The effect of acute mental stress on the exchange of monoamines in the mesocortical and nigrostriatal systems of the rat brain
- 作者: Bychkov E.R.1, Karpova I.V.1, Tsikunov S.G.1, Krytskaya D.V.1, Lebedev A.A.1, Tissen I.Y.1, Pyurveev S.S.1,2, Shabanov P.D.1
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隶属关系:
- Institute of Experimental Medicine
- St. Petersburg State Pediatric Medical University
- 期: 卷 12, 编号 6 (2021)
- 页面: 35-42
- 栏目: Original studies
- URL: https://journal-vniispk.ru/pediatr/article/view/106314
- DOI: https://doi.org/10.17816/PED12635-42
- ID: 106314
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详细
Background. Мesocortical and nigrostriatal dopaminergic systems are highly sensitive to stressful events. One of the most adequate models of acute psychogenic stress in animals is the death of a partner upon presentation of a predator.
Aim. To study the content of dopamine (DA), serotonin and their metabolites: dioxyphenylacetic (DOPAC), homovanillic and 5-hydroxyindoleacetic (5-HIAA) acids in the prefrontal cortex, striatum, and ventral tegmental area in rats on days 3, 7, and 14 after the acute psychogenic stress of the death of a partner upon presentation of a predator.
Materials and methods. 28 male Wistar rats were studied. Acute single psychotraumatic situation was used. A group of rats was placed in a tiger python terrarium. One animal died as a result of its nutritional needs, the rest of the rats experienced the death of a partner. The content of monoamines in the brain structures was carried out by high performance liquid chromatography with electrochemical detection.
Results. Changes in the content of monoamines in the prefrontal cortex, striatum, and ventral tegmental area were found on the 7 and 14 days after the presentation of the predator. In the ventral tegmental area on the 7 day, there was an increase in the DOPAC/DA ratio and an increase in the serotonin metabolite 5-HIAA, which reflects an increase in the activity of dopamine and serotonin. In the prefrontal cortex on the 14 day, the DOPAС content and the DOPAС/DA index decreased. The 5-HIAA content in the prefrontal cortex and the 5-HIAA/5-HT value also significantly decreased.
Conclusions. Changes in the metabolism of monoamines after presentation of a predator develop gradually: increase of the dopamine and serotonin activity in the ventral tegmental area was noted on the 7 day after presentation of the predator, decrease in their activity in the striatum and prefrontal cortex only on the 14 day, reflecting the development of depressive states and post-traumatic stress disorder.
作者简介
Eugenii Bychkov
Institute of Experimental Medicine
编辑信件的主要联系方式.
Email: bychkov@mail.ru
MD, PhD, Head of the Laboratory of Chemistry and Pharmacology of Medicinal Compounds, Department of Neuropharmacology
俄罗斯联邦, Saint PetersburgInessa Karpova
Institute of Experimental Medicine
Email: inessa.karpova@gmail.com
PhD (Physiology), Senior Researcher, Department of Neuropharmacology
俄罗斯联邦, Saint PetersburgSergey Tsikunov
Institute of Experimental Medicine
Email: secikunov@yandex.ru
MD, PhD, Dr. Sci. (Med.), Professor, Head of the Laboratory of Psychophysiology of Emotions, I.P. Pavlov Physiological Department
俄罗斯联邦, Saint PetersburgDarya Krytskaya
Institute of Experimental Medicine
Email: darya_uladzimirawna@mail.ru
Postgraduate Student, I.P. Pavlov Physiological Department
俄罗斯联邦, Saint PetersburgAndrei Lebedev
Institute of Experimental Medicine
Email: aalebedev-iem@rambler.ru
Dr. Biol. Sci. (Pharmacology), Head of the Laboratory of General Pharmacology, Department of Neuropharmacology
俄罗斯联邦, Saint PetersburgIlya Tissen
Institute of Experimental Medicine
Email: iljatis@mail.ru
PhD (Physiology), Senior Researcher, Department of Neuropharmacology
俄罗斯联邦, Saint PetersburgSarng Pyurveev
Institute of Experimental Medicine; St. Petersburg State Pediatric Medical University
Email: dr.purveev@gmail.com
Postgraduate Student (Pharmacology), Department of Neuropharmacology, Assistant Professor, Department of Pathologic Physiology and Course Immunopathology
俄罗斯联邦, Saint Petersburg; Saint PetersburgPetr Shabanov
Institute of Experimental Medicine
Email: pdshabanov@mail.ru
MD, PhD, Dr. Sci. (Med.), Professor, Head of the Laboratory of Psychophysiology of Emotions, I.P. Pavlov Physiological Department
俄罗斯联邦, Saint Petersburg参考
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