Corazonin promotes tegumentary pigment migration in the crayfish Procambarus clarkii

被引：19
作者：
Porras, MG
De Loof, A
Breuer, M
Aréchiga, H
机构：
[1] Univ Nacl Autonoma Mexico, Fac Med, Div Estudios Posgrad & Invest, Mexico City 04510, DF, Mexico
[2] Katholieke Univ Leuven, Inst Zool, Louvain, Belgium
来源：
PEPTIDES | 2003年 / 24卷 / 10期
关键词：
adipokinetic hormone; corazonin; crayfish; crustaceans; insects; neuropetides; neurosecretion; pigments; red pigment concentrating hormone;
D O I：
10.1016/j.peptides.2003.08.016
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The undecapeptide corazonin (pGlu-Thr-Phe-Gln-Tyr-Ser-His-Gly-Trp-Thr-AsnNH(2)) elicits a retraction of erythrophore pigment granules and dispersion of leucophore pigment granules in the crayfish Procambarus clarkii. The effects are dose-dependent from 10(-10) to 10(-5) M. Influence on erythrophores is lower than that of Red Pigment Concentrating Hormone (RPCH), which is inactive on leucophores. Corazonin effects are partly blocked by an anti-corazonin antibody, and even less by an anti-RPCH antibody. Corazonin effects are completely suppressed by the calcium chelator BAPTA. Immunoreactive somata and fibers were identified in various regions of the eyestalk (medulla terminalis, medulla interna and medulla externa) with the anti-corazonin antibody. These results suggest the possible existence of a corazonin-like peptide in crustaceans. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码：1581 / 1589
页数：9
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