Hyperlipidemia: Lipids and Lipoproteins
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Questions and Answers

Which lipoprotein is secreted from the liver to carry endogenous triglycerides into the blood circulation?

  • LDL
  • VLDL (correct)
  • HDL
  • Chylomicron

Which lipoprotein carries cholesterol from peripheral tissues and blood circulation to the liver for metabolism and/or secretion?

  • Chylomicron
  • HDL (correct)
  • VLDL
  • LDL

Which lipoprotein is secreted from the liver to carry endogenous cholesterol into the blood circulation?

  • LDL (correct)
  • Chylomicron
  • HDL
  • VLDL

What is correlated with coronary heart disease?

<p>Elevated levels of very low density lipoprotein (VLDL) (C)</p> Signup and view all the answers

Which lipoprotein is listed as the most atherogenic?

<p>LDL (C)</p> Signup and view all the answers

What consists mostly of lipoproteins?

<p>Spherical complexes (B)</p> Signup and view all the answers

Which combination is a lipoprotein?

<p>Triglyceride and apolipoprotein (A)</p> Signup and view all the answers

Which type of cholesterol is commonly referred to as 'bad' cholesterol?

<p>Low-density lipoproteins (LDL) (D)</p> Signup and view all the answers

Which type of lipoprotein removes cholesterol from the bloodstream?

<p>High-density lipoproteins (HDL) (B)</p> Signup and view all the answers

Which lipoprotein carries cholesterol from peripheral tissues and blood circulation to the liver for metabolism and/or secretion?

<p>Very-low-density lipoproteins (VLDL) (A)</p> Signup and view all the answers

Which type of lipoprotein is secreted from the liver to carry endogenous triglycerides into the blood circulation?

<p>Very-low-density lipoproteins (VLDL) (B)</p> Signup and view all the answers

What is the primary mechanism of action of HMG CoA reductase inhibitors such as statins?

<p>Competitively inhibiting HMG CoA reductase (B)</p> Signup and view all the answers

Which of the following is NOT a commonly known statin?

<p>Gemfibrozil (D)</p> Signup and view all the answers

What effect do HMG CoA reductase inhibitors have on triglyceride levels?

<p>Decrease triglyceride levels (B)</p> Signup and view all the answers

What is the primary function of cell surface LDL receptors in the context of HMG CoA reductase inhibitors?

<p>To increase LDL catabolism (D)</p> Signup and view all the answers

What is the recommended time of day for giving statins?

<p>Evening (C)</p> Signup and view all the answers

What adverse effect is associated with statins?

<p>Myopathy and rhabdomyolysis (A)</p> Signup and view all the answers

What is the effect of statins on pregnancy?

<p>They are contraindicated during pregnancy (A)</p> Signup and view all the answers

What potential interaction may occur when using statins?

<p>Increased effect of warfarin (C)</p> Signup and view all the answers

Statins are the primary treatment option for hypercholesterolemia.

<p>True (A)</p> Signup and view all the answers

Statins should be given in the morning because major cholesterol synthesis happens at that time.

<p>False (B)</p> Signup and view all the answers

Pregnant and lactating women can safely take statins.

<p>False (B)</p> Signup and view all the answers

Elevated liver enzymes and myopathy are adverse effects associated with statins.

<p>True (A)</p> Signup and view all the answers

What is the most effective effect of niacin on lipoproteins?

<p>Reduction of LDL C by 20% (C)</p> Signup and view all the answers

Which adverse effect is commonly associated with the use of niacin?

<p>Elevated liver enzymes (B)</p> Signup and view all the answers

What is the mechanism of action of niacin?

<p>Inhibits lipolysis in adipose tissue (D)</p> Signup and view all the answers

What is the recommended action to prevent the intense cutaneous flush associated with niacin use?

<p>Take NSAIDs before administrating niacin (D)</p> Signup and view all the answers

In what condition should niacin be avoided or given with caution when used in combination with statins?

<p>Hepatic disease (D)</p> Signup and view all the answers

What is the therapeutic use of niacin in the treatment of familial hyperlipidemias?

<p>Reduces plasma levels of cholesterol and triglycerides (A)</p> Signup and view all the answers

Niacin reduces LDL C by 20%.

<p>True (A)</p> Signup and view all the answers

Niacin lowers triglycerides by 35%.

<p>True (A)</p> Signup and view all the answers

Niacin is the most effective agent for increasing HDL C.

<p>True (A)</p> Signup and view all the answers

Niacin inhibits lipolysis in adipose tissue, reducing production of free fatty acids.

<p>True (A)</p> Signup and view all the answers

Niacin is useful in the treatment of familial hyperlipidemias.

<p>True (A)</p> Signup and view all the answers

Niacin should be avoided in hepatic disease and used with caution with statins.

