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- Domeika, Marius, et al.
(författare)
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Laboratory diagnostics for non-viral sexually transmitted infections in St. Petersburg, Russia : current situation and hallmarks for improvements
- 2008
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 22:9, s. 1094-100
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The numbers and performance characteristics of laboratories providing sexually transmitted infection (STI) diagnostic services, as well as the rates of morbidity due to STIs in St. Petersburg, Russia, remain largely unknown. OBJECTIVE: The aim of the present study was to evaluate the range, quality and availability of diagnostic services for several non-viral STIs (Chlamydia trachomatis, Neisseria gonorrhoeae, Treponema pallidum and Trichomonas vaginalis) in St. Petersburg during the period September 2005 to June 2006. METHODS: Survey data focusing on organization and performance characteristics of STI diagnostic services were assessed using questionnaires, telephone interviews and site visits. RESULTS: A total of 118 laboratories providing STI diagnostic services were identified. Of the surveyed laboratories, 54% (64 of 118) diagnosed syphilis, 81% (96 of 118) gonorrhoea, 80% (94 of 118) trichomoniasis and 49% (58 of 118) chlamydial infections. Although most of the laboratories could provide a presumptive diagnosis for syphilis, most of the N. gonorrhoeae and T. vaginalis testing of women did not adhere to international recommendations. Of the laboratories with the capacity to diagnose C. trachomatis infection, 69% still used serological testing (enzyme-linked immunosorbent assay) to detect antibodies to C. trachomatis. CONCLUSIONS: Overall, the diagnostic methods used to establish a laboratory diagnosis, the system of case reporting, the training of laboratory personnel and the level of interlaboratory communication clearly require improvement. This study represents the first step in a process of evaluation of the laboratory support for STI services and the establishment of an interlaboratory network in St. Petersburg.
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| 3. |
- Kansoul, H A, et al.
(författare)
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Parameters obtained by hepatobiliary scintigraphy have significant correlation with biochemical factors early after liver transplantation
- 2007
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Ingår i: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 48:6, s. 597-604
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Tidskriftsartikel (refereegranskat)abstract
- Background: Early postoperative hepatobiliary scintigraphy after liver transplantation is performed worldwide, but data on its significance for graft function are currently limited. Purpose: To examine the correlation between the result of early postoperative hepatobiliary scintigraphy and pre- and postoperative biochemical parameters in liver transplantation (LTx) patients. Material and Methods: Six parameters of hepatobiliary scintigraphy using 99mTc mebrofenin were statistically analyzed in 108 LTx patients: 1) half-life of the activity of elimination of mebrofenin from the blood; 2) total clearance of mebrofenin from the blood due to all possible routes; 3) half-life of the activity due to liver uptake; 4) clearance of mebrofenin from the blood due to liver uptake; 5) time to maximal uptake in the liver; and 6) the hepatic extraction fraction (HEF) and biochemical data. Analysis between patients with preoperative normal liver function, familial amyloid polyneuropathy (FAP), and end-stage liver disease (non-FAP) was also performed. Results: Univariate and multivariate analysis revealed that total bilirubin postoperative day 3 correlated with all three scintigraphic parameters, and peak aspartate aminotransferase and alanine aminotransferase correlated with HEF. The analysis between patients with FAP and non-FAP revealed no significant difference of scintigraphic data between the two groups. Conclusion: A significant correlation between early postoperative scintigraphic results and biochemical parameters was demonstrated.
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| 4. |
- Shipitsyna, Elena, et al.
(författare)
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First evaluation of six nucleic acid amplification tests widely used in the diagnosis of Chlamydia trachomatis in Russia
- 2009
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 23:3, s. 268-276
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Background In Russia, nationally developed nucleic acid amplification tests (NAATs), which have never been validated to international commercially available NAATs, are mainly used in the diagnosis of Chlamydia trachomatis infection. Objective To evaluate the performance characteristics of six NAATs widely used to diagnose C. trachomatis infection in Russia. Materials and methods In total, 446 consecutive symptomatic patients (319 females and 127 males) were included. Five polymerase chain reaction (PCR) assays and one real-time nucleic acid sequence-based amplification (NASBA) assay were evaluated on cervical and vaginal samples from females and on urethral and first voided urine samples from males. As reference methods, the Cobas Amplicor PCR, as the main 'gold standard' method, and LightMix 480HT PCR were used. Results The overall prevalence of C. trachomatis infection was 12.6%. The Russian NAATs and the reference methods displayed a high level of concordance (97.9% to 99.2%). In comparison with the reference methods, the sensitivities, specificities, positive predictive values and negative predictive values of the Russian tests in different specimens ranged from 86.1% to 100%, 99.1% to 100%, 92.3% to 100% and 98.2% to 100%, respectively. Conclusions According to the reference methods, C. trachomatis NAATs developed and used in Russia have relatively good performance characteristics for both invasive and non-invasive samples. However, larger studies that include symptomatic and asymptomatic patients as well as genital and extra-genital samples, and in comparison with other internationally well-recognized, validated, and ideally Food and Drug Administration-approved C. trachomatis NAATs performed strictly according to the manufacturer's instructions, need to be conducted. Conflicts of interest None declared.
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