Plasma viscosity and biochemical parameters in the "fatty" rat

Area of Science:

• Cardiovascular Science
• Biomedical Research
• Animal Models

Background:

• Rheological factors are implicated in thrombosis and atherosclerosis.
• Understanding these factors is crucial for cardiovascular disease research.

Purpose of the Study:

• To investigate plasmatic rheological factors in an animal model with altered plasma lipids.
• To compare these factors in homozygotic and heterozygotic "fatty" rats versus normal Sprague-Dawley rats.

Main Methods:

• Analysis of plasma lipids (cholesterol, triglycerides, lipidograms), glucose, total proteins, and fibrinogen.
• Measurement of plasmatic and whole blood viscosity.
• Utilized homozygotic and heterozygotic "fatty" rats and Sprague-Dawley rats.

Main Results:

• Homozygotic "fatty" rats exhibited hyperlipidemia with significantly increased triglycerides.
• Elevated fibrinogen, total proteins, and glucose were observed in homozygotic rats.
• Lipidogram modifications included increased beta-lipoproteins and decreased alpha-lipoproteins, correlating with higher blood and plasma viscosity.

Conclusions:

• The "fatty" rat model demonstrates significant rheological changes associated with hyperlipidemia.
• These findings support the utility of this animal model for studying atherogenesis.
• Rheological alterations are key contributors to the development of atherosclerosis.