The compounds (1–5)were prepared as suspensions in distilled
water and administered orally for 14 consecutive days
using canula. The compounds were given at three doses of
0.3, 1.0 and 3.0 mg/kg respectively while the positive control
mice were treated orally with standard immunostimulant
drug Picroliv at an optimal dose of 1.0 mg/kg×14 days. Control
mice receivedwater only as vehicle under identical conditions.
At the end of treatment (i.e. on 15th day of treatment) animals
were euthanized humanely to collect splenocytes and peritoneal
macrophages to determine various immune responses
viz. macrophage function (ROS production), T and B cell proliferation,
T and B cell surface markers (CD4, CD8 and CD19) and
Th1/Th2 cytokines. Lymphoproliferative index was evaluated
by radioactive Thymidine uptake while remaining studies
were carried out on Flow Cytometer.