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Trichomonas vaginalis

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https://www.readbyqxmd.com/read/29326178/impact-of-replacing-cytology-with-human-papillomavirus-testing-for-cervical-cancer-screening-on-the-prevalence-of-trichomonas-vaginalis-a-modelling-study
#1
Ben B Hui, Caitlin P Reulein, Rebecca J Guy, Basil Donovan, Jane S Hocking, Matthew G Law, David G Regan
OBJECTIVES: Trichomonas vaginalis (TV) is the most common curable STI worldwide and is associated with increased risk of HIV acquisition and serious reproductive morbidities. The prevalence of TV infection is very low in Australian cities, and this is thought to be at least partly due to incidental detection and treatment of TV in women participating in the cervical cytology screening programme. In 2017, the national cervical screening programme will transition to a new model based on testing for high-risk (HR) human papillomavirus (HPV), with a reduced frequency and commencement at an older age...
January 11, 2018: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/29323559/reply-to-letter-to-editor-regarding-risk-of-bacterial-vaginosis-trichomonas-vaginalis-and-candida-albicans-infection-among-new-users-of-combined-hormonal-contraception-compared-to-levonorgestrel-releasing-intrauterine-system
#2
Mohamed Rezk, Tarek Sayyed, Alaa Masood, Ragab Dawood
No abstract text is available yet for this article.
January 11, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29321601/crispr-cas9-mediated-gene-modification-and-gene-knock-out-in-the-human-infective-parasite-trichomonas-vaginalis
#3
Brian D Janssen, Yi-Pei Chen, Brenda M Molgora, Shuqi E Wang, Augusto Simoes-Barbosa, Patricia J Johnson
The sexually-transmitted parasite Trichomonas vaginalis infects ~1/4 billion people worldwide. Despite its prevalence and myriad adverse outcomes of infection, the mechanisms underlying T. vaginalis pathogenesis are poorly understood. Genetic manipulation of this single-celled eukaryote has been hindered by challenges presented by its complex, repetitive genome and inefficient methods for introducing DNA (i.e. transfection) into the parasite. Here, we have developed methods to increase transfection efficiency using nucleofection, with the goal of efficiently introducing multiple DNA elements into a single T...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29318987/determination-of-trichomonas-vaginalis-genotypes-using-pcr-restriction-fragment-length-polymorphism-rflp
#4
Serpil Demirağ, Erdoğan Malatyalı, Sema Ertuğ, Hatice Ertabaklar
OBJECTIVE: Trichomonas vaginalis is an anaerobic protozoon and the most common non-viral sexually transmitted pathogen. The present study was designed to determine the genotypes of T. vaginalis using polymerase chain reaction (PCR)-restriction fragment length polymorphism of actin gene. METHODS: A total of 20 isolates from symptomatic females isolated and cryopreserved at Adnan Menderes University, Research and Training Hospital Parasitology Laboratory were included...
December 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/29288183/performance-of-syndromic-management-for-the-detection-and-treatment-of-genital-chlamydia-trachomatis-neisseria-gonorrhoeae-and-trichomonas-vaginalis-among-women-attending-antenatal-well-woman-and-sexual-health-clinics-in-papua-new-guinea-a-cross-sectional-study
#5
Lisa M Vallely, Pamela Toliman, Claire Ryan, Glennis Rai, Johanna Wapling, Josephine Gabuzzi, Joyce Allen, Christine Opa, Gloria Munnull, Petronia Kaima, Benny Kombuk, Antonia Kumbia, Zure Kombati, Greg Law, Angela Kelly-Hanku, Handan Wand, Peter M Siba, Glen D L Mola, John M Kaldor, Andrew J Vallely
OBJECTIVE: Papua New Guinea (PNG) has among the highest estimated prevalences of genital Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) of any country in the Asia-Pacific region. Diagnosis and treatment of these infections have relied on the WHO-endorsed syndromic management strategy that uses clinical presentation without laboratory confirmation to make treatment decisions. We evaluated the performance of this strategy in clinical settings in PNG...
