Biochemical and genetic characteristics of atypical Campylobacter fetus subsp. fetus strains isolated from humans in the United States

Edmonds, Paul; Patton, C M; Barrett, Timothy J.; Morris, G K; Steigerwalt, Arnold G.; Brenner, Don J.

doi:10.1128/jcm.21.6.936-940.1985

Cited by 29 publications

(11 citation statements)

References 25 publications

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“…Such strains should be referred to as thermotolerant, not thermophilic. These findings are consistent with data reported previously on the DNA relatedness of C. hyointestinalis to other Campylobacter strains (10)(11)(12)(13)(27)(28)(29).…”

supporting

confidence: 93%

Campylobacter hyointestinalis associated with human gastrointestinal disease in the United States

Edmonds¹,

Patton²,

Griffin³

et al. 1987

J Clin Microbiol

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107

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Campylobacter hyointestinalis was isolated from stool specimens of four persons, all of whom were experiencing nonbloody, watery diarrhea. The youngest (8 months of age) and the oldest (79 years of age) individuals were females, and the other two were homosexual men. C. hyointestinalis was the only clinically significant pathogen isolated from stool specimens for three of the individuals. In case 3 (involving a 37-year-old homosexual man), Entamoeba histolytica and Shigella sonnei were also present in the stool. The identification of all C. hyointestinalis strains was made biochemically and confirmed by DNA hybridization. This study documented the isolation of C. hyointestinalis from four patients with diarrhea, and our findings suggest that the clinical significance of Campylobacter species must be expanded to include C. hyointestinalis as a potential cause of human gastrointestinal disease.

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supporting

confidence: 93%

Campylobacter hyointestinalis associated with human gastrointestinal disease in the United States

Edmonds¹,

Patton²,

Griffin³

et al. 1987

J Clin Microbiol

Self Cite

107

View full text Add to dashboard Cite

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“…fetus subsp. fetus (Devlin & Mclntyre 1983;Edmonds et al 1985;Klein et al 1986) and 'C. upsaliensis' (Taylor et al 1989) show that campylobacters besides C. jejuni and C. coli may cause enteritis in man but at present it is dilficult to evaluate the importance of these types.…”

mentioning

confidence: 99%

Study of haemolytic activity of some Campylobacter spp. on blood agar plates

Arimi

Park

Fricker

1990

Journal of Applied Bacteriology

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A total of 152 strains of Campylobacter jejuni, C. coli, C. laridis and C. fetus subsp. fetus were tested for haemolysis on blood agar plates. Distinct haemolysis was detected in 92.3% (96/104) of strains of C. jejuni and 21.7% (5/23) of strains of C. coli on sheep blood heart infusion agar after incubation for 4 d microaerobically at 42 degrees C. Haemolysis was also detected on horse blood heart infusion agar. Haemolysis was not detected at 37 degrees C except with one of 50 strains of C. jejuni tested at this temperature, which was weakly positive. Campylobacter laridis was not haemolytic; C. fetus subsp. fetus, which does not grow at 42 degrees C, showed no haemolysis at 37 degrees C. Blood agar (Oxoid, BA Base No. 2) was not suitable for testing for haemolysis by these organisms. A microaerobic gas mixture containing hydrogen is better than that containing nitrogen because the medium has a brighter colour, making haemolysis easier to detect. There was no synergistic haemolysis with Staphylococcus aureus or Streptococcus agalactiae. The plate haemolysis test as described here may aid differentiation within the thermophilic campylobacters.

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“…In addition to C. jejuni and C. coli, several other catalase-positive Campylobacter species, Campylobacter fetus subsp. fetus (3,4), Campylobacter laridis (22,25), and Campylobacter hyointestinalis (5), are occasionally responsible for cases of human gastroenteritis.…”

mentioning

confidence: 99%

Isolation and characterization of catalase-negative and catalase-weak strains of Campylobacter species, including "Campylobacter upsaliensis," from humans with gastroenteritis

1989

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strains of catalase-negative or-weak Campylobacter species were isolated in Alberta, Canada. DNA hybridization studies demonstrated that seven strains were "Campylobacter upsaliensis," one strain was highly homologous with Campylobacterjejuni DNA, and one strain was a campylobacter unrelated to the other two species. Ali "C. upsaliensis" strains were hippurate negative, and six of seven were susceptible to cephalothin. The unusual variant of C. jejuni was hippurate positive and cephalothin resistant, whereas the unclassified strain was hippurate negative and resistant to intermediate levels of cephalothin. All patients from whom "C. upsaliensis" was isolated had diarrhea. Five of the patients were children two years old or younger, and two were adults. In this study, all catalase-negative and-weak strains were isolated from stool specimens by using a charcoal-based selective medium containing 32 ,ug of cefaperazone per ml and which was described by Hutchinson and Bolton (D. N. Hutchinson and F.

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Biochemical and genetic characteristics of atypical Campylobacter fetus subsp. fetus strains isolated from humans in the United States

Cited by 29 publications

References 25 publications

Campylobacter hyointestinalis associated with human gastrointestinal disease in the United States

Campylobacter hyointestinalis associated with human gastrointestinal disease in the United States

Study of haemolytic activity of some Campylobacter spp. on blood agar plates

Isolation and characterization of catalase-negative and catalase-weak strains of Campylobacter species, including "Campylobacter upsaliensis," from humans with gastroenteritis

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