Send to

Choose Destination
See comment in PubMed Commons below
Infect Immun. 1998 Feb;66(2):878-81.

Expression of beta-defensin genes in bovine alveolar macrophages.

Author information

Immunotoxicology Branch, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA.


Bovine alveolar macrophages (BAM) were examined for the expression of beta-defensins and to determine whether their expression could be upregulated by bacterial lipopolysaccharide (LPS), as observed with beta-defensins expressed in bovine tracheal epithelial cells. Four beta-defensins were expressed constitutively in BAM, with bovine neutrophil beta-defensin (BNBD)-4 and BNBD-5 being the most predominant. This is the first evidence of beta-defensin gene expression in a mature myeloid cell. LPS had no effect on beta-defensin expression in BAM, even though tumor necrosis factor alpha (TNF-alpha) production was induced. Nonbacterial inflammatory particles had little effect on beta-defensin gene expression or TNF-alpha production in BAM. We hypothesize that constitutively expressed beta-defensins of alveolar macrophages may have a role in lung host defense.

[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Support Center