The improvement of the diabetic equilibrium decreases the microvascular complications. Unfortunately, the HbA1c has tendency to increase with time and too few type 2 diabetic patients are well equilibrated with HbA1c under 7%. We have now new medicaments to improve this. The thiazolidinediones are agonists of the PPARgamma and ameliorate the insulin resistance with decrease of the HbA1c. Pioglitazone (Actos) and rosiglitazone (Avandia) are the two thiazolidinediones in Belgium. To be reimbursed, these medicaments have to be prescribed with sulfonylureas or metformin. The glinides are secretagogues drugs acting on the post-prandial glycaemia, but they improve the three parameters of diabetic equilibrium: fasting glycaemia, postprandial glycaemia and HbA1c. There is only one in Belgium: repaglinide (Novonorm). We can also improve the treatment by increasing the compliance. Therefore we can prescribe treatment with once daily dosage so as glimepiride (Amarylle) or gliclazide MR (Unidiamicron). Finally there are 'fixed combinations of two molecules so as glibenclamide + metformin (Glucovance) or rosiglitazone + metformin (Avandamet).
To evaluate the change in hemoglobin A1C (A1C) in patients with type 2 diabetes switched from coadministration of a sulfonylurea (SU), glyburide or glipizide, and metformin (SU+Met) to a single glyburide-metformin tablet.
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This study was designed to examine the survival in type 2 diabetics with proven coronary artery disease (CAD) receiving a combined glyburide/metformin antihyperglycemic treatment over a long-term follow-up period.
In this 16-week, multicenter, randomized, double-blind, 4-arm and parallel clinical trial study, 100 patients with type 2 diabetes mellitus were recruited and 76 patients were available for statistical analysis at the end of the study. After 1 week of placebo washout period, eligible patients were randomly assigned into 1 of 4 treatment groups: glyburide 5 mg b.i.d.; metformin 500 mg b.i.d.; glyburide/metformin 2.5 mg/500 mg b.i.d.; or glyburide/metformin 5.0 mg/500 mg b.i.d. The doses were titrated every 2 weeks to a maximum of 4 tablets per day if the patients fasting plasma glucose (FPG) still exceeded 140 mg/dL. Efficacy was evaluated by the changes from baseline in glycosylated hemoglobin (HbA1c) and FPG at week 16. Adverse events were recorded and summarized by treatment group.
Due to the poor flow properties of metformin hydrochloride, in order to attain the dose uniformity, a wet granulation based manufacturing process was used. The prepared tablets were evaluated for the release of metformin hydrochloride and glibenclamide using validated HPLC methods. The similarity factor was calculated, taking into consideration as reference profile the mean in vitro dissolution data of Glucovance. The formulation process was undertaken using a reproducible DoE generated model, attained by the variation of each of the formulation factors on two levels, followed by the filling of the data resulted from the analytical testing of the tablets.
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Although hyperaemic MBF did not differ significantly between the patients and controls (1.81 (0.38) v 1.97 (0.43) ml/min/g; mean (SD)), the CPT-induced MBF increase (DeltaMBF) was significantly less in diabetic patients than in controls (0.07 (0.07) v 0.25 (0.12) ml/min/g; p<0.001). Treatment with glyburide and metformin significantly decreased plasma glucose concentrations from 207 (76) to 134 (52) mg/dl (p<0.001). This decrease in plasma glucose was paralleled by a significant increase in DeltaMBF in response to CPT (0.20 (0.16) from 0.07 (0.07) ml/min/g; p<0.001), which tended to be lower than in controls at baseline (0.20 (0.16) v 0.25 (0.12) ml/min/g; p = NS). The decrease in plasma glucose concentrations correlated significantly with the improvement in DeltaMBF in response to CPT (r = 0.67, p<0.01).
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The model was fitted using Partial Least Squares method. For the assessment of the level of fitting, Q2, R2 and Anova tests were performed. The desired drug release pattern can be achieved by using a proper percent of superdesintegrant, by reducing the filler and by the presence of extragranulary added binder.
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The link between diabetes and poor pregnancy outcomes is well established. As in the non-pregnant population, pregnant women with diabetes can experience profound effects on multiple maternal organ systems. In the fetus, morbidities arising from exposure to diabetes in utero include not only increased congenital anomalies, fetal overgrowth, and stillbirth, but metabolic abnormalities that appear to carry on into early life, adolescence, and beyond. This article emphasizes the newest guidelines for diabetes screening in pregnancy while reviewing their potential impact on maternal and neonatal complications that arise in the setting of hyperglycemia in pregnancy.
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A retrospective, population-based observational study.
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The combination treatments were more effective than either monotherapy irrespective of baseline HbA1C, age or BMI in each trial. Antihyperglycaemic effects were greater in patients with HbA1C > or = 8% at baseline, especially with the combinations. The majority of hypoglycaemic symptoms with glibenclamide-containing treatments occurred in patients with HbA1C < 8% at baseline. Neither age nor BMI had a marked effect on the efficacy of the combination treatments, and there was no increase in hypoglycaemic symptoms in older patients.
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Adherence was measured by medication possession ratio; the proportion of days on which a patient had medication available.