Characteristics of Yersinia intermedia-like bacteria isolated from patients with diarrhea in Nigeria

Agbonlahor, D. E.

doi:10.1128/jcm.23.5.891-896.1986

Cited by 18 publications

(5 citation statements)

References 28 publications

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“…As iron-overloaded mice succumbed within 24 h of intraperitoneal inoculation, the authors suggested that mouse pathogenicity of Y. kristensenii, especially O serogroups O:11, O:12,25, and O:16, may be attributed to a mechanism not previously recognized in yersiniae. Perhaps the same is true for Y. intermedialike isolates and Y. frederiksenii (4,10,29,183) recovered from diarrheagenic stools.…”

Section: Assessment For Virulence Traitsmentioning

confidence: 88%

Yersinia enterocolitica: the charisma continues

1997

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Yersinia enterocolitica, a gram-negative coccobacillus, comprises a heterogeneous group of bacterial strains recovered from animal and environmental reservoirs. The majority of human pathogenic strains are found among distinct serogroups (e.g. O:3, O:5,27, O:8, O:9) and contain both chromosome- and plasmid (60 to 75 kb)-mediated virulence factors that are absent in "avirulent" strains. While Y. enterocolitica is primarily a gastrointestinal tract pathogen, it may produce extraintestinal infections in hosts with underlying predisposing factors. Postinfection sequelae include arthritis and erythema nodosum, which are seen mainly in Europe among patients with serogroups O:3 and O:9 infection and HLA-B27 antigen. Y. enterocolitica is acquired through the oral route and is epidemiologically linked to porcine sources. Bacteremia is prominent in the setting of immunosuppression or in patients with iron overload or those being treated with desferrioxamine. metastatic foci following bacteremia are common and often involve the liver and spleen. Of particular concern is blood transfusion-related bacteremia. Evidence has accumulated substantiating the role of Y. enterocolitica as a food-borne pathogen that has caused six major outbreaks in the United States. The diagnosis of Y. enterocolitica gastroenteritis is best achieved through isolation of the bacterium on routine or selective bacteriologic media. When necessary, serogrouping, biogrouping, and assessment for plasmid-encoded virulence traits may aid in distinguishing virulent from "avirulent" strains. Epidemiologically, outside of identified food-borne outbreaks, the source (reservoir) of Y. enterocolitica in sporadic cases is speculative. Therefore, prevention and control measures are difficult to institute.

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Section: Assessment For Virulence Traitsmentioning

confidence: 88%

Yersinia enterocolitica: the charisma continues

1997

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“…Strains of all Y. enterocolitica ‐like species have been isolated from clinical specimens [4,5], and virulence factors have been detected in several strains of these species [6–12]. In addition, certain strains of Y. enterocolitica ‐like species have been shown to cause human disease [4,13,14]. Recently, Loftus et al showed that up to 20% of all yersiniae isolated from stool specimens of patients with gastrointestinal symptoms may represent Y. enterocolitica ‐like strains [15].…”

Section: Introductionmentioning

confidence: 99%

Natural antimicrobial susceptibilities and biochemical profiles ofYersinia enterocolitica-like strains:Y. frederiksenii,Y. intermedia,Y. kristenseniiandY. rohdei

Stock

Wiedemann

2003

FEMS Immunology &Amp; Medical Microbiology

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The natural susceptibility of 131 Yersinia strains of Y. frederiksenii (n=38), Y. intermedia (n=48), Y. kristensenii (n=26) and Y. rohdei (n=19) to 70 antibiotics was tested. Minimum inhibitory concentration (MIC) values were determined with a microdilution procedure in IsoSensitest broth (all strains) and cation-adjusted Mueller Hinton broth (some strains). All species were naturally sensitive or sensitive and of intermediate susceptibility to tetracyclines, aminoglycosides, acylureidopenicillins, numerous cephalosporins, carbapenems, aztreonam, quinolones, chloramphenicol, folate-pathway inhibitors, nitrofurantoin, and fosfomycin. Uniform natural resistance was found with penicillin G, oxacillin, several macrolides, lincosamides, streptogramins, glycopeptides, rifampicin and fusidic acid. Species-specific differences in susceptibility affecting clinical assessment criteria were seen with aminopenicillins (in the presence and absence of beta-lactamase inhibitors), ticarcillin and some cephalosporins. Major medium-dependent susceptibilities were found with fosfomycin. beta-Lactam MIC susceptibility patterns suggested that most strains of the species tested produce both class A and class C (AmpC) beta-lactamases that are characteristic for the species. The present study describes a database concerning the natural susceptibility of some Y. enterocolitica-like species to a wide range of antibiotics, which can be applied to validate forthcoming antibiotic susceptibility tests of these strains and might contribute to their identification. An evaluation of 30 biochemical tests that secured phenotypic identification to the Yersinia species level is presented.

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“…According to Robins-Browne (2001), Y. intermedia species are not related to human disease but are commonly obtained from terrestrial and freshwater. However, there is growing epidemiological and experimental evidence to suggest that some Y. intermedia isolated from human can cause disease (Agbonlahor, 1986). These authors suggest that there may be two subgroups of Y. intermedia: pathogenic strains of clinical origin and nonpathogenic strains that occur in the environment.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Yersinia spp. strains isolated from pigs in Abidjan, Cte dIvoire, West Africa

Atobla¹,

Kakou-Ngazoa²,

Dadi³

et al. 2014

Afr. J. Microbiol. Res.

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The aim of this study was to evaluate the prevalence and determine the molecular virulence of the pathogenic Yersinia spp. strains recovered from raw pig samples from a slaughterhouse in Abidjan, Côte d'Ivoire. A total of 460 raw pig samples including 200 tongues, 150 tonsils, 110 feces, were characterized phenotypically and genotypically for virulence genes. The strains were also tested for the presence of virulence gene using polymerase chain reaction (PCR). Nine (2%) Yersinia strains were isolated from the 460 samples. The isolates belonged to various bio-serogroup such as Yersinia enterocolitica 4/O:3/VIII (33.3%), Yersinia intermedia 4/autoagglutinable (44.4%) and Y. intermedia 5/O:7,8-8-8,19 (22.2%). Tonsils were the most contaminated organ from pig with 66.7% of isolated Yersinia strains. The Yersinia strains exhibited phenotypic virulence characteristics and virulence genes such as ail (3/9), ystA (8/9) and yadA (2/9). Two Y. enterocolitica 4/O:3 strains carried simultaneously all three virulence genes. Among these bacteria, virulent strains of Y. enterocolitica were found, with biotype and serogroup related to human diseases, representing a risk for the consumers of pork. This study is the first that documented the occurrence of pathogenic Yersinia and related species in pigs in Côte d'Ivoire. The occurrence of virulence strains of Y. enterocolitica shows that pork is a potential source of human infection by this species and the circulation of Yersinia spp. in pigs in Côte d'Ivoire.

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Characteristics of Yersinia intermedia-like bacteria isolated from patients with diarrhea in Nigeria

Cited by 18 publications

References 28 publications

Yersinia enterocolitica: the charisma continues

Yersinia enterocolitica: the charisma continues

Natural antimicrobial susceptibilities and biochemical profiles ofYersinia enterocolitica-like strains:Y. frederiksenii,Y. intermedia,Y. kristenseniiandY. rohdei

Characterization of Yersinia spp. strains isolated from pigs in Abidjan, Cte dIvoire, West Africa

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