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Chlamydia trachomatis

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https://www.readbyqxmd.com/read/28813455/maternal-serum-c-reactive-protein-concentration-and-intra-amniotic-inflammation-in-women-with-preterm-prelabor-rupture-of-membranes
#1
Ivana Musilova, Marian Kacerovsky, Martin Stepan, Tomas Bestvina, Lenka Pliskova, Barbora Zednikova, Bo Jacobsson
OBJECTIVE: To evaluate maternal serum C-reactive protein (CRP) concentrations in pregnancies complicated by preterm prelabor rupture of membranes (PPROM) in relation to the presence of microbial invasion of the amniotic cavity (MIAC) and/or intra-amniotic inflammation (IAI). METHODS: Two hundred and eighty-seven women with singleton pregnancies complicated by PPROM between 2014 and 2016 were included in this study. Maternal blood and amniotic fluid samples were collected at the time of admission...
2017: PloS One
https://www.readbyqxmd.com/read/28809773/a-macaque-model-for-rectal-lymphogranuloma-venereum-and-non-lymphogranuloma-venereum-chlamydia-trachomatis-impact-on-rectal-simian-human-immunodeficiency-virus-acquisition
#2
Sundaram Ajay Vishwanathan, Rachael D Aubert, Monica R Morris, Chunxia Zhao, Christi Philips, George M Khalil, Frank Deyounks, Kristen Kelley, Jana M Ritter, C Y Chen, Ellen N Kersh, Janet M McNicholl
BACKGROUND: Sustained genital tract inflammation caused by sexually transmitted infections (STIs) is known to increase risk of vaginal human immunodeficiency virus (HIV) infections but, to our knowledge, there are no nonhuman primate studies that have evaluated its link to rectal HIV acquisition. METHODS: Rhesus macaques inoculated with Chlamydia trachomatis (CT) (serovars LGV-L2 and CT-E; n = 7) or saline (n = 7) received up to 20 rectal challenges twice a week of simian/HIV immunodeficiency virus (SHIVSF162p3)...
September 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28806985/parents-and-teachers-views-on-sexual-health-education-and-screening-for-sexually-transmitted-infections-among-in-school-adolescent-girls-in-kenya-a-qualitative-study
#3
George Wanje, Linnet Masese, Ethel Avuvika, Anisa Baghazal, Grace Omoni, R Scott McClelland
BACKGROUND: To successfully develop and implement school-based sexual health interventions for adolescent girls, such as screening for Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis, it is important to understand parents' and teachers' attitudes towards sexual health education and acceptability of sexually transmitted infection (STI) screening interventions. METHODS: In this qualitative study, we approached parents and teachers from three high schools to participate in in-depth interviews (IDIs) and focus-group discussions (FGDs)...
August 14, 2017: Reproductive Health
https://www.readbyqxmd.com/read/28803864/the-detection-of-microorganisms-related-to-urethritis-from-the-oral-cavity-of-male-patients-with-urethritis
#4
Phuong Thi Le, Ryoichi Hamasuna, Masahiro Matsumoto, Keiichi Furubayashi, Masayuki Hatanaka, Shuichi Kawai, Takamasa Yamaguchi, Kazutaka Uehara, Norihiko Murakami, Masaru Yoshioka, Ken Nakayama, Yutaka Shiono, Keisuke Muraoka, Masahiko Suzuki, Naohiro Fujimoto, Tetsuro Matsumoto
OBJECTIVES: To investigate the presence of microorganisms related to urethritis in the oral cavity of male patients with urethritis and the efficacies of antimicrobials for urethritis on microorganisms in the oral cavity. METHODS: Ninety-two male patients with urethritis and 17 male controls participated to this study at 12 urology clinics in Japan between March 2014 and March 2015. The first voided urine (FVU) and oral wash fluid (OWF) specimens were collected from the participants...
August 10, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28803120/chlamydia-trachomatis-prevents-apoptosis-via-activation-of-pdpk1-myc-and-enhanced-mitochondrial-binding-of-hexokinase-ii
#5
Munir A Al-Zeer, Audrey Xavier, Mohammad Abu Lubad, Janine Sigulla, Mirjana Kessler, Robert Hurwitz, Thomas F Meyer
The intracellular human bacterial pathogen Chlamydia trachomatis pursues effective strategies to protect infected cells against death-inducing stimuli. Here, we show that Chlamydia trachomatis infection evokes 3-phosphoinositide-dependent protein kinase-1 (PDPK1) signaling to ensure the completion of its developmental cycle, further leading to the phosphorylation and stabilization of MYC. Using biochemical approaches and imaging we demonstrate that Chlamydia-induced PDPK1-MYC signaling induces host hexokinase II (HKII), which becomes enriched and translocated to the mitochondria...
