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Journal of Clinical Microbiology, Dec 1995, 3186-3190, Vol 33, No. 12
JG Kuipers, K Scharmann, J Wollenhaupt, E Nettelnbreker, S Hopf and H Zeidler
Routine microbiological diagnosis of Chlamydia-induced reactive arthritis
is based mainly on the detection of Chlamydia trachomatis with urogenital
swabs or in urine. Because chlamydial antigen, rRNA, and DNA are present in
low quantities in the inflamed joint, highly sensitive assays are needed to
detect C. trachomatis not only at the primary site of infection but also in
peripheral blood and peripheral blood leukocytes, which are suspected
carriers for dissemination, and in synovial fluid. To evaluate possible
tools for this purpose, the sensitivities of PCR, MicroTrak, Chlamydia EIA,
IDEIA, and PACE 2 for the detection of defined numbers of purified C.
trachomatis elementary bodies (EB) in urine, peripheral blood, peripheral
blood leukocytes, and synovial fluid were determined. In urine, PCR
detected 2, MicroTrak and ChlamydiaEIA detected 2 x 10(3), and PACE 2 and
IDEIA detected 2 x 10(4) EB per ml. In peripheral blood, only PCR and
MicroTrak detected C. trachomatis, with detection limits of 100 and 2 x
10(7) EB per ml, respectively. For peripheral blood leukocytes, the
detection limits were 2 EB per ml for PCR and 2 x 10(4) EB per ml for
MicroTrak, ChlamydiaEIA, IDEIA, and PACE 2. In synovial fluid, PCR detected
200, MicroTrak and IDEIA detected 2 x 10(5), and PACE 2 detected 10(6) EB
per ml. ChlamydiaEIA was unable to detect 2 x 10(6) EB per ml in synovial
fluid. In summary, PCR was found to be the most sensitive method. The
sensitivities of the other methods tested were at least 1,000 times lower
than that of PCR. PCR should therefore be considered a most promising tool
for routine diagnosis of Chlamydia-induced arthritis.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Sensitivities of PCR, MicroTrak, ChlamydiaEIA, IDEIA, and PACE 2 for purified Chlamydia trachomatis elementary bodies in urine, peripheral blood, peripheral blood leukocytes, and synovial fluid
Department of Internal Medicine and Dermatology, Hannover Medical School, Germany.
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