December 29, 2017: BMJ Open
https://www.readbyqxmd.com/read/29282865/membrane-localization-of-a-myb3-transcription-factor-regulated-by-a-tvcyp1-cyclophilin-in-the-parasitic-protozoan-trichomonas-vaginalis
#6
Chien-Hsin Chu, Yu-Hsin Huang, Hsing-Wei Liu, Hong-Ming Hsu, Jung-Hsiang Tai
In Trichomonas vaginalis, a TvCyP1 cyclophilin was previously demonstrated to regulate the nuclear translocation of Myb1 and Myb3, which respectively repress and activate transcription of an adhesion protein ap65-1 gene. In the present study, TvCyP1 was found to bind to Myb3 at sites spanning 54 Gly-Pro55 and 72 Gly-Pro73 with differential affinities. When Gly54 and Gly72 in Myb3 were both mutated, the mutant protein was restrained on outer membranes of hydrogenosomes and some cytoplasmic vesicles. In purified Myb3 protein complex, a high-molecular-weight Myb3-interacting protein (Myb3IPhmw ) and a 72-kDa heat shock protein (TvHSP72) were identified and characterized, with direct binding of Myb3 to Myb3IPhmw and TvHSP72 confirmed in vitro...
December 28, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29262291/diagnosis-of-chlamydia-trachomatis-neisseria-gonorrhoeae-trichomonas-vaginalis-and-mycoplasma-genitalium-an-observational-study-of-testing-patterns-prevalence-and-co-infection-rates-in-northern-new-zealand
#7
Arlo Upton, Liselle Bissessor, Peter Lowe, Xiaoying Wang, Gary McAuliffe
Background: This study sought to determine community prevalence, epidemiology and testing patterns for sexually transmissible infections (STI) in northern New Zealand. Methods: A total of 2643 samples submitted for STI testing between 26 November 2015 and 7 December 2015 underwent analysis by Aptima Combo 2 (Hologic, San Diego, CA, USA), Trichomonas vaginalis (TV), and Mycoplasma genitalium (MG) assays. Results were analysed by patient demographics. Results: Four hundred and eleven pathogens were detected from 359 patients, with Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), TV, and MG detected in 178 (6...
December 21, 2017: Sexual Health
https://www.readbyqxmd.com/read/29247635/trichomonas-vaginalis-is-most-frequently-detected-in-women-at-the-age-of-peri-pre-menopause-an-unusual-pattern-for-a-sexually-transmitted-pathogen
#8
Shlomo M Stemmer, Eli Mordechai, Martin E Adelson, Scott E Gygax, David W Hilbert
BACKGROUND: Trichomonas vaginalis is the most common non-viral sexually-transmitted infection (STI). However, as it is not a reportable disease in the United States, there is limited information on the age of infected individuals and their geographic distribution. OBJECTIVE: To evaluate the detection rates of Trichomonas vaginalis infection compared to Chlamydia trachomatis by age and state in a commercial laboratory setting . METHODS: Quantitative Real-time PCRs (qPCRs) were used to detect the presence of T...
December 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29246195/co-infection-of-sexually-transmitted-pathogens-and-human-papillomavirus-in-cervical-samples-of-women-of-brazil
#9
Aline Teixeira Amorim, Lucas Miranda Marques, Guilherme Barreto Campos, Tássia Neves Lobão, Vanesca de Souza Lino, Ricardo Cesar Cintra, Maria Antonieta Andreoli, Luisa Lina Villa, Enrique Boccardo, Antonio Carlos Ricardo Braga Junior, Rossana Verónica Mendoza López, Djanilson Barbosa Dos Santos, Gerson Maciel de Souza, Carla Cristina Romano, Jorge Timenetsky
BACKGROUND: Some sexually transmitted infectious agents, such as Chlamydia trachomatis and Herpes simplex, cause local inflammation, and could contribute to Human Papillomavirus (HPV) and cervical lesion progression. Thus, the aim of this study was to determine any association between the presence of microorganisms of gynecological importance, sexual behavior, clinical and demographical variables to the development and progress of cervical lesions. METHODS: One hundred and thirty-two women between 14 and 78 years and living at Vitória da Conquista, Bahia, Brazil, were included (62 individuals with cervical lesions and 70 without lesions)...
December 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29240635/the-etiology-of-male-urethral-discharge-in-zimbabwe-results-from-the-zimbabwe-sti-etiology-study
#10
Cornelis A Rietmeijer, More Mungati, Anna Machiha, Owen Mugurungi, Vitalis Kupara, Luanne Rodgers, Peter H Kilmarx, Amy Herman Roloff, Elizabeth Gonese, Beth A Tippett-Barr, Gerald Shambira, David A Lewis, H Hunter Handsfield, Mufuta Tshimanga
INTRODUCTION: Sexually transmitted infections (STIs) are managed syndromically in most developing countries. In Zimbabwe, men presenting with urethral discharge are treated with a single intramuscular dose of kanamycin or ceftriaxone in combination with a week's course of oral doxycycline. This study was designed to assess the current etiology of urethral discharge and other STIs to inform current syndromic management regimens. METHODS: We conducted a study among 200 men with urethral discharge presenting at 6 regionally diverse STI clinics in Zimbabwe...
