• Antibiotic Residues Detected in Commercial Cow’s Milk
    Author:
    Aylin Memili (1) and Erdogan Memili (2)
    Focus:
    , , ,

    18 March 2015 6:54 PM |

    Antibiotics are oftentimes used to treat mastitis (infection of the mammary gland) in dairy cows. Regulations require that milk from these cows be discarded until the infection has cleared and antibiotic residues are no longer detectable in the cow's milk. These regulations are in place to protect consumers and to help prevent the rise of antibiotic resistant bacteria. In this study, the authors test milk samples from 10 milk suppliers in the Greensboro, NC to see if they contain detectable levels of antibiotic residues.

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  • Characterization of a UPEC degS mutant in vitro and in vivo
    Author:
    India C. Bradley and Elizabeth S. Danka
    Focus:
    , , ,

    16 March 2015 12:48 PM |

    DegS is an integral inner membrane protein in E. coli that helps break down misfolded proteins. When it is mutated, there is a large increase in the production of outer membrane vesicles (OMVs), which are thought to play a role in pathogenesis. This study used mutant strains of uropathogenic E. coli (UPEC) to characterize the role of DegS and OMVs on UPEC virulence.

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  • Dispersing Agents Prevent Negative Impact of Oil on Uptake of Zinc by Duckweed (Lemna minor)
    Author:
    Chase D. Latour, Albert K. Urazaev, and Amber L. Pond
    Focus:
    , , ,

    16 March 2015 12:19 PM |

    Duckweed plays an important role in its aquatic environment by removing pollutants, such as zinc, from the water. In this study, the authors demonstrate that uptake of zinc by duckweed is inhibited by the presence of oil in the water, but this effect can be reversed with the addition of a dispersing agent.

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