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Effects of intranasal TNFalpha on granulocyte recruitment and activity in healthy subjects and patients with allergic rhinitis.

Widegren, Henrik LU ; Erjefält, Jonas LU ; Korsgren, Magnus LU ; Andersson, Morgan LU and Greiff, Lennart LU (2008) In Respiratory Research 9(15).
Abstract
BACKGROUND: TNFalpha may contribute to the pathophysiology of airway inflammation. For example, we have recently shown that nasal administration of TNFalpha produces late phase co-appearance of granulocyte and plasma exudation markers on the mucosal surface. The objective of the present study was to examine indices of granulocyte presence and activity in response to intranasal TNFalpha challenge. METHODS: Healthy subjects and patients with allergic rhinitis (examined out of season) were subjected to nasal challenge with TNFalpha (10 microg) in a sham-controlled and crossover design. Nasal lavages were carried out prior to and 24 hours post challenge. Nasal biopsies were obtained post challenge. Nasal lavage fluid levels of myeloperoxidase... (More)
BACKGROUND: TNFalpha may contribute to the pathophysiology of airway inflammation. For example, we have recently shown that nasal administration of TNFalpha produces late phase co-appearance of granulocyte and plasma exudation markers on the mucosal surface. The objective of the present study was to examine indices of granulocyte presence and activity in response to intranasal TNFalpha challenge. METHODS: Healthy subjects and patients with allergic rhinitis (examined out of season) were subjected to nasal challenge with TNFalpha (10 microg) in a sham-controlled and crossover design. Nasal lavages were carried out prior to and 24 hours post challenge. Nasal biopsies were obtained post challenge. Nasal lavage fluid levels of myeloperoxidase (MPO) and eosinophil cationic protein (ECP) were analyzed as indices of neutrophil and eosinophil activity. Moreover, IL-8 and alpha2-macroglobulin were analyzed as markers of pro-inflammatory cytokine production and plasma exudation. Nasal biopsy numbers of neutrophils and eosinophils were monitored. RESULTS: Nasal lavage fluid levels of MPO recorded 24 hours post TNFalpha challenge were increased in healthy subjects (p = 0.0081) and in patients with allergic rhinitis (p = 0.0081) (c.f. sham challenge). Similarly, alpha2-macroglobulin was increased in healthy subjects (p = 0.014) and in patients with allergic rhinitis (p = 0.0034). Lavage fluid levels of ECP and IL-8 were not affected by TNFalpha challenge. TNFalpha increased the numbers of subepithelial neutrophils (p = 0.0021), but not the numbers of eosinophils. CONCLUSION: TNFalpha produces a nasal inflammatory response in humans that is characterised by late phase (i.e., 24 hours post challenge) neutrophil activity and plasma exudation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Respiratory Research
volume
9
issue
15
publisher
BioMed Central
external identifiers
  • pmid:18234086
  • wos:000253353700001
  • scopus:52949123471
ISSN
1465-9921
DOI
10.1186/1465-9921-9-15
language
English
LU publication?
yes
id
cf07ba97-ecac-41dd-8d5e-c4500412a839 (old id 1042481)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/18234086?dopt=Abstract
date added to LUP
2008-03-06 14:10:46
date last changed
2017-01-01 04:58:59
@article{cf07ba97-ecac-41dd-8d5e-c4500412a839,
  abstract     = {BACKGROUND: TNFalpha may contribute to the pathophysiology of airway inflammation. For example, we have recently shown that nasal administration of TNFalpha produces late phase co-appearance of granulocyte and plasma exudation markers on the mucosal surface. The objective of the present study was to examine indices of granulocyte presence and activity in response to intranasal TNFalpha challenge. METHODS: Healthy subjects and patients with allergic rhinitis (examined out of season) were subjected to nasal challenge with TNFalpha (10 microg) in a sham-controlled and crossover design. Nasal lavages were carried out prior to and 24 hours post challenge. Nasal biopsies were obtained post challenge. Nasal lavage fluid levels of myeloperoxidase (MPO) and eosinophil cationic protein (ECP) were analyzed as indices of neutrophil and eosinophil activity. Moreover, IL-8 and alpha2-macroglobulin were analyzed as markers of pro-inflammatory cytokine production and plasma exudation. Nasal biopsy numbers of neutrophils and eosinophils were monitored. RESULTS: Nasal lavage fluid levels of MPO recorded 24 hours post TNFalpha challenge were increased in healthy subjects (p = 0.0081) and in patients with allergic rhinitis (p = 0.0081) (c.f. sham challenge). Similarly, alpha2-macroglobulin was increased in healthy subjects (p = 0.014) and in patients with allergic rhinitis (p = 0.0034). Lavage fluid levels of ECP and IL-8 were not affected by TNFalpha challenge. TNFalpha increased the numbers of subepithelial neutrophils (p = 0.0021), but not the numbers of eosinophils. CONCLUSION: TNFalpha produces a nasal inflammatory response in humans that is characterised by late phase (i.e., 24 hours post challenge) neutrophil activity and plasma exudation.},
  articleno    = {8 pp},
  author       = {Widegren, Henrik and Erjefält, Jonas and Korsgren, Magnus and Andersson, Morgan and Greiff, Lennart},
  issn         = {1465-9921},
  language     = {eng},
  number       = {15},
  publisher    = {BioMed Central},
  series       = {Respiratory Research},
  title        = {Effects of intranasal TNFalpha on granulocyte recruitment and activity in healthy subjects and patients with allergic rhinitis.},
  url          = {http://dx.doi.org/10.1186/1465-9921-9-15},
  volume       = {9},
  year         = {2008},
}