Publications by authors named "Masuzaki H"

A 59-year-old Japanese woman was referred for an extremely low level of circulating high-density lipoprotein cholesterol (HDL-C). The serum HDL-C level had long been within the normal range but suddenly decreased asymptomatically to 7 mg/dL. She had no typical symptoms associated with familial lecithin, cholesterol acyltransferase deficiency (FLD), including proteinuria, anemia, and corneal opacity.

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  • This text discusses the development of a machine learning model aimed at consistently classifying individuals with type 2 diabetes into specific subtypes based on Ahlqvist's classification, which is important for tailoring treatment strategies.
  • The model was tested using data from two cohorts: one with 619 Japanese individuals for training and testing, and another with 597 individuals for external validation, employing a random forest algorithm with 15 variables.
  • The results showed high accuracy, with a 94% success rate in predicting diabetes subtypes, indicating the model's strong potential for clinical application despite some inconsistencies in Ahlqvist's method over time.
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  • The study aimed to explore the link between stopping treatment and the development or worsening of diabetic retinopathy (DR) in Japanese type 2 diabetes patients.
  • Data was collected from two hospitals, tracking 417 patients over a median of 7 years, comparing those who stopped treatment for at least 12 months with those who continued.
  • Results showed a 13% treatment cessation rate, which significantly increased the risk of developing DR, indicating that ceasing treatment is a major risk factor for this condition.
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  • The study investigates the progression of chronic kidney disease in individuals with type 2 diabetes diagnosed at a young age (≤40 years) compared to those diagnosed later (>40 years) in a Japanese multicenter cohort.
  • Among 626 participants, young-onset type 2 diabetes is associated with a significantly lower incidence of reduced eGFR (<60 mL/min/1.73 m²) but a higher incidence of proteinuria compared to late-onset diabetes.
  • The findings suggest that young-onset type 2 diabetes has a distinct progression pattern, showing less risk for eGFR decline but greater risk for developing proteinuria compared to late-onset cases.
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In Japan, the traditional method for measuring plasma aldosterone concentration (PAC) was radioimmunoassay (RIA), which had several challenges, including poor traceability of certified reference materials and reduced detection sensitivity at low concentrations. To overcome these issues, a chemiluminescent enzyme immunoassay (CLEIA) for PAC measurement was introduced in April 2021 and the Japan Endocrine Society published new guidelines for primary aldosteronism (PA). This study aimed to evaluate the impact of the transition from RIA to CLEIA for PAC measurement on PA diagnosis.

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Aim: The present cohort study explored whether specific gut microbiota (GM) profile would predict the development of impaired glucose tolerance (IGT) in individuals with normal glucose tolerance (NGT).

Methods: A total of 114 study subjects with NGT in Kumejima island, Japan participated in the present study and underwent 75 g oral glucose tolerance tests at baseline and one year later. We compared the profile of GM at baseline between individuals who consistently maintained NGT (NRN, n = 108) and those who transitioned from NGT to IGT (NTI, n = 6).

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Post-traumatic pituitary stalk transection syndrome (PSTS) is an extremely rare cause of combined pituitary hormone deficiency (CPHD), affecting approximately 9 per 100,000 cases of traumatic brain injury. In contrast, pituitary stalk interruption syndrome (PSIS) is also a rare cause of CPHD. Importantly, these conditions are often confused due to their similar names and resembling findings on magnetic resonance imaging (MRI).

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Introduction: It remains unclear whether increased perirenal fat (PRF) accumulation is equally related to renal involvement in patients with and without diabetes mellitus (DM). We evaluated the association between PRF volume (PRFV) and low glomerular filtration rate (GFR) and proteinuria in people with or without type 2 diabetes mellitus (T2DM).

Research Design And Methods: We performed a cross-sectional analysis of 473 individuals without T2DM (non-DM, n=202) and with T2DM (DM, n=271).

