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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | R. J. Deckelbaum A. R. Tall D. M. Small |
| Abstract | The properties of human plasma very low density lipoproteins (VLDL), low density lipoproteins (LDL), and their extracted lipids were compared using calorimetric, X-ray scattering, and polarizing microscopy techniques. Intact LDL, and cholesterol esters isolated from LDL and VLDL each undergo reversible changes in their physical state around body temperature. These transitions are associated with ordered liquid crystalline to liquid phase changes of the cholesterol esters. In contrast to LDL, VLDL has no reversible transitions and shows no evidence of ordered liquid crystalline structures between 10 and 45 ° C. Therefore, unlike LDL, VLDL does not contain a separate cholesterol ester region capable of undergoing cooperative melting. Solubility studies at 37 ° C of cholesterol esters and triglyceride isolated from VLDL show that even at a weight ratio of 1:1, which greatly exceeds the relative amount of cholesterol esters in VLDL, cholesterol ester is completely soluble in triglyceride. Thus, the cholesterol ester in VLDL is not sequestered in a separate domain within VLDL, but is dissolved in the liquid core of the particle. |
| ISSN | 00222275 |
| e-ISSN | 15397262 |
| DOI | 10.1016/S0022-2275(20)41695-5 |
| Journal | Journal of Lipid Research |
| Issue Number | 2 |
| Volume Number | 18 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 1977-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Biochemistry Low Density Lipoprotein Lipoprotein Structure Lipid Phase Behavior Scanning Calorimetry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Endocrinology |
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