Publications by authors named "Suzuki Ai"

Background: The association between heatwave and heat-related outcomes in people with mental health conditions with and without psychotropics was unclear.

Methods: We identified people with severe mental illness (SMI) and depression, respectively, using Japanese claim data of Ibaraki prefecture during 1/1/2014-31/12/2021. We conducted self-controlled case series to estimate the incidence rate ratio (IRR) of heat-related illness, myocardial infarction and delirium, respectively, during 5-day pre-heatwave, heatwave, and 5-day post-heatwave periods all other periods (baseline) within an individual, stratified by periods prescribed psychotropics and periods not prescribed psychotropics, respectively.

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Introduction: Dyslipidemia increases the risk of cardiovascular and cerebrovascular diseases. Visiting a physician for follow-up is essential when dyslipidemia is detected during health checkups. We investigated factors associated with non-attendance at a follow-up visit for dyslipidemia.

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Article Synopsis
  • The study focused on identifying clinical subtypes in individuals starting long-term care in Japan and explored their links to prognosis using medical claims and care-need data.
  • Researchers analyzed data from 4,648 participants, categorizing them into six distinct clinical subtypes based on 22 diseases recorded over the previous six months.
  • The findings revealed that individuals with cardiac, respiratory and cancer, and insulin-dependent diabetes subtypes had higher risks of death and worsening care needs compared to those in the musculoskeletal and sensory subtype.
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  • Developed a flexible model for estimating upper limit populations of long-tailed macaques using camera trap images and habitat preference mapping.
  • The model combines environmental data, GPS data, and direct sightings to produce estimated population numbers, optimized through a parameter representing inquisitiveness.
  • Results indicate that long-tailed macaque populations are up to 80% smaller than expected, highlighting the model's accuracy and potential as a noninvasive tool for wildlife conservation across species.
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Background: Understanding how analgesics are used in different countries can inform initiatives to improve the pharmacological management of pain in nursing homes.

Aims: To compare patterns of analgesic use among Australian and Japanese nursing home residents; and explore Australian and Japanese healthcare professionals' perspectives on analgesic use.

Methods: Part one involved a cross-sectional comparison among residents from 12 nursing homes in South Australia (N = 550) in 2019 and four nursing homes in Tokyo (N = 333) in 2020.

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Joubert syndrome and related disorders (JSRD) are rare and intractable diseases characterized by delayed psychomotor development, hypotonia and/or ataxia, and abnormal respiratory and eye movements. Cerebellar vermis agenesis and molar tooth signs are distinct on cerebral magnetic resonance imaging (MRI). Children with JSRD present with delayed psychomotor development, including intellectual disability and emotional or behavioral problems.

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The present study aimed to establish new reference intervals (RIs) for serum free triiodothyronine (fT3), free thyroxine (fT4), and thyroid stimulating hormone (TSH) levels in Japanese children and adolescents aged 4 to 19 years. A total of 2,036 (1,611 girls, 425 boys) participants were included over a 17-year period; they all tested negative for antithyroid antibodies (TgAb, TPOAb) and were found to have no abnormalities on ultrasonography. RIs were determined by nonparametric methods.

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  • Genetic characterization of the rubella virus (RV) is essential for detecting and diagnosing both endemic transmissions and imported cases, but the currently used E1 gene sequencing may not be sufficient.
  • During the 2018-2019 RV outbreak in Tokyo, identical E1 gene sequences were found in non-linked patients, raising concerns about distinguishing between endemic and imported strains.
  • The study suggests that by analyzing the more diverse E2 gene in conjunction with the E1 region, better insights into the RV strains can be gained, potentially enhancing epidemiological evaluations.
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Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return of samples from near-Earth asteroid (162173) Ryugu by Hayabusa2 provides the first opportunity for laboratory study of space-weathering signatures on the most abundant type of inner solar system body: a C-type asteroid, composed of materials largely unchanged since the formation of the Solar System. Weathered Ryugu grains show areas of surface amorphization and partial melting of phyllosilicates, in which reduction from Fe to Fe and dehydration developed.

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  • The study investigated how potassium iodide (KI) affects radioiodine uptake (RAIU) in patients with Graves' disease (GD) prior to radioisotope therapy.
  • A total of 82 patients on KI treatment were compared to 354 patients on thiamazole (MMI) treatment, ensuring that all participants had low urinary iodine excretion.
  • Results showed that RAIU was significantly lower in the KI group compared to the MMI group, suggesting KI may suppress RAIU more effectively due to different suppression mechanisms.
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  • The study investigates neonatal hypothyroidism in newborns of mothers with Graves' disease who continued antithyroid drug (ATD) treatment until delivery, finding an incidence of 19% for methimazole (MMI) users and 12.8% for propylthiouracil (PTU) users.
  • It identifies that the daily ATD doses during the third trimester are crucial predictors for risk; with cutoff doses of 10 mg/day for MMI and 150 mg/day for PTU being significant.
  • Higher maternal thyrotropin receptor antibody (TRAb) levels also correlate with increased risks, emphasizing the need for careful monitoring of pregnant women undergoing treatment for Graves' disease.
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  • The study investigates the crystal structure and superconducting properties of a new titanium-pnictide superconductor, BaTi(SbBi)O, with varying compositions to see how bismuth (Bi) substitution for antimony (Sb) influences superconductivity under pressure.
  • It analyzes three samples with different Bi/Sb ratios, correlating their behavior with a double-dome phase diagram, where changes in superconductivity are observed at critical pressures.
  • The findings reveal distinct superconducting characteristics influenced by Bi/Sb ratio, including a notable collapse transition in the lattice at around 5 GPa for the sample with 0.2 Bi, while the one with 0.8 Bi experiences more stable crystal lattice changes under pressure.
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During the COVID-19 pandemic in 2021, Japan experienced an outbreak of respiratory syncytial virus (RSV) infection. A total of 51 RSV cases were detected in infant specimens, including 38 rhinorrhea and 13 nasopharyngeal swabs, collected at the Tokyo Metropolitan Institute of Public Health. Of the 51 cases, 12 were RSV-A and 39 were RSV-B.

