Meijden, W.I. van der

Self-sampling in the diagnosis of recurrent vulvovaginal candidosis (Article)

2013-04-01T00:00:00Z

OBJECTIVE: This study aimed to determine the accuracy and feasibility of self-sampling in patients suspected of having recurrent vulvovaginal candidosis (RVC). MATERIALS AND METHODS: Of 441 patients with symptoms suggestive of RVC presenting during an 8-year period (January 2000 to December 2007) at a dermatology clinic, 277 were instructed to perform weekly vaginal self-sampling for a period of up to 8 weeks. Demographic charactervistics, medical history, physical examination, culture results, and therapeutic efficacy were analyzed with Fisher exact, χ2test, or Student t test. RESULTS: When only considering the results of the culture taken at consultation, 17.1% (20/117) of RVC cases could be confirmed. Positive cultures from self-sampling confirmed another 97 cases of RVC (82.9%). The sensitivity of a single Candida culture ranged from 18% to 53%, depending on the cutoff level of growth intensity of the yeast recovered. Specificity ranged from 97% to 100%, and the positive predictive value ranged from 92% to 100%. The number of positive cultures obtained was not associated with the duration of earlier vaginal complaints or with the efficacy of prophylactic treatment. Prophylactic treatment was equally effective in patients taking fluconazole once (8/13, 61.5%) or twice (48/74, 64.9%) a month, but treatment regimes were not randomized. CONCLUSIONS: The diagnosis of RVC can be improved dramatically by self-sampling, enabling a sooner start of adequate treatment. Multiple positive cultures were not associated with disease of longer duration or more severe disease and did not influence the response to prophylactic treatment.

An autoimmune phenotype in vulvar lichen sclerosus and lichen planus: A Th1 response and high levels of microRNA-155 (Article)

2012-03-01T00:00:00Z

Vulvar lichen sclerosus and lichen planus are T-cell-mediated chronic skin disorders. Although autoimmunity has been suggested, the exact pathogenesis of these disorders is still unknown. Therefore, the aim of the current study was to investigate the molecular and immunological mechanisms critical to the pathogenesis of vulvar lichen sclerosus and lichen planus. By using gene expression profiling and real-time RT-PCR experiments, we demonstrated a significantly increased expression of the pro-inflammatory cytokines (IFNγ, CXCR3, CXCL9, CXCL10, CXCL11, CCR5, CCL4, and CCL5) specific for a Th1 IFNγ-induced immune response. In addition, BIC/microRNA-155 (miR-155)a microRNA involved in regulation of the immune responsewas significantly upregulated in lichen sclerosus and lichen planus (9.5- and 17.7-fold change, respectively). Immunohistochemistry showed a significant T-cell response, with pronounced dermal infiltrates of CD4+, CD8+, and FOXP3+cells. In conclusion, these data demonstrate an autoimmune phenotype in vulvar lichen sclerosus and lichen planus, characterized by increased levels of Th1-specific cytokines, a dense T-cell infiltrate, and enhanced BIC/miR-155 expression.

Papular colpitis: A distinct clinical entity?: Symptoms, signs, histopathological diagnosis, and treatment in a series of patients seen at the rotterdam vulvar clinic (Article)

2011-01-01T00:00:00Z

Objective: To study demographic, clinical, and histopathological data as well as treatment outcome in women with papular colpitis. MATERIALS AND Methods: Data of women (n = 18) visiting the Rotterdam vulvar clinic and meeting the diagnostic criteria for papular colpitis were retrospectively analyzed using patient records. Results: Papular colpitis is usually seen in perimenopausal women and is frequently associated with copious, nonoffensive vaginal discharge and dyspareunia. Histopathological diagnosis consistently shows dense lymphocytic infiltrates. In approximately half of the women, the vulva shows Zoon-like abnormalities. Treatment with topically applied 10% hydrocortisone acetate seemed to be moderately effective. Conclusions: Papular colpitis seems to be a distinct, relatively rare and possibly autoimmune-related condition. Treatment with 10% hydrocortisone acetate may have a dramatic effect, but recurrences are common and long-term follow-up is warranted.

