allantoin


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allantoin

 [ah-lan´to-in]
a crystalline substance from allantoic fluid and fetal urine, also produced synthetically; used as an astringent and keratolytic, often as a component in multi-ingredient dermatological medications.

al·lan·to·in

(ă-lan'tō-in),
A substance present in allantoic fluid, fetal urine, and elsewhere; also an oxidation product of uric acid and the end product of purine metabolism in animals other than humans and the other primates.

allantoin

/al·lan·to·in/ (ah-lan´to-in) a crystalline substance found in allantoic fluid, fetal urine, many plants, and produced synthetically; used topically as an astringent and keratolytic.

allantoin

(ə-lăn′tō-ĭn)
n.
An oxidation product of uric acid, C4H6N4O3, found in the urine of most mammals (except humans and related primates) as the metabolic end product of purine oxidation, and also found in some plants. It is also produced synthetically and is often used in cosmetics and pharmaceuticals.

allantoin

[əlan′tō·in]
a chemical compound (5-ureidohydantoin), C4H6N4O3, that occurs as a white crystallizable substance found in many plants and in the allantoic and amniotic fluids and fetal urine of primates. It is also present in the urine of mammals other than primates as a product of purine metabolism. The substance, which can be produced synthetically by the oxidation of uric acid, was once used to promote tissue growth in the treatment of suppurating wounds and ulcers.

allantoin

A drug used externally in the treatment of ACNE, usually in combination with other drugs.

allantoin

the heterocyclic end product of purine catabolism in some reptiles, and mammals other than primates.

allantoin

a crystalline substance, the product of purine metabolism and present in urine of most mammals except primates and Dalmation dogs, and in plants. At one time used topically to promote wound healing.
References in periodicals archive ?
Measurement of allantoin in urine and plasma by high-performance liquid chromatography with pre-column derivatization.
01% fluocinolone acetonide with 2% kojic acid + octinoxate + allantoin in treatment of melasma.
At the meeting, she discussed the phase lib study, which compared allantoin 6%, allantoin 3%, and a vehicle cream, in 48 patients aged 6 months to 44 years old.
036 N sulfuric acid to prevent decomposition of metabolites, and immediately frozen for analysis of creatinine, total nitrogen, uric acid and allantoin.
Key words: Allantoin, Digestible dry matter intake, Digestible energy intake, Red deer, Winter nutrition
Among the changes they identified were alterations in molecules connected to blood vessel constriction and cellular respiration, as well as increases in levels of a molecule called niacinamide that enhances insulin release and helps control blood sugar, and decreases in levels of allantoin, a molecule that helps promote oxidative stress.
In addition, levels of allantoin, an indicator of oxidative stress, fell after vigorous exercise, and niacinamide, which enhances insulin release and improves glycemic control, increased by 79 percent.
Pond's Flawless White with its patented formula featuring Vitamin E, Allantoin and Optics powered Niacinamide (B3) Complex, allows users to experience flawlessly radiant skin by lightening dark spots and reducing blemishes in just 7 days.
All strains were allantoin negative except ST 67 and ST 69.
Pegloticase--a recombinant formulation of porcine uricase, an enzyme not produced by humans--lowers serum uric acid by metabolizing urate into soluble allantoin that is excreted by the kidneys.