Further pharmacological activity of Oleuropein includes diverse healing properties due to its vasodilatory [1], anti-platelet aggregation [2], hypotensive [3, 4], anti-rheumatic [1], diuretic [3] and antipyretic [5] effects. Prevention of free radical formation by Oleuropein occurs through its ability to chelate metal ions, such as Cu and Fe, which catalyze free radical generation reactions [6], and through its inhibitory effect on several inflammatory enzymes like lipoxygenases [2]. Previously, Oleuropein was reported to have an anti-hyperglycemic effect in diabetic rats [7]. Oleuropein inhibits hyperglycemia and oxidative stress induced by diabetes, which suggests that administration of Oleuropein is helpful in the prevention of diabetic complications associated with oxidative stress [8].
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[1] Visioli F, Bellosta S, Galli C.
Oleuropein, the bitter principles of olives, enhances nitric oxide production by mouse macrophages.
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[2] De la Puerta R, Guttierrez VR, Hoult JRS.
Inhibition of leukocyte 5-lipoxygenase by phenolics from virgin olive oil.
Biochem Pharmacol. 1999; 57: 445–449.
doi:10.1016/S0006-2952(98)00320-7
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[3] Petkov V, Manolov P.
Pharmacological studies on substances of plant origin with coronary dilatating and antiarrhythmatic action.
Comp Med East West. 1978; 6: 123–130.
PMid:750171
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[4] Petroni A, Blasevich M, Salami M, Papini N, Montedoro GF, Galli C.
Inhibition of platelet aggregation and eicosanoid production by phenolic components of olive oil.
Thromb Res 1995; 78: 151–160.
doi:10.1016/0049-3848(95)00043-7
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[5] Ribeiro Rde A, de Melo, MM Fiuza, De Barros F, Gomes C, Trolin G.
Acute antihypertensive effect in conscious rats produced by some medicinal plants used in the state of Sao Paulo.
J Ethnopharmacol. 1986; 15: 261–269.
doi:10.1016/0378-8741(86)90164-9
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[6] Khayyal MT, el-Ghazaly MA, Abdallah DM, Nassar NN, Okpanyi SN, Kreuter MH.
Blood pressure lowering effect of an olive leaf extract (Olea europaea) in L-NAME induced hypertension in rats.
Arzneimittelforschung. 2002; 52: 797–802.
PMid:12489249
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[7] Visioli F, Bellomo G, Montedoro GF, Galli C.
Low-density lipoprotein oxidation is inhibited in vitro by olive oil constituents.
Atherosclerosis. 1995; 117: 25–32.
doi:10.1016/0021-9150(95)05546-9
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[8] Andrikopoulos NK, Kaliora AC, Assimopoulou AN, Papageorgiou VP.
Inhibitory activity of minor polyphenolic and nonpolyphenolic constituents of olive oil against in vitro low-density lipoprotein oxidation.
J Med Food. 2002; 5: 1–7.
doi:10.1089/109662002753723160