Document Detail

Biochemical and immunohistochemical analyses of GnRH-like peptides in the nerve ganglion of the chiton, Acanthopleura japonica.
MedLine Citation:
PMID:  21110718     Owner:  NLM     Status:  In-Process    
We examined whether a gonadotropin-releasing hormone (GnRH)-like peptide is present in the nerve ganglion of the chiton Acanthopleura japonica (Mollusca, Polyplacophora) using reverse-phase high performance liquid chromatography (rpHPLC) combined with time-resolved fluoroimmunoas-say (TR-FIA) analysis, and immunohistochemistry. An extract of the chiton head region showed a similar retention time to that of synthetic lamprey GnRH-II on rpHPLC combined with TR-FIA analysis using a rabbit polyclonal antibody raised against chicken GnRH-II (aCII6). Cell bodies immunostained with LRH13 (a mouse monoclonal antibody raised against the common amino acid sequence of vertebrate GnRH) were detected in the cerebrobuccal ring (CBR). Cell bodies immunostained with aCII6 were not only observed in the CBR but also in the lateral nerve cord (LCo). Fibers immunostained with LRH13 and aCII6 were widely distributed throughout the central nervous system in the CBR, subradular ganglion (SubRG), pedal nerve cord (PCo), pedal commissure (P/PCom), lateropedal commissure (L/PCom), and from the LCo to the suprarectal commissure (SupRecCom). The cell bodies and fibers immunostained with these two antisera were distinguishable by dual-label immunohistochemistry. These results suggest that multiple GnRH-like peptides are present in the nerve ganglion of the chiton Acanthopleura japonica.
Masafumi Amano; Takehiko Yokoyama; Noriko Amiya; Mineka Hotta; Yoko Takakusaki; Ryusuke Kado; Yoshitaka Oka
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zoological science     Volume:  27     ISSN:  0289-0003     ISO Abbreviation:  Zool. Sci.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8702287     Medline TA:  Zoolog Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  924-30     Citation Subset:  IM    
School of Marine Biosciences, Kitasato University, Ofunato, Iwate 022-0101, Japan.
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