An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)

Allatotropin (AT), a neuropeptide isolated on the basis of its ability to stimulate the synthesis of juvenile hormones (JHs) in insects, has also been found in other groups. In addition to this function, AT has proved to be myotropic. In the present study, we analyze its expression in the free-livin...

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Detalles Bibliográficos
Autores principales: Adami, Mariana Laura, Damborenea, María Cristina, Ronderos, Jorge Rafael
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Zoología
Biología
Mesostoma ehrenbergii
Neuropeptides
Myoregulators
Platyhelminthes
Allatotropin
Phalloidin
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/146082
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-146082
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Biología
Mesostoma ehrenbergii
Neuropeptides
Myoregulators
Platyhelminthes
Allatotropin
Phalloidin
spellingShingle Zoología
Biología
Mesostoma ehrenbergii
Neuropeptides
Myoregulators
Platyhelminthes
Allatotropin
Phalloidin
Adami, Mariana Laura
Damborenea, María Cristina
Ronderos, Jorge Rafael
An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)
topic_facet Zoología
Biología
Mesostoma ehrenbergii
Neuropeptides
Myoregulators
Platyhelminthes
Allatotropin
Phalloidin
description Allatotropin (AT), a neuropeptide isolated on the basis of its ability to stimulate the synthesis of juvenile hormones (JHs) in insects, has also been found in other groups. In addition to this function, AT has proved to be myotropic. In the present study, we analyze its expression in the free-living turbellarian Mesostoma ehrenbergii (Platyhelminthes: Typhloplanida) and its probable functional relationship with the muscle tissue. The results show the presence of an AT-like peptide in neurons located in different regions of the body of the flatworm. The analysis of the presence of the peptide together with phalloidin labeling suggests a functional relationship between the peptide and the muscle tissue. This is particularly evident at the level of the pharynx, where the peptide induces contractions at concentrations of 10⁻¹⁴ and 10⁻¹² M, suggesting that it is actually acting as a myoregulator. Detection of AT in several groups of protostomes but apparently not in deuterostomes suggests that this peptide could be a synapomorphic feature of protostomes. Indeed, the presence of AT in organisms that do not undergo metamorphosis could suggest that it was first involved in myotropic activities, being the induction of the synthesis of JHs a secondary function.
format Articulo
Articulo
author Adami, Mariana Laura
Damborenea, María Cristina
Ronderos, Jorge Rafael
author_facet Adami, Mariana Laura
Damborenea, María Cristina
Ronderos, Jorge Rafael
author_sort Adami, Mariana Laura
title An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)
title_short An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)
title_full An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)
title_fullStr An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)
title_full_unstemmed An allatotropin-like neuropeptide in Mesostoma ehrenbergii (Rhabdocoela, Platyhelminthes)
title_sort allatotropin-like neuropeptide in mesostoma ehrenbergii (rhabdocoela, platyhelminthes)
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/146082
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