Related Experiment Videos
Cardiovascular risk factors: interactive effects of lipids, coagulation and fibrinolysis
Insights
Cardiovascular disease is a leading cause of death. New research highlights links between traditional risk factors, haemostatic factors like fibrinogen and PAI-1, and lipoprotein metabolism, suggesting an athero-thrombogenic syndrome.
Area of Science:
- Cardiovascular Medicine
- Lipid Metabolism
- Hemostasis
Background:
- Cardiovascular disease (CVD) is a major cause of death and disability in Western societies.
- Traditional risk factors include elevated cholesterol, hypertension, and smoking.
- Emerging research identifies derangements in hemostatic factors and lipoprotein metabolism as key contributors to CVD.
Purpose of the Study:
- To explore the relationship between traditional CVD risk factors, hemostatic components, and lipoprotein metabolism.
- To investigate the role of factors such as triglycerides, high-density lipoprotein (HDL) cholesterol, fibrinogen, and plasminogen activator inhibitor-1 (PAI-1) in CVD development.
- To understand the concept of athero-thrombogenic syndrome (ATS), a clustering of metabolic and hemostatic risk factors.
Main Methods:
- Review of existing epidemiological studies and research on cardiovascular disease risk factors.
- Analysis of correlations between serum lipid levels (triglycerides, HDL cholesterol) and hemostatic factors (fibrinogen, Factor VII, PAI-1).
- Examination of the role of lipoprotein (a) as a link between lipoprotein metabolism and fibrinolysis.
Main Results:
- Elevated serum total cholesterol, hypertension, and smoking are established CVD risk factors.
- Low high-density lipoprotein (HDL) cholesterol is a predisposing factor.
- Increased plasma concentrations of fibrinogen, Factor VII, and PAI-1 are observed in individuals with CVD.
- Serum triglycerides correlate with PAI-1 and Factor VII.
- Lipoprotein (a) connects lipoprotein metabolism and fibrinolytic function.
- A cluster of risk factors including high triglycerides, low HDL cholesterol, impaired glucose tolerance, obesity, and increased Factor VII suggests an athero-thrombogenic syndrome.
Conclusions:
- Cardiovascular disease development involves complex interactions between traditional risk factors, lipid metabolism, and hemostasis.
- The athero-thrombogenic syndrome (ATS) encompasses a cluster of metabolic and hemostatic abnormalities contributing to atherosclerosis and thrombosis.
- Further research into these interconnected factors is crucial for understanding and preventing cardiovascular disease.
Abstract:
In western societies cardiovascular disease accounts for approximately one of every three deaths, and is a major contributor to chronic debiliation. During the last years our knowledge of factors that contribute to the development and progression of this disease has increased markedly. Elevated serum total cholesterol, hypertension and cigarette smoking are "traditional", well-known risk factors. In addition, low serum levels of high density lipoprotein (HDL) cholesterol predispose to development of disease, whereas in epidemiological studies the role of increased triglycerides is more controversial. During the last years derangements in several haemostatic components in persons who develop cardiovascular disease have been observed. Such alterations include increased plasma concentrations of fibrinogen, Factor VII coagulant activity and plasminogen activator inhibitor-1 (PAI-1). Furthermore, interactions between lipoproteins and haemostatic factors are gradually being disclosed. Serum triglycerides have been shown to correlate both to PAI-1 and to Factor VII. The lipoprotein (a), first described by Berg in 1963, also appears to be a link between lipoprotein metabolism and fibrinolytic function. In addition, linkages are observed between high triglycerides, low HDL cholesterol, reduced glucose tolerance, hyperinsulinemia, obesity, low physical activity, reduced fibrinolytic capacity and increased Factor VII. This clustering of risk factors has been suggested to be a coronary risk syndrome and has been called Reavens syndrome, syndrome X and insulin-resistance syndrome. A more descriptive name, athero-thrombogenic syndrome (ATS), has recently been suggested, thereby indicating that both atherosclerosis and thrombosis contribute to its development.(ABSTRACT TRUNCATED AT 250 WORDS)