Abundant human beta-defensin-1 expression in milk and mammary gland epithelium.

Jia, H P; Starner, T; Ackermann, M; Kirby, P; Tack, B F; McCray, P B · J Pediatr · 2001

basic_science · Level V

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Abstract

Human beta-defensin-1 (HBD-1) was detected in breast milk in concentrations of approximately 1 to 10 microg/mL. Breast tissue during lactation showed HBD-1 expression in mammary gland epithelia and within luminal secretions. The peptide demonstrated antimicrobial activity against Escherichia coli. HBD-1 may augment neonatal host defenses through antimicrobial effects or prime the adaptive immune system at mucosal surfaces.

Medical subject headings