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Expression of steroid sulfatase during embryogenesis
N A Compagnone1, E Salido, L J Shapiro
1Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco 94143, USA.
Endocrinology
|November 5, 1997
Summary
Neurosteroids impact brain function by modulating receptors like GABA(A). The study reveals the enzyme steroid sulfatase (STS) is expressed in key embryonic brain regions, suggesting its role in neurosteroid regulation.
Area of Science:
- Neuroscience
- Endocrinology
- Developmental Biology
Background:
- Neurosteroids, synthesized in the brain, modulate neuronal function via receptors like GABA(A).
- Steroid hormones exist as free or sulfated forms, with potential opposing effects on neuronal activity.
- Regulation of steroid sulfation may significantly influence nervous system development and behavior.
Purpose of the Study:
- To investigate the developmental expression of steroid sulfatase (STS), an enzyme crucial for converting sulfated steroids to free steroids.
- To understand the role of STS in the developing central nervous system.
Main Methods:
- In situ hybridization was used to detect STS messenger RNA (mRNA) expression.
- Analysis focused on the embryonic mouse cortex, hindbrain, and thalamus during late gestation.
Main Results:
- STS mRNA was found to be expressed in the embryonic mouse cortex, hindbrain, and thalamus.
- Expression patterns of STS were similar to those of P450c17, another key enzyme in steroidogenesis.
- This suggests a coordinated action between STS and P450c17 in specific neurodevelopmental processes.
Conclusions:
- The developmental expression of STS in critical brain regions indicates its importance in regulating neurosteroid levels during brain formation.
- Concerted actions of STS and P450c17 may play significant roles in neurodevelopmental processes.
- Further research into STS function can illuminate mechanisms underlying neurosteroid-mediated brain development and function.