Functional impact of allelic variations/haplotypes of TNF-α on reproductive tract infections in Indian women

The aim of the present study is to investigate the functional role of TNF-α single-nucleotide polymorphisms/haplotypes in an association with reproductive tract infections (RTIs) in symptomatic and asymptomatic women. A total of 850 consecutive subjects consisting of 400 cases and 450 healthy controls, were screened for RTIs, along with their risk factors and associated symptoms. The propensity score matching was performed to reduce the confounding bias arise owing to covariates and to balance the data between two groups. A total of 211 pairs (1:1) have been created. Genotyping of rs1800629 (-308) and rs361525 (-238) SNPs of TNF-α was done by PCR–RFLP followed by sequencing. The functional implication of TNF-α SNPs in an association with RTIs was also checked by using ELISA. The frequency of -238A allele and -308A allele was found to be twofold (P < 0.0001) and threefold (P < 0.0001) higher in the presence of RTIs. AA haplotype emerged as a major player in an association with RTIs and elevated TNF-α expression. The present study revealed the functional role of rs1800629 (-308) and rs361525 (-238) of TNF-α in an association with RTIs. This information may be used to establish biomarkers for an inflammatory response during the persistence of RTIs.

Prevalence of Neisseria gonorrhoeae and Trichomonas vaginalis in Portuguese women of childbearing age

The purpose of this study was to evaluate the prevalence of Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) in Portuguese women of childbearing age. Cervicovaginal self-collected samples of 680 childbearing-age women (15-44 years) were tested for NG and TV by polymerase chain reaction. Sociodemographic, clinical and behavioural data were assessed through an anonymous self-administered questionnaire. NG and TV prevalence was 1.3% (95% confidence interval (CI) 0.7-2.5%) and 1.0% (95% CI 0.5-2.1%), respectively. The prevalence of TV was significantly higher in women aged >22 years (p = .003), with >6 years after sexual intercourse (p = .003), and who reported previous pregnancy (p = .004). Our study suggests that NG and TV are rare in Portuguese women of childbearing age. However, larger epidemiological studies with a nationally representative sample of female subjects are warranted, to clarify the need for screening of these microorganisms in Portuguese women, since its prevalence is probably underestimated.IMPACT STATEMENTWhat is already known on this subject? Studies on the prevalence of NG and TV have been performed in several developed and developing countries. However, limited data is available in Portuguese women. The detection of NG and TV is necessary because, beside the risk of transmission to sex partners, these STIs may be associated with an increased risk of HIV acquisition and transmission, and ultimately with reproductive, pregnancy and perinatal complications.What do the results of this study add? Our study adds new findings to the body of knowledge on NG and TV prevalence in Portuguese women of reproductive age. As so, we found a low prevalence of both NG (1.3%) and TV (1.0%) in the studied population.What are the implications of these findings for clinical practice and/or further research? Our results may be a step ahead to encourage future nationally representative studies evaluating the prevalence of NG and TV genital infection and, consequently, to clarify the need for screening of these microorganisms. In clinical practice, it should be highlighted the appropriate management of NG and TV infection in specific situations, such as pregnancy. Also, sexual partners must be treated to prevent the recurrences in the index cases and reduce transmission to other partners.

Modelling-based evaluation of the costs, benefits and cost-effectiveness of multipathogen point-of-care tests for sexually transmitted infections in symptomatic genitourinary medicine clinic attendees

OBJECTIVES

To quantify the costs, benefits and cost-effectiveness of three multipathogen point-of-care (POC) testing strategies for detecting common sexually transmitted infections (STIs) compared with standard laboratory testing.

DESIGN

Modelling study.

SETTING

Genitourinary medicine (GUM) services in England.

POPULATION

A hypothetical cohort of 965 988 people, representing the annual number attending GUM services symptomatic of lower genitourinary tract infection.

INTERVENTIONS

The decision tree model considered costs and reimbursement to GUM services associated with diagnosing and managing STIs. Three strategies using hypothetical point-of-care tests (POCTs) were compared with standard care (SC) using laboratory-based testing. The strategies were: A) dual POCT for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG); B) triplex POCT for CT-NG and Mycoplasma genitalium (MG); C) quadruplex POCT for CT-NG-MG and Trichomonas vaginalis (TV). Data came from published literature and unpublished estimates.

PRIMARY AND SECONDARY OUTCOME MEASURES

Primary outcomes were total costs and benefits (quality-adjusted life years (QALYs)) for each strategy (2016 GB, £) and associated incremental cost-effectiveness ratios (ICERs) between each of the POC strategies and SC. Secondary outcomes were inappropriate treatment of STIs, onward STI transmission, pelvic inflammatory disease in women, time to cure and total attendances.

RESULTS

In the base-case analysis, POC strategy C, a quadruplex POCT, was the most cost-effective relative to the other strategies, with an ICER of £36 585 per QALY gained compared with SC when using microcosting, and cost-savings of £26 451 382 when using tariff costing. POC strategy C also generated the most benefits, with 240 467 fewer clinic attendances, 808 fewer onward STI transmissions and 235 135 averted inappropriate treatments compared with SC.

CONCLUSIONS

Many benefits can be achieved by using multipathogen POCTs to improve STI diagnosis and management. Further evidence is needed on the underlying prevalence of STIs and SC delivery in the UK to reduce uncertainty in economic analyses.

Aptima Trichomonas vaginalis assay elucidates significant underdiagnosis of trichomoniasis among women in Brazil according to an observational study

OBJECTIVES

Trichomonas vaginalis (TV) infection is the most common non-viral STI globally and can result in adverse pregnancy outcomes and exacerbated HIV acquisition/transmission. Nucleic acid amplification tests (NAATs) are the most sensitive diagnostic tests, with high specificity, but TV NAATs are rarely used in Brazil. We investigated the TV prevalence and compared the performance of the US Food and Drug Association-cleared Aptima TV assay with microscopy (wet mount and Gram-stained) and culture for TV detection in women in Pelotas, Brazil in an observational study.

METHODS

From August 2015 to December 2016, 499 consecutive asymptomatic and symptomatic sexually active women attending a Gynaecology and Obstetrics Outpatient Clinic were enrolled. Vaginal fluid and swab specimens were collected and wet mount microscopy, Gram-stained microscopy, culture and the Aptima TV assay performed.

RESULTS

The median age of enrolled women was 36.5 years (range: 15-77). The majority were white, had a steady sexual partner and low levels of education. The TV detection rate was 4.2%, 2.4%, 1.2% and 0% using the Aptima TV assay, culture, wet mount microscopy and Gram-stained microscopy, respectively. The sensitivity of culture and wet mount microscopy was only 57.1% (95% CI 36.5 to 75.5) and 28.6% (95% CI 13.8 to 50.0), respectively.

CONCLUSIONS

A 4.2% positivity rate of T. vaginalis was found among women in Pelotas, Brazil and the routine diagnostic test (wet mount microscopy) and culture had low sensitivities. More sensitive diagnostic tests (NAATs) and enhanced testing of symptomatic and asymptomatic at-risk women are crucial to mitigate the transmission of TV infection, TV-associated sequelae and enhanced HIV acquisition and transmission.