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Iranian Journal of Basic Medical Sciences، جلد ۲۰، شماره ۸، صفحات ۹۵۱-۹۵۷
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عنوان انگلیسی Role of basal stress hormones and amygdala dimensions in stress coping strategies of male rhesus monkeys in response to a hazard-reward conflict
چکیده انگلیسی مقاله Objective(s): In the present study the effect of stress on monkeys that had learned to retrieve food from a five-chamber receptacle, as well as the relationship between their behavior and the serum cortisol and epinephrine levels and relative size of the amygdala was evaluated. Materials and Methods: Six male rhesus monkeys were individually given access to the food reward orderly. They could easily retrieve the rewards from all chambers except for the chamber 4, which a brief, mild electric shock (3 V) was delivered to them upon touching the chamber's interior. The coping behaviors were video-recorded and analyzed offline. Baseline serum cortisol and epinephrine levels were measured before the experiments using monkey enzyme-linked immunosorbent assay kit. One week after the behavioral experiment, the monkeys' brains were scanned using magnetic resonance imaging under general anesthesia. The cross-sectional area of the left amygdala in sagittal plane relative to the area of the whole brain in the same slice was evaluated by the planimetric method using ImageJ software. Results: Exposure to the distressing condition caused different behavioral responses. Monkeys with higher baseline levels of serum cortisol and epinephrine and larger amygdala behaved more violently in the face of stress, indicating adopting emotion-focused stress-coping strategies. Conversely, those with low plasma epinephrine, moderate cortisol, and smaller amygdala showed perseverative behavior, indicating a problem-focused coping style. Conclusion: In dealing with the same stress, different responses might be observed from nonhuman primates according to their cortisol and epinephrine levels as well as their amygdala dimensions.
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نویسندگان مقاله الهه تکیه | elaheh tekieh
neuroscience research center, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

اسماعیل ریاحی | esmail riahi
department of physiology, tehran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

معصومه کاظمی | masoomeh kazemi
neuroscience research center, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

هدایت صحرایی | hedayat sahraei
neuroscience research center, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

حسن توکلی | hassan tavakoli
neuroscience research center, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

حامد علیاری | hamed aliyary
department of electrical, biomedical and mechatronics engineering, qazvin branch, islamic azad university, qazvin, iran

سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

مصطفی حاجی نصراله | mostafa hajinasrollah
animal core facility, reproductive biomedicine research center, royan institute for biotechnology, acecr, tehran, iran

سازمان اصلی تایید شده: پژوهشگاه رویان (Royan institute)

مریم صالحی | maryam salehi
neuroscience research center, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

غلامحسین مفتاحی | gholamhossein meftahi
neuroscience research center, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

مهدی صابری | mehdi saberi
department of pharmacology amp; toxicology, faculty of pharmacy, baqiyatallah university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بقیه الله (Baqiyatallah university of medical sciences)

نشانی اینترنتی http://ijbms.mums.ac.ir/article_9120.html
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