Document Detail

3H estradiol in catecholamine neurons of rat brain stem: combined localization by autoradiography and formaldehyde-induced fluorescence.
MedLine Citation:
PMID:  562904     Owner:  NLM     Status:  MEDLINE    
3H setradion-17beta was localized in nuclei of catecholamine (CA) neurons of the rat lower brain stem, i.e., midbrain, pons and medulla, by employing a combined formaldehyde-induced fluorescence (FIF)-autoradiography approach which permits the direct visualization of 3H estradiol uptake in relation to CA-neuron perikarya and terminals. In the medulla, noradrenalin (NA)-containing neurons in and adjacent to the nucleus (n.) reticularis lateralis (group A1) and in the vicinity of the n. tractus solitarii (group A2) concentrated 3H estradiol. In the pons, NA neurons dorsal to the n. olivaris superior (group A5), in the locus ceruleus (group A6) and ventral to the pedunculus cerebellaris superior (group A7) displayed 3H estradiol uptake. In the midbrain, dopamine (DA)-containing neurons in the n. cuneiformis (group A8), in the zona compacta of the substantia nigra (group A9) and adjacent to the n. interpeduncularis (group A10), were not seen to concentrate 3H estradiol. This is in contrast to DA neurons in the n. arcuatus of the hypothalamus (group A12), previously reported to concentrate 3H estradiol. In addition, certain non-CA-containing neurons with nuclear uptake of 3H estradiol were observed to be surrounded by CA terminals in such areas as substantia grisea centralis, n. tractus solitarii and n. tractus spinalis nervi trigemini. This suggests a second mode of interaction between CA neurons and estrogen target neurons. The estradiol-CA neuron relationships described may provide morphological substrates underlying functional interactions between estradiol and CA neurons in the rat brain.
A S Heritage; L D Grant; W E Stumpf
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of comparative neurology     Volume:  176     ISSN:  0021-9967     ISO Abbreviation:  J. Comp. Neurol.     Publication Date:  1977 Dec 
Date Detail:
Created Date:  1978-01-27     Completed Date:  1978-01-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0406041     Medline TA:  J Comp Neurol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  607-30     Citation Subset:  IM    
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MeSH Terms
Brain Stem / metabolism*
Catecholamines / metabolism*
Estradiol / metabolism*
Medulla Oblongata / metabolism
Mesencephalon / metabolism
Microscopy, Fluorescence
Pons / metabolism
Reg. No./Substance:
0/Catecholamines; 50-00-0/Formaldehyde; 50-28-2/Estradiol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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