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The genetic characterization of archival specimens is important for evaluating the evolutionary processes of noroviruses. Complete viral genome sequences, GVIII.1[GII.

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The severity of hyperthyroidism in Graves' disease (GD) has been reported to be worse in younger patients and to gradually improve with advancing age, accompanied by declining thyrotropin (TSH) receptor antibody (TRAb) values. This study was conducted to explore the extent to which the declining TRAb production may contribute to a decrease in severe hyperthyroidism with advancing age in patients with GD. This study was a cross-sectional analysis of retrospectively reviewed data.

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Although untreated Graves' disease (GD) is associated with a higher risk of cardiac complications and mortality, there is no well-established way to predict the onset of thyrotoxicosis in clinical practice. The aim of this study was to identify important variables that will make it possible to predict GD and thyrotoxicosis (GD + painless thyroiditis (PT)) by using a machine-learning-based model based on complete blood count and standard biochemistry profile data. We identified 19,335 newly diagnosed GD patients, 3,267 PT patients, and 4,159 subjects without any thyroid disease.

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This study aims to investigate the factors of care-level deterioration in older adults with mild and moderate disabilities using nationally standardized survey data for care-needs certification. We enrolled people aged 68 years or older, certified as support levels 1-2 (mild disability) or care levels 1-2 (moderate disability) with no cancer. The outcome was care-level deterioration after two years.

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Article Synopsis
  • - The investigation explored the structural and superconducting properties of KBi and RbBi compounds under varying pressures, revealing that KBi exhibits two superconducting phases and its transition temperature changes with pressure, whereas RbBi's transition temperature remains stable.
  • - KBi decomposes into KBi and Bi at pressures above 2.5 GPa, and this decomposition is linked to notable drops in superconducting transition temperature at higher pressures, while RbBi shows consistent behavior up to 8 GPa.
  • - The study examined the superconducting Cooper pair symmetry in both compounds and found deviations from expected models due to Bi's complex electronic structure, ultimately highlighting KBi's chemical stability and unique superconducting properties under pressure.
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Primary thyroid lymphoma (PTL) is known to develop mostly in patients with Hashimoto's thyroiditis (HT), and it is rare for it to develop in patients with Graves' disease (GD). The objective of this study was to investigate the clinical features, pathological findings, and long-term outcomes of PTL patients, grouped according to the presence of GD, HT, or no autoimmune thyroid disease (AITDs). The GD group was of major interest due to limited knowledge of the relationship with PTL.

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The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present images of the second touchdown site, finding that ejecta from the impact crater was present at the sample location.

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  • The study investigates how delayed follow-up visits during the COVID-19 pandemic impacted serum TSH levels in patients treated with levothyroxine, finding a correlation between delays and elevated TSH levels.
  • It analyzed data from over 25,000 patients in Japan who had either scheduled or delayed follow-up visits and considered factors like age, sex, and dosage of medication.
  • Results showed that delayed visits, especially those over 30 days, led to significantly higher risks of elevated TSH levels, indicating poorer control of thyroid disease during the pandemic.
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Herein, we report the preparation and characterization of BaBi clarified by DC magnetic susceptibility, powder X-ray diffraction (XRD), and electrical transport. The superconducting properties of BaBi were elucidated through the magnetic and electrical transport properties in a wide pressure range. The superconducting transition temperature, , showed a slight decrease (or almost constant ) against pressure up to 17.

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The crystal structures of SbTeSe(= 0.6 and= 1.2) at 0-24 GPa were investigated by synchrotron x-ray diffraction.

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A 70-year-old man visited our hospital with a chief complaint of involuntary movements, diagnosed as chorea, involving the right upper and lower limbs. Brain MRI showed acute cerebral infarctions involving the left insular and parietal cortices. Chorea is usually due to dysfunction of components of the basal ganglia pathways, such as the caudate nucleus or subthalamic nucleus, and is rarely caused by lesions of the insular or parietal cortex.

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Background: Thyroid stimulating hormone receptor antibody (TRAb) is detected in the serum of patients with Graves' disease (GD). This study aims to investigate the prevalence of euthyroid individuals showing positive results for TRAb and to clarify the clinical course of thyroid function and TRAb levels in these subjects.

Objective: Subjects were female patients who newly visited our hospital for a screening test prior to fertility treatment and showed normal thyroid function and volume without nodules between 2014 and 2017.

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