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Pelargonidin improves passive avoidance task performance in a rat amyloid beta25-35 model of Alzheimer�s disease via estrogen receptor independent pathways
Authors
T. Baluchnejadmojarad
F. Nikbakht
M. Roghani
H. Sohanaki
Publication date
1 January 2016
Publisher
Abstract
Alzheimer�s disease (AD) is a disorder with multiple pathophysiological causes, destructive outcomes, and no available definitive cure. Pelargonidin (Pel), an anthocyanin derivative, is an estrogen receptor agonist with little estrogen side effects. This study was designed to assess Pel memory enhancing effects on the a rat Amyloid Beta25-35 (Aβ) intrahippocampal microinjections model of AD in the passive avoidance task performance paradigm and further evaluate the potential estrogen receptor role on the memory- evoking compound. Equally divided rats were assigned to 5 groups of sham, Aβ intrahippocampal microinjected, Pel pretreated (10 mg/kg; P.O), α estrogen antagonist intra-cerebrovascular (i.c.v.) microinjected, and β estrogen antagonist (i.c.v) microinjected animals. Intrahippocampal microinjections of Aβ were adopted to provoke AD model. Passive avoidance task test was also used to assess memory performance. Pel pretreatment prior to Aβ microinjections significantly improved step-through latency (P<0.001) in passive avoidance test. In α and β estrogen, antagonists received animals, passive avoidance task performance was not statistically changed (P=0.11 & P=0.41 respectively) compared to Pel pretreated and sham animals. Our results depicted that Pel improves Aβ induced memory dysfunction in passive avoidance test performance through estrogen receptor independently related pathways. © 2016 Tehran University of Medical Sciences. All rights reserved
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Last time updated on 10/10/2019