<p>True (A)</p> Signup and view all the answers

What is the mechanism of action of fenofibrate and gemfibrozil in regulating lipid metabolism?

<p>Activation of peroxisome proliferator activated receptors (PPARs) (A)</p> Signup and view all the answers

Which medication is most efficacious in lowering triglycerides?

<p>Fibric acid derivatives (D)</p> Signup and view all the answers

What is the primary therapeutic use of fibrates like fenofibrate and gemfibrozil?

<p>Treating familial hyperlipidemias (D)</p> Signup and view all the answers

What effect do fibrates like fenofibrate and gemfibrozil have on triglyceride concentrations?

<p>Decrease triglyceride concentrations (A)</p> Signup and view all the answers

What is the most common adverse effect associated with fibrate use?

<p>Gallstones (B)</p> Signup and view all the answers

Which adverse effect may occur in patients taking gemfibrozil and statins together?

<p>Myopathy (A)</p> Signup and view all the answers

What is the primary therapeutic use of niacin?

<p>Increasing HDL cholesterol (A)</p> Signup and view all the answers

What is the mechanism of action of fenofibrate and gemfibrozil in regulating lipid metabolism?

<p>Increasing HDL cholesterol (D)</p> Signup and view all the answers

What is the mechanism of action of bile acid binding resins?

<p>Promoting the excretion of bile acids in the feces (D)</p> Signup and view all the answers

What is the primary effect of bile acid binding resins on intracellular cholesterol concentrations?

<p>Causing hepatocytes to increase conversion of cholesterol to bile acids (C)</p> Signup and view all the answers

What is the primary benefit observed with bile acid binding resins in terms of lipid management?

<p>Substantial lowering of LDL cholesterol levels (C)</p> Signup and view all the answers

Which process is directly affected by the formation of a resin/bile acid complex with bile acid binding resins?

<p>Bile acid concentration in the small intestine (B)</p> Signup and view all the answers

What is the primary mechanism of action of bile acid binding resins?

<p>Enhancing the excretion of bile acids in feces (C)</p> Signup and view all the answers

What is the most common side effect associated with the use of bile acid binding resins?

<p>Impaired absorption of fat-soluble vitamins (C)</p> Signup and view all the answers

What is the primary therapeutic use of bile acid binding resins?

<p>Treating hypercholesterolemia (D)</p> Signup and view all the answers

What effect do bile acid binding resins have on triglyceride levels?

<p>Raising triglyceride levels in blood (A)</p> Signup and view all the answers

Bile acid binding resins are often used in combination with diet or niacin for treating type IIA and type IIB hyperlipidemias.

<p>True (A)</p> Signup and view all the answers

Bile acid sequestrants are absorbed and metabolically altered by the intestine after oral administration.

<p>False (B)</p> Signup and view all the answers

The most common side effects of bile acid binding resins include constipation, nausea, and flatulence.

<p>True (A)</p> Signup and view all the answers

Bile acid binding resins may impair the absorption of fat soluble vitamins and interfere with the absorption of many drugs.

<p>True (A)</p> Signup and view all the answers

Bile acid binding resins are absorbed and metabolically altered by the intestine after oral administration.

<p>False (B)</p> Signup and view all the answers

Niacin is indicated for type 2 diabetes due to its glucose lowering effects.

<p>True (A)</p> Signup and view all the answers

Bile acid binding resins may raise triglyceride levels and are contraindicated in patients with significant hypertriglyceridemia.

<p>True (A)</p> Signup and view all the answers

The most common side effects of bile acid binding resins include impaired absorption of fat-soluble vitamins (A, D, E, and K).

<p>True (A)</p> Signup and view all the answers

Ezetimibe selectively inhibits absorption of dietary and biliary cholesterol in the small intestine.

<p>True (A)</p> Signup and view all the answers

Niacin inhibits lipolysis in adipose tissue, reducing production of free fatty acids.

<p>True (A)</p> Signup and view all the answers

Bile acid binding resins are absorbed and metabolically altered by the intestine after oral administration.

<p>False (B)</p> Signup and view all the answers

Niacin is indicated for type 2 diabetes due to its glucose-lowering effects.

<p>False (B)</p> Signup and view all the answers

Omega 3 fatty acids are essential fatty acids used for triglyceride lowering.

<p>True (A)</p> Signup and view all the answers

The most common side effects of omega 3 PUFAs include constipation, nausea, and flatulence.

<p>False (B)</p> Signup and view all the answers

Bleeding risk can be increased in individuals concomitantly taking anticoagulants or antiplatelets with omega 3 PUFAs.

<p>True (A)</p> Signup and view all the answers

Niacin is contraindicated in hepatic disease and should be used with caution with statins.

<p>True (A)</p> Signup and view all the answers

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