Haematological parameters of leukaemic rats supplemented with Morinda citrifolia

Morinda citrifolia (mengkudu) had been reported to have anti-tumor activity, which has been researched widely in several animal models. Sixty four eight-week-old male Sprague Dawley rats were divided into four groups of 16 rats per group namely control, MNU, Morinda citrifolia (MC), and MC+MNU group. The MNU and MC+MNU groups received four consecutive intraperitoneal (i.p) injections of N-methyl-N-nitrosourea (MNU) at a dose of 60 mg/kg for induction of leukaemia. Rats in the MC and MC+MNU groups were fed daily with a ration mixed with M. citrifolia at a dose of 5000 mg/kg body weight. The peripheral blood samples were collected at 20 weeks post MNU administration into EDTA tubes and analysed for a complete blood count. Blood smears stained with Wright’s stain were prepared for a manual differential leukocyte count and examination of the leukaemic cells. The results were analysed using a one-way ANOVA. Results in this study showed that MNU group had significant lymphocytosis (66.9±98.14) compared to the other groups. The morphology of the lymphocytes in the MNU and MC+MNU groups showed a typical morphology of leukaemic cell, while the other groups had normal lymphocyte morphology. Rats in the MNU group also had anaemia with significant reduction in total erythrocyte number (6.11±2.73 x 1012/L), haemoglobin concentration (131.64±21.32 g/L) and packed cell volume (37.92±8.50 L/L). The erythron parameters of MC+MNU group were comparable to the control and MC groups. In conclusion, daily supplementation of M. citrifolia reduced the proliferation of circulating leukaemic cells.

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