Dictionary

deficiency, adenosine deaminase See adenosine deaminase deficiency.

deficiency, alpha-1 antitrypsin See alpha-1 antitrypsin deficiency.

deficiency, ankyrin See spherocytosis, hereditary.

deficiency, calcium See calcium deficiency.

deficiency, ceruloplasmin See ceruloplasmin deficiency.

deficiency, G6PD Deficiency of the enzyme glucose-6-phosphate dehydrogenase (G6PD), the most common enzyme defect of medical importance. The frequency of G6PD deficiency is increased in blacks and people of Mediterranean origin (including Italians, Greeks, Arabs, and Jews). Persons with this enzyme deficiency can develop anemia due to the breakup of their red blood cells when…

deficiency, glucocerebrosidase See Gaucher disease.

deficiency, glucose-6-phosphate dehydrogenase See deficiency, G6PD.

deficiency, hex-A See Tay-Sachs disease.

deficiency, iron An inadequate amount of iron, the most common known form of nutritional disorder in the world. Iron is necessary to make hemoglobin, the molecule in red blood cells that transports oxygen. Iron deficiency results in anemia. The prevalence of iron deficiency is highest among young children and women of childbearing age (particularly pregnant…

deficiency, lactase Lack of the enzyme lactase in the small intestine. Lactase is needed to digest lactose, a sugar found in milk and most other dairy products and also used as an ingredient in other foods. Although most people are born with the ability to make adequate amounts of lactase, the production of lactase normally…

deficiency, LCHAD Deficiency of the enzyme long-chain-3-hydroxyacyl-CoA dehydrogenease (LCHAD), an abnormality of fatty acid metabolism. Acute fatty liver of pregnancy (AFLP) has been found to be associated in some cases with LCHAD deficiency. In such cases, both parents have LCHAD activity at half of normal levels, but the fetus has none. The metabolic disease in…