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Nagata M, Tome A, White K, Wilkens LR, Park SY, Le Marchand L, Haiman C, Hernandez BY. No Association of Trichomonas vaginalis Seropositivity with Advanced Prostate Cancer Risk in the Multiethnic Cohort: A Nested Case-Control Study. Cancers (Basel) 2023; 15:5194. [PMID: 37958367 PMCID: PMC10648031 DOI: 10.3390/cancers15215194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/20/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
The potential involvement of a sexually transmitted agent has been suggested to contribute to the high number of prostate cancers in the United States and worldwide. We investigated the relationship of Trichomonas vaginalis seropositivity with prostate cancer risk in a nested case-control study within the Multiethnic Cohort in Hawaii and California using blood samples collected prior to cancer diagnoses. Incident cases of advanced prostate cancer (intermediate- to high-grade based on Gleason score ≥ 7 and/or disease spread outside the prostate) were matched to controls by age, ethnicity, and the date of blood collection. T. vaginalis serostatus was measured using an ELISA detecting IgG antibodies against a recombinant T. vaginalis α-actinin protein. Seropositivity to T. vaginalis was observed in 35 of 470 (7.4%) cases and 26 of 470 (5.5%) controls (unadjusted OR = 1.47, 95% CI 0.82-2.64; adjusted OR = 1.31, 95% CI 0.67-2.53). The association was similarly not significant when cases were confined to extraprostatic tumors having regional or distant spread (n = 121) regardless of grade (unadjusted OR = 1.37, 95% CI 0.63-3.01; adjusted OR = 1.20, 95% CI 0.46-3.11). The association of T. vaginalis with prostate cancer risk did not vary by aspirin use. Our findings do not support a role for T. vaginalis in the etiology of advanced prostate cancer.
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Affiliation(s)
- Michelle Nagata
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
| | - Anne Tome
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
| | - Kami White
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
| | - Lynne R. Wilkens
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
| | - Song-Yi Park
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
| | - Loïc Le Marchand
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
| | - Christopher Haiman
- Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, 1975 Zonal Ave., Los Angeles, CA 90033, USA;
| | - Brenda Y. Hernandez
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813, USA; (A.T.); (K.W.); (L.R.W.); (S.-Y.P.); (L.L.M.); (B.Y.H.)
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Sharma M, Lozano-Amado D, Chowdhury D, Singh U. Extracellular Vesicles and Their Impact on the Biology of Protozoan Parasites. Trop Med Infect Dis 2023; 8:448. [PMID: 37755909 PMCID: PMC10537256 DOI: 10.3390/tropicalmed8090448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
Extracellular vesicles (EVs) are lipid-membrane-bound structures produced naturally by all cells and have a variety of functions. EVs act as vehicles for transporting important molecular signals from one cell to another. Several parasites have been shown to secrete EVs, and their biological functions have been extensively studied. EVs have been shown to facilitate communication with the host cells (such as modulation of the host's immune system or promoting attachment and invasion into the host cells) or for communication between parasitic cells (e.g., transferring drug-resistance genes or factors modulating stage conversion). It is clear that EVs play an important role in host-parasite interactions. In this review, we summarized the latest research on the EVs secreted by protozoan parasites and their role in host-parasite and parasite-parasite communications.
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Affiliation(s)
- Manu Sharma
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
| | - Daniela Lozano-Amado
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
| | - Debabrata Chowdhury
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
| | - Upinder Singh
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305, USA; (M.S.); (D.L.-A.); (D.C.)
- Department of Microbiology and Immunology, School of Medicine, Stanford University, Stanford, CA 94305, USA
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Abstract
Trichomoniasis is the most common nonviral sexually transmitted infection worldwide. It has been associated with a variety of adverse sexual and reproductive health outcomes for both men and women. In this review, the authors discuss updates in its epidemiology, pathophysiology, clinical significance, diagnosis, and treatment.
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Alderete JF, Chan H. Point-of-Care Diagnostic for Trichomonas vaginalis, the Most Prevalent, Non-Viral Sexually Transmitted Infection. Pathogens 2023; 12:pathogens12010077. [PMID: 36678425 PMCID: PMC9863549 DOI: 10.3390/pathogens12010077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
A point-of-care (POC) diagnostic is needed for both women and men to establish universal screening and surveillance for the number one, non-viral sexually transmitted infection (STI) caused by Trichomonas vaginalis. We developed a POC diagnostic for this STI using the MedMira Rapid Vertical Flow (RVF®) Technology test cartridge with a membrane that includes a Vertical procedural/reagent control line (referred to as CVL) and spotted with 1 µg of a 72.4-kDa truncated version of α-actinin called ACT::SOE3. This protein is a specific diagnostic target for antibody in sera of individuals with trichomoniasis. Serum antibody to ACT::SOE3 is a positive reaction with the test spot. Specificity of ACT::SOE3 was revealed with monoclonal antibodies (MAbs) generated to ACT::SOE3. Addition of negative control serum with MAb 67B reactive to ACT::SOE3 shows detection of both ACT::SOE3 and the CVL. Only positive sera of individuals had antibody reactive with ACT::SOE3 and detected the presence of the spot and the CVL. Negative control sera were unreactive with ACT::SOE3 and only showed the presence of the CVL. Importantly, to show proof-of-principle for POC application, ACT::SOE3 was detected with the positive patient sera spiked with whole blood. Finally, packaged cartridges stored with desiccant packs at 37 °C for one year gave identical results with the positive and negative human sera. Our results show the validity of this new POC serodiagnostic for this STI.
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Affiliation(s)
- John F. Alderete
- School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA
- Correspondence:
| | - Hermes Chan
- MedMira, Suite 1, 155 Chain Lake Drive, Halifax, NS B3S 1B3, Canada
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Eligio García L, Crisóstomo Vázquez MDP, Maravelez Acosta VA, Soria Guerrero M, Cortés Campos A, Jiménez Cardoso E. Trypanosoma cruzi Antigenic Proteins Shared with Acute Lymphoblastic Leukemia and Neuroblastoma. Pharmaceuticals (Basel) 2022; 15:1421. [PMID: 36422551 PMCID: PMC9693088 DOI: 10.3390/ph15111421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 02/19/2024] Open
Abstract
Background. Research studies indicate that immunization with protein extracts of Trypanosoma cruzi, the protozoan parasite that causes Chagas disease, prevents the appearance of tumors in 60% of mice injected with the murine lung carcinoma tumor line. The molecular basis of this process is unknown, although the presence of specific antigens in tumor cells and on the surface of T. cruzi suggests an antiparasitic immune response, with an effective cross-reaction against cancer cells, hence the importance to identify the antigens involved and determine their potential as target cells in anticancer therapy. Aim. This study aimed to determine the presence of antigenic proteins of T. cruzi shared with acute lymphoblastic leukemia and neuroblastoma cells. Material and methods. To achieve this, polyclonal antibodies against T. cruzi were developed in rabbits, and reactivity was determined with protein extracts of acute lymphoblastic leukemia cells and neuroblastoma. The immunodetection of five different strains of T. cruzi against anti-T. cruzi polyclonal antibodies was also performed. Conclusion. The study allows the knowledge of the immunological interactions between cancer and parasites to be expanded and, therefore, contributes to the design of more and better projects that improve the therapeutic strategies applied in oncology.
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Affiliation(s)
| | | | | | | | | | - Enedina Jiménez Cardoso
- Laboratorio de Investigación en Parasitología, Hospital Infantil de México Federico Gómez (HIMFG), Dr. Márquez 162. Col Doctores, Cuauhtémoc, México City 06720, Mexico
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Lawson JS, Glenn WK. Multiple pathogens and prostate cancer. Infect Agent Cancer 2022; 17:23. [PMID: 35637508 PMCID: PMC9150368 DOI: 10.1186/s13027-022-00427-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 03/18/2022] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The aim of this review is to consider whether multiple pathogens have roles in prostate cancer. METHODS We have reviewed case control studies in which infectious pathogens in prostate cancer were compared to normal and benign prostate tissues. We also reviewed additional evidence from relevant published articles. RESULTS We confirmed that high risk human papilloma viruses are a probable cause of prostate cancer. We judged Escherichia coli, Cutibacterium acnes, Neisseria gonorrhoea, Herpes simplex, Epstein Barr virus and Mycoplasmas as each having possible but unproven roles in chronic prostatic inflammation and prostate cancer. We judged Cytomegalovirus, Chlamydia trachomatis, Trichomonas vaginalis and the Polyoma viruses as possible but unlikely to have a role in prostate cancer. CONCLUSIONS AND ACTIONS The most influential cause of prostate cancer appears to be infection induced chronic inflammation. Given the high prevalence of prostate cancer it is important for action to can be taken without waiting for additional conclusive evidence. These include: 1. Encouragement of all boys (as well as girls) to have HPV vaccines 2. The vigorous use of antibiotics to treat all bacterial pathogens identified in the urogenital tract 3. The use of antiviral medications to control herpes infections 4. Education about safe sexual practices.
