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Lipoic acid
Lipoic acid
ChemFaces products have been cited in many studies from excellent and top scientific journals
Product Name Lipoic acid
Price: $30 / 20mg
CAS No.: 62-46-4
Catalog No.: CFN99192
Molecular Formula: C8H14O2S2
Molecular Weight: 206.3 g/mol
Purity: >=98%
Type of Compound: Miscellaneous
Physical Desc.: Yellow cryst.
Source: Kidney, heart, liver, spinach, broccoli, and yeast extract.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS    SDF    Manual
Similar structural: Comparison (Web)  (SDF)
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According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
Size /Price /Stock 10 mM * 1 mL in DMSO / $8.9 / In-stock
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Related Screening Libraries
Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
10 mM * 1 mL in DMSO / Inquiry / In-stock
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Biological Activity
Description: Alpha-lipoic acid has become a common ingredient in multivitamin formulas, anti-aging supplements, and even pet food, it is well-defined as a therapy for preventing diabetic polyneuropathies, and scavenges free radicals, chelates metals, and restores intracellular glutathione levels which otherwise decline with age. Alpha-lipoic acid has therapeutic effects on joint inflammation and erosion in an animal model via NF-kappa B down regulation, it inhibits TNF-alpha induced NF-kappa B activation through blocking of MEKK1-MKK4-IKK signaling cascades. Lipoic acid is a novel treatment for Alzheimer's disease and related dementias.
Targets: MMP(e.g.TIMP) | NF-kB | Nrf2 | MAPK | TNF-α | IkB | ROS | IKK
In vitro:
Pharmacol Ther. 2007 Jan;113(1):154-64.
Lipoic acid as a novel treatment for Alzheimer's disease and related dementias.[Pubmed: 16989905 ]
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that destroys patient memory and cognition, communication ability with the social environment and the ability to carry out daily activities. Despite extensive research into the pathogenesis of AD, a neuroprotective treatment - particularly for the early stages of disease - remains unavailable for clinical use.
METHODS AND RESULTS:
In this review, we advance the suggestion that Lipoic acid (LA) may fulfil this therapeutic need. A naturally occurring precursor of an essential cofactor for mitochondrial enzymes, including pyruvate dehydrogenase (PDH) and alpha-ketoglutarate dehydrogenase (KGDH), LA has been shown to have a variety of properties which can interfere with pathogenic principles of AD. For example, LA increases acetylcholine (ACh) production by activation of choline acetyltransferase and increases glucose uptake, thus supplying more acetyl-CoA for the production of ACh. LA chelates redox-active transition metals, thus inhibiting the formation of hydroxyl radicals and also scavenges reactive oxygen species (ROS), thereby increasing the levels of reduced glutathione. Via the same mechanisms, downregulation redox-sensitive inflammatory processes is also achieved.
In vivo:
Curr Top Med Chem. 2015;15(5):458-83.
Lipoic Acid: its antioxidant and anti-inflammatory role and clinical applications.[Pubmed: 25620240]
Lipoic acid (LA) is an antioxidant able to produce its effects in aqueous or lipophilic environments.
METHODS AND RESULTS:
Lipoate is the conjugate base of Lipoic acid, and the most prevalent form of LA under physiological conditions. It presents a highly negative reduction potential, increases the expression of antioxidant enzymes and participates in the recycling of vitamins C and E. Due to these properties, LA is called the "universal antioxidant". LA is also involved with anti-inflammatory action, independently of its antioxidant activity. This review was carried out, aiming to identify, analyze, and rationalize the various clinical, physiopathological and/or physiological situations in which LA, through oral supplementation, was tested on human and animal (rats and mice) models. LA was mainly tested in cardiovascular diseases (CVD), obesity, pain, inflammatory diseases and aging. LA uses in CVD and obesity, in humans, are controversial. On the other hand, beneficial effects on inflammation and pain were observed. LA supplementation in animal models may prolong life, has neuroprotective effects and presents positive effects against cancer. Differences observed in human and animal models can be due, in part, to different treatments (LA combined with other antioxidants, different doses) and to the variety of biomarkers investigated in animal experiments.
CONCLUSIONS:
These results suggest the need for further clinical trials to guide health professionals regarding the safety of prescription of this supplement.
Free Radic Biol Med. 1999 Aug;27(3-4):309-14.
Oral administration of RAC-alpha-lipoic acid modulates insulin sensitivity in patients with type-2 diabetes mellitus: a placebo-controlled pilot trial.[Pubmed: 10468203]
Alpha-Lipoic acid (ALA), a naturally occuring compound and a radical scavenger was shown to enhance glucose transport and utilization in different experimental and animal models.
METHODS AND RESULTS:
Clinical studies described an increase of insulin sensitivity after acute and short-term (10 d) parenteral administration of ALA. This revealed significantly different changes in MCR after treatment (+27% vs. placebo; p < .01). This placebo-controlled explorative study confirms previous observations of an increase of insulin sensitivity in type-2 diabetes after acute and chronic intravenous administration of ALA.
CONCLUSIONS:
The results suggest that oral administration of alpha-Lipoic acid can improve insulin sensitivity in patients with type-2 diabetes. The encouraging findings of this pilot trial need to be substantiated by further investigations.
Lipoic acid Description
Source: Kidney, heart, liver, spinach, broccoli, and yeast extract.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, 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.

Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

After receiving: 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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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

Cell. 2018 Jan 11;172(1-2):249-261.e12.
doi: 10.1016/j.cell.2017.12.019.
IF=36.216(2019)

PMID: 29328914

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Nature Plants. 2016 Dec 22;3: 16206.
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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 4.8473 mL 24.2365 mL 48.4731 mL 96.9462 mL 121.1827 mL
5 mM 0.9695 mL 4.8473 mL 9.6946 mL 19.3892 mL 24.2365 mL
10 mM 0.4847 mL 2.4237 mL 4.8473 mL 9.6946 mL 12.1183 mL
50 mM 0.0969 mL 0.4847 mL 0.9695 mL 1.9389 mL 2.4237 mL
100 mM 0.0485 mL 0.2424 mL 0.4847 mL 0.9695 mL 1.2118 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.
Protocol
Kinase Assay:
Biochim Biophys Acta. 2009 Oct;1790(10):1149-60.
Alpha-lipoic acid as a dietary supplement: molecular mechanisms and therapeutic potential.[Pubmed: 19664690 ]
Alpha-Lipoic acid (LA) has become a common ingredient in multivitamin formulas, anti-aging supplements, and even pet food. It is well-defined as a therapy for preventing diabetic polyneuropathies, and scavenges free radicals, chelates metals, and restores intracellular glutathione levels which otherwise decline with age. How do the biochemical properties of LA relate to its biological effects?
METHODS AND RESULTS:
Herein, we review the molecular mechanisms of LA discovered using cell and animal models, and the effects of LA on human subjects. Though LA has long been touted as an antioxidant, it has also been shown to improve glucose and ascorbate handling, increase eNOS activity, activate Phase II detoxification via the transcription factor Nrf2, and lower expression of MMP-9 and VCAM-1 through repression of NF-kappa B. LA and its reduced form, dihydroLipoic acid, may use their chemical properties as a redox couple to alter protein conformations by forming mixed disulfides. Beneficial effects are achieved with low micromolar levels of LA, suggesting that some of its therapeutic potential extends beyond the strict definition of an antioxidant.
CONCLUSIONS:
Current trials are investigating whether these beneficial properties of LA make it an appropriate treatment not just for diabetes, but also for the prevention of vascular disease, hypertension, and inflammation.
Int Immunopharmacol. 2008 Feb;8(2):362-70.
Alpha-lipoic acid inhibits TNF-alpha induced NF-kappa B activation through blocking of MEKK1-MKK4-IKK signaling cascades.[Pubmed: 18182252]
The therapeutic effects of alpha-Lipoic acid (alpha-LA) via NF-kappa B down regulation were demonstrated on joint inflammation and erosion in an animal model.
METHODS AND RESULTS:
In this study, we investigated how alpha-LA inhibits the pathway of NF-kappa B activation by TNF-alpha via the mitogen-activated protein kinase (MAPK) pathway in rheumatoid arthritis (RA) fibroblast-like synovial cells (FLS). FLS were stimulated with TNF-alpha following pre-treatment with or without alpha-LA. Electrophoretic mobility shift assays (EMSA) revealed that TNF-alpha activates NF-kappa B in FLS. This was inhibited by alpha-LA at concentrations of 1 mM. TNF-alpha induced IKK mediated phosphorylation of GST-I kappa B and pre-treatment with alpha-LA inhibited this pathway. FLS constitutively express MEKK1, MEKK2, MEKK3, and TAK1 and that their levels are unaffected by TNF-alpha or alpha-LA. Immunoprecipitation using anti-MEKK1 antibody phosphorylated GST-I kappa B and pre-treating the cells with alpha-LA could abolish the reaction. FLS were immunoprecipitated using an antibody to MEKK1, and MKK4 was coprecipitated with MEKK1. In addition, immune complexes precipitated with anti-MKK4 antibody phosphorylated GST-I kappa B, and pre-treatment with alpha-LA inhibited the phosphorylation. Immunoprecipitation assay showed that MEKK1, MKK4, IKK-alpha, IKK-beta, I kappa B, and NF-kappa B comprised immunocomplex.
CONCLUSIONS:
It can be concluded that TNF-alpha activates NF-kappa B in FLS through MEKK1-MKK4-IKK signaling complex, and alpha-LA inhibits this signaling at the level of or upstream of IKK-alpha and IKK-beta.
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