FMRFamide immunoreactivity in the nervous system of the medusa Polyorchis penicillatus
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FMRFamide immunoreactivity in the nervous system of the medusa Polyorchis penicillatus. / Grimmelikhuijzen, C J; Spencer, A N.
I: Journal of Comparative Neurology, Bind 230, Nr. 3, 10.12.1984, s. 361-71.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - FMRFamide immunoreactivity in the nervous system of the medusa Polyorchis penicillatus
AU - Grimmelikhuijzen, C J
AU - Spencer, A N
PY - 1984/12/10
Y1 - 1984/12/10
N2 - Three different antisera to the molluscan neuropeptide Phe-Met-Arg-Phe-amide (FMRFamide) and two different antisera to the fragment RFamide were used to stain sections or whole mounts of the hydrozoan medusa Polyorchis penicillatus. All antisera stained the same neuronal structures. Strong immunoreactivity was found in neurons of the ectodermal nerve nets of the manubrium and tentacles, in neurons of the sensory epithelium, and in neurons at the periphery of the sphincter muscle. Strong immunoreactivity was also present in processes and perikarya of the whole outer nerve ring, in the ocellar nerves, and in nerve cells lying at the periphery of the ocellus. The inner nerve ring contained a moderate number of immunoreactive processes and perikarya, which were distinct from the swimming motor neurons. In contrast to the situation in the hydrozoan polyp Hydra attenuata, no immunoreactivity was found with several antisera to oxytocin/vasopressin and bombesin/gastrin-releasing peptide. The morphology and location of most FMRFamide-immunoreactive neurons in Polyorchis coincides with two identified neuronal systems, which have been recently discovered from neurophysiological studies.
AB - Three different antisera to the molluscan neuropeptide Phe-Met-Arg-Phe-amide (FMRFamide) and two different antisera to the fragment RFamide were used to stain sections or whole mounts of the hydrozoan medusa Polyorchis penicillatus. All antisera stained the same neuronal structures. Strong immunoreactivity was found in neurons of the ectodermal nerve nets of the manubrium and tentacles, in neurons of the sensory epithelium, and in neurons at the periphery of the sphincter muscle. Strong immunoreactivity was also present in processes and perikarya of the whole outer nerve ring, in the ocellar nerves, and in nerve cells lying at the periphery of the ocellus. The inner nerve ring contained a moderate number of immunoreactive processes and perikarya, which were distinct from the swimming motor neurons. In contrast to the situation in the hydrozoan polyp Hydra attenuata, no immunoreactivity was found with several antisera to oxytocin/vasopressin and bombesin/gastrin-releasing peptide. The morphology and location of most FMRFamide-immunoreactive neurons in Polyorchis coincides with two identified neuronal systems, which have been recently discovered from neurophysiological studies.
KW - Animals
KW - Bombesin
KW - Cnidaria
KW - FMRFamide
KW - Fluorescent Antibody Technique
KW - Nervous System
KW - Oligopeptides
KW - Oxytocin
KW - Scyphozoa
U2 - 10.1002/cne.902300305
DO - 10.1002/cne.902300305
M3 - Journal article
C2 - 6151569
VL - 230
SP - 361
EP - 371
JO - The Journal of Comparative Neurology
JF - The Journal of Comparative Neurology
SN - 0021-9967
IS - 3
ER -
ID: 33514658