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Affiliation(s)
- James S. Lawson
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, 2052 Australia
| | - Wendy K. Glenn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, 2052 Australia
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Kim YH, Ahn HJ, Kim D, Nam HW. Spatiotemporal Clusters and Trend of Trichomonas vaginalis Infection in Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2022; 60:97-107. [PMID: 35500891 PMCID: PMC9058277 DOI: 10.3347/kjp.2022.60.2.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/16/2022] [Indexed: 11/23/2022]
Abstract
This study was done to provide an overview of the latest trichomoniasis status in Korea by finding disease clusters and analyzing temporal trends during 2012–2020. Data were obtained from the Health Insurance Review & Assessment Service (HIRA) of Korea. SaTScan and Joinpoint programs were used for statistical analyses. Gyeonggi-do had the highest average population and highest number of cases. The high incidence of T. vaginalis infections were observed among women aged 40–49 and 30–39 years (33,830/year and 33,179/year, respectively). Similarly, the 40–49 and 30–39 age group in men showed the highest average cases (1,319/year and 1,282/year, respectively). Jeollabuk-do was the most likely cluster, followed by Busan/Gyeongsangnam-do/Ulsan/Daegu and Jeju-do and Gwangju. Urban and rural differences were prominent. Trichomoniasis has decreased significantly in most clusters, except for Incheon. Trichomoniasis was decreasing in women recently after peaking around 2014. Men showed different trends according to age. Trichomoniasis was increasing in the 10–39 age groups, but decreasing in the 40–59 age groups. This study might provide an analytic basis for future health measures, policy-makers, and health authorities in developing effective system for prevention of trichomoniasis.
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Affiliation(s)
- Yeong Hoon Kim
- Department of Ophthalmology, College of Medicine, Catholic University of Korea, Seoul 06591,
Korea
| | - Hye-Jin Ahn
- Department of Parasitology, College of Medicine, Catholic University of Korea, Seoul 06591,
Korea
| | - Dongjae Kim
- Department of Biomedicine Health Science, College of Medicine, The Catholic University of Korea, Seoul 06591,
Korea
| | - Ho-Woo Nam
- Department of Parasitology, College of Medicine, Catholic University of Korea, Seoul 06591,
Korea
- Corresponding author ()
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Kissinger PJ, Gaydos CA, Seña AC, Scott McClelland R, Soper D, Secor WE, Legendre D, Workowski KA, Muzny CA. Diagnosis and Management of Trichomonas vaginalis: Summary of Evidence Reviewed for the 2021 Centers for Disease Control and Prevention Sexually Transmitted Infections Treatment Guidelines. Clin Infect Dis 2022; 74:S152-S161. [PMID: 35416973 PMCID: PMC9006969 DOI: 10.1093/cid/ciac030] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Trichomonas vaginalis is likely the most prevalent nonviral sexually transmitted infection, affecting an estimated 3.7 million women and men in the United States. Health disparities are prominent in the epidemiology of trichomoniasis, as African Americans are >4 times more likely to be infected than persons of other races. Since publication of the 2015 Centers for Disease Control and Prevention sexually transmitted diseases treatment guidelines, additional data have bolstered the importance of T. vaginalis infection sequelae in women, including increased risk of human immunodeficiency virus (HIV) acquisition, cervical cancer, preterm birth, and other adverse pregnancy outcomes. Less is known about the clinical significance of infection in men. Newly available diagnostic methods, including point-of-care assays and multiple nucleic acid amplification tests, can be performed on a variety of genital specimens in women and men, including urine, allowing more accurate and convenient testing and screening of those at risk for infection. Repeat and persistent infections are common in women; thus, rescreening at 3 months after treatment is recommended. In vitro antibiotic resistance to 5-nitroimidazole in T. vaginalis remains low (4.3%) but should be monitored. High rates of T. vaginalis among sexual partners of infected persons suggest a role for expedited partner treatment. A randomized controlled trial in HIV-uninfected women demonstrated that multidose metronidazole 500 mg twice daily for 7 days reduced the proportion of women with Trichomonas infection at 1 month test of cure compared with women receiving single-dose therapy (2 g). The 2-g single-dose oral metronidazole regimen remains the preferred treatment in men.
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Affiliation(s)
- Patricia J Kissinger
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA
| | - Charlotte A Gaydos
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Arlene C Seña
- Division of Infectious Diseases, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - R Scott McClelland
- Departments of Medicine, Epidemiology, and Global Health, University of Washington, Seattle, Washington, USA
| | - David Soper
- Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - W Evan Secor
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Davey Legendre
- Comprehensive Pharmacy Services, Woodstock, Georgia, USA
| | - Kimberly A Workowski
- Division of Sexually Transmitted Diseases Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
- Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Christina A Muzny
- Division of Sexually Transmitted Diseases Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
- Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Inflammation and Prostate Cancer: A Multidisciplinary Approach to Identifying Opportunities for Treatment and Prevention. Cancers (Basel) 2022; 14:cancers14061367. [PMID: 35326519 PMCID: PMC8946208 DOI: 10.3390/cancers14061367] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/03/2022] [Accepted: 03/06/2022] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer is a major cause of disease for men globally. Inflammation, an established hallmark of cancer, is frequently observed in the prostate, though its contribution to prostate cancer risks and outcomes is not fully understood. Prostate cancer is biologically and clinically heterogeneous, and there is now evidence that inflammation and immunological characteristics vary by the genomic and mutational landscape of the tumor. Moreover, it is now recognized that risk factor profiles vary between tumor subgroups, as defined by histopathological and molecular features. Here, we provide a review centered around the relationship between inflammation and prostate cancer, with a consideration of molecular tumor features and a particular focus on the advanced and lethal stages of disease. We summarize findings from epidemiological studies of the etiology and role of inflammation in prostate cancer. We discuss the pathology of prostate inflammation, and consider approaches for assessing the tumor immune microenvironment in epidemiological studies. We review emerging clinical therapies targeting immune biology within the context of prostate cancer. Finally, we consider potentially modifiable risk factors and corresponding lifestyle interventions that may affect prostate inflammation, impacting outcomes. These emerging insights will provide some hints for the development of treatment and prevention strategies for advanced and lethal prostate cancer.
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Coceres VM, Iriarte LS, Miranda-Magalhães A, Santos de Andrade TA, de Miguel N, Pereira-Neves A. Ultrastructural and Functional Analysis of a Novel Extra-Axonemal Structure in Parasitic Trichomonads. Front Cell Infect Microbiol 2021; 11:757185. [PMID: 34858875 PMCID: PMC8630684 DOI: 10.3389/fcimb.2021.757185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/19/2021] [Indexed: 12/28/2022] Open
Abstract
Trichomonas vaginalis and Tritrichomonas foetus are extracellular flagellated parasites that inhabit humans and other mammals, respectively. In addition to motility, flagella act in a variety of biological processes in different cell types, and extra-axonemal structures (EASs) have been described as fibrillar structures that provide mechanical support and act as metabolic, homeostatic, and sensory platforms in many organisms. It has been assumed that T. vaginalis and T. foetus do not have EASs. However, here, we used complementary electron microscopy techniques to reveal the ultrastructure of EASs in both parasites. Such EASs are thin filaments (3-5 nm diameter) running longitudinally along the axonemes and surrounded by the flagellar membrane, forming prominent flagellar swellings. We observed that the formation of EAS increases after parasite adhesion on the host cells, fibronectin, and precationized surfaces. A high number of rosettes, clusters of intramembrane particles that have been proposed as sensorial structures, and microvesicles protruding from the membrane were observed in the EASs. Our observations demonstrate that T. vaginalis and T. foetus can connect to themselves by EASs present in flagella. The protein VPS32, a member of the ESCRT-III complex crucial for diverse membrane remodeling events, the pinching off and release of microvesicles, was found in the surface as well as in microvesicles protruding from EASs. Moreover, we demonstrated that the formation of EAS also increases in parasites overexpressing VPS32 and that T. vaginalis-VPS32 parasites showed greater motility in semisolid agar. These results provide valuable data about the role of the flagellar EASs in the cell-to-cell communication and pathogenesis of these extracellular parasites.
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Affiliation(s)
- Veronica M Coceres
- Laboratorio de Parásitos Anaerobios, Instituto Tecnológico Chascomús (INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de General San Martín (CONICET-UNSAM), Chascomús, Argentina
| | - Lucrecia S Iriarte
- Laboratorio de Parásitos Anaerobios, Instituto Tecnológico Chascomús (INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de General San Martín (CONICET-UNSAM), Chascomús, Argentina
| | | | | | - Natalia de Miguel
- Laboratorio de Parásitos Anaerobios, Instituto Tecnológico Chascomús (INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de General San Martín (CONICET-UNSAM), Chascomús, Argentina
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Huang PJ, Huang CY, Li YX, Liu YC, Chu LJ, Yeh YM, Cheng WH, Chen RM, Lee CC, Chen LC, Lin HC, Chiu SF, Lin WN, Lyu PC, Tang P, Huang KY. Dissecting the Transcriptomes of Multiple Metronidazole-Resistant and Sensitive Trichomonas vaginalis Strains Identified Distinct Genes and Pathways Associated with Drug Resistance and Cell Death. Biomedicines 2021; 9:biomedicines9121817. [PMID: 34944632 PMCID: PMC8698965 DOI: 10.3390/biomedicines9121817] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 12/20/2022] Open
Abstract
Trichomonas vaginalis is the causative agent of trichomoniasis, the most prevalent non-viral sexually transmitted infection worldwide. Metronidazole (MTZ) is the mainstay of anti-trichomonal chemotherapy; however, drug resistance has become an increasingly worrying issue. Additionally, the molecular events of MTZ-induced cell death in T. vaginalis remain elusive. To gain insight into the differential expression of genes related to MTZ resistance and cell death, we conducted RNA-sequencing of three paired MTZ-resistant (MTZ-R) and MTZ-sensitive (MTZ-S) T. vaginalis strains treated with or without MTZ. Comparative transcriptomes analysis identified that several putative drug-resistant genes were exclusively upregulated in different MTZ-R strains, such as ATP-binding cassette (ABC) transporters and multidrug resistance pumps. Additionally, several shared upregulated genes among all the MTZ-R transcriptomes were not previously identified in T. vaginalis, such as 5′-nucleotidase surE and Na+-driven multidrug efflux pump, which are a potential stress response protein and a multidrug and toxic compound extrusion (MATE)-like protein, respectively. Functional enrichment analysis revealed that purine and pyrimidine metabolisms were suppressed in MTZ-S parasites upon drug treatment, whereas the endoplasmic reticulum-associated degradation (ERAD) pathway, proteasome, and ubiquitin-mediated proteolysis were strikingly activated, highlighting the novel pathways responsible for drug-induced stress. Our work presents the most detailed analysis of the transcriptional changes and the regulatory networks associated with MTZ resistance and MTZ-induced signaling, providing insights into MTZ resistance and cell death mechanisms in trichomonads.
