Abstract:
:Somatostatin-like immunoreactivity was localized in nerve cell bodies and nerve terminals in the cat coeliac ganglion. Two types of somatostatin-immunoreactive cell bodies were revealed, the first being large (diameter 35 microns), numerous and weakly labelled, whereas the second was considerably smaller (diameter 10.4 microns), sparsely distributed and heavily stained. The immunoreactive nerve terminals were in synaptic contact with many immunonegative large neurons and dendrites. However, in a few cases, somatostatin-immunoreactive nerve terminals could also be observed on the surface of lightly stained neurons. Transection of vagal or mesenteric nerves failed to affect the distribution or density of somatostatin-like immunoreactive nerve terminals. These results demonstrate the existence of a synaptic input to the principal neurons of the coeliac ganglion of the cat by somatostatin-containing nerve terminals and suggest that this peptide may act as a neuromodulator or neurotransmitter. It is proposed that somatostatin-positive neurons provide intrinsic projections to other somatostatin-positive and to somatostatin-negative neurons throughout the coeliac ganglion, thereby creating a complex interneuronal system.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Fehér E,Burnstock Gdoi
10.1007/BF00327290subject
Has Abstractpub_date
1991-03-01 00:00:00pages
567-72issue
3eissn
0302-766Xissn
1432-0878journal_volume
263pub_type
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