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Peripheral blood TSLP (thymic stromal lymphopoietin) in children as a biomarker?

Renata Vrsalovic, Peter Korosec, Urska Bidovec Stojkovic, Iva Mihatov Stefanovic, Biserka Cicak, Ivan Samija, Sabina Skrgat
European Respiratory Journal 2021 58: PA3071; DOI: 10.1183/13993003.congress-2021.PA3071
Renata Vrsalovic
1Department of Pediatrics, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
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  • For correspondence: rvrsalovic@gmail.com
Peter Korosec
2University Hospital of Respiratory and Allergic Diseases, Golnik, Slovenia
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Urska Bidovec Stojkovic
2University Hospital of Respiratory and Allergic Diseases, Golnik, Slovenia
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Iva Mihatov Stefanovic
1Department of Pediatrics, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
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Biserka Cicak
1Department of Pediatrics, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
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Ivan Samija
3Sestre milosrdnice University Hospital Center, Zagreb, Croatia
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Sabina Skrgat
4Pulmonary Department, University Medical Centre Ljubljana, Medical faculty, University of Ljubljana, Golnik, Ljubljana, Slovenia
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Abstract

Introduction: There is substantial evidence that alarmin TSLP plays one of the key roles in driving type 2 inflammation and it is also thought that it has a role in neutrophilic, type 2-low airway inflammation. Much less is known about the role of alarmins in type 2-low asthma and its role in the heterogeneity of inflammation in acute asthma exacerbations.

Aims and objectives: The aim of the present study was to find out whether there are differences of TSLP concentrations in peripheral blood of children in different asthma phenotypes and healthy children and to find out whether there is a dynamic in TSLP during an asthma exacerbation.

Methods: We checked TSLP concentrations in peripheral blood in 207 children with asthma and 100 healthy controls (ages 1-13 years). In 23 children we measured TSLP also during an acute asthma exacerbation. Asthma phenotypes were defined as allergic (132 patients), nonallergic (30 patients) and virus infection induced (45 patients).

Results: There was statistically significant (p= 0.0035) difference in TSLP concentration among children with asthma (median; 486 pg/ml, IQR;117-1053) and healthy controls (median 302,5 pg/ml, IQR; 114,5-639,5). We did not find any significant differences in TSLP concentration among different asthma phenotypes (p=0.81) and no dynamic during asthma exacerbation (p=0.7).

Conclusion: Children with asthma have a higher concentration of TSLP in peripheral blood baseline compared to healthy controls. TSLP does not seem to be a biomarker of disease exacerbation in children. Different asthma phenotypes in children have similar TSLP concentration profile in peripheral blood and does not seem to be a useful biomarker in asthma phenotyping in children.

  • Asthma
  • Asthma - mechanism
  • Children

Footnotes

Cite this article as: European Respiratory Journal 2021; 58: Suppl. 65, PA3071.

This abstract was presented at the 2021 ERS International Congress, in session “Prediction of exacerbations in patients with COPD”.

This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).

  • Copyright ©the authors 2021
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Peripheral blood TSLP (thymic stromal lymphopoietin) in children as a biomarker?
Renata Vrsalovic, Peter Korosec, Urska Bidovec Stojkovic, Iva Mihatov Stefanovic, Biserka Cicak, Ivan Samija, Sabina Skrgat
European Respiratory Journal Sep 2021, 58 (suppl 65) PA3071; DOI: 10.1183/13993003.congress-2021.PA3071

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Peripheral blood TSLP (thymic stromal lymphopoietin) in children as a biomarker?
Renata Vrsalovic, Peter Korosec, Urska Bidovec Stojkovic, Iva Mihatov Stefanovic, Biserka Cicak, Ivan Samija, Sabina Skrgat
European Respiratory Journal Sep 2021, 58 (suppl 65) PA3071; DOI: 10.1183/13993003.congress-2021.PA3071
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