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Indian J Med Microbiol. 2011 Jan-Mar;29(1):33-6. doi: 10.4103/0255-0857.76521.

Simultaneous and rapid differential diagnosis of Mycoplasma genitalium and Ureaplasma urealyticum based on a polymerase chain reaction-restriction fragment length polymorphism.

Author information

1
Baqiyatallah University of Medical Sciences, Tehran, Iran. rmirnejadreza@yahoo.com

Abstract

OBJECTIVES:

The aim of this investigation was to simultaneously detect and differentiate Mycoplasma genitalium and Ureaplasma urealyticum in female patients suffering from genital complications by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP).

MATERIALS AND METHODS:

Genital swabs were taken from 210 patients. They were transported to the laboratory in phosphate-buffered saline. For PCR, samples were analysed with genus-specific MyUu-R and MyUu-F primers. This primer set, which was originally designed in our laboratory, amplified a 465 bp fragment (M. genitalium) and a 559 bp fragment (U. urealyticum). Samples containing a band of the expected sizes for the Mycoplasma strains were subjected to digestion with a restriction endonuclease enzyme of TaqI and Cac8I.

RESULTS:

Of the 210 samples, a total of 100 (47.6%) samples were found to be positive for Mycoplasmas (seven M. genitalium isolates, 3.3%; and 89 U. urealyticum isolates, 42.4%), and coinfections with both species were detected in four samples (1.9%). The PCR-RFLP results showed that M. genitalium and U. urealyticum are different by enzyme patterns.

CONCLUSION:

PCR-RFLP offers a rapid and easily applicable protocol to simultaneous detection and differentiation of M. genitalium and U. urealyticum from clinical samples when specific primers and restriction enzymes are used.

PMID:
21304192
DOI:
10.4103/0255-0857.76521
[Indexed for MEDLINE]
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