Email this article 
Post a Comment Orexin A content in brain structures correlates with behavioral patterns in stressed rats
- Authors: Khokhlov P.P.1, Tissen I.Y.1, Lebedev A.A.1, Bychkov E.R.1, Shabanov P.D.1
-
Affiliations:
- Institute of Experimental Medicine
- Issue: Vol 16, No 4 (2018)
- Pages: 45-48
- Section: Articles
- URL: https://journals.rcsi.science/RCF/article/view/11087
- DOI: https://doi.org/10.17816/RCF16445-48
- ID: 11087
Cite item
Full Text
Abstract
The aim of this investigation was to reveal correlations between some behavioral patterns and orexin concentrations in the brain structures in rats after an acute psychoemotional stress. A group of rats was placed into a chamber with a tiger python for 25 mi nutes and then as a treatment these rats received orexin A or its antagonist SB-408124 administered intranasally for 7 days. Then the quantitive indexes of behavioral patterns in open field and elevated plus maze were registered. The orexin A level was investigated in the brain structures (amygdala, hippocampus, hypothalamus) of such rats by means of high-sensitive ELISA. The correlations were assessed with Spearman’s rank correlation test. As a result, a correlation between orexin A content in the amygdala and hypothalamus and a number of ambulations (line crossings) characterizing motor activity in open field test has been revealed. Therefore, the level of orexin A in the amygdala and hypothalamus demonstrates a direct and reverse link with locomotor activity of rats respectively. Also a correlation between orexin A level in the hippocampus and amygdala and the time of staying in the dark alleys of the elevated plus maze has been revealed. So, the content of orexin A in the hippocampus and amygdala reflects anxiety level of a rat. It is concluded there is a positive correlation between the orexin A content in the limbic structures of the brain and emotional behavior of rats.
Full Text
##article.viewOnOriginalSite##About the authors
Platon P. Khokhlov
Institute of Experimental Medicine
Author for correspondence.
Email: platonkh@list.ru
PhD, Senior Researcher, S.V. Anichkov Department of Neuropharmacology
Russian Federation, Saint PetersburgIlia Yu. Tissen
Institute of Experimental Medicine
Email: iljatis@mail.ru
PhD, Researcher, S.V. Anichkov Department of Neuropharmacology
Russian Federation, Saint PetersburgAndrei A. Lebedev
Institute of Experimental Medicine
Email: aalebedev-iem@rambler.ru
Dr. Biol. Sci. (Pharmacology), Leading Researcher, S.V. Anichkov Department of Neuropharmacology
Russian Federation, Saint PetersburgEugenii R. Bychkov
Institute of Experimental Medicine
Email: bychkov@mail.ru
PhD (Biochemistry), Head of the Laboratory, S.V. Anichkov Department of Neuropharmacology
Russian Federation, Saint PetersburgPetr D. Shabanov
Institute of Experimental Medicine
Email: pdshabanov@mail.ru
Dr. Med. Sci., Professor, Head, S.V. Anichkov Department of Neuropharmacology
Russian Federation, Saint PetersburgReferences
- Лебедев А.А., Шумилов Е.Г., Смирнов А.А., и др. Участие нейропептида орексина А в механизмах подкрепления, активируемых психостимуляторами // Наркология. - 2015. - Т. 14. - № 2. - С. 12-18. [Lebedev AA, Shumilov EG, Smirnov AA, et al. Uchastie neyropeptida oreksina A v mekhanizmakh podkrepleniya, aktiviruemykh psikhostimulyatorami. Narkologiia. 2015;14(2):12-18. (In Russ.)]
- Тиссен И.Ю., Виноградов П.М., Хохлов П.П., и др. Роль орексиновой системы в механизмах условного предпочтения // Обзоры по клинической фармакологии и лекарственной терапии. - 2015. - Т. 13. - № S1. - С. 166-167. [Tissen IY, Vinogradov PM, Khokhlov PP, et al. Rol’ oreksinovoy sistemy v mekhanizmakh uslovnogo predpochteniya. Reviews on Clinical Pharmacology and Drug Therapy. 2015;13(S1):166-167. (In Russ.)]
- Шабанов, П.Д., Лебедев А.А., Морозов В.И., Роик Р.О. Подкрепляющие свойства психоактивных веществ модулируются системой пептидов орексина головного мозга // Наркология. - 2016. - Т. 15. - № 4. - С. 27-33. [Shabanov PD, Lebedev AA, Morozov VI, Roik RO. Podkreplyayushchie svoystva psikhoaktivnykh veshchestv moduliruyutsya sistemoy peptidov oreksina golovnogo mozga. Narkologiia. 2016;15(4):27-33. (In Russ.)]
- de Lecea L. Hypocretins and the neurobiology of sleep-wake mechanisms. Prog Brain Res. 2012;198:15-24. doi: 10.1016/B978-0-444-59489-1.00003-3.
- Li J, Hu Z, de Lecea L. The hypocretins/orexins: integrators of multiple physiological functions. Br J Pharmacol. 2014;171(2):332-350. doi: 10.1111/bph.12415.
