The aim of the present work was to compare the effects of blockade of 5-HT1A or 5-HT2A/2C serotonin receptors on depression-like behavior in adult female rats with experimental estrogen deficiency whose mothers had been subjected to prenatal stress during pregnancy. Two weeks after removal of the ovaries, ovariectomized (OE) prenatally stressed female rats received chronic administration of the 5-HT1A serotonin receptor antagonist NAN-190 (0.1 mg/kg, i.p.) or the 5-HT2A/2C serotonin receptor antagonist ketanserin (0.1 mg/kg, i.p.) alone or in combination with a low dose of 17β-estradiol (0.5 μg/rat, s.c.) for 14 days before behavior tests started and then until tests were completed. The behavioral methods used were the Porsolt test and the open field test. The results showed that chronic administration of NAN-190 to OE prenatally stressed females led to a prodepressive effect, while the combination of NAN-190 with low-dose 17β-estradiol, conversely, had an antidepressant effect in the Porsolt test. In the open field test, these two experimental groups of rats showed decreases in the amounts of grooming reactions, vertical motor activity, and exploratory activity. Administration of ketanserin to OE prenatally stressed females produced an antidepressant effect, as compared with control animals. However, combined administration of ketanserin and low-dose 17β-estradiol to OE prenatally stressed females had no positive effect on the behavior of the animals in the Porsolt test.
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Translated from Rossiiskii Fiziologicheskii Zhurnal imeni I. M. Sechenova, Vol. 101, No. 1, pp. 35–43, January, 2015.
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Fedotova, Y.O., Pivina, S.G., Akulova, V.K. et al. Features of the Action of Combined Administration of NAN-190 and Ketanserin with Low-Dose 17β-Estradiol on Depression-Like Behavior in Prenatally Stressed Rats. Neurosci Behav Physi 46, 571–575 (2016). https://doi.org/10.1007/s11055-016-0279-9
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DOI: https://doi.org/10.1007/s11055-016-0279-9