Cited by 193Neuroscience and Neuropharmacology ResearchNeurogenesis and neuroplasticity mechanismsSteroid Chemistry and Biochemistry

Effects of Progesterone Synthesized De Novo in the Developing Purkinje Cell on Its Dendritic Growth and Synaptogenesis

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Sakamoto, Hirotaka, Ukena, Kazuyoshi, Tsutsui, Kazuyoshi·2001·The Journal of Neuroscience

Abstract

De novo steroidogenesis from cholesterol is a conserved property of vertebrate brains, and such steroids synthesized de novo in the brain are called neurosteroids. The identification of neurosteroidogenic cells is essential to the understanding of the physiological role of neurosteroids in the brain. We have demonstrated recently that neuronal neurosteroidogenesis occurs in the brain and indicated that the Purkinje cell actively synthesizes several neurosteroids de novo from cholesterol in vertebrates. Interestingly, in the rat, this neuron actively synthesizes progesterone de novo from cholesterol only during neonatal life, when cerebellar cortical formation occurs most markedly. Therefore, in this study, the possible organizing actions of progesterone during cerebellar development have been examined. In vitro studies using cerebellar slice cultures from newborn rats showed that progesterone promotes dose-dependent dendritic outgrowth of Purkinje cells but dose not affect their somata. This effect was blocked by the anti-progestin RU 486 [mifepristone; 17beta-hydroxy-11beta-(4-methylaminophenyl)-17alpha-(1-propynyl) estra-4,9-dien-3 one-6-7]. In vivo administration of progesterone to pups further revealed an increase in the density of Purkinje spine synapses electron microscopically. In contrast to progesterone, there was no significant effect of 3alpha,5alpha-tetrahydroprogesterone, a progesterone metabolite, on Purkinje cell development. Reverse transcription-PCR-Southern and immunocytochemical analyses showed that intranuclear progesterone receptors were expressed in Purkinje cells. These results suggest that progesterone promotes both dendritic outgrowth and synaptogenesis in Purkinje cells through intranuclear receptor-mediated mechanisms during cerebellar development. Such organizing actions may contribute to the formation of the cerebellar neuronal circuit.

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Crossref · 10.1523/jneurosci.21-16-06221.2001

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Research works printed but not linked: 2

  1. [19]19. Fuxe K, Gustafsson JA, Wetterberg L (1981) Steroid hormone regula- tion of the brain. Oxford: Pergamon.
  2. [51]51. Tsutsui K, Ukena K (2000) Neuronal neurosteroidogenesis in the cere- bellum. In: Proceedings of international symposium on molecular ste- roidogenesis (Okamoto M, Ishimura Y, Nawata H, eds), pp 397-400. Tokyo: Universal Academy.

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Authors
Sakamoto, H., Ukena, K., & Tsutsui, K.
Affiliations
Hiroshima University (JP)
Venue
The Journal of Neuroscience
Published
2001-08-15
Volume
21
Issue
16
Pages
6221-6232
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1783731643
Cited by
193
References
64
Citations by year
2026: 1 · 2025: 7 · 2024: 5 · 2023: 4 · 2022: 6 · 2021: 4 · 2020: 4 · 2019: 9 · 2018: 3 · 2017: 5 · 2016: 9 · 2015: 6 · 2014: 7 · 2013: 6 · 2012: 16
FWCI
4.05
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed
Funders
  • University of Central Lancashire
  • Japan Society for the Promotion of Science (11354010, 12440233)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
progesterone, neurosteroidogenesis, Purkinje cells, dendritic outgrowth, synaptogenesis, cerebellar development, RU486, cerebellar slice cultures, neural circuit formation
MeSH terms
Animals, Animals, Newborn, Cerebellum, Dendrites, Dose-Response Relationship, Drug, Female, Hormone Antagonists, Male, Pregnanolone, Progesterone, Purkinje Cells, Rats, Inbred F344, Receptors, Progesterone, RNA, Messenger, Synapses, Mifepristone, Receptors, Cytoplasmic and Nuclear, Rats, Calbindins, S100 Calcium Binding Protein G, In Vitro Techniques

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