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The study sample comprised 2,275 diabetic patients, aged 45-74 years, with proven CAD, who were screened but not included in the bezafibrate infarction prevention study. In addition, 9,047 nondiabetic patients with CAD represented a reference group. Diabetics were divided into four groups on the basis of their therapeutic regimen: diet alone (n = 990), glyburide (n = 953), metformin (n = 79), and a combination of the latter two (n = 253).
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Longitudinal data from a large claims database were used to assess adherence from January 1, 2000, to December 31, 2001. Propensity scoring methods were used to mitigate concerns related to non-random assignment of patients to treatments.
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To study glycemic control before and after initiation of secondary antihyperglycemic therapy to better understand the pace and patterns of therapeutic failure and clinical responses to failure.
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Gestational diabetes mellitus (GDM) is a major public health concern because of rising rates and offspring consequences; yet, expert panels are in complete disagreement on how to diagnose and optimally treat GDM. This review underscores why there remains no diagnostic standard, no agreement on whether excess dietary carbohydrate or fat should be reduced, and whether oral hypoglycemic therapy is safe given the unknown offspring effects on hepatic, pancreatic, or fat development.
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To evaluate the efficacy and safety of glyburide/metformin combined tablet compared to glyburide or metformin alone in patients with type 2 diabetes.
An 18-year-old Spanish Mustang mare was referred for evaluation of progressive weight loss and persistent hyperglycemia. Clinicopathologic abnormalities included marked hyperglycemia and glycosuria. Serum cortisol concentration was appropriately decreased following administration of dexamethasone, indicating that the horse did not have pituitary pars intermedia dysfunction. Serum insulin and plasma C-peptide concentrations were low, suggesting that hyperglycemia was a result of decreased secretion of insulin by pancreatic beta cells. In addition, glucose concentration did not return to the baseline concentration until 5 hours after i.v. administration of a glucose bolus, suggesting that insulin secretion, insulin effect, or both were reduced. However, i.v. administration of insulin caused only a slight decrease in the plasma glucose concentration, giving the impression that the action of insulin was impaired. Within 5 hours after administration of a combination of glyburide and metformin, which is used to treat diabetes mellitus in humans, the glucose concentration was within reference limits. The horse was euthanized, and a postmortem examination was done. Immunohistochemical staining of sections of the pancreas revealed attenuation of the pancreatic islet beta-cell population, with beta cells that remained generally limited to the periphery of the islets. These findings indicate that, albeit rare, pancreatic beta-cell failure may contribute to the development of diabetes mellitus in horses.
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The adoption of the new American Diabetes Association diagnostic criteria for GDM was rejected by ACOG and not endorsed by the NIH. Yet, varying criteria are used by different centers resulting in confusion for both patient care and research. Both maternal diet and agents that cross the placenta could potentially modify offspring gene expression. Better identification and treatment of mothers and fetuses at risk may have far-reaching implications for maternal and child health.
Type 2 diabetes mellitus is characterized by both insulin deficiency and insulin resistance. Effective treatment often requires therapy directed at both abnormalities. Patients on monotherapy might benefit from a combination agent such as glyburide/metformin, which increases insulin secretion and reduces insulin resistance.
The results of this study suggest that in type 2 diabetic patients with an A1C >or=8%, switching from coadministration of a sulfonylurea plus metformin to combination glyburide-metformin tablets may provide an improvement in glycemic control in the range of a 1.2 to 1.4 absolute percentage point decrease in A1C. A randomized, prospective trial comparing these 2 methods of treatment is needed, however, to determine the precise effect provided by the unique formulation of glyburide in the glyburide-metformin tablet.
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New diagnostic criteria proposed by the American Diabetes Association would triple the prevalence of GDM (∼18%). Whether the treatment of women with these milder degrees of hyperglycemia will improve pregnancy outcomes is unknown given the powerful effect of obesity alone on excess fetal growth. There are data that restricting carbohydrate in the diet by substituting fat to blunt postprandial glucose levels may worsen maternal insulin resistance and that metformin may increase offspring subcutaneous fat.
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After 24 weeks, therapy with glyburide/metformin plus rosiglitazone resulted in a greater reduction in HbA1C levels (-1.0%, P<0.001) compared with combination therapy that included placebo, and in a larger proportion of patients (42% vs. 14%) who attained levels <7%. The difference in fasting plasma glucose levels between groups was -48 mg/dL (P<0.001), favoring glyburide/metformin plus rosiglitazone. The adverse event profile in the rosiglitazone-treated group included mild-to-moderate edema (8%), hypoglycemia (22%), and weight gain of 3 kg. No patient experienced hypoglycemia requiring third-party assistance.
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A total of 1856 patients from three randomized, double-blind, multicentre, parallel-group clinical trials were stratified at baseline according to HbA1C (< 8% or > or = 8%), age (< 65 years or > or = 65 years) and body mass index (BMI; < 28 kg/m2 or > or = 28 kg/m2). The effects of study treatments on HbA1C and the incidence of hypoglycaemic symptoms were determined in each subgroup.
A sulfonylurea--usually glyburide--plus metformin constitute the most widely used oral antihyperglycemic combination in clinical practice. Both medications present undesirable cardiovascular effects. The issue whether the adverse effects of each of these pharmacologic agents may be additive and detrimental to the prognosis for coronary patients has not yet been specifically addressed.