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Developmental changes of neuropeptides and amino acids in baboon cortex
M F Beal1, L C Walker, K J Swartz
1Neurology Service, Massachusetts General Hospital, Boston 02114.
Brain Research. Developmental Brain Research
|November 1, 1988
Summary
Baboon brain development reveals distinct patterns for neuropeptides and amino acids. Substance P peaked near-term, while others like somatostatin and GABA increased steadily from preterm to adulthood.
Area of Science:
- Neuroscience
- Developmental Biology
- Biochemistry
Background:
- The developing brain undergoes complex molecular changes.
- Understanding the developmental trajectories of neurotransmitters and neuropeptides is crucial for brain development research.
Purpose of the Study:
- To investigate the developmental patterns of substance P, somatostatin, neuropeptide Y, and key amino acids in baboon neocortex.
- To characterize the ontogeny of these neurochemicals from preterm to adult stages.
Main Methods:
- Analysis of occipital and frontal neocortex samples from baboons at different gestational ages (preterm, near-term) and adulthood.
- Quantification of substance P, somatostatin, neuropeptide Y, aspartate, GABA, glutamate, taurine, and alanine concentrations.
Main Results:
- Substance P levels were low preterm, peaked near-term, and declined to adult levels.
- Neuropeptide Y and somatostatin immunoreactivity showed steady increases across development.
- Aspartate and GABA concentrations increased progressively, while taurine and alanine decreased from preterm to adult stages.
Conclusions:
- Neuropeptides and amino acids exhibit distinct developmental patterns in the baboon neocortex.
- These findings provide insights into the neurochemical maturation of the primate brain.
- The study highlights differential regulation of neurochemical systems during cortical development.