[Changes in T-lymphocyte subsets in patients with orthopedic trauma and effects of yipanzhu decoction on the impaired immune function].

The effects of yipanzhu decoction (YD) on immune function in 40 patients [2 groups, YD and normal saline (NS) group] with orthopedic trauma by taking T lymphocyte subsets as indexes were observed. The peripheral venous blood samples randomly taken from 30 healthy subjects served as control. The blood were collected within 24 hours after trauma. Then the YD and NS were respectively given to the patients in the 2 groups for 3 days, and the blood were taken 4th, 7th, 14th day after trauma for the observation of T subsets. The results revealed that before administration of YD the percentage of pan-T cells was reduced with an increased percentage of Ts cells and a decreased ratio between Th and Ts cells; 3 days after giving the drugs in YD group the percentage of pan-T cells was slightly increased, and the changed percentage of Ts cells and the ratio of Th/Ts cells mentioned above was recovered to normal, while in NS group all these indexes remained at abnormal range during the period we observed. The results suggested that YD could promote the recovery of abnormal T lymphocyte subsets in traumatized patients, and it possessed to some extent the function of immune regulation that was helpful to reduce the ratio of infection after trauma.