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Keywords: proctolin
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Journal Articles
J Exp Biol (2012) 215 (19): 3394–3402.
Published: 1 October 2012
... examined the role of a locust FGLa/AST (Scg-AST-6) in the gut. Proctolin and Scg-AST-6 have opposing effects on gut contraction, where proctolin dose-dependently increases gut muscle tension, while Scg-AST-6 inhibits both muscle tension and spontaneous and neurogenic contractions in a dose-dependent manner...
Journal Articles
J Exp Biol (2005) 208 (4): 737–747.
Published: 15 February 2005
...J. L. Wilkens; T. Shinozaki; T. Yazawa; H. E. D. J. ter Keurs SUMMARY At the threshold concentration (1-10 pmol l -1 ), the neuropeptide hormones proctolin (PR) and the FLRFamide-like peptide (FLP) F 2 cause an increase in amplitude of electrically evoked contractions (each contraction is a brief...
Journal Articles
J Exp Biol (2004) 207 (21): 3731–3739.
Published: 1 October 2004
...% 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...
Journal Articles
Journal Articles
J Exp Biol (1997) 200 (3): 487–493.
Published: 1 February 1997
... and dorsal abdominal) exhibits a unique spectrum of responses to a battery of neurotransmitters (acetylcholine, glutamic acid, γ -aminobutyric acid) and neurohormones (dopamine, octopamine, 5-hydroxytryptamine, crustacean cardioactive peptide, FLRFamide-related peptides F1 and F2, and proctolin...
Journal Articles
J Exp Biol (1995) 198 (12): 2547–2550.
Published: 1 December 1995
... proctolin, crustacean cardioactive peptide (CCAP) and the FMRFamide-related peptides F1 and F2, all of which are found in the pericardial organs located immediately upstream of the heart. Cardioexcitatory activity has been demonstrated by these four peptides in both isolated and semi-isolated arthropod...
Journal Articles
J Exp Biol (1995) 198 (11): 2325–2336.
Published: 1 November 1995
... mosquitoes ( Aedes aegypti ). Proctolin, leucomyosuppressin (LMS), serotonin and octopamine, which are known to modulate insect muscle contractions, and a mosquito neuropeptide, Aedes Head Peptide I (Aea-HP-I), which inhibits host-seeking behavior, were tested in the bioassays. LMS depressed contractile...
Journal Articles
Journal Articles
J Exp Biol (1993) 174 (1): 321–342.
Published: 1 January 1993
... −1 ) and proctolin (10 −8 mol l −1 ) induce contractions of the muscle, while GABA (10 −4 mol l −1 ) reduces potassium-induced depolarizations. HPLC, bioassay and immunological methods show that proctolin is associated with all of the ventral ovipositor muscles, and combined back-filling...
Journal Articles
J Exp Biol (1993) 174 (1): 343–362.
Published: 1 January 1993
...Jim H. Belanger; Ian Orchard ABSTRACT The pentapeptide proctolin has multiple effects on the locust oviposition digging system. At the neuromuscular junction of the ventral opener muscle, it has a concentration-dependent range of modulatory effects. At low concentrations (10 −10 mol l −1...
Journal Articles
J Exp Biol (1991) 156 (1): 607–610.
Published: 1 March 1991
...C. A. Bishop; M. E. Krouse; J. J. Wine ABSTRACT Using the single-channel patch-clamp technique we have recently shown that the peptide cotransmitter proctolin can potentiate the activity of a large (38 pS in 137 mmol l −1 Ba 2+ ; 26 pS in 137 mmol l −1 Ca 2+ ), depolarization-inducible Ca 2...
Journal Articles
Journal Articles
J Exp Biol (1989) 145 (1): 419–437.
Published: 1 September 1989
...J. R. Groome; W. H. Watson, III ABSTRACT The biochemical mechanisms by which octopamine, catecholamines and the peptide proctolin exert their actions on Limulus cardiac muscle were investigated. Amines produced long-lasting increases in the amplitude of contractions evoked by electrical stimulation...
Journal Articles
J Exp Biol (1986) 124 (1): 115–141.
Published: 1 September 1986
... that alter motoneuronal output. We have localized serotonin to identified neurones in the lobster ventral nerve cord and have shown further that the pentapeptide proctolin coexists with the amine in these cells. Such neurones provide a convenient system in which to study the functional interactions between...
Journal Articles
J Exp Biol (1984) 111 (1): 123–130.
Published: 1 July 1984
...Taketeru Kuramoto; Arinobu Ebara ABSTRACT Systolic pressure in the abdominal artery of the lobster Panulirus japonicus (Von Siebold) was decreased by contraction of the cardioarterial valve located at the posterior exit of the heart. Crustacean neurohormones, octopamine and proctolin, induced...
Journal Articles
Journal Articles