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Atherogenesis
| Question | Answer |
|---|---|
| First step of atherogenesis | Damage to endothelium of blood vessels |
| Damage to endothelium of blood vessels | Deposition of LDL's in intima |
| Deposition of LDL's in intima | Oxidation of LDL's by free radicals |
| Oxidation of LDL's by free radicals | Macrophages phagocytose LDL's via scavenger receptors |
| Macrophages phagocytose LDL's via scavenger receptors | Disregulated uptake of LDL's by macrophages |
| Disregulated uptake of LDL's by macrophages | Macrophage becomes foam cell |
| Macrophage becomes foam cell | Formation of fatty streak and PDGF produced |
| Formation of fatty streak and PDGF produced | Plaque forms and proliferation of smooth muscle cells |
| Plaque forms and proliferation of smooth muscle cells | Migrates to subendothelium |
| Migrates to subendothelium | Fibrous cap forms |
| Fibrous cap forms | Unstable plaque |
| Unstable plaque | Occlusion, preocclusion or rupture |
| rupture | Atheroembolism, Occluding thrombus of thromboembolism |