Petri, Bernhard and Homberg, Uwe and Loesel, Rudolf and Stengl, Monika (2002) Evidence for a role of GABA and Mas-allatotropin in photic entrainment of the circadian clock of the cockroach Leucophaea maderae. JOURNAL OF EXPERIMENTAL BIOLOGY, 205 (10). pp. 1459-1469. ISSN 0022-0949
Full text not available from this repository. (Request a copy)Abstract
Accumulating evidence suggests that the accessory medulla is the location of the circadian pacemaker in the fruit fly Drosophila melanogaster and the cockroach Leucophaea maderae. gamma-Aminobutyric acid (GABA) and Mas-allatotropin are two putative neurotransmitters in the accessory medulla in the cockroach Leucophaea maderae. Neurons immunoreactive to the neuropeptide Mas-allatotropin are local neurons with arborizations in the noduli of the accessory medulla, while GABA-immunoreactive neurons connect the noduli of the accessory medulla to the medulla and to the lamina via processes in the distal tract. Injections of GABA and Mas-allatotropin into the vicinity of the accessory medulla resulted in stable phase-dependent resetting of the circadian locomotor activity of the cockroach. The resulting phase response curves closely matched light-dependent phase response curves, suggesting that both substances play a role in circuits relaying photic information from circadian photoreceptors to the central pacemaker.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CENTRAL-NERVOUS-SYSTEM; HORMONE-IMMUNOREACTIVE NEURONS; ACCESSORY MEDULLA; MANDUCA-SEXTA; SUPRACHIASMATIC NUCLEUS; PERIPLANETA-AMERICANA; SCHISTOCERCA-GREGARIA; LOCUSTA-MIGRATORIA; PACEMAKER NEURONS; TIMELESS GENES; circadian rhythm; locomotor activity; light entrainment; cockroach; insect; Leucophaea maderae; Mas-allatotropin; gamma-aminobutyric acid; GABA; neuropeptide |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Oct 2021 05:38 |
| Last Modified: | 27 Oct 2021 05:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40338 |
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