Abstract
Introduction
The aim of this study was to investigate the in situ pulmonary endothelial activation in lung lesions of granulomatosis with polyangiitis (GPA) and systemic sclerosis (SScl).
Methods
We examined the endothelial expression of ICAM-1, VCAM-1, and E-selectin using immunohistochemistry on formalin-fixed, paraffin-embedded sections of lung lesions of GPA, interstitial lung disease associated with SScl and controls.
Results
A significantly enhanced expression of ICAM-1 and E-selectin was observed in GPA and SScl pulmonary endothelium compared to controls. VCAM-1 was more pronouncedly expressed in GPA compared to SScl.
Conclusion
These observations are an evidence of in situ pulmonary vascular endothelial activation in lesions of GPA and SScl, adding information to the pathogenic knowledge of both diseases.
References
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Acknowledgments
We are particularly grateful for the assistance given by Esmeralda Miristeni Eher and Sandra de Morais Fernezlian with the immunohistochemical procedures. We also wish to acknowledge the help provided by Maristela Peres Rangel and Bruno Guedes Baldi in data acquisition and data analysis, respectively.
Conflict of interest
The authors declare no conflict of interest.
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Kawano-Dourado, L., Ab’Saber, A.M., Capelozzi, V.L. et al. In Situ Evidence of Pulmonary Endothelial Activation in Patients with Granulomatosis with Polyangiitis and Systemic Sclerosis. Lung 193, 355–359 (2015). https://doi.org/10.1007/s00408-015-9718-6
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DOI: https://doi.org/10.1007/s00408-015-9718-6