Immunomodulation by alpha(1)-proteinase inhibitor: lack of chemotactic effects of recombinant human alpha(1)-proteinase inhibitor from yeast on human peripheral blood granulocytes

• Authors: B. Mosheimer , R. Alzner , C.J. Wiedermann
• Languages of publication: EN

Abstracts

EN

Introduction: Recombinant alpha(1)-proteinase inhibitor, clinically developed for inhalative augmentation therapy in patients with alpha(1)-proteinase inhibitor deficiency or cystic fibrosis, may directly contribute to leukocyte accumulation as it may function as a chemoattractant. The migratory effects of yeast-derived human recombinant alpha(1)-proteinase inhibitor on human peripheral blood neutrophils and eosinophils were therefore tested in vitro. Materials and Methods: Human peripheral blood leukocytes were prepared from forearm venous blood and tested for migration toward various preparations of yeast-derived recombinant alpha(1)-proteinase inhibitor in modified Boyden-chamber micropore filter assays. Results: No direct effects of yeast-derived recombinant human alpha(1)-proteinase inhibitor on in vitro migration of isolated neutrophils or eosinophils were seen. Conclusions: The lack of direct chemotactic effects of recombinant human alpha(1)-proteinase inhibitor despite anti-inflammatory effects in other biological activities of leukocytes may contribute to the preserved antibacterial defense mechanisms observed in patients under experimental augmentation therapy with inhaled alpha(1)-proteinase inhibitor.

Keywords

EN

ANTIPROTEINASE; CHEMOTAXIS; EMPHYSEMA; EOSINOPHIL; NEUTROPHIL

Discipline

• IMMUNOLOGY: IMMUNOLOGY

• Journal: Archivum Immunologiae et Therapiae Experimentalis
• Year: 2007
• Volume: 55
• Issue: 6
• Pages: 399-403

Contributors

author

B. Mosheimer

author

R. Alzner

author

C.J. Wiedermann

• Document Type: ARTICLE
• Publication order reference: Christian J. Wiedermann, Department of Medicine, Central Hospital of Bolzano, L. Bohler Street 5, 39100 Bolzano (BZ), Italy