Summary
Levels of dopamine (DA), noradrenaline (NA) and 5-hydroxytryptamine (serotonin, 5-HT) and their metabolites, and the activities of tyrosine hydroxylase (TH), tryptophan hydroxylase (TPH) and monoamine oxidase A and B (MAO-A and MAO-B) have been determined in the rat posterior thalamus after enucleation during postnatal development. DA and 5-HT turnover rate have been measured as 3,4-dihydroxyphenylalanine (DOPA) and 5-hydroxytryptophan (5-HTP) accumulation rates after central decarboxylase inhibition by 3-hydroxybenzylhydrazine (NSD-1015). The major changes were an increase in noradrenergic and serotoninergic metabolism in enucleated animals compared with control animals. A decrease of the MAO-A to MAO-B ratio during postnatal development was found.
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Abbreviations
- DA :
-
dopamine
- DOPAC :
-
3,4-dihydroxyphenylacetic acid
- HVA :
-
homovanillic acid
- DOPA :
-
3,4-dihydroxyphenylalanine
- NA :
-
noradrenaline
- MHPG :
-
3-methoxy-4-hydroxyphenylgly-col
- NMN :
-
normetanephrine
- TRP :
-
tryptophan
- 5-HTP :
-
5-hydroxytryptophan
- 5-HT :
-
serotonin
- 5-HIAA :
-
5-hydroxy-3-indolacetic acid
- TH :
-
tyrosine hydroxylase
- TPH :
-
tryptophan hydroxylase
- MAO-A :
-
monoamine oxidase-A
- MAO-B :
-
monoamine oxidase-B
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Recipients of fellowships from I.I.E. del FISS Reincorporación de doctores y tecnólogos del M.E.C., and Perfeccionamiento de doctores y tecnólogos del MEC, Spain
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Vizuete, M.L., Santiago, M., Herrera, A.J. et al. Effects of neonatal bilateral eye enucleation on postnatal development of the monoamines in posterior thalamus of the rat. J. Neural Transmission 85, 231–242 (1991). https://doi.org/10.1007/BF01244948
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DOI: https://doi.org/10.1007/BF01244948