Results 1 to 10 of about 2,109 (94)

A validated HPLC-MS/MS method for the simultaneous determination of ecdysteroid hormones in subminimal amounts of biological material [PDF]

open access: yesJournal of Lipid Research
Ecdysteroids represent a large class of polyhydroxylated steroids which, due to their anabolic properties, are marketed as dietary supplements. Some ecdysteroids also act as important hormones in arthropods, where they regulate molting, development, and ...
Lucie Marešová   +5 more
doaj   +2 more sources

Sterol Regulation of Development and 20-Hydroxyecdysone Biosynthetic and Signaling Genes in Drosophila melanogaster [PDF]

open access: yesCells, 2023
Ecdysteroids are crucial in regulating the growth and development of insects. In the fruit fly Drosophila melanogaster, both C27 and C28 ecdysteroids have been identified.
Di Wen   +3 more
doaj   +2 more sources

Beyond boundaries: Neuroprotective effects of steroids and ecdysteroids in SH‐SY5Y cells ‐ A systematic review [PDF]

open access: yesNeuroprotection
Steroids and ecdysteroids have been shown to exhibit a range of biological effects, including anti‐inflammatory, anticancer, and neuroprotective. This systematic review aims to highlight the evidence‐based neuroprotective and antioxidant effects of ...
Bizhar Ahmed Tayeb   +2 more
doaj   +2 more sources

Furostanol Saponins and Ecdysteroids from Plants of the Genus Helleborus as Phagostimulants and Predator Deterrents for Larvae of Two Monophadnus Sawfly Species [PDF]

open access: yesPlants
Sawfly species of the genus Monophadnus are specialised on Ranunculaceae plants from which the larvae can sequester furostanol saponins into the haemolymph, mainly (25R)-26-[(α-L-rhamnopyranosyl)oxy]-22α-methoxyfurost-5-en-3β-yl-O-β-D-glucopyranosyl-(1→3)
Jose M. Prieto   +5 more
doaj   +2 more sources

17-Oxime ethers of oxidized ecdysteroid derivatives modulate oxidative stress in human brain endothelial cells and dose-dependently might protect or damage the blood-brain barrier. [PDF]

open access: yesPLoS ONE
20-Hydroxyecdysone and several of its oxidized derivatives exert cytoprotective effect in mammals including humans. Inspired by this bioactivity of ecdysteroids, in the current study it was our aim to prepare a set of sidechain-modified derivatives and ...
Máté Vágvölgyi   +8 more
doaj   +2 more sources

Ecdysteroids

open access: yesEncyclopedia, 2021
Ecdysteroid: member of a class of polyhydroxylated steroids found in invertebrate animals (zooecdysteroids; moulting hormones), plants (phytoecdysteroids) and fungi (mycoecdysteroids). Over 500 structural analogues are currently known.
René Lafont   +2 more
doaj   +1 more source

CasEcR and CasMIH Genes in the Blue Crab, Callinectes sapidus: A Temporal Evaluation and Melatonin Effects

open access: yesFrontiers in Physiology, 2022
Environmental cues synchronize endogenous rhythms of many physiological processes such as hormone synthesis and secretion. Little is known about the diurnal pattern of hormones and gene expression of the Callinectes sapidus molt cycle.
Daniela Dantas David   +7 more
doaj   +1 more source

Transcriptome Analysis Reveals the Endocrine Regulation on the Expression of IAG in Litopenaeus vannamei

open access: yesJournal of Marine Science and Engineering, 2021
The insulin-like androgenic gland hormone (IAG) plays a key role in male sexual differentiation and spermatogenesis in crustaceans. The expression of IAG is usually negatively regulated by neuropeptide hormones through the “eyestalk-AG” endocrine axis ...
Kangxuan Chen   +4 more
doaj   +1 more source

Ecdysteroids regulate the levels of Molt-Inhibiting Hormone (MIH) expression in the blue crab, Callinectes sapidus. [PDF]

open access: yesPLoS ONE, 2015
Arthropod molt is coordinated through the interplay between ecdysteroids and neuropeptide hormones. In crustaceans, changes in the activity of Y-organs during the molt cycle have been regulated by molt-inhibiting hormone (MIH) and crustacean ...
Sirinart Techa, J Sook Chung
doaj   +1 more source

Role of Endocrine System in the Regulation of Female Insect Reproduction

open access: yesBiology, 2021
The proper synthesis and functioning of ecdysteroids and juvenile hormones (JHs) are very important for the regulation of vitellogenesis and oogenesis.
Muhammad Zaryab Khalid   +3 more
doaj   +1 more source

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