Destruction. Hemolysis (hemo-lysis) is the destruction of red blood cells with the release of hemoglobin; bacteriolysis (bacterio-lysis) is the destruction of bacteria; etc. Lysis can also refer to the subsidence of one or more symptoms of an acute disease as, for example, the fever of pneumonia.
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1. Destruction of red blood cells, bacteria, and other structures by a specific lysin, usually referred to by the structure destroyed ( e.g., hemolysis, bacteriolysis, nephrolysis); may be due to a direct toxin or an immune mechanism, such as antibody reacting with antigen on the surface of a target cell, usually by binding and activation of a series of proteins in the blood with enzymatic activity (complement system). 2. Gradual subsidence of the symptoms of an acute disease, a form of the recovery process, as distinguished from crisis. [G. dissolution or loosening]
- bystander l. complement-mediated l. of nearby cells in the vicinity of a complement activation site.

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ly·sis 'lī-səs n, pl ly·ses -.sēz
1) the gradual decline of a disease process (as fever) compare CRISIS (1)
2) a process of disintegration or dissolution (as of cells)

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the destruction of cells through damage or rupture of the plasma membrane, allowing escape of the cell contents. See also autolysis, lysozyme.

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ly·sis (liґsis) [Gr. “dissolution; a loosing, setting free, releasing”] 1. dissolution or destruction of an organ or structure, such as the destruction of bone by loss of calcium (osteolysis). 2. cytolysis. 3. decomposition, as of a chemical compound by a specific agent. Cf. degradation. 4. mobilization of an organ by division of restraining adhesions. 5. gradual abatement of the symptoms of a disease; cf. crisis (def. 1).

Medical dictionary. 2011.

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Look at other dictionaries:

  • Lysis — Lysis, dans le lécythe pour son fils Timocléide (IVe siècle A.C). Le Lysis (ou Sur l’Amitié ; Λύσις en grec) est un dialogue de Platon. Il appartient à la série dite des « Premiers Dialogues  …   Wikipédia en Français

  • Lysis — ist sowohl ein altgriechischer Eigenname als auch ein Begriff. Der Begriff (griechisch λύσις, lýsis, „Lösung, Auflösung, Beendigung“; Alternativform: Lyse über das Französische) steht für das Auflösen einer Zelle, siehe Lyse (Biologie) die… …   Deutsch Wikipedia

  • lysis — (n.) dissolution of cells, bacteria, etc., 1902, from L. lysis, from Gk. lysis a loosening, from lyein to unfasten, loose, loosen, untie (see LOSE (Cf. lose)) …   Etymology dictionary

  • -lysis — [lə sis, lisis] [< Gr lysis: see LYSIS] combining form a loosening, dissolution, dissolving, destruction [catalysis, electrolysis] …   English World dictionary

  • Lysis — Ly sis (l[imac] s[i^]s), n. [NL., fr. Gr. ly sis.] (Med.) The resolution or favorable termination of a disease, coming on gradually and not marked by abrupt change. [1913 Webster] Note: It is usually contrasted with crisis, in which the… …   The Collaborative International Dictionary of English

  • lysis — ● lysis nom masculin (grec lusis, action de délier) Allure progressivement décroissante d une courbe thermique. lysis [lizis] n. m. ÉTYM. 1839; archit., 1547; grec lusis. → lyse. ❖ ♦ Méd. Décroissance d une courbe thermique …   Encyclopédie Universelle

  • -lysis — scientific/medical suffix meaning loosening, dissolving, dissolution, from Gk. lysis a loosening, setting free, releasing, dissolution, from lyein to unfasten, loose, loosen, untie (see LOSE (Cf. lose)) …   Etymology dictionary

  • lysis — lysis. См. лизис. (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.

  • Lysis [1] — Lysis (gr.), 1) (Med.), die Lösung, die allmälige Genesung; 2) (Bauk.), so v.w. Rinnleiste …   Pierer's Universal-Lexikon

  • Lysis [2] — Lysis, 1) L. aus Athen, Schüler des Sokrates, nach welchem Plato seinen von der Liebe u. Freundschaft handelnden Dialog nannte. 2) L. aus Tarent, Schüler des Pythagoras, ging nach der Auflösung des Bundes nach Theben, wo er im Hause des… …   Pierer's Universal-Lexikon

  • Lysis — (griech.), s. Krisis …   Meyers Großes Konversations-Lexikon

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