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Therapeutic activity of SK&F 105685, a novel azaspirane with suppressor-cell inducing activity
1Department of Cellular Biochemistry, SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406.
Abstract:
SK&F 105685, methotrexate (MTX) and chloroquine (CHL) were examined for their ability to inhibit paw inflammation in the adjuvant arthritic rat (AA) and for their ability to induce non-specific suppressor cells (SC) in the spleens of these animals. Compared to SK&F 105685 (84-90%) inhibition and MTX (91% inhibition) CHL, at the maximally tolerated dose, only inhibited paw lesions by 29%. MTX did not induce splenic SC activity and, despite the structural similarities between CHL and SK&F 105685, only the latter induced suppressor cells.

