Mechanisms of atherogenesis

Area of Science:

• Cardiovascular Biology
• Atherosclerosis Research
• Primate Models

Background:

• Atherosclerosis development involves complex cellular and molecular events.
• Individual susceptibility to atherosclerosis can be influenced by factors beyond established risk factors.
• Nonhuman primates offer valuable models for studying diet-induced atherosclerosis.

Purpose of the Study:

• To elucidate individual differences in atherosclerosis susceptibility independent of known risk factors.
• To investigate the utility of nonhuman primates in understanding atherosclerosis mechanisms.
• To explore sex-based and psychosocial influences on atherosclerosis.

Main Methods:

• Utilizing nonhuman primate models, specifically cynomolgus and rhesus macaques.
• Examining diet-induced atherosclerosis and its relationship with social status and stress.
• Analyzing genetic contributions to plasma cholesterol response and lipoprotein metabolism.

Main Results:

• Cynomolgus macaques exhibit sex differences in atherosclerosis, mirroring human patterns.
• Social status and experimentally induced stress correlate with increased coronary artery atherosclerosis.
• Genetic factors account for approximately 75% of variability in cholesterol response to dietary cholesterol.
• Preliminary evidence suggests "mesenchymal susceptibility" in nonhuman primates.

Conclusions:

• Nonhuman primates are crucial for understanding individual variations in atherosclerosis.
• Genetic and psychosocial factors significantly contribute to atherosclerosis risk.
• Further research is needed to establish primate models for "mesenchymal susceptibility".