RESUMO
Objective To observe the effect of different doses of HS6101 on the recovery of hematopoietic injury in ICR mice treated with cyclophosphamide (CTX). Methods Normal ICR mice were intraperitoneally injected with CTX at 100 mg/kg once a day for 3 consecutive days,and the mouse model of chemotherapy-induced hematopoietic injury was established. Three groups of mice (with 20 per group),were respectively injected with HS6101 at 0,9 or 27 μg subcutaneously at one hour before the first administration of CTX. The peripheral blood cell counts of the mice were observed once every 2 days. Hematopoietic progenitor cell colony counting and histopathological assessment of bone marrow cells were evaluated at 4 d and 9 d after the first administration of CTX. Results In ICR mice after chemotherapy with CTX,all doses of HS6101 significantly increased peripheral leukocytes and neutrophils (P<0.05),elevated the number of multilineage hematopoietic progenitor cell colonies of bone marrow,and stimulated the proliferation of bone marrow cells after CTX injury. Mice receiving 27 μg HS6101 were better than those of the other two groups. Conclusion HS6101 at 27 μg could significantly promote the recovery of hematopoiesis in ICR mice treated with CTX chemotherapy.