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We investigated the impact of the Coronavirus disease 2019 (COVID-19) pandemic on the management of endocrine and metabolic disorders in Japan. We conducted a cross-sectional nationwide questionnaire survey targeting board-certified endocrinologists under the auspices of the Japan Endocrine Society. The questionnaire consisted of multiple-choice questions and open-ended responses.

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  • - The study examines how epicardial adipose tissue volume (EATV) relates to left atrial size in patients with sinus rhythm (SR) and atrial fibrillation (AF), while focusing on sex differences.
  • - Results showed that, in patients with SR, EATV had a positive correlation with left atrial size (LAVI) in men, but no correlation in women; in AF patients, women showed a negative correlation, while men had no significant correlation.
  • - The findings suggest that EATV may influence sex differences in the relationship to cardiovascular conditions, offering insights into the differing impacts on men and women in the context of AF and cardiac health.
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Introduction: This study aimed to evaluate the impacts of dapagliflozin on 24-hour glucose variability and diabetes-related biochemical variables in Japanese patients with type 2 diabetes who had received basal insulin supported oral therapy (BOT).

Research Design And Methods: Changes in mean daily blood glucose level before and after 48-72 hours of add-on or no add-on of dapagliflozin (primary end point) and diabetes-related biochemical variables and major safety variables during the 12 weeks (secondary end point) were evaluated in the multicenter, randomized, two-arm, open-label, parallel-group comparison study.

Results: Among 36 participants, 18 were included in the no add-on group and 18 were included in the dapagliflozin add-on group.

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  • Adult T-cell leukemia/lymphoma (ATLL) is a type of T-cell cancer linked to the HTLV-1 virus, characterized by specific immunophenotypes outlined by the 2017 WHO classification which includes several positive and negative markers.
  • A study assessing immunohistochemical profiles in 117 ATLL cases revealed that 20% did not fit the typical immunophenotype, with significant findings such as high rates of TCR negativity and associations between specific markers and morphological characteristics.
  • No single immunophenotypic marker was found to be predictive of overall survival in ATLL patients, highlighting the complexity of the disease and the need for further research into its diverse profiles.
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  • A study was conducted to investigate the link between undernutrition and sarcopenia risk in patients with type 2 diabetes using GNRI and CONUT assessments.
  • The research involved 479 Japanese individuals with a median age of 71, finding that GNRI was more effective than albumin and CONUT in diagnosing sarcopenia.
  • The study concluded that GNRI has strong diagnostic power and suggested that more extensive future research is needed to confirm its effectiveness in identifying undernourished individuals at risk for sarcopenia.*
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Definitive differences in blood metabolite profiles between obese and non-obese Type 2 diabetes (T2D) have not been established. We performed an LC-MS-based non-targeted metabolomic analysis of whole blood samples collected from subjects classified into 4 types, based on the presence or absence of obesity and T2D. Of the 125 compounds identified, 20, comprising mainly nucleobases and glucose metabolites, showed significant increases or decreases in the T2D group.

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Background: Atezolizumab plus bevacizumab therapy was recently introduced as the first line for unresectable advanced hepatocellular carcinoma (HCC), but immune-related adverse events (IrAEs) due to atezolizumab are a great concern. Here, we report the case of a patient who developed fatal acquired coagulation factor deficiency after hepatectomy for HCC, treated with atezolizumab and bevacizumab before surgery.

Case Presentation: A 70-year-old man received right trisegmentectomy of the liver with hepaticojejunostomy for advanced HCC with bile duct invasion, after atezolizumab and bevacizumab therapy.

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Numerous studies have revealed distinct differences in the profiles of gut microbiota between non-obese and obese individuals. To date, however, little is known if any disparities in the community of gut microbiota exist between metabolically healthy obese (MHO) and metabolically unhealthy obese (MUO) subjects. We therefore aimed to comprehensively characterize the gut microbiota and circulating metabolites in serum from both MHO and MUO residing in the remote island, Kumejima, where the prevalence of obesity is one of the highest in Japan, and explored possible correlations between the gut microbiota profile and markers of metabolic syndrome.