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Affiliation(s)
- Po-Jung Huang
- Department of Biomedical Sciences, Chang Gung University, Taoyuan City 333, Taiwan;
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taoyuan City 333, Taiwan; (Y.-M.Y.); (C.-C.L.)
| | - Ching-Yun Huang
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei City 114, Taiwan; (C.-Y.H.); (S.-F.C.)
- Host-Parasite Interactions Laboratory, National Defense Medical Center, Taipei City 114, Taiwan
| | - Yu-Xuan Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-X.L.); (L.-J.C.); (P.T.)
| | - Yi-Chung Liu
- Institute of Bioinformatics and Structural Biology, Department of Life Science, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-C.L.); (P.-C.L.)
| | - Lichieh-Julie Chu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-X.L.); (L.-J.C.); (P.T.)
- Molecular Medicine Research Center, Chang Gung University, Taoyuan City 333, Taiwan
- Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan City 333, Taiwan
| | - Yuan-Ming Yeh
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taoyuan City 333, Taiwan; (Y.-M.Y.); (C.-C.L.)
| | - Wei-Hung Cheng
- Department of Medical Laboratory Science, College of Medicine, I-Shou University, Kaohsiung City 824, Taiwan;
| | - Ruei-Ming Chen
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei City 114, Taiwan; (R.-M.C.); (H.-C.L.)
| | - Chi-Ching Lee
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taoyuan City 333, Taiwan; (Y.-M.Y.); (C.-C.L.)
- Department of Computer Science and Information Engineering, Chang Gung University, Taoyuan City 333, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan;
| | - Hsin-Chung Lin
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei City 114, Taiwan; (R.-M.C.); (H.-C.L.)
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City 114, Taiwan
| | - Shu-Fang Chiu
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei City 114, Taiwan; (C.-Y.H.); (S.-F.C.)
- Host-Parasite Interactions Laboratory, National Defense Medical Center, Taipei City 114, Taiwan
- Department of Inspection, Taipei City Hospital, Renai Branch, Taipei City 114, Taiwan
| | - Wei-Ning Lin
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City 242, Taiwan;
| | - Ping-Chiang Lyu
- Institute of Bioinformatics and Structural Biology, Department of Life Science, National Tsing Hua University, Hsinchu 300, Taiwan; (Y.-C.L.); (P.-C.L.)
| | - Petrus Tang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-X.L.); (L.-J.C.); (P.T.)
| | - Kuo-Yang Huang
- Host-Parasite Interactions Laboratory, National Defense Medical Center, Taipei City 114, Taiwan
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City 114, Taiwan
- Correspondence: ; Tel.: +886-2-87923100 (ext. 18564)
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Kim SS, Kim KS, Han IH, Kim Y, Bang SS, Kim JH, Kim YS, Choi SY, Ryu JS. Proliferation of Mouse Prostate Cancer Cells Inflamed by Trichomonas vaginalis. THE KOREAN JOURNAL OF PARASITOLOGY 2021; 59:547-556. [PMID: 34974661 PMCID: PMC8721307 DOI: 10.3347/kjp.2021.59.6.547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 12/23/2022]
Abstract
Our objective was to investigate whether inflammatory microenvironment induced by Trichomonas vaginalis infection can stimulate proliferation of prostate cancer (PCa) cells in vitro and in vivo mouse experiments. The production of CXCL1 and CCL2 increased when cells of the mouse PCa cells (TRAMP-C2 cell line) were infected with live T. vaginalis. T. vaginalis-conditioned medium (TCM) prepared from co-culture of PCa cells and T. vaginalis increased PCa cells migration, proliferation and invasion. The cytokine receptors (CXCR2, CCR2, gp130) were expressed higher on the PCa cells treated with TCM. Pretreatment of PCa cells with antibodies to these cytokine receptors significantly reduced the proliferation, mobility and invasiveness of PCa cells, indicating that TCM has its effect through cytokine-cytokine receptor signaling. In C57BL/6 mice, the prostates injected with T. vaginalis mixed PCa cells were larger than those injected with PCa cells alone after 4 weeks. Expression of epithelial-mesenchymal transition markers and cyclin D1 in the prostate tissue injected with T. vaginalis mixed PCa cells increased than those of PCa cells alone. Collectively, it was suggested that inflammatory reactions by T. vaginalis-stimulated PCa cells increase the proliferation and invasion of PCa cells through cytokine-cytokine receptor signaling pathways.
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Affiliation(s)
- Sang-Su Kim
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul 04763,
Korea
- Department of Biomedical Science, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763,
Korea
| | - Kyu-Shik Kim
- Department of Urology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri 11923,
Korea
| | - Ik-Hwan Han
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul 04763,
Korea
- Department of Biomedical Science, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763,
Korea
| | - Yeseul Kim
- Department of Pathology, Hanyang University College of Medicine, Seoul 04763,
Korea
| | - Seong Sik Bang
- Department of Pathology, Hanyang University College of Medicine, Seoul 04763,
Korea
| | - Jung-Hyun Kim
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul 04763,
Korea
- Department of Biomedical Science, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763,
Korea
| | - Yong-Suk Kim
- Department of Biochemistry and Molecular Biology, Hanyang University College of Medicine, Seoul 04763,
Korea
| | - Soo-Yeon Choi
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul 04763,
Korea
| | - Jae-Sook Ryu
- Department of Environmental Biology and Medical Parasitology, Hanyang University College of Medicine, Seoul 04763,
Korea
- Department of Biomedical Science, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763,
Korea
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13
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Saleh NE, Alhusseiny SM, El-Zayady WM, Aboelnaga EM, El-Beshbishi WN, Saleh YM, Abou-ElWafa HS, El-Beshbishi SN. Trichomonas vaginalis serostatus and prostate cancer risk in Egypt: a case-control study. Parasitol Res 2020; 120:1379-1388. [PMID: 33159459 DOI: 10.1007/s00436-020-06942-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/21/2020] [Indexed: 10/23/2022]
Abstract
Trichomonas vaginalis is one of the most common non-viral sexually transmitted infections (STIs) that has been associated with prostate cancer in some countries. This study aims to investigate if T. vaginalis infection can be a risk factor for prostate cancer in Egypt and its possible relationship with cancer prognostic factors and overall survival. Serum samples were collected from a total of 445 age-matched males; 126 with prostate cancer, 108 with bladder cancer, 91 with different types of cancers, and 120 healthy controls, and then analyzed by ELISA for detection of anti-Trichomonas IgG and prostate-specific antigen (PSA). The results revealed that only 8.3% of controls were seropositive for trichomoniasis, compared with 19% of prostate cancer patients (P = 0.015). There were positive associations between the levels of PSA and tumor stage with T. vaginalis IgG optical density scores among the seropositive cases (P < 0.001 and < 0.05, respectively). However, no significant correlations were detected between seropositivity of T. vaginalis and other prognostic factors or overall survival in those patients. In conclusion, chronic T. vaginalis infection may be associated with prostate cancer, but it does not seem that this STI aggravates the cancer status.
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Affiliation(s)
- Nora E Saleh
- Department of Medical Parasitology, Faculty of Medicine, Mansoura University, 2 El-Gomhouria Street, Mansoura, 35516, Egypt
| | - Samar M Alhusseiny
- Department of Medical Parasitology, Faculty of Medicine, Mansoura University, 2 El-Gomhouria Street, Mansoura, 35516, Egypt
| | - Wafaa M El-Zayady
- Department of Medical Parasitology, Faculty of Medicine, Mansoura University, 2 El-Gomhouria Street, Mansoura, 35516, Egypt
| | - Engy M Aboelnaga
- Department of Clinical Oncology and Nuclear Medicine, Mansoura University Hospital, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Wafaa N El-Beshbishi
- Department of Clinical Oncology and Nuclear Medicine, Mansoura University Hospital, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Yasser M Saleh
- Department of Clinical Oncology and Nuclear Medicine, Mansoura University Hospital, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Hala S Abou-ElWafa
- Department of Public Health and Community Medicine, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Samar N El-Beshbishi
- Department of Medical Parasitology, Faculty of Medicine, Mansoura University, 2 El-Gomhouria Street, Mansoura, 35516, Egypt.
