Neuroscience 2001 Abstract
| Presentation Number: | 908.4 |
|---|---|
| Abstract Title: | TYRAMINE-IMMUNOREACTIVE NEURONS IN THE CNS OF THE CRAYFISH, <i>PROCAMBARUS CLARKII.</i> |
| Authors: |
Komatsu, A.*1
1Dept. of Physiology, Tokyo Women's Med. Univ., Sch. of Medicine, Tokyo, Japan |
| Primary Theme and Topics |
Synaptic Transmission and Excitability - Neurotransmitters -- Other |
| Session: |
908. Neurotransmitters: other II Poster |
| Presentation Time: | Thursday, November 15, 2001 11:00 AM-12:00 PM |
| Location: | Exhibit Hall D-51 |
| Keywords: | BIOGENIC AMINE, NEUROTRANSMITTER, IMMUNOHISTOCHEMISTRY, INVERTEBRATE |
We previously reported that tyramine inhibits glutamatergic excitatory junction potentials (EJPs) and that tyramine-immunoreactive neurons are present and innervate the muscles in Drosophila larvae, supporting the function of tyramine as a neuromediator (Komatsu et al., 2000, SFN Abstracts). To determine whether tyraminergic neurons are present in animals other than Drosophila, anti-tyramine antibody was used to stain the tyramine-containing neurons in the CNS of the crayfish, Procambarus clarkii. In the supraesophageal ganglion there are two groups of large somata, one in the anterior and the other in the posterior regions. Axons of both neuron groups run the entire ventral nerve cord, reaching to the terminal abdominal ganglion. The subesophageal and thoracic ganglia have many ventral unpaired median (VUM) neurons which send axons to the periphery. Of six abdominal ganglia only the third ganglion has a pair of ventral somata located in the anterior lateral region which send axons in the anterior ipsilateral connectives. Tyramine-immunoreactive neurons have also been reported in the gastropod CNS (Osborne, 1985). Taken together with the presence of tyramine in relatively higher concentrations in invertebrate nervous tissues than that in mammalian ones, these results suggest that tyraminergic neurons are present in a wide range of invertebrate phyla.
Supported by Japan MECSST
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2001 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2001. Online.
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