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Background: Chromolaena odorata (C. odorata) is a medicinal plant with hypoglycemic effect known in traditional medicine. The present study investigated the in vitro antioxidant and in vivo anti-hyperglycemic effect of the methanol root extract of C. odorata in rats. Methods: Phytochemical compositions were evaluated, using standard procedures while the antioxidant activities were examined, using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and ferric reducing power (FRAP) assays. Twenty albino rats were administered 120 mg/kg of body weight (bw) alloxan and were divided into four groups of five animals each. Groups A to D were treated with 2 ml/kg of normal saline, 300 mg/kg, 500 mg/kg bw extract and 5 mg/kg bw glibenclamide, respectively, through oral route for 14 days. Blood samples were collected and prepared for the analysis of serum lipids profile. Results: The extract contained tannins (54.76±4.08 mg/100 g), saponins (322.78±17.35 mg/100 g), glycosides, alkaloids (74.34±6.08 mg/100 g), flavonoids (79.63±4.55 mg/100 g), phenols (154.32±11.21 mg/100 g), glycosides, steroids and reducing sugar. The extract promoted the inhibition of DPPH radicals with IC50 values of 191.68±1.68 µg/mL. In comparison with the untreated controls, total cholesterol, Low Density Lipoprotein (LDL)-cholesterol and triglycerides were significantly reduced (P<0.05) following treatment with C. odorata extract while high density lipoprotein (HDL)-cholesterol, was significantly increased. Conclusion: The C. odorata extract exhibited antioxidant and hypolipidemic effects in alloxan-induced diabetic rat, thus could be considered as a natural product in the management of dyslipidemia secondary to diabetes.
Omonije et al. (2020) studied this question.
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