August 5, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28799824/high-prevalence-of-asymptomatic-sexually-transmitted-infections-among-human-immunodeficiency-virus-infected-pregnant-women-in-a-low-income-south-african-community
#6
Maanda Mudau, Remco P Peters, Lindsey De Vos, Dawie H Olivier, Dvora J Davey, Edwin S Mkwanazi, James A McIntyre, Jeffrey D Klausner, Andrew Medina-Marino
There is a lack of evidence on the burden of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) among HIV-infected pregnant women in South Africa. We conducted a cross-sectional analysis of HIV-infected pregnant women in two healthcare facilities in a South African township to determine the prevalence of CT, NG and TV. HIV-infected pregnant women were recruited during the first antenatal care visit for their current pregnancy and requested to self-collect vulvovaginal swab specimens...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28799270/non-activated-titanium-dioxide-nanoparticles-promote-the-growth-of-chlamydia-trachomatis-and-decrease-the-antimicrobial-activity-of-silver-nanoparticles
#7
Anita Bogdanov, László Janovák, Ildikó Lantos, Valéria Endrész, Dániel Sebők, Tamás Szabó, Imre Dékány, Judit Deák, Zsolt Rázga, Katalin Burián, Dezső P Virok
AIMS: Chlamydia trachomatis and herpes simplex virus are the most prevalent bacterial and viral sexually transmitted infections. Due to the chronic nature of their infections, they are able to interact with titanium-dioxide nanoparticles applied as food additives or drug delivery vehicles. The aim of our study was to describe the interactions of these two prevalent pathogens with the titanium-dioxide nanoparticles. METHODS AND RESULTS: Chlamydia trachomatis and herpes simplex virus-2 were treated with non-activated titanium-dioxide nanoparticles, silver nanoparticles and silver decorated titanium-dioxide nanoparticles before infection of HeLa and Vero cells...
August 11, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28798890/evaluation-of-cortez-onestep-chlamydia-rapicard%C3%A2-insta-test-for-the-detection-of-chlamydia-trachomatis-in-pregnant-women-at-mbare-polyclinic-in-harare-zimbabwe
#8
Stephen Stephen, Chiwoneso Gwyneth Elizabeth Muchaneta-Kubara, Marshall Wesley Munjoma, Gibson Mandozana
BACKGROUND: Cervical chlamydia infection poses high risk of pregnancy complications and neonatal infection. Reference methods for the detection of chlamydia infection are not available for routine use in developing countries. Point-of-care (POC) tests can bridge this gap. This study evaluated Cortez Onestep Chlamydia Rapicard™ insta test for the detection of Chlamydia trachomatis in pregnant women at Mbare Polyclinic and determined the prevalence of C. trachomatis. METHODS: This was a cross sectional study in 242 pregnant women aged ≥18 years attending their first ANC visit at Mbare polyclinic in Harare, Zimbabwe...
2017: International Journal of MCH and AIDS
https://www.readbyqxmd.com/read/28798195/cross-sectional-study-to-evaluate-trichomonas-vaginalis-positivity-in-women-tested-for-neisseria-gonorrhoeae-and-chlamydia-trachomatis-attending-genitourinary-medicine-and-primary-care-clinics-in-bristol-south-west-england
#9
Jane E Nicholls, Katy M E Turner, Paul North, Ralph Ferguson, Margaret T May, Karen Gough, John Macleod, Peter Muir, Patrick J Horner
BACKGROUND: Highly sensitive, commercial nucleic acid amplification tests (NAAT) for Trichomonas vaginalis have only recently been recommended for use in the UK. While testing for T. vaginalis is routine in symptomatic women attending genitourinary medicine (GUM) clinics, it is rare in asymptomatic women or those attending primary care. The aim of this study was to evaluate the positivity of T. vaginalis using a commercial NAAT, in symptomatic and asymptomatic women undergoing testing for chlamydia and gonorrhoea in GUM and primary care settings...
August 10, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28797112/a-novel-whole-bacterial-enzyme-linked-immunosorbant-assay-to-quantify-chlamydia-trachomatis-specific-antibodies-reveals-distinct-differences-between-systemic-and-genital-compartments
#10
Hannah L Albritton, Pamela A Kozlowski, Rebecca A Lillis, Chris L McGowin, Julia D Siren, Stephanie N Taylor, Joyce A Ibana, Lyndsey R Buckner, Li Shen, Alison J Quayle
Chlamydia trachomatis (CT) is the leading sexually transmitted bacterial infection. The continued global burden of CT infection strongly predicates the need for a vaccine to supplement current chlamydial control programs. The correlates of protection against CT are currently unknown, but they must be carefully defined to guide vaccine design. The localized nature of chlamydial infection in columnar epithelial cells of the genital tract necessitates investigation of immunity at the site of infection. The purpose of this study was to develop a sensitive whole bacterial enzyme-linked immunosorbent assay (ELISA) to quantify and compare CT-specific IgG and IgA in sera and genital secretions from CT-infected women...
