Petri, Bernhard and Stengl, Monika and Würden, Stefan and Homberg, Uwe (1995) Immunocytochemical characterization of the accessory medulla in the cockroach Leucophaea maderae. CELL AND TISSUE RESEARCH, 282 (1). pp. 3-19. ISSN 0302-766X, 1432-0878
Full text not available from this repository.Abstract
Several lines of evidence suggest that pigment-dispersing hormone-immunoreactive neurons with ramifications in the accessory medulla are involved in the circadian system of insects. The present study provides a detailed analysis of the anatomical and neurochemical organization of the accessory medulla in the brain of the cockroach Leucophaea maderae. We show that the accessory medulla is compartmentalized into central dense nodular neuropil surrounded by a shell of coarse fibers. It is innervated by neurons immunoreactive to antisera against serotonin and the neuropeptides allatostatin 7, allatotropin, corazonin, gastrin/cholecystokinin, FMRFamide, leucokinin I, and pigment-dispersing hormone. Some of the immunostained neurons appear to be local neurons of the accessory medulla, whereas others connect this neuropil to various brain areas, including the lamina, the contralateral optic lobe, the posterior optic tubercles, and the superior protocerebrum. Double-label experiments show the colocalization of immunoreactivity against pigment-dispersing hormone with compounds related to FMRFamide, serotonin, and leucokinin I. The neuronal and neurochemical organization of the accessory medulla is consistent with the current hypothesis for a role of this brain area as a circadian pacemaking center in the insect brain.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HORMONE-IMMUNOREACTIVE NEURONS; CENTRAL-NERVOUS-SYSTEM; PERIPLANETA-AMERICANA; EXTRAOCULAR PHOTORECEPTORS; CIRCADIAN PACEMAKER; VISUAL-SYSTEM; OPTIC LOBE; NEUROPEPTIDES; DROSOPHILA; PEPTIDE; CIRCADIAN RHYTHM; COLOCALIZATION; IMMUNOCYTOCHEMISTRY; BRAIN (CNS), INVERTEBRATE; OPTIC LOBE; PIGMENT-DISPERSING HORMONE, INSECT; LEUCOPHAEA MADERAE (INSECTA) |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 Jan 2024 09:20 |
| Last Modified: | 04 Jan 2024 09:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/52281 |
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