| blood porphyrin level | A test which is used to measure red blood cell porphyrin levels. Porphyrins are pigments found in both animal and plant life. This test is useful in evaluating any number of porphyrin disorders (involving the various porphyrins) of red blood cells. Increased levels of coproporphyrins can indicate congenital erythropoietic porphyria or sideroblastic anaemia. Increased protoporphyrins may be seen in infection, thalassaemia, sideroblastic anaemia, iron deficient anaemia, increased erythropoiesis and lead poisoning. Increased uroporphyrins may indicate congenital erythropoietic porphyria or erythropoietic protoporphyria. (27 Sep 1997) |
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| porphyrin | <protein> Porphyrins are pigments found in both animal and plant life. They are all chelates with metals (Fe, Mg, Co, Zn, Cu, Ni) and constituents of haemoglobin, chlorophyll, cytochromes. Increased levels of coproporphyrins can indicate congenital erythropoietic porphyria or sideroblastic anaemia. Increased protoporphyrins may be seen in infection, thalassaemia, sideroblastic anaemia, iron deficient anaemia, increased erythropoiesis and lead poisoning. Increased uroporphyrins may indicate congenital erythropoietic porphyria or erythropoietic protoporphyria. (27 Sep 1997) |
| porphyrin cytochrome c peroxidase | <enzyme> From yeast; haem group of cytochrome c peroxidase (EC 1.11.1.5) replaced by protoporphyrin ix Registry number: EC 1.11.1.- Synonym: pcc-peroxidase (26 Jun 1999) |
| adventitial neuritis | Inflammation of the sheath of a nerve. See: perineuritis. (05 Mar 2000) |
| ascending neuritis | Inflammation progressing upward along a nerve trunk in a direction away from the periphery. (05 Mar 2000) |
| axial neuritis | Inflammation of the nervous substance proper, the axons, and myelin. Synonym: axial neuritis, central neuritis. (05 Mar 2000) |
| brachial neuritis | neuralgic amyotrophy |
| parenchymatous neuritis | Inflammation of the nervous substance proper, the axons, and myelin. Synonym: axial neuritis, central neuritis. (05 Mar 2000) |
| central neuritis | Inflammation of the nervous substance proper, the axons, and myelin. Synonym: axial neuritis, central neuritis. (05 Mar 2000) |
| retrobulbar neuritis | Optic neuritis without swelling of the optic disk. (05 Mar 2000) |
| multiple neuritis | <neurology> A disease process involving a number of peripheral nerves. Origin: Gr. Pathos = disease (14 Oct 1997) |
| sciatic neuritis | A syndrome characterised by pain radiating from the back into the buttock and into the lower extremity along its posterior or lateral aspect and most commonly caused by prolapse of the intervertebral disk, the term is also used to refer to pain anywhere along the course of the sciatic nerve. (18 Nov 1997) |
| segmental neuritis | Inflammation occurring at several points along the course of a nerve, segmental demyelinating neuropathy (05 Mar 2000) |
| neuritis | <clinical sign> Inflammation of a nerve, a condition attended by pain and tenderness over the nerves, anaesthesia and paraesthesias, paralysis, wasting and disappearance of the reflexes. In practice, the term is also used to denote noninflammatory lesions of the peripheral nervous system. If the involvement is in one nerve it is called mononeuritis, in several nerves, mononeuritis multiplex, if diffuse and bilateral, polyneuritis. See: neuropathy. (16 Dec 1997) |
| neuritis, experimental allergic | An autoimmune demyelinating disorder of peripheral nerves produced by injection of peripheral nerve tissue protein. (12 Dec 1998) |