt intake, and gamma-glutamyl transferase levels were associated with increased systolic blood pressure, while current smoking showed an inverse effect.
  • The results suggest the importance of lifestyle changes, such as diet and alcohol consumption adjustments, to help prevent hypertension among individuals.
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  • The study aimed to profile participants from Miyagi Prefecture during the second phase of the Tohoku Medical Megabank Community-Based Cohort Study, focusing on their characteristics based on their initial survey participation types.
  • Conducted between June 2017 and March 2021, the survey involved questionnaire data as well as blood, urine, and physiological tests, with three participation types identified in the baseline survey.
  • Results showed a 57.7% participation rate, with an 80% participation rate among those visiting community support centers, revealing similar traits among Type 1 and Type 2 respondents, ultimately aiding in understanding the long-term health impacts of disasters.
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  • This study explored the link between body composition, measured through fat mass index (FMI) and fat-free mass index (FFMI), and lipid levels, specifically low-density lipoprotein cholesterol (LDL-C).
  • The research involved over 18,000 participants without heart disease or diabetes, categorizing them into groups based on their FMI and FFMI to analyze their LDL-C levels.
  • Results showed that higher FMI often correlated with increased LDL-C levels, while higher FFMI tended to lower LDL-C levels, suggesting complex interactions between different body compositions regarding cholesterol levels.
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The polysialyltransferases ST8SIA2 and ST8SIA4 and their product, polysialic acid (polySia), are known to be related to cancers and mental disorders. ST8SIA2 and ST8SIA4 have conserved amino acid (AA) sequence motifs essential for the synthesis of the polySia structures on the neural cell adhesion molecule. To search for a new motif in the polysialyltransferases, we adopted the in silico Individual Meta Random Forest program that can predict disease-related AA substitutions.

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  • * This study from Japan explored the link between depressive symptoms and masked hypertension, analyzing data from 6705 participants who were normotensive in clinical settings but had varying home blood pressure readings.
  • * Findings revealed that individuals with depressive symptoms had higher instances of masked hypertension, with odds ratios indicating a stronger association in males (1.72) compared to females (1.30), suggesting that mental health may influence blood pressure management.
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