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2003 | 51 | 4 | 259-265

Article title

Time-dependent observations of secretion marker levels in nasal secretion after histamine and methacholine provocations

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Nasal provocation tests with histamine and methacholine were carried out in 25 healthy men on an effort to assess the dynamic changes of albumin, total IgA, secretory IgA and lactoferrin concentrations in the nasal secretion. The trials were performed with 0.5, 1, and 4 mg of histamine and 8, 16, 32 mg of methacholine. Each dose of histamine or methacholine was sprayed into a nose every second day, and with two days interval between two provocating agents. The nasal secretions were collected after saline spraying only forming baseline group and after 3, 10 and 15 minutes of the challenge agent administration. The baseline levels presented the following values: for albumin 257? 230 mug/ml, secretory IgA 608 ? 379 mug/ml, total IgA 1025 ? 423 mug/ml, and lactoferrin 213 ? 156 mug/ml. The increase of albumin level after nasal provocation, particularly significant after histamine administration (to 3713 ? 2311 mug/ml), indicates the incessant protein plasma leaking from the blood circulation to the nasal secretion. After administration of both provocating agents there was the significant gradual decrease of secretory IgA level, even below the baseline value. After the 2nd and the 3rd doses of methacholine and histamine spraying the concentration of secretory IgA decreased 2-3 times and was found to be 200-300 mug/ml, respectively. Also, lactoferrin concentration values decreased gradually after the 2nd and 3rd doses of methacholine and histamine to level close the baseline value. These observations suggest time and dose dependent, a non-specific dysfunction of local immunity response after nasal provocations.





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M. Pupek, Department of Chemistry and Immunochemistry, Wroclaw Medical University, Bujwida 44a, 50-345 Wroclaw, Poland


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