CAMP‐like Reactions for Presumptive Identification of <i>Bacillus cereus</i> from Bovines

Lämmler, Christoph; Gedek, W.; Blobel, H.

doi:10.1111/j.1439-0450.1987.tb00413.x

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…The selection of strains to clear up the possible existence of their hemolytical interactions with the above species was determined by both the data of other authors and our own experience (12). The staphylococcal beta hemolysin and phospholipase D of C.pseudotuberculosis are most often used for the detection of these phenomena and the mutual interaction of staphylococcal hemolysins are well known (2,3,6,8,12). S. hyicus and S. cbromogener inhibit staphylococcal hemolysin delta (13) like some micrococci (9), particularly M .…”

Section: Discussionmentioning

confidence: 99%

Hemolytic Interactions of Dermatophilus congolensis

Skalka

Pospíśil

1992

Journal of Veterinary Medicine, Series B

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The strains of Dermatophilus congolensis grew on blood agar with washed sheep erythrocytes with marked total hemolysis. In testing for hemolytic interactions they gave a significant synergistic effect of a characteristic shape with Rhodococcus equi and Streptococcus agalactiae, whereas with Staphylococcus aureus producing beta hemolysin and with Staphylococcus aureus producing delta hemolysin a simultaneous synergistic as well as antagonistic effect were observed. First of all a conspicuous inhibition of in the beta hemolysin zone began and then the hemolytic effect of D. congolensis was enhanced. A similar double reaction was also observed with Listeria ivanovii. With delta hemolysin there was an inhibition of the hemolytic effect of D. congolensis and at the same time a synergistic effect could be observed. Also D. congolensis gave a weak synergistic effect with Micrococcus lylae and Licteria monocytogenes, and a further weak antagonistic effect with alpha hemolysin of Staphylococcus aureus, Staphylococcus hyicus, Staphylococcus cbromogenes and Micrococcus luteus.

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Section: Discussionmentioning

confidence: 99%

Hemolytic Interactions of Dermatophilus congolensis

Skalka

Pospíśil

1992

Journal of Veterinary Medicine, Series B

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“…CAMP factors have already been described in other streptococci such as S. pyogenes [20], [58], S. uberis [14], [22], [59], [60], S. porcinus [22], [59], [61], [62], S. canis [22], [23], [62], S. intestinalis [63]. Furthermore BLASTp analysis showed that cfb homologues in P. acnes , S. uberis , S. canis, S. porcinus and S. pyogenes exhibit significant homologies with CAMP factor (34 to 99%).…”

Section: Resultsmentioning

confidence: 99%

Characterization of a New CAMP Factor Carried by an Integrative and Conjugative Element in Streptococcus agalactiae and Spreading in Streptococci

Chuzeville

Puymège

Madec³

et al. 2012

PLoS ONE

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Genetic exchanges between Streptococci occur frequently and contribute to their genome diversification. Most of sequenced streptococcal genomes carry multiple mobile genetic elements including Integrative and Conjugative Elements (ICEs) that play a major role in these horizontal gene transfers. In addition to genes involved in their mobility and regulation, ICEs also carry genes that can confer selective advantages to bacteria. Numerous elements have been described in S. agalactiae especially those integrated at the 3′ end of a tRNALys encoding gene. In strain 515 of S. agalactiae, an invasive neonate human pathogen, the ICE (called 515_tRNALys) is functional and carries different putative virulence genes including one encoding a putative new CAMP factor in addition to the one previously described. This work demonstrated the functionality of this CAMP factor (CAMP factor II) in Lactococcus lactis but also in pathogenic strains of veterinary origin. The search for co-hemolytic factors in a collection of field strains revealed their presence in S. uberis, S. dysgalactiae, but also for the first time in S. equisimilis and S. bovis. Sequencing of these genes revealed the prevalence of a species-specific factor in S. uberis strains (Uberis factor) and the presence of a CAMP factor II encoding gene in S. bovis and S. equisimilis. Furthermore, most of the CAMP factor II positive strains also carried an element integrated in the tRNALys gene. This work thus describes a CAMP factor that is carried by a mobile genetic element and has spread to different streptococcal species.

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CAMP‐like Reactions for Presumptive Identification of Bacillus cereus from Bovines

Cited by 2 publications

References 6 publications

Hemolytic Interactions of Dermatophilus congolensis

Hemolytic Interactions of Dermatophilus congolensis

Characterization of a New CAMP Factor Carried by an Integrative and Conjugative Element in Streptococcus agalactiae and Spreading in Streptococci

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