Abstract:
:1. The effects of radiofrequency lesions of the ventral noradrenergic bundle (VNB) on monoamine and metabolite concentrations in several discrete areas of the rat hypothalamus were examined. Monoamines and metabolites were analyzed utilizing high-performance liquid chromatography coupled with electrochemical detection. 2. VNB lesions decreased the concentrations of norepinephrine (NE) and 3-methoxy-4-hydroxyphenylethylene glycol in all areas examined except in the ventromedial nucleus (VMN). Dopamine and 3,4-dihydroxyphenylacetic acid concentrations were selectively decreased in the dorsomedial nucleus (DMN) and also slightly decreased in the medial forebrain bundle following VNB lesions. Serotonin and 5-hydroxyindole-3-acetic acid concentrations were not altered by VNB lesion in any area examined. 3. The results indicate that the NE innervation to the hypothalamus is extensive and that NE in the VMN may not be derived from the VNB. The source of the DA innervation to the DMN may be located in or pass through the area affected by the VNB lesion.
journal_name
Cell Mol Neurobioljournal_title
Cellular and molecular neurobiologyauthors
Johnston CA,Mattiace LA,Negro-Vilar Adoi
10.1007/BF00733792subject
Has Abstractpub_date
1987-12-01 00:00:00pages
403-11issue
4eissn
0272-4340issn
1573-6830journal_volume
7pub_type
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