Inducibility of HBD-2 in acute burns and chronic conditions of the lung

S. M. Milner, A. Cole, M. R. Ortega, M. H. Bakir, S. Gulati, S. Bhat, T. Ganz

Research output: Contribution to journalArticlepeer-review

Abstract

The respiratory tract produces a number of molecules that act in the first line of host defense to protect against pathogenic colonization and tissue invasion. Most of the innate antimicrobial activity can be attributed to airway fluid proteins, such as lysozyme, lactoferrin, and secretory leukoproteinase inhibitor, and peptides, such as defensins. Human beta-defensins are cationic antimicrobial peptides with broad and potent microbicidal activity that have been shown to play a role in protecting the healthy lung from infection. To determine the effect of thermal injury on the production of the inducible beta-defensin, human β-defensin-2 (HBD-2), we measured the concentration of HBD-2 by Western blot analysis in bronchoalveolar lavage samples from the lungs of burned patients with and without inhalation injury. Our data demonstrates an increased amount of HBD-2 in the pulmonary airways with thermal injury compared to normal lung. A further substantial increase in levels was noted in chronic lung conditions.

Original languageEnglish (US)
Pages (from-to)553-555
Number of pages3
JournalBurns
Volume29
Issue number6
DOIs
StatePublished - Sep 2003

Keywords

  • Antimicrobial peptides
  • Burns
  • Defensins
  • Inhalation injury
  • Pulmonary infections

ASJC Scopus subject areas

  • Surgery
  • Emergency Medicine
  • Critical Care and Intensive Care Medicine

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