... secrete the neuropeptide allatotropin (AT), which stimulates the muscle walls of the rectum, inducing peristaltic contractions and voiding ( Santini and Ronderos, 2007 , 2009a , b ). It was also shown that, during this period, at least three different cellular messengers are involved in a highly...

... to neuroendocrine stimulus. In a related paper, we demonstrated that MTs of Triatoma infestans produce an autonomous endocrine secretion of an allatotropin-like (AT-like) peptide. In the present study, we report a myostimulatory activity of AT at the level of the hindgut(HG), associated with endocrine mechanisms...

...% reduction of the voltage at 10 –7 mol l –1 . A. aegypti neuropeptide F and proctolin reduced V te at submicromolar concentrations. At 10 –6 mol l –1 ,neuropeptide F reduced V te by 30% and proctolin reduced V te by 50%. In contrast, A. aegypti allatotropin, A. aegypti head peptides I and III and A. aegypti...

... are elevated before feeding and low after a blood meal. In the present study, we used an in vitro radiochemical assay to analyze the effect of farnesoic acid(FA) and Aedes allatotropin (Aedes-AT) on the biosynthesis of JH and methyl farnesoate (MF) by the isolated CA complex of A. aegypti adult female. CA...

... demonstrated Manduca sexta allatotropin(Manse-AT)-like immunoreactivity throughout the central nervous system (CNS)in P. unipuncta , and that both Manse-AT and serotonin (5-HT) are dose-dependent stimulators of the dorsal vessel. Here we describe both Manse-AT- and 5-HT-like immunoreactivity associated...

...Kyeong-Yeoll Lee; Frank M. Horodyski; M. E. Chamberlin ABSTRACT Short-circuit current ( I sc ) across the posterior midgut of day 2 fifth-instar tobacco hornworms ( Manduca sexta ) is inhibited by Manduca allatotropin (Mas-AT) and two Manduca FLRFamides (F7G and F7D). Another FLRFamide, F10...

...Jan A. Veenstra; Herman K. Lehman; Norman T. Davis ABSTRACT Allatotropin is a neuropeptide that was originally isolated from the sphinx moth Manduca sexta , in which it stimulates the synthesis of juvenile hormone in adults ( Kataoka et al . 1989 ). An antiserum raised against this peptide...