Publications by authors named "Kazuyuki Miyashita"

Abnormalities in plasma lipoproteins observed in patients with diabetes promote atherosclerosis. However, the association between various lipid species and classes and atherosclerosis remains unclear. Here, we aimed to identify the plasma lipid characteristics associated with atherosclerosis progression in patients with diabetes.

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Glial cells missing transcription factor 2 () is one of the genes responsible for isolated hypoparathyroidism. Most cases of hypoparathyroidism caused by pathogenic variants result from homozygous or compound heterozygous loss-of-function variants, with only a limited number of heterozygous variants reported. A 24-year-old woman with recurrent tonic convulsions was admitted to our hospital.

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Pheochromocytoma/paraganglioma (PPGL) is a rare neuroendocrine tumor with metastatic potential. Peptide receptor radionuclide therapy with Lu-DOTATATE, a radiolabeled somatostatin analog, has been used for the treatment of somatostatin receptor-positive PPGLs and has shown promising efficacy and generally mild toxicity. However, rare instances of fatal crises following treatment have been reported.

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Introduction: Despite the increasing number of studies using machine learning to develop individualized treatment strategies, only a few have been conducted in patients with type 1 diabetes. This study aimed to identify the characteristics of Japanese patients with type 1 diabetes, classified into subgroups using data-driven cluster analysis based on pancreatic beta-cell function, obesity, and glycemic control, and clarify the association between these subgroups and diabetic complications.

Materials And Methods: In this cross-sectional study, a cluster analysis using three variables (C-peptide, body mass index, and glycated hemoglobin) in 206 Japanese patients with type 1 diabetes was performed.

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A 70-year-old man developed anorexia, general malaise, and hyponatremia with a serum sodium level of 120 mEq/L after the fifth cycle of pembrolizumab administration for bladder cancer. A rapid adrenocorticotropic hormone (ACTH) loading test result was within the normal range (basal and peak cortisol levels of 8.2 μg/dL and 20.

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Immune checkpoint inhibitor (ICI)-related type 1 diabetes mellitus (T1DM) is a severe immune-related adverse event (irAE), occurring in < 1% of cases. ICI-related T1DM typically progresses more rapidly than conventional acute-onset T1DM, but is slower than conventional fulminant T1DM, suggesting different processes of onset and progression. Positivity rates for glutamic acid decarboxylase (GAD) antibodies differ, with ICI-related T1DM showing a lower positivity rate than conventional acute-onset T1DM.

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Article Synopsis
  • Cortisol-producing adrenal adenomas are typically made up of lipid-rich clear cells, which show low CT values and high uptake on specific imaging tests.
  • A case study detailed a 27-year-old woman with Cushing syndrome caused by an atypical adrenal tumor predominantly composed of lipid-poor compact cells.
  • This rare presentation underscores the need for consideration of different cell compositions in diagnosing adrenal adenomas, as they can lead to unique imaging characteristics.
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Unlabelled: Immune checkpoint inhibitor (ICI)-related type 1 diabetes is an immune-related adverse event (irAE), occurring in slightly less than 1% of patients undergoing ICI therapy. Most cases develop during ICI treatment, with occurrences long after discontinuation being extremely rare. A 76-year-old woman, with no history of glucose tolerance issues, was diagnosed with lung adenocarcinoma with pleural invasion and underwent chemotherapy, including atezolizumab, an anti-programmed death-ligand 1 antibody.

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We have developed a series of 2-monoaryl-5-diarylmethylene analogs of the green fluorescent protein chromophore to study their viscosity-induced emission (VIE) properties. The analogs were synthesized by a condensation with methyl imidate and N-(diarylmethylene)glycinate. Among the analogs, the N-methylpyrrol-2-yl-substituted analog 1h induced the most remarkable VIE behavior in triglyceride and lipid bilayers probably due to the high π-electron-rich property of the pyrrole ring.

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Background: This study aimed to evaluate the changes in glycemic control and diabetic complications over time in Japanese patients with juvenile-onset type 1 diabetes mellitus and to clarify the factors associated with the progression of diabetic complications.

Methods: We tracked 129 patients with type 1 diabetes mellitus (21.8 ± 4.

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Aims/introduction: Hypertriglyceridemia is common in patients with diabetes. Although the fatty acid (FA) composition of triglycerides (TGs) is suggested to be related to the pathology of diabetes and its complications, changes in the fatty acid composition caused by diabetes treatment remain unclear. This study aimed to identify short-term changes in the fatty acid composition of plasma triglycerides after diabetes treatment.

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To evaluate whether continuous subcutaneous insulin infusion attenuates the progression of diabetic complications, we retrospectively extracted data from 35 individuals who had developed type 1 diabetes mellitus aged ≤20 years and whose treatment had been changed from multiple daily injections to continuous subcutaneous insulin infusion. The annual changes in estimated glomerular filtration rate, urinary albumin excretion rate, carotid intima-media thickness and brachial-ankle pulse wave velocity during each treatment period were calculated. Although mean glycated hemoglobin under the continuous subcutaneous insulin infusion treatment was lower than that under the multiple daily injection treatment, there were no significant differences in annual changes in diabetic nephropathy and atherosclerosis between the two treatment periods.

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Aims/introduction: Diabetes patients develop a variety of metabolic abnormalities in addition to hyperglycemia. However, details regarding change in various metabolites after comprehensive diabetes treatment remain unknown. This study aimed to identify the short-term change in metabolome in inpatients who were subject to comprehensive diabetes treatment, using gas chromatography/mass spectrometry-based non-target metabolomics techniques.

