| 释义 |
methemoglobinenUK
met·he·mo·glo·bin M0253500 (mĕt-hē′mə-glō′bĭn)n. A brownish-red form of hemoglobin that occurs when hemoglobin is oxidized either during decomposition of the blood or by the action of various oxidizing drugs or toxic agents. It contains iron in the ferric state and cannot function as an oxygen carrier.
[met(a)- + hemoglobin.]methemoglobin (mɛtˌhiːməˈɡləʊbɪn) n (Biochemistry) the US spelling of methaemoglobinmet•he•mo•glo•bin (mɛtˈhi məˌgloʊ bɪn, -ˈhɛm ə-, -ˌhi məˈgloʊ-, -ˌhɛm ə-)
n. a form of hemoglobin in which iron has been oxidized, resulting in brownish blood that transports less oxygen. [1865–70] methemoglobinenUK
methemoglobin[met‚hē·mə′glō·bən] (biochemistry) ferrihemoglobin methemoglobinenUK
methemoglobin [met-he´mo-glo″bin] a hematogenous pigment formed from hemoglobin by oxidation of the iron atom from the ferrous to the ferric state. A small amount is found in the blood normally, but injury or toxic agents convert a larger proportion of hemoglobin into methemoglobin, which does not function as an oxygen carrier.met·he·mo·glo·bin (metHb), (met-hē'mō-glō'bin), A transformation product of oxyhemoglobin resulting from the oxidation of the normal Fe2+ to Fe3+, a process that converts heme to hematin; because methemoglobin contains water in firm union with ferric iron, it is chemically different from oxyhemoglobin; found in sanguineous effusions and in the circulating blood after poisoning with acetanilid or potassium chlorate, among other substances. Synonym(s): ferrihemoglobinmethemoglobin (mĕt-hē′mə-glō′bĭn)n. A brownish-red form of hemoglobin that occurs when hemoglobin is oxidized either during decomposition of the blood or by the action of various oxidizing drugs or toxic agents. It contains iron in the ferric state and cannot function as an oxygen carrier.met·he·mo·glo·bin (metHb) (met-hē'mŏglō'bin) A transformation product of oxyhemoglobin because of the oxidation of the normal Fe2+ to Fe3+, thus converting ferroprotoporphyrin to ferriprotoporphyrin; useless for respiration; found in bloody effusions and in the circulating blood after poisoning with acetanilid, potassium chlorate, and other substances.
Synonym(s): hemiglobin, methaemoglobin. MethemoglobinA compound formed from hemoglobin by oxidation.Mentioned in: Nephrotoxic InjuryAcronymsSeeMetHbThesaurusSeehemoglobin |