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Trichomonas vaginalis

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https://www.readbyqxmd.com/read/28430679/cervicovaginal-levels-of-human-%C3%AE-defensin-1-2-3-and-4-of-reproductive-aged-women-with-chlamydia-trachomatis-infection
#1
Nathália Mayumi Noda-Nicolau, Larissa Brito Bastos, Aline Nascimento Bolpetti, Gabriel Vitor Silva Pinto, Larissa Doddi Marcolino, Camila Marconi, Carolina Sanitá Tafner Ferreira, Jossimara Polettini, Eliane Passarelli Vieira, Márcia Guimarães da Silva
OBJECTIVE: This study included women attending primary health care units in Botucatu, São Paulo, Brazil, to assess the cervicovaginal levels of human β-defensin (hBD) 1, 2, 3, and 4 during Chlamydia trachomatis infection. PATIENTS AND METHODS: Cervicovaginal samples were collected for Pap testing and assessing the presence of infection by C. trachomatis, human papillomavirus, Neisseria gonorrhoeae, and Trichomonas vaginalis. Vaginal smears were taken to evaluate local microbiota...
April 21, 2017: Journal of Lower Genital Tract Disease
https://www.readbyqxmd.com/read/28424786/immunocytochemistry-improving-the-diagnosis-of-trichomonas-vaginalis-infections
#2
Thaisa Helena S Fonseca, Fabrício M Silva Oliveira, Marina Alacoque, Marcella Israel Rocha, Henrique Vitor Leite, Joseph F Guimarães Santos, Haendel G N O Busatti, Marcelo Vidigal Caliari, Maria Aparecida Gomes
The aim of this study was to evaluate the immunocytochemistry (ICC) to diagnose trichomoniasis, particularly asymptomatic infections. By culture serial dilutions, ICC was able to detect 1 trophozoite/mL, while the culture was positive up to 100 trophozoites/mL. The ICC in vivo detection capability was assessed in vaginal secretions of mice experimentally infected and in vaginal swabs from asymptomatic HIV-positive pregnant women compared with culture. All vaginal secretion samples from mice were positive according to both methods...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28419821/expression-of-the-enzymatically-active-legumain-like-cysteine-proteinase-tvlegu-1-of-trichomonas-vaginalis-in-pichia-pastoris
#3
Gerardo Reséndiz-Cardiel, Rossana Arroyo, Jaime Ortega-López
The legumain-like cysteine proteinase TvLEGU-1 from Trichomonas vaginalis plays a major role in trichomonal cytoadherence. However, its structure-function characterization has been limited by the lack of a reliable recombinant expression platform to produce this protein in its native folded conformation. TvLEGU-1 has been expressed in Escherichia coli as inclusion bodies and all efforts to refold it have failed. Here, we describe the expression of the synthetic codon-optimized tvlegu-1 (tvlegu-1-opt) gene in Pichia pastoris strain X-33 (Mut+) under the inducible AOX1 promoter...
April 15, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28406272/dorsal-longitudinal-foreskin-cut-is-associated-with-reduced-risk-of-hiv-syphilis-and-genital-herpes-in-men-a-cross-sectional-study-in-papua-new-guinea
#4
Andrew J Vallely, David MacLaren, Matthew David, Pamela Toliman, Angela Kelly-Hanku, Ben Toto, Rachael Tommbe, Zure Kombati, Petronia Kaima, Kelwyn Browne, Clement Manineng, Lalen Simeon, Claire Ryan, Handan Wand, Peter Hill, Greg Law, Peter M Siba, W John H McBride, John M Kaldor
INTRODUCTION: Various forms of penile foreskin cutting are practised in Papua New Guinea. In the context of an ecological association observed between HIV infection and the dorsal longitudinal foreskin cut, we undertook an investigation of this relationship at the individual level. METHODS: We conducted a cross-sectional study among men attending voluntary confidential HIV counselling and testing clinics. Following informed consent, participants had a face-to-face interview and an examination to categorize foreskin status...
April 3, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28390095/the-anti-trichomonas-vaginalis-phloroglucinol-derivative-isoaustrobrasilol-b-modulates-extracellular-nucleotides-hydrolysis
#5
Camila Braz Menezes, Graziela Vargas Rigo, Henrique Bridi, Danielle da Silva Trentin, Alexandre José Macedo, Gilsane Lino Von Poser, Tiana Tasca
Trichomonas vaginalis causes trichomoniasis, a neglected sexually transmitted disease. Due to severe health consequences and treatment failure, new therapeutic alternatives are crucial. Phloroglucinols from Southern Brazilian Hypericum species demonstrated anti-T. vaginalis and anti-Leishmania amazonensis activities. The modulation of biochemical pathways involved in the control of inflammatory response by ectonucleotidases, NTPDase and ecto-5'-nucleotidase, represents new targets for combating protozoa. This study investigated the activity of phloroglucinol derivatives of Hypericum species from Southern Brazil against T...
