coproporphyrin

One of two porphyrin compounds found normally in feces as a decomposition product of bilirubin (hence, from hemoglobin); certain corproporphyrins are elevated in certain porphyrias. SEE ALSO: porphyrinogens.

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cop·ro·por·phy·rin .käp-rə-'pȯr-fə-rən n any of four isomeric porphyrins C36H38N4O8 of which types I and III are found in feces and urine esp. in certain pathological conditions and also in yeast

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n.
a porphyrin compound formed during the synthesis of protoporphyrin IX, a precursor of haem. Coproporphyrin is excreted in the faeces in hereditary coproporphyria.

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cop·ro·por·phy·rin (kop″ro-porґfə-rin) a porphyrin produced by oxidation of the methylene bridges in coproporphyrinogen. Four isomers are possible, but only two exist naturally. Coproporphyrin III is excreted in the feces and urine in hereditary coproporphyria and variegate porphyria, particularly during acute attacks. Coproporphyrin I is excreted in the feces and urine in congenital erythropoietic porphyria.

Medical dictionary. 2011.

Look at other dictionaries:

  • coproporphyrin — n. a porphyrin compound formed during the synthesis of protoporphyrin IX, a precursor of haem. Coproporphyrin is excreted in the faeces in hereditary coproporphyria …   The new mediacal dictionary

  • coproporphyrin — noun Any of several related porphyrin compounds found normally in feces as a decomposition product of bile pigments …   Wiktionary

  • coproporphyrin — cop·ro·porphyrin …   English syllables

  • coproporphyrin — |käprə+ noun ( s) Etymology: International Scientific Vocabulary copr + porphyrin : any of four isomeric porphyrins C20H6N4(CH3)4(CH2CH2COOH)4 of which types I and III are found in feces and urine especially in certain pathological conditions and …   Useful english dictionary

  • COPRO — coproporphyrin; coproporphyrinogen …   Medical dictionary

  • COPRO — • coproporphyrin; • coproporphyrinogen …   Dictionary of medical acronyms & abbreviations

  • Dubin-Johnson syndrome — Infobox Disease Name = PAGENAME Caption = Bilirubin DiseasesDB = 3982 ICD10 = ICD10|E|80|6|e|70 ICD9 = ICD9|277.4 ICDO = OMIM = 237500 MedlinePlus = eMedicineSubj = med eMedicineTopic = 588 MeshID = D007566 Dubin Johnson syndrome is an autosomal… …   Wikipedia

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  • porphyria variegata — variegate porphyria (VP) an autosomal dominant hepatic porphyria due to mutation in the PPOX gene (locus: 1q22), which encodes protoporphyrinogen oxidase, resulting in partial deficiency of enzyme activity. It is characterized by various… …   Medical dictionary

  • coproporphyrinuria — |käprə+ noun ( s) Etymology: New Latin, from International Scientific Vocabulary coproporphyrin + New Latin uria : excretion of coproporphyrin in the urine …   Useful english dictionary

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