Review of octopamine in insect nervous systems
The roles of OCT in insect nervous systems at the behavioral and molecular levels are described, including the regulation of motivation, desensitization of sensory inputs, arousal, initiation, and maintenance of various rhythmic behaviors, hygiene behavior, and complex social behaviors.
Octopamine-Mediated Neuromodulation of Insect Senses
- BiologyNeurochemical Research
The main objective of this review is to discuss significance of octopamine-mediated neuromodulation in insect sensory systems.
The role of octopamine in locusts and other arthropods.
- BiologyJournal of insect physiology
TYRAMINE AND OCTOPAMINE: Ruling Behavior
Octopamine and tyramine are structurally related to adrenaline and noradrenaline and have similar physiological roles, which points to an earlyevolutionary origin of the adrenergic/octopaminergic/tyraminergic system.
Tyramine and octopamine: ruling behavior and metabolism.
- BiologyAnnual review of entomology
Progress made on all levels of OA and TA research has enabled researchers to understand better the molecular events underlying the control of complex behaviors, and these events represent promising targets for new insecticides.
Characterization of tyramine β-hydroxylase, an enzyme upregulated by stress in Periplaneta americana.
- BiologyJournal of molecular endocrinology
TBH could be considered as a promising biomarker of stress in insects rather than OA, as it is found mainly expressed in nervous tissues and in octopaminergic dorsal unpaired median neurons.
Tyramine and octopamine: antagonistic modulators of behavior and metabolism.
- BiologyArchives of insect biochemistry and physiology
Recent progress made on all levels of octopamine/tyramine research enabled us to better understand the molecular events underlying the control of complex behaviors.
The Effect of Octopamine on the Locust Stomatogastric Nervous System
- Biology, MedicineFront. Physio.
The findings suggest a mechanism of regulation of insect gut patterns and feeding-related behavior during stress and times of high energy demand in locust stomatogastric nervous system.
The control of metabolic traits by octopamine and tyramine in invertebrates
- BiologyJournal of Experimental Biology
The monoamines octopamine and tyramine play a pivotal role in the control of metabolism in invertebrates by regulating both energy intake and energy expenditure.
Pn 17 Features
Observations in the buccal ganglia HPLC demonstrate that octopamine is acting as a transmitter in this system and show that the octopaminergic synapses are biphasic, which means that the effect of the synapse is very dependent on the initial membrane potential of the postsynaptic neuron.
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Octopamine in insects: neurotransmitter, neurohormone, and neuromodulator
It is shown that octopamine can act as a neurotransmitter, a neurohormone, and a neuromodulator within the nervous system of invertebrates and in locusts, an identified octopaminergic neuron innervates the extensor-tibiae muscle of the hind legs.
An octopaminergic neurone modulates neuromuscular transmission in the locust
It is demonstrated that octopamine is the neurotransmitter of a single identified neurone in the locust Schistocerca americana gregaria, which innervates a muscle where it functions as a neuromodulator by potentiating the synaptic potential and tension produced by an identified motoneurone.
Octopamine—a neurohormone with presynaptic activity-dependent effects at crayfish neuromuscular junctions
Enhanced postsynaptic potentials produced by very low levels of octopamine are largely attributable to a presynaptic effect which increases quantal release of transmitter, providing a model for selective consolidation of active synapses by neurohormonal mechanisms.
Aminergic and Peptidergic Neuromodulation in Crustacea
- Biology, Chemistry
The postural neuromuscular system of the lobster, Homarus americanus, provides a convenient system in which to study the functional interactions between peptide and amine cotransmitters, and the serotonin and proctolin phenotypes of these cells are first expressed at widely different times in development.
The Actions of Proctolin, Octopamine and Serotonin on Crustacean Proprioceptors Show Species and Neurone Specificity
The broad distribution of modulatory effects observed here suggests that sensitivity to biogenic amines and peptides is a general property of proprioceptors, and that there is species specificity in the responses of homologous neurones.
Pharmacology of the octopamine receptor from locust central nervous tissue (OAR3)
- Biology, ChemistryBritish journal of pharmacology
A variety of substances with known insecticidal activity such as chlordime form, demethylchlor‐dimeform, amitraz or AC 6 had high affinity for the locust neuronal octopamine receptor.
A Novel Octopamine Receptor with Preferential Expression inDrosophila Mushroom Bodies
- BiologyThe Journal of Neuroscience
The preferential expression of OAMB in mushroom bodies and its capacity to produce cAMP accumulation suggest an important role in synaptic modulation underlying behavioral plasticity.
Octopamine receptors on Aplysia neurones mediate hyperpolarisation by increasing membrane conductance
OCTOPAMINE is a phenylethylamine synthesised by β-hydroxylation of tyramine and differs from noradrenaline in lacking one hydroxyl group on the phenyl ring. Although Aplysia nervous tissue, like that…
Photoaffinity Labeling of a Neuronal Octopamine Receptor
- Biology, ChemistryJournal of neurochemistry
Abstract: The invertebrate aminergic neurotransmitter and neuromodulator octopamine (OA) acts at both neuronal and nonneuronal receptors that appear to have distinct pharmacological characteristics.…