urocanic acid


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ur·o·can·ic ac·id

(yūr'ō-kan'ik as'id),
4-Imidazoleacrylic acid; an acid derived from the oxidative deamination of l-histidine; present in sweat and in dog's urine; elevated levels are observed in cases of urocanate hydratase deficiency. The cis form, resulting from exposure to UV radiation, activates suppressor T cells.

u·ro·can·ic ac·id

(yūr'ō-kan'ik as'id)
Derived from the oxidative deamination of l-histidine; present in sweat; elevated levels are observed in cases of urocanate hydratase deficiency.
References in periodicals archive ?
Norval, "Recent advances in urocanic acid photochemistry, photobiology and photoimmunology," Photochemical & Photobiological Sciences, vol.
Urocanic acid and formiminoglutamic acid excretion studies in a case with megaloblastic arrest.
If urocanic acid is also been used by certain other worms, it can be a cost-effective preventive therapy in hosts of the developing countries.
Thirteen of the 20 treatments applied to soil (succinic acid, [alpha]-ketoglutaric acid, mannitol, urocanic acid, L-asparagine, riboflavin, sucrose, uric acid, cellulose, root exudates, L-serine, [alpha]-ketobutyric acid, humic acid) resulted in significantly lower (P [less than or equal to] 0.05) MB-C than the control treatments (Fig.
Treatments used to evaluate the microbial response to a range of organic C compounds (solutions prepared to provide 30 [micro]g C/g soil at a C: N:P ratio of 10:1:1) Group Organic C compound Amino acid L-Asparagine, L-arginine, glycine, L-serine Alcohol Mannitol Carbohydrate D-Glucose, sucrose Carboxylic Citric acid a-ketobutyric acid, [alpha]-ketoglutaric acid acid, succininc acid, uric acid Vitamin Thiamin, riboflavin Aromatic Urocanic acid Amine L-Glutamine Other Cellulose, fulvic acid humic acid synthetic root exudates (50 mM fructose, 50 mM D-glucose, 50 mM sucrose, 25 mM succinic acid, 25 mM DL-malic acid, 12.5 mM arginine, 12.5 mM serine, 12.5 mM cysteine) Table 3.
Hanson, working with Simon at UCSD, looked at urocanic acid, a compound found in the outermost layer of skin.
The text begins with a few pages on Acacia then runs on through Benzalkonium chloride, Canthaxanthine, D and C Red No.22, Ethanol, FD and C Blue No.1, Geraniol, Imidazolidinyl urea, Kathon CG, Lactose, Mineral oil, Oleic acid, Parabens, Quaternium-15, Rosin, Saccharin and Talc down to Urocanic acid. In all, more than seventyfive compounds have space devoted to them in this text.
4:30 pm: New nature-inspired urocanic acid mimic preventing DNA damages and immunosuppressive signaling induced by ultraviolet-B radiations--Jean-Francois Nicolay, Exsymol SAM
The substrates used here were 2 amines (D-glucosamine, L-glutamine), 6 amino acids (L-arginine, L-asparagine, L-glutamic acid, L-histidine, L-lysine, L-serine), 2 carbohydrates (D-glucose, D-mannose), and 15 carboxylic acids (L-ascorbic acid, citric acid, fumaric acid, gluconic acid, [Alpha]-ketobutyric acid, [Alpha]-ketoglutaric acid, [Alpha]-ketovaleric acid, DL-malic acid, malonic acid, pantothenic acid, quinic acid, succinic acid, tartaric acid, uric acid, and urocanic acid), [Alpha]-DL-hydroxybutyric acid was excluded from the list of 25 substrates defined by Degens (1998b) because of the unavailability of the compound and poor response in previous work (Degens 1998a, 1998b, 1999).
According to the company, Gamma-PGA is an effective hydrophilic humectant capable of increasing the production of NMFs including pyrrolidonecarboxylic acid (PCA), lactic acid and urocanic acid as compared to hyaluronic acid and soluble collagen.
that come from plants including urocanic acid (a carcinogen but it is natural!) and ferulic acid.