Generic placeholder image

Current Protein & Peptide Science


ISSN (Print): 1389-2037
ISSN (Online): 1875-5550

Antimicrobial Peptides in Burns and Wounds

Author(s): Satyanarayan Bhat and Stephen Milner

Volume 8, Issue 5, 2007

Page: [506 - 520] Pages: 15

DOI: 10.2174/138920307782411428

Price: $65


Burn-induced immunosuppression not only increases susceptibility to infection, but also predisposes burn patients to related adverse sequelae, including systemic inflammatory response syndrome and sepsis. Although burn-related immunosuppression is not fully understood, it is characterized by decreased T- and B-lymphocyte function and by impaired functions of circulating leukocytes and complement. Alterations in defensins, a family of cationic, naturally occurring antimicrobial peptides, may underlie these immune deficiency patterns. Defensins are considered important components of the innate immune system, as they inhibit bacterial, fungal, and viral colonization. They also chemoattract immature dendritic cells and T lymphocytes, recruit neutrophils, macrophages, and monocytes, modulate complement and adjuvant activity, and promote inflammation and wound healing. Infectious states are associated with upregulation of circulating defensins, which suggests an underlying antimicrobial role. In addition, data from our laboratory demonstrated diminished levels of certain defensins in burned tissue. The inference is that decreased defensin levels in burn injury may facilitate infection and subsequent sepsis. It may also alter functions of T- and B-lymphocytes, neutrophils, macrophages, and complement, thereby contributing to the pathophysiology of burn-related systemic inflammatory responses. This article is a comprehensive review on the role of antimicrobial peptides in burns and wounds.

Keywords: proinflammatory cytokines, immunosuppression, human defensins, thermal injury, T-cell proliferation, Macrophages

« Previous

Rights & Permissions Print Cite
© 2024 Bentham Science Publishers | Privacy Policy