Re-evaluating the effi cacy of the aqueous leaf extract of Bridelia ferrugenia and its potential combination with metformin in the management of diabetes mellitus
2015
Kwesi Prah Thomford Dominic Adotei Edoh, Joseph A. Sarkodie, Ama Kyeraa Thomford, Kennedy Essuman, Derrick Owu
Herbal medicinal products play a significant role in the management of diabetes and other chronic diseaseseither as a monotherapy or in combination with allopathic treatments. The hypoglycemic activity of a Ghanaianherbal antidiabetic product (Bridelia Tea) prepared from the dried leaves of Bridelia ferrugenia [BRD] was reevaluatedin this study with the view of improving, its activity and explore the possible benefit of using theproduct in combination with metformin (MET). Male and female Sprague-Dawley rats (210-220 g) were renderedhyperglycemic by a single intraperitoneal administration of streptozocin (70 mg/kg) after an overnight fast. Thehyperglycemic rats then received one of the following treatments ([BRD 30 mg/kg or 300 mg/kg], [MET 250 mg/kgor 1000 mg/kg], [MET 250 mg/kg and BRD 30 mg/kg], [MET 1000 mg/kg and BRD 300 mg/kg]). The hypoglycemiceffect of BRD, MET, and the combination of the two products were not significantly different during an initial6 h of monitoring (P > 0.05). In the long-term study over 28 days, BRD 300 mg/kg had hypoglycemic effectscomparable to MET 1000 mg/kg p.o. and better than BDF 30 mg/kg p.o. (P < 0.05). However, the combination ofthe two products BRD and MET at the two doses reduced their therapeutic effect compared to animals receivingeither one of the two treatments alone.
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