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14
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Advancing Prevention of STIs by Developing Specific Serodiagnostic Targets: Trichomonas vginalis as a Model. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165783. [PMID: 32785073 PMCID: PMC7460209 DOI: 10.3390/ijerph17165783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 12/24/2022]
Abstract
Point-of-Care (POC) serum antibody screening of large cohorts of women and men at risk for the sexually transmitted infection (STI) caused by Trichomonas vaginalis requires the availability of targets with high specificity. Such targets should comprise epitopes unique to T. vaginalis immunogenic proteins detected by sera of women and men patients with trichomonosis but not uninfected controls. Three enzymes to which patients make serum IgG antibody were identified as fructose-1,6-bisphosphate aldolase (A), α-enolase (E), and glyceraldehyde-3-phosphate dehydrogenase (G). Epitopes within these proteins were identified that had no sequence identity to enzymes of humans and other pathogens. Therefore, I constructed a chimeric recombinant String-Of-Epitopes (SOE) protein consisting of 15-mer peptides, within which are the epitopes of A, E, and G. This novel protein of ~36-kD is comprised of two epitopes of A, ten epitopes of E, and seven epitopes of G (AEG::SOE2). The AEG::SOE2 protein was detected both by immunoblot and by enzyme-linked immunosorbent assay (ELISA) using highly reactive sera of women and men but not negative serum unreactive to T. vaginalis proteins. Finally, AEG::SOE2 was found to be immunogenic, as evidenced by serum IgG from immunized mice. I discuss how this approach is important in relation to infectious disease diagnostic targets for detection of serum IgG antibody in exposed and/or infected individuals and how such novel targets may have potential as subunit vaccine candidates against microbial pathogens.
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15
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Lin HC, Chu LJ, Huang PJ, Cheng WH, Zheng YH, Huang CY, Hong SW, Chen LC, Lin HA, Wang JY, Chen RM, Lin WN, Tang P, Huang KY. Proteomic signatures of metronidazole-resistant Trichomonas vaginalis reveal novel proteins associated with drug resistance. Parasit Vectors 2020; 13:274. [PMID: 32487244 PMCID: PMC7268490 DOI: 10.1186/s13071-020-04148-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/25/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Trichomoniasis is the most common non-viral sexually transmitted disease caused by the protozoan parasite Trichomonas vaginalis. Metronidazole (MTZ) is a widely used drug for the treatment of trichomoniasis; however, increased resistance of the parasite to MTZ has emerged as a highly problematic public health issue. METHODS We conducted iTRAQ-based analysis to profile the proteomes of MTZ-sensitive (MTZ-S) and MTZ-resistant (MTZ-R) parasites. STRING and gene set enrichment analysis (GESA) were utilized to explore the protein-protein interaction networks and enriched pathways of the differentially expressed proteins, respectively. Proteins potentially related to MTZ resistance were selected for functional validation. RESULTS A total of 3123 proteins were identified from the MTZ-S and MTZ-R proteomes in response to drug treatment. Among the identified proteins, 304 proteins were differentially expressed in the MTZ-R proteome, including 228 upregulated and 76 downregulated proteins. GSEA showed that the amino acid-related metabolism, including arginine, proline, alanine, aspartate, and glutamate are the most upregulated pathways in the MTZ-R proteome, whereas oxidative phosphorylation is the most downregulated pathway. Ten proteins categorized into the gene set of oxidative phosphorylation were ATP synthase subunit-related proteins. Drug resistance was further examined in MTZ-S parasites pretreated with the ATP synthase inhibitors oligomycin and bafilomycin A1, showing enhanced MTZ resistance and potential roles of ATP synthase in drug susceptibility. CONCLUSIONS We provide novel insights into previously unidentified proteins associated with MTZ resistance, paving the way for future development of new drugs against MTZ-refractory trichomoniasis.
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Affiliation(s)
- Hsin-Chung Lin
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Lichieh Julie Chu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan City, 333, Taiwan.,Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan City, 333, Taiwan
| | - Po-Jung Huang
- Department of Biomedical Sciences, Chang Gung University, Taoyuan City, 333, Taiwan.,Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taoyuan City, 333, Taiwan
| | - Wei-Hung Cheng
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
| | - Yu-Hsing Zheng
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Ching-Yun Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Shu-Wen Hong
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, New Taipei City, 252, Taiwan
| | - Hsin-An Lin
- Division of Infection, Department of Medicine, Tri-Service General Hospital SongShan Branch, Taipei City, 105, Taiwan
| | - Jui-Yang Wang
- Division of Family Medicine, Tri-Service General Hospital Songshan Branch, Taipei City, 105, Taiwan
| | - Ruei-Min Chen
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Wei-Ning Lin
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City, 242, Taiwan
| | - Petrus Tang
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
| | - Kuo-Yang Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan.
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16
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Langston ME, Bhalla A, Alderete JF, Nevin RL, Pakpahan R, Hansen J, Elliott D, De Marzo AM, Gaydos CA, Isaacs WB, Nelson WG, Sokoll LJ, Zenilman JM, Platz EA, Sutcliffe S. Trichomonas vaginalis infection and prostate-specific antigen concentration: Insights into prostate involvement and prostate disease risk. Prostate 2019; 79:1622-1628. [PMID: 31376187 PMCID: PMC6715535 DOI: 10.1002/pros.23886] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/08/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND The protist Trichomonas vaginalis causes a common, sexually transmitted infection and has been proposed to contribute to the development of chronic prostate conditions, including benign prostatic hyperplasia and prostate cancer. However, few studies have investigated the extent to which it involves the prostate in the current antimicrobial era. We addressed this question by investigating the relation between T. vaginalis antibody serostatus and serum prostate-specific antigen (PSA) concentration, a marker of prostate infection, inflammation, and/or cell damage, in young, male, US military members. METHODS We measured T. vaginalis serum IgG antibodies and serum total PSA concentration in a random sample of 732 young, male US active duty military members. Associations between T. vaginalis serostatus and PSA were investigated by linear regression. RESULTS Of the 732 participants, 341 (46.6%) had a low T. vaginalis seropositive score and 198 (27.0%) had a high score, with the remainder seronegative. No significant differences were observed in the distribution of PSA by T. vaginalis serostatus. However, slightly greater, nonsignificant differences were observed when men with high T. vaginalis seropositive scores were compared with seronegative men, and when higher PSA concentrations were examined (≥0.70 ng/mL). Specifically, 42.5% of men with high seropositive scores had a PSA concentration greater than or equal to 0.70 ng/mL compared with 33.2% of seronegative men (adjusted P = .125). CONCLUSIONS Overall, our findings do not provide strong support for prostate involvement during T. vaginalis infection, although our suggestive positive findings for higher PSA concentrations do not rule out this possibility entirely. These suggestive findings may be relevant for prostate condition development because higher early- to mid-life PSA concentrations have been found to predict greater prostate cancer risk later in life.
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Affiliation(s)
- Marvin E. Langston
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Ankita Bhalla
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO
- School of Dentistry, University of California, San Francisco, San Francisco, CA
| | - John F. Alderete
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA
| | - Remington L. Nevin
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- The Quinism Foundation, White River Junction, VT
| | - Ratna Pakpahan
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Johannah Hansen
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO
- Los Angeles County Department of Public Health, Los Angeles, CA
| | - Debra Elliott
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Angelo M. De Marzo
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Urology and the James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Charlotte A. Gaydos
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - William B. Isaacs
- Department of Urology and the James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - William G. Nelson
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Urology and the James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
- Department of Pharmacology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Lori J. Sokoll
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Urology and the James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Jonathan M. Zenilman
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Elizabeth A. Platz
- Department of Urology and the James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Siobhan Sutcliffe
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO
- Alvin J. Siteman Cancer Center and the Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO
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17
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Dheilly NM, Ewald PW, Brindley PJ, Fichorova RN, Thomas F. Parasite-microbe-host interactions and cancer risk. PLoS Pathog 2019; 15:e1007912. [PMID: 31415672 PMCID: PMC6695093 DOI: 10.1371/journal.ppat.1007912] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Nolwenn M. Dheilly
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, United States of America
| | - Paul W. Ewald
- Department of Biology, University of Louisville, Louisville, Kentucky, United States of America
| | - Paul J. Brindley
- Department of Microbiology, Immunology and Tropical Medicine and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, George Washington University, Washington DC, United States of America
| | - Raina N. Fichorova
- Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
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18
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Donders GGG, Ruban K, Depuydt C, Bellen G, Vanden Broeck D, Jonckheere J, Jacquemyn Y. Treatment Attitudes for Belgian Women With Persistent Trichomonas vaginalis Infection in the VlaResT Study. Clin Infect Dis 2019; 68:1575-1580. [PMID: 30395193 DOI: 10.1093/cid/ciy736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 09/26/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Because of its increasing prevalence worldwide, its sexual transmissibility and its facilitation of human immunodeficiency virus transmission, Trichomonas vaginalis (TV) infection constitutes an important public health concern. THE AIM OF THE STUDY While searching for possible resistant TV cases, adequacy of management of TV-infected women was assessed. METHODS Cervical cytology between July 2007 and July 2014 was tested with TV polymerase chain reaction, and 304 women expressed repeatedly positive results, 718 in total. For each of these positive results, a questionnaire about treatment decisions was sent to the 182 Belgian physicians treating these women. RESULTS From the 346 returned questionnaires by their physician it was evident that 58.1% of women with repeatedly positive TV had received no treatment. TV was overlooked in 31.5%, and in 17.6% the test result was seen but ignored. Upon seeing the positive result, 23.9% of physicians decided that this finding was not important enough to institute treatment, and/or requested confirmatory tests. Adequate treatment was prescribed in 38.4%. Retreatment after failed therapy was given in only 29.3% of the cases. And 60% of the partners of women with persistent TV infection were not traced, nor treated. CONCLUSION Most of the repeatedly positive TV infection may not be due to antibiotics resistance. The low awareness, poor attention, failure of contact tracing, and low rates of proper treatment provided by treating physicians question the adequacy of the current management of TV infection and requires renewed education campaigns and increased surveillance.
