Steroid regulation of excitability in identified insect neurosecretory cells
نویسندگان
چکیده
منابع مشابه
Steroid regulation of excitability in identified insect neurosecretory cells.
In the moth Manduca sexta, the declining ecdysteroid titer on the final day of the molt from the fourth to the fifth larval instar acts on the ventromedial neurosecretory cells (VM cells) to stimulate the release of eclosion hormone (EH). EH then triggers the motor programs involved in ecdysis behavior. Intracellular recordings that were made from the VM cells throughout the intermolt and molti...
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Peptidergic neurons and neurosecretory cells often contain multiple peptides, where they may be present in characteristic ratios. In this article, we describe how a set of five colocalized and coreleased peptides, two adipokinetic hormones (AKH I and AKH II), and three dimeric peptides (APRP 1, 2, and 3) are synthesized by the neurosecretory cells of the corpora cardiaca of the locust Schistoce...
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The architecture of neurosecretory cells (NSCs) from each of two bilaterally symmetrical clusters of somata in the brain of the moth, Manduca sexta, was determined by intracellular injection of Lucifer Yellow and horseradish peroxidase. Furthermore, the ionic basis of the action potential in these cells was examined. NSC somata were visualized in the desheathed pupal protocerebrum by their refl...
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متن کاملRegulation of insect steroid hormone biosynthesis by innervating peptidergic neurons.
In insects, steroid hormones named ecdysteroids elicit molting and metamorphosis. The prothoracic gland (PG) is a predominant source of ecdysteroids, where their biosynthesis (ecdysteroidogenesis) is regulated by several neuropeptides. Here, we report that FMRFamide-related peptides (FaRPs) regulate ecdysteroidogenesis through direct innervation of the PG in the silkworm Bombyx mori. We purifie...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 1994
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.14-03-01812.1994