OBJECTIVE : To assess the serum levels of interleukin 1beta (IL-1beta) in elderly depressed patients in comparison with nondepressed healthy elderly subjects.
Tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) were measured by ELISA in 4.5-h , lipopolysaccharide-stimulated whole blood cultures of 347 human immunodeficiency virus type 1-infected patients and 107 healthy seronegative controls.
IFN-gamma was confirmed by ELISA to stimulate a six - to eightfold increase in macrophage secretion of IFN-alpha/beta compared with untreated control cells.
In contrast , IFN-gamma does require de novo protein synthesis for its modulatory activity.
We found that expression of V protein inhibited interferon (IFN) - alpha/beta signaling but not IFN-gamma signaling.