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Affiliation(s)
| | | | | | | | | | - Jef Jonckheere
- Algemeen Medisch Laboratorium (AML), Sonic Healthcare, Antwerp, Belgium
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19
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Tsang SH, Peisch SF, Rowan B, Markt SC, Gonzalez-Feliciano AG, Sutcliffe S, Platz EA, Mucci LA, Ebot EM. Association between Trichomonas vaginalis and prostate cancer mortality. Int J Cancer 2018; 144:2377-2380. [PMID: 30242839 DOI: 10.1002/ijc.31885] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 11/05/2022]
Abstract
We previously observed a positive association between seropositivity for the parasite Trichomonas vaginalis and risk of clinically significant prostate cancer at diagnosis. Here, we examined whether T. vaginalis seropositivity was associated with increased prostate cancer-specific or all-cause mortality among prostate cancer patients. We studied 736 men with prostate cancer from the Physicians' Health Study (PHS) and 749 men with prostate cancer from the Health Professionals Follow-Up Study (HPFS). We used Cox proportional hazards regression models to estimate multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) of the association between T. vaginalis serostatus and progression to death from prostate cancer and from all causes. In PHS, 423 men died of any cause during a median follow-up of 13.8 years from the date of cancer diagnosis, among whom 131 died of prostate cancer. In HPFS, there were 287 deaths, including 77 deaths from prostate cancer, during a median follow-up of 12.8 years. We found no association between T. vaginalis serostatus and either prostate cancer mortality or all-cause mortality in either the PHS or HPFS. While previous studies suggest a possible role for T. vaginalis in the development of clinically significant prostate cancer, our findings do not support the hypothesis that T. vaginalis serostatus is associated with mortality among prostate cancer patients.
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Affiliation(s)
- Sabrina H Tsang
- Cancer Prevention Fellowship Program, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Samuel F Peisch
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Brendan Rowan
- UCD School of Medicine, University College Dublin, Belfield, Dublin
| | - Sarah C Markt
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | | | - Siobhan Sutcliffe
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, Saint Louis, MO
| | - Elizabeth A Platz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Lorelei A Mucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Ericka M Ebot
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
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20
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Potential role of autophagy in proteolysis in Trichomonas vaginalis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2018; 52:336-344. [PMID: 30503389 DOI: 10.1016/j.jmii.2018.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/09/2018] [Accepted: 11/16/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Autophagy has been shown to be involved in the pathogenesis of several protists, offering prospects for the developments of new drugs targeting autophagy. However, there is no evidence illustrating functional autophagy in the deep-branching trichomonads. The human parasitic protist Trichomonas vaginalis has been predicted to possess reduced autophagic machinery, with only autophagy-related protein 8 (Atg8) conjugation system required for autophagosome formation. METHODS The recombinant protein of TvAtg8 (rTvAtg8) and the polyclonal antibody against rTvAtg8 were generated. The expression and localization of TvAtg8 was monitored upon autophagy induction by glucose restriction (GR) compared with glucose-rich cultivation. The role of TvAtg8 in proteolysis was clarified. RESULTS Here, we report that T. vaginalis Atg8 (TvAtg8) is upregulated and conjugated to autophagosome-like vesicles upon autophagy induction by GR. Moreover, we investigate, for the first time, the role of autophagy in T. vaginalis. Proteasome inhibition (PI)-induced autophagy compensates for the removal of polyubiquitinated proteins under glucose-rich condition. GR-induced autophagy is a major proteolytic system in T. vaginalis. These results suggest that autophagy is vital for proteolysis in T. vaginalis with an impaired ubiquitin-proteasome system or under glucose-limited environment. CONCLUSION Our findings unveiled previously unidentified functions of autophagy in proteostasis in trichomonads, advancing our understanding of this highly conserved process in the ancient eukaryote.
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21
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Elevated Serum Cytokines and Trichomonas vaginalis Serology at Diagnosis Are Not Associated With Higher Gleason Grade or Lethal Prostate Cancer. Clin Genitourin Cancer 2018; 17:32-37. [PMID: 30348512 DOI: 10.1016/j.clgc.2018.09.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/24/2018] [Accepted: 09/27/2018] [Indexed: 01/22/2023]
Abstract
BACKGROUND Inflammation and infections have been associated with prostate cancer progression. We assessed whether elevated serum cytokines or T. vaginalis seropositivity at the time of diagnosis was associated with higher grade or lethal prostate cancer. PATIENTS AND METHODS Men with localized or metastatic prostate cancer were included in this study. Cytokine serum levels including interleukin (IL)-1α, IL-1β, IL-2, IL-6, IL-8, monocyte chemotactic protein 1 (CCL-2), tumor necrosis factor α, and growth-regulated oncogene α (CXCL-1) using a multiplex enzyme-linked immunosorbent assay and T. vaginalis serology were measured in blood samples at diagnosis. RESULTS A total of 324 patients were identified at time of localized disease and 118 at time of metastatic disease. Of the 189 patients with localized disease and clinical follow-up data (median, 73 months), 28 developed lethal disease. There was no association between circulating cytokine levels above median concentrations nor T. vaginalis seropositivity and risk of intermediate- to high-risk or lethal prostate cancer. CONCLUSION Higher levels of serum cytokine levels and T. vaginalis seropositivity at diagnosis are not associated with high-grade or lethal prostate cancer and do not aid risk stratification of localized prostate cancer.
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22
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Aykan S, Temiz MZ, Yilmaz M, Ulus I, Yuruk E, Muslumanoglu AY. Association between male accesory gland infections and prostate cancer in Turkish men: A case-control study. Andrologia 2018; 50:e13038. [PMID: 29740844 DOI: 10.1111/and.13038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2018] [Indexed: 02/05/2023] Open
Abstract
It is well known that chronic inflammation contributes to several forms of human cancer. Although several studies have investigated the association between prostatitis and prostate cancer, there is a lack of specifically designed study about male accessory gland infections (MAGI) and prostate cancer co-occurrence. We aimed to investigate this association with a case-control study in Turkish men. A total of 155 patients were enrolled to the study. After the pathological examination of the transrectal ultrasound-guided prostate biopsy specimens, patients were divided the two groups as control and prostate cancer and the presence of MAGI was determined. Of 155 patients, 145 met inclusion criteria. In the prostate cancer group, MAGI diagnose was determined in 18 of 31 patients (58.06%), while it was determined in 25 of 114 (21.93%) patients in the control group (p = .001). A significant correlation between MAGI and pathological Gleason score also revealed (p = .0001). We demonstrated that men with MAGI have increased risk for the development of prostate cancer. Moreover, in this population, most of the prostate cancers tend to be clinically significant or high grade.
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Affiliation(s)
- S Aykan
- Department of Urology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - M Z Temiz
- Department of Urology, Catalca State Hospital, Istanbul, Turkey
| | - M Yilmaz
- Department of Urology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - I Ulus
- Department of Urology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - E Yuruk
- Department of Urology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - A Y Muslumanoglu
- Department of Urology, Bagcilar Training and Research Hospital, Istanbul, Turkey
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Nievas YR, Coceres VM, Midlej V, de Souza W, Benchimol M, Pereira-Neves A, Vashisht AA, Wohlschlegel JA, Johnson PJ, de Miguel N. Membrane-shed vesicles from the parasite Trichomonas vaginalis: characterization and their association with cell interaction. Cell Mol Life Sci 2018; 75:2211-2226. [PMID: 29222644 PMCID: PMC11105416 DOI: 10.1007/s00018-017-2726-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/30/2017] [Accepted: 12/05/2017] [Indexed: 01/09/2023]
Abstract
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. vaginalis. MVs are considered universal transport vehicles for intercellular communication as they can incorporate peptides, proteins, lipids, miRNA, and mRNA, all of which can be transferred to target cells through receptor-ligand interactions, fusion with the cell membrane, and delivery of a functional cargo to the cytoplasm of the target cell. In the present study, we demonstrated that T. vaginalis release MVs from the plasma and the flagellar membranes of the parasite. We performed proteomic profiling of these structures demonstrating that they possess physical characteristics similar to mammalian extracellular vesicles and might be selectively charged with specific protein content. In addition, we demonstrated that viable T. vaginalis parasites release large vesicles (LVs), membrane structures larger than 1 µm that are able to interact with other parasites and with the host cell. Finally, we show that both populations of vesicles present on the surface of T vaginalis are induced in the presence of host cells, consistent with a role in modulating cell interactions.
