Widespread heteroresistance to antibiotics in Lactobacillus species
Rivera-Rodriguez, D. E.; Busby, C.; Cervantes-Barragan, L.; Weiss, D. S.
Show abstract
Lactobacilli are prevalent members of the intestinal and reproductive tract microbiota of humans and other species. They are commonly used in probiotics and various food products due to their beneficial effects on human health. For example, these beneficial microbes are used to treat diarrhea caused by antibiotic therapy and are commonly given during antibiotic treatment. Despite the many studies conducted to understand the beneficial effects of Lactobacilli, less is known about their resistance and heteroresistance to antibiotics. In this study, we evaluated the resistance heterogeneity in eight Lactobacillus species. Our results demonstrate that several Lactobacilli species, including Lactobacillus rhamnosus, are heteroresistant to antibiotics, a recently discovered phenotype commonly seen in multidrug-resistant organisms that cause clinical failures but understudied in commensals and probiotics.
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