چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| The current study is based on the “Approach–withdrawal” theory of emotional regulation and lateralization of brain function in rodents, which has little been studied. The aim was to indentify asymmetry in hemispheric genes expression during depression. Depressive-like symptoms were induced in rats using Chronic Mild Stress protocol. The sucrose consumption test was performed to identify the anhedonic and stress-resilient rats. After decapitation, RNA was extracted from frontotemporal cortex of both hemispheres of anhedonic and stress-resilient rats. The pattern of gene expression in these samples was compared to controls by real-time PCR. A linear mixed model ANOVA was fitted to the data to estimate the effect of rat line. From the total of 30 rats in the experimental group, 5 rats were identified to be anhedonic and 5 were stress-resilient according to the result of sucrose-consumption test. BDNF and NTRK-3 were expressed at significantly lower levels in the right hemisphere of anhedonic rats compared to stress-resilient rats. No significant difference was found between left hemispheres. Hemispheric asymmetry in the level of gene expression was only observed for the BDNF gene in stress-resilient rats, upregulated in right hemisphere compared to the left. Expression of NTRK3, HTR2A, COMT and SERT was not lateralized. There was no significant asymmetry between hemispheres of anhedonic rats. This study supports the evidence for the role of genes responsible for neural plasticity in pathophysiology of depression, emphasizing probable hemispheric asymmetry at level of gene expression. |
| نویسنده | نفر چندم مقاله |
|---|---|
| علیرضا فرنام | هفتم |
| سارا فرهنگ | اول |
| ژاله برار | دوم |
| علی فخاری دهخوارقانی | سوم |
| مهران مسگری عباسی | چهارم |
| یداله امیدی | ششم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| farhang2014.pdf | 1397/08/05 | 899695 | دانلود |
| rib~54586~1433907370~Image_00001.jpg | 1394/3/20 | 435439 | دانلود |
| rib~54586~1433907370~Image_00002.jpg | 1394/3/20 | 668022 | دانلود |
| rib~54586~1433907370~Image_00003.jpg | 1394/3/20 | 590665 | دانلود |
| rib~54586~1433907370~Image_00004.jpg | 1394/3/20 | 482046 | دانلود |
| rib~54586~1433907370~Image_00005.jpg | 1394/3/20 | 572742 | دانلود |
| rib~54586~1439962145~Image_00003.jpg | 1394/5/28 | 472287 | دانلود |