April 8, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28377421/a-cross-sectional-analysis-of-trichomonas-vaginalis-infection-among-heterosexual-hiv-1-serodiscordant-african-couples
#6
Aaron F Bochner, Jared M Baeten, Alison S Rustagi, Edith Nakku-Joloba, Jairam R Lingappa, Nelly R Mugo, Elizabeth A Bukusi, Saidi Kapiga, Sinead Delany-Moretlwe, Connie Celum, Ruanne V Barnabas
OBJECTIVES: Trichomonas vaginalis is the most prevalent curable STI worldwide and has been associated with adverse health outcomes and increased HIV-1 transmission risk. We conducted a cross-sectional analysis among couples to assess how characteristics of both individuals in sexual partnerships are associated with the prevalence of male and female T. vaginalis infection. METHODS: African HIV-1 serodiscordant heterosexual couples were concurrently tested for trichomoniasis at enrolment into two clinical trials...
April 4, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28368862/prevalence-of-trichomonas-vaginalis-in-women-of-reproductive-age-at-a-family-health-clinic
#7
Mateus De Paula von Glehn, Lana Cristina Evangelista Ferreira Sá, Hian Delfino Ferreira da Silva, Eleuza Rodrigues Machado
INTRODUCTION: Trichomonas vaginalis is considered the most prevalent curable sexually transmitted infection, and its occurrence exceeds that of gonococcal and chlamydia infections. This parasite has been identified as responsible for the increased risk of transmission of HIV and has also been associated with prostate and cervical cancer. Many carriers of T. vaginalis are asymptomatic and, when experiencing a health problem, they most often have nonspecific symptoms. The aim of this research was to estimate the presence of T...
March 31, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28367140/transcriptomics-indicates-active-and-passive-metronidazole-resistance-mechanisms-in-three-seminal-giardia-lines
#8
Brendan R E Ansell, Louise Baker, Samantha J Emery, Malcolm J McConville, Staffan G Svärd, Robin B Gasser, Aaron R Jex
Giardia duodenalis is an intestinal parasite that causes 200-300 million episodes of diarrhoea annually. Metronidazole (Mtz) is a front-line anti-giardial, but treatment failure is common and clinical resistance has been demonstrated. Mtz is thought to be activated within the parasite by oxidoreductase enzymes, and to kill by causing oxidative damage. In G. duodenalis, Mtz resistance involves active and passive mechanisms. Relatively low activity of iron-sulfur binding proteins, namely pyruvate:ferredoxin oxidoreductase (PFOR), ferredoxins, and nitroreductase-1, enable resistant cells to passively avoid Mtz activation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28366838/trichomonas-vaginalis-infection-in-symbiosis-with-trichomonasvirus-and-mycoplasma
#9
Raina Fichorova, Jorge Fraga, Paola Rappelli, Pier Luigi Fiori
Trichomonas vaginalis is a protozoan with an extracellular obligatory parasitic lifestyle exclusively adapted to the human urogenital tract and responsible for nearly a quarter billion sexually transmitted infections worldwide each year. This review focuses on symbiotic Trichomonasvirus and mycoplasma carried by the protozoan, their molecular features and their role in altering the human vaginal microbiome and the immunopathogenicity of the parasite. Improved diagnostics and larger clinical interventional studies are needed to confirm the causative role of protozoan symbionts in the variable clinical presentation of trichomoniasis and its morbid sequelae, including adverse reproductive outcome, susceptibility to viral infections and cancer...
March 31, 2017: Research in Microbiology
https://www.readbyqxmd.com/read/28362869/high-prevalence-of-curable-sexually-transmitted-infections-among-pregnant-women-in-a-rural-county-hospital-in-kilifi-kenya
#10
Simon Chengo Masha, Elizabeth Wahome, Mario Vaneechoutte, Piet Cools, Tania Crucitti, Eduard J Sanders
BACKGROUND: Women attending antenatal care (ANC) in resource-limited countries are frequently screened for syphilis and HIV, but rarely for other sexually transmitted infections (STIs). We assessed the prevalence of curable STIs, defined as infection with either Chlamydia trachomatis or Neisseria gonorrhoeae or Trichomonas vaginalis, from July to September 2015. METHODS: In a cross-sectional study, women attending ANC at the Kilifi County Hospital, Kenya, had a urine sample tested for C...
