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Showing 109 to 120 of 120 entries
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Ecdysteroid titres during ovarian and embryonic development inBlaberus craniifer.

Wilhelm Roux's archives of developmental biology

Bullière D, Bullière F, de Reggi M.
PMID: 28305181
Wilehm Roux Arch Dev Biol. 1979 Jun;186(2):103-114. doi: 10.1007/BF00848172.

InBlaberus craniifer, the maturation of the oocytes is accompanied by morphological modifications of the surrounding follicular cells and by variations in the ecdysteroid titre.Before the follicular cells form the chorion, they synthesise ecdysteroids which pass into the terminal oocytes...

Anteroposterior gradient during nymphal-adult moulting cycle of the tropical bont tick, Amblyomma variegatum (Acarina: Ixodidae) : Correlation between ecdysteroid titers and integument structure.

Roux's archives of developmental biology : the official organ of the EDBO

Stauffer A, Connat J-.
PMID: 28305410
Rouxs Arch Dev Biol. 1990 Mar;198(6):309-321. doi: 10.1007/BF00383769.

The structure of the extensible (alloscutum) and inextensible (scutum) integument of the nymph, Amblyomma variegatum was examined during the whole bloodmeal and the nymphal-adult moulting cycle. Integumental events were tentatively correlated with the ecdysteroid levels measured by radioimmunoassay. We...

The endocrine regulation of wing polymorphism in insects: state of the art, recent surprises, and future directions.

Integrative and comparative biology

Zera AJ.
PMID: 21680470
Integr Comp Biol. 2003 Nov;43(5):607-16. doi: 10.1093/icb/43.5.607.

The endocrine mechanisms controlling the development and reproduction of flight-capable (long-winged) and flightless (short-winged or wingless) morphs of wing-polymorphic insects have been intensively investigated. The "classical model," put forward in the early 1960s, postulates that morph-specific differences in development...

Sterol Composition and Ecdysteroid Content of Eggs of the Root-knot Nematodes Meloidogyne incognita and M. arenaria.

Journal of nematology

Chitwood DJ, McClure MA, Feldlaufer MF, Lusby WR, Oliver TE.
PMID: 19290155
J Nematol. 1987 Jul;19(3):352-60.

Free and esterified sterols of eggs of the root-knot nematodes Meloidogyne incognita races 2 and 3 and M. arenaria race 1 were isolated and identified by gas-liquid chromatography-mass spectrometry. The major sterols of eggs of each race were 24-ethylcholesterol...

Sonochemically assisted 2,3-dideoxygenation and skeletal rearrangement of ecdysteroid derivatives.

Ultrasonics sonochemistry

Savchenko RG, Kostyleva SA, Apaeva AV, Mesheryakova ES, Tukhbatullin AA, Odinokov VN, Parfenova LV.
PMID: 30594517
Ultrason Sonochem. 2019 Apr;52:505-511. doi: 10.1016/j.ultsonch.2018.12.029. Epub 2018 Dec 19.

Sonochemical 2,3-dideoxygenation of ecdysteroids with the Δ

Ecdysteroids from the Stem Bark of .

Antibiotics (Basel, Switzerland)

Bunu MI, Ndinteh DT, Macdonald JR, Langat MK, Isyaka SM, Sadgrove NJ, Melnikovova I, Fernandez-Cusimamani E.
PMID: 34438987
Antibiotics (Basel). 2021 Aug 03;10(8). doi: 10.3390/antibiotics10080937.

No abstract available.

Ecdysteroids: production in plant in vitro cultures.

Phytochemistry reviews : proceedings of the Phytochemical Society of Europe

Thiem B, Kikowska M, Maliński MP, Kruszka D, Napierała M, Florek E.
PMID: 28867986
Phytochem Rev. 2017;16(4):603-622. doi: 10.1007/s11101-016-9483-z. Epub 2016 Nov 24.

Ecdysteroids are secondary metabolites, widely distributed in the animal and plant kingdoms. They have a wide range of pharmacological effects in vertebrates, including mammals, most of which are beneficial for humans. Therefore, they have become compounds of interest for...

Effect of elicitation and precursor feeding on accumulation of 20-hydroxyecdysone in .

Physiology and molecular biology of plants : an international journal of functional plant biology

John R, Shajitha PP, Devassy A, Mathew L.
PMID: 29515321
Physiol Mol Biol Plants. 2018 Mar;24(2):275-284. doi: 10.1007/s12298-018-0506-7. Epub 2018 Jan 27.

20-Hydroxyecdysone is one of the most common ecdysteroids in plants with potential therapeutic applications. In this study, cell suspension cultures of

Ecdysteroid Treatment Delays Ecdysis in the Lobster, Homarus americanus.

The Biological bulletin

Cheng JH, Chang ES.
PMID: 29303649
Biol Bull. 1991 Aug;181(1):169-174. doi: 10.2307/1542499.

Premolt stage D3 of juvenile lobsters, Homarus americanus, was further divided into five substages according to the degree of cuticle digestion along the dorsal midline of the carapace and on the dorsal surface of the merus of the chelipeds....

20-Hydroxyecdysone activates the protective arm of the RAAS via the MAS receptor.

Journal of molecular endocrinology

Lafont R, Serova M, Didry-Barca B, Raynal S, Guibout L, Dinan L, Veillet S, Latil M, Dioh W, Dilda PJ.
PMID: 34825653
J Mol Endocrinol. 2021 Dec 23;68(2):77-87. doi: 10.1530/JME-21-0033.

20-Hydroxyecdysone (20E) is a steroid hormone that plays a key role in insect development through nuclear ecdysteroid receptors (EcR/RXR complex) and at least one membrane GPCR receptor (DopEcR). It also displays numerous pharmacological effects in mammals, where its mechanism...

Nonsteroidal ecdysone receptor agonists use a water channel for binding to the ecdysone receptor complex EcR/USP.

Journal of pesticide science

Browning C, McEwen AG, Mori K, Yokoi T, Moras D, Nakagawa Y, Billas IML.
PMID: 33746550
J Pestic Sci. 2021 Feb 20;46(1):88-100. doi: 10.1584/jpestics.D20-095.

The ecdysone receptor (EcR) possesses the remarkable capacity to adapt structurally to different types of ligands. EcR binds ecdysteroids, including 20-hydroxyecdysone (20E), as well as nonsteroidal synthetic agonists such as insecticidal dibenzoylhydrazines (DBHs). Here, we report the crystal structures...

Effects of ultraviolet-filters on Daphnia magna development and endocrine-related gene expression.

Aquatic toxicology (Amsterdam, Netherlands)

Lambert FN, Gracy HR, Gracy AJ, Yoon SH, Scott RW, Rincon DM, Vulpe CD.
PMID: 34329859
Aquat Toxicol. 2021 Jul 17;238:105915. doi: 10.1016/j.aquatox.2021.105915. Epub 2021 Jul 17.

Ultraviolet (UV) filters are emerging contaminants of concern that are widely spread throughout the aquatic environment. Many organic UV filters are endocrine disrupting compounds (EDCs) in vertebrates. However, few studies have assessed their effects on invertebrates. Molting, or the...

Showing 109 to 120 of 120 entries