Quiz on Diabetes Pathophysiology

What is diabetes mellitus primarily characterized by?

• High levels of glucagon

• Increased sensitivity to insulin

• Defect in blood glucose regulation by insulin

• Excessive insulin production

Which type of diabetes is most prevalent in the Mexican population?

• Type 1 diabetes

• MODY diabetes

• Type 2 diabetes

• Gestational diabetes

What is the primary function of pancreatic β-cells?

• Secretion of pancreatic polypeptide

• Secretion of somatostatin

• Secretion of glucagon

• Secretion of insulin

What is a common consequence of hyperglycemia in diabetes?

• Increased insulin sensitivity

• Enhanced insulin secretion

• Cellular apoptosis

• Decreased blood glucose levels

Which receptor is primarily involved in insulin signaling?

• Insulin receptor

• IGF-1 receptor

• GLUT4 transporter

• GLUT2 transporter

What is the role of GLUT2 in insulin secretion?

• Increases insulin resistance

• Facilitates glucose transport into β-cells

• Stimulates glucagon release

• Inhibits insulin release

What is the main cause of type 1 diabetes?

• Obesity

• Autoimmune destruction of β-cells

• Insulin resistance

• Genetic mutations

Which cytokine is known to induce apoptosis in β-cells?

• IL-6

• IFNγ

• IL-1β

• TNF

What is the effect of glucotoxicity on β-cells?

• Enhances insulin secretion

• Increases insulin sensitivity

• Induces cell death

• Promotes cell proliferation

What is the primary mechanism of action for sulfonylureas?

• Enhance glucose uptake in tissues

• Inhibit glucagon release

• Stimulate insulin secretion from β-cells

• Increase insulin sensitivity