Volume 6 Supplement 1

2nd WAO International Scientific Conference (WISC 2012), Abstracts

Open Access

Mechanisims of asthma and allergic disease – 1079. Evidence of platelet activation in asthmatic patients

  • Hyun Jung Jin1,
  • Nami Shrestha Palikhe2,
  • Ji Won Lee3,
  • Mi-Ae Kim4,
  • Yoo Seob Shin5,
  • Young Min Ye5 and
  • Hae-Sim Park5
World Allergy Organization Journal20136(Suppl 1):P75

DOI: 10.1186/1939-4551-6-S1-P75

Published: 23 April 2013


Animal models of allergic asthma indicate that intravascular platelet activation is essentail for the development of allergen induced chronic airway inflammation. P2Y12, the third CysLT receptor, is expressed on platelets and has been an important pathophysiological role in LTE4 mediated pulmonary inflammation. We investigated platelet activation status in asthmatic patients compared to controls.


Fifty asthmatic patients and 20 healthy controls were enrolled from Ajou University Hospital, Suwon, Korea Surface expression of P-selectin and P2Y12 on platelets were determined by flowc ytometry. Plasma soluble P-selectin level was measured by ELISA. The asthmatic subjects were classified into two groups depending on high (>mean + 2 SD of controls) and low expression of P2Y12.


The expressions of platelet P-selectin, P2Y12 and soluble p-selectin level were significantly higher in asthmatic patients than in controls, (p<0.001, p=0.001, p<0.001, respectively). No significant correlations were found between clinical parameters and platelet activation markers. Expressions of P2Y12 on platelet did not increase significantly after the treatment with LTE4 or aspirin. Higher expression group of P2Y12 had significantly higher peripheral eosinophil count (P=0.021).


Platelet activation may play a role in asthma pathogenesis. A possible interaction between platelet and eosinophil via P2Y12 was suggested.

Authors’ Affiliations

Department of Internal Medicine, College of Medicine, Yeungnam University
Pulmonary Research Group, Department of Medicine, University of Alberta
St. Marks School
Department of Allergy & Clinical Immunology, Ajou University School of Medicine
Allergy and Clinical Immunology, Ajou University Hospital


© Jin et al; licensee BioMed Central Ltd. 2013

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.