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Affiliation(s)
- Yesica R Nievas
- Laboratorio de Parásitos Anaerobios Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Intendente Marino KM 8.200 Chascomús, B7130IWA, Chascomús, Provincia de Buenos Aires, Argentina
| | - Veronica M Coceres
- Laboratorio de Parásitos Anaerobios Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Intendente Marino KM 8.200 Chascomús, B7130IWA, Chascomús, Provincia de Buenos Aires, Argentina
| | - Victor Midlej
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio De Janeiro, Brazil
| | - Wanderley de Souza
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio De Janeiro, Brazil
| | - Marlene Benchimol
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio De Janeiro, Brazil
| | - Antonio Pereira-Neves
- Departamento de Microbiologia, Instituto Aggeu Magalhães, Fiocruz, Recife, Pernambuco, Brazil
| | - Ajay A Vashisht
- Department of Biological Chemistry, University of California, Los Angeles, CA, 90095-1489, USA
| | - James A Wohlschlegel
- Department of Biological Chemistry, University of California, Los Angeles, CA, 90095-1489, USA
| | - Patricia J Johnson
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA, 90095-1489, USA
| | - Natalia de Miguel
- Laboratorio de Parásitos Anaerobios Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Intendente Marino KM 8.200 Chascomús, B7130IWA, Chascomús, Provincia de Buenos Aires, Argentina.
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Nievas YR, Vashisht AA, Corvi MM, Metz S, Johnson PJ, Wohlschlegel JA, de Miguel N. Protein Palmitoylation Plays an Important Role in Trichomonas vaginalis Adherence. Mol Cell Proteomics 2018; 17:2229-2241. [PMID: 29444981 DOI: 10.1074/mcp.ra117.000018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 01/03/2018] [Indexed: 01/16/2023] Open
Abstract
The flagellated protozoan parasite Trichomonas vaginalis is the etiologic agent of trichomoniasis, the most common non-viral sexually transmitted infection worldwide. As an obligate extracellular pathogen, adherence to epithelial cells is critical for parasite survival within the human host and a better understanding of this process is a prerequisite for the development of therapies to combat infection. In this sense, recent work has shown S-acylation as a key modification that regulates pathogenesis in different protozoan parasites. However, there are no reports indicating whether this post-translational modification is a mechanism operating in T. vaginalis In order to study the extent and function of S-acylation in T. vaginalis biology, we undertook a proteomic study to profile the full scope of S-acylated proteins in this parasite and reported the identification of 363 proteins involved in a variety of biological processes such as protein transport, pathogenesis related and signaling, among others. Importantly, treatment of parasites with the palmitoylation inhibitor 2-bromopalmitate causes a significant decrease in parasite: parasite aggregation as well as adherence to host cells suggesting that palmitoylation could be modifying proteins that are key regulators of Trichomonas vaginalis pathogenesis.
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Affiliation(s)
- Yesica R Nievas
- From the ‡Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús B7130IWA, Argentina
| | - Ajay A Vashisht
- §Department of Biological Chemistry, University of California, Los Angeles, California, 90095-1489
| | - Maria M Corvi
- ¶Laboratorio de Bioquímica de Parásitos, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús B7130IWA, Argentina
| | - Sebastian Metz
- From the ‡Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús B7130IWA, Argentina
| | - Patricia J Johnson
- ‖Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, 90095-1489
| | - James A Wohlschlegel
- §Department of Biological Chemistry, University of California, Los Angeles, California, 90095-1489
| | - Natalia de Miguel
- From the ‡Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús B7130IWA, Argentina;
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Huang KY, Ong SC, Wu CC, Hsu CW, Lin HC, Fang YK, Cheng WH, Huang PJ, Chiu CH, Tang P. Metabolic reprogramming of hydrogenosomal amino acids in Trichomonas vaginalis under glucose restriction. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2017; 52:630-637. [PMID: 29198954 DOI: 10.1016/j.jmii.2017.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 06/12/2017] [Accepted: 10/29/2017] [Indexed: 12/13/2022]
Abstract
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. vaginalis. METHODS Herein, we describe a comprehensive metabolomic analysis of amino acid metabolites in the hydrogenosome using liquid chromatography Fourier transform ion cyclotron resonance mass spectrometry (LC-FT MS). The relative abundance of 17 hydrogenosomal amino acids was analyzed under GR and high-glucose (HG) conditions. RESULTS Levels of most amino acids were higher in GR culture. Arginine was not detectable in either HG or GR cultures; however, its metabolic end-product proline was slightly increased under GR, suggesting that the arginine dihydrolase pathway was more activated by GR. Additionally, methionine catabolism was less stimulated under GR because of greater methionine accumulation. Furthermore, branched chain amino acids (BCAA), including leucine, isoleucine and valine, as well as phenylalanine and alanine, markedly accumulated under GR, indicating that glutamate-related metabolic pathways were remarkably enhanced in this setting. Our metabolomic analysis combined with previous RNA-seq data confirm the existence of several amino acid metabolic pathways in the hydrogenosome and highlight their potentially important roles in T. vaginalis under glucose deprivation.
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Affiliation(s)
- Kuo-Yang Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei, Taiwan
| | - Seow-Chin Ong
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Ching Wu
- Graduate Institute of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Wei Hsu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-Chung Lin
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan; Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, Taipei, Taiwan
| | - Yi-Kai Fang
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wei-Hung Cheng
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Po-Jung Huang
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Hsun Chiu
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Petrus Tang
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
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Antitrichomonal activity of δ opioid receptor antagonists, 7-benzylidenenaltrexone derivatives. Bioorg Med Chem 2017; 25:4375-4383. [DOI: 10.1016/j.bmc.2017.06.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/10/2017] [Accepted: 06/12/2017] [Indexed: 12/13/2022]
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Trichomonas vaginalis infection and risk of prostate cancer: associations by disease aggressiveness and race/ethnicity in the PLCO Trial. Cancer Causes Control 2017; 28:889-898. [PMID: 28669054 DOI: 10.1007/s10552-017-0919-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/24/2017] [Indexed: 12/13/2022]
Abstract
PURPOSE Results from previous sero-epidemiologic studies of Trichomonas vaginalis infection and prostate cancer (PCa) support a positive association between this sexually transmitted infection and aggressive PCa. However, findings from previous studies are not entirely consistent, and only one has investigated the possible relation between T. vaginalis seropositivity and PCa in African-American men who are at highest risk of both infection and PCa. Therefore, we examined this possible relation in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, including separate analyses for aggressive PCa and African-American men. METHODS We included a sample of participants from a previous nested case-control study of PCa, as well as all additional Caucasian, aggressive, and African-American cases diagnosed since the previous study (total n = 438 Gleason 7 Caucasian cases, 487 more advanced Caucasian cases (≥Gleason 8 or stage III/IV), 201 African-American cases, and 1216 controls). We tested baseline sera for T. vaginalis antibodies. RESULTS No associations were observed for risk of Gleason 7 (odds ratio (OR) = 0.87, 95% confidence interval (CI) 0.55-1.37) or more advanced (OR = 0.90, 95% CI 0.58-1.38) PCa in Caucasian men, or for risk of any PCa (OR = 1.06, 95% CI 0.67-1.68) in African-American men. CONCLUSIONS Our findings do not support an association between T. vaginalis infection and PCa.
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Pachano T, Nievas YR, Lizarraga A, Johnson PJ, Strobl-Mazzulla PH, de Miguel N. Epigenetics regulates transcription and pathogenesis in the parasite Trichomonas vaginalis. Cell Microbiol 2017; 19:e12716. [PMID: 28054438 DOI: 10.1111/cmi.12716] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/14/2016] [Accepted: 12/21/2016] [Indexed: 12/21/2022]
Abstract
Trichomonas vaginalis is a common sexually transmitted parasite that colonizes the human urogenital tract. Infections range from asymptomatic to highly inflammatory, depending on the host and the parasite strain. Different T. vaginalis strains vary greatly in their adherence and cytolytic capacities. These phenotypic differences might be attributed to differentially expressed genes as a consequence of extra-genetic variation, such as epigenetic modifications. In this study, we explored the role of histone acetylation in regulating gene transcription and pathogenesis in T. vaginalis. Here, we show that histone 3 lysine acetylation (H3KAc) is enriched in nucleosomes positioned around the transcription start site of active genes (BAP1 and BAP2) in a highly adherent parasite strain; compared with the low acetylation abundance in contrast to that observed in a less-adherent strain that expresses these genes at low levels. Additionally, exposition of less-adherent strain with a specific histone deacetylases inhibitor, trichostatin A, upregulated the transcription of BAP1 and BAP2 genes in concomitance with an increase in H3KAc abundance and chromatin accessibility around their transcription start sites. Moreover, we demonstrated that the binding of initiator binding protein, the transcription factor responsible for the initiation of transcription of ~75% of known T. vaginalis genes, depends on the histone acetylation state around the metazoan-like initiator to which initiator binding protein binds. Finally, we found that trichostatin A treatment increased parasite aggregation and adherence to host cells. Our data demonstrated for the first time that H3KAc is a permissive histone modification that functions to mediate both transcription and pathogenesis of the parasite T. vaginalis.
