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  • Title: Occurrence of ACTH- and enkephalin-like peptides in the developing gut of Dicentrarchus labrax L.
    Author: Mola L, Bertacchi I, Gambarelli A, Pederzoli A.
    Journal: Gen Comp Endocrinol; 2004 Mar; 136(1):23-9. PubMed ID: 14980793.
    Abstract:
    We carried out immunohistochemical tests in the developing gut of the sea bass Dicentrarchus labrax to follow the appearance and distribution of the immunoreactivity (IR) to antibodies against POMC-derived, adrenocorticotropic hormone (ACTH), alpha-melanocyte stimulating hormone (alpha-MSH) and beta-endorphin (beta-End), and against two enkephalins, with the aim to study a possible involvement of these molecules in the early neuro-immune-endocrine integration. Our data show that IR to antibodies against some molecules involved in the stress response, such as ACTH and enkephalins, are present in the sea bass gut from an early larval stage (4 days after hatching), before transition to the exotrophic feeding. Moreover, the present study demonstrates for the first time the presence of ACTH-like immunoreactive material in developing gut of a fish. The possible roles of tested molecules are discussed.
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