Octopamine-like immunoreactivity in the dorsal unpaired median (DUM) neurons innervating the accessory gland of the male cockroach Periplaneta americana

  title={Octopamine-like immunoreactivity in the dorsal unpaired median (DUM) neurons innervating the accessory gland of the male cockroach Periplaneta americana},
  author={Irina Guennadievna Sinakevitch and Michel Geffard and Marcel Pelhate and Bruno Lapied},
  journal={Cell and Tissue Research},
The musculature of the mushroom-shaped accessory gland receives innervation from trunks 5C1 of the phallic nerves, which arise from the posterior part of the terminal abdominal ganglion of the male cockroach Periplaneta americana. Anterograde cobalt filling through trunks 5C1 with the subsequent precipitating procedure has shown the fine innervation of the accessory gland. By retrograde cobalt filling through the same trunks, different types of cells have been mapped in the terminal abdominal… 

Octopamine‐like immunoreactivity in the honey bee and cockroach: Comparable organization in the brain and subesophageal ganglion

In cockroaches and honey bees structurally comparable systems of perikarya and their extensive yet discrete systems of arborizations in neuropils are revealed and possible roles of octopamine in sensory integration and association are discussed.

A population of descending tyraminergic/octopaminergic projection neurons of the insect deutocerebrum

A cluster of tyraminergic/octopaminergic neurons in the lateral dorsal deutocerebrum of desert locusts with descending axons to the abdominal ganglia are described and it is suggested that these neurons release octopamine in the ventral nerve cord ganglia and, most likely, convey information on arousal and/or stressful stimuli to neuronal circuits thus contributing to the many actions of octopamines in the central nervous system.

Comparison of octopamine‐like immunoreactivity in the brains of the fruit fly and blow fly

A serum raised against conjugated octopamine reveals structurally comparable systems of perikarya and arborizations in protocerebral neuropils of two species of Diptera, Drosophila melanogaster and

Morphological and electrophysiological aspects of dorsal median paired neurons generating plateau action potentials in the terminal abdominal ganglion of the insect central nervous system

The results demonstrate that these neurons are different from other cells, especially dorsal unpaired median neurons, of the central nervous system of the cockroach.

The mushroom bodies of Drosophila melanogaster: An immunocytological and golgi study of Kenyon cell organization in the calyces and lobes

Golgi impregnations reveal a variety of dendritic morphologies amongst Kenyon cells in the mushroom bodies of Drosophila melanogaster, which are comparable to the double calyces of Hymenoptera, here exemplified by a basal taxon, Diprion pini.

Distribution of the Octopamine Receptor AmOA1 in the Honey Bee Brain

The data suggest that one effect of octopamine via AmOA1 in the antennal lobe and mushroom body is to modulate inhibitory neurons.

The Role of octopamine and tyramine in Drosophila larval locomotion

It is shown that a small set of about 40 octopaminergic/tyraminergic neurons within the ventral nerve cord is sufficient to trigger proper larval locomotion, and these data will help to understand—for a given neuronal modulator—how specific behavioral functions are executed within distinct subcircuits of a complex neuronal network.

Tyraminergic and Octopaminergic Modulation of Defensive Behavior in Termite Soldier

It is suggested that the increased TA/OA levels induce the higher aggressiveness and defensive behavior in termite soldiers, inducing the neuronal transition that accompanies external morphological changes.

Neuromodulation of arthropod mechanosensory neurons

It is demonstrated that sensory signals detected by arthropod mechanosensory neurons can also be synaptically modulated before they ever arrive at the axon terminals, thus reducing the synaptic potentials in the postsynaptic neurons.

Neuromodulatory octopaminergic neurons and their functions during insect motor behaviour. The Ernst Florey memory lecture.

A metabolic regulatory role is described for octopamine released in the periphery by efferent dorsal or ventral unpaired median neurons in flight muscles that use carbohydrate catabolism only at take-off but have to switch to lipid oxidation during prolonged flight.



Octopamine-immunoreactive neurons in the central nervous system of the cricket, Gryllus bimaculatus

The distribution of octopamine-immunoreactive neurons is described using whole-mount preparations of all central ganglia of the cricket, Gryllus bimaculatus to discuss possible neurohemal releasing sites forOctopamine.

Structure and distribution of dorsal unpaired median (DUM) neurones in the abdominal nerve cord of male and female locusts

This paper aims to fill the gap by systematically describing the number and morphology of DUM neurones in each of the abdominal ganglia of male and female locusts by backfilled the lateral nerves of each abdominal ganglion to reveal the position of the somata of D UM neurones.

Evidence that insect dorsal unpaired medican (DUM) neurons are octopaminergic.

  • G. Hoyle
  • Biology
    The Journal of experimental zoology
  • 1975
Neither the cell body nor the neuron fluoresces with the Falck-Hillarp treatment, even after a period of ligature has caused an accumulation of vesicles, suggesting that this neuron, and the other efferent DUM neurons, are octopaminergic.

Evidence for octopaminergic modulation of an insect visceral muscle.

The presence ofOctopamine throughout this neural pathway, coupled with the demonstration of octopaminergic modulation of muscular contraction, supports the hypothesis that octopamine serves a physiological role in this visceral system.

Octopamine immunoreactive cell populations in the locust thoracic‐abdominal nervous system

It is suggested that probably all peripherally projecting DUM‐cells are octopaminergic in the examined ganglia and shown to label with an antiserum to γ‐amino butyric acid (GABA).

Synthesis of octopamine by insect dorsal median unpaired neurons.

The observations support the suggestion that the dorsal unpaired median neurons of locusts and grasshoppers are octopaminergic, and the synthesis of biogenic amines from tritiated tyrosine by these neurons is examined.