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Affiliation(s)
- Tomas Pachano
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús, Argentina
| | - Yesica R Nievas
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús, Argentina
| | - Ayelen Lizarraga
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús, Argentina
| | - Patricia J Johnson
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA
| | - Pablo H Strobl-Mazzulla
- Laboratorio de Biología del Desarrollo, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús, Argentina
| | - Natalia de Miguel
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomús, Argentina
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Alderete JF. Epitopes within recombinant α-actinin protein is serodiagnostic target for Trichomonas vaginalis sexually transmitted infections. Heliyon 2017; 3:e00237. [PMID: 28203642 PMCID: PMC5288299 DOI: 10.1016/j.heliyon.2017.e00237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/02/2017] [Accepted: 01/22/2017] [Indexed: 12/24/2022] Open
Abstract
To date there is no commercially-available serodiagnostic for women and men infected with Trichomonas vaginalis. Thirteen epitopes of the immunogenic T. vaginalis α-actinin (106.2-kDa) are detected by sera of women patients, and 5 epitopes, a subset of the 13, are detected by sera of men. A truncated recombinant protein called ACT-P2 (63.5-kDa) encoding the 5 epitopes is used for screening by ELISA for antibody in sera of women and men. Because ACT-P2 is poorly expressed in E. coli, we wanted alternative recombinant α-actinin proteins as serodiagnostic targets. We, therefore, constructed plasmids encoding two novel, small recombinant proteins of ∼25-kDa comprised of 15-mer peptides, each peptide of which contains one of the 13 epitopes. We refer to these novel proteins as α-actinin::string-of-epitopes1 (ACT::SOE1) and ACT::SOE2. We found the proteins to be unrecoverable from insoluble inclusion bodies without denaturing conditions, which rendered the proteins unsuitable for antibody detection. Thus, we synthesized a third ACT::SOE3 protein (72.4-kDa) with 7 epitopes that was synthesized in high amounts and was readily purified. Monoclonal antibodies to α-actinin detected ACT::SOE3 and ACT-P2 by ELISA. Further, we show that ACT::SOE3 is equal to ACT-P2 as a target protein for detection of serum IgG in positive sera of women and men. Data indicate that ACT::SOE3 is a target for screening of populations at-risk for this STI. Finally, the paper discusses the findings with regard to Point-of-Care diagnostic targets and vaccine candidates.
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Affiliation(s)
- J F Alderete
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
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Yow MA, Tabrizi SN, Severi G, Bolton DM, Pedersen J, Giles GG, Southey MC. Characterisation of microbial communities within aggressive prostate cancer tissues. Infect Agent Cancer 2017; 12:4. [PMID: 28101126 PMCID: PMC5237345 DOI: 10.1186/s13027-016-0112-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 12/13/2016] [Indexed: 12/11/2022] Open
Abstract
Background An infectious aetiology for prostate cancer has been conjectured for decades but the evidence gained from questionnaire-based and sero-epidemiological studies is weak and inconsistent, and a causal association with any infectious agent is not established. We describe and evaluate the application of new technology to detect bacterial and viral agents in high-grade prostate cancer tissues. The potential of targeted 16S rRNA gene sequencing and total RNA sequencing was evaluated in terms of its utility to characterise microbial communities within high-grade prostate tumours. Methods Two different Massively Parallel Sequencing (MPS) approaches were applied. First, to capture and enrich for possible bacterial species, targeted-MPS of the V2-V3 hypervariable regions of the 16S rRNA gene was performed on DNA extracted from 20 snap-frozen prostate tissue cores from ten “aggressive” prostate cancer cases. Second, total RNA extracted from the same prostate tissue samples was also sequenced to capture the sequence profile of both bacterial and viral transcripts present. Results Overall, 16S rRNA sequencing identified Enterobacteriaceae species common to all samples and P. acnes in 95% of analyzed samples. Total RNA sequencing detected endogenous retroviruses providing proof of concept but there was no evidence of bacterial or viral transcripts suggesting active infection, although it does not rule out a previous ‘hit and run’ scenario. Conclusions As these new investigative methods and protocols become more refined, MPS approaches may be found to have significant utility in identifying potential pathogens involved in disease aetiology. Further studies, specifically designed to detect associations between the disease phenotype and aetiological agents, are required. Electronic supplementary material The online version of this article (doi:10.1186/s13027-016-0112-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Melissa A Yow
- Genetic Epidemiology Laboratory, Department of Pathology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, VIC, Australia 3010
| | - Sepehr N Tabrizi
- Department of Microbiology and Infectious Diseases, Royal Women's Hospital, Parkville, VIC Australia 3052 ; Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC Australia 3010 ; Murdoch Childrens Research Institute, Parkville, VIC Australia 3052
| | - Gianluca Severi
- Human Genetics Foundation (HuGeF), Via Nizza, 52-10126 Torino, Italy
| | - Damien M Bolton
- Department of Surgery, University of Melbourne, Austin Health, 145 Studley Road, Heidelberg, VIC Australia 3084
| | - John Pedersen
- TissuPath, 92-96 Ricketts Road, Mount Waverley, VIC Australia 3149
| | | | - Graham G Giles
- Cancer Epidemiology and Intelligence Division, Cancer Epidemiology Centre, Cancer Council Victoria, Level 2, 615 St Kilda Road, Melbourne, VIC Australia 3004 ; Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Level 3, 207 Bouverie Street, Carlton, VIC Australia 3053
| | - Melissa C Southey
- Genetic Epidemiology Laboratory, Department of Pathology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, VIC, Australia 3010
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Arbabi M, Delavari M, Fakhrieh Kashan Z, Taghizadeh M, Hooshyar H. Ginger (Zingiber officinale) induces apoptosis in Trichomonas vaginalis in vitro. Int J Reprod Biomed 2016. [DOI: 10.29252/ijrm.14.11.691] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Arbabi M, Delavari M, Fakhrieh Kashan Z, Taghizadeh M, Hooshyar H. Ginger (Zingiber officinale) induces apoptosis in Trichomonas vaginalis in vitro. Int J Reprod Biomed 2016; 14:691-698. [PMID: 27981254 PMCID: PMC5153574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/24/2016] [Accepted: 08/24/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Trichomoniasis is the most common sexually transmitted protozoan diseases in the worldwide. Metronidazole is the choice drug for trichomoniasis treatment, however, metronidazole resistant Trichomonas vaginalis (T.vaginalis) has been reported. Natural products are the source of most new drugs, and Zingiber officinale (Ginger) is widely used ingredient in the traditional medicine. OBJECTIVE The aim of the present study was to determine the effect of different concentrations of the ginger ethanol extract on the growth of T.vaginalis trophozoites in vitro. MATERIALS AND METHODS In this experimental study, 970 women who were attend in Kashan health centers were examined for T. vaginalis. Of them, 23 samples were infected with T.vaginalis. Three T. vaginalis isolates were cultured in a TYI-S-33 medium. The effect of ginger ethanol extracts and its toxicity in different concentrations (25, 50, 100, 200, 400, 800 µg/ml) on mouse macrophages were measured in triplicate exam by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay. The effect of ginger on apoptosis induction was determined by Flow cytometry. RESULTS The IC50 of ginger and metronidazole were 93.8 and 0.0326 µg/ml, respectively. 12, 24 and 48 hr after adding different concentrations of extract on mouse macrophages, fatality rates in maximum dose (800 µg/ml) were 0.19, 0.26 and 0.31 respectively. Flow cytometry results showed the apoptosis rate following treatment with different concentrations of the extract after 48 hr were 17, 28.5, 42.1, 58.8, 76.3 and 100% respectively, while in the control group was 2.9%. CONCLUSION Ginger ethanol extract induces programmed death in T. vaginalis. It is recommended that due to the known teratogenic effect of metronidazole, ginger can be considered as an alternative drug for metronidazole.
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Affiliation(s)
- Mohsen Arbabi
- Department of Medical Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
| | - Mahdi Delavari
- Department of Medical Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
| | - Zohre Fakhrieh Kashan
- Department of Medical Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
| | - Mohsen Taghizadeh
- Department of Medical Nutrition, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
| | - Hossein Hooshyar
- Department of Medical Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
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Menezes CB, Tasca T. Trichomoniasis immunity and the involvement of the purinergic signaling. Biomed J 2016; 39:234-243. [PMID: 27793265 PMCID: PMC6138788 DOI: 10.1016/j.bj.2016.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/27/2016] [Accepted: 06/30/2016] [Indexed: 12/31/2022] Open
Abstract
Innate and adaptive immunity play a significant role in trichomoniasis, the most common non-viral sexually transmitted disease worldwide. In the urogenital tract, innate immunity is accomplished by a defense physical barrier constituted by epithelial cells, mucus, and acidic pH. During infection, immune cells, antimicrobial peptides, cytokines, chemokines, and adaptive immunity evolve in the reproductive tract, and a proinflammatory response is generated to eliminate the invading extracellular pathogen Trichomonas vaginalis. However, the parasite has developed complex evolutionary mechanisms to evade the host immune response through cysteine proteases, phenotypic variation, and molecular mimicry. The purinergic system constitutes a signaling cellular net where nucleotides and nucleosides, enzymes, purinoceptors and transporters are involved in almost all cells and tissues signaling pathways, especially in central and autonomic nervous systems, endocrine, respiratory, cardiac, reproductive, and immune systems, during physiological as well as pathological processes. The involvement of the purinergic system in T. vaginalis biology and infection has been demonstrated and this review highlights the participation of this signaling pathway in the parasite immune evasion strategies.
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Affiliation(s)
- Camila Braz Menezes
- Parasitology Research Laboratory, Pharmacy Faculty, Federal University of Rio Grande do Sul, Brazil
| | - Tiana Tasca
- Parasitology Research Laboratory, Pharmacy Faculty, Federal University of Rio Grande do Sul, Brazil.
