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Chlamydia trachomatis

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https://www.readbyqxmd.com/read/28724744/ten-years-transmission-of-the-new-variant-of-chlamydia-trachomatis-in-sweden-prevalence-of-infections-and-associated-complications
#1
Jenny Dahlberg, Ronza Hadad, Karin Elfving, Inger Larsson, Jenny Isaksson, Anders Magnuson, Hans Fredlund, Magnus Unemo, Bjőrn Herrmann
OBJECTIVES: In 2006, a new variant of Chlamydia trachomatis (nvCT) was discovered in Sweden. It has a deletion in the plasmid resulting in failed detection by the single target systems from Abbott and Roche used at that time, whereas the third system used, from Becton Dickinson (BD), detects nvCT. The proportion of nvCT was initially up to 65% in counties using Abbott/Roche systems. This study analysed the proportion of nvCT from 2007 to 2015 in four selected counties and its impact on chlamydia-associated complications...
July 19, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28723470/sexually-transmitted-disease-and-male-infertility-a-systematic-review
#2
REVIEW
Mikkel Fode, Ferdinando Fusco, Larry Lipshultz, Wolfgang Weidner
CONTEXT: Theoretically, sexually transmitted diseases (STDs) have the potential to disrupt male fertility; however, the topic remains controversial. OBJECTIVE: To describe the possible association between STDs and male infertility and to explore possible pathophysiologic mechanisms. EVIDENCE ACQUISITION: We performed a systematic literature review in accordance with the PRISMA guidelines. PubMed, Embase, and the Cochrane Library were searched for articles published before January 1, 2016, using the MeSH terms for a variety of STDs and infertility...
October 2016: European Urology Focus
https://www.readbyqxmd.com/read/28722452/-lymphogranuloma-venereum
#3
Michaela Vyšatová
Lymphogranuloma venereum belongs to the sexually transmitted diseases. The disease is caused by Chlamydia trachomatis serotypes L1, L2 and L3. In the beginning of the 21st century there has been observed a large increase in the incidence of this disease in the world. There is a frequent co-occurrence with other sexually transmitted diseases (HIV, syphilis, gonorrhea, hepatitis C). Predominantly this disease affects homosexuals, in which case the first manifestation of the disease may be proctitis or proctocolitis...
2017: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/28721112/current-perspectives-in-the-usa-on-the-diagnosis-and-treatment-of-pelvic-inflammatory-disease-in-adolescents
#4
REVIEW
William L Risser, Jan M Risser, Amanda L Risser
In this review, the epidemiology, diagnosis, and treatment of pelvic inflammatory disease (PID) are discussed from a USA perspective and the difficulties that USA adolescents face in recognizing and seeking care for PID and other sexually transmitted infections (STIs) are emphasized. Females aged 15-24 years have the highest incidence of cervical infection with Chlamydia trachomatis and Neisseria gonorrheae, the principal causes of PID. PID is common in this age group. However, the incidence of PID in the USA is not known, because it is not a reportable disease, and because clinicians vary in the criteria used for the diagnosis...
2017: Adolescent Health, Medicine and Therapeutics
https://www.readbyqxmd.com/read/28717267/semen-culture-and-the-assessment-of-genitourinary-tract-infections
#5
REVIEW
Michael Solomon, Ralf Henkel
The male factor contributes approximately 50% to infertility-related cases in couples with an estimated 12%-35% of these cases attributable to male genital tract infections. Depending on the nature of the infection, testicular sperm production, sperm transport, and sperm function can be compromised. Yet, infections are potentially treatable causes of infertility. Male genital tract infections are increasingly difficult to detect. Moreover, they often remain asymptomatic ("silent") with the result that they are then passed on to the relevant sexual partner leading to fertilization and pregnancy failure as well as illness of the offspring...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28708696/prevalence-of-human-immunodeficiency-virus-and-sexually-transmitted-infections-among-cisgender-and-transgender-women-sex-workers-in-greater-kuala-lumpur-malaysia-results-from-a-respondent-driven-sampling-study
#6
Jeffrey A Wickersham, Britton A Gibson, Alexander R Bazazi, Veena Pillai, Courtney J Pedersen, Jaimie P Meyer, Nabila El-Bassel, Kenneth H Mayer, Adeeba Kamarulzaman, Frederick L Altice
BACKGROUND: Sex workers face a disproportionate burden of human immunodeficiency virus (HIV) and sexually transmitted infections (STI) worldwide. For cisgender women sex workers (CWSW), global HIV prevalence is over 10%, whereas transgender women sex workers (TWSW) face an HIV burden of 19% to 27%. METHODS: We used respondent-driven sampling to recruit 492 sex workers, including CWSW (n = 299) and TWSW (n = 193) in Greater Kuala Lumpur, Malaysia. Participants completed an in-depth survey and were screened for HIV, syphilis, Chlamydia trachomatis, and Neisseria gonorrhoeae...
