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A novel acute phase marker in cattle: lipopolysaccharide binding protein (LBP)

Institute for Bacteriology and Mycology, University of Leipzig, Leipzig, Germany

Birgitt Fuerll

Department Immunology, Institute of Immunology and Transfusion Medicine, University of Greifswald, Greifswald, Germany

Petra Reinhold

Federal Institute for Health Protection of Consumers and Veterinary Medicine, Jena, Germany

Monika Krueger

Institute for Bacteriology and Mycology, University of Leipzig, Leipzig, Germany

Christine Schuett

Department Immunology, Institute of Immunology and Transfusion Medicine, University of Greifswald, Greifswald, Germany, schuett{at}uni-greifswald.de

The host response to infection, the `acute phase response' is a highly conserved series of physiological reactions including marked changes in concentrations of plasma proteins. These proteins have been shown to participate in the immune response to infections. Several recent studies have elevated the role of acute phase proteins (APPs) as predictive markers in infection. APPs such as serum amyloid A and haptoglobin but not C-reactive protein (CRP) have been identified as markers of inflammation in cattle. In humans, lipopolysaccharide (LPS) binding protein (LBP) has certain biological functions in host defence and participates in acute phase reactions. We measured plasma levels of LBP in a group of 20 calves experimentally infected with Gram-negative Mannheimia haemolytica (Pasteurella) in comparison to haptoglobin, the most widely studied APP in cattle. In infected calves, LBP levels rose significantly 6 h after infection, reaching a maximum at 24 h. Haptoglobin concentrations significantly rose after 12 h, and peak responses were measured 48 h after infection. Thus, LBP may prove to be a diagnostic marker in cattle infection and is faster than haptoglobin in detecting sepsis.

Journal of Endotoxin Research, Vol. 7, No. 1, 49-52 (2001)
DOI: 10.1177/09680519010070010801


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