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Physiology and Pharmacology، جلد ۲۴، شماره ۳، صفحات ۱۸۵-۱۹۶
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عنوان انگلیسی Effects of different dark chocolate diets on memory functions and brain corticosterone levels in rats under chronic stress
چکیده انگلیسی مقاله Introduction: Stress influences cognitive behavior adversely, whereas dark chocolate exhibits positive effects on memory processes. This study investigated the effects of different dark chocolate diets on various aspects of brain functions in rats under chronic stress Methods: Thirty-five rats were randomly allocated into five groups: control, stress, stress with different (compulsory, optional and restricted) dark chocolate diets. Latency, dark stay (DS) time and the number of entrance to the dark compartment were respectively evaluated as memory, memory consolidation and locomotor activity by passive avoidance test. Results: There were significant differences between initial latency and latency after 1 day in all groups. In the stress-compulsory and restricted dark chocolate diet groups, latency after 1 day increased significantly. Moreover, the DS time was not significantly higher in the stressed group than the control group. The DS time and number of entrance to dark compartment decreased significantly in the stress-compulsory dark chocolate diet group compared to the stressed group. Furthermore, the number of entrance to dark compartment was significantly higher for the stress- optional dark chocolate diet compared to those with the compulsory diet. Additionally, serum and hippocampal corticosterone levels, except in the frontal cortex, were significantly lower only in the stress-compulsory dark chocolate diet group compared to the stressed group. Conclusion: Different dark chocolate diets had various effects on brain functions under chronic stress. Respectively, the compulsory and optional dark chocolate diets had the best and least effects on brain function improvement. Only the compulsory dark chocolate diet could improve brain functions such as memory, memory consolidation and locomotor activity.
کلیدواژه‌های انگلیسی مقاله Dark chocolate, Memory, Stress, Hippocampus, Frontal cortex.
نویسندگان مقاله | Elham Kalantarzadeh
Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran


| Maryam Radahmadi
Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran


| Parham Reisi
Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
نشانی اینترنتی http://ppj.phypha.ir/browse.php?a_code=A-10-895-6&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Learning and Memory
نوع مقاله منتشر شده Experimental research article
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