June 20, 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28706939/chlamydia-and-mitochondria-an-unfragmented-relationship
#7
COMMENT
Suvagata R Chowdhury, Thomas Rudel
Presence of pathogens within a eukaryotic cell is apt to generate stress. Such stress eventually leads to host defense responses, which includes, but is not limited to, apoptosis induction and subsequent destruction of the host cell and the pathogen. Obligate intracellular pathogens such as Chlamydia trachomatis are dependent on the survival of the host cell owing to their unique replication niche within a membrane-bound inclusion. Furthermore, being energy parasites, chlamydial development is strictly dependent on the host metabolism...
June 14, 2017: Microbial Cell
https://www.readbyqxmd.com/read/28698342/prevalence-and-antibiotic-resistance-of-mycoplasma-genitalium-among-sti-clinic-attendees-in-western-canada-a-cross-sectional-analysis
#8
Jennifer Gratrix, Sabrina Plitt, LeeAnn Turnbull, Petra Smyczek, Judith Brandley, Ron Scarrott, Prenilla Naidu, Penny Parker, Brenda Blore, Amy Bull, Sandy Shokoples, Lindsay Bertholet, Irene Martin, Max Chernesky, Ron Read, Ameeta Singh
OBJECTIVES: To determine the prevalence and correlates of Mycoplasma genitalium (MG) infection among men and women, determine the prevalence of gene mutations conferring resistance and compare test performance of female specimen types. METHODS: A cross-sectional study was conducted on specimens collected for gonorrhoea (NG, Neisseria gonorrhoeae) and chlamydia (CT, Chlamydia trachomatis) among male and female Alberta STI clinic attendees using the M. genitalium transcription-mediated amplification-research use only test...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28698211/extra-rectal-lymphogranuloma-venereum-in-france-a-clinical-and-molecular-study
#9
Arnaud Desclaux, Arabella Touati, Didier Neau, Cécile Laurier-Nadalié, Cécile Bébéar, Bertille de Barbeyrac, Charles Cazanave
OBJECTIVES: To describe a series of extrarectal lymphogranuloma venereum (LGV) cases diagnosed in France. METHODS: Consecutive LGV cases confirmed at the French Reference Centre for chlamydiae with an extrarectal sample from January 2010 to December 2015 were included. The first part of the study consisted of a retrospective case note review and analysis. In a second part, the complete ompA gene sequence of our samples was determined. RESULTS: There were 56 cases overall: 50 cases of genital LGV and six cases of pharyngeal LGV...
July 11, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28697843/uriswab-an-effective-transport-medium-for-nucleic-acid-detection-of-chlamydia-trachomatis-mycoplasma-genitalium-and-neisseria-gonorrhoeae
#10
Anna-Maria G Costa, Suzanne M Garland, Rebecca Guy, Handan Wand, Sepehr N Tabrizi
Background: Patient self-sampling allows for remote collection and return to clinic or laboratory by post. Urine samples, although convenient, are challenging to post. This study evaluated UriSwab (Copan, Brescia, Italy) as a collection and transport vessel for Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Mycoplasma genitalium (MG) detection by polymerase chain reaction, compared with flocked swab and neat urine. Methods: Five replicates of each specimen type were prepared from previously characterised urine samples (n=330), stored at room temperature (RT) or 37°C, then extracted on day 1, 3, 7, 10 and 16 (VERSANT kPCR Sample Prep System, Siemens, Munich, Germany)...
July 12, 2017: Sexual Health
https://www.readbyqxmd.com/read/28694268/the-effect-of-changes-in-cervical-cancer-screening-guidelines-on-chlamydia-testing
#11
Michelle S Naimer, Jeffrey C Kwong, Deepit Bhatia, Rahim Moineddin, Michael Whelan, Michael A Campitelli, Liane Macdonald, Aisha Lofters, Ashleigh Tuite, Tali Bogler, Joanne A Permaul, Warren J McIsaac
PURPOSE: Many chlamydia infections are identified through screening, which is frequently offered to females concomitantly with cervical cancer screening. Recent cervical cancer screening guidelines recommend screening less frequently and starting later. We sought to evaluate the impact of the May 2012 Ontario, Canada, cervical cancer screening guideline change on Papanicolaou (Pap) and chlamydia trachomatis (chlamydia) testing and incidence. METHODS: We extracted population-based physician billing claims data to identify Pap and chlamydia tests and public health surveillance data to identify chlamydia cases...
