Xanthinuria Type I (Xanthine Dehydrogenase Deficiency) is a condition caused by an autosomal recessive mutation. The condition was discovered (though not diagnosed) in 1817, when stones formed of almost pure xanthine were first identified by Marcet. The symptoms arise because of a malfunction in the production of xanthine oxidase. It is a rare . It is characterized by a loss of oxidase such as in serum and the uric acid found in the urine. This enzyme deficiency causes the accumulation of xanthine in the plasma, hypoxanthine in the serum, and xanthine in the urine. They will be found in the latter and former in increased quantities. Although the condition can cause a wide range of symptoms including renal xanthine stones, what occurs most of the time is that xanthinuria is asymptomatic and diagnosis is product of chance. The disorder has symptoms including arthralgia, hematuria, mental retardation, stomatisis, and urolithiasis.
Xanthinuria Type I is a condition caused by an autosomal recessive mutation. The condition was discovered (though not diagnosed) in 1817, when stones formed of almost pure xanthine were first identified by Marcet. The symptoms arise because of a malfunction in the production of xanthine oxidase. It is a rare . It is characterized by a loss of oxidase such as in serum and the uric acid found in peepee. As a result, the opposite is true for the presence of xanthine and hypoxanthine. They will be found in the latter and former in increased quantities. Although the condition can cause a wide range of symptoms including renal xanthine stones, what occurs most of the time is that xanthinuria is asymptomatic and diagnosis is product of chance.
The rare genetic disorder, Xanthinuria (also referred to as xanthine oxidase deficiency) results from a deficiency of the enzyme xanthine oxidase. This enzyme deficiency causes the accumulation of: xanthine in the plasma, uric acid in serum or hypoxanthine, uric acid and xanthine in the urine. The disorder has symptoms including arthralgia, hematuria, mental retardation, stomatisis, and urolithiasis.
In Wolman's disease excessive amounts of cholesterol ester in the liver are present mainly in the macrophages of the reticuloendo- thelial system. The livler in Wiolman's disease contains triglyceride at 10 to 20 times the normal concentratlon, most of whilch is present in hepatocytes. The first case of Wolman's disease was published in 1956 by M. Wolman, M.D., reporting a case of a 2 month old girl who had been admitted to the Hadassah University Hospital. Lysosomal acid lipase/acid cholesteryl ester hydrolase (LAL/ACEH) plays an important role in cellular processing of plasma lipoproteins and thus contributes to both the homeostatic control of plasma lipoprotein levels and the prevention of cellular lipid overload. Wolman's Disease results from severely reduced levels of the enzyme lysosomal acid lipase/acid cholesteryl ester hydrolase.
