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Table 1 Stimuli, potentiator or inhibitors of iBK formation

From: Increased fibrinolysis-induced bradykinin formation in hereditary angioedema confirmed using stored plasma and biotechnological inhibitors

Stimulus

Final concentration in plasma

Site of action

Source

Recombinant active KLK-1

10 nM

Kininogen cleavage, mostly low molecular weight form

DiaMedica, Inc.

Pacific Hemostasis Kontact-APTT

2% v/v without the calcium supplement

Particulate material that triggers the contact system

ThermoFisher Scientific

Recombinant tPA (alteplase, Cathflow)

169 nM

Plasminogen activation

Roche

Enalaprilat

130 nM

ACE inhibition

Kemprotec Ltd. (Maltby, UK)

Lanadelumab (DX-2930), humanized monoclonal antibody

500 nM

Inhibitor of plasma kallikrein [3]

Shire Intl. GmbH

M293-D02, monoclonal antibody

1 μM

Anti-lanadelumab neutralizing antibody [15]

Shire Intl. GmbH

DX-1000, recombinant Kunitz-type inhibitor

1 μM

Inhibitor of plasmin [2]

Shire Intl. GmbH