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| Destoumieux, Delphine. |
| Haemocytes are the key elements of a complex defence system on which crustacean immunity is largely based. We report here for the first time in a crustacean that haemocytes are involved in the synthesis of antimicrobial peptides similar to those described in other arthropod classes. These molecules isolated from the penaeid shrimp Penaeus vannamei are members of an homogeneous farnily which differ from the antimicrobial peptides previously described in that they combine in a single molecule a proline-rich arninoterminal domain, and a cyclic carboxy-terminal domain containing three intramolecular disulphide bridges. In addition, penaeidins bear post-translational modifications at their arnino- and carboxy-termini. Five molecules of the penaeidin family were... |
| Tipo: Text |
Palavras-chave: Crustacé; Crevette; Immunité; Hémocyte; Peptide; Antimicrobien; Cationique. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00440/55111/56564.pdf |
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| Li, Hui. |
| The mytiliculture is one of the most important aquaculture in the world, however, little is known on the mussel immune system, which plays a critical role in case of infectious diseases. Like all the other invertebrates, our model, the Mediterranean mussel Mytilus galloprovincialis, possesses only an innate immune system considered to be primitive and non-specific. In the present study, our results showed that the mussel immune system (i) is capable of responding differently to a variety of stimulations, suggesting a specific recognition process; (ii) reacts differently according to the geographic origin of the animals, showing an adaptation to their own environment; (iii) is influenced by the season, which explains the seasonal mortalities; (iv) presents... |
| Tipo: Text |
Palavras-chave: Mytilus; Haemocyte; Antimicrobial peptides; Polymorphism; Genetic regulation; Innate immunity; Mytilus; Hémocyte; Peptides antimicrobiens; Polymorphisme; Régulation génétique; Immunité innée. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/these-6241.pdf |
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| Le Moullac, Gilles; Boglio, Eric; Goarant, Cyrille. |
| Une substance immunostimulante administrée par voie orale est testée chez la crevette Penaeus stylirostris. Cette expérimentation est réalisée à la station de St Vincent afin de se rapprocher des conditions du Syndrôme 93. Les effets sont mesurés pendant 2 semaines sur des paramètres hématologiques (hémocytes totaux, cellules à grands granules, coloration spécifique : cellules incorporant le rouge neutre). D'autre part un stress des crevettes en cage sur un fond réduit en bassin constitue le challenge. L'administration de l'immunostimulant par voie orale augmente significativement le nombre des hémocytes totaux, ainsi que les cellules incorporant le rouge neutre. Cependant le stress de la mise en cage sur fond réduit n'a pas déclenché de mortalité de type... |
| Tipo: Text |
Palavras-chave: Penaeus stylirostris; Syndrome 93; Immunostimulant; Hémocyte; Stade de mue.. |
| Ano: 1997 |
URL: https://archimer.ifremer.fr/doc/00680/79245/81762.pdf |
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