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Staphylococcal Biofilms in Atopic Dermatitis

  • Tammy Gonzalez
  • Jocelyn M. Biagini Myers
  • Andrew B. Herr
  • Gurjit K. Khurana Hershey
Basic and Applied Science (I Lewkowich, Section Editor)
Part of the following topical collections:
  1. Topical Collection on Basic and Applied Science

Abstract

Purpose of Review

Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disorder that is a major public health burden worldwide. AD lesions are often colonized by Staphylococcus aureus and Staphylococcus epidermidis. An important aspect of Staphylococcus spp. is their propensity to form biofilms, adhesive surface-attached colonies that become highly resistant to antibiotics and immune responses, and recent studies have found that clinical isolates colonizing AD skin are often biofilm-positive. Biofilm formation results in complex bacterial communities that have unique effects on keratinocytes and host immunity. This review will summarize recent studies exploring the role of staphyloccocal biofilms in atopic dermatitis and the implications for treatment.

Recent Findings

Recent studies suggest an important role for biofilms in the pathogenesis of numerous dermatologic diseases including AD. S. aureus biofilms have been found to colonize the eccrine ducts of AD skin, and these biofilms influence secretion of keratinocyte cytokines and trigger differentiation and apoptosis of keratinocytes. These activities may act to disrupt barrier function and promote disease pathogenesis as well as allergen sensitization.

Summary

Formation of biofilm is a successful strategy that protects the bacteria from environmental danger, antibiotics, and phagocytosis, enabling chronic persistence in the host. An increasing number of S. aureus skin isolates are resistant to conventional antibiotics, and staphylococcal biofilm communities are prevalent on the skin of individuals with AD. Staphylococcal colonization of the skin impacts skin barrier function and plays multiple important roles in AD pathogenesis.

Keywords

Atopic dermatitis Biofilm Staphylococci Microbiome Barrier function Epidermis 

Notes

Acknowledgments

Research by the authors on atopic dermatitis, host epithelial responses, and staphylococcal biofilms has been supported by NIH grants U19 AI070235 (to GKH, JBM, and ABH) and R01 GM094363 (to ABH). We gratefully acknowledge the editorial assistance of Angela Sadler.

Compliance with Ethical Standards

Conflict of Interest

Dr. Herr reports the following disclosures: Advisory board member for Hoth Therapeutics, Inc.; Owns equity in Chelexa BioSciences, LLC; Co-inventor on patent EP23106821 licensed to Chelexa BioSciences, LLC; and Co-inventor on patent application US 20140308326 A1. Ms. Gonzalez, Dr. Biagini Myers, and Dr. Khurana Hershey declare no conflicts of interest relevant to this manuscript.

Human and Animal Rights and Informed Consent

This article does not contain any studies with human or animal subjects performed by any of the authors.

References

Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.Immunology Graduate ProgramCincinnati Children’s Hospital Medical CenterCincinnatiUSA
  2. 2.Division of Asthma ResearchCincinnati Children’s Hospital Medical CenterCincinnatiUSA
  3. 3.Division of ImmunobiologyCincinnati Children’s Hospital Medical CenterCincinnatiUSA
  4. 4.Division of Infectious DiseasesCincinnati Children’s Hospital Medical CenterCincinnatiUSA

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