Abstract
Alzheimer’s disease is characterized by the accumulation and deposition of Aβ peptides in human brains. Aβ peptides are toxic to neurons by lots of mechanisms of which Aβ induced oxidative stress is one of the hypothesis. The present study aimed to determine the effect of Hyperbaric oxygen (HBO) on Aβ25–35 induced cognitive deficits and oxidative stress and apoptosis effects in rats. Rats were given an injection of aggregated Aβ25–35. After treatment with HBO for 20days, the learning and memory ability, hippocampus neuronal apoptosis, the activity of SOD, GSH content and the MDA level and mRNA and proteins expression of Bcl-2 and Bax were detected. Our results demonstrated that HBO could significantly improved the apoptosis hippocampus neuronal induced by Aβ25–35, involving the improvement of the learning and memory impairment, which accompanied of increasing the gene and protein expression of bcl-2 and enhancing the activity of SOD and GSH content. These findings suggest that treatment of HBO might prevent the Aβ25–35 induced learning and memory impairment by increasing the gene and protein expression of bcl-2 and enhancing the activity of SOD and GSH content to alleviate the apoptosis hippocampus neuronal. This suggests that HBO may be a potential therapeutic agent for AD.
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