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Involvement of cystic fibrosis transmembrane conductance regulator (CFTR) in the pathogenesis of hydrosalpinx induced by Chlamydia trachomatis infection.

BACKGROUND: Genital Chlamydia (C) trachomatis infection has been recognized as the single most common cause of pelvic inflammatory disease leading to severe tubal damage, ectopic pregnancy, infertility and hydrosalpinx. However, the mechanism underlying the formation of hydrosalpinx induced by C. trachomatis infection remains largely unknown. We performed this study to determine the involvement of cystic fibrosis transmembrane conductance regulator (CFTR), a cAMP-activated chloride channel that regulates epithelial electrolyte and fluid secretion, in hydrosalpinx fluid formation. METHODS: Wes

The value of Chlamydia trachomatis-specific IgG antibody testing and hysterosalpingography for predicting tubal pathology and occurrence of pregnancy.

We assessed two diagnostic methods, Chlamydia trachomatis-specific IgG and hysterosalpingography (HSG), as a screening test for the likelihood of tubal damage or occurrence of pregnancy before laparoscopy in 178 subfertile women who were randomly assigned to HSG followed by laparoscopy or immediate laparoscopy. The diagnostic accuracy and prognostic value of both C. trachomatis-specific IgG antibody testing and HSG are comparable but show poor performance.

Antibody to the Chlamydia trachomatis 60 kDa heat shock protein in follicular fluid and in vitro fertilization outcome.

PROBLEM: The association between 60 kDa Chlamydia trachomatis heat shock protein (CHSP60) antibodies and the etiology and outcomes of in vitro fertilization (IVF) outcomes is not well known. METHOD OF STUDY: A retrospective study with a double-blind analysis of follicular fluid from 253 IVF patients for IgG antibodies to CHSP60. RESULTS: The CHSP60 antibodies were detected in 74.1% of women without embryo implantation and in 47.9% of women with 1-3 implantations per IVF cycle (P = 0.0004). CHSP60 antibodies were detected in 69.5% of women with tubal occlusion and 49.7% of women with other ca…

Seroprevalence of antibodies to conserved regions of Chlamydia trachomatis heat shock proteins 60 and 10 in women in India.

Persistent, untreated chlamydial infection causes chronic stimulation of the host immune system against immunogenic antigens such as chlamyd … nts, 107 were diagnosed with cervicitis while 52 had pelvic inflammatory disease (PID)/infertility. Chlamydia trachomatis infection in endocervical specimens is diagnosed by a direct fluorescence assay (DFA) and the polymerase chain reaction (PCR). In 75 (29.4%) of the C. trachomatis-positive women, 50 (66.7%) were ELISA positive for MOMP 48 (64.0%) were positive for c …

Rapid hybridization probe assay and PCR for detection of Chlamydia trachomatis in urinary tract infections: a prospective study.

Chlamydia trachomatis is a widespread bacterium that causes trachoma and genital tract infections in humans. The fact that the growth of this pathogen does not normally occur outside living cells poses a challenge in its diagnosis. The present study aimed to compare the efficacies of different molecular and cultural methods in the detection of C. trachomatis in urine samples collected from patients with urinary tract infections. Examined detection methods involved the Gen-Probe C. trachomatis (GP-CT) assay, direct antigen detection by enzyme-linked immunosorbent assay (ELISA), and polymerase c…

Immunohistochemical analysis of TNF-alpha and HSP-60 in women with tubal factor infertility associated with Chlamydia trachomatis.

To explore the roles of tumor necrosis factor-alpha (TNF-alpha) and heat shock protein 60 (HSP-60) in women with tubal factor infertility (TFI) associated with Chlamydia trachomatis, and to determine the mechanisms of fallopian adhesions in Chlamydia trachomatis (CT) infections, the expressions of TNF-alpha and HSP-60 were quantitatively determined in 60 cases of TFI and 30 controls by immunohistochemical technique. The patients with TFI were further divided into group A and group B according to the CT-DNA of cervical specimens of PCR. The quantitative analysis was conducted by employing compu…

Antibodies to Chlamydia trachomatis heat shock proteins Hsp60 and Hsp10 and subfertility in general population at age 31.

