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[Brain development and gonadal hormones].

¹Department of Anatomy, Juntendo University School of Medicine, Tokyo.

No to Hattatsu = Brain and Development

|March 1, 1991

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Gonadal steroids are crucial for sexual differentiation of the brain by influencing neuron development and synapse formation. These hormones also support ongoing neuronal plasticity in specific brain regions.

Area of Science:

Neuroendocrinology
Neurobiology
Developmental Neuroscience

Context:

Sexual differentiation of the brain is a complex process influenced by various factors.
Gonadal steroids, such as estrogen and testosterone, are key hormonal regulators.
Evidence suggests these steroids impact neural structure and function.

Purpose:

To explore the role of gonadal steroids in the sexual differentiation of the brain.
To investigate how gonadal steroids influence neuronal development and plasticity.
To understand the morphological underpinnings of sexually dimorphic brain functions.

Summary:

Gonadal steroids are vital for establishing functional sexual differentiation in the brain.
They regulate critical developmental processes including neuron number, axonal and dendritic growth, and synapse formation.

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These steroids also contribute to maintaining neuronal plasticity in specific brain areas post-development.

Impact:

Provides morphological evidence for sexually dimorphic brain functions.
Highlights the continuous role of gonadal steroids beyond development.
Informs our understanding of neurodevelopmental disorders and hormonal influences on the brain.