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TYROSINE HYDROXYLASE IN RAT BRAIN: DEVELOPMENTAL CHARACTERISTICS

TYROSINE HYDROXYLASE IN RAT BRAIN: DEVELOPMENTAL CHARACTERISTICS Abstract— The development of tyrosine hydroxylase (tyrosine 3‐hydroxylase, EC 1.14.3.a) activity has been examined in whole rat brain and in various regions and subcellular fractions thereof. The specific activity of tyrosine hydroxylase increased almost 15‐fold from 15 days of gestation to adulthood. With maturation, those regions of the brain that contain only terminals of the catecholaminergic neurons showed the greatest increases in enzyme activity. There was a shift in the subcellular distribution of tyrosine hydroxylase from the soluble fraction in the fetal brain to the synaptosomal fraction in the adult brain. Tyrosine hydroxylase, dopamine hydroxylase (EC 1.14.2.1) and the specific uptake mechanism for norepinephrine appear to develop in a coordinated fashion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neurochemistry Wiley

TYROSINE HYDROXYLASE IN RAT BRAIN: DEVELOPMENTAL CHARACTERISTICS

Journal of Neurochemistry , Volume 19 (4) – Apr 1, 1972

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References (18)

Publisher
Wiley
Copyright
Copyright © 1972 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0022-3042
eISSN
1471-4159
DOI
10.1111/j.1471-4159.1972.tb01431.x
Publisher site
See Article on Publisher Site

Abstract

Abstract— The development of tyrosine hydroxylase (tyrosine 3‐hydroxylase, EC 1.14.3.a) activity has been examined in whole rat brain and in various regions and subcellular fractions thereof. The specific activity of tyrosine hydroxylase increased almost 15‐fold from 15 days of gestation to adulthood. With maturation, those regions of the brain that contain only terminals of the catecholaminergic neurons showed the greatest increases in enzyme activity. There was a shift in the subcellular distribution of tyrosine hydroxylase from the soluble fraction in the fetal brain to the synaptosomal fraction in the adult brain. Tyrosine hydroxylase, dopamine hydroxylase (EC 1.14.2.1) and the specific uptake mechanism for norepinephrine appear to develop in a coordinated fashion.

Journal

Journal of NeurochemistryWiley

Published: Apr 1, 1972

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