... by neuropeptides directly affecting the muscle. The FGLa-type allatostatins (FGLa/ASTs) are known brain/gut peptides with numerous physiological roles, including modulation of gut contraction and neural input. To further investigate the pleiotropic roles of FGLa/AST peptides in Locusta migratoria , we have...

... such variability in the modulatory effects of the peptide C-type allatostatin (C-AST; pQIRYHQCYFNPISCF) on the cardiac neuromuscular system of the lobster Homarus americanus . Perfusion of C-AST through the semi-intact heart consistently decreased the frequency of ongoing contractions. However, the effect of C-AST...

.... In this study, we have characterized for the first time the physiological actions of the peptides red pigment concentrating hormone (RPCH), Cancer borealis tachykinin-related peptide Ia (CabTRP Ia) and allatostatin III type A (AST-3) on the isolated CG of the crab, Cancer borealis . RPCH and CabTRP Ia excited...

... voltage ( V te ) that is present with serotonin in the bath; this voltage most likely reflects active HCO 3 – secretion involved in alkalization of the larval anterior stomach. The five different A. aegypti allatostatins(allatostatin A 1–5) all affected V te in almost identical ways, causing a 10–15...

... ecdysterostatic hormone neurosecretion allatostatin epiproctodeal gland Hormonal regulation of molting and metamorphosis in Manduca sexta has been studied extensively and shown to be primarily under the control of juvenile hormone (JH) and ecdysteroids (reviewed by Nijhout, 1994 ; Gäde et al., 1997...

...Petra Skiebe; Henning Schneider ABSTRACT The effects of four Diploptera punctata allatostatin peptides on the stomatogastric nervous system of the crab Cancer borealis were studied. All of the peptides had similar actions on the activity of neurons involved in rhythmic movements of the pyloric...