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PubMed2005

[Implication of ermX genes in macrolide- and telithromycin-resistance in Corynebacterium jeikeium and Corynebacterium amycolatum].

The activity of seven macrolides, clindamycin and telithromycin against clinical isolates of Corynebacterium spp. was studied. Of these, 36 isolates were identified as C. jeikeium and 57 as C. amycolatum. The frequency of resistance to erythromycin and other macrolides as well as clindamycin was high, with CMI(90) >256 microg/ml. Telithromycin showed the best activity, with 52.3% of C. amycolatum and 70% of C. jeikeium erythromycin-resistant strains susceptible to this ketolide. All strains had the MLSb constitutive phenotype. The ermX gene was present in all erythromycin-resistant strains, and in C. amycolatum was 100% homologous with that of C. striatum and C. diphtheriae.

Anti-Bacterial Agents↗
PubMed1985

Adhesion of Corynebacterium renale and Corynebacterium pilosum to epithelial cells of bovine vulva.

Corynebacterium renale and C pilosum adhered effectively to the epithelial cells of the bovine vulva; the numbers of these organisms that adhered to the vulval epithelial cells were 50 and 30/cell, respectively, which were several times as many as those that adhered to the uroepithelial cells. Of the epithelial cells of the vulva, cornified cells lacking nuclei bound more bacteria than did those with indistinct nuclei, indicating that adhesion of bacteria was most effective to the most aged cells. The marked adhesion of C renale and C pilosum to the epithelial cells of the vulva may indicate that the vulva is an important portal of entry of these bacteria.

Adhesiveness↗
PubMed1977

[Effect of Corynebacterium parvum on the immune response in guinea pigs. I. Mode of enhancement of the anamnestic response and development of delayted hypersensitivity after treatment with Corynebacterium parvum].

The effect of Corynebacterium parvum (C. parvuum) on the immune response of the guinea pig to ovalbumin varies with the protocol of immunization. The marked effect of C. parvum on the anamnestic response in the rabbit has been confirmed in the guinea pig when immunization is carried out intradermally with a mixture of C. parvum and ovalbumin. When C. parvum is given intravenously or subcutaneously or intradermally but separately from the antigen, this effect is not observed. Whatever the route of injection guinea pigs treated with C. parvum show skin reactions of delayed type hypersensitivity at the site of an intradermal booster when the latter is given at least 27 days after primary immunization.

Animals↗
PubMed1977

[Effect of Corynebacterium parvum on the immune response in guinea pigs. II. Passive transfer of enhanced anamnestic response and delayed hypersensitivity observed after treatment with Corynebacterium parvum].

After intradermal immunization with a mixture of Corynebacterium parvum (C. parvum) and ovalbumin guinea pigs show a markedly increased anamnestic response to an intradermal booster of ovalbumin as compared to controls treated with ovalbumin only. At the same time a reaction of delayed type hypersensitivity is observed in the treated animals, but not in controls. The enhanced anamnestic response as well as the posivitive skin reaction were transferred to strain 2 histocompatible guinea pigs by peripheral blood leukocytes as well as by peritoneal exudate cells. Passive transfer was not obtained after prior irradiation of donor animals.

Animals↗