Smoking, abnormal haemorheology and the pathogenesis of coronary heart disease

Area of Science:

• Cardiology
• Haemorheology
• Vascular Biology

Background:

• Current understanding identifies hypertension, hypercholesterolemia, and smoking as primary coronary heart disease (CHD) risk factors.
• Large-scale intervention trials have yielded inconclusive results regarding the impact of these major risk factors.
• Abnormal blood flow (haemorheology), particularly reduced red blood cell (RBC) filterability exacerbated by smoking, is a significant but underrecognized factor in CHD.

Purpose of the Study:

• To propose abnormal haemorheology as a direct or contributing cause of coronary heart disease (CHD).
• To investigate the association between increased blood viscosity, poor RBC deformability, and the presence of coronary artery lesions.
• To suggest novel therapeutic targets for CHD focused on improving blood rheology.

Main Methods:

• Review of existing literature on CHD risk factors and haemorheological parameters.
• Analysis of the relationship between blood viscosity, RBC deformability, and coronary artery disease severity.
• Clinical observation and theoretical modeling of haemorheological effects on coronary circulation.

Main Results:

• Inconclusive results from major risk factor intervention trials suggest other factors are involved in CHD.
• Abnormal haemorheology, characterized by increased blood viscosity and decreased RBC filterability, is linked to smoking and CHD.
• CHD occurrence is higher when coronary artery lesions coexist with increased blood viscosity and poorly deformable RBCs.

Conclusions:

• Coronary heart disease (CHD) may arise directly from haemorheological abnormalities.
• Combined haemorheological issues and significant coronary artery lesions increase CHD risk.
• Therapeutic strategies should target the reduction of blood viscosity and improvement of RBC deformability to manage CHD.