2010 European guideline for the management of Chlamydia trachomatis infections (Article)

2010-11-01T00:00:00Z

This guideline aims to provide comprehensive information regarding the management of infections caused by Chlamydia trachomatis in European countries. The recommendations contain important information for physicians and laboratory staff working with sexually transmitted infections (STIs) and/or STI-related issues. Individual European countries may be required to make minor national adjustments to this guideline as some of the tests or specific local data may not be accessible, or because of specific laws.

A retrospective study of 95 women with a clinical diagnosis of genital lichen planus (Article)

2010-10-01T00:00:00Z

Objective: The aim of this retrospective clinical study was to evaluate clinical features, histopathology, treatment regimen, and follow-up in 95 patients with genital lichen planus. Materials and Methods: We retrospectively analyzed data of 95 women diagnosed with genital lichen planus and visiting the vulvar clinic at Erasmus MC, Rotterdam, the Netherlands. Results: All patients were symptomatic, most often complaining of vulvar soreness and burning (31.6%). Of all women, 34% had persistent symptoms for more than 5 years. On physical examination, 81.1% showed sharply demarcated erythematous lesions, usually located at the vestibule, and 56.8% had oral lesions. Treatment usually consisted of potent topical corticosteroids. Seventeen women (17.9%) were referred to the gynecology department for additional surgical treatment. In two of them, a vulvar squamous cell carcinoma was detected, followed by radical surgery. Conclusions: In cases with vulvar soreness and burning, sharply demarcated erythematous vulvar lesions, and the concomitant presence of oral lesions, the diagnosis of lichen planus should be considered and treatment must be initiated accordingly, even when histopathology is discordant.

Variability in diagnosis of clue cells, lactobacillary grading and white blood cells in vaginal wet smears with conventional bright light and phase contrast microscopy (Article)

2009-07-01T00:00:00Z

Objective: Study the reproducibility of wet smear interpretation of clue cells, lactobacillary grades and leukocyte dominance with conventional bright light and phase contrast microscopy. Study design: Sets of vaginal specimens were taken from unselected consecutive women attending an outpatient gynaecology clinic. Air-dried vaginal fluid on a microscope slide was rehydrated with isotonic saline before examination by six independent international investigators. Some investigators initially used a conventional bright light microscope, followed by phase contrast technique. Results: Using phase contrast microscopy, an excellent inter-observer agreement was obtained among all investigators for clue cells detection (Kappa values from 0.69 to 0.94) and lactobacillary grades (Kappa 0.73-0.93). When conventional light microscopes were used, poor agreement was obtained for these criteria (Kappa index 0.37-0.72 and 0.80, respectively), but switching to phase contrast microscopy by the same investigators, improved Kappa to 0.83-0.85 and 0.88, respectively. The inter-observer agreement for estimation of the leukocyte/epithelial cell ratio (Kappa index 0.17-0.67) was poor, irrespective of the type of microscopy applied. Intra-observer agreement of clue cell detection and lactobacillary grading was also found to be excellent if phase contrast microscopy was used (Kappa 0.87-0.93), and poor with conventional bright light microscopy (Kappa 0.45-0.66). Conclusion: Clue cells and the lactobacillary grades are reliably identified by phase contrast microscopy in wet smears, with excellent intra- and inter-observer reproducibility agreement, and better than when simple bright light microscopy was used. Evaluation of leukocyte grading, on the other hand, was inconsistent among the different microscopists, irrespective of the type of microscope used. We propose to grade the leukocytes in a different way than searching for leukocyte dominance over epithelial cells, namely by counting them per high power field and per epithelial cell.

Unusual late nodular presentation of secondary syphilis (Article)

2009-04-01T00:00:00Z

A 20-year-old man presented with a five-week history of an eruption of papules and nodules disseminated over his body and face. We propose that this patient has a late form of secondary syphilis with a nodular, granulomatous inflammation in urgent need of treatment. Otherwise late irreversible sequelae could develop and unwanted possible further sexual transmission could take place.

