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oraxella (Branhamella) catarrhalis is now accepted as Susceptibility testing and Я-lactamase production was catarrhalis were oxidase, catalase and DNAse.

Share. Copy link. Info. Shopping. Tap to unmute. If playback doesn't begin The speed and precision of hydrolysis of tributyrin to butyric acid as a test to detect Branhamella catarrhalis were evaluated. The test proved consistently reliable in the identification of strains and correctly differentiated B catarrhalis from Neisseria sp.

Branhamella catarrhalis catalase test

Superoxide Test (30% Catalase test (3%). Positive. lactamica and Moraxella (Branhamella) catarrhalis. Description catalase- positive M. catarrhalis and Neisseria species by a catalase test.

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In tests of 728 cultures, including 460 N. gonorrhoeae, 4 Neisseria lactamica, 257 Neisseria meningitidis, and 7 Branhamella catarrhalis, both Superoxol (30% H2O2; J. T. Baker Chemical Co., Phillipsburg, N.J.) and amylase inhibition tests were 100% sensitive (positive) for 20-h cultures of N. gonorrhoeae. The DNase test distinguishes M. catarrhalis from all other gram-negative diplococci of human origin.

Moraxella catarrhalis, formerly known as Branhamella catarrhalis, is a Gram-negative, aerobic, nonmotile, nonspore-forming, oxidase-positive, and catalase-positive diplococcus.

Negative results for acid phosphatase, citrate utilization, gelatin liquefaction, urea hydrolysis, hydrogen sulfide, indole production, phenylalanine deamination, Tween 80 hydrolysis. Se hela listan på catalog.hardydiagnostics.com Se hela listan på en.wikipedia.org We evaluated the superoxol (catalase) test as a means of differentiating gonococci from related species of organisms which were cultured from a variety of anatomical sites. An isolate was almost certainly not a gonococcus if it gave a negative superoxol test result, as all but one of 596 available gonococci gave positive test results.

Catalase A total of 176 strains identified as Branhamella catarrhalis were isolated from various clinical specimens, mainly sputum (71), pharynx (49), eye (24), nose (11), ear (6) and tracheal aspirate (7). B. catarrhalis appeared as Gram-negative cocci in white colonies which were oxidase- and catalase-positive and which did not produce acidification Branhamella catarrhalis has a pinkish-brown pigmentation on Chocolate Agar. Colonies at 48 hours are approximately 2-2.5mm in diameter, hemispherical, becoming larger and flat or convex with prolonged incubation. The colonies have a "hockey puck" consistency and may be moved intact over the surface of the medium using an inoculating loop. Moraxella catarrhalis, formerly known as Branhamella catarrhalis, is a Gram-negative, aerobic, nonmotile, nonspore-forming, oxidase-positive, and catalase-positive diplococcus. In tests of 728 cultures, including 460 N. gonorrhoeae, 4 Neisseria lactamica, 257 Neisseria meningitidis, and 7 Branhamella catarrhalis, both Superoxol (30% H2O2; J. T. Baker Chemical Co., Phillipsburg, N.J.) and amylase inhibition tests were 100% sensitive (positive) for 20-h cultures of N. gonorrhoeae.
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ϒ-glutamyl transférase négative, absence de synthèse de polysaccharides à partir du saccharose. DIAGNOSTIC DIFFERENTIEL Moraxella catarrhalis o Branhamella catarrhalis - YouTube. Moraxella catarrhalis o Branhamella catarrhalis. Watch later.
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A total of 176 strains identified as Branhamella catarrhalis were isolated from various clinical specimens, mainly sputum (71), pharynx (49), eye (24), nose (11), ear (6) and tracheal aspirate (7). B. catarrhalis appeared as Gram-negative cocci in white colonies which were oxidase- and catalase-positive and which did not produce acidification of sugars.

Cultures of the M. catarrhalis tested positive for oxidase, lipase, and nitrate reduction, which is characteristic of M. catarrhalis. Many laboratories also perform a butyrate esterase test and a beta-lactamase test. Both tests should be positive and can help to rapidly identify it from a culture. MORAXELLA (SUBGENUS - BRANHAMELLA) 27 plus species including: SPECIES Moraxella atlantae Moraxella bovis Moraxella ( Branhamella ) catarrhalis Typically positive results with Moraxella catarrhalis: The oxidase test; The catalase test; Tributyrin hydrolysis; Typically negative results with Moraxella catarrhalis: Acid from glucose; Acid from maltose; Acid from fructose; Acid from sucrose; γ (gamma)-glutamylaminopeptidase; Polysaccharide synthesis A total of 176 strains identified as Branhamella catarrhalis were isolated from various clinical specimens, mainly sputum (71), pharynx (49), eye (24), nose (11), ear (6) and tracheal aspirate (7).

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animal species Branhamella caviae, Branhamella ovis, and Branhamella cuniculi from the Neisseria spp. (12). The hydrolysis of tributyrin has not been extensively exploited for identification ofB. catarrhalis in the clinical laboratory. Vaneechoutte andco-workers (11) recently reported a rapid tributyrin hydrolysis test that used 4

fluorescence method for indole-3-acetic acid détermination in crude plant extracts. Studies on Branhamella catarrhalis (Neisseria catarrhalis) with Special Refer-. Konstruktion och utprövning av ett test -för mätning av kategoribredd (sten cil), 1972.