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Related Concept Videos

Oral Hypoglycemic Agents: Biguanides and Glitazones01:26

Oral Hypoglycemic Agents: Biguanides and Glitazones

Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood glucose levels...
Oral Hypoglycemic Agents: Glinides01:06

Oral Hypoglycemic Agents: Glinides

Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively manages...
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors01:19

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are typically...
Hyperglycemia01:29

Hyperglycemia

Hyperglycemia is an abnormally high blood glucose level. It is diagnosed by fasting glucose ≥126 mg/dL, 2-hour oral glucose tolerance test (or OGTT) ≥200 mg/dL, random glucose ≥200 mg/dL with symptoms, or HbA1c ≥6.5%. However, HbA1c results may be unreliable in certain conditions, such as anemia or hemoglobinopathies, and the diagnosis should be confirmed unless classic symptoms are present. Postprandial hyperglycemia is typically considered significant when glucose levels exceed 180 mg/dL two...
Oral Hypoglycemic Agents: Sulfonylureas01:17

Oral Hypoglycemic Agents: Sulfonylureas

Sulfonylureas are oral hypoglycemic agents utilized in treating type 2 diabetes. They are characterized by their unique sulfonylurea chemical structure. The family of sulfonylureas is divided into generations. First-generation sulfonylureas, including tolbutamide (Orinase), chlorpropamide (Diabinese), and tolazamide (Tolinase), trigger insulin release from pancreatic β cells and enhance peripheral tissues' insulin sensitivity. The second-generation members, such as glipizide (Glucotrol),...
Dipeptidyl Peptidase 4 Inhibitors01:23

Dipeptidyl Peptidase 4 Inhibitors

Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a significant...

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Related Experiment Video

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Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
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Published on: January 31, 2022

The rough road for rosiglitazone.

Allison B Goldfine

    Current Opinion in Endocrinology, Diabetes, and Obesity
    |March 5, 2008
    PubMed
    Summary
    This summary is machine-generated.

    Rosiglitazone effectively lowers blood sugar in type 2 diabetes but may increase ischemic cardiovascular risk, especially when used with nitrates or insulin. Caution is advised for patients with heart disease.

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    Area of Science:

    • Cardiovascular safety of diabetes medications
    • Pharmacological interventions for type 2 diabetes

    Background:

    • Rosiglitazone is effective for glycemic control in type 2 diabetes.
    • Concerns exist regarding rosiglitazone's cardiovascular safety, including fluid retention and heart failure risk.
    • Long-term ischemic cardiovascular risk associated with rosiglitazone remains unclear.

    Discussion:

    • Meta-analyses of controlled trials suggest an increased risk of cardiovascular events with rosiglitazone.
    • Subgroup analyses indicate higher risk in patients using nitrates or insulin.
    • Uncertainty persists regarding the precise ischemic heart disease risk profile.

    Key Insights:

    • Cardiovascular event rates are low in controlled trials with rosiglitazone.
    • Increased ischemic risk may be concentrated in specific patient subgroups.
    • Careful consideration is needed for patients with pre-existing heart conditions.

    Outlook:

    • Further research is needed to fully elucidate the cardiovascular risks of rosiglitazone.
    • Clinical vigilance is essential when prescribing rosiglitazone, particularly in vulnerable patient populations.
    • Individualized treatment strategies are crucial for managing type 2 diabetes and cardiovascular risk.