2017: PloS One
https://www.readbyqxmd.com/read/28795162/global-survey-of-mrna-levels-and-decay-rates-of-chlamydia-trachomatis-trachoma-and-lymphogranuloma-venereum-biovars
#11
Rita Ferreira, Vítor Borges, Maria José Borrego, João Paulo Gomes
Interpreting the intricate bacterial transcriptomics implies understanding the dynamic relationship established between de novo transcription and the degradation of transcripts. Here, we performed a comparative overview of gene expression levels and mRNA decay rates for different-biovar (trachoma and lymphogranuloma venereum) strains of the obligate intracellular bacterium Chlamydia trachomatis. By using RNA-sequencing to measure gene expression levels at mid developmental stage and mRNA decay rates upon rifampicin-based transcription blockage, we observed that: i) 60-70% of the top-50 expressed genes encode proteins with unknown function and proteins involved in "Translation, ribosomal structure and biogenesis" for all strains; ii) the expression ranking by genes' functional categories was in general concordant among different-biovar strains; iii) the median of the half-life time (t1/2) values of transcripts were 15-17 min, indicating that the degree of transcripts' stability seems to correlate with the bacterial intracellular life-style, as these values are considerably higher than the ones observed in other studies for facultative intracellular and free-living bacteria; iv) transcript decay rates were highly heterogeneous within each C...
July 2017: Heliyon
https://www.readbyqxmd.com/read/28776463/prevalence-and-impact-of-sexually-transmitted-infections-in-pregnant-women-in-central-ethiopia
#12
Andreas Schönfeld, Torsten Feldt, Tafese B Tufa, Hans M Orth, André Fuchs, Million G Mesfun, Frieder Pfäfflin, Tamara Nordmann, Matthias Breuer, Monika Hampl, Dieter Häussinger
Human immunodeficiency virus (HIV) continues to be a major global public health issue and omnipresent sexually transmitted infections (STIs) increase the risk of HIV acquisition. Moreover, STIs and HIV in pregnant women can harm the unborn child. In this study, we systematically investigated the prevalence of HIV, relevant STIs and vaginal group B streptococcus colonization among pregnant women presenting at Asella Teaching Hospital in central Ethiopia and their effect on perinatal mortality. A follow-up was performed six weeks after delivery...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28771138/seroprevalence-of-anti-chlamydia-trachomatis-igm-in-neonatal-respiratory-tract-infections-in-hungary
#13
Eszter Balla, Gilbert G G Donders, Fruzsina Petrovay, Edit Urbán
PURPOSE: To determine the seroprevalence of specific IgM indicative of respiratory tract infection (RTI) due to Chlamydia trachomatis (CT) among symptomatic infants. METHODOLOGY: A descriptive study was conducted on young infants up to 5 months old at the Bacterial Sexually Transmitted Infections Reference Laboratory, National Centre for Epidemiology, Budapest, covering the period 2008-2016. Serum samples from infants suffering from RTIs were screened with a micro-immunofluorescence test (Focus, Cypress, USA) for the presence of anti-Chlamydia trachomatis-specific IgM...
