Summary
In this work, we have studied the time-course of the effects of pharmacological administration of ovarian steroids on tyrosine hydroxylase (TH) activity in the limbic forebrain of ovariectomized rats. Administration of estradiol produced a late decrease in TH activity. This effect was found 24 hours after the last steroid injection, disappearing at 32 hours. It was antagonized by progesterone, since a single injection of this steroid to estradiol-pretreated rats reversed to control values the estradiol-induced decrease. Nevertheless, the administration of progesterone after estradiol treatment caused a short-time decrease in the limbic activity of TH, which was observed 4 hours after the last steroid injection, disappearing subsequently. On the other hand, the administration of progesterone alone produced a biphasic effect, with a reduction at 24 hours, followed by an increase at 32 hours. These effects were only observed in the animals non-treated with estradiol, disappearing with a previous treatment with estrogens. Hence, it can be concluded that both ovarian steroids may affect the limbic TH activity. Thus, estradiol produced a late inhibitory effect on the activity of this enzyme, which was antagonized by progesterone. Administration of the last one to estradiol-treated rats produced a short-time inhibitory effect, whereas its administration to non-treated rats produced a late biphasic effect (inhibition followed by stimulation), which was not observed in estradiol-treated rats.
Similar content being viewed by others
References
Bedard P, Boucher R, Di Paolo T, Labrie F (1984) Interaction between estradiol, prolactin and striatal dopaminergic mechanisms. In: Hassler RG, Christ JF (eds) Advances in neurology, vol 40. Raven Press, New York, pp 489–495
Blumberg JB, Vetulani J, Stawarz RF, Sulser F (1976) The noradrenergic cyclic AMP generating system in the limbic forebrain: pharmacological characterization and possible role in the mode of action of antipsychotics. Eur J Pharmacol 37: 357–366
Chesselet MF (1984) Presynaptic regulation of neurotransmitter release in the rat brain. Neuroscience 12: 347–375
Clopton JK, Gordon JH (1985) The possible role of 2-hydroxyestradiol in the developement of estrogen-induced striatal dopamine receptor hypersensitivity. Brain Res 333: 1–10
Crowley WR (1982) Effects of ovarian hormones on norepinephrine and dopamine turnover in individual hypothalamic and extrahypothalamic nuclei. Neuroendocrinology 34: 381–386
Di Paolo T, Dupont A, Daigle M (1982) Effect of chronic estradiol treatment on dopamine concentrations in discrete brain nuclei of hypophysectomized female rats. Neurosci Lett 32: 295–299
Di Paolo T, Rouillard C, Bedard P (1985) 17-Beta-estradiol at physiological dose acutely increased dopamine turnover in rat brain. Eur J Pharmacol 117: 197–203
Di Paolo T, Levesque D, Daigle M (1986) A physiological dose of progesterone affects rat striatum biogenic amine metabolism. Eur J Pharmacol 125: 11–16
Dluzen DE, Ramirez VD (1984) Bimodal effect of progesterone on in vitro dopamine function of the rat corpus striatum. Neuroendocrinology 39: 149–155
Dupont A, Di Paolo T, Gagne B, Barden N (1981) Effect of chronic estrogen treatment on dopamine levels and turnover in discrete brain nuclei of ovariectomized rats. Neurosci Lett 22: 69–74
Fernández-Ruiz JJ, Esquifino AI, Steger RW, Amador AG, Bartke A (1987) Presence of tyrosine hydroxylase in anterior pituitary adenomas and ectopic anterior pituitaries in male rats. Brain Res 421: 65–68
Fernández-Ruiz JJ, Pais JR, Cebeira M, Ramos JA (1988) Decreased dopamine turnover in striatum of female rats bearing ectopic pituitaries or with bilateral ovariectomy. Biogenic Amines 5: 115–123
Fernández JJ, Amor JC, Ramos JA (1989 a) Time-dependent effects of estradiol and progesterone on the number of striatal dopaminergic D 2-receptors. Brain Res 476: 388–395
Fernández-Ruiz JJ, Alvarez-Sanz C, Ramos JA (1989 b) 2-Hydroxyestradiol is not mediating the effect of estradiol on tuberoinfundibular dopaminergic neurons controlling prolactin secretion in female rats. J Steroid Biochem 32: 71–75
