Characterization of Erythromycin and Tetracycline Resistance in Lactobacillus fermentum Strains

Lactic acid bacterial strains: The lactic acid bacterial strains namely, Lactobacillus fermentum 141, Lactobacillus casei 297, Lactobacillus fermentum 156, Lactobacillus rhamnosus 18, Lactobacillus delbruckii

Objective: The objective of the present study was to collect different Lactic acid bacterial strains from culture collection centers and screen their functional probiotic characteristics such as acid tolerance, bile tolerance, antibacterial activity and antibiotic sensitivity for their commercial use. Materials and Methods: Acid and bile tolerence of selected LAB(Lactic acid bacteria) was deter...

Phenotypic and molecular characterization of tetracycline- and erythromycin-resistant strains of Streptococcus pneumoniae.

Sixty-five clinical isolates of Streptococcus pneumoniae, all collected in Italy between 1999 and 2002 and resistant to both tetracycline (MIC, >or=8 microg/ml) and erythromycin (MIC, >or=1 microg/ml), were investigated. Of these strains, 11% were penicillin resistant and 23% were penicillin intermediate. With the use of the erythromycin-clindamycin-rokitamycin triple-disk test, 14 strains were...

Tetracycline and erythromycin resistance among clinical isolates of Branhamella catarrhalis.

We reviewed tetracycline and erythromycin disk diffusion susceptibility of 457 isolates of Branhamella catarrhalis. Four isolates were resistant to tetracycline, with MICs for two available isolates of 16 micrograms/ml. Sixteen isolates were in the moderately susceptible range for erythromycin, with an MIC for one available isolate being greater than 8 micrograms/ml. These are the first tetracy...

Influence of soil use on prevalence of tetracycline, streptomycin, and erythromycin resistance and associated resistance genes.

This study examined differences in antibiotic-resistant soil bacteria and the presence and quantity of resistance genes in soils with a range of management histories. We analyzed four soils from agricultural systems that were amended with manure from animals treated with erythromycin and exposed to streptomycin and/or oxytetracycline, as well as non-manure-amended compost and forest soil. Low c...

Characterization of a small erythromycin resistance plasmid pLFE 1 from the food - isolate Lactobacillus plantarum