January 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29237446/trichomoniasis-and-associated-co-infections-of-the-genital-tract-among-pregnant-women-presenting-at-two-hospitals-in-ghana
#11
Richard H Asmah, Harriet N A Blankson, Kekeli A Seanefu, Noah Obeng-Nkrumah, Georgina Awuah-Mensah, Momodou Cham, Patrick F Ayeh-Kumi
BACKGROUND: Trichomonas vaginalis (TV) infection is the most prevalent non-viral sexually transmitted pathogen worldwide. Among pregnant women, the infection may cause adverse birth outcomes such as premature rupture of membranes and premature labour. In view of the paucity of information relating to TV among Ghanaian pregnant women, this study investigated its prevalence and associated co-infections among pregnant women. METHODS: High vaginal swabs were obtained from 99 pregnant women using sterile cotton swab sticks...
December 13, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/29233912/dynamic-secretome-of-trichomonas-vaginalis-case-study-of-%C3%AE-amylases
#12
Jitka Štáfková, Petr Rada, Dionigia Meloni, Vojtěch Žárský, Tamara Smutná, Nadine Zimmann, Karel Harant, Petr Pompach, Ivan Hrdý, Jan Tachezy
The secretion of virulence factors by parasitic protists into the host environment plays a fundamental role in multifactorial host-parasite interactions. Several effector proteins are known to be secreted by Trichomonas vaginalis, a human parasite of the urogenital tract. However, a comprehensive profiling of the T. vaginalis secretome remains elusive, as do the mechanisms of protein secretion. In this study, we used high-resolution label-free quantitative MS to analyze the T. vaginalis secretome, considering that secretion is a time- and temperature-dependent process, to define the cutoff for secreted proteins...
December 12, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29223972/intravaginal-boric-acid-is-it-an-alternative-therapeutic-option-for-vaginal-trichomoniasis
#13
Nicola Thorley, Jonathan Ross
OBJECTIVES: Trichomoniasis, caused by Trichomonas vaginalis (TV), is the most common curable sexually transmitted infection worldwide. Current guidance in the UK is to treat TV with a nitroimidazole antibiotic. The high prevalence of TV, high rate of antibiotic resistance and limited tolerability to nitroimidazoles suggest that alternative treatment regimens are needed. Intravaginal boric acid (BA) has been used safely for the treatment of candida vulvovaginitis and bacterial vaginosis, and in vitro studies suggest BA is active against TV...
December 9, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/29223965/advancing-prevention-of-sexually-transmitted-infections-through-point-of-care-testing-target-product-profiles-and-landscape-analysis
#14
Igor Toskin, Maurine Murtagh, Rosanna W Peeling, Karel Blondeel, Joanna Cordero, James Kiarie
OBJECTIVES: Advancing the field of point-of-care testing (POCT) for STIs can rapidly and substantially improve STI control and prevention by providing targeted, essential STI services (case detection and screening). POCT enables definitive diagnosis and appropriate treatment in a single visit and home and community-based testing. METHODS: Since 2014, the WHO Department of Reproductive Health and Research, in collaboration with technical partners, has completed four landscape analyses of promising diagnostics for use at or near the point of patient care to detect syphilis, Neisseria gonorrhoeae, Chlamydia trachomatis, Trichomonas vaginalis and the human papillomavirus...
December 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/29222644/membrane-shed-vesicles-from-the-parasite-trichomonas-vaginalis-characterization-and-their-association-with-cell-interaction
#15
Yesica R Nievas, Veronica M Coceres, Victor Midlej, Wanderley de Souza, Marlene Benchimol, Antonio Pereira-Neves, Ajay A Vashisht, James A Wohlschlegel, Patricia J Johnson, Natalia de Miguel
Trichomonas vaginalis is a common sexually transmitted parasite that colonizes the human urogenital tract, where it remains extracellular and adheres to epithelial cells. Infections range from asymptomatic to highly inflammatory, depending on the host and the parasite strain. Despite the serious consequences associated with trichomoniasis disease, little is known about parasite or host factors involved in attachment of the parasite-to-host epithelial cells. Here, we report the identification of microvesicle-like structures (MVs) released by T...
