| GSD | genetically significant dose; Gerstmann-Straussler disease; glutathione synthetase deficiency; glyco... |
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| IAS | immunosuppressive acidic substance; infant apnea syndrome; insulin autoimmune syndrome; interatrial ... |
| ID | identification; iditol dehydrogenase; immunodeficiency; immunodiffusion; immunoglobulin deficiency; ... |
| IDA | idamycin; image display and analysis; iminodiacetic acid; insulin-degrading activity; iron deficienc... |
| IDS | iduronate sulfatase; immune deficiency state; inhibitor of DNA synthesis; integrated delivery system... |
| 17-hydroxylase deficiency syndrome | <syndrome> Congenital deficiency of adrenocortical, and possibly ovarian, steroid C-17a hydroxylase; the resulting excessive secretion of corticosterone and deoxycorticosterone produces hypertension and hypokalaemic alkalosis; absence of aldosterone secretion in such patients may indicate a multiple enzymic deficiency. (05 Mar 2000) |
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| lactase deficiency | An intolerance to milk and dairy products due to a deficiency of lactase in the intestine. Lactase is a enzyme which breaks down milk sugar or lactose. This condition is common in adults and may affect as many as 70-90% of Asians, African Americans, Native Americans and Mediterranean populations. This condition may also develop as the result of an intestinal disease such as celiac sprue. Symptoms include abdominal cramps, bloating, nausea, weight loss and diarrhoea. Treatment involves removing milk products from the diet. For infant's see Lactofree or ProSobee. (27 Sep 1997) |
| folic acid deficiency | A nutritional condition produced by a deficiency of folic acid in the diet. Many plant and animal tissues contain folic acid, abundant in green leafy vegetables, yeast, liver, and mushrooms but destroyed by long-term cooking. Alcohol interferes with its intermediate metabolism and absorption. Folic acid deficiency may develop in long-term anticonvulsant therapy or with use of oral contraceptives. This deficiency causes anaemia, macrocytic anaemia, and megaloblastic anaemia. It is indistinguishable from vitamin b 12 deficiency in peripheral blood and bone marrow findings, but the neurologic lesions seen in b 12 deficiency do not occur. (merck manual, 16th ed) (12 Dec 1998) |
| folic acid deficiency anaemia | Anaemia due to deficiency of folic acid, characterised by large-sized red blood cells (macrocytosis) and presence of large nuclei in erythroid precursor cells (megaloblasts) in the bone marrow. (05 Mar 2000) |
| LCAT deficiency | A rare condition characterised by corneal opacities, haemolytic anaemia, proteinuria, renal insufficiency, and premature atherosclerosis, and very low levels of lecithin cholesterol acyltransferase (LCAT) activity; results in accumulation of unesterfied cholesterol in plasma and tissues. (05 Mar 2000) |
| lecithin acyltransferase deficiency | A disease characterised by deficiency or low levels of plasma lecithin cholesterol acyl transferase. Clinical manifestations include corneal opacity, anaemia, and proteinuria. (12 Dec 1998) |
| fructose-1,6-diphosphatase deficiency | An autosomal recessive fructose metabolism disorder due to absent or deficient fructose-1,6-diphosphatase activity. Gluconeogenesis is impaired, resulting in accumulation of gluconeogenic precursors (e.g., amino acids, lactate, ketones) and manifested as hypoglycaemia, ketosis, and lactic acidosis. Episodes in the newborn infant are often lethal. Later episodes are often brought on by fasting and febrile infections. As patients age through early childhood, tolerance to fasting improves and development becomes normal. (12 Dec 1998) |
| leukocyte adhesion deficiency | An inherited disorder (autosomal recessive) in which there is a defective CD18 adherence complex that disturbs leukocyte chemotaxis. It is characterised by recurrent bacterial infections and impaired wound healing. (05 Mar 2000) |
| leukocyte-adhesion deficiency syndrome | <syndrome> Rare, autosomal recessive disorder caused by deficiency of the beta 2 integrin receptors (receptors, leukocyte-adhesion) comprising the CD11/CD18 family of glycoproteins. The syndrome is characterised by abnormal adhesion-dependent functions, especially defective tissue emigration of neutrophils, leading to recurrent infection. (12 Dec 1998) |
| lipoprotein lipase deficiency, familial | A rare familial condition characterised by massive chylomicronaemia and decreased levels of other lipoproteins. It is due to deficiency of lipoprotein lipase, an alkaline triglyceride hydrolase which catalyses an important step in the extrahepatic removal of triglyceride-rich lipoproteins from the blood. (12 Dec 1998) |
| luteal phase deficiency | Inadequate function of the corpus luteum that may prevent a fertilized egg from implanting in the uterus or may lead to early pregnancy loss. (09 Oct 1997) |