DOI: 10.1111/j.1365-2222.1993.tb01794.x. The determinants of airway hyperresponsiveness to hypertonic saline in atopic asthma <i>in vivo</i>. Relationship with sub‐populations of peripheral blood leucocytes

The determinants of airway hyperresponsiveness to hypertonic saline in atopic asthma in vivo. Relationship with sub‐populations of peripheral blood leucocytes

10.1111/j.1365-2222.1993.tb01794.x

Crossref journal-article

Wiley

Clinical & Experimental Allergy (311)

Abstract

SummaryIn patients with asthma there is only a weak relationship between airway responsiveness to hypertonic saline and methacholine. We tested the hypothesis that airway responsiveness to hypertonic saline in asthma is related to the presence and activity of inflammatory cells in the peripheral blood. Nineteen atopic asthmatic adults (19–28 yr; PC20 0.06–12.4 mg/ml), not receiving steroid treatment, entered a methacholine and hypertonic saline period in random order. Dose‐response curves to doubling doses of inhaled methacholine (0.03–256 mg/ml) or hypertonic saline (0.9–14.4% NaCl) were obtained twice in each period, 7 days apart. The response was measured by FEV1 Methacholine responsiveness was measured by PC20 METH of FEV1 and responsiveness to hypertonic saline was expressed as the percentage fall in FEV, after 14.4% NaCl (HYP14.4%). Peripheral blood was collected before the second challenge test of each period. Apart from leucocyte counts and serum eosinophilic cationic protein (ECP) level, sub‐sets of lymphocytes (CD4 +/CD3 +, CD8 +/CD3 +, CD25 +/CD4 + and VLA‐1 +/CD4 +) were determined using flowcytornetry. HYP14.4% was positively correlated to basophil, eosinophil and monocyte counts (r = 0.64, 0.54 and 0.44, respectively; P< 0.05). The basophil count remained positively related to HYP 14.4% when PC20 METH or FEV1%pred were entered in multiple linear regression analyses (r = 0.66 and 0.75, respectively; P 0.05). There were no significant relationships between HYP14.4% or PC20 METH on one side and ECP level or T‐lymphocyte subsets on the other (P> 0.05). We conclude that airway responsiveness to hypertonic saline is positively related to the number of peripheral blood basophils, eosinophils and monocytes. Basophil count is an independent correlate of responsiveness to hypertonic saline, after correction for mcthacholine responsiveness and baseline lung function. This fits in with active involvement of basophils in airway narrowing to hypertonic saline in vivo.

Bibliography

SONT, J. K., BOOMS, P., BEL, E. H., BROUCKE, J. P. V., & STERK, P. J. (1993). The determinants of airway hyperresponsiveness to hypertonic saline in atopic asthma in vivo. Relationship with subâpopulations of peripheral blood leucocytes. Clinical & Experimental Allergy, 23(8), 678â688. Portico.

Authors 5

J. K. SONT (first)
P. BOOMS (additional)
E. H. BEL (additional)
J. P. VANDEN BROUCKE (additional)
P. J. STERK (additional)

References 45 Referenced 12

10.1016/0091-6749(91)90408-G
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Dates

Type	When
Created	19 years, 4 months ago (April 28, 2006, 10:11 a.m.)
Deposited	1 year, 11 months ago (Sept. 28, 2023, 2:16 a.m.)
Indexed	1 year, 10 months ago (Oct. 13, 2023, 2:29 a.m.)
Issued	32 years, 1 month ago (Aug. 1, 1993)
Published	32 years, 1 month ago (Aug. 1, 1993)
Published Online	19 years, 4 months ago (April 27, 2006)
Published Print	32 years, 1 month ago (Aug. 1, 1993)

Funders 0

None

BibTeX

@article{SONT_1993, title={The determinants of airway hyperresponsiveness to hypertonic saline in atopic asthma in vivo. Relationship with sub‐populations of peripheral blood leucocytes}, volume={23}, ISSN={1365-2222}, url={http://dx.doi.org/10.1111/j.1365-2222.1993.tb01794.x}, DOI={10.1111/j.1365-2222.1993.tb01794.x}, number={8}, journal={Clinical & Experimental Allergy}, publisher={Wiley}, author={SONT, J. K. and BOOMS, P. and BEL, E. H. and BROUCKE, J. P. VANDEN and STERK, P. J.}, year={1993}, month=aug, pages={678–688} }

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