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Détection immunohistochimique chez des planaires marines (Plathelminthes Tricladida) de la 5-hydroxydtryptamine et de neuropeptides apparentés à ceux des vertébrés = Immunohistochemical detection in marine planarians (Plathelminthes Tricladida) of 5-hydroxytryptamine and of neuropeptides related to vertebrate neuropeptides
Tekaya, S.; Dhainaut-Courtois, N. (1996). Détection immunohistochimique chez des planaires marines (Plathelminthes Tricladida) de la 5-hydroxydtryptamine et de neuropeptides apparentés à ceux des vertébrés = Immunohistochemical detection in marine planarians (Plathelminthes Tricladida) of 5-hydroxytryptamine and of neuropeptides related to vertebrate neuropeptides. Cah. Biol. Mar. 37(2): 121-133
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Tekaya, S.
  • Dhainaut-Courtois, N.

Abstract
    Antibodies raised against vertebrate peptides have been used in the study of invertebrates since more than 20 years. This has made it possible to develop the molecular phylogeny concept, with all the carefulness required to avoid wrong interpretations due to unspecific cross-reactions. It is now clearly established that some families of molecules appeared very early in the course of evolution, in primitive metazoan such as the cnidarians, whereas others were only detected in invertebrates occupying higher positions in the phylogenetical tree. Among worms, many groups have been investigated. However, most studies have been focused on the description of the nervous system. In addition, reports concerning marine planarians are still rare. In order to contribute to a more complete knowledge of the relationships between flatworms and other invertebrates, we studied two marine planarians Procerodes lobata and, to a lesser extent, Sabussowia dioica, which are of interest because of their primitive phylogenetic position. Several antibodies raised against leu- and met-enkephalin, alpha -neo-endorphin, beta -endorphin, dynorphin 1-17, somatostatin, GRF, substance P, CCK-8s, FMRF-amide, and 5-hydroxytryptamine were tested on whole body worm sections. The results given by immunoreactions (IR) were compared with those obtained with histochemical technics used for neurosecretory products, and with the results reported by other authors for a diversity of species.

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