| iron isotopes | Stable iron atoms that have the same atomic number as the element iron, but differ in atomic weight. Fe-54, 57, and 58 are stable iron isotopes. (12 Dec 1998) |
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| iron lung | A mechanical respirator in which the body except the head is encased within a metal tank, which is sealed at the neck with an airtight gasket; artificial respiration is induced by making the air pressure inside negative. Synonym: iron lung, tank respirator. (05 Mar 2000) |
| iron metabolism disorders | Disorders in the processing of iron in the body: its absorption, transport, storage, and utilization. (12 Dec 1998) |
| iron overload | An excessive accumulation of iron in the body due to a greater than normal absorption of iron from the gastrointestinal tract or from parenteral injection. This may arise from idiopathic haemochromatosis, excessive iron intake, chronic alcoholism, certain types of refractory anaemia, or transfusional haemosiderosis. (12 Dec 1998) |
| iron poisoning | Iron supplements meant for adults (such as pregnant women) are a major cause of poisoning in children. Care should be taken to keep iron supplements safely away from children. (12 Dec 1998) |
| iron protoporphyrin | A protoporphyrin to which an iron atom is complexed; e.g., haem. (05 Mar 2000) |
| iron pyrites | Native sulfide of iron. (05 Mar 2000) |
| iron radioisotopes | Unstable isotopes of iron that decay or disintegrate emitting radiation. Fe atoms with atomic weights 52, 53, 55, and 59-61 are radioactive iron isotopes. (12 Dec 1998) |
| iron sorbitex | A complex of iron, sorbitol, and citric acid in stable solution for intramuscular administration in the treatment of iron deficiency anaemia in patients who are unable to take sufficient amounts of iron by the oral route. Synonym: iron sorbitol. (05 Mar 2000) |
| iron sorbitol | A complex of iron, sorbitol, and citric acid in stable solution for intramuscular administration in the treatment of iron deficiency anaemia in patients who are unable to take sufficient amounts of iron by the oral route. Synonym: iron sorbitol. (05 Mar 2000) |
| iron-storage disease | The storage of excess iron in the parenchyma of many organs, as in idiopathic haemochromatosis or transfusion haemosiderosis. (05 Mar 2000) |
| iron sulfate | A soluble iron salt frequently used as an iron supplement in tablets and liquid preparations. Synonym: ferrous sulfate. (05 Mar 2000) |
| iron-sulfur proteins | A group of proteins possessing only the iron-sulfur complex as the prosthetic group. These proteins participate in all major pathways of electron transport: photosynthesis, respiration, hydroxylation and bacterial hydrogen and nitrogen fixation. (12 Dec 1998) |
| total iron binding capacity | <biochemistry, haematology> A test that measures indirectly the transferrin level in the bloodstream. Transferrin is a protein that carries iron in the body. Normal values are 240 to 450 mcg/dl. This test is used to evaluate anaemia. Greater than normal total iron binding capacity can be seen in: iron deficiency anaemia, late pregnancy and polycythaemia vera. Lower than normal total iron binding capacity can be seen in cirrhosis, sickle cell anaemia, hypoproteinaemia, pernicious anaemia and haemolytic anaemia. The use of birth control pills can lead to increased total iron binding capacity measurements. Acronym: TIBC (12 Jan 1998) |
| ferric citrate iron reductase | <enzyme> Requires fmn, uses NADH; fre1 and fre2 provide membrane-associated ferric reductase activity for saccharomyces cerevisiae Registry number: EC 1.6.99.- Synonym: ferric iron reductase, iron reductase, ferric reductase, NADH-dependent, ferrireductase, iron (iii) reductase, ferric reductase, fre1 gene product, fre2 gene product, ferric-chelate reductase, NADH-dependent ferric-chelate reductase, NADH-dependent iron(iii)-chelate reductase, fecitr, NADH-fe(iii)-chelate reductase, nfr enzyme (26 Jun 1999) |