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Volume 80
Issue 4
10.3797/scipharm.1207-15
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Scientia Pharmaceutica is published by MDPI from Volume 84 Issue 3 (2016). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Austrian Pharmaceutical Society (Österreichische Pharmazeutische Gesellschaft, ÖPhG).
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Article

Decreased Hippocampal 5-HT and DA Levels Following Sub-Chronic Exposure to Noise Stress: Impairment in both Spatial and Recognition Memory in Male Rats

by
Saida HAIDER
1,*,
Fizza NAQVI
1,
Zehra BATOOL
1,
Saiqa TABASSUM
1,
Tahira PERVEEN
1,
Sadia SALEEM
1 and
Darakhshan Jabeen HALEEM
1,2
1
Neurochemistry and Biochemical Neuropharmacology Research Unit, Department of Biochemistry, University of Karachi, Karachi-75270, Pakistan
2
Neuroscience Research Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, University of Karachi, Pakistan
*
Author to whom correspondence should be addressed.
Sci. Pharm. 2012, 80(4), 1001-1012; https://doi.org/10.3797/scipharm.1207-15
Submission received: 19 July 2012 / Accepted: 7 October 2012 / Published: 7 October 2012
Versions Notes

Abstract

Mankind is exposed to a number of stressors, and among them noise is one which can cause intense stress. High levels of background noise can severely impair one’s ability to concentrate. The present study was aimed to investigate the effect of sub-chronic noise stress on cognitive behavior and hippocampal monoamine levels in male rats. The study was performed on 12 male Wistar rats, divided into two groups; the control and noise-exposed. The rats in the test group were subjected to noise stress, 4h daily for 15 days. Cognitive testing was performed by the Elevated Plus Maze test (EPM) and Novel Object Recognition test (NOR). HPLC-EC was used to determine hippocampal monoamine levels and their metabolites. The data obtained revealed a significant decrease in hippocampal serotonin (5-hydroxytryptamine; 5-HT) and dopamine (DA) levels, whereas turnover ratios of 5-HT and DA were significantly increased compared to the controls. Rats exposed to noise exhibited a significant decrement in spatial memory. A significantly decreased recognition index of rats exposed to noise as compared to the control was also observed in the NOR test. Results of the present findings suggest the role of decreased hippocampal 5-HT and DA in the impairment of cognitive function following noise exposure.
Keywords: Spatial memory; Recognition memory; Noise; Serotonin; Dopamine; Hippocampus Spatial memory; Recognition memory; Noise; Serotonin; Dopamine; Hippocampus

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MDPI and ACS Style

HAIDER, S.; NAQVI, F.; BATOOL, Z.; TABASSUM, S.; PERVEEN, T.; SALEEM, S.; HALEEM, D.J. Decreased Hippocampal 5-HT and DA Levels Following Sub-Chronic Exposure to Noise Stress: Impairment in both Spatial and Recognition Memory in Male Rats. Sci. Pharm. 2012, 80, 1001-1012. https://doi.org/10.3797/scipharm.1207-15

AMA Style

HAIDER S, NAQVI F, BATOOL Z, TABASSUM S, PERVEEN T, SALEEM S, HALEEM DJ. Decreased Hippocampal 5-HT and DA Levels Following Sub-Chronic Exposure to Noise Stress: Impairment in both Spatial and Recognition Memory in Male Rats. Scientia Pharmaceutica. 2012; 80(4):1001-1012. https://doi.org/10.3797/scipharm.1207-15

Chicago/Turabian Style

HAIDER, Saida, Fizza NAQVI, Zehra BATOOL, Saiqa TABASSUM, Tahira PERVEEN, Sadia SALEEM, and Darakhshan Jabeen HALEEM. 2012. "Decreased Hippocampal 5-HT and DA Levels Following Sub-Chronic Exposure to Noise Stress: Impairment in both Spatial and Recognition Memory in Male Rats" Scientia Pharmaceutica 80, no. 4: 1001-1012. https://doi.org/10.3797/scipharm.1207-15

APA Style

HAIDER, S., NAQVI, F., BATOOL, Z., TABASSUM, S., PERVEEN, T., SALEEM, S., & HALEEM, D. J. (2012). Decreased Hippocampal 5-HT and DA Levels Following Sub-Chronic Exposure to Noise Stress: Impairment in both Spatial and Recognition Memory in Male Rats. Scientia Pharmaceutica, 80(4), 1001-1012. https://doi.org/10.3797/scipharm.1207-15

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