Background: Diabetes remains a major public health concern affecting about 2.8% of the global population. Chronic hyperglycaemia of diabetes is frequently associated with long-term damage, dysfunction, and failure of different organs. With multiple risk factors, delayed diagnosis, life-threatening complications, failure of the current therapies, and financial costs, there is a need to look for alternative treatment.
Methods: Acute toxicity and anti-diabetic property of the methanolic extract of
P.santaliniodes were evaluated on mice and alloxan induced diabetic rats respectively. Twenty alloxan induced diabetic rats were used for both chronic and sub chronic test. For both test methods, two dose levels (250mg/kg, 500mg/kg) were chosen. Water (5ml) and glybenclamide (5mg/kg) were used for negative and positive control respectively. Data obtained were analysed using analysis of varaiance (ANOVA) and T-test. The plant material was subjected to pharmacognostic studies, and it includes physicochemical analysis, phytochemical evaluation, determination of extractive value, histo-chemical analysis and microscopic analysis of the powdered crude drug.
Results: The 250mg/kg dose and 500mg/kg dose were statistically significant at
p<0.05 at day 1,6,9,12,24 and 6, 9, 12, 24 relative to the placebo for chronic respectively. For sub chronic study, statistical significance was seen only for 500mg/kg on day 10 relative to placebo at p<0.05. Phytochemical analysis of the plant revealed alkaloids, resins, steroids,terpenoids,flavonoids, proteins, carbohydrates, reducing sugars, oils, acidic compounds,cardiac glycosides, tannins and saponins. Physicochemical analysis (total ash {4.7%}, water soluble ash {1%}, acid insoluble ash {12%}, sulphated ash 1.25%}); extractive value (ethanol extractive value {2.2%}, chloroform extractive value {10%}); histochemical analysis (lignified tissue, calcium oxalate, protein, starch, fat and oil and cellulose cell wall) and microscopic analysis of the powdered (branched multicellular non glandular trichomes, elongated unicellular non-glandular trichomes, epidermal cell of the testa,starch globules, annular xylem vessel, peristerm of raphae, large irregularly shaped calcium oxalate and layer of peristerm containing pigment).
Conclusions: Finally,
P. santaliniodes possess anti-diabetic property which may be linked to the phytoconstituent and thus could serve as lead drug.