Consecutively acquired sexually transmitted infections mimicking Crohn's disease (Article)

2009-02-01T00:00:00Z

The incidence of neonatal herpes in The Netherlands (Article)

2008-08-01T00:00:00Z

Background: In The Netherlands the incidence of neonatal herpes was 2.0-2.9 per 100,000 live births during the period 1981-1998. The low incidence warranted a rather conservative prevention policy. Objectives: To monitor for potential changes in the incidence of neonatal herpes in The Netherlands between 1999 and 2005, which may affect the prevention policy. Study design: Questionnaires were sent to all virological laboratories, the gynaecological and paediatric departments of every university hospital and half the number of the general hospitals in The Netherlands. The questionnaires pertained to the incidence of proven cases of neonatal herpes, the numbers of caesarean sections performed for the prevention of neonatal herpes and the numbers of pregnant women with genital herpes. Results: In the period 1999-2005 33 cases of neonatal herpes were reported, yielding an incidence of 3.2 cases per 100,000 live births per year. The estimated annual numbers of pregnant women with genital herpes ranged from 200 to 240. Approximately 9 caesarean sections were performed annually to prevent neonatal herpes. Conclusions: In The Netherlands neonatal herpes is still a rare condition. From the findings of this study it is concluded that it is not necessary to revise the Dutch guidelines for the prevention of neonatal herpes simplex infection.

Vulvovaginal candidiasis: Diagnostic and therapeutic approaches used by Dutch general practitioners (Article)

2008-07-18T00:00:00Z

Objective: To establish how general practitioners (GPs) in the Netherlands diagnose and treat vaginal candidiasis. Methods: Questionnaires were sent to 1160 Dutch GPs. The GPs were asked to make an inventory of the annual number of consultations for vulvovaginal candidiasis. Furthermore, information was requested with regard to diagnostic examinations performed and preferred treatment when dealing with vulvovaginal candidiasis. Results: 380 (32.87%) GPs returned the questionnaire, of which 189 GPs worked in single-person practices (n=189). The group of 380 GPs consisted of 269 (70.8%) males and 111 (29.2%) females. On average, GPs reported 105.6 consultations concerning vaginal candidiasis per practice per year. Only 61 (16.1%) Dutch GPs always or often performed microscopy when diagnosing candidiasis, while 143 (37.6%) GPs never used a microscope to confirm their diagnosis. Furthermore, only 30 (7.9%) GPs regularly took Candida cultures, whereas 154 GPs (40.5%) never took a vaginal swab to diagnose acute candidiasis. Treatment of choice was mostly miconazole (50%) or clotrimazole (24%). Conclusion: GPs often diagnose "vulvovaginal candidiasis" in their practices, but often do not perform the laboratory examinations required to confirm their putative diagnosis. This may lead to wrong diagnoses and maltreatment with antimycotics, without cure of the patients' vaginal complaints.

Authors' reply [2] (Article)

2008-02-01T00:00:00Z

Persistent high-risk sexual behaviour in men who have sex with men after symptomatic lymphogranuloma venereum proctitis (Article)

2007-10-01T00:00:00Z

In this brief paper, we report persistent high-risk sexual behaviour in a group of men who have sex with men (MSM) after symptomatic lymphogranuloma venereum (LGV) proctitis. Patient records were retrospectively studied and the number of newly acquired sexually transmitted disease (STD) was investigated. It was concluded that a high number of MSM (65%) contracted an STD relatively shortly after the diagnosis of LGV proctitis.

HPV related VIN: Highly proliferative and diminished responsiveness to extracellular signals (Article)

2007-08-15T00:00:00Z

Vulvar intraepithelial neoplasia (VIN) is a premalignant disorder caused by human papillomaviruses. Basic knowledge about the molecular pathogenesis of VIN is sparse. Therefore, we have analyzed the gene expression profile of 9 VIN samples in comparison to 10 control samples by using genome wide Affymetrix Human U133A plus2 GeneChips. Results were validated by quantitative real-time RT-PCR analysis and immunostaining of a few representative genes (TACSTD1, CCNE2, AR and ESR1). Significance analysis of microarrays (SAM) showed that 1,497 genes were differentially expressed in VIN compared to controls. By analyzing the biological processes affected by the observed differences, we found that VIN appears to be a highly proliferative disease; many cyclins (CCNA, CCNB and CCNE) and almost all prereplication complex proteins are upregulated. Thereby, VIN does not seem to depend for its proliferation on paracrine or endocrine signals. Many receptors (for example ESR1 and AR) and ligands are downregulated. Furthermore, although VIN is not an invasive disease, the inhibition of expression of a marked number of cell-cell adhesion molecules seems to indicate development towards invasion. Upon reviewing apoptosis and angiogenesis, it was observed that these processes have not become significantly disregulated in VIN. In conclusion: although VIN is still a premalignant disease, it already displays several hallmarks of cancer.

