Turkesterone
Turkesterone is a phytoecdysteroid possessing an 11alpha-hydroxyl group, also is an analogue of the insect steroid hormone 20-hydroxyecdysone. It has immunomodulating and antistress activity, can increase the adaptation capacity of mice under immobilization-induced stress conditions.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Vopr Med Khim. 1986 Sep-Oct;32(5):24-8.
Comparative study of the effect of ecdysterone, turkesterone and nerobol on the function of rat liver mitochondria in experimental diabetes[Pubmed:
3776112 ]
METHODS AND RESULTS:
Oxidative phosphorylation and Ca2+-transport functions of liver mitochondria were normalized in rats with alloxane diabetes after peroral administration of phytoecdisteroids - ecdisterone and Turkesterone (5 mg/kg) or nerobol (10 mg/kg) within 15 days.
CONCLUSIONS:
These drugs normalized the activity of NADH dehydrogenase and succinate dehydrogenase in respiratory chain of mitochondria, increased distinctly stability of the enzymes to the effect of such factors as heating, effect of phospholipase A2 or trypsin.
Pharm.Chem. J., 2010, 44(1):7-9.
Immunomodulating and antistress activity of ecdysterone and turkesterone under immobilization-induced stress conditions in mice.[Reference:
WebLink]
METHODS AND RESULTS:
The phytoecdysteroids ecdysterone and Turkesterone isolated from Rhaponticum integrifolium and Ajuga turkestanica herbs, respectively, increase the adaptation capacity of mice under immobilization-induced stress conditions. These compounds prevent involution of the thymicolymphatic system, decrease trophic disorders in gastric mucosa, prevent an increase in the weight of adrenal glands and a decrease in them of the content of ascorbic acid and cholesterol (to a much greater degree than does T-activin), and stimulate immunogenesis in animals with experimental immune deficiency developed on the background of immobilization-induced stress. Key wordsecdysterone-Turkesterone-T-activin-immobilization-induced stress-immobilization.
Vopr Med Khim. 1978 Jul-Aug;24(4):456-60.
Effect of turkesterone and nerobol on the activity of the protein synthesizing system of mouse liver[Pubmed:
685188]
METHODS AND RESULTS:
Protein biosynthesis was stimulated in liver tissue in vivo and in vitro after administration into mice of either phytoecdizone of Turkesterone (0.5 mg/100 g) or of anabolic steroid compound nerobole (1 mg/100 g). Stimulation of protein biosynthesis was due to an increase in functional activity of polyribosomes and to elevation in the synthesis of protein molecules.
CONCLUSIONS:
Actinomycin D, which inhibited the stimulation of protein biosynthesis in liver tissue of mice treated with nerobole, did not affect the phenomenon in mice treated with Turkesterone.
J Insect Sci. 2003;3:6. Epub 2003 Feb 24.
Synthesis and biological activities of turkesterone 11alpha-acyl derivatives.[Pubmed:
15841223]
Turkesterone is a phytoecdysteroid possessing an 11alpha-hydroxyl group. It is an analogue of the insect steroid hormone 20-hydroxyecdysone. Previous ecdysteroid QSAR and molecular modelling studies predicted that the cavity of the ligand binding domain of the ecdysteroid receptor would possess space in the vicinity of C-11/C-12 of the ecdysteroid.
METHODS AND RESULTS:
We report the regioselective synthesis of a series of Turkesterone 11alpha-acyl derivatives in order to explore this possibility. The structures of the analogues have been unambiguously determined by spectroscopic means (NMR and low-resolution mass spectrometry). Purity was verified by HPLC. Biological activities have been determined in Drosophila melanogaster B(II) cell-based bioassay for ecdysteroid agonists and in an in vitro radioligand-displacement assay using bacterially-expressed D. melanogaster EcR/USP receptor proteins. The 11alpha-acyl derivatives do retain a significant amount of biological activity relative to the parent ecdysteroid. Further, although activity initially drops with the extension of the acyl chain length (C2 to C4), it then increases (C6 to C10), before decreasing again (C14 and C20).
CONCLUSIONS:
The implications of these findings for the interaction of ecdysteroids with the ecdysteroid receptor and potential applications in the generation of affinity-labelled and fluorescently-tagged ecdysteroids are discussed.