PROBLEM: To assess the association between antibodies to Chlamydia trachomatis heat shock proteins 60 and 10 (Hsp60 and Hsp10) and subfertility in a general population sample. METHOD OF STUDY: A nested case (n = 146)-control (n = 278) study in a population-based birth cohort. Serum immunoglobulin (Ig)G and IgA antibodies against C. trachomatis Hsp60 and Hsp10, explanatory factors, were measured by enzyme immunoassay, using recombinant proteins as antigens. The main outcome variable was subfertility (time to pregnancy > or =12 months). RESULTS: The prevalence and medians of serum IgA antibodi…

Screening for Neisseria gonorrhoeae and Chlamydia trachomatis in men who have sex with men at male-only saunas.

BACKGROUND AND OBJECTIVES: In response to increases in sexually transmissible infections (STI) and HIV infection rates among men who have se … design. Pharyngeal, rectal, and urethral specimens were collected from participants, and tested for Chlamydia trachomatis and Neisseria gonorrhoeae by polymerase chain reaction (PCR). RESULTS: There was a participation rate of 24% (n=521), and 70% obtained their test results. The infection rate in those who failed to collect their results was no different than those s …

Evaluation of COBAS AMPLICOR (Roche): accuracy in detection of Chlamydia trachomatis and Neisseria gonorrhoeae by coamplification of endocervical specimens.

We evaluated further the accuracy of the COBAS AMPLICOR (Roche) (CA) PCR-based system in detection of Chlamydia trachomatis and Neisseria gonorrhoeae in endocervical specimens. Endocervical specimens collected for any indication for testing for C. trachomatis and N. gonorrhoeae among a university hospital health system population were included. Testing for C. trachomatis was done by two PCR methods, CA and manual microwell AMPLICOR (Roche) (MWA), and by culture; testing for N. gonorrhoeae was done by CA and culture. Discrepancy resolution was performed. Reproducibility testing and hands-on lab…

Effects of estradiol and progesterone on susceptibility and early immune responses to Chlamydia trachomatis infection in the female reproductive tract.

We have used a previously described rodent model to examine the influence of hormonal environment on susceptibility and immune responses to genital Chlamydia infection. Ovariectomized rats were administered estradiol, progesterone, or a combination of both, infected with Chlamydia trachomatis via the intrauterine route, and sacrificed 5 days later. Histopathological examination showed severe inflammation in the uteri and vaginae of progesterone-treated animals, whereas animals receiving estradiol or a combination of both hormones showed no inflammation. Large numbers of chlamydiae were found i…

[Epidemiological study of Chlamydia trachomatis infection in a sample of women requesting voluntary termination of pregnancy, treated with rokitamycin].

BACKGROUND: Infection with Chlamydia trachomatis usually involves the cervix uteri, causing no symptoms, and may easily be unrecognised and untreated until troublesome symptoms arise, such as pelvic inflammatory disease, which can affect fertility and reproductive life. Therapies include the macrolide antibiotics, and in this class rokitamycin offers marked lipophilia, excellent intracellular penetration, and bactericidal activity at concentrations close to the MIC. The present study was therefore designed to establish the frequency of intracervical infection with Chlamydia trachomatis in wome…

Comparison of a ligase chain reaction-based assay and cell culture for detection of pharyngeal carriage of Chlamydia trachomatis.

In 264 genitourinary medicine clinic attenders reporting recent fellatio, the prevalence of pharyngeal Chlamydia trachomatis determined by an expanded standard including cell culture and two in-house PCR tests was 1.5% in 194 women and zero in 70 men. The ligase chain reaction (Abbott LCx) had a specificity of 99.2% and a positive predictive value of 60%.

Opportunistic screening for Chlamydia trachomatis cervicitis: the value of cytobrush specimens for detection by PCR compared with cell culture.

UNLABELLED: Endocervical sampling for microbiological and pathological screening is laborious and expensive due to different sampling devices and techniques. The purpose of this study was to examine if the routine procedure could be simplified by using a cytobrush for concurrent cytology and sampling for Chlamydia trachomatis detection using the PCR method or cell culture. As a sampling device control we used a conventional rayon swab. RESULTS: Culture: Out of 873 paired endocervical specimens, C. trachomatis was isolated in 68 swab specimens and in 65 cytobrush specimens (overall detection r…

Serological responses of patients with ectopic pregnancy to epitopes of the Chlamydia trachomatis 60 kDa heat shock protein.

