High-Density Lipoprotein

Transports excess cholesterol from peripheral tissues back to the liver for excretion or reuse, often referred to as 'good cholesterol' due to its protective role against atherosclerosis.

Key Functions:

• Mediates reverse cholesterol transport.
• Removes cholesterol from arterial plaques.
• Possesses anti-inflammatory and antioxidant properties.

Interacting Systems & Components:

• Cholesterol (transports)
• Liver (delivers cholesterol to)
• Apolipoproteins (structural and functional components)
• Arteries (protects against atherosclerosis)
• Lecithin-Cholesterol Acyltransferase (LCAT, esterifies cholesterol in HDL)