Lakhder, Ibrahem Omran and BSuromo, Lisyani and RAKisdjamiatun, RAKisdjamiatun (2014) THE EFFECT OF EXTRA VIRGIN OLIVE OIL ON LOX-1ANDCOX-2 IN HIGH FAT DIET RATS. Masters thesis, Universitas Diponegoro.

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Abstract

Background: High fat diet is a diet containing large amounts of fat consistently, the increase dietary fat and cholesterol which have a key role in growing health problems. Extra virgin olive oil associated with prevention of LDL oxidation, beneficial changes in lipid ratios and low risk for CHD.
Objective: to determine the anti-inflammatory effect of extra virgin olive oil extract to levels of COX-2 and LOX-1 in the blood in rats induced by high fat diet

Methods: This research is an experimental study that used randomized posttest only control group design. 30 Wistar rats which were divided into five groups: group of control (-) which received normal diet and group of control (+) which received high fat diet without EVOO treatment and three high fat diet groups treated by EVOO 1 mL/kg/day, 2 mL/kg/day and 3 mL/kg/day orally for 2 months. The blood was collected from eyes rats and serum separation by centrifuge. COX-2, LOX-1 concentration was measured by the enzyme linked immunosorbent assay (ELISA).

Results: The result of this study showed higher COX-2 concentrations in groups treated with EVOO than control group. COX-2 serum levels of negative control where significantly lower than those of rats treated with 2 ml/kg/day (p = 0.047) and 3 ml/kg/day EVOO (p = 0.014). The COX-2 serum levels of group received 1 ml/kg/day were significantly lower than those of rats received 3 ml/kg/day EVOO (p = 0.027). And showed not significantly deferent among all groups (p = 0.570).

CONCLUSIONS: The conclusion of this study has showed that extra virgin olive oil extract not have anti inflammatory and antioxidant effect in rats.

Keywords: EVOO, HFD, LOX-1, COX-2.

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