Publications by authors named "Michihiro Matsuki"

Aim: To compare the clinical usefulness of once-weekly glucagon-like peptide-1 receptor agonists dulaglutide and semaglutide at the doses approved for use in Japanese patients with type 2 diabetes.

Methods: In total, 120 patients with glycated haemoglobin (HbA1c) ≥7% were randomly assigned to dulaglutide (n = 59) or semaglutide group (n = 61), and 107 participants (dulaglutide/semaglutide = 53/54) completed the 24-week trial. The primary endpoint was the difference of HbA1c level between the two groups at 24 weeks.

View Article and Find Full Text PDF

Objective To examine the association between glycemic control and the new onset of macroangiopathy in Japanese subjects with type 2 diabetes. Methods We examined seven-year follow-up data for 572 patients. We divided the subjects by the average of seven-year glycemic control based on the guidelines.

View Article and Find Full Text PDF

To evaluate the efficacy of azelnidipine and amlodipine on diabetic nephropathy and atherosclerosis, we designed a prospective and randomized controlled clinical study in type 2 diabetic patients with stable glycemic control with fixed dose of anti-diabetic medication. Although there was no difference in blood pressure between both groups, urinary albumin excretion and maximum carotid intima-media thickness were reduced in azelnidipine group, but not in amlodipine group. In addition, inflammatory cytokine levels were decreased only in azelnidipine group which possibly explains such beneficial effects of azelnidipine on urinary albumin excretion and carotid atherosclerosis.

View Article and Find Full Text PDF

Aim: To evaluate the efficacy of miglitol and mitiglinide alone or in combination on the metabolic profile and incretin secretion in Japanese type 2 diabetes patients.

Methods: Patients on diet and exercise with or without metformin, were randomized to receive either miglitol, mitiglinide, or a combination, three times daily for 12 weeks.

Results: At 12 weeks, HbA1c decreased significantly (p<0.

View Article and Find Full Text PDF

Pioglitazone preserves pancreatic beta-cell morphology and function in diabetic animal models. In this study, we investigated the molecular mechanisms by which pioglitazone protects beta-cells in diabetic db/db mice. In addition to the morphological analysis of the islets, gene expression profiles of the pancreatic islet were analyzed using laser capture microdissection and were compared with real-time RT-PCR of db/db and nondiabetic m/m mice treated with or without pioglitazone for 2 wk or 2 days.

View Article and Find Full Text PDF

A 29-year-old woman was diagnosed as having type 1 diabetes mellitus and received insulin aspart and NPH insulin (NovolinN). On day 22, she had leg edema and right abdominal pain. The serum hepatobiliary enzyme levels were markedly elevated.

View Article and Find Full Text PDF

The db gene homozygous, but not heterozygous, mice develop diabetes with severe beta-cell damage. We investigated the molecular mechanism underlying db gene-associated pancreatic beta-cell dysfunction. Islet morphology, beta-cell function, and gene expression profiles specific for pancreatic islet cells were compared among db gene homozygous(db/db), heterozygous (db/m) and unrelated m/m mice.

View Article and Find Full Text PDF

MIN6 cells retains glucose-stimulated insulin secretion (GSIS) as isolated islets. We comprehensively evaluated the gene expression and production of other islet hormones in MIN6 cells. Islet hormones were demonstrated by immunohistochemical staining and measured by ELISA.

View Article and Find Full Text PDF

Adiponectin is a fat-derived cytokine with anti-diabetic and anti-atherogenic properties. In this study, effects of sulfonylureas (SUs) on adiponectin production and the action mechanism were evaluated using 3T3-L1 adipocytes. The cells were incubated with glimepiride, glibenclamide, gliclazide, pioglitazone, metformin and the medium only as the control.

View Article and Find Full Text PDF

To compare the pharmacokinetic and pharmacodynamic effects of glimepiride between once- and twice-daily dosing in type 2 diabetic patients. Eight Japanese type 2 diabetic patients, who had been treated with 2 mg glimepiride alone over 4 weeks (age 40-70, body mass index View Article and Find Full Text PDF

A necessary condition of advocated criteria to determine the metabolic syndrome (MetS) in Japan is waist circumference (WC), which varies among races. In this study, we measured WC and visceral fat area (VFA) in subjects with type 2 diabetes (T2DM) and assessed the propriety of new criteria of MetS in Japan. Four hundred and nineteen patients (M/F: 258/161, age: 60.

View Article and Find Full Text PDF

Objective: The aim of this study was to investigate the effect of apolipoprotein (apo)E4 allele on plasma LDL cholesterol response to calorie-restricted diet therapy in type 2 diabetic patients.

Research Design And Methods: Twenty-four diabetic patients with the apoE3/3 genotype and 11 diabetic patients with the apoE4/3 genotype were recruited. Participants were hospitalized for calorie-restricted diet therapy (25.

View Article and Find Full Text PDF

In normal New Zealand white rabbits, immunization with rabbit lung ACE (angiotensin converting enzyme) induced atherosclerotic retinal changes, and glomerular changes similar to those seen in diabetic nephropathy. Also, in genetically diabetogenic rats, immunization with the rabbit lung ACE induced diabetic nephropathy and retinopathy.

View Article and Find Full Text PDF

In a random sample of 200 patients with type 2 diabetes mellitus, immunoreactivities to ACE (angiotensin converting enzyme) were measured by ELISA. Immunoreactivities were positive for 129 (64.5%) patients, and were positive in 30 (83.

View Article and Find Full Text PDF

Background: We previously showed that the apolipoprotein (apo) Eepsilon2 allele is associated with the progression of diabetic nephropathy. The aim of the present study is to further investigate the association between apo E genetic polymorphism, plasma lipid levels (particularly remnant lipoproteins), and diabetic nephropathy.

Subjects And Methods: One hundred fifty-eight patients with type 2 diabetes who had a duration of diabetes longer than 10 years were divided into the three apo E groups: apo E2 (n = 22), E3/3 (n = 102), and E4 (n = 34).

View Article and Find Full Text PDF