August 4, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28770201/follicular-conjunctivitis-due-to-chlamydia-felis-case-report-review-of-the-literature-and-improved-molecular-diagnostics
#14
Juliana Wons, Ralph Meiller, Antonio Bergua, Christian Bogdan, Walter Geißdörfer
A 29-year-old woman presented with unilateral, chronic follicular conjunctivitis since 6 weeks. While the conjunctival swab taken from the patient's eye was negative in a Chlamydia (C.) trachomatis-specific PCR, C. felis was identified as etiological agent using a pan-Chlamydia TaqMan-PCR followed by sequence analysis. A pet kitten of the patient was found to be the source of infection, as its conjunctival and pharyngeal swabs were also positive for C. felis. The patient was successfully treated with systemic doxycycline...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28770172/diversity-of-cervical-microbiota-in-asymptomatic-chlamydia-trachomatis-genital-infection-a-pilot-study
#15
Simone Filardo, Marisa Di Pietro, Maria G Porpora, Nadia Recine, Alessio Farcomeni, Maria A Latino, Rosa Sessa
Chlamydia trachomatis genital infection continues to be an important public health problem worldwide due to its increasing incidence. C. trachomatis infection can lead to severe sequelae, such as pelvic inflammatory disease, obstructive infertility, and preterm birth. Recently, it has been suggested that the cervico-vaginal microbiota may be an important defense factor toward C. trachomatis infection as well as the development of chronic sequelae. Therefore, the investigation of microbial profiles associated to chlamydial infection is of the utmost importance...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28768469/novel-outreach-settings-to-enhance-sexually-transmitted-infection-hiv-awareness-diagnosis-and-treatment-in-hard-to-reach-populations
#16
T Lampejo, R Turner, C Roberts, K Allen, L Watson, L Caverley-Frost, P Scott, E Ostridge, G Cooney, J Hardy, K Nulty, S Day
Despite recent rises in the number of cases of sexually transmitted infections (STIs) such as syphilis and gonorrhoea in England and increasing rates of HIV diagnosis among several men who have sex with men populations, many individuals are still not engaging with sexual health services. The John Hunter Clinic for Sexual Health, Chelsea and Westminster Hospital, London set up outreach clinics at the two world's largest adult lifestyle exhibitions in 2013 and 2015. This was the first time that a sexual health screening and promotion service was available at these large-scale (over 10,000 attendees at each) adult lifestyle events...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28765368/il-4-secreting-eosinophils-promote-endometrial-stromal-cell-proliferation-and-prevent-chlamydia-induced-upper-genital-tract-damage
#17
Rodolfo D Vicetti Miguel, Nirk E Quispe Calla, Darlene Dixon, Robert A Foster, Andrea Gambotto, Stephen D Pavelko, Luanne Hall-Stoodley, Thomas L Cherpes
Genital Chlamydia trachomatis infections in women typically are asymptomatic and do not cause permanent upper genital tract (UGT) damage. Consistent with this presentation, type 2 innate and TH2 adaptive immune responses associated with dampened inflammation and tissue repair are elicited in the UGT of Chlamydia-infected women. Primary C. trachomatis infection of mice also causes no genital pathology, but unlike women, does not generate Chlamydia-specific TH2 immunity. Herein, we explored the significance of type 2 innate immunity for restricting UGT tissue damage in Chlamydia-infected mice, and in initial studies intravaginally infected wild-type, IL-10(-/-), IL-4(-/-), and IL-4Rα(-/-) mice with low-dose C...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28757928/assessing-the-need-for-routine-screening-for-mycoplasma-genitalium-in-the-low-risk-female-population-a-prevalence-and-co-infection-study-on-women-from-croatia
#18
Sunčanica Ljubin-Sternak, Tomislav Meštrović, Branko Kolarić, Neda Jarža-Davila, Tatjana Marijan, Jasmina Vraneš
BACKGROUND: There is an ongoing debate regarding possible cost and benefits, but also harm of universal screening for the emerging sexually transmitted pathogen Mycoplasma genitalium. METHODS: From the initial pool of 8665 samples that were tested, a subset of Chlamydia trachomatis-positive and randomly selected C. trachomatis-negative cervical swabs were further interrogated for M. genitalium by real-time polymerase chain reaction, using a 224 bp long fragment of the glyceraldehyde-3-phosphate dehydrogenase gene...
2017: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28754106/retesting-and-repeat-positivity-following-diagnosis-of-chlamydia-trachomatis-and-neisseria-gonorrhoea-in-new-zealand-a-retrospective-cohort-study
#19
Sally B Rose, Susan M Garrett, James Stanley, Susan R H Pullon
BACKGROUND: Testing for reinfection at 3 to 6 months following treatment for Chlamydia Trachomatis or Neisseria gonorrhoea is recommended in best practice sexual health management guidelines. This study aimed to describe rates of retesting and repeat positivity following diagnosis of chlamydia or gonorrhoea in a defined geographic region of New Zealand. METHODS: Retrospective cohort study in Wellington, New Zealand involving analysis of laboratory data for chlamydia and gonorrhoea tests performed in primary care and sexual health clinics (July 2012-July 2015)...
July 28, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28747198/population-based-prevalence-survey-of-follicular-trachoma-and-trachomatous-trichiasis-in-the-casamance-region-of-senegal
#20
Emma M Harding-Esch, Julbert Kadimpeul, Boubacar Sarr, Awa Sane, Souleymane Badji, Mass Laye, Ansumana Sillah, Sarah E Burr, David MacLeod, Anna R Last, Martin J Holland, David C Mabey, Robin L Bailey
BACKGROUND: Trachoma, caused by ocular infection with Chlamydia trachomatis, is the leading infectious cause of blindness worldwide. We conducted the first population-based trachoma prevalence survey in the Casamance region of Senegal to enable the Senegalese National Eye Care Programme (NECP) to plan its trachoma control activities. The World Health Organization (WHO) guidelines state that any individual with trachomatous trichiasis (TT) should be offered surgery, but that surgery should be prioritised where the prevalence is >0...
July 26, 2017: BMC Public Health
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