Bennis M, Repérant J, Tramu G. Evidence for co-existence of CCK-8 and GnRH in neurons of the mesencephalic tegmentum in the chameleon.
Neurosci Lett 1998;
240:155-8. [PMID:
9502227 DOI:
10.1016/s0304-3940(97)00939-7]
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Abstract
A double-label immunofluorescence technique was used to demonstrate the co-localization of cholecystokinin-8 (CCK-8) and gonadotrophin-releasing hormone (GnRH) in individual neurons and processes of the chameleon brain. Co-localization was limited to a small population of cells in the dorsomedial tegmentum; in other regions of the brain, neurons were observed to be either CCK-8-immunopositive or GnRH-immunopositive but never both. However, double-labeled fibers and terminals were found to be distributed at a low density throughout the thalamus, the medial hypothalamus, the tegmentum and the spinal cord. These data provide the first indication for the co-localization of CCK-8 and GnRH, whose functional significance remains to be established. ON
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