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mycoplasmaenUK
my·co·plas·ma M0507450 (mī′kō-plăz′mə)n. Any of various extremely small bacteria of the genus Mycoplasma that lack cell walls, are usually nonmotile, and are often pathogenic or parasitic in mammals.
[New Latin genus name : myco- + plasma.]
my′co·plas′mal adj.mycoplasma (ˌmaɪkəʊˈplæzmə) n (Microbiology) any prokaryotic microorganism of the genus Mycoplasma, some species of which cause disease (mycoplasmosis) in animals and humansmy•co•plas•ma (ˌmaɪ koʊˈplæz mə)
n., pl. -mas. any of a group of very small microorganisms without cell walls, of the prokaryote class Mollicutes, that are a common cause of pneumonia and urinary tract infections. [1955–60; < New Latin (1929), a genus; see myco-, plasma] Thesaurus| Noun | 1. | mycoplasma - any of a group of small parasitic bacteria that lack cell walls and can survive without oxygen; can cause pneumonia and urinary tract infectioneubacteria, eubacterium, true bacteria - a large group of bacteria having rigid cell walls; motile types have flagellagenus Mycoplasma - type and sole genus of the family Mycoplasmataceaepleuropneumonialike organism, PPLO - a mycoplasma resistant to antibiotics that causes a kind of pneumonia in humans |
EncyclopediaSeeMycoplasmasMycoplasmaenUK
Mycoplasma [mi´ko-plaz″mah] a genus of highly pleomorphic, gram-negative, aerobic or facultatively anaerobic bacteria that lack cell walls, including the pleuropneumonia-like organisms and other species.Mycoplasma ho´minis a species found associated with urethritis" >nongonococcal urethritis and mild pharyngitis.Mycoplasma pneumo´niae a cause of primary atypical pneumonia; called also Eaton agent.Mycoplasma (mī'kō-plaz'mă), A genus of aerobic to facultatively anaerobic bacteria (family Mycoplasmataceae) containing gram-negative cells that do not possess a true cell wall but are bounded by a three-layered membrane; they do not revert to bacteria-containing cell walls or cell wall fragments. The minimal reproductive units of these organisms are 0.2-0.3 mcm in diameter. The cells are pleomorphic, and in liquid media appear as coccoid bodies, rings, or filaments. Colonies of most species consist of a central core, growing down into the medium, surrounded by superficial peripheral growth. They require sterol for growth. They also require enrichment with serum or ascitic fluid. These organisms are found in humans and other animals and can be pathogenic. The type species is Mycoplasma mycoides. Synonym(s): Asterococcus [myco- + G. plasma, something formed (plasm)]
my·co·plas·ma, pl. my·co·plas·ma·ta (mī'kō-plaz'mă, -plaz'mah-tă), A vernacular term used only to refer to any member of the genus Mycoplasma.mycoplasma (mī′kō-plăz′mə)n. Any of various extremely small bacteria of the genus Mycoplasma that lack cell walls, are usually nonmotile, and are often pathogenic or parasitic in mammals.
my′co·plas′mal adj.Mycoplasma A genus of incomplete intracellular and extracellular pathogens of class Mollicutes, which cause walking pneumonia that resolves in 4–6 weeks and genitourinary infections. M hominis may cause pelvic inflammatory disease, septicaemia and urogenital infection.
Microbiology
Mycoplasma measure 0.25 µm, lack cell wall precursors (N-acetyl glucosamine and N-acetylmuramic acid), divide by binary fusion and fragmentation, and have CO2 and NH3 as end products of ureaplasma enzymatic hydrolysis. The growth medium requires fresh yeast or fatty acids, sterols and nucleic acids; the spherule seen on culture represents a microcolony and has a fried egg appearance. M pneumoniae produces hydrogen peroxide, may be identified by hemadsorption and CF, and infects epithelial cells without producing leukocytosis.
Diagnosis
Based on a a single titre of > 1:256, or a 4-fold increased in titer when ≥ 2 specimens have been obtained from the patient on different occasions.Mycoplasma Infectious disease A pathogen that causes 'walking pneumonia'–resolving in 4-6 wks, and genitourinary infections. M hominis may cause PID, septicemia, urogenital infectionMy·co·plas·ma (mī'kō-plaz'mă) A genus of aerobic to facultatively anaerobic bacteria containing gram-negative cells that do not possess a true cell wall but are bounded by a three-layered membrane. The cells are pleomorphic and, in liquid media, appear as coccoid bodies, rings, or filaments. These organisms are found in humans and other animals and are parasitic to pathogenic. [myco- + G. plasma, something formed (plasm)]
my·co·plas·ma, pl. mycoplasmata (mī'kō-plaz-mă, -plaz'mă-tă) A vernacular term used to refer to any member of the genus Mycoplasma. Mycoplasma A genus of very small micro-organisms, about the size of some viruses but capable of independent existence. Unlike bacteria they have no cell walls. Mycoplasma pneumoniae causes outbreaks of PNEUMONIA in institutions. Mycoplasma hominis , is often present harmlessly in the mouth or vagina but is believed to be a cause of URETHRITIS and SALPINGITIS. Mycoplasma infections respond to TETRACYCLINE and ERYTHROMYCIN.MycoplasmaA type of free-living microorganism that has no cell wall. Mycoplasmas cause some varieties of pneumonia and urinary tract infections that stimulate the body to produce cold agglutinins.Mentioned in: Cold Agglutinins TestMy·co·plas·ma (mī'kō-plaz'mă) A genus of aerobic to facultatively anaerobic bacteria found in humans and other animals; range from parasitic to pathogenic. [myco- + G. plasma, something formed (plasm)]mycoplasmaenUK
Related to mycoplasma: Mycoplasma genitalium, Mycoplasma hominis, Mycoplasma pneumoniae, UreaplasmaWords related to mycoplasmanoun any of a group of small parasitic bacteria that lack cell walls and can survive without oxygenRelated Words- eubacteria
- eubacterium
- true bacteria
- genus Mycoplasma
- pleuropneumonialike organism
- PPLO
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