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The effect of immediate-hypersensitivity reactions on the level of SLPI, granulocyte elastase, α1-antitrypsin, and albumin in nasal secretions, by the method of unilateral antigen challenge

Westin, U. LU ; Lundberg, Eva; Wihl, J. Å LU and Ohlsson, Kjell (1999) In Allergy: European Journal of Allergy and Clinical Immunology 54(8). p.857-864
Abstract

Background: The aim of this paper was to investigate the role of SLPI in patients with allergic rhinitis. From this point of view, we also examined leukocyte elastase, α1-antitrypsin, and albumin. SLPI is an inhibitor of serine proteases such as leukocyte elastase, cathepsin G, and mast-cell chymase. Since chymase is considered to participate in mast-cell degranulation and histamine release, SLPI might act as a regulator of allergic reactions. Recent interest has been focused on leukocytes and allergy. Since SLPI is a strong inhibitor of leukocyte elastase, we also focused on the function of elastase in allergic rhinitis. Methods: We used the method of nasal lavage after unilateral nasal antigen challenge in atopic and... (More)

Background: The aim of this paper was to investigate the role of SLPI in patients with allergic rhinitis. From this point of view, we also examined leukocyte elastase, α1-antitrypsin, and albumin. SLPI is an inhibitor of serine proteases such as leukocyte elastase, cathepsin G, and mast-cell chymase. Since chymase is considered to participate in mast-cell degranulation and histamine release, SLPI might act as a regulator of allergic reactions. Recent interest has been focused on leukocytes and allergy. Since SLPI is a strong inhibitor of leukocyte elastase, we also focused on the function of elastase in allergic rhinitis. Methods: We used the method of nasal lavage after unilateral nasal antigen challenge in atopic and healthy subjects. The ELISA quantified SLPI and elastase. Albumin and α1-antitrypsin were quantified by electroimmunoassay. Gel filtration was used to separate native SLPI from its complex with elastase. Results: There was a higher level of SLPI in lavage fluid from healthy subjects than from atopic patients. SLPI was increased on the contralateral side in atopic subjects after allergen challenge. The absence of increase in SLPI on the challenged side may be attributed to the increase in elastase and its binding to SLPI, which might have an effect on the immunoreactivity and interfere with the ELISA. It may then be assumed that there is an augmentation of SLPI on the challenged side as well. No increase was seen in healthy subjects. There was a higher concentration of elastase, α1-antitrypsin, and albumin before antigen challenge in atopic patients outside the pollen season than in healthy subjects. As expected, an increase was also seen in the challenged side exclusively in atopic subjects. Conclusions: The lower concentration of SLPI in nasal lavage fluid among the atopic patients than the healthy subjects indicates damaged mucosa. Neural reflexes are involved in SLPI release since there was an increase even in the contralateral nostril. A higher level of elastase and albumin before allergen challenge suggests chronic inflammation in nasal mucosa outside the pollen season. Leukocyte recruitment takes place in response to IgE-mediated reactions, which are reflected in an increase in elastase in response to allergen challenge.

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author
organization
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Contribution to journal
publication status
published
subject
keywords
α-Antitrypsin, Allergic rhinitis, Elastase, Nasal lavage, SLPI
in
Allergy: European Journal of Allergy and Clinical Immunology
volume
54
issue
8
pages
857 - 864
publisher
Wiley-Blackwell
external identifiers
  • scopus:0032779545
ISSN
0105-4538
DOI
10.1034/j.1398-9995.1999.00938.x
language
English
LU publication?
yes
id
503020d2-b094-426f-b03f-0454b1f24984
date added to LUP
2017-02-13 14:36:39
date last changed
2017-10-01 05:30:11
@article{503020d2-b094-426f-b03f-0454b1f24984,
  abstract     = {<p>Background: The aim of this paper was to investigate the role of SLPI in patients with allergic rhinitis. From this point of view, we also examined leukocyte elastase, α<sub>1</sub>-antitrypsin, and albumin. SLPI is an inhibitor of serine proteases such as leukocyte elastase, cathepsin G, and mast-cell chymase. Since chymase is considered to participate in mast-cell degranulation and histamine release, SLPI might act as a regulator of allergic reactions. Recent interest has been focused on leukocytes and allergy. Since SLPI is a strong inhibitor of leukocyte elastase, we also focused on the function of elastase in allergic rhinitis. Methods: We used the method of nasal lavage after unilateral nasal antigen challenge in atopic and healthy subjects. The ELISA quantified SLPI and elastase. Albumin and α<sub>1</sub>-antitrypsin were quantified by electroimmunoassay. Gel filtration was used to separate native SLPI from its complex with elastase. Results: There was a higher level of SLPI in lavage fluid from healthy subjects than from atopic patients. SLPI was increased on the contralateral side in atopic subjects after allergen challenge. The absence of increase in SLPI on the challenged side may be attributed to the increase in elastase and its binding to SLPI, which might have an effect on the immunoreactivity and interfere with the ELISA. It may then be assumed that there is an augmentation of SLPI on the challenged side as well. No increase was seen in healthy subjects. There was a higher concentration of elastase, α<sub>1</sub>-antitrypsin, and albumin before antigen challenge in atopic patients outside the pollen season than in healthy subjects. As expected, an increase was also seen in the challenged side exclusively in atopic subjects. Conclusions: The lower concentration of SLPI in nasal lavage fluid among the atopic patients than the healthy subjects indicates damaged mucosa. Neural reflexes are involved in SLPI release since there was an increase even in the contralateral nostril. A higher level of elastase and albumin before allergen challenge suggests chronic inflammation in nasal mucosa outside the pollen season. Leukocyte recruitment takes place in response to IgE-mediated reactions, which are reflected in an increase in elastase in response to allergen challenge.</p>},
  author       = {Westin, U. and Lundberg, Eva and Wihl, J. Å and Ohlsson, Kjell},
  issn         = {0105-4538},
  keyword      = {α-Antitrypsin,Allergic rhinitis,Elastase,Nasal lavage,SLPI},
  language     = {eng},
  number       = {8},
  pages        = {857--864},
  publisher    = {Wiley-Blackwell},
  series       = {Allergy: European Journal of Allergy and Clinical Immunology},
  title        = {The effect of immediate-hypersensitivity reactions on the level of SLPI, granulocyte elastase, α1-antitrypsin, and albumin in nasal secretions, by the method of unilateral antigen challenge},
  url          = {http://dx.doi.org/10.1034/j.1398-9995.1999.00938.x},
  volume       = {54},
  year         = {1999},
}