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Abstract Title:

Neuroprotective role of Ginkgo biloba against cognitive deficits associated with Bisphenol A exposure: An animal model study.

Abstract Source:

Neurochem Int. 2017 Mar 30. Epub 2017 Mar 30. PMID: 28366721

Abstract Author(s):

Manar Mohammed El Tabaa, Samia Salem Sokar, Ehab Sayed Ramdan, Inas Zakria Abd El Salam, Anis Zaid

Article Affiliation:

Manar Mohammed El Tabaa

Abstract:

Our study aimed to elucidate to what extent Ginkgo biloba (Gb) can protect rats from cognitive deficits induced by exposure to Bisphenol A (BPA) at high dose. Therefore, sixty male Wistar rats were randomly divided into four groups of 15 animals in each group: Vehicle group, Gb-control group, BPA-exposed group and Gb pre-treated group. All administrations were given daily by an oral gavage once a day for eight weeks. Cognitive function was assessed using Morris water maze; Y-maze and Novel object recognition tasks. Additionally, hippocampal levels of DA, NE and 5-HT were measured. BPA-induced oxidative stress was evaluated by determining SOD activity, NO and MDA levels in rat hippocampus as well as level of circulating adiponectin. Moreover, histopathological changes in CA3 region of rat hippocampus and immunohistochemical expression of NF-κB and Caspase-3 were investigated. We found that Gb pretreatment significantly improved cognitive performance; may be via increasing hippocampal levels of estrogen-dependent biogenic amines. At the same time, Gb could strictly control BPA-induced oxidative stress by improving SOD activity and adiponectin level with decrease in NO and MDA levels. Lastly, Gb alleviated the histopathological injuries induced by BPA and inhibited NF-κB and caspase-3 activation. In conclusion, our results suggested that Gb has potential to ameliorate BPA-induced hippocampal neuronal damage and subsequent cognitive deficits through mechanisms involving its ability to enhance the release of biogenic amines as well as its antioxidant and adiponectin pro-secretory effects.

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Sayer Ji
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