Lipoprotein associated with carrying cholesterol from peripheral tissues to liver is ?
**Core Concept**
The question is testing the student's knowledge of lipoprotein metabolism, specifically the role of different lipoproteins in transporting cholesterol within the body. The correct answer involves a lipoprotein that is responsible for carrying cholesterol from peripheral tissues to the liver, which plays a crucial role in maintaining cholesterol homeostasis.
**Why the Correct Answer is Right**
The correct answer is High-Density Lipoprotein (HDL). HDL is often referred to as "good cholesterol" because it helps remove excess cholesterol from peripheral tissues and transport it to the liver for excretion. This process is known as reverse cholesterol transport. HDL particles are rich in apolipoproteins, specifically ApoA1, which facilitates the binding and uptake of cholesterol by the liver.
**Why Each Wrong Option is Incorrect**
* **Option A:** Low-Density Lipoprotein (LDL) is actually responsible for transporting cholesterol from the liver to peripheral tissues, contributing to the development of atherosclerosis.
* **Option B:** Very-Low-Density Lipoprotein (VLDL) is involved in the transport of triglycerides from the liver to peripheral tissues, but it is not primarily responsible for carrying cholesterol to the liver.
* **Option D:** Chylomicrons are lipoproteins that transport dietary triglycerides from the small intestine to the liver and peripheral tissues, but they are not directly involved in the transport of cholesterol from peripheral tissues to the liver.
**Clinical Pearl / High-Yield Fact**
A high HDL cholesterol level is often associated with a reduced risk of cardiovascular disease, whereas low HDL levels are linked to an increased risk. This makes HDL a useful marker for assessing cardiovascular risk.
**Correct Answer:** C. High-Density Lipoprotein (HDL)