hemolysis

hemolysis
—hemolytic /hee'meuh lit"ik, hem'euh-/, adj.
/hi mol"euh sis/, n.
the breaking down of red blood cells with liberation of hemoglobin. Also called hematolysis.
[1885-90; HEMO- + -LYSIS]

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also spelled  Haemolysis, 

      breakdown or destruction of red blood cells (erythrocyte) so that the contained hemoglobin is freed into the surrounding medium. antibody (lysin) attaches to the red cell but cannot cause bursting in the absence of a normal blood component called complement. Apart from normal breakdown of aged red blood cells, hemolysis is abnormal in the living but may be caused by inherited defects in the blood cells (e.g., hereditary spherocytosis, thalassemia), by chemicals, venoms, the toxic products of microorganisms, transfusion of the wrong blood type, or Rh incompatibility of fetal and maternal blood, a condition called erythroblastosis fetalis. It is a major finding in hemolytic anemia.

      Hemolysis may be produced in the laboratory by various physical agents (heat, freezing, flooding with water, sound); in certain situations it is used as a specific laboratory test for antigen–antibody reactions. Hemolysis caused by physical agents is rare in the living because of body buffering systems; but in the disease paroxysmal cold hemoglobinuria, exposure to cold causes self-produced hemolyzing agents to destroy the individual's own red cells.

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Universalium. 2010.

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Look at other dictionaries:

  • Hemolysis — (or haemolysis) from the Greek Hemo , Greek Polytonic|Αἷμα meaning blood, lysis, meaning to break open is the breaking open of red blood cells and the release of hemoglobin into the surrounding fluid (plasma, in vivo ). In vivo hemolysis In vivo… …   Wikipedia

  • hemolysis — n. The lysis of erythrocytes with the release of hemoglobin; the breaking apart of red blood cells in the blood. Syn: haemolysis, hematolysis, haematolysis. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • hemolysis — hemolysis. См. гемолиз. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • hemolysis — [hē mäl′ə sis, hē΄mō lī′sis] n. [ HEMO + LYSIS] the destruction of red corpuscles with liberation of hemoglobin into the surrounding fluid hemolytic [hē΄mō lit′ik, hem΄əlit′ik] adj …   English World dictionary

  • hemolysis — (he mol ī sis) The disruption of red blood cells and release of their hemoglobin. There are several types of hemolysis when bacteria such as streptococci and staphylococci grow on blood agar. In a hemolysis, a narrow greenish zone of incomplete… …   Dictionary of microbiology

  • Hemolysis — The destruction of red blood cells which leads to the release of hemoglobin from within the red blood cells into the blood plasma. Etymology: The word hemolysis is made up of hemo , blood + lysis , the disintegration of cells. * * * Alteration,… …   Medical dictionary

  • hemolysis — hemolizė statusas T sritis chemija apibrėžtis Eritrocitų irimas ir hemoglobino išsiliejimas. atitikmenys: angl. hemolysis rus. гемолиз …   Chemijos terminų aiškinamasis žodynas

  • Hemolysis (microbiology) — Hemolysis is the breakdown of red blood cells. The ability of bacterial colonies to induce hemolysis when grown on blood agar is used to classify certain microorganisms. This is a particularly useful in classifying streptococcal species. A… …   Wikipedia

  • hemolysis — noun Etymology: New Latin Date: 1890 lysis of red blood cells with liberation of hemoglobin • hemolytic adjective …   New Collegiate Dictionary

  • hemolysis — n. [Gr. haima, blood; lyein, to dissolve] The breakdown or destruction of red blood corpuscles …   Dictionary of invertebrate zoology

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