Rectal administration of Panax notoginseng and Colla Corii Asini suppositories in ulcerative colitis: clinical effect and influence on immune function.

OBJECTIVE

This study was designed to evaluate the efficacy of rectal administration of different doses of Panax notoginseng and Colla Corii Asini (CCA) suppositories in the treatment of ulcerative colitis (UC) and the effect on immune function and recurrence.

METHODS

Totally 120 UC patients admitted to our hospital from February 2019 to February 2020 were enrolled and randomized into experimental group (n=60) and control group (n=60). The experimental group received rectal administration of a high dose of Panax notoginseng and CCA suppositories, while the control group received a low dose. After three months of treatment, clinical symptom scores, inflammatory factor levels, scores of rectal mucosa, immune function, recurrence rates, adverse reaction rates, and clinical efficacy were compared between the two groups.

RESULTS

After treatment, the experimental group obtained significantly lower clinical symptom scores, inflammatory factors, and scores of rectal mucosa than the control group (all P<0.001). The immune function of the observation group was significantly better than that of the control group (P<0.001). At 6, 8, and 12 months after treatment, the recurrence rates in the experimental group were all significantly lower than those in the control group (all P<0.001). The two groups showed no significant difference in the incidence of adverse reaction (P>0.05), and the experimental group obtained a higher clinical efficacy than the control group (P<0.001).

CONCLUSION

For patients with UC, the rectal administration of Panax notoginseng and CCA suppositories can exert positive effects on their inflammatory factors, immune functions, UC severity, clinical symptoms, and recovery. In addition, higher doses were associated with better effects without increased adverse events.