July 2017: Annals of Family Medicine
https://www.readbyqxmd.com/read/28693667/distribution-of-chlamydia-trachomatis-genotypes-in-neonatal-conjunctivitis-in-hungary
#12
Eszter Balla, Fruzsina Petrovay, Tímea Erdősi, Andrea Balázs, Judit Henczkó, Edit Urbán, Gilbert G G Donders
The objective of the present study was to determine the frequency and age distribution of different Chlamydia trachomatis (CT) genotypes causing ophthalmia neonatorum (ON) in Hungary. Using CT specific PCR, we tested 76 conjunctival samples from symptomatic infants up to 3 months old in the National Centre for Epidemiology, Budapest between 2008 and 2016. CT tested positive in 30 of 76 conjunctival samples (39.5 %). The sequencing of the positive samples was successful in every case but one, and resulted in 48 % dominance for genotype E (14/29), followed by 24 % for genotype G (7/29), 10 % for J (3/29), 6...
July 10, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28692536/asymptomatic-anorectal-chlamydia-trachomatis-and-neisseria-gonorrhoeae-infections-are-associated-with-systemic-cd8-t-cell-activation
#13
Vinicius A Vieira, Vivian I Avelino-Silva, Natalia B Cerqueira, Dayane A Costa, Priscilla R Costa, Ricardo P Vasconcelos, Valdez R Madruga, Ronaldo Ismério Moreira, Brenda Hoagland, Valdiléa G Veloso, Beatriz Grinsztejn, Esper G Kallás
BACKGROUND: Oral pre-exposure prophylaxis (PrEP) has been established as a pivotal strategy in HIV prevention. However, bacterial sexually transmitted infections (STIs), such as Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG), are also highly prevalent. Although the presence of STI-related mucosal lesions is a known risk factor for HIV acquisition, the potential increase in risk associated with asymptomatic STIs is not completely understood. Recent data demonstrated higher T cell activation is a risk factor for sexually acquired HIV-1 infection...
July 7, 2017: AIDS
https://www.readbyqxmd.com/read/28681823/comparative-analysis-of-syndromic-case-management-and-polymerase-chain-reaction-based-diagnostic-assays-for-treatment-of-neisseria-gonorrhoeae-chlamydia-trachomatis-and-genital-mycoplasmas-in-patients-of-genitourinary-discharge
#14
Nazneen Arif, Sujeesh Sebastian, Neena Khanna, Seema Sood, Benu Dhawan
To respond to the situation of high prevalence and need for effective treatment for sexually transmitted infections (STIs) in low-resource settings, syndromic diagnostic approach was recommended by the World Health Organization and was adopted by National AIDS Control Organization at the primary health centre level. A retrospective study was undertaken in symptomatic patients attending an STI clinic to validate the syndromic approach for genitourinary discharge syndrome. For aetiological diagnosis, culture and/or polymerase chain reaction was used...
April 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28679521/use-of-nucleic-acid-amplification-testing-for-the-diagnosis-of-extragenital-sexually-transmitted-infections-naat-detection-of-stis-in-rectal-and-pharyngeal-swabs
#15
Lisa A Cosentino, Claire S Danby, Lorna K Rabe, Ingrid Macio, Leslie A Meyn, Harold C Wiesenfeld, Sharon L Hillier
Nucleic acid amplification testing (NAAT) is the preferred method to detect Chlamydia trachomatis and Neisseria gonorrhoeae, but no commercial tests are cleared by the US Food and Drug Administration for use with extragenital swab samples. This study evaluated the performance of Gen-Probe Aptima® Combo2 assay (Aptima) and the Cepheid Xpert® CT/NG assay (Xpert) to detect C.trachomatis and N. gonorrhoeae in rectal and pharyngeal samples from 224 men and 175 women reporting a history of anal receptive sexual intercourse...