Gunnet JW, Lookingland KJ, Moore KE (1986) Effects of gonadal steroids on tuberoinfundibular and tuberohypophysial dopaminergic neuronal activity in male and female rats. Proc Soc Exp Biol Med 183: 48–53
Heritage AS, Stumpf WE, Sar M, Grand LD (1980) Brainstem catecholamine neurons are target sites for sex steroid hormones. Science 207: 1377–1379
Holsboer F (1982) Hormones. In: Hippius H, Winkur G (eds) Psychopharmacology. Excerpta Medica, Amsterdam, pp 144–156
Hruska RE (1986) Elevation of striatal dopamine receptors by estrogen: dose and time studies. J Neurochem 47: 1908–1915
Hruska RE, Nowak MW (1988) Estrogen treatment increase the density of D 1-dopamine receptors in the rat striatum. Brain Res 442: 349–350
Kalra SP, Kalra PS (1983) Neural regulation of luteinizing hormone secretion in the rat. Endocr Rev 4: 311–351
Löfström A (1979) Effects of progesterone on catecholamine content in parts of the limbic system and preoptic area. Psychoneuroendocrinology 4: 75–79
Louilot A, Taghzouti K, Simon H, Le Moal M (1989) Limbic system, basal ganglia and dopaminergic neurons. Brain Behav Evol 33: 157–161
Luine VN, McEwen BS (1977) Effect of oestradiol on turnover of type A monoamine oxidase in brain. J Neurochem 28: 1221–1227
MacLusky NJ, McEwen BS (1978) Oestrogen modulate progestin receptor concentrations in some rat brain regions but not in others. Nature 274: 276–278
MacLusky NJ, McEwen BS (1980) Progestin receptors in rat brain: distribution and properties of cytoplasmic progestin-binding sites. Endocrinology 106: 192–202
Maggi A, Pérez J (1985) Role of female gonadal hormones in the CNS: clinical and experimental aspects. Life Sci 37: 893–906
McEwen BS (1981) Neural gonadal steroid actions. Science 211: 1303–1311
McEwen BS, Parsons B (1982) Gonadal steroid action on the brain: neurochemistry and neuropharmacology. Annu Rev Pharmacol Toxicol 22: 555–598
Nagatsu T, Oka K, Kato T (1979) Highly sensitive assay for tyrosine hydroxylase by high performance liquid chromatography. J Chromatogr 163: 247–252
Nowycky MC, Roth RH (1978) Dopaminergic neurons: role of presynaptic receptors in the regulation of transmitter biosynthesis. Prog Neuropsychopharmacol 2: 139–158
Parsons B, Rainbow TC, MacLusky NJ, McEwen BS (1982) Progestin receptor levels in rat hypothalamic and limbic nuclei. J Neurosci 2: 1446–1452
Raiteri M, Cerrito F, Del Carmine R, Levi J (1980) Studies on the mechanism of release of biogenic amines from central nerve endings. In: Levi-Montalcini R (ed) Nerve cells, transmitters and behaviour. Elsevier-North Holland Biomedical Press, Amsterdam, pp 319–339
Rajakumar G, Chiu P, Chiu S, Johnson RL, Mishra RK (1987) 17-beta-Estradiol-induced increase in brain dopamine D2 receptor: antagonism by MIF-1. Peptides 8: 997–1002
Ramos JA, Pais JR, Cebeira M, Fernández-Ruiz JJ (1987) Role of estrogens on striatal dopaminergic activity. J Steroid Biochem 27: 683–689
Rance N, Wise PW, Barraclough CA (1981) Negative feedback effects of progesterone correlated with changes in hypothalamic norepinephrine and dopamine turnover rates, median eminence luteinizing hormone releasing hormone and peripheral plasma gonadotropins. Endocrinology 108: 2194–2199
Smith SS, Waterhouse BD, Woodward DJ (1987) Sex steroid effects on extrahypothalamic CNS. II. Progesterone, alone and in combination with estrogen modulates cerebellar responses to amino acid neurotransmitters. Brain Res 422: 52–62
Starke K (1981) Presynaptic receptors. Annu Rev Pharmacol Toxicol 21: 7–30
Towle AC, Sze PY (1983) Steroid binding to synaptic plasma membrane: differential binding of glucocorticoids and gonadal steroids. J Steroid Biochem 18: 135–143
Zigmond RE, Schwarzschild MH, Rittenhouse AR (1989) Acute regulation of tyrosine hydroxylase by nerve activity and by neurotransmitters via phophorylation. Annu Rev Neurosci 12: 415–461
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hernández, M.L., Fernández-Ruiz, J.J., de Miguel, R. et al. Time-dependent effects of ovarian steroids on tyrosine hydroxylase activity in the limbic forebrain of female rats. J. Neural Transmission 83, 77–84 (1991). https://doi.org/10.1007/BF01244454
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01244454