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Effects of inflammation on plasma composition and endothelial structure and function
1Department of Medicine, Division of Nephrology, University of California Davis, Davis, USA. gakaysen@ucdavis.edu <gakaysen@ucdavis.edu>
Summary
Inflammation activates proteins typically reduced in malnutrition, indicating an inflammatory response. This process links low albumin, prealbumin, and transferrin levels to increased cardiovascular risk.
Area of Science:
- Biochemistry
- Immunology
- Cardiovascular Science
Background:
- Plasma protein levels (albumin, transferrin, prealbumin) typically decrease with malnutrition.
- Inflammation, not just starvation, can cause these protein level reductions.
- Inflammation impacts lipoprotein metabolism, antioxidant capacity, and vascular health.
Purpose of the Study:
- To explain the link between inflammation and apparent malnutrition markers.
- To elucidate how inflammation contributes to cardiovascular risk through altered protein and lipoprotein profiles.
Main Methods:
- Analysis of plasma protein composition in relation to inflammatory markers.
- Investigation of lipoprotein alterations and oxidative stress during inflammation.
- Assessment of endothelial function and adhesion molecule expression.
Main Results:
- Reduced albumin, transferrin, and prealbumin levels indicate activated inflammation.
- Inflammation alters low-density lipoprotein (LDL) and high-density lipoprotein (HDL) function.
- Increased C-reactive protein (CRP) and fibrinogen are associated with vascular disease risk.
- Myeloperoxidase activity in inflammation decreases nitric oxide (NO) bioavailability.
Conclusions:
- The study links inflammation-induced changes in plasma proteins to cardiovascular risk.
- Apparent malnutrition markers in the presence of inflammation signal heightened vascular disease risk.
- Understanding these mechanisms is crucial for managing cardiovascular health in inflammatory conditions.