2017: PloS One
https://www.readbyqxmd.com/read/28357378/trichomoniasis-are-we-giving-the-deserved-attention-to-the-most-common-non-viral-sexually-transmitted-disease-worldwide
#11
REVIEW
Camila Braz Menezes, Amanda Piccoli Frasson, Tiana Tasca
Trichomonas vaginalis is the etiologic agent of trichomoniasis, the most common non-viral sexually transmitted disease (STD) in the world. Transmission: Trichomoniasis is transmitted by sexual intercourse and transmission via fomites is rare. Epidemiology, incidence and prevalence: The WHO estimates an incidence of 276 million new cases each year and prevalence of 187 million of infected individuals. However, the infection is not notifiable. Pathology/Symptomatology: The T. vaginalis infection results in a variety of clinical manifestations - in most cases the patients are asymptomatic, but some may develop signs typically associated to the disease...
June 27, 2016: Microbial Cell
https://www.readbyqxmd.com/read/28350843/high-hiv-prevalence-and-incidence-among-women-in-southern-mozambique-evidence-from-the-mdp-microbicide-feasibility-study
#12
Sibone Mocumbi, Mitzy Gafos, Khatia Munguambe, Ruth Goodall, Sheena McCormack
BACKGROUND: The study aimed to assess the feasibility of conducting large scale HIV prevention clinical trials in Mozambique by measuring HIV prevalence and incidence among women of reproductive age. This paper describes the baseline socio-demographic characteristics of the Mozambique Microbicides Development Programme (MDP) feasibility cohort, baseline prevalence of HIV and other STIs, and HIV incidence. METHODS: The Mozambique MDP feasibility study was conducted from September 2007 to August 2009 in urban Mavalane and rural Manhiça, in Southern Mozambique...
2017: PloS One
https://www.readbyqxmd.com/read/28346531/the-prevalence-of-trichomoniasis-and-associated-factors-among-women-treated-at-a-university-hospital-in-southern-brazil
#13
Fabiane Aguiar Dos Anjos Gatti, Etienne Ceolan, Fernando Salles Rodrigues Greco, Paula Costa Santos, Gabriel Baracy Klafke, Gisele Rodrigues de Oliveira, Andrea Von Groll, Ana Maria Barral de Martinez, Carla Vitola Gonçalves, Carlos James Scaini
BACKGROUND: Trichomoniasis is the most prevalent non-viral sexually transmitted disease (STD) in the world; however, it remains a neglected parasitic disease. This study aimed to determine the prevalence of trichomoniasis and its associated epidemiological factors among women treated at a hospital in southern Brazil. METHODOLOGY/PRINCIPAL FINDINGS: A cross-sectional study was performed to determine the prevalence of this infection in women treated at Hospital Universitário (HU) in Rio Grande, Rio Grande do Sul, Brazil, between January 2012 and January 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28345651/epigenome-mapping-highlights-chromatin-mediated-gene-regulation-in-the-protozoan-parasite-trichomonas-vaginalis
#14
Min-Ji Song, Mikyoung Kim, Yeeun Choi, Myung-Hee Yi, Juri Kim, Soon-Jung Park, Tai-Soon Yong, Hyoung-Pyo Kim
Trichomonas vaginalis is an extracellular flagellated protozoan parasite that causes trichomoniasis, one of the most common non-viral sexually transmitted diseases. To survive and to maintain infection, T. vaginalis adapts to a hostile host environment by regulating gene expression. However, the mechanisms of transcriptional regulation are poorly understood for this parasite. Histone modification has a marked effect on chromatin structure and directs the recruitment of transcriptional machinery, thereby regulating essential cellular processes...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345149/t-vaginalis-exosome-like-vesicles-modify-the-cytokine-profile-and-reduce-inflammation-in-parasite-infected-mice
#15
Luis Mario Olmos-Ortiz, Marco Barajas-Mendiola, Miriam Barrios-Rodiles, Laura E Castellano, Sergio Arias-Negrete, Eva E Avila, Patricia Cuéllar-Mata
Trichomonas vaginalis (Tv) is a flagellated parasite commonly spread through sexual transmission. This protozoan initiates a severe inflammatory process, inducing nitric oxide, interleukin-6 (IL-6), IL-8, IL-10, IL-17, and IL-22 production by host immune cells. The parasites elicit these responses by releasing surface lipophosphoglycan, small extracellular vesicles (exosomes) and other factors. Tv exosomes are similar to mammalian exosomes and have been implicated in the modulation of IL-8 secretion by epithelial cells...
