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[Composition and physical structure of atherogenic lipoproteins in ischemic heart disease]
Insights
Heart ischemic disease (HID) alters atherogenic lipoproteins, affecting very low-density lipoprotein (VLDL) size and charge, and low-density lipoprotein (LDL) size and charge. These changes vary depending on lipid metabolism disturbances.
Area of Science:
- Cardiovascular Science
- Lipid Metabolism
- Biochemistry
Context:
- Investigating atherogenic lipoproteins in blood plasma.
- Comparative studies in heart ischemic disease (HID).
- Examining HID with and without hypercholesterinemia.
Purpose:
- To identify differences in very low-density lipoprotein (VLDL) and low-density lipoprotein (LDL) composition and structure.
- To understand how lipid metabolism disturbances affect lipoprotein changes in HID.
- To reveal alterations in surface charge density and radii of VLDL and LDL.
Summary:
- Significant differences in VLDL and LDL composition and physical structure were observed in patients with heart ischemic disease (HID).
- VLDL showed decreased surface charge density and size, with the least expression in HID.
- LDL exhibited increased surface charge density and radii in the pathological state of HID.
Impact:
- Provides insights into the specific structural and compositional changes of atherogenic lipoproteins in heart ischemic disease.
- Highlights the role of lipid metabolism in modulating these lipoprotein alterations.
- Contributes to a deeper understanding of the pathophysiology of heart ischemic disease at the molecular level.
Abstract:
The results of comparative studies in atherogenic lipoproteins of blood plasma under heart ischemic disease (HID) which is accompanied by hypercholesterinemia or proceeds without disturbances in the lipid metabolism, evidence for considerable differences in the composition and physical structure of very low-density lipoproteins (VIDL) and low-density ones (LDP) under the investigated states. The decrease in the surface charge density and in sizes of VLDL, as compared to normal, which are least expressed at HID and an increase in the surface charge density with certain increase of LDL radii under this pathologic state are revealed.