Gender differences in the formation of the epileptic system in male and female rats depending on the stage of the estrous cycle on the model of focal cobalt epilepsy
https://doi.org/10.37489/2587-7836-2021-3-26-30
Abstract
In this work, the features of the formation of the epileptic system in male and female rats, depending on the stages of the estrous cycle, were studied on the model of focal cobalt epilepsy. It was found that in male rats at the stable stage of the first stage of development of the epileptic system, Epi activity (the number and duration of discharges per minute) is most pronounced in the contralateral and ipsilateral cortex, and in female rats, the leading brain structures involved in the generation of EpA depend on the phases of the estrous cycle. In the diestrus2 phase, in females, the leading structure generating EpA, as in males, is the contralateral cortex, and in the proestrus and estrus phases, which are characterized by a high content of sex hormones, in females there is a significant predominance of EpA in the lateral hypothalamus and dorsal hippocampus.
Keywords
About the Authors
T. A. VoroninaRussian Federation
Voronina Tatiana A. - Dr. Sci. (Med.), professor, Head of the Laboratory of Psychopharmacology
Moscow
S. A. Litvinova
Russian Federation
Litvinova Svetlana A. - PhD in Biology, Leading researcher Laboratory of Psychopharmacology
Moscow
Y. B. Filatova
Russian Federation
Filatova Julia B. - Laboratory Research Assistant Laboratory of psychopharmacology
Moscow
References
1. Karlov VA. Epilepsy in children and adult women and men: a guide for doctors. Moscow: Medicine; 2019. (In Russ).
2. Avakian GN, Voronina T A, Khromykh EA. Epilepsy. Pathogenesis. Pathogenetic therapy. Posobie dlya vrachey. Moscow: 2007. (In Russ).
3. ВОЗ World Healt Organization. International Classification of Functioning Disability and Healt. 2017.
4. Hauser WF. The descriptive epidemiology of epilepsy. Epilepsy: translational, clinical and social aspects. Proceeding of the conference Moscow. 2013. р. 83–117.
5. Wolf P. Nosology of the epilepsies and its reflection in classification. Comprehensive Epileptology. Proceeding of the conference Saint Petersburg. 2011. р. 181–189
6. Reader FK, Voronina TA, Nerobkova LN, Burd SG, Solomatin YuV, Kalinina TS, Volkova AV. Different efficacy of lamictal in female rats during the estrous cycle. Russian National Congress "Man and Medicine". Russia, Moscow. 2005. p. 55. (In Russ).
7. Sapronov NS, Fedotova YuO, Goncharov NP. Sex hormones and behavioral reactions. Annals of the Russian Academy of Medical Sciences. 2001;12:29–34. (In Russ).
8. Herzog AG, Coleman AE, Jacobs AR, Klein P, Friedman MN, Drislane FW, Ransil BJ, Schomer DL. Interictal EEG discharges, reproductive hormones, and menstrual disorders in epilepsy. Ann Neurol. 2003 Nov;54(5):625–637. DOI:10.1002/ana.10732.
9. Motta E. Epilepsy and hormones. Neurol Neurochir Pol. 2000;34 Suppl 1:31–33.
10. Foldvary-Schaefer N, Harden C, Herzog A, Falcone T. Hormones and seizures. Cleve Clin J Med. 2004 Feb;71 Suppl 2:S11-8. DOI:10.3949/ccjm.71.suppl_2.s11.
11. Reddy DS, Castaneda DC, O’Malley BW, et al. Anticonvulsant activity of progesterone and neurosteroids in progesterone receptor knockout mice. J Pharmacol Exp Ther. 2004;310:230–239. DOI:10.1124/jpet.104.065268.
12. Reddy DS, Rogawski MA. Neurosteroid replacement therapy for catamenial epilepsy. Neurotherapeutics. 2009 Apr;6(2):392–401. DOI:10.1016/j.nurt.2009.01.006.
13. Morrell MJ. Epilepsy in women. Am Fam Physician. 2002;66(8):1489–1494.
14. Herzog AG. Disorders of reproduction in patients with epilepsy: Primary neurological mechanisms. Seizure 2008;17(2):101–110. DOI:10.1016/j.seizure.2007.11.025.
15. Voronina TA, Nerobkova LN. Methodological recommendations for the preclinical study of anticonvulsant activity of drugs. Guidelines for conducting preclinical studies of medicines, Moscow: 2012. pp. 235–250. (In Russ).
16. Filatova YuB, Avakian GN, Voronina TA, Nerobkova LN, Klodt PM, Kudrin VS, Gaidukov IA. Changes in the levels of inhibitory and excitatory amino acids and neurophysiology characteristics in the brain structures of female rats with cobalt epileptogenic focus during different phases of the estrous cycle. Epilepsy and paroxysmal states. 2012;4(1):29–33. (In Russ).
Review
For citations:
Voronina T.A., Litvinova S.A., Filatova Y.B. Gender differences in the formation of the epileptic system in male and female rats depending on the stage of the estrous cycle on the model of focal cobalt epilepsy. Pharmacokinetics and Pharmacodynamics. 2021;(3):26-30. (In Russ.) https://doi.org/10.37489/2587-7836-2021-3-26-30