The use of serological titres of IgA and IgG in (early) discrimination between rectal infection with non-lymphogranuloma venereum and lymphogranuloma venereum serovars of Chlamydia trochomotis (Article)

2007-07-01T00:00:00Z

Objectives: To investigate whether serological titres of species-specific IgA and IgG antibodies in patients with rectal chlamydial infection could discriminate between infection with serovar L2 lymphogranuloma venereum (LGV) and infection with non-LGV serovars. Methods: A total of 39 male patients with chlamydial infection of the rectum were tested for titres of IgA and IgG antibodies within 14 days after detection of the infection and 6 and 12 months after adequate treatment. Data were collected regarding demographics, sexual orientation, HIV serostatus, history of chlamydial infection, concomitant sexually transmitted infection (STI) or HIV infection, hepatitis C virus antibodies and new STIs during follow-up. Results: Between May 2003 and November 2005, 24 men with confirmed L2 proctitis and 15 men with non-LGV rectal chlamydial infection were recruited. In multivariable analyses, both high titre of IgA within 14 days after detection of the infection and older age of the individual were found significantly associated with L2 proctitis (p<0.001 and p = 0.001, respectively). A total sum score of seven times IgA titre and individual's age ≥50 years resulted in an overall sensitivity of 92% and specificity of 100%. This total sum score was highly accurate for detection of LGV proctitis, with an area under the curve in a receiver operating characteristic curve of 0.989. Conclusions: An increased IgA antibody response and the age of the infected individual are of possible diagnostic value for (early) detection of LGV proctitis.

Condoms do not cover everything: An unusual presentation of herpes simplex virus-2 infection (Article)

2007-04-01T00:00:00Z

We report on a patient who presented with an unusual manifestation of primary herpes simplex virus (HSV) infection. Furthermore, this case again shows that even the correct use of a condom has limited protecting value. We emphasize the usefulness of informing patients carefully about transmission risks of HSV.

HIV incidence and HIV testing behavior in men who have sex with men: Using three incidence sources, the Netherlands, 1984-2005 (Article)

2007-02-01T00:00:00Z

BACKGROUND: In The Netherlands, the western part, including Rotterdam and Amsterdam harbors the majority of the known HIV-infected population, of whom men who have sex with men (MSM) comprise the largest transmission category. Given a general rise in sexually transmitted infections (STI) and risky sexual behavior, we examine the HIV incidence among MSM in the Netherlands with data from three different sources. METHODS: To describe the HIV epidemic among MSM we use: a prospective cohort study in Rotterdam (ROHOCO: 1998-2003, n = 265) and another in Amsterdam (ACS: 1984-2005, n = 1498]) plus an anonymous HIV surveillance study (Amsterdam STI clinic: 1991-2004, n = 3733) in which HIV-positive MSM were tested with a less-sensitive HIV assay. We evaluated calendar trends in HIV incidence, also focusing on age effects. RESULTS: Since the start of the HIV epidemic in the early 1980s, incidence has declined strongly in the ACS. In recent years, an increase was noted among older MSM attending the Amsterdam STI clinic (P = 0.0334). In both cohort studies, HIV incidence was lower and recent time-trends were not statistically significant. Among recently infected men at the STI clinic, only 40% accepted named HIV testing at their STI consultation. CONCLUSIONS: Data suggest that among MSM in the Netherlands, the HIV incidence is between one and four infections per 100 person-years. The epidemic expands among older STI clinic attendees. Prevention should be developed specifically for older men, along with a more efficient HIV testing approach such as routine HIV testing of MSM when they are screened for STI.

Microbial population diversity in the urethras of healthy males and males suffering from nonchlamydial, nongonococcal urethritis (Article)