March 27, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28301989/routine-testing-of-mycoplasma-genitalium-and-trichomonas-vaginalis
#16
Marieke L M Jenniskens, Jan H W Veerbeek, Koen L Deurloo, Erik J van Hannen, Steven F T Thijsen
BACKGROUND: Mycoplasma genitalium (MG) and Trichomonas vaginalis (TV) are common sexual transmitted infections (STI). However, most STI screening programmes do not include routinely detection of these pathogens. Consequently, epidemiological data about MG and TV in the general population is lacking. The current study aims to give insight into the prevalence of both infections, thereby guiding decisions whether testing for these pathogens should be included routinely. METHODS: Between February 2013 and August 2015, all samples sent to the laboratory of Diakonessenhuis Utrecht for STI testing (i...
June 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28296056/potential-of-bisbenzimidazole-analogs-toward-metronidazole-resistant-trichomonas-vaginalis-isolates
#17
Travis Korosh, Emmanuel Bujans, Mary Morada, Canan Karaalioglu, Jean Jacques Vanden Eynde, Annie Mayence, Tien L Huang, Nigel Yarlett
A bisoxyphenylene-bisbenzimidazole series with increasing aliphatic chain length (CH2 to C10 H20 ) containing a meta (m) or para (p) benzimidazole linkage to the phenylene ring was tested for ability to inhibit the growth of metronidazole susceptible (C1) and refractory (085) Trichomonas vaginalis isolates under aerobic and anaerobic conditions. Compound 3m, 2,2'-[α,ω-propadiylbis(oxy-1,3-phenylene)]bis-1H-benzimidazole, displayed a 5.5-fold lower minimum inhibitory concentration (MIC) towards T. vaginalis isolate 085 than metronidazole under aerobic growth conditions, (26 μM compared to 145 μM)...
March 10, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28290950/survey-of-sexually-transmitted-disease-laboratory-methods-in-u-s-army-laboratories-2012
#18
Nicole K Leamer, Nikki N Jordan, Laura A Pacha, Nabil H Latif, Eric C Garges, Joel C Gaydos
INTRODUCTION: Sexually transmitted diseases (STD) affect primarily young people (17-24 years). The U.S. Military, with many young people, strives to maintain effective STD treatment and prevention programs using current methods. Laboratory testing technology and capacity are important for appropriate clinical management and to provide data to direct prevention programs. STD laboratory capabilities are assessed in civilian and military laboratories using surveys. An Army laboratory survey was conducted in 2007...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28282646/point-of-care-sexually-transmitted-infection-diagnostics-proceedings-of-the-star-sexually-transmitted-infection-clinical-trial-group-programmatic-meeting
#19
Anthony D Cristillo, Claire C Bristow, Rosanna Peeling, Barbara Van Der Pol, Sasha Herbst de Cortina, Ivan K Dimov, Nitika Pant Pai, Dong Jin Shin, Ricky Y T Chiu, Catherine Klapperich, Purnima Madhivanan, Sheldon R Morris, Jeffrey D Klausner
The goal of the point-of-care (POC) sexually transmitted infection (STI) Diagnostics meeting was to review the state-of-the-art research and develop recommendations for the use of POC STI diagnostics. Experts from academia, government, nonprofit, and industry discussed POC diagnostics for STIs such as Chlamydia trachomatis, human papillomavirus, Neisseria gonorrhoeae, Trichomonas vaginalis, and Treponema pallidum. Key objectives included a review of current and emerging technologies, clinical and public health benefits, POC STI diagnostics in developing countries, regulatory considerations, and future areas of development...
April 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28260146/simultaneous-detection-and-identification-of-sti-pathogens-by-multiplex-real-time-pcr-in-genital-tract-specimens-in-a-selected-area-of-apulia-a-region-of-southern-italy
#20
Raffaele Del Prete, Luigi Ronga, Mirella Lestingi, Grazia Addati, Umberto Filippo Angelotti, Domenico Di Carlo, Giuseppe Miragliotta
PURPOSE: Genital tract infections are globally a major cause of morbidity in sexually active individuals. The aim of this study was to investigate the prevalence and associations of co-infections of Chlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, Mycoplasma hominis (MH), Mycoplasma genitalium, Ureaplasma urealyticum (UU) and Ureaplasma parvum (UP) in specimens collected from female (SF) and male (SM) patients. METHODS: 1575 samples from 1575 individuals from the geographical area around Bari, Apulia region in Southern Italy, were collected and analyzed by a multiplex Real-Time PCR (mRT-PCR) (Anyplex(TM) II STI-7, Seegene, Inc...
March 4, 2017: Infection
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