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  • Title: Importance of lipoprotein metabolism parameters in the clinical and angiographic severity of coronary artery disease.
    Author: Pereira MI, Rodrigues P, Azevedo J, Gil I, Silva D, Arroja I, Coucelo J, Vaz T, Araujo V, Morais M da G.
    Journal: Rev Port Cardiol; 2000 Jun; 19(6):655-71; discussion 673-7. PubMed ID: 10961093.
    Abstract:
    Coronary artery disease that is clinically and angiographically significant is associated to important biochemical parameters with direct interference in lipoprotein and apoprotein metabolism. The purpose of our study was to evaluate the importance of several lipoprotein metabolic parameters in the clinical and angiographic severity of chronic coronary artery disease. In a population with the diagnosis of ischemic coronary artery disease, we assessed the degree of angiographic (single- versus multivessel disease) and clinical (C.C.S. I-IV classification) severities. In each patient, we determined the value of total cholesterol, triglycerides, HDL and LDL cholesterol, HDL 2 and 3, apoprotein AI and B, lipoprotein (a), anti-phospholipid antibodies and C reactive protein. Our results showed that some parameters were significant in the comparison between a normal group and the global coronary artery disease population, such as the value of total cholesterol, HDL cholesterol, HDL 2, apoprotein AI and B lipoprotein (a) and anti-phospholipid antibodies. In the distinction of coronary artery disease subgroups, in relation to C.C.S. < or = 2 and > or = 3 classes, some factors could be discriminated, such as HDL cholesterol, HDL 2, total cholesterol/HDL, lipoprotein (a), anti-phospholipid antibodies and C reactive protein. In the distinction between classes C.C.S. < or = 2 and AMI, the levels of triglycerides, HDL cholesterol, HDL 2, total cholesterol/HDL, lipoprotein (a) and anti-phospholipid antibodies were significant. In the division between single vessel versus multivessel coronary artery disease we found significant values of HDL cholesterol, HDL 2, total cholesterol/HDL, apoprotein AI, lipoprotein (a), anti-phospholipid antibodies and C reactive protein. In conclusion, our present study endorses the clinical role of lipids and plasma lipoproteins in the determination of several cardiovascular risk factors, but introduction of new parameters such as lipoprotein (a) and the anti-phospholipid antibodies can be very useful for a better and global understanding of the pathophysiological processes and distinction of higher risk subgroups for extension and degree of severity of ischemic coronary artery disease.
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