Results 21 to 30 of about 8,028 (164)
Increased insulin/insulin growth factor signaling advances the onset of metamorphosis in Drosophila. [PDF]
Mechanisms by which attainment of specific body sizes trigger developmental transitions to adulthood (e.g. puberty or metamorphosis) are incompletely understood.
Magdalena A Walkiewicz, Michael Stern
doaj +1 more source
Nutritional control of body size through FoxO-Ultraspiracle mediated ecdysone biosynthesis
Despite their fundamental importance for body size regulation, the mechanisms that stop growth are poorly understood. In Drosophila melanogaster, growth ceases in response to a peak of the molting hormone ecdysone that coincides with a nutrition ...
Takashi Koyama +4 more
doaj +1 more source
InDrosophila, ecdysone-regulated genes are bound by a heterodimer of ecdysone receptor (EcR) and Ultraspiracle. Here, the authors provide evidence of a non-canonical complex containing EcR and the nucleosome remodeller dMi-2 that limits transcription of ...
Judith Kreher +10 more
doaj +1 more source
Third instar larvae of Stomoxys calcitrans (L.) were treated with precocene II, ecdysone and juvenile hormone. The larvae were allowed to develop until pupation and when it occurred, determination of glycogen levels was assayed.
M. L. M. Garcia +2 more
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Coordinated regulation of niche and stem cell precursors by hormonal signaling. [PDF]
Stem cells and their niches constitute units that act cooperatively to achieve adult body homeostasis. How such units form and whether stem cell and niche precursors might be coordinated already during organogenesis are unknown.
Dana Gancz, Tamar Lengil, Lilach Gilboa
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Pupariation in Drosophila is triggered by the steroid-hormone ecdysone and requires coordination between associated behavioral and body-reshaping motor subprograms.
Fabiana Heredia +19 more
doaj +1 more source
Deep sequencing of the prothoracic gland transcriptome reveals new players in insect ecdysteroidogenesis. [PDF]
Ecdysteroids are steroid hormones that induce molting and determine developmental timing in arthropods. In insect larva, the prothoracic gland (PG) is a major organ for ecdysone synthesis and release.
Takayoshi Nakaoka +8 more
doaj +1 more source
Effects of methoxyfenozide on ecdysone receptor complex expression in larval Asian gypsy moth
As a target of insect growth regulators, the ecdysone receptor complex binds ecdysone agonists to regulate gene transcription, development, and growth.
Wu Shao-ping +6 more
doaj +1 more source
Interactions of ultraspiracle with ecdysone receptor in the transduction of ecdysone‐ and juvenile hormone‐signaling [PDF]
Analyses of integration of two‐hormone signaling through the vertebrate nuclear hormone receptors, for which the retinoid X receptor is one partner, have generated a number of mechanistic models, including those described as ‘subordination’ models wherein ligand‐activation of one partner is subordinate to the liganded state of the other partner ...
Fang, Fang +3 more
openaire +2 more sources
The steroid hormone ecdysone regulates growth rate in response to oxygen availability
In almost all animals, physiologically low oxygen (hypoxia) during development slows growth and reduces adult body size. The developmental mechanisms that determine growth under hypoxic conditions are, however, poorly understood.
George P. Kapali +4 more
doaj +1 more source