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Recently, it is widely recognized that microinflammation plays important roles in the pathophysiology of metabolic diseases, especially obesity-related disorders, diabetes and their complications. Lipopolysaccharide-binding protein (LBP) is a liver-derived acute-phase protein responsive to lipopolysaccharides (LPS) produced by gram-negative bacteria, thus reflects the systemic inflammation caused by the infection of those bacteria including gut dysbiosis. In this study, we evaluated the plasma LBP levels and investigated its clinical significance in 67 Japanese patients with type 1 diabetes.

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Pancreas transplantation (PTx) has been performed worldwide for patients with type 1 diabetes accompanied with end-stage renal disease or uncontrollable glycemic fluctuation. Nevertheless, risk factors of posttransplant glucose intolerance, which is responsible for progress of diabetic complications, remains unclear, especially in cases without pancreatic graft function loss. Therefore, this study was conducted to search for predictive factors of future glucose tolerance in PTx recipients without pancreatic graft function loss.

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The newly designed green fluorescent protein (GFP) chromophore analog, bar-DAIN, which has a 2-biaryl-conjugated 5-(diphenylmethylene)imidazolinone structure, was effectively synthesized using the Suzuki coupling reaction. Bar-DAIN showed environment-dependent fluorescence behavior; for example, the thienyl analog emitted yellow-green fluorescence in viscous solution (λ: 535 nm), yellow-orange fluorescence in suspension (λ: 551 nm), and cyan fluorescence in a powder state (λ: 497 nm) although it showed almost no emission in common solvents such as dichloromethane. The dynamic discoloration of the fluorescence was observed by changing environmental conditions from suspension to viscous.

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Recent progress in research on glucagon and α-cells highlights their pathophysiological roles in diabetes. We previously showed that plasma glucagon levels measured by newly developed enzyme-linked immunosorbent assay were dysregulated in patients with type 1 diabetes with respect to plasma glucose levels, suggesting dysregulated secretion. In the current study, the annual change in plasma glucagon levels was assessed in these same patients.

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The objective of the present study was to investigate the correlations between serum undercarboxylated osteocalcin (ucOC) or osteocalcin (OC) concentrations and %body fat, serum adiponectin and free-testosterone concentration, muscle strength and dose of exogenous insulin in patients with type 1 diabetes. We recruited 73 Japanese young adult patients with childhood-onset type 1 diabetes. All participants were receiving insulin replacement therapy.

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Aims: Tissue accumulatedadvanced glycation end products (AGEs) can be evaluated non-invasively by an autofluorescence reader as skin autofluorescence (skin AF)·The present study investigated whether skin AF is associated with diabetic micro- and macroangiopathies in Japanese patients with type 2 diabetes mellitus (T2DM).

Methods: Skin AF was measured in 193 enrolled Japanese patients with T2DM and 24 enrolled healthy non-diabetic subjects by using the AGE reader®. Diabetic micro- and macroangiopathies were evaluated in the T2DM patients.

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Currently, the clinical dynamics of glucagon need to be revised based on previous data obtained from conventional glucagon radioimmunoassays. In the present study, we evaluated plasma glucagon levels in type 1 diabetes patients using a newly-developed sandwich enzyme-linked immunosorbent assay, and its association with clinical parameters and markers of diabetes complications were statistically assessed. The plasma glucagon level in 77 Japanese type 1 diabetes patients was 28.

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We have developed a novel analog of the GFP chromophore: geo-DAIN. Since geo-DAIN is equipped with an E/Z-photoisomerizable geometrical diarylmethylene moiety instead of benzylidene of the GFP chromophore, different-colored reversible emissions are expected. We synthesized geo-DAIN by a condensation with methyl imidate and N-(diarylmethylene)glycinate.

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Diarylmethylenated and cholestene (or -tane)-hybrid analogues of the GFP chromophore, namely, Ch-DAINs were successfully synthesised by a condensation reaction between methyl imidates and N-(diarylmethylene)glycinates. Among the Ch-DAINs synthesised, a diphenyl-type analogue showed viscosity-dependent and cholesterol-responsive fluorescent properties. It showed a nearly linear increase of the fluorescence emission in triglycerides and vesicles as the amount of cholesterol was increased.

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Pdx1, a β-cell-specific transcription factor, has been shown to play a crucial role in maintaining β-cell function through transactivation of β-cell-related genes. In addition, it has been reported that the expression levels of Pdx1 are compromised under diabetic conditions in human and rodent models. We therefore aimed to clarify the possible beneficial role of Pdx1 against β-cell failure and generated the transgenic mouse that expressed Pdx1 conditionally and specifically in β cells (βPdx1) and crossed these mice with Ins2 diabetic mice.

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Aims/introduction: The aim of the present study was to examine the short- and long-term effect of sitagliptin on glucose tolerance after near normalization of glycemic control with insulin in poorly controlled type 2 diabetic patients.

Materials And Methods: We consecutively enrolled a total of 30 type 2 diabetic patients whose glycated hemoglobin levels (National Glycohemoglobin Standardization Program) were ≥7.4%, stopped all oral antidiabetic drugs and started insulin therapy.

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The aim of this study was to examine the possible association of vitamin D deficiency with diabetic retinopathy in 75 young Japanese type 1 diabetic patients. A multivariate regression analysis, duration of diabetes and vitamin D deficiency were independent determinants of diabetic retinopathy.

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