Familial hypercholesterolemia and triglyceride metabolism

Area of Science:

• Cardiovascular Medicine
• Metabolic Disorders
• Genetics

Background:

• Familial hypercholesterolemia (FH) is a common genetic disorder causing severe hypercholesterolemia due to low-density lipoprotein (LDL) receptor defects.
• Untreated FH significantly increases the risk of premature coronary heart disease (CHD), with only 20% of affected men reaching age 70.
• Hypertriglyceridemia, both fasting and postprandial, is an established risk factor for atherosclerosis.

Purpose of the Study:

• To review current knowledge on triglyceride (TG) metabolism in the context of Familial hypercholesterolemia (FH).
• To analyze the relationship between TG levels and atherosclerosis development in FH patients.
• To discuss appropriate treatment strategies for FH patients with altered TG metabolism.

Main Methods:

• Literature review focusing on studies examining TG metabolism in FH.
• Analysis of clinical data linking TG levels, lipoprotein remnants, and atherosclerosis in FH.
• Examination of evidence from animal models (LDLR-deficient mice) of FH and atherosclerosis.

Main Results:

• FH is associated with impaired lipoprotein metabolism, contributing to premature atherosclerosis.
• Elevated TG-rich lipoprotein remnants and small dense LDL may promote atherogenesis in FH.
• Variations in FH clinical presentation may stem from diverse molecular defects.

Conclusions:

• TG metabolism plays a significant role in the accelerated atherosclerosis observed in FH.
• Further research into TG metabolism in FH is warranted to optimize therapeutic interventions.
• Personalized treatment approaches considering TG levels are essential for managing FH patients.