Abstract
Myelosuppression is a serious disease that is related to the malfunction of blood cells production that leads to cytopenia which is the most serious hematologic toxicity of cancer chemotherapies including cyclophosphamide, which is a strong oxazaphosphorine [a nitrogen mustard alkylating agent] that can be used alone or combined with other chemotherapeutic agents for the treatment of different malignant diseases. It induces severe bone marrow suppression by damaging hematopoietic stem cells through the generation of oxidative stress. Fisetin is a hydrophobic polyphenolic compound with a wide range of pharmacological properties such as antioxidant, anti-inflammatory, antimicrobial, osteoprotective, antidiabetic, and anti-carcinogenic activities. The present study aims to evaluate the effects of fisetin alone and pretreatment with fisetin followed by cyclophosphamide on some selected hematological and oxidative stress parameters in the male rats’ model.Animals were randomly divided into 4 groups each with 7 rats. Thefirst groupreceived only the vehicle 1% dimethyl sulfoxide (negative control group). The second groupreceived oral fisetin. The third groupreceived a single intraperitoneal (IP) injection of cyclophosphamide (CP) and the fourth groupreceived fisetin for 7 constitutive days then a single IP injection of CPon day 7. Results showed that both fisetin and CP significantly reduced total white blood cells and platelet counts compared to such counts in negative control/Group I (P<0.05) wheneach was administered alone and in combination. Furthermore, results viewed that fisetin significantly increased GSH and SOD1, and decreasedMDA levels in serum compared to such levels in CP-injected rats (Group III) (P<0.05). The study concluded that the administration of fisetin alone causes leukopenia and thrombocytopenia andthis decrease was augmented in combination with CP; while exhibiting a strong antioxidant effectagainst CP-induced oxidativestress
