Preliminary studies on the immunomodulatory activity of Cedrus deodara wood oil

The volatile oil of Cedrus deodara wood, administered orally at doses of 50 and 100 mg/kg, significantly inhibited neutrophil adhesion to nylon fibers, indicating inhibition of process of margination in the blood vessels. It also significantly inhibited Type III hypersensitivity reaction, i.e. Arthus reaction induced by methylated bovine serum albumin, and Type IV, i.e. delayed type hypersensitivity reaction induced by sheep erythrocytes and oxazolone, indicating an inhibitory effect on humoral and cell-mediated immune responses. (C) 1999 Elsevier Science B.V. All rights reserved.