Crossref journal-article
Oxford University Press (OUP)
The Journal of Immunology (286)
Abstract

Abstract Human neutrophil peptides (HNPs) are released from granules of neutrophils in response to various activating stimuli and they participate in the killing of bacteria and the stimulation of various inflammatory responses. HNPs also inhibit infectivity of enveloped viruses, including influenza A virus (IAV). In this study, we demonstrate that HNPs increase the uptake of IAV and bacteria by neutrophils. The dimeric HNPs also induced aggregation of IAV and bacterial particles, which may, in part, explain their ability to increase uptake. HNPs did not increase neutrophil respiratory burst responses to IAV. We have recently demonstrated direct interactions of HNPs with surfactant protein D (SP-D), another important effector of innate immunity and antimicrobial host defense. Although HNPs did not alter SP-D-dependent uptake of IAV, they counteracted the ability of SP-D to increase IAV-induced neutrophil H2O2 generation. Our studies reveal previously unappreciated functional effects of HNPs, expand our understanding of the antiviral properties of HNPs, and suggest important interactions between collectins and HNPs in the host response to viruses and bacteria.

Bibliography

Tecle, T., White, M. R., Gantz, D., Crouch, E. C., & Hartshorn, K. L. (2007). Human Neutrophil Defensins Increase Neutrophil Uptake of Influenza A Virus and Bacteria and Modify Virus-Induced Respiratory Burst Responses. The Journal of Immunology, 178(12), 8046–8052.

Authors 5
  1. Tesfaldet Tecle (first)
  2. Mitchell R White (additional)
  3. Don Gantz (additional)
  4. Erika C Crouch (additional)
  5. Kevan L Hartshorn (additional)
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Dates
Type When
Created 11 years, 4 months ago (April 18, 2014, 7:18 p.m.)
Deposited 5 months ago (March 30, 2025, 6:44 p.m.)
Indexed 1 week, 4 days ago (Aug. 21, 2025, 2:02 p.m.)
Issued 18 years, 3 months ago (June 1, 2007)
Published 18 years, 3 months ago (June 1, 2007)
Published Online 18 years, 2 months ago (June 15, 2007)
Published Print 18 years, 2 months ago (June 15, 2007)
Funders 0

None

@article{Tecle_2007, title={Human Neutrophil Defensins Increase Neutrophil Uptake of Influenza A Virus and Bacteria and Modify Virus-Induced Respiratory Burst Responses}, volume={178}, ISSN={1550-6606}, url={http://dx.doi.org/10.4049/jimmunol.178.12.8046}, DOI={10.4049/jimmunol.178.12.8046}, number={12}, journal={The Journal of Immunology}, publisher={Oxford University Press (OUP)}, author={Tecle, Tesfaldet and White, Mitchell R and Gantz, Don and Crouch, Erika C and Hartshorn, Kevan L}, year={2007}, month=jun, pages={8046–8052} }