2003-01-01T00:00:00Z

Nonchlamydial, nongonococcal urethritis (NCNGU) is suggested to be a sexually transmitted disease in men. NCNGU patients were compared to control subjects with regard to the presence of potentially infectious bacteria in the first void urine. Patients' pre- and post-antibiotic-treatment urine samples and two samples obtained 2 weeks apart from healthy volunteers, who did not receive antibiotic therapy, were analyzed with broad-spectrum PCR tests aiming at eubacterial small subunit rRNA genes. Restriction fragment length polymorphism analysis of the amplicons cloned from the mixtures of PCR products revealed that many different species of microorganisms were found to be colonizing the male urethra. We document here clear differences in the composition of the resident urethral flora between samples obtained from various individuals and between samples obtained at various points in time for a single individual. No major changes in population complexity were found upon antimicrobial treatment. In two of five patients a previously suggested pathogen (Mycoplasma genitalium or Haemophilus parainfluenzae) was accurately identified on the basis of DNA sequencing. No ubiquitous, azithromycin-sensitive organism was identified as a common pathogen in all patients, but up to 40% of all clones represented as-yet-unclassified bacterial species. Relatively often Pseudomonas spp. or Pseudomonas-like organisms were identified in the bacterial flora of patients. Interestingly, an as-yet-uncharacterized microbial species was identified as a negative predictor of NCNGU. This species was identified in all control subjects and was absent from all of the patient' samples (5 of 5 versus 0 of 5, P = 0.0079). This suggests that NCNGU might also be diagnosed by assessing the absence rather than the presence of certain bacterial species.

Unusual presentation of early lymphogranuloma venereum in an HIV-1 infected patient: effective treatment with 1 g azithromycin (Article)

2003-01-01T00:00:00Z

The incidence of lymphogranuloma venereum (LGV) is low in the western world. Early LGV is characterised by bubonic disease following a painless papule or small ulcer. We report a white bisexual male who presented with a painful perianal ulcer, inguinal lymphadenitis, and concomitant infection with human immunodeficiency virus 1 (HIV-1). Chlamydia trachomatis serovar L2 was identified as the cause after polymerase chain reaction and genotyping the major outer membrane protein by restricted fragment length polymorphism. Treatment with a single dose of 1 g azithromycin was effective. This case illustrates that early LGV may mimic other genital ulcer diseases, such as genital herpes or chancroid, especially in HIV infected patients. In the western world, LGV must still be included in the differential diagnosis of bubonic disease with or without sexually acquired ulcers.

Prevalence and association between herpes simplex virus types 1 and 2-specific antibodies in attendees at a sexually transmitted disease clinic (Article)

2001-01-01T00:00:00Z

BACKGROUND: Seroprevalence of herpes simplex virus type 1 (HSV-1) and HSV-2 was determined in 1993 and 1998 in a randomly selected study group of 1024 and 654 attendees, respectively, at the sexually transmitted disease (STD) clinic of the University Hospital Rotterdam-Dijkzigt, The Netherlands. Correlations of HSV-1 and HSV-2 seropositivity were investigated. The relationship between HSV-1 and HSV-2 antibodies was also studied. METHODS: Data were collected in a cross-sectional study from February 1993 until February 1994 and from January 1998 until December 1998. Glycoprotein G (gG) HSV type specific serum IgG was determined. RESULTS: Seroprevalence of HSV-1 was 68% versus 59% (1993 versus 1998, chi(2)-test P < 0.001), of HSV-2 it was 30% versus 22% (1993 versus 1998, chi(2)-test P < 0.001). Using logistic regression analyses, HSV-1 and HSV-2 seropositivity were significantly associated with age and ethnicity in both groups. In 1993, HSV-1 seropositivity also correlated with lower level of education and female gender, whereas in 1998 it correlated with 'number of sexual partners in the past 6 months' and 'present diagnosis of STD'. In both groups, HSV-2 seropositivity was also more prevalent in females and related to sexual lifestyle variables. In an exposure-disease model, HSV-1 seropositivity was not correlated with HSV-2 seropositivity (odds ratio 1993 = 1.1, 95% CI : 0.8--1.7; odds ratio in 1998 = 1.0, 95% CI : 0.5--1.8). CONCLUSIONS: Seroprevalence of HSV-1 and HSV-2 is falling among STD clinic attendees in Rotterdam. A changing pattern of risk factors for HSV-1 seropositivity indicates increasing sexual transmission of HSV-1. Seropositivity for HSV-2 correlated with known risk factors. A previous HSV-1 infection does not reduce susceptibility to subsequent genital HSV-2 infections.

