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- Smelov, V, et al.
(författare)
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CHLAMYDIA TRACHOMATIS SEROVAR DISTRIBUTIONS IN RUSSIAN MEN AND WOMEN : A COMPARISON WITH DUTCH SEROVAR DISTRIBUTIONS
- 2009
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Ingår i: Drugs of Today. - 1699-3993. ; 45, s. 33-38
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Tidskriftsartikel (refereegranskat)abstract
- The data on serovar distributions of Chlamydia trachomatis - the most diagnosed sexually transmitted infection (STI) worldwide - are important for epidemiologic purposes and transmission studies but ore completely locking in Russia. The aim of the current study is to determine the serogroup and serovar distributions in Russian men and women and compare these data with Dutch serogroup and serovar distributions. In Russian men and women, serogroup B was the most prevalent (46016), followed by the intermediate serogroup (I group; 33%) and serogroup C (27%). The distribution was comparable between men and women. The serogroup distribution was similar to the previously published distribution in Dutch cohorts. However, on a serovar level statistically very significant differences were observed, reaching up to P < 0.0001. The serovars B and G/Ga had higher prevalences compared with the reported Dutch prevalences, while serovars F, H, I/Ia, J and K hod lower prevalences compared with the Dutch studies. In conclusion, this is the first report of Russian C. trachomatis serovar/serogroup distributions. Serogroup 8 is the most prevalent, followed by serogroup I and serogroup C with no statistical differences on the serogroup level. However, significant differences between Russia and the Netherlands were observed in the distribution of C. trachomatis serovars.
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- Shipitsyna, E., et al.
(författare)
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Evaluation of polymerase chain reaction assays for the diagnosis of Trichomonas vaginalis infection in Russia
- 2013
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 27:2, s. e217-e223
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Tidskriftsartikel (refereegranskat)abstract
- Background In Russia, the microscopy- and culture-based diagnostics of trichomoniasis is mainly suboptimal. Recent years, domestically produced diagnostic PCR assays have been implemented; however, any evaluation of these PCRs has never been internationally reported. Objective To assess the performance characteristics of PCR assays developed and currently used in Russia to detect Trichomonas vaginalis. Materials and methods Five PCR assays were assessed on 448 samples (317 vaginal and 131 male urethral) collected from symptomatic attendees of youth centres (n = 415) and patients of a dermatovenereological dispensary that were previously diagnosed with trichomoniasis (n = 33). As reference assay, a sensitive and specific real-time multiplex PCR was used. Results T. vaginalis DNA was detected in five (all females) of the 415 patients of youth centres (1.2%). All 33 patients previously diagnosed at the venereological dispensary proved to be true positive. For 445 (99.3%) of these 448 samples identical results were obtained by all PCRs, 35 positive and 410 negative. The three discordant samples were positive in all PCRs except one conventional PCR assay. The sensitivities of the PCRs were 94.3-100% and 66.7-100% for vaginal and urethral swabs, respectively. All evaluated assays were 100% specific. The detection limits of the different PCRs ranged from 0.1 to 5 genome equivalents per reaction. Conclusion The PCR assays currently used in Russia for the detection of T. vaginalis have in general high sensitivities and excellent specificities for both vaginal samples and urethral samples from males.
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- Shipitsyna, E, et al.
(författare)
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Evaluation of six nucleic acid amplification tests used for diagnosis of Neisseria gonorrhoeae in Russia compared with an international strictly validated real-time porA pseudogene polymerase chain reaction
- 2009
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 23:11, s. 1246-1253
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Tidskriftsartikel (refereegranskat)abstract
- Background In Russia, laboratory diagnosis of gonorrhoea has been mainly based on microscopy only and, in some settings, relatively rare suboptimal culturing. In recent years, Russian developed and manufactured nucleic acid amplification tests (NAAT) have been implemented for routine diagnosis of Neisseria gonorrhoeae. However, these NAATs have never been validated to any international well-recognized diagnostic NAAT. Objective This study aims to evaluate the performance characteristics of six Russian NAATs for N. gonorrhoeae diagnostics. Materials and methods In total, 496 symptomatic patients were included. Five polymerase chain reaction (PCR) assays and one real-time nucleic acid sequence based amplification (NASBA) assay, developed by three Russian companies, were evaluated on urogenital samples, i.e. cervical and first voided urine (FVU) samples from females (n = 319), urethral and FVU samples from males (n = 127), and extragenital samples, i.e. rectal and pharyngeal samples, from 50 additional female patients with suspicion of gonorrhoea. As reference method, an international strictly validated real-time porA pseudogene PCR was applied. Results The prevalence of N. gonorrhoeae was 2.7% and 16% among the patients providing urogenital and extragenital samples, respectively. The Russian NAATs and the reference method displayed high level of concordance (99.4-100%). The sensitivities, specificities, positive predictive values and negative predictive values of the Russian tests in different specimens were 66.7-100%, 100%, 100%, and 99.4-100%, respectively. Conclusions Russian N. gonorrhoeae diagnostic NAATs comprise relatively good performance characteristics. However, larger studies are crucial and, beneficially, the Russian assays should also be evaluated to other international highly sensitive and specific, and ideally Food and Drug Administration approved, NAATs such as Aptima Combo 2 (Gen-Probe).Conflicts of interest None declared.
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| 8. |
- Shipitsyna, E, et al.
(författare)
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First evaluation of polymerase chain reaction assays used for diagnosis of Mycoplasma genitalium in Russia
- 2009
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 23:10, s. 1164-1172
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Tidskriftsartikel (refereegranskat)abstract
- Background Diagnosis of Mycoplasma genitalium is entirely based on nucleic acid amplification tests (NAATs). In Russia, several M. genitalium polymerase chain reaction (PCR) assays have been developed; however, any evaluation of their performance has never been performed. Objective To assess the performance of five PCRs developed and currently used in Russia for diagnosis of M. genitalium. Materials and methods Vaginal swabs and first voided urine samples (FVUs) from 281 females and urethral swabs and FVUs from 125 males were analysed using three conventional PCRs and two real-time PCRs developed by three Russian companies. As reference tests, a real-time PCR targeting the MgPa adhesin gene was used; positive results were confirmed by two conventional PCRs targeting the 16S rRNA gene and MgPa gene, respectively. For evaluation of detection limits and analytical specificities, a blinded control panel consisting of dilutions of six strains of M. genitalium and 14 other Mycoplasma species was tested. Results The prevalence of M. genitalium was 2.5% among females and 9.6% among males. The highest sensitivity (71.4-100% in different specimens) was exhibited by one real-time PCRs. Conventional PCRs from two manufacturers failed to detect M. genitalium in any of the seven positive female FVUs. All tests had a 100% clinical specificity; however, one cross-reacted with Mycoplasma pneumoniae. Conclusions Only one of the five Russian PCRs displayed reasonable sensitivity for all specimen types, but the specificities of all assays were high. Accordingly, improvements regarding sensitivity of all the tests are needed. However, larger studies, including other populations, evaluating these assays are crucial.
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- Sokolovskiy, E, et al.
(författare)
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Guidelines for the laboratory diagnosis of syphilis in East European countries
- 2009
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 23:6, s. 623-632
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Tidskriftsartikel (refereegranskat)abstract
- The present guidelines aim to provide comprehensive and precise information regarding the laboratory diagnosis of the sexually transmitted infection (STI) syphilis in East European countries. These recommendations contain important information for laboratory staff working with STIs and/or STI-related issues. Individual East European countries may be required to make minor national adjustments to these guidelines as a result of lack of accessibility to some reagents or equipment, or laws in a specific country. None declared.
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