2006 Fiscal Year Final Research Report Summary
Neurobiology of hydra primitive nervous system
| Project/Area Number |
17570067
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Animal physiology/Animal behavior
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| Research Institution | Fukuoka Women's University |
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Principal Investigator |
KOIZUMI Osamu Fukoka Women's University, Environmental Science, Professor, 人間環境学部, 教授 (50094777)
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| Co-Investigator(Kenkyū-buntansha) |
MINOBE Sumiko Fukuoka Women's University, Environmental Science, Assistant, 人間環境学部, 助手 (80190718)
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| Project Period (FY) |
2005 – 2006
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| Keywords | diffuse nervous system / hydra / nerve net formation / developmental neurobiology / peptide / immunihistochemistry / antibody production / nerve differentiation |
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| Research Abstract |
(1) Nerve Ring of the Hypostome in Hydrals It an Origin of the Central Nervous System of Bilaterian Animals?
A hypothesis, 'the nerve ring in hydra shares a common origin with the central nervous system in bilaterian animals', was examined. Considering all the information available, the hypothesis is highly possible.
(2) Function of the difuuse nervous system of hydra (neurophysiology, behavioral physiology)
We demonstrated that the simple nervous system of hydra had abilities comparable to central nervous system of the higher animals. We examined our hypothesis : nerve ring in hydra is the origin of the central nervous system of higher nervous system. We identified a function of the nerve ring, which was the coordination of the simulutanous tentacle movement, crumpling..
(3) Is origin of the neurotransmitter is not classical transmitters, but neuroprptides?
We have many experimental evidences which show peptides work as neurotransmitter. However, we could not get any evidences that classical neurotransmitter, such as monoamines or acetylcholine works as neurotransmitter in the diffuse nervous system. NO also dose not work as neuroactive substances between neurons, but locates in the muscle cells.,
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[Journal Article] Biochemical evaluation of hormonal activity of endocrine disruptors by sensing the estrogen receptor conformation changes.2003
Author(s)
Asai, D., Koizumi, O., Mohri.S., Nakai, M., Yakabe, Y., Tokunaga, T, Nose, T., Shimohigashi, Y.
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Journal Title
Peptide Science 2002
Pages: 127-130
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Identification of a vasopressin-like immunoreactive substance in hydra.2003
Author(s)
Morishita, F., Nitagai, Y., Furukawa, Y., Matsushima, O., Takahashi, T., Hatta, M., Fujisawa, T., Tunamoto, T., Koizumi, 0.
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Journal Title
Description
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[Journal Article] Identification of a new member of the GLWamide peptide family : physiological activity and cellular localization in cnidarian polyps.2003
Author(s)
Takahashi, T., Kobayakawa, Y., Muneoka, Y., Fujisawa, Y., Mohri, S., Hatta, M., Shimizu, H., Fujisawa, T., Sugiyama, T., Takahara, M., Yanagi, K., Koizumi, O.
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Journal Title
Comp. Biochem. Physiol. (B) 135
Pages: 309-324
Description
「研究成果報告書概要(欧文)」より
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