Improved diagnosis of Trichomonas vaginalis infection by PCR using vaginal swabs and urine specimens compared to diagnosis by wet mount microscopy, culture, and fluorescent staining (Article)

1999-01-01T00:00:00Z

Four vaginal cotton swab specimens were obtained from each of 804 women visiting the outpatient sexually transmitted disease clinic of the Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands, for validation of various forms of Trichomonas vaginalis diagnostic procedures. One swab specimen was immediately examined by wet mount microscopy, a second swab was placed in Kupferberg's Trichosel medium for cultivation, and two swabs were placed in phosphate-buffered saline (PBS), pH 7.2. The resulting PBS suspension was used for direct staining with acridine orange and fluorescence microscopy, inoculation of modified Diamond's culture medium, and a PCR specific for T. vaginalis. A total of 70 samples positive in one or more of the tests were identified: 31 (3.8%) infections were detected by wet mount microscopy, and 36 (4.4%) were identified by acridine orange staining, as opposed to 40 (4.9%) and 46 (5.7%) positives in modified Diamond's and Trichosel media, respectively. PCR was positive for 61 (7.5%) samples. Secondly, from each of 200 women were obtained a urine sample and a vaginal cotton swab specimen, and 200 urine samples were obtained from men. For the women, 15 (7.4%) of the samples showed a positive result for either the wet mount (n = 1), Trichosel culture (n = 6), PCR on the vaginal swab sample (n = 10), or PCR on the urine specimen (n = 11). Four men (2%) were diagnosed with a T. vaginalis infection. Thus, PCR appears to be the method of choice for the detection of genital infections with T. vaginalis.

Comparison of two enzyme-linked immunosorbent assays and one rapid immunoblot for detection of herpes simplex virus type 2-specific serum antibodies. (Article)

1998-01-01T00:00:00Z

Comparison of two enzyme-linked immunosorbent assays and one rapid immunoblot assay for detection of herpes simplex virus type 2-specific antibodies in serum.

Comparison of two enzyme-linked immunosorbent assays and one rapid immunoblot assay for detection of herpes simplex virus type 2-specific antibodies in serum (Article)

1998-01-01T00:00:00Z

The sensitivities and specificities of three immunoassays for the detection of herpes simplex virus type 2 (HSV-2)-specific immunoglobulin G antibodies in serum, including the one-strip rapid immunoblot assay (RIBA; Chiron Corporation) and two indirect enzyme immunosorbent assays (EIA; Gull Laboratories and Centocor), were compared by testing a panel of 1,250 serum samples from individuals attending an outpatient clinic for sexually transmitted diseases. A qualitative agreement among the three assays was observed with 1,080 serum samples (86.4%); 291 of the serum samples (23.3%) were positive, 789 samples (63.1%) were negative, and 170 serum samples (13.6%) gave a discordant result. Results were considered conclusive when a concordant result was obtained with two of three assays. The sensitivities and specificities of the RIBA, the Gull EIA, and the Centocor EIA proved to be 99.2, 99.7, and 89.9% and 97.1, 96.7, and 99.3%, respectively. These results indicate that the Chiron RIBA and the Gull EIA are especially useful and reliable for the detection of HSV-2-specific antibodies in serum.

Prevalence and risk factors for hepatitis B virus infections among visitors to an STD clinic (Article)

1997-12-01T00:00:00Z

Objective: To determine the prevalence and risk factors for hepatitis B virus (HBV) infections among individuals attending an STD clinic in a low endemic region. Study design: A total of 1228 women and 1648 men attending the STD clinic at the University Hospital Rotterdam, Netherlands, were examined for HBV infection by determination of hepatitis B surface antigen (HBsAg) and antibodies to hepatitis B core antigen (anti-HBc). Demographic characteristics, information on sexual behaviour, and intravenous drug use were recorded. Results: The seroprevalence of HBsAg was 1.4% in women and 2.1% in men (0% in homosexual men). The seroprevalence of anti-HBc was 13% in women and 20% in men (36% in homosexual men). Native country, intravenous drug use, a history of STD, and the number of partners in the past half year (inversely) were independent risk factors for HBsAg positivity in women and heterosexual men. For anti-HBc independent associations were observed for native country, age, intravenous drug use, commercial sex, number of lifetime partners, homosexual contacts, orogenital contact (inverse), and a history of STD. Conclusion: The HBV prevalence in the STD clinic attendants was high, exceeding the national estimate, and indicates that the STD clinic population may be considered a high risk group. Our data confirmed an increased risk for HBV infections among established risk groups. Therefore, these risk groups should be routinely screened to identify HBV cases for counselling and contact tracing.

