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Pelvic inflammatory disease associated with Chlamydia trachomatis but not Mycoplasma genitalium in New Zealand.

UNLABELLED: Background There is a paucity of studies looking at associations between Mycoplasma genitalium and pelvic inflammatory disease (PID). The objectives of this study were to estimate the prevalence of M. genitalium in women attending a sexual health service in New Zealand and secondly to examine for an association of M. genitalium with PID. METHODS: Women consecutively attending the service for a sexual health screen (Chlamydia trachomatis, Neisseria gonorrhoeae and Trichomonas vaginalis) were recruited to establish a baseline prevalence of M. genitalium. An extra cervical swab was t…

The trans-Golgi SNARE syntaxin 10 is required for optimal development of Chlamydia trachomatis.

Chlamydia trachomatis, an obligate intracellular pathogen, grows inside of a vacuole, termed the inclusion. Within the inclusion, the organisms differentiate from the infectious elementary body (EB) into the reticulate body (RB). The RB communicates with the host cell through the inclusion membrane to obtain the nutrients necessary to divide, thus expanding the chlamydial population. At late time points within the developmental cycle, the RBs respond to unknown molecular signals to redifferentiate into infectious EBs to perpetuate the infection cycle. One strategy for Chlamydia to obtain neces…

[Role of Chlamydia trachomatis intraocular infection in the development of proliferative vitreoretinopathy (experimental study)].

OBJECTIVE: To study the influence of C. trachomatis infection on proliferative vitreoretinopathy (PVR) stimulation and development in an experimental model. MATERIAL AND METHODS: Intravitreal C. trachomatis injection was performed in 17 rabbits (right eyes) out of which 8 developed minimal chlamydial damage (1 was further subjected to histopathological examination with pathogen detection in ocular structures and other 7 were included in the study group). The control group consisted of 7 rabbits with no laboratory evidence of chlamydial infection. PVR was induced by 4 peripheral retinal punctu

Comparison of the CT OligoGen kit with cobas 4800 assay for detection of Chlamydia trachomatis.

INTRODUCTION: A prospective study was designed to assess the performance of the new CT OligoGen kit and the cobas 4800 assay for detection of Chlamydia trachomatis. METHODS: A set of samples that included urine samples (n=212), endocervical (n=167), rectal (n=53), pharyngeal (n=7) and urethral swabs (n=3). The samples were sent from a regional sexually transmitted diseases (STD) clinic in Seville, Spain, and were collected from 261 men and 181 women. Discordant results were re-analyzed and clinical data and other tests were reviewed in order to resolve them. RESULTS: Sensitivity, specificity…

Chlamydia trachomatis-induced alterations in the host cell proteome are required for intracellular growth.

Intracellular pathogens directly alter host cells in order to replicate and survive. While infection-induced changes in host transcription can be readily assessed, posttranscriptional alterations are more difficult to catalog. We applied the global protein stability (GPS) platform, which assesses protein stability based on relative changes in an adjoining fluorescent tag, to identify changes in the host proteome following infection with the obligate intracellular bacteria Chlamydia trachomatis. Our results indicate that C. trachomatis profoundly remodels the host proteome independently of chan…

Conjunctival infection with Chlamydia trachomatis in sexual partners of patients with adult inclusion conjunctivitis.

To compare the incidence of conjunctival infection with Chlamydia trachomatis in sexual partners of patients with newly diagnosed adult inclusion conjunctivitis (AIC) and a control group with healthy eyes. We also compare the observed signs and symptoms of conjunctival infection in patients with newly diagnosed AIC and their sexual partners. We performed a prospective comparative case-control study between patients with newly diagnosed AIC confirmed with direct fluorescent antibody (DFA) (n = 11), their sexual partners (n = 11), and a control group of healthy subjects (n = 11). Clinical histor…

Доля хламидийных трахоматисов среди населения, проживающего в поселениях рома: сравнение с большинством населения.

Мы намеревались изучить случаи заражения хламидией трахоматисом населения, проживающего в поселениях рома, и сравнить полученные результаты с показателями распространенности этой инфекции среди большинства населения. Мы обследовали 340 человек на предмет наличия бактерий C. trachomatis, 208 из них были рома (66 мужчин, 142 женщины) и 132 были представителями большинства населения (75 мужчин, 57 женщин). Респонденты были в возрасте 18-55 лет (средний возраст = 33,44, ЗППП = 9,57). Происхождение C. trachomatis было обнаружено с помощью прямого доказательства наличия патогена в результате цепной

Совпадение в аннотации оригинала
BACKGROUND: We aimed to study the occurrence of Chlamydia trachomatis infection in the population living in Roma settlements and to compare the obtained results with the prevalence in the majority population. METHODS: We examined 340 people for the presence of bacterium C. trachomatis, 208 of them were Roma (66 men, 142 women) and 132 were from the majority…

Barriers to and facilitators of partner notification for chlamydia trachomatis among health care professionals.

BACKGROUND: Partner notification (PN) is an essential case-finding tool in the management of sexually transmitted infections (STIs). Yet, data on the effectiveness and factors impacting implementation of PN in the Netherlands are lacking. With the aim of further exploring and improving the PN process, the current study assessed perceived barriers and facilitators among health care professionals in the STI clinical setting. In particular, we explored the management of PN in young heterosexual patients diagnosed with Chlamydia trachomatis (Ct). METHODS: We conducted semi-structured interviews a…

Formulation of the microbicide INP0341 for in vivo protection against a vaginal challenge by Chlamydia trachomatis.