December 8, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29216562/substituted-carbamothioic-amine-1-carbothioic-thioanhydrides-as-novel-trichomonicidal-fungicides-design-synthesis-and-biology
#16
Dhanaraju Mandalapu, Bhavana Kushwaha, Sonal Gupta, Shagun Krishna, Nidhi Srivastava, Mahendra Shukla, Pratiksha Singh, Bhavana S Chauhan, Ravi Goyani, Jagdamba P Maikhuri, Koneni V Sashidhara, Brijesh Kumar, Renu Tripathi, Praveen K Shukla, Mohammad I Siddiqi, Jawahar Lal, Gopal Gupta, Vishnu L Sharma
Sexually transmitted diseases like trichomoniasis along with opportunistic fungal infections like candidiasis are major global health burden in female reproductive health. In this context a novel non-nitroimidazole class of substituted carbamothioic amine-1-carbothioic thioanhydride series was designed, synthesized, evaluated for trichomonacidal and fungicidal activities, and was found to be more active than the standard drug Metronidazole (MTZ). Compounds were trichomonicidal in the MIC ranges of 4.77-294...
November 23, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29210158/screening-for-human-papillomavirus-cervical-cytological-abnormalities-and-associated-risk-factors-in-hiv-positive-and-hiv-negative-women-in-rwanda
#17
M F Mukanyangezi, V Sengpiel, O Manzi, G Tobin, S Rulisa, E Bienvenu, D Giglio
OBJECTIVES: Cervical cancer is the major cause of death from cancer in Africa. We wanted to assess the prevalence of human papillomavirus (HPV) infections and associated risk factors and to determine whether HPV testing could serve as a screening method for squamous intraepithelial lesions (SILs) in Rwanda. We also wanted to obtain a broader understanding of the underlying risk factors for the establishment of HPV infection in Rwanda. METHODS: A total of 206 HIV-positive women, 172 HIV-negative women and 22 women with unknown HIV status were recruited at the University Teaching Hospitals of Kigali (UTHK) and of Butare (UTHB) in Rwanda...
December 6, 2017: HIV Medicine
https://www.readbyqxmd.com/read/29198954/metabolic-reprogramming-of-hydrogenosomal-amino-acids-in-trichomonas-vaginalis-under-glucose-restriction
#18
Kuo-Yang Huang, Seow-Chin Ong, Chih-Ching Wu, Chia-Wei Hsu, Hsin-Chung Lin, Yi-Kai Fang, Wei-Hung Cheng, Po-Jung Huang, Cheng-Hsun Chiu, Petrus Tang
BACKGROUND: Glucose is the major energy source that is converted to pyruvate for ATP generation in the trichomonad hydrogenosome. Under glucose restriction (GR), the regulation of amino acids metabolism is crucial for trichomonad growth and survival. RNA-sequencing (RNA-seq) analysis has been used to identify differentially expressed genes in Trichomonas vaginalis under GR, leading to significant advances in understanding adaptive responses of amino acid metabolism to GR. However, the levels of amino acid metabolites modulated by GR are unknown in T...
November 21, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/29198180/converging-epidemics-of-sexually-transmitted-infections-and-bacterial-vaginosis-in-southern-african-female-adolescents-at-risk-of-hiv
#19
Shaun L Barnabas, Smritee Dabee, Jo-Ann S Passmore, Heather B Jaspan, David A Lewis, Shameem Z Jaumdally, Hoyam Gamieldien, Lindi Masson, Etienne Muller, Venessa D Maseko, Nonhlanhla Mkhize, Zizipho Mbulawa, Anna-Lise Williamson, Clive M Gray, Thomas J Hope, Francesca Chiodi, Janan Dietrich, Glenda Gray, Linda-Gail Bekker
Adolescents in Africa are at high risk for HIV infection, other sexually transmitted infections (STIs) and bacterial vaginosis (BV). Since behavior and burden of STIs/BV may influence HIV risk, behavioral risk factors and prevalence of STIs/BV were compared in HIV-seronegative adolescent females (n = 298; 16-22 years) from two South African communities (Soweto and Cape Town). STIs ( Chlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, Mycoplasma genitalium, herpes simplex virus (HSV)-1, HSV-2, Treponema pallidum, and Haemophilus ducreyi) were detected by multiplex polymerase chain reaction, human papillomavirus (HPV) by Roche Linear Array, and BV by Nugent scoring...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/29194776/endosymbiosis-and-its-significance-in-dermatology
#20
REVIEW
Katarzyna Kubiak, Hanna Sielawa, Wenchieh Chen, Ewa Dzika
Proposed at the beginning of the 20th to explain the origin of eukaryotic organelles from prokaryotes, endosymbiosis is now medically defined by various interaction patterns between microorganisms and their residing hosts, best exemplified by the bacterial endosymbiont Wolbachia identified in arthropods and filarial nematodes, which can influence normal development, reproduction, survival, and transmission of the hosts. Based on the transmission modes, vertical or horizontal, and the function of the endosymbionts, the host-symbiont dependence can be divided into primary or secondary...
December 1, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
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