Lipoproteins

Definition

Lipoproteins are complexes made of lipids and proteins that transport fats through the bloodstream. They play a critical role in lipid metabolism and cardiovascular health.

5 Must Know Facts For Your Next Test

1. Lipoproteins are classified into different types based on their density: chylomicrons, VLDL, LDL, and HDL.
2. Low-Density Lipoprotein (LDL) is often referred to as 'bad cholesterol' because high levels can lead to plaque buildup in arteries.
3. High-Density Lipoprotein (HDL) is known as 'good cholesterol' because it helps remove other forms of cholesterol from the bloodstream.
4. Statins are a class of drugs commonly used to lower LDL levels and reduce the risk of cardiovascular disease.
5. Apolipoproteins are the protein components of lipoproteins that facilitate lipid transport and receptor recognition.

Review Questions

• What is the primary function of lipoproteins in the body?
• Why is LDL considered 'bad cholesterol' and HDL considered 'good cholesterol'?
• How do statins affect lipoprotein levels?

Related terms

Chylomicrons:

The largest type of lipoprotein responsible for transporting dietary triglycerides from the intestines to other tissues.

Apolipoproteins: Protein components within lipoproteins that assist in lipid transport and receptor binding.

Statins:

A class of drugs used to lower LDL cholesterol levels by inhibiting HMG-CoA reductase.