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Journal of Clinical Microbiology, May 1998, p. 1226-1231, Vol. 36, No. 5
Laboratoire de Bactériologie,
Received 29 September 1997/Returned for modification 11 November
1997/Accepted 3 February 1998
We performed a genotypic characterization of seven strains of
Mycoplasma fermentans which have been isolated from the
synovial fluid of patients with rheumatoid arthritis
(n = 2), spondyloarthropathy (n = 1),
and unclassified arthritis (n = 4). We compared them to three reference strains (strains PG18 and K7 and incognitus strain)
and to a clinical isolate from the urethra of a patient with
nongonococcal urethritis. The characterization methods included electrophoresis of native DNA, arbitrarily primed PCR, and restriction fragment length polymorphism analysis following conventional and pulsed-field gel electrophoresis. Southern blot analysis with a probe
internal to an insertion sequence was performed with the restriction
products produced by the last two techniques. No extrachromosomal DNA
sequences were detected. The M. fermentans strains
identified by these methods did not present a unique profile, but they
could be separated into two main categories: four articular isolates were genetically related to PG18 and the three other isolates, the
urethral isolate, and the incognitus strain were related to K7. We also
looked for the presence of the bacteriophage MAV1 (associated with the
arthritogenic property of Mycoplasma arthritidis in
rodents) in the M. fermentans strains. MAV1 DNA was not
detected in either the clinical isolates or the reference strains of
M. fermentans.
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Genotypic Characterization of Seven Strains of
Mycoplasma fermentans Isolated from Synovial Fluids of
Patients with Arthritis
*
Corresponding author. Mailing address: Service de
Rhumatologie, Hôpital Pellegrin, 6, place
Amélie-Raba-Léon, 33076 Bordeaux cedex, France. Phone: (33)
556 79 55 56. Fax: (33) 556 79 60 84. E-mail:
thierry.schaeverbeke{at}labbebear.u-bordeaux2.fr.
Journal of Clinical Microbiology, May 1998, p. 1226-1231, Vol. 36, No. 5
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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