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Developmental expression of the basic fibroblast growth factor gene in rat brain
1Department of Anatomy and Cell Biology, Georgetown University, School of Medicine, Washington, DC 20007.
Brain Research. Developmental Brain Research
|September 19, 1991
Summary
Basic fibroblast growth factor (bFGF) is crucial for brain cell development and maintenance. Its mRNA expression peaks around postnatal day 21, indicating its importance in central nervous system maturation.
Area of Science:
- Neuroscience
- Molecular Biology
- Developmental Biology
Background:
- Basic fibroblast growth factor (bFGF) acts as a vital trophic factor for diverse neuronal and glial cell types.
- Understanding bFGF's role is key to comprehending central nervous system development and function.
Purpose of the Study:
- To investigate the expression patterns and developmental regulation of bFGF mRNA in the rat brain.
- To map the distribution of bFGF mRNA across different brain structures throughout development.
Main Methods:
- Utilized RNase protection assay with a cRNA probe specific to the bFGF mRNA coding region.
- Analyzed bFGF mRNA levels in various brain regions of rats at different developmental stages (newborn, postnatal day 21, adult, aged).
Main Results:
- bFGF mRNA is widely distributed in the adult rat brain, with highest concentrations in the cerebral cortex, hippocampus, and spinal cord.
- Expression levels are low at birth, rise significantly to peak around postnatal day 21, and remain stable in adulthood and old age.
- Significant differences in bFGF mRNA levels were observed between brain structures during the first two postnatal weeks.
Conclusions:
- The developmental expression profile of bFGF mRNA suggests a critical role in the maturation of central nervous system cell populations.
- bFGF is important for both the development and ongoing maintenance of neuronal and glial cells.