Journal List > Korean J Urol > v.48(3) > 1004879

Kim, Kim, Kim, Lee, Myung, and Kim: Detection of Cryptic Microorganisms in Patients with Chronic Prostatitis by Multiplex Polymerase Chain Reaction

Abstract

Purpose

Chronic prostatitis frequently occurs in men of all ages. Recent studies suggest that fastidious microorganisms may play a role in chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS). The aim of this study was to evaluate the usefulness and significance of multiplex polymerase chain reaction (PCR) in the diagnosis of CP/CPPS.

Materials and Methods

First voided urine (FVU) and/or expressed prostatic secretions (EPS) were collected from 92 patients. Multiplex PCR, using Dual Specificity Oligo (DSO™) primers, was used to test for Chlamydia trachomatis (CT), Mycoplasma genitalium (MG), Mycoplasma hominis (MH), Neisseria gonorrhoeae (NG), Trichomonas vaginalis (TV) and Ureaplasma urealyticum (UU).

Results

Multiplex PCR can be easily analyzed via visual comparison. Nine (39.1%) of the 23 CP/CPPS IIIa and 12 (17.4%) of the 69 IIIb patients had positive multiplex PCR, with a total of 27 microorganisms isolated, including CT, MH, MG, UU, TV and NG in 9, 7, 4, 4, 2 and 1 case, respectively. Co-infections with 2 or 3 organisms occurred in 5 cases. For the samples collected from 32 patients for both FVU and EPS, 68.7% gave the same results.

Conclusions

Multiplex PCR, using DSO™ primers, can be useful for the simple detection of fastidious microorganisms in CP/CPPS. To achieve reliable results with multiplex PCR, feasible guidelines and standardization are of major importance. Further studies will be required to define the usefulness of molecular tests for CP/CPPS in clinical practice.

Figures and Tables

Fig. 1
Species-specific DNA amplifications by multiplex polymerase chain reaction (PCR) in clinical specimens. Lane M, Molecular size marker; lane 1 (348bp), Chlamydia trachomatis; lane 2 (253bp), Mycoplasma genitalium; lane 3 (502bp), Mycoplasma hominis; lane 4 (214bp), Neisseria gonorrhoeae; lane 5 (580bp), Trichomonas vaginalis; lane 6 (435bp), Ureaplasma urealyticum; lane 7 (348, 435 and 502bp), positive control for Chlamydia trachomatis, Ureaplasma urealyticum and Mycoplasma hominis; lane 8, negative control. Internal control bands are indicated by an arrow (719bp).
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Table 1
Primers for the multiplex PCR
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pCTT1: Chlamydia trachomatis plasmid pCTT1 unknown proteins, gyrA: DNA gyrase A subunit, gap: glyceraldehyde 3-phosphate dehydrogenase, ureG-D: urease complex component UreG-D, Cesa3: cellulase synthase 3, PCR: polymerase chain reaction

Table 2
Multiplex PCR results in patients with CP/CPPS categories IIIa and IIIb
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CT: Chlamydia trachomatis, MG: Mycoplasma genitalium, MH: Mycoplasma hominis, NG: Neisseria gonorrhoeae, TV: Trichomonas vaginalis, UU: Ureaplasma urealyticum, PCR: polymerase chain reaction, CP/CPPS: chronic prostatitis/chronic pelvic pain syndrome

Table 3
Multiplex PCR results from both FVU and EPS samples in CP/CPPS patients (n=32)
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FVU: first voided urine, EPS: expressed prostatic secretions, CT: Chlamydia trachomatis, MG: Mycoplasma genitalium, MH: Mycoplasma hominis, NG: Neisseria gonorrhoeae, UU: Ureaplasma urealyticum, PCR: polymerase chain reaction, CP/CPPS: chronic prostatitis/chronic pelvic pain syndrome

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