Clinical and histopathological correlations of immunoreactivity to Chlamydia trachomatis and to epitopes of the C. trachomatis 60 kDa heat shock protein (hsp60) among women with ectopic pregnancy were evaluated in a case-control study. Serological responses to 13 synthetic peptides corresponding to major epitopes of the chlamydial hsp60 were determined in 67 women treated for ectopic pregnancy and 45 women with uncomplicated pregnancy in utero. Plasma cell salpingitis was detected in 29 (43.3%) of the ectopic patients. Its presence correlated with antibodies to two hsp60 epitopes, encompassing…

[Use of an experimental Chlamydia trachomatis salpingitis model for evaluating the effectiveness of antibiotics and anti-inflammatory agents on fertility].

OBJECTIVES: An experimental model of Chlamydia trachomatis salpingitis was developed in mice to study the effect of combination antibiotic and antiinflammatory therapy on restoring fertility after tubal infection. METHODS: The mice were infected by injection via the ovarian bursa with a suspension containing a human strain of Chlamydia trachomatis sevar F. After treatment with antibiotics alone or in combination with antiinflammatory agents, fertility was studied at 4 months. RESULTS: With doxycycline and ofloxacine, there was not a significant difference in fertility between animals treated…

Характеристика новой изоляции хламидийного трахомата, не имеющего общего плазмида и свойств биовара трахомы.

хламидия трахоматис уретральная изоляция, альфа/95, приносящая pgp3-отрицательный, но в противном случае нормальные включения иммунофлюоресцентом также дали отрицательные результаты, когда PCR и Southern blotting искали PCT-гомологическую ДНК. Оmp-1 анализ последовательности выявил альфа/95 как новый генотип В. Эти выводы подтверждают, что ПХТ не требуется для хламидиального роста в vitro.

Совпадение в аннотации оригинала
A Chlamydia trachomatis urethral isolate, alpha/95, yielding pgp3-negative but otherwise normal inclusions by immunofluorescence also gave negative results when pCT-homologous DNA was searched by PCR and Southern blotting. omp-1 sequence analysis identified alpha/95 as a new genotype B variant. These findings confirm that pCT is not required for chlamydial g…

Use of polymerase chain reaction for the detection of Chlamydia trachomatis in ocular and nasopharyngeal specimens from infants with conjunctivitis.

BACKGROUND: Chlamydia trachomatis is the most common identifiable infectious cause of neonatal conjunctivitis. Nonculture tests including enzyme immunoassays and direct fluorescent antibody tests have been shown to perform well for the diagnosis of chlamydial conjunctivitis with sensitivities and specificities > or = 90%. However, the performance with respiratory specimens has been less than satisfactory. METHODS: We compared a new, commercially available polymerase chain reaction (PCR) assay, Roche AMPLICOR (Roche Diagnostic Systems, Branchburg, NJ) with culture for the detection of C. trach…

Chlamydia trachomatis genitourinary infections: laboratory diagnosis and therapeutic aspects. Evaluation of in vitro and in vivo effectiveness of azithromycin.

Chlamydia trachomatis (C.t.) cell culture represents a sensitive method for the diagnosis of chlamydial infection and the only one which makes it possible to determine the susceptibility of an isolate to antibiotics so that an appropriate drug can be selected for individual treatment. In 11 patients, affected by urethroprostatitis and suspected of treatment failure with standard drug regimens, either due to lack of compliance with therapy or antibiotic resistance, C.t. was isolated in McCoy cell culture from urethral swabs, after prostatic massage. The in vitro activity of azithromycin against…

[Positive rates of Neisseria gonorrhoeae and Chlamydia trachomatis on pharynx and rectum of patients with gonococcal or chlamydial genital infections].

In an attempt to know the applicability of non-cultural detection technique for N. gonorrhoeae and C. trachomatis on pharyngeal and rectal swabs, the swabs taken from N. gonorrhoeae- and C. trachomatis-free subjects were tested by Gonozyme, Chlamydiazyme, Ideia Chlamydia, Gen-Probe and Gen Probe Pace 2. As N. gonorrhoeae- and C. trachomatis-free subjects, the castrated males older than age 70, with known prostate cancer treated at least for 6 months with anti-androgens who were seronegative for C. trachomatis and had a history of Ofloxacin treatment in the last 3 months and whose pharyngeal an