| haematoporphyrin | <protein> A type of artificial porphyrin which forms when sulphuric acid is added to haemoglobin in vitro. It has the chemical formula of C34H38N4O6 and is not found naturally. (09 Oct 1997) |
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| haematoporphyrin derivative | <chemical> A complex mixture of monomeric and aggregated porphyrins used in the photodynamic therapy of tumours (haematoporphyrin photoradiation). A purified component of this mixture is known as dihematoporphyrin ether. Pharmacological action: antineoplastic agent, photosensitizing agents. Chemical name: Haematoporphyrin D (12 Dec 1998) |
| haematoporphyrin photoradiation | Photochemotherapy using visible light, usually red, topically or delivered locally by fibreoptic probe to tissues sensitised with haematoporphyrins. (12 Dec 1998) |
| haematoporphyrinaemia | Older term used to designate the occurrence of haematoporphyrin in the circulating blood. (05 Mar 2000) |
| haematoporphyrins | Iron-free derivatives of haem with 4 methyl groups, 2 hydroxyethyl groups and 2 propionic acid groups attached to the pyrrole rings. (12 Dec 1998) |
| haematoporphyrinuria | Older term used to designate enhanced urinary excretion of porphyrins. (05 Mar 2000) |