Brain Training Improves Cigarette Smoke Induced Dementia in Female C57 Black 6 Mice

Abstract

Alzheimer’s disease is a chronic neurodegenerative disease among the elderly population. Various genetic, environmental and lifestyle factors have been associated with the etiology of Alzheimer’s disease. Cigarette smoke has been reported to be a major predisposing factor for Alzheimer’s disease and contributes to disease development. Conversely, studies have reported beneficial effects of brain training on the disease condition. The purpose of this study was to evaluate the effect of a brain training task in cigarette smoke induced dementia. Three groups of female C57 black 6 mice were used in the study with two of the groups subjected to cigarette smoke exposure. The third group was subjected to a novel object test immediately after the exposure. Brain training improved the cognitive domains of the smoke exposed mice. Brain training could also regain the neurotransmitter imbalances induced by cigarette smoke, importantly, decreased the glutamate levels in the hippocampus. Brain training also significantly decreased the hippocampal amyloid precursor protein expression levels by reducing the reactive oxygen species production. Additionally, the improved hippocampal neuronal count, post training supported the findings. The results indicated that brain training significantly decreased the deleterious effects of cigarette smoke in hippocampus tissue and improved dementia symptoms.