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| Content Provider | PubMed Central |
|---|---|
| Author | Imagawa, D. K. Osifchin, N. E. Paznekas, W. A. Shin, M. L. Mayer, M. M. |
| Abstract | Treatment of [3H]arachidonic acid [( 3H]C20:4)-labeled and antibody-sensitized Ehrlich ascites tumor cells with guinea pig or rabbit serum complement (C) released up to about 20 or 25% of the incorporated [3H]C20:4 into the aqueous phase as a consequence of C-induced hydrolysis of cellular phospholipid. The dose-response curve of release of [3H]C20:4 from Ehrlich ascites tumor cells, with respect to C, was approximately in the same range as the cytolytic response. In the case of [3H]C20:4-labeled and antibody-sensitized peritoneal mouse macrophages, treatment with C induced release of about 11% of the incorporated 3H as C20:4 and about 6% as prostaglandins, thromboxane B2, and hydroxyicosatetraenoic acids. C6- and C8-deficient rabbit and human sera, respectively, induced release of small amounts of [3H]C20:4 from Ehrlich ascites tumor cells and macrophages; these deficient sera also released traces of oxygenated derivatives from macrophages. Addition of purified C6 or C8 effectively restored release from both cell types, indicating that the terminal C proteins, up to and including C8, are required for the major part of the release. Our results do not rule out a possible requirement for C9. |
| Starting Page | 6647 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 21 |
| Volume Number | 80 |
| Language | English |
| Publisher Date | 1983-11-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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