Semiquantitative catalase test as an aid in identification of oxidative and nonsaccharolytic gram-negative bacteria

Chester, B

doi:10.1128/jcm.10.4.525-528.1979

Cited by 13 publications

(10 citation statements)

References 4 publications

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“…Excellent correlation was observed in test results for both TTGA and modified TTGA media. Results for the 78 vibrios examined on modified TTGA medium are presented in 11 (100) 1(100) 0 (0) 0 (0) 1 (100) 0 (0) 1 (100) 1 (100) V. fluvialis (5) 5 (100) 5 (100) 4 (80) 0 (0) 1 (20) 4 (80) 5 (100) 5 (100) V. harveyii (1) 1 (100) 0 (0) 0 (0) 1 (100) 0 (0) 0 (0) 1 (100) 1(100) V. metschnikoviid (1) 0 (0) 1 (100)…”

Section: Resultsmentioning

confidence: 99%

“…V. nereis (1) 1 (100) 0 (0) 0 (0) 0 (0) 0 (0) 1 (100) 0 (0) 0 (0) V. nigrapulchritudo (1) 1 (100) 0 (0) 0 (0) 0 (0) 1 (100)…”

Section: Resultsunclassified

“…Both tests have proven useful in differentiation among Pseudomonas spp. (1) and Vibrio spp. (2,12,14), respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Tellurite reduction, gelatinase production, and susceptibility to 0/129 were determined by direct visual examination of cultures on agar plates. The following characteristics were also determined directly from plate cultures: Gram reaction by the KOH method of Gregerson (5), oxidase (6), catalase (1), and catalase reaction speed (1).…”

Section: Methodsmentioning

confidence: 99%

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Modified taurocholate-tellurite-gelatin agar for improved differentiation of Vibrio species

O’Brien¹,

Colwell²

1985

J Clin Microbiol

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A total of 78 strains, representing 21 Vibrio species, were examined by using taurocholate-tellurite-gelatin agar (TTGA) medium and modified TTGA medium containing 4-methylumbelliferyl-I8-D-galactoside (150 ,ig/ml). Modified TTGA medium allowed for simple and direct detection of P-D-galactosidase (P-gal) activity. This feature, in conjunction with other differential characteristics of TTGA medium, gave improved differentiation of the vibrios tested. The modified TTGA medium allowed for easy differentiation of Vibrio cholerae (jP-gal') from Vibrioparahaemolyticus (P-gali). The 4-methylumbelliferyl-4-D-galactoside substrate is inexpensive and very stable. Incorporation into the agar did not affect the performance of TTGA as a * Corresponding author.

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Section: Resultsmentioning

confidence: 99%

“…V. nereis (1) 1 (100) 0 (0) 0 (0) 0 (0) 0 (0) 1 (100) 0 (0) 0 (0) V. nigrapulchritudo (1) 1 (100) 0 (0) 0 (0) 0 (0) 1 (100)…”

Section: Resultsunclassified

“…Both tests have proven useful in differentiation among Pseudomonas spp. (1) and Vibrio spp. (2,12,14), respectively.…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Modified taurocholate-tellurite-gelatin agar for improved differentiation of Vibrio species

O’Brien¹,

Colwell²

1985

J Clin Microbiol

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“…were used for the rapid catalase test. The methodology is basically the same as previously described (1).…”

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confidence: 99%

Rapid catalase supplemental test for identification of members of the family Enterobacteriaceae

Chester¹,

Moskowitz²

1987

J Clin Microbiol

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A simple, rapid, semiquantitative slide catalase test useful for differentiating members of the family Enterobacteriaceae is described. Judging by the time required for appearance of oxygen bubbles in 3% hydrogen peroxide, the immediate catalase reactors were Yersinia, Serratia, Proteus, Morganella, Providencia, Cedecea, and Hafnia spp. The delayed catalase reactors were Escherichia, Shigella, Klebsiella, Enterobacter, Salmonella, Citrobacter, Edwardsiella, Kluyvera, and Tatumella spp. This information is especially useful for differentiating Serratia from Enterobacter spp. and Yersinia from Escherichia and Shigella spp.

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Oligella spp.: A systematic review on an uncommon urinary pathogen

Farfour,

Vasse,

Vallée

2024

Eur J Clin Microbiol Infect Dis

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Background Oligella is an uncommon Gram-negative coccobacillus that was first thought to belong to the urogenital tract. The genus Oligella comprises two species that were recovered from various samples worldwide. Methods We perform a systematic review focusing on Oligella microbiological characteristics, habitat, role in Human microbiome and infection, and antimicrobial susceptibility. Results In humans, Oligella is mainly found as part of the microbiome of individuals with predisposing conditions. Oligella were also associated with invasive infections in patients with underlying diseases. Nevertheless, their prevalence remains to determine. Oligella culture requires up to 48 h on agar media in vitro, while urinary samples are usually incubated for 24 h. Consequently, microbiologists should be prompt to prolong the incubation of agar media when the direct examination showed Gram-negative coccobacilli. Oligella is accurately identified using MALDI-TOF mass spectrometry, but biochemical methods often provided inconsistent results. Specific guidelines for antimicrobial susceptibility testing of Oligella lack but the incubation could require up to 48 h of incubation. In contrast to O. urethralis, which is susceptible to third-generation cephalosporin, O. ureolytica is likely resistant to numerous antimicrobials. Genectic determinants of resistance were identified for beta-lactams and aminoglycosides. Conclusion Oligella is an uncommon pathogen that can be underrecognized. Microbiologists should be prompt to prolong the incubation of agar media plated with urines when the direct examination showed Gram-negative coccobacilli. Carbapenems should probably be given for the empirical treatment.

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Semiquantitative catalase test as an aid in identification of oxidative and nonsaccharolytic gram-negative bacteria

Cited by 13 publications

References 4 publications

Modified taurocholate-tellurite-gelatin agar for improved differentiation of Vibrio species

Modified taurocholate-tellurite-gelatin agar for improved differentiation of Vibrio species

Rapid catalase supplemental test for identification of members of the family Enterobacteriaceae

Oligella spp.: A systematic review on an uncommon urinary pathogen

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