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Related Concept Videos

Biofilms01:29

Biofilms

Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
Bacterial Signaling01:30

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...

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Oral Biofilm Formation on Different Materials for Dental Implants
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Published on: June 24, 2018

Microbial biofilms and breast tissue expanders.

Melissa J Karau1, Kerryl E Greenwood-Quaintance, Suzannah M Schmidt

  • 1Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, 200 First Street S.W., Rochester, MN 55905, USA.

Biomed Research International
|August 20, 2013
PubMed
Summary
This summary is machine-generated.

The vortexing-sonication technique effectively detects infected breast tissue expanders. However, it also revealed asymptomatic colonization by skin flora, primarily Propionibacterium species, in 16% of devices.

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Area of Science:

  • Microbiology
  • Medical Devices
  • Surgical Infections

Background:

  • Biofilm bacteria pose diagnostic challenges, particularly on prosthetic materials.
  • Previous development of vortexing-sonication for prosthetic joint infection detection.
  • Need for reliable methods to diagnose infection and assess colonization in breast tissue expanders.

Purpose of the Study:

  • To evaluate the vortexing-sonication technique for diagnosing infected breast tissue expanders.
  • To assess the prevalence of asymptomatic colonization in breast tissue expanders.

Main Methods:

  • A cohort of 328 breast tissue expanders was studied between April 2008 and December 2011.
  • The vortexing-sonication technique was applied to detect bacterial presence.
  • Cultures were analyzed to identify bacterial species and assess infection or colonization.

Main Results:

  • Six of seven clinically infected breast tissue expanders (85.7%) showed positive cultures.
  • Fifty-two of 321 breast tissue expanders without clinical infection (16.2%) also had positive cultures.
  • Common isolates from asymptomatic expanders included Propionibacterium species and coagulase-negative staphylococci.

Conclusions:

  • Vortexing-sonication is a viable method for detecting infection in breast tissue expanders.
  • A significant percentage (16.2%) of breast tissue expanders may be asymptomatically colonized by skin flora.
  • Propionibacterium species are the most common colonizers of breast tissue expanders.