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Infection and Immunity, February 2001, p. 687-694, Vol. 69, No. 2
Biochemical Pharmacology, Department of
Biology, University of Konstanz, D-78457
Konstanz,1 and Untere Hofstatt 3,
D-76703 Kraichtal,2 Germany
Received 26 July 2000/Returned for modification 20 September
2000/Accepted 23 October 2000
In lipopolysaccharide-stimulated blood from 71 late-stage
borreliosis patients, the ex vivo cytokine release capacity of tumor necrosis factor alpha (TNF-
0019-9567/01/$04.00+0 DOI: 10.1128/IAI.69.2.687-694.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Modulation of Cytokine Release in Ex
Vivo-Stimulated Blood from Borreliosis Patients
) and gamma interferon (IFN-
) was reduced to 28% ± 5% and to 31% ± 5% (P
0.001), respectively, compared to that of 24 healthy controls. White
blood cell counts were normal in both groups. To investigate direct
interactions between the pathogen and the immune cells, blood from
healthy controls was exposed in vitro to live or heat-killed
Borrelia or to Borrelia lysate. Compared to the
pattern induced by bacterial endotoxins, a reduced release of TNF-
and IFN-
and an enhanced secretion of interleukin-10 and granulocyte
colony-stimulating factor was found. In blood from 10 borreliosis
patients stimulated with Borrelia lysate, TNF-
formation
was decreased to 31% ± 14% and IFN-
formation was decreased to
8% ± 3% (P
0.001) compared to the cytokine
response of blood from healthy controls (n = 24). We
propose to consider anti-inflammatory changes in the blood cytokine
response capacity elicited by Borrelia as a condition that
might favor the persistence of the spirochete.
*
Corresponding author. Mailing address: Biochemical
Pharmacology, University of Konstanz, 78457 Konstanz, Germany. Phone:
49 7531 88 4116. Fax: 49 7531 88 4117. E-mail:
Thomas.Hartung{at}uni-konstanz.de.
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