Anti-Hyperglycemic and Anti-Hyperlipidemic Potentials of Methanol Leaf Extracts of Aframomum melegueta and Piper guineense
Adetoun Elizabeth Morakinyo *
Department of Biochemistry, Adeleke University, Ede, Nigeria.
Temitope Adenike Oyedepo
Department of Biochemistry, Adeleke University, Ede, Nigeria.
Olufolarin Babarinde
Department of Biochemistry, Adeleke University, Ede, Nigeria.
Joy Motunrayo Adelowo
Department of Basic Sciences, Adeleke University, Ede, Nigeria.
Ayodeji Emmanuel Adepoju
Department of Pre-Clinical Sciences, University of Limpopo, Sovenga 0727, South Africa.
Oluboade Oluokun Oyedapo
Deparment of Biochemistry and Molecular Biology, Obafemi Awolowo University, Ile-Ife, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Aim: The study investigated the anti-hyperglycemic and anti-hyperlipidemic potentials of methanol extracts of Piper guineense and Aframomum melegueta leaves with a view to utilizing the plants in the treatment and management of cardiovascular disorders.
Methodology: Twenty-eight healthy albino rats were randomly divided into seven equal groups: Group I received normal saline (2 ml/kg bwt); Group II received a single dose of alloxan(150 mg/kg bwt) intraperitoneally; Group III received alloxan (150 mg/kg bwt) + glibenclamide (5 mg/kg bwt);Group IV received alloxan (150 mg/kg bwt) +PG (200 mg/kg bwt); Group V received alloxan (150 mg/kg bwt) + PG (400 mg/kg bwt); Group VI received alloxan (150 mg/kg bwt) + AM 200 (mg/kg bwt); Group VII received alloxan (150 mg/kg bwt) + AM (400 mg/kg bwt). The blood glucose level was determined before and after treatment with the extracts. The lipid: (total cholesterol (TC), triglycerides (TG), high density lipoprotein (HDL) and low density lipoprotein (LDL) were estimated using the Randox diagnostic kits.
Results: The results revealed that alloxan was able to induce hyperglycemia at 150 mg/kg bwt and post-treatment with P. guineense and A. melegueta at 200 mg/kg and 400 mg/ kg bwt were able to significantly lower the blood glucose level which was quite apparent in AM treated groups. Also, the extracts at 200 mg/kg and 400 mg/kg were able to bring a significant (p < 0.05) reduction in TC, TG and LDL concentrations when compared to the alloxan treated group with the highest reduction in AM treated groups.
Conclusion: These results revealed that the methanol extract of P. guineense and A. melegueta elicited anti-hyperglycemic and anti-hyperlipidemic potentials of the extracts with the highest effect observed in A. melegueta treated rats.
Keywords: Anti-hyperglycemic, anti-hyperlipidemic, Piper guineense and Aframomum melegueta