July 5, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28674410/mobile-nucleic-acid-amplification-testing-mobinaat-for-chlamydia-trachomatis-screening-in-hospital-emergency-department-settings
#16
D J Shin, P Athamanolap, L Chen, J Hardick, M Lewis, Y H Hsieh, R E Rothman, C A Gaydos, T H Wang
Management of curable sexually-transmitted infections (STI) such as Chlamydia can be revolutionized by highly sensitive nucleic acid testing that is deployable at the point-of-care (POC). Here we report the development of a mobile nucleic acid amplification testing (mobiNAAT) platform utilizing a mobile phone and droplet magnetofluidics to deliver NAAT in a portable and accessible format. By using magnetic particles as a mobile substrate for nucleic acid capture and transport, fluid handling is reduced to particle translocation on a simple magnetofluidic cartridge assembled with reagents for nucleic acid purification and amplification...
July 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28662043/treating-village-newcomers-and-travelers-for-trachoma-results-from-asante-cluster-randomized-trial
#17
Sheila K West, Beatriz Munoz, Harran Mkocha, Laura Dize, Charlotte A Gaydos, Bonnie Swenor, Ann-Margret Ervin, Thomas C Quinn
TRIAL DESIGN: Trachoma is targeted for global elimination. Infection rates with Chlamydia trachomatis are higher in new arrivals to a community and in travelers who leave for extended periods, suggesting they are sources of re-infection. This community-randomized, clinical trial was designed to determine if a surveillance program that targeted newcomers and travelers, identified weekly, would result in more communities achieving levels of infection of ≤1%. METHODS: 52 communities were randomly allocated 1:1 to the control (annual MDA alone if warranted) or intervention arm (annual MDA if warranted, plus a surveillance program to identify and treat newcomers and travelers)...
2017: PloS One
https://www.readbyqxmd.com/read/28660278/trachomatous-scarring-and-infection-with-non-chlamydia-trachomatis-bacteria-in-women-in-kongwa-tanzania
#18
Jacob T Cox, Mabula J Kasubi, Beatriz E Muñoz, Andrea I Zambrano, Gregory S Greene, Harran Mkocha, Meraf A Wolle, Sheila K West
Purpose: To assess for an association between conjunctival infection with nonchlamydial bacterial species and the presence of trachomatous scarring (TS) in women in central Tanzania. Methods: Cross-sectional data were collected from a random sample of women ages 18 and older in 47 trachoma-endemic communities in Kongwa, Tanzania. Each participant completed a survey, provided a conjunctival swab sample, and received an ocular exam to assess for TS. Biologic samples were cultured for bacterial growth and speciation...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28660176/chlamydia-trachomatis-infection-is-associated-with-e-cadherin-promoter-methylation-downregulation-of-e-cadherin-expression-and-increased-expression-of-fibronectin-and-%C3%AE-sma-implications-for-epithelial-mesenchymal-transition
#19
Jovana Rajić, Aleksandra Inic-Kanada, Elisabeth Stein, Svetlana Dinić, Nadine Schuerer, Aleksandra Uskoković, Ehsan Ghasemian, Mirjana Mihailović, Melita Vidaković, Nevena Grdović, Talin Barisani-Asenbauer
Chlamydia trachomatis (Ct) can induce scarring disease of the ocular mucosa, known as trachoma, the most common infectious cause of blindness worldwide. We hypothesized that epithelial-mesenchymal transition (EMT) contributes to the fibrotic process in trachomatous scarring. Infection of human conjunctival epithelial cells (HCjE) with Ct activated signaling pathways involved in EMT induction, which was correlated with decreased expression of E-cadherin, guardian of the epithelial phenotype. In addition, Ct infection was associated with increased expression of two mesenchymal cell markers: fibronectin and α-SMA...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28652937/primary-health-clinic-toilet-bathroom-surface-swab-sampling-can-indicate-community-profile-of-sexually-transmitted-infections
#20
Philip M Giffard, Jiunn-Yih Su, Patiyan Andersson, Deborah C Holt
BACKGROUND: The microbiome of built environment surfaces is impacted by the presence of humans. In this study, we tested the hypothesis that analysis of surface swabs from clinic toilet/bathroom yields results correlated with sexually transmitted infection (STI) notifications from corresponding human populations. We extended a previously reported study in which surfaces in toilet/bathroom facilities in primary health clinics in the Australian Northern Territory (NT) were swabbed then tested for nucleic acid from the STI agents Chlamydia trachomatis, Neisseria gonorrhoeae and Trichomonas vaginalis...
2017: PeerJ
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