Detection of Chlamydia trachomatis in male and female urine specimens by using the amplified Chlamydia trachomatis test (Article)

1997-01-01T00:00:00Z

The amplified Chlamydia trachomatis test (AMP-CT; Gen-Probe), a new diagnostic test for the detection of Chlamydia trachomatis, was evaluated with urine specimens from 1,000 patients visiting the outpatient department for sexually transmitted diseases at the University Hospital Rotterdam, Rotterdam, The Netherlands, by comparing the results to those of cell culture. From February 1996 to July 1996, urine samples for the AMP-CT test and urethral swabs for cell culture were collected from 544 men, while cervical swabs from 456 women were also taken for cell culture. Positive test results were obtained for 130 (13%) of the patients. AMP-CT test and cell culture results were discordant for 70 (7%) specimens. Analysis of the samples with discordant results was performed by an in-house PCR. After resolution of the discordant results, the sensitivity, specificity, and positive and negative predictive values of the AMP-CT test were 84.3, 98.8, 89.6, and 98%, respectively, for samples from females and 100, 99.2, 93.1, and 100%, respectively, for samples from males, while for cell culture these values were 72.5, 99.2, 92.5, and 98%, respectively, for samples from females and 57.4, 99.0, 86.1, and 95.4%, respectively, for samples from males. We conclude that the AMP-CT test is a fast and reliable test for the detection of C. trachomatis in urine specimens from females and, in particular, males.

Comparison of three commercially available amplification assays, AMP CT, LCx, and COBAS AMPLICOR, for detection of Chlamydia trachomatis in first-void urine (Article)

1997-01-01T00:00:00Z

We compared the Gen-Probe transcription-mediated amplification assay (AMP CT), the Abbott LCx assay, and the Roche COBAS AMPLICOR assay for the detection of Chlamydia trachomatis in a mixed population in urine samples. First-void urine, urethral specimens, and cervical specimens in females were obtained from 1,000 patients (544 males and 456 females) visiting the outpatient sexually transmitted disease clinic of our hospital. The prevalence of C. trachomatis infection was 7.7% as determined by tissue culture of urethral and cervical specimens. The sensitivities of LCx, COBAS AMPLICOR, and AMP CT compared to cell culture were 79, 86, and 78%, respectively. Sensitivity and specificity were recalculated by using a new "gold standard", i.e., a sample was considered to be true positive if two or more techniques yielded positive results. Specimens positive only by cell culture or positive in only one commercial amplification technique were retested by a previously described in-house PCR. After discordance analysis the sensitivities of LCx, COBAS AMPLICOR, and AMP CT were 84, 93, and 85%, respectively. Specificity exceeded 99% for all three assays. With each method the sensitivity was lower for urine samples from females compared to urine samples from males. By application of this new gold standard, existing differences between methods are highlighted; future evaluations of new techniques should be validated against two or more amplification assays.

Epidemiology of genital chlamydial infections in patients with chlamydial conjunctivitis; a retrospective study (Article)

1996-06-01T00:00:00Z

Objective: To determine how often chlamydial conjunctivitis is accompanied by a genital chlamydial infection and if there is a correlation between the dominant hand and the eye first infected. Methods: We retrospectively studied the records of 65 patients with chlamydial conjunctivitis who were referred to the Outpatient Department of Sexually Transmitted Diseases (STD) of the University Hospital Rotterdam by ophthalmologists of the Eye Hospital Rotterdam. The patients have recently been asked by letter if they were left- or right-handed. Results: Twenty of the 37 men (54%) had a positive chlamydial urethral culture. Seventy per cent of these men had no genital symptoms. Eight of the 37 men (22%) had a non-specific urethritis (NSU). Twenty of the 27 women examined (74%) had a positive chlamydial cervical culture. Sixty per cent of these women had no genital symptoms. Eight women with a genital chlamydial infection also had another genital infection. Five women without a genital chlamydial infection had another genital infection. Two women had no genital infection at all. A correlation between the eye infected and left- or right-handedness of the patient could not be found. Conclusions: A considerable percentage of the patients with a chlamydial conjunctivitis had a concomitant genital chlamydial infection. The majority of them had no genital symptoms. Since patients with chlamydial conjunctivitis and/or their partners possibly have a concomitant genital chlamydial infection, we recommend referral of both patients and sexual partners to an STD clinic for routine examination and systemic treatment when indicated.