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    Carboxyatractyloside
    Information
    CAS No. 77228-71-8 Price $318 / 20mg
    Catalog No.CFN90756Purity>=98%
    Molecular Weight885.1Type of CompoundDiterpenoids
    FormulaC31H43K3O18S2Physical DescriptionPowder
    Download Manual    COA    MSDSSimilar structuralComparison (Web)
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    Biological Activity
    Description: Carboxyatractyloside poisoning causes multiple organ dysfunction and can be fatal, the signs of a poor prognosis including coagulation abnormalities, hyponatraemia, marked hypoglycaemia, icterus and hepatic and renal failure, without antidote. Carboxyatractyloside can induce permeability transition, and that ageing induced mitochondrial DNA disruption and release of cytochrome c; it induces the inhibitory effect of tamoxifen on nonspecific membrane permeability.
    Targets: Calcium Channel | P450 (e.g. CYP17)
    In vitro:
    Life Sci. 2011 Apr 11;88(15-16):681-7.
    Protective action of tamoxifen on carboxyatractyloside-induced mitochondrial permeability transition.[Pubmed: 21324322]
    Mitochondrial permeability transition is established after massive Ca(2+) accumulation inside the matrix, in addition to an inducer. The closure of the pore can be accomplished by adenosine diphosphate and the immunosuppressant cyclosporin A. Recently, the estrogen antagonist, tamoxifen, has been introduced as an inhibitor of the opening of the permeability transition pore. However, the mechanism by which this drug inhibits pore opening is still under discussion. This work was performed with the purpose of establishing the membrane system involved in tamoxifen-induced pore closure. For this purpose, permeability transition was induced after the addition of Carboxyatractyloside, which is a specific reagent that interacts with the adenine nucleotide translocase.
    METHODS AND RESULTS:
    Permeability transition was assessed by analyzing matrix Ca(2+) release, transmembrane electric gradient, and mitochondrial swelling in aged, as well as in freshly prepared mitochondria. Also, cytochrome c content was analyzed in membrane mitochondria as well as in the supernatant. In freshly prepared mitochondria, tamoxifen, at the concentration of 10 μM, totally inhibited nonspecific membrane permeability induced by 1 μM Carboxyatractyloside. In addition, tamoxifen inhibited non-specific permeability in aged mitochondria and diminished membrane fluidity.
    CONCLUSIONS:
    Plausibly, the inhibitory effect of tamoxifen on nonspecific membrane permeability, as induced by Carboxyatractyloside, should be ascribed to a diminution, of membrane fluidity by this drug.
    Radiat Res. 2009 Nov;172(5):575-83.
    Cyclosporin A inhibits UV-radiation-induced membrane damage but is unable to inhibit carboxyatractyloside-induced permeability transition.[Pubmed: 19883225]
    This work was undertaken to gain further information on the chemical characteristics of the membrane entity involved in the formation of the nonspecific pore.
    METHODS AND RESULTS:
    Mitochondria were subjected to oxidative stress by exposure to UV radiation. The results indicate that ultraviolet C radiation induces structural modifications in the adenine nucleotide translocase that lead to membrane permeability transition. Membrane leakage was assessed by measuring mitochondrial Ca2+ transport, the transmembrane electric gradient, and mitochondrial swelling. UV-irradiated mitochondria were unable to retain matrix Ca2+ or to maintain a high level of membrane potential when Ca2+ was added; furthermore, UV-irradiated mitochondria underwent large amplitude swelling. Release of cytochrome c and formation of malondialdehyde, owing to lipid peroxidation, were also seen. Structural modifications of the translocase were revealed by an increase in the binding of the fluorescent probe eosin-5-maleimide to thiol residues of the ADP/ATP carrier.
    CONCLUSIONS:
    These modifications, taken together with findings indicating that cyclosporin resulted unable to inhibit Carboxyatractyloside-induced permeability transition, prompted us to conclude that the translocase could constitute the nonspecific pore or at least be an important modulator of it.
    In vivo:
    Ann Trop Paediatr. 2005 Jun;25(2):125-34.
    Carboxyatractyloside poisoning in humans.[Pubmed: 15949201]
    Cocklebur (Xanthium strumarium) is an herbaceous annual plant with worldwide distribution. The seeds contain the glycoside Carboxyatractyloside, which is highly toxic to animals. We describe nine cases of Carboxyatractyloside poisoning in humans which, to our knowledge, has not previously been reported. The clinical, laboratory and histopathological findings and our therapeutic approach are also discussed.
    METHODS AND RESULTS:
    The patients presented with acute onset abdominal pain, nausea and vomiting, drowsiness, palpitations, sweating and dyspnoea. Three of them developed convulsions followed by loss of consciousness and death. Laboratory findings showed raised liver enzymes, indicating severe hepatocellular damage. BUN and creatinine levels were raised, especially in the fatal cases who also displayed findings of consumption coagulopathy. CPK-MB values indicative of myocardial injury were also raised, especially in the fatal cases. Three of the patients died within 48 hours of ingesting Carboxyatractyloside. Post-mortem histopathology of the liver confirmed centrilobular hepatic necrosis and renal proximal tubular necrosis, secondary changes owing to increased permeability and microvascular haemorrhage in the cerebrum and cerebellum, and leucocytic infiltrates in the muscles and various organs including pancreas, lungs and myocardium.
    CONCLUSIONS:
    Carboxyatractyloside poisoning causes multiple organ dysfunction and can be fatal. Coagulation abnormalities, hyponatraemia, marked hypoglycaemia, icterus and hepatic and renal failure are signs of a poor prognosis. No antidote is available and supportive therapy is the mainstay of treatment.
    Carboxyatractyloside Description
    Source: The roots of Atractylodes lancea (Thunb.) DC.
    Solvent: DMSO, Pyridine, Methanol, Ethanol, etc.
    Storage: 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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    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 1.1298 mL 5.6491 mL 11.2982 mL 22.5963 mL 28.2454 mL
    5 mM 0.226 mL 1.1298 mL 2.2596 mL 4.5193 mL 5.6491 mL
    10 mM 0.113 mL 0.5649 mL 1.1298 mL 2.2596 mL 2.8245 mL
    50 mM 0.0226 mL 0.113 mL 0.226 mL 0.4519 mL 0.5649 mL
    100 mM 0.0113 mL 0.0565 mL 0.113 mL 0.226 mL 0.2825 mL
    * Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.