Thromb Haemost 1988; 59(02): 151-161
DOI: 10.1055/s-0038-1642745
Original Articles
Schattauer GmbH Stuttgart

Detection and Quantitation of Cleaved and Uncleaved High Molecular Weight Kininogen in Plasma by Ligand Blotting with Radiolabeled Plasma Prekallikrein or Factor XI

Authors

  • Bernhard Lämmle

    *   Coagulation Laboratory, Central Hematology Laboratory, University of Bern, Inselspital, 3010 Bern, Switzerland
  • Bruce L Zuraw

    �   The Department of Basic and Clinical Research, Scripps Clinic and Research Foundation, La Jolla, CA, USA
  • Mary Jo Heeb

    The Department of Immunology, Scripps Clinic and Research Foundation, La Jolla, CA, USA
  • Hans Peter Schwarz

    +   Department of Medicine, University of Vienna, Vienna, Austria
  • Mauro Berrettini

    The Department of Immunology, Scripps Clinic and Research Foundation, La Jolla, CA, USA
  • John G Curd

    �   The Department of Basic and Clinical Research, Scripps Clinic and Research Foundation, La Jolla, CA, USA
  • John H Griffin

    The Department of Immunology, Scripps Clinic and Research Foundation, La Jolla, CA, USA
Further Information

Publication History

Received 16 June 1987

Accepted after revision 30 October 1987

Publication Date:
21 May 2018 (online)

Preview

Summary

A method for the quantitative assay of native single chain and kallikrein cleaved two-chain high molecular weight (HMW)-kininogen in plasma is described. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) of whole plasma is followed by electrotransfer of the electropherogram to nitrocellulose membranes and detection of the blotted HMW-kininogen with its physiologic ligands, radiolabeled plasma prekallikrein or radiolabeled factor XI. Using unreduced SDS-PAGE cleaved two-chain HMW-kininogen (Mr ∼107,000 and 95,000), is elec-trophoretically separated from uncleaved single chain HMW-kininogen (Mr ∼150,000). Counting the radioactivity of the nitrocellulose pieces corresponding to cleaved HMW-kininogen permits its quantitative measurement by comparison with standards consisting of decreasing amounts of fully dextran sulfate activated normal human plasma. Single chain HMW-kininogen is similarly assayed using reduced SDS-PAGE and unactivated normal human plasma standards.

This technique is highly specific and sensitive to about 50 ng of either cleaved or uncleaved HMW-kininogen. Varying amounts of cleaved HMW-kininogen were found in a small series of plasmas from patients suffering from various inflammatory conditions. Higher levels of in vivo cleaved HMW-kininogen were observed during acute attacks of hereditary angioedema due to Cl-inhibitor deficiency. This technique may be useful for the assessment of the degree of in vitro or in vivo activation of the contact system.