Grasas y Aceites, Vol 69, No 1 (2018)

In vivo correlation of olive leaves extract on some oxidative stress markers in streptozotocin-induced diabetes mellitus in rats


https://doi.org/10.3989/gya.1104172

A. M.R. Afify
Biochemistry Dept, Faculty of Agriculture, Cairo University, Egypt
orcid http://orcid.org/0000-0001-8096-7649

H. S. El-Beltagi
Biochemistry Dept, Faculty of Agriculture, Cairo University, Egypt
orcid http://orcid.org/0000-0003-4433-2034

S. A. Fayed
Biochemistry Dept, Faculty of Agriculture, Cairo University, Egypt
orcid http://orcid.org/0000-0002-3449-6679

A. E. El-Ansary
Biochemistry Dept, Faculty of Agriculture, Cairo University, Egypt
orcid http://orcid.org/0000-0003-0585-1229

Abstract


Diabetes mellitus type two (T2DM) is one of the most extensive diseases in the world. Herbal therapy remains a possible adjunct therapy to sustain better glycemic control and reduce complications arising from diabetes. In order to evaluate the curative impacts of olive leaf extract (OLE) on streptozotocin (STZ)-induced diabetic rats, twenty-four Wistar male adult rats were divided into four equal groups; control, diabetic control (45 mg/kg STZ), normal rats treated with OLE (17.8 mg/kg b.wt.), and diabetic rats treated with OLE (45 mg/kg STZ + 17.8 mg/kg b.wt.). The OLE extract was investigated for in vitro antioxidant activity using the DPPH assay. The phenolic, tannin, and flavonoid contents were determined. The activity of GPX, SOD, and GSH in RBC lysate, CAT in plasma and MDA in serum were measured. The OLE prevented the decrease in GSH and kept MDA around the normal range in the treated diabetic rats. The current study suggests that OLE might be used safely to ameliorate T2DM and its accompanying oxidative stress.

Keywords


Antioxidant enzymes activity; Diabetes mellitus type two; Flavonoids; Olive leaves extract; Oxidative stress; Phenolics

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