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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Addis, J. Bridgers, W. F. Mcclain, L. D. Acton, R. T. Carl, G. F. |
| Abstract | Conventional fractionation procedures were used in an effort to define the subcellular distribution of the Thy-1 alloantigen in whole mouse brain. After discontinuous sucrose density gradient centrifugation of isotonic postnuclear particulate fractions, the bulk of Thy-1 was recovered in regions of the gradients containing synaptosomes. The synaptosome fraction that banded at 1.2 M sucrose yielded a specific activity for Thy-1 significantly greater than the synaptosomes separating at 1.4 M sucrose. Osmotic lysis of both synaptosome fractions resulted in further enrichment in Thy-1 activity, with no concomitant decrease in yields. The synaptosomal membranes obtained in this way were subsequently treated with Triton X-100 and subjected to further density gradient centrifugation. Although the detergent treatment resulted in some loss of antigenic activity, the gradient fractions that contained Thy-1 also were found by electron microscopy to be richest in synaptic junctional complexes. These findings suggest that Thy-1 is associated with synaptosomes and synaptic junctional complexes and therefore may be involved in the formation and/or maintenance of synaptic connections. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 7 |
| Volume Number | 75 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1978-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Brain Immunology Isoantigens Synaptic Membranes Synaptosomes Animals Ultrastructure Mice Mice, Inbred Strains Polyethylene Glycols Subcellular Fractions Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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