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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ronan, R. Kay, L. L. Brewer, H. B. Schaefer, E. J. |
| Abstract | Tangier disease is a familial disorder characterized by orange tonsils, cholesterol ester deposition in reticuloendothelial cells, abnormal chylomicron remnants, and a marked reduction in high density lipoproteins. Plasma concentrations of the apolipoproteins apo-A-I and apoA-II in patients with Tangier disease are approximately 1% and 7% of those in normal subjects, respectively. Previous studies have shown that the low plasma concentrations of apoA-I and apoA-II are due to increased fractional catabolism with a relatively normal apoA-I and apoA-II synthesis. Plasma apoA-I and apoA-II were isolated to electrophoretic homogeneity from delipidated plasma lipoproteins from a patient with Tangier disease. ApoA-I Tangier differed from apoA-I from control subjects in amino acid composition, electrophoretic mobility, apparent molecular weight on sodium dodecyl sulfate/polyacrylamide gel electrophoresis, and heterogeneity of isoforms on isoelectric focusing. ApoA-II Tangier, however, appeared to be identical to normal apoA-II in amino acid composition and in immunological as well as chemical properties. These results have been interpreted as indicating that apoA-I Tangier has a different covalent structure than does normal apoA-I, and apoA-II Tangier is identical to normal apoA-II. This structural change in apoA-I Tangier is associated with rapid catabolism of apoA-I Tangier-and apoA-II Tangier-containing plasma lipoproteins, and it leads to the deficiency in high density lipoproteins, abnormal chylomicron remnants, and the intracellular accumulation of cholesterol ester characteristic of Tangier disease. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 8 |
| Volume Number | 79 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1982-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Apolipoproteins Genetics Hypolipoproteinemias Blood Lipoproteins, HDL Tangier Disease Amino Acids Apolipoprotein A-I Apolipoprotein A-II Electrophoresis, Polyacrylamide Gel Immunodiffusion Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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