Ethyl-acetate fraction of Trichilia catigua restores long-term retrograde memory and reduces oxidative stress and inflammation after global cerebral ischemia in rats.

Ethyl-acetate fraction of Trichilia catigua restores long-term retrograde memory and reduces oxidative stress and inflammation after global cerebral ischemia in rats.
Behav Brain Res. 2017 Sep 14;:
Authors: Godinho J, de Oliveira RMW, de Sa-Nakanishi AB, Bacarin CC, Huzita CH, Longhini R, Mello JCP, Nakamura CV, Previdelli IS, Dal Molin Ribeiro MH, Milani H
Abstract
We originally reported that an ethyl-acetate fraction (EAF) of Trichilia catigua prevented the impairment of water maze learning and hippocampal neurodegeneration after transient global cerebral (TGCI) in mice. We extended that previous study by evaluating whether T. catigua (i) prevents the loss of long-term retrograde memory assessed in the aversive radial maze (AvRM), (ii) confers hippocampal and cortical neuroprotection, and (iii) mitigates oxidative stress and neuroinflammation in rats that are subjected to the four vessel occlusion (4-VO) model of TGCI. In the first experiment, naive rats were trained in the AvRM and then subjected to TGCI. The EAF was administered orally 30min before and 1h after TGCI, and administration continued once per day for 7days post-ischemia. In the second experiment, the EAF was administered 30min before and 1h after TGCI, and protein carbonylation and myeloperoxidase (MPO) activity were assayed 24h and 5days later, respectively. Retrograde memory performance was assessed 8, 15, and 21days post-ischemia. Ischemia caused persistent retrogr...

Source: Behavioural Brain Research - September 14, 2017 Category: Neurology Authors: Godinho J, de Oliveira RMW, de Sa-Nakanishi AB, Bacarin CC, Huzita CH, Longhini R, Mello JCP, Nakamura CV, Previdelli IS, Dal Molin Ribeiro MH, Milani H Tags: Behav Brain Res Source Type: research