xanthine


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xan·thine

 (zăn′thēn′, -thĭn)
n.
1. A yellowish-white, crystalline purine base, C5H4N4O2, that is a precursor of uric acid and is found in blood, urine, muscle tissue, and certain plants.
2. Any of several derivatives of this compound.

xanthine

(ˈzænθiːn; -θaɪn)
n
1. (Elements & Compounds) a crystalline compound related in structure to uric acid and found in urine, blood, certain plants, and certain animal tissues. Formula: C5H4N4O2
2. (Elements & Compounds) any substituted derivative of xanthine, esp one of the three pharmacologically active methylated xanthines, caffeine, theophylline, or theobromine, which act as stimulants and diuretics

xan•thine

(ˈzæn θin, -θɪn)

n.
1. a crystalline, nitrogenous compound, C5H4N4O2, related to uric acid, occurring in urine, blood, and certain animal and vegetable tissues.
2. any derivative of this compound.
[1855–60; < French; see xantho-, -ine2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.xanthine - crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine
organic compound - any compound of carbon and another element or a radical
Translations
xantin
Xanthin
xanthine

xan·thine

n. xantina, grupo de substancias tales como la cafeína estimulantes del sistema nervioso central y del corazón.
References in periodicals archive ?
In patients in whom allopurinol toxicity occurs, options include other xanthine oxidase inhibitors (febuxostat), a uricosuric agent (probenecid), or allopurinol desensitisation (only in cases of mild rash).
Xanthine oxidase (EC 1.2.3.2) activity was measured spectrophotometrically by the formation of uric acid from xanthine through the increase in absorbance at 293 nm (18).
Anti-radical activity was determined spectrophotometrically (Robak & Gryglewski, 1988) by monitoring the effect of CCRE on superoxide anion radicals (which are able to reduce cytochrome c) produced by xanthine/ xanthine oxidase (XO) system.
Treating it like its very own substrate xanthine, the
The xanthine group has a number of general physiological effects in humans, including central nervous system stimulation, Cardiac muscle stimulation, diuresis, bronchial, uterine, and vascular smooth muscle relaxation, peripheral and coronary vasodilation, and cerebral vasoconstriction.
Xanthine oxidase inhibitors may improve myocardial work efficiency by sensitising cardiac muscle cells to calcium ions, which are a key determinant of cardiac muscle function.
Xanthine oxidase is an enzyme associated with the fat globule membrane in cow's milk.
Chemically, each table contains the active ingredient, Pentoxy-fylline De-Methyl - Xanthine, which is first cousin to caffeine, which is chemically Tri-Methyl Xanthine.
Febuxostat (FB) is a xanthine oxidase inhibitor that has been used to treat chronic gout.