The salicylidene acylhydrazide (SA) compounds have exhibited promising microbicidal properties. Previous reports have shown the SA compounds, using cell cultures, to exhibit activity against Chlamydia trachomatis, herpes simplex virus and HIV-1. In addition, using an animal model of a vaginal infection the SA compound INP0341, when dissolved in a liquid, was able to significantly protect mice from a vaginal infection with C. trachomatis. To expand upon this finding, in this report INP0341 was formulated as a vaginal gel, suitable for use in humans. Gelling agents (polymers) with inherent antim…

Incidence and correlates of Chlamydia trachomatis infection in a high-risk cohort of Kenyan women.

BACKGROUND: In Africa, data on Chlamydia trachomatis infection are scarce because reliable diagnosis is costly and not widely available. Our objective was to evaluate the incidence and correlates of C. trachomatis infection among high-risk Kenyan women. METHODS: We conducted prospective cohort analyses using data from a cohort of women who reported transactional sex. C. trachomatis testing was performed using the Gen-Probe Aptima GC/CT Detection System. We used Andersen-Gill proportional hazards modeling to evaluate correlates of C. trachomatis. RESULTS: Between August 2006 and December 2010…

Development of ELISAs for the detection of urogenital chlamydia trachomatis infection targeting the pORF5 protein.

OBJECTIVE: To prepare antibodies against pORF5 plasmid protein of Chlamydia trachomatis and develop double-antibody sandwich enzyme-linked immunosorbent assays (DAS-ELISAs) for the detection of genital C. trachomatis infections. METHODS: The pORF5 protein was expressed in Escherichia coli and used to immunize BALB/c mice and New Zealand rabbits to produce monoclonal antibodies (mAbs) and polyclonal antibody (pAb) for DAS-ELISAs. Clinical samples from 186 urogenital infection patients (groups I) and 62 healthy donors (groups II) were detected in parallel by the DAS-ELISAs developed in this stu…

[Prevalence of Chlamydia trachomatis and risk factors associated with infection detected in endocervical sample].

PURPOSE: It was to determine the prevalence of Chlamydia trachomatis and the risk factors associated with infection in endocervical specimens from women seen in outpatient Obstetrics and Gynecology. METHODS: Samples of endocervical secretion of 200 women treated at the University Hospital of the Federal University of Rio Grande were analyzed for the presence of C. trachomatis by polymerase chain reaction (PCR) using primers that amplify CT05/CT06 281 base pairs of the main outer membrane protein of C. trachomatis. All participants completed a pre-coded and self-report questionnaire. Data were…

Influence of temperature, medium, and storage duration on Chlamydia trachomatis DNA detection by PCR.

We validated the use of stored samples for Chlamydia trachomatis research. C. trachomatis DNA was detected by real-time PCR in clinical (urine and self-taken vaginal swabs) and spiked samples using six different media, five different time points (up to 2 years), and four different temperature conditions. C. trachomatis was detected in all 423 samples, and no clinically relevant degradation impact was detected.

Interest of simultaneous Chlamydia trachomatis and Neisseria gonorrhoeae screening at the time of preabortion consultation.

BACKGROUND: This study was conducted to estimate the prevalence and risk factors of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infection among women consulting for abortion and to discuss screening for these pathogens in this population. STUDY DESIGN: Systematic CT/NG screening using real-time polymerase chain reaction was performed on cervical samples from 421 women who consulted for abortion over a 6-month period. RESULTS: Among the 421 women included, 13 had symptoms of gynecological infection, and 408 were asymptomatic. Only one of the symptomatic women was infected with C…

Impact of a low-oxygen environment on the efficacy of antimicrobials against intracellular Chlamydia trachomatis.

Emergence of chronic inflammation in the urogenital tract induced by Chlamydia trachomatis infection in females is a long-standing concern. To avoid the severe sequelae of C. trachomatis infection, such as pelvic inflammatory diseases (PID), ectopic pregnancies, and tubal infertility, antibiotic strategies aim to eradicate the pathogen even in asymptomatic and uncomplicated infections. Although first-line antimicrobials have proven successful for the treatment of C. trachomatis infection, treatment failures have been observed in a notable number of cases. Due to the obligate intracellular grow…

Chlamydia trachomatis and Neisseria gonorrhoeae transmission from the female oropharynx to the male urethra.

In a sexually transmitted disease clinic-based sample of men who have sex with women, positivity for urethral Chlamydia trachomatis and Neisseria gonorrhoeae was 3.5% and 3.1%, respectively, among patients whose only urethral exposure in the previous 3 months was receiving fellatio from a woman. Urethral infections acquired by fellatio might contribute to ongoing disease spread.

Comparison of five commercial serological tests for the detection of anti-Chlamydia trachomatis antibodies.

Screening for Chlamydia trachomatis-specific antibodies is valuable in investigating recurrent miscarriage, tubal infertility and extrauterine pregnancy. We compared here the performance of immunofluorescence (IF) to four other commercial tests in detecting IgG antibodies directed against C. trachomatis: two enzyme-linked immunosorbent assays (ELISAs) using the major outer membrane protein (MOMP) as the antigen, commercialised respectively by Medac and R-Biopharm (RB), one ELISA using the chlamydial heat shock protein 60 (cHSP60) as the antigen (Medac), as well as a new automated epifluorescen…