| Autor: |
A J, Fischman, R H, Rubin, J A, White, E, Locke, R A, Wilkinson, M, Nedelman, R J, Callahan, B A, Khaw, H W, Strauss |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 31(7) |
| ISSN: |
0161-5505 |
| Popis: |
Intact IgG, Fc, Fab, and 1/2Fc (reduced and alkylated Fc) were coupled to DTPA, labeled with indium-111 and administered to rats to compare the ability of fragments of IgG to localize at focal sites of inflammation. Two sets of experiments were performed: First, 1, 6, 24, and 48 hr after injection, biodistribution was determined in healthy animals; second, localization at sites of inflammation was determined by scintillation camera imaging of animals with deep-thigh infection due to Escherichia coli. The biodistribution studies demonstrated differences in kidney and liver localization: IgG less than Fc less than Fab less than 1/2Fc (kidney), Fc less than 1/2Fc less than IgG less than Fab (liver). The imaging studies revealed that target-to-background ratio (T/B) and percent residual activity (%RA) for IgG was significantly greater (p less than 0.01) than 1/2 Fc or Fab, and T/B for IgG was greater (p less than 0.01) than Fc. These studies suggest that the Fc portion of IgG is the fragment with the best imaging properties. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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