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Safety of Blocking Vascular Adhesion Protein‐1 in Patients with Contact Dermatitis
Author(s) -
Vainio Petri J.,
KortekangasSavolainen Outi,
Mikkola Jari H.,
Jaakkola Kimmo,
Kalimo Kirsti,
Jalkanen Sirpa,
Veromaa Timo
Publication year - 2005
Publication title -
basic and clinical pharmacology and toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.805
H-Index - 90
eISSN - 1742-7843
pISSN - 1742-7835
DOI - 10.1111/j.1742-7843.2005.pto_96605.x
Subject(s) - in vivo , medicine , adhesion , inflammation , downregulation and upregulation , endothelium , cell adhesion molecule , contact dermatitis , blocking antibody , immunology , pharmacology , pathology , antibody , chemistry , biochemistry , biology , allergy , microbiology and biotechnology , organic chemistry , gene
Vascular adhesion protein‐1 mediates leukocyte binding to vascular endothelia and migration to tissues. It is upregulated in inflammatory conditions. We studied the safety of vascular adhesion protein‐1 blockade by a single dose of the mouse monoclonal antibody vepalimomab in patients with nickel‐induced allergic contact dermatitis lesions. Vepalimomab, 0.05–0.50 mg kg −1 was safe and well tolerated. Four of nine patients reported adverse events of mild to moderate intensity. Human antimouse antibodies were detected after infusion in all the patients and they remained above the basal level for at least one month. Vepalimomab dose‐dependently labelled vascular adhesion protein‐1 in the inflamed skin. Luminal upregulation of vascular adhesion protein‐1 on the endothelium upon inflammation was demonstrated for the first time in patients in vivo . Vepalimomab was found on the endothelium up to 24 hr after dosing whilst it was cleared from the circulation with an apparent half‐life of 25–50 min. The results provide in vivo support for the concept of blocking vascular adhesion protein‐1 in human disease states and support previous proposals that vascular adhesion protein‐1 is a potential target molecule for inhibition of inflammatory reactions.