Sodium cholate
Sodium cholate (Cholic acid) exhibits a strong spermicidal and antiviral [anti-human immunodeficiency virus (HIV)-1] activity.
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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.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
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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Hum. Reprod.,1993 Jun;8(6):866-9.
Spermicidal and antiviral properties of cholic acid: contraceptive efficacy of a new vaginal sponge (Protectaid) containing sodium cholate.[Pubmed:
7688380]
METHODS AND RESULTS:
Cholic acid (Sodium cholate) exhibits a strong spermicidal and antiviral [anti-human immunodeficiency virus (HIV)-1] activity. The same effects are observed for F-5 Gel, the active mixture of a new contraceptive sponge (Protectaid), which contains Sodium cholate together with low concentrations (0.5%) of nonoxynol-9 and benzalkonium chloride. Both cholic acid and the F-5 Gel exerted a dose-dependent, in-vitro inhibitory effect 1) on the activity of HIV-1 associated reverse transcriptase in an acellular system (their 50% inhibitory dose was 7.2 mM and 0.8 x 10 -3 v/v, respectively, and 2) on the potential of HIV-1 to infect human lymphocytes efficiently. In the 3 semen samples examined, sperm motility was instantaneously inhibited by the addition of a 6 mM solution of Sodium cholate or of a 1:10 dilution of F-5 Gel. Both cholic acid and F-5 Gel affected in a dose-dependent manner the viability of normal peripheral blood lymphocytes (NPBL) and CEM cells. The Protectaid contraceptive sponge impregnated with F-5 Gel was given to 20 young women aged 19-25 years for a period of 1 year who had chosen this method for both contraception and against sexually transmitted diseases. All women were instructed to insert the sponge within the 12 hours preceding each sexual intercourse and to remove it 4-6 hours afterwards. During 12 months of use with at least 3 intercourse per week, the contraceptive efficacy of the Protectaid vaginal sponge was 100%. Cervical cultures at 6-month intervals showed the presence of Mycoplasma hominis and Candida albicans in 1 and 2 cases, respectively.
CONCLUSIONS:
The combined spermicidal and anti-HIV properties of cholic acid reported and used in the Protectaid sponge offer a new and modern protective method of contraception. At the end of the study, cervical cultures revealed the presence of Escherichia coli and Candida albicans in 1 case each. No slide effects were recorded, and only 1 woman complained of discomfort.
Diamond & Related Materials, 2007, 16(1):12-15.
Electrochemical behavior of sodium cholate and deoxycholate on an electrode modified with multi-walled carbon nanotubes (MWNTs) linked up with cyclodextrin[Reference:
WebLink]
METHODS AND RESULTS:
The electrochemical behavior of Sodium cholate (CA) and deoxycholate (DCA) was investigated on ITO electrodes coated with β-cyclodextrin (β-CD) modified multi-walled carbon nanotubes (MWNTs) in aqueous solution. β-CD modified MWNTs (MWNT–CDs) showed electrocatalytic effect on the reduction of CA, while electrochemical response of DCA was not observed. To further understand the mechanism of the electrochemical process, the electrochemical behavior of CA and DCA on bare ITO electrode and the electrode modified with MWNTs possessing carboxyl groups (MWNT–COOHs) was also discussed.
CONCLUSIONS:
The results indicate that the electrochemical response of CA can be improved through the use of carbon nanotubes. The introduction of cyclodextrin moieties enhances the selectivity of the electrodes to CA and DCA.
