Species belonging to the "Streptococcus milleri" group: antimicrobial susceptibility and comparative prevalence in significant clinical specimens

Bantar, Carlos; Canigia, Liliana Fernández; Relloso, Silvia; Lanza, Alejandra; Bianchini, H; Smayevsky, Jorgelina

doi:10.1128/jcm.34.8.2020-2022.1996

Cited by 59 publications

(22 citation statements)

References 13 publications

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“…In the Netherlands, in a recent study carried out from September 1995 to June 1999, 342 isolates were recovered and only 11 (3.2%) were considered to be resistant to erythromycin A, which was regarded as a moderate increase in comparison with a previous period in the same hospital, when 2.6% of the isolates were resistant to erythromycin A [12,13]. Comparable data were reported from Argentina in 1996 [14]. A higher resistance rate had been reported from Spain, with 14.3% and 17.7% of erythromycin A resistance in 1994 and 1999, respectively [15,16].…”

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confidence: 93%

Viridans group streptococci: a reservoir of resistant bacteria in oral cavities

Bryskier¹

2002

Clinical Microbiology and Infection

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The worldwide spread of erythromycin A-resistant streptococci, including Streptococcus pneumoniae, is of concern. Many studies have demonstrated that the viridans group streptococci can be a reservoir of erythromycin A resistance. Within oral streptoccoci, an important difference in the susceptibility pattern has been noted. The purpose of this short editorial is to highlight the importance of this group of bacteria as a reservoir of resistance to erythromycin A and the possible transfer of resistance to S. pneumoniae and S. pyogenes.

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confidence: 93%

Viridans group streptococci: a reservoir of resistant bacteria in oral cavities

Bryskier¹

2002

Clinical Microbiology and Infection

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“…Oral streptococci belonging to the Streptococcus milleri group (Streptococcus anginosus, S. constellatus , and S. intermedius) are considered to relate particularly to purulent infections not only in the oral region but also in various body sites (2,4,19,27). However, most purulent infections in the oral cavity are polybacterial infections, and some types of oral bacteria, such as streptococci and Gram-negative obligately anaerobic rods, are simultaneously isolated from the dentoalveolar abscesses (3, 8, 10-14, 16, 17).…”

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confidence: 99%

Abscess Forming Ability of Streptococcus milleri Group: Synergistic Effect with Fusobacterium nucleatum

Nagashima

Takao

Maeda

1999

Microbiology and Immunology

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The abscess forming abilities of "Streptococcus milleri" strains (Streptococcus constellatus, Streptococcus anginosus, and Streptococcus intermedius) isolated from dentoalveolar abscesses and the synergistic effect of Fusobacterium nucleatum co-inoculated with the isolates were examined on a mouse subcutaneous abscess model. Five days after inoculation, all S. milleri strains formed abscesses, which showed less pathological spread to surrounding connective tissues than those formed by Staphylococcus aureus 209P strain and were similar to those by F nucleatum ATCC25586. When each S. milleri strain and F nucleatum were co-inoculated, abscess sizes and each bacterial number recovered from abscesses increased in comparison to those treated by bacterial mono-inoculation of each S. milleri strain or F nucleatum alone. The strongest synergistic effect was observed in the combination of S. constellatus and F. nucleatum. In a time course experiment with this combination, the recovery of S. constellatus subsequently decreased after the decrement of F. nucleatum, and it appeared that the association with F nucleatum maintained the bacterial number of S. constellatus in the abscess. The cell-free supernatant of F nucleatum had a tendency to increase the abscess size caused by S. constellatus in this model. When S. constellatus was cultured with F. nucleatum culture supernatant in vitro, growth enhancement in the early phase was observed. Furthermore, the phagocytic killing of S. constellatus by human polymorphonuclear leukocytes (PMNs) was significantly suppressed and the PMN membranes appeared to be injured by addition of the F. nucleatum culture supernatant. These results suggest that the pathogenicity of S. milleri strains in odontogenic infections may be enhanced by the co-existence of F. nucleatum .

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“…These streptococci are part of the physiological microflora of the upper respiratory, urogenital and alimentary tracts. They are opportunistic microorganisms, but they may often cause invasive, purulent infections and can spread through the blood vessels, cause abscesses of the brain, liver, spleen, lungs, bones, endocarditis,and many other infections [1,[3][4][5].…”

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confidence: 99%

Streptococcus constellatus as an aetiological factor of extensive neck phlegmon complicated by sepsis – case study

Bilska-Stokłosa

Tomczak

Hampelska

et al. 2019

Ann Agric Environ Med.

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Introduction. Streptococcus constellatus are opportunistic microorganisms. When immunocompromised patients with concomitant systemic diseases are infected with S.constellatus, the bacteria may cause sepsis. Case study. A patient was admitted to hospital due to septic shock and multi-organ dysfunction in the course of neck phlegmon. The microbiological system identified S. constellatus in the patient who worked as a dog groomer. These facts confirmed that this aetiological factor may have caused such a serious infection because S. constellatus is a bacterial species found in dogs. It is most likely that the bacteria colonised the patient. Zoonotic transmission of microorganisms is particularly important for the development of infections in dogs and humans. Knowledge about how to treat deep cervical infections is necessary in the daily practice of a maxillofacial surgeon. The right antibiotic can applied only when the strain causing the infection has been identified.

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Species belonging to the "Streptococcus milleri" group: antimicrobial susceptibility and comparative prevalence in significant clinical specimens

Cited by 59 publications

References 13 publications

Viridans group streptococci: a reservoir of resistant bacteria in oral cavities

Viridans group streptococci: a reservoir of resistant bacteria in oral cavities

Abscess Forming Ability of Streptococcus milleri Group: Synergistic Effect with Fusobacterium nucleatum

Streptococcus constellatus as an aetiological factor of extensive neck phlegmon complicated by sepsis – case study

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