Valerenic acid

Valerenic acid
Product Name Valerenic acid
CAS No.: 3569-10-6
Catalog No.: CFN70254
Molecular Formula: C15H22O2
Molecular Weight: 234.3 g/mol
Purity: >=98%
Type of Compound: Sesquiterpenoids
Physical Desc.: Powder
Targets: GABAA receptor
Source: The herbs of Valeriana officinalis L.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Price:
Valerenic acid, a subunit specific allosteric modulator of GABAA receptors, has anxiolytic, and antioxidant activities.
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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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    Neuropharmacology, 2007, 53(1):178-187.
    Valerenic acid potentiates and inhibits GABAA receptors: Molecular mechanism and subunit specificity.[Reference: WebLink]
    Valerian is a commonly used herbal medicinal product for the treatment of anxiety and insomnia.
    METHODS AND RESULTS:
    Here we report the stimulation of chloride currents through GABAA receptors (IGABA) by Valerenic acid (VA), a constituent of Valerian. To analyse the molecular basis of VA action, we expressed GABAA receptors with 13 different subunit compositions in Xenopus oocytes and measured IGABA using the two-microelectrode voltage-clamp technique. We report a subtype-dependent stimulation of IGABA by VA. Only channels incorporating β2 or β3 subunits were stimulated by VA. Replacing β2/3 by β1 drastically reduced the sensitivity of the resulting GABAA channels. The stimulatory effect of VA on α1β2 receptors was substantially reduced by the point mutation β2N265S (known to inhibit loreclezole action). Mutating the corresponding residue of β1 (β1S290N) induced VA sensitivity in α1β1S290N comparable to α1β2 receptors. Modulation of IGABA was not significantly dependent on incorporation of α1, α2, α3 or α5 subunits. VA displayed a significantly lower efficiency on channels incorporating α4 subunits. IGABA modulation by VA was not γ subunit dependent and not inhibited by flumazenil (1 μM). VA shifted the GABA concentration–effect curve towards lower GABA concentrations and elicited substantial currents through GABAA channels at ≥30 μM. At higher concentrations (≥100 μM), VA and acetoxy-VA inhibit IGABA. A possible open channel block mechanism is discussed.
    CONCLUSIONS:
    In summary, VA was identified as a subunit specific allosteric modulator of GABAA receptors that is likely to interact with the loreclezole binding pocket.
    Neuropharmacology, 2007, 53(1):178-187.
    Valerenic acid potentiates and inhibits GABAA receptors: Molecular mechanism and subunit specificity.[Reference: WebLink]
    Valeriana jatamansi Jones, commonly known as Indian Valerian or Tagar (Family: Valerinaceae) is used in both traditional and modern systems of medicine. The plants of this species are known for their high content of Valerenic acid, the main active constituent of valerian, and high antioxidant activity, and these characteristics have increased the demand for these plants by the pharmaceutical industry. At present, the demand for planting material is largely met from the harvesting of wild plants, which vary in quality and quantity of the active ingredient.
    METHODS AND RESULTS:
    Therefore, there is a need to identify individual plants/populations with a higher content of the active ingredients and higher antioxidant activity. We used inter-simple sequence repeats (ISSR) markers in 151 genotypes of 25 V. jatamansi populations to identify markers associated with Valerenic acid and antioxidant activity. Of the 130 ISSR primers tested, 20 generated 159 bands, with an average of 7.95 bands per primer. Valerenic acid content was significantly (p < 0.05) higher in the Katarmal (aerial portion 0.57 ± 0.04 %) and Joshimath populations (root portion 1.80 ± 0.12 %). Antioxidant activity using these different in vitro assays varied among the populations and plant portions, with maximum antioxidant activity found in the aerial plant portion (8.63 ± 0.06 mM) and roots [8.36 ± 0.0 mM ascorbic acid equivalents (AAE)/100 g dry weight (dw)] of the Didihat and Katarmal populations, respectively, using the ABTS [2, 2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic)] assay. The DPPH (2, 2-diphenyl-1-picryylhydrazyl free radical scavenging) assay revealed maximum antioxidant activity in the aerial plant portion (15.23 ± 0.09 mM) and roots (17.53 ± 0.04 mM AAE/100 g dw) of the Didihat population. The FRAP (ferric-reducing antioxidant power) assay showed that the roots of plants of the Ukhimath population had significantly higher antioxidant activity (12.71 ± 0.04 mM AAE/100 g dw) than those of other populations of V. jatamansi.
    CONCLUSIONS:
    Based on the stepwise multiple regression analysis, seven positive and six negative markers showed significant association with Valerenic acid content. Antioxidant activity measured by the ABTS, DPPH and FRAP assays showed a positive correlation with 14, 13 and 10 markers, respectively (p < 0.001). These markers have the potential for application in breeding programmes in order to select lineages of V. jatamansi with higher biochemical attributes, especially when no other genetic information, such as linkage maps and quantitative trait loci is available.
    Neuropharmacology, 17 Jun 2008, 56(1):174-181.
    GABA A receptors as in vivo substrate for the anxiolytic action of valerenic acid, a major constituent of valerian root extracts.[Reference: WebLink]
    Valerian extracts have been used for centuries to alleviate restlessness and anxiety albeit with unknown mechanism of action in vivo.
    METHODS AND RESULTS:
    We now describe a specific binding site on GABA(A) receptors with nM affinity for Valerenic acid and valerenol, common constituents of valerian. Both agents enhanced the response to GABA at multiple types of recombinant GABA(A) receptors. A point mutation in the beta2 or beta3 subunit (N265M) of recombinant receptors strongly reduced the drug response. In vivo, Valerenic acid and valerenol exerted anxiolytic activity with high potencies in the elevated plus maze and the light/dark choice test in wild type mice. In beta3 (N265M) point-mutated mice the anxiolytic activity of Valerenic acid was absent.
    CONCLUSIONS:
    Thus, neurons expressing beta3 containing GABA(A) receptors are a major cellular substrate for the anxiolytic action of valerian extracts.
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