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  • HTLV-1 is a virus causing chronic infection that can lead to adult T-cell leukemia (ATL), and while T-cells help in immune response, the role of antibodies in defense isn't fully understood.
  • A study measured levels of neutralizing and ADCC-inducing antibodies in asymptomatic carriers (ACs) and ATL patients, revealing lower neutralizing antibodies in ATL patients compared to ACs, but similar ADCC activity between the two groups.
  • Results imply that neutralizing and ADCC-inducing antibodies may have a protective function during HTLV-1 infection, as they can reduce HTLV-1 infected cells when combined with natural killer cells.
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Unlabelled: Childhood obesity is rapidly increasing worldwide and is largely the consequence of adoption of unhealthy diets excessive in calories and salt (NaCl) as well as devoid in pivotal micronutrients such as potassium (K) and magnesium (Mg). Education-based programs aiming to encourage healthy food knowledge and behaviors are crucial at a young age, and for this purpose, convenient ways to assess daily dietary intake are warranted. We therefore attempted to evaluate the dietary intake of Okinawan schoolchildren in Japan by analyzing a series of biomarkers in morning spot urine samples and explore whether these biomarkers correlate with body weight and a series of metabolic parameters.

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Clinically amyopathic dermatomyositis (CADM) lacks muscle symptoms, associated with rapidly progressive interstitial lung disease. Anti-melanoma differentiation-associated gene 5 (MDA-5) antibody has been identified as a disease-labelling autoantibody. We report two cases of CADM manifested after the allogeneic haematopoietic stem cell transplantation (allo-HSCT)-Case 1: a 56-year-old man with acute leukaemia received the allo-HSCT and Case 2: a 45-year-old female patient with lymphoma received the allo-HSCT.

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Context: Previous studies have assessed the usefulness of data-driven clustering for predicting complications in patients with diabetes mellitus. However, whether the diabetes clustering is useful in predicting sarcopenia remains unclear.

Objective: To evaluate the predictive power of diabetes clustering for the incidence of sarcopenia in a prospective Japanese cohort.

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(1) Background: Evidence has accumulated regarding the etiology of lower urinary tract symptoms associated with obesity and metabolic syndrome. Therefore, the present study aimed to identify which subjectively and objectively measured voiding parameters were associated with obesity in a community-based population. (2) Methods: Voiding parameters on a self-administered questionnaire and a digital self-health monitoring system for urine excretion (s-HMSU) were compared between participants with and without obesity, defined as a body mass index ≥ 25 kg/m2 (n = 30 and 29, respectively), from a community in Okinawa, Japan.

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Accumulating evidence to date suggests that brown rice is superior to white rice in regard to its beneficial impact on a number of risk factors of the metabolic syndrome (MetS). However, little is known about the influence of fermented brown rice beverage on the gut microbiota in humans. We therefore hypothesized that its impact would beneficially alter the gut microbiota composition of patients with MetS.

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Background: Clinical or epidemiological conclusions remain undecided on the direct effects of active and second-hand smoking during pregnancy on childhood obesity. Urinary cotinine (UC) concentration, an accurate and quantitative marker for smoking, may elucidate the dose-dependent relationship between smoking during pregnancy and childhood obesity. To analyze the relationship between UC concentration and smoking questionnaire (SQ) classes for active and second-hand smoking in pregnant mothers and trajectory of infant Kaup index (body mass index: BMI).

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  • Adult T-cell leukemia/lymphoma (ATL) cells express a receptor called TNF receptor type-2 (TNFR2) and release its soluble form (sTNFR2) into the bloodstream, which is significantly elevated in patients with acute ATL.
  • The study investigated plasma sTNFR2 levels in a large group of ATL patients and asymptomatic carriers of the HTLV-1 virus, comparing them to other candidate biomarkers like sCD25, sOX40, and IL-10.
  • Results showed that higher sTNFR2 levels are strongly linked to acute ATL diagnosis and could be used alongside other biomarkers for better diagnostic accuracy.
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