title: Dietary virgin olive oil reduces blood brain barrier permeability, brain edema, and brain injury in rats subjected to ischemia-reperfusion.
abstract: Recent studies suggest that dietary virgin olive oil (VOO) reduces hypoxia-reoxygenation injury in rat brain slices. We sought to extend these observations in an in vivo study of rat cerebral ischemia-reperfusion injury. Four groups, each consisting of 18 Wistar rats, were studied. One group (control) received saline, while three treatment groups received oral VOO (0.25, 0.5, and 0.75 mL/kg/day, respectively). After 30 days, blood lipid profiles were determined, before a 60-min period of middle cerebral artery occlusion (MCAO). After 24-h reperfusion, neurological deficit scores, infarct volume, brain edema, and blood brain barrier permeability were each assessed in subgroups of six animals drawn from each main group. VOO reduced the LDL/HDL ratio in doses of 0.25, 0.5, and 0.75 mL/kg/day in comparison to the control group (p < 0.05), and offered cerebroprotection from ischemia-reperfusion. For controls vs. doses of 0.25 vs. 0.5 vs. 0.75 mL/kg/day, attenuated corrected infarct volumes were 207.82 +/- 34.29 vs. 206.41 +/- 26.23 vs. 124.21 +/- 14.73 vs. 108.46 +/- 31.63 mm3; brain water content of the infarcted hemisphere was 82 +/- 0.25 vs. 81.5 +/- 0.56 vs. 80.5 +/- 0.22 vs. 80.5 +/- 0.34%; and blood brain barrier permeability of the infarcted hemisphere was 11.31 +/- 2.67 vs. 9.21 +/- 2.28 vs. 5.83 +/- 1.6 vs. 4.43 +/- 0.93 micro-g/g tissue (p < 0.05 for measures in doses 0.5 and 0.75 mL/kg/day vs. controls). Oral administration of VOO reduces infarct volume, brain edema, blood brain barrier permeability, and improves neurologic deficit scores after transient MCAO in rats.
authors.affiliation: Faculty of Biological Sciences, Shahid Beheshti University, G.C. Tehran, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Mohagheghi
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Bigdeli
authors.forename: Bahram
authors.initials: B
authors.lastname: Rasoulian
authors.forename: Ali Asghar
authors.initials: AA
authors.lastname: Zeinanloo
authors.forename: Ali
authors.initials: A
authors.lastname: Khoshbaten
mesh_terms: D000818:Animals; D001812:Blood-Brain Barrier / Q000187:drug effects*; D001929:Brain Edema / Q000517:prevention & control*; D008297:Male; D000069463:Olive Oil; D010938:Plant Oils / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D015427:Reperfusion Injury / Q000517:prevention & control*
chemical_list: D000069463:Olive Oil; D010938:Plant Oils