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Meites E, Gaydos CA, Hobbs MM, Kissinger P, Nyirjesy P, Schwebke JR, Secor WE, Sobel JD, Workowski KA. A Review of Evidence-Based Care of Symptomatic Trichomoniasis and Asymptomatic Trichomonas vaginalis Infections. Clin Infect Dis 2016; 61 Suppl 8:S837-48. [PMID: 26602621 DOI: 10.1093/cid/civ738] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Trichomonas vaginalis is the most prevalent nonviral sexually transmitted infection, affecting an estimated 3.7 million women and men in the United States. Health disparities are prominent in the epidemiology of this infection, which affects 11% of women aged ≥40 years and a disproportionately high percentage of black women. Particularly high prevalences have been identified among sexually transmitted disease (STD) clinic patients and incarcerated individuals. This article reviews and updates scientific evidence in key topic areas used for the development of the 2015 STD Treatment Guidelines published by the Centers for Disease Control and Prevention. Current evidence is presented regarding conditions associated with Trichomonas vaginalis infection, including human immunodeficiency virus (HIV) and pregnancy complications such as preterm birth. Nucleic acid amplification tests and point-of-care tests are newly available diagnostic methods that can be conducted on a variety of specimens, potentially allowing highly sensitive testing and screening of both women and men at risk for infection. Usually, trichomoniasis can be cured with single-dose therapy of an appropriate nitroimidazole antibiotic, but women who are also infected with HIV should receive therapy for 7 days. Antimicrobial resistance is an emerging concern.
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Affiliation(s)
- Elissa Meites
- Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Charlotte A Gaydos
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Marcia M Hobbs
- Departments of Medicine and Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill
| | - Patricia Kissinger
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
| | - Paul Nyirjesy
- Department of Obstetrics and Gynecology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Jane R Schwebke
- Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham School of Medicine
| | - W Evan Secor
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jack D Sobel
- Division of Infectious Diseases, Wayne State University School of Medicine, Detroit, Michigan
| | - Kimberly A Workowski
- Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
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Menezes CB, Frasson AP, Tasca T. Trichomoniasis - are we giving the deserved attention to the most common non-viral sexually transmitted disease worldwide? MICROBIAL CELL 2016; 3:404-419. [PMID: 28357378 PMCID: PMC5354568 DOI: 10.15698/mic2016.09.526] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
ETIOLOGY 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. Importantly, the main issue concerning trichomoniasis is its relationship with serious health consequences such as cancer, adverse pregnancy outcomes, infertility, and HIV acquisition. Molecular mechanisms of infection: To achieve success in parasitism trichomonads develop a complex process against the host cells that includes dependent- and independent-contact mechanisms. This multifactorial pathogenesis includes molecules such as soluble factors, secreted proteinases, adhesins, lipophosphoglycan that culminate in cytoadherence and cytotoxicity against the host cells. Treatment and curability: The treatment with metronidazole or tinidazole is recommended; however, cure failures remain problematic due to noncompliance, reinfection and/or lack of treatment of sexual partners, inaccurate diagnosis, or drug resistance. Therefore, new therapeutic alternatives are urgently needed. Protection: Strategies for protection including sexual behavior, condom usage, and therapy have not contributed to the decrease on disease prevalence, pointing to the need for innovative approaches. Vaccine development has been hampered by the lack of long-lasting humoral immunity associated to the absence of good animal models.
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Affiliation(s)
- Camila Braz Menezes
- Laboratório de Pesquisa em Parasitologia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Porto Alegre, Rio Grande do Sul, Brazil
| | - Amanda Piccoli Frasson
- Laboratório de Pesquisa em Parasitologia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Porto Alegre, Rio Grande do Sul, Brazil
| | - Tiana Tasca
- Laboratório de Pesquisa em Parasitologia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Porto Alegre, Rio Grande do Sul, Brazil
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Shui IM, Kolb S, Hanson C, Sutcliffe S, Rider JR, Stanford JL. Trichomonas vaginalis infection and risk of advanced prostate cancer. Prostate 2016; 76:620-3. [PMID: 26818005 PMCID: PMC5002353 DOI: 10.1002/pros.23153] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/05/2016] [Indexed: 01/07/2023]
Abstract
BACKGROUND The epidemiologic evidence for an association of Trichomonas vaginalis (Tv) with overall prostate cancer is mixed, but some studies suggest Tv may increase risk of more aggressive disease. The aim of this study was to assess whether Tv serostatus is associated with advanced or fatal prostate cancer. METHODS A total of 146 men with advanced (metastatic or fatal) prostate cancer and 181 age-matched controls were selected from two prior population-based, case-control studies. Tv serostatus was determined with the same laboratory methods used in previous epidemiologic studies. Odds ratios (OR) and 95% confidence intervals (CI) were calculated using multivariable logistic regression to compare Tv serostatus in prostate cancer cases and controls adjusted for potential confounders. RESULTS The seroprevalence of Tv in controls was 23%. Tv serostatus was not associated with an increased risk of metastatic or fatal prostate cancer (ORs < 1). CONCLUSIONS Our study does not support an increased risk of advanced or fatal prostate cancer in men seropositive for Tv.
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Affiliation(s)
- Irene M Shui
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
- Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA
| | - Suzanne Kolb
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Christi Hanson
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Siobhan Sutcliffe
- Division of Public Health Sciences and the Alvin J Siteman Cancer Center, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Jennifer R Rider
- Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA
- Department of Epidemiology, Boston University School of Public Health, Boston, MA
| | - Janet L Stanford
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
- Department of Epidemiology, School of Public Health, University of Washington, Seattle, Washington
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Fowke JH, Han X, Alderete JF, Moses KA, Signorello LB, Blot WJ. A prospective study of Trichomonas vaginalis and prostate cancer risk among African American men. BMC Res Notes 2016; 9:224. [PMID: 27091219 PMCID: PMC4835839 DOI: 10.1186/s13104-016-2033-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 04/08/2016] [Indexed: 12/20/2022] Open
Abstract
Background African Americans (AA) have a higher prevalence of Trichomonas vaginalis (Tv) infection and a higher prostate (PC) risk. Past studies suggest an association between Tv seropositivity and PC, and therefore we prospectively investigated this association among AA men. Results Incident PC cases were individually matched to controls in a nested case–control study within the Southern Community Cohort Study (SCCS). Primary analysis included 296 PC cases and 497 race-matched controls. Levels of Tv antibody response were measured by ELISA in serum collected at baseline. Tv antibody response did not significantly differ between cases and controls overall or within AA participants (253 AA cases). There were no significant associations or trends between levels of Tv response and PC risk or the diagnosis of aggressive PC. Conclusion We found no evidence of a prospective association between baseline Tv infection and PC risk in AA men. Tv infection in men may have substantial health implications in HIV transmission and reproductive outcomes, but may not impact future PC risk in AA men at high-risk for PC. Further efforts need to define past vs. present Tv infection and to separate pathophysiology from PC detection.
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Affiliation(s)
- Jay H Fowke
- Departments of Medicine, Institute of Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Ave, 12th floor, Nashville, TN, 37232, USA. .,Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, USA.
| | - Xijing Han
- International Epidemiology Institute, Rockville, MD, USA
| | - J F Alderete
- School of Molecular Biosciences, Washington State University, Pullman, WA, USA
| | - Kelvin A Moses
- Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, USA
| | - Lisa B Signorello
- Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - William J Blot
- Departments of Medicine, Institute of Medicine and Public Health, Vanderbilt University Medical Center, 2525 West End Ave, 12th floor, Nashville, TN, 37232, USA.,International Epidemiology Institute, Rockville, MD, USA
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Vázquez-Salas RA, Torres-Sánchez L, López-Carrillo L, Romero-Martínez M, Manzanilla-García HA, Cruz-Ortíz CH, Mendoza-Peña F, Jiménez-Ríos MÁ, Rodríguez-Covarrubias F, Hernández-Toríz N, Moreno-Alcázar O. History of gonorrhea and prostate cancer in a population-based case-control study in Mexico. Cancer Epidemiol 2015; 40:95-101. [PMID: 26706364 DOI: 10.1016/j.canep.2015.12.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 11/18/2015] [Accepted: 12/03/2015] [Indexed: 01/11/2023]
Abstract
UNLABELLED We evaluated the association between a history of sexually transmitted diseases (STDs) and the risk for prostate cancer (PC) among Mexican males. METHODS PC incident cases (n=402) that were identified at six public hospitals in Mexico City were matched by age (±5 years) with 805 population controls with no history of PC. By face-to-face interview, we obtained information about sexual history, previous STDs, sociodemographic characteristics, and familial history of PC. An unconditional logistic regression model was used to estimate the risk for PC. RESULTS A total of 16.6% of men reported having had at least one previous STD, and the most frequently reported STD was gonorrhea (10.5%). After adjusting by PC familial history, the history of STD was associated with a two-fold greater risk of PC: odds ratio (OR)=2.67; 95% confidence interval (95% CI=1.91-3.73). When each STD was evaluated separately, only gonorrhea was associated with a significant increase in PC risk (OR=3.04; 95% CI=1.99-4.64). These associations were similar when we stratified by low-risk PC (Gleason <7) and high-risk PC (Gleason ≥7). CONCLUSION These results confirm that STDs, and particularly gonorrhea, may play an etiological role in PC among Mexican males, which is consistent with a previous report from a multiethnic cohort.
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Affiliation(s)
- Ruth Argelia Vázquez-Salas
- Instituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100 Cuernavaca, Morelos, Mexico
| | - Luisa Torres-Sánchez
- Instituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100 Cuernavaca, Morelos, Mexico.
| | - Lizbeth López-Carrillo
- Instituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100 Cuernavaca, Morelos, Mexico
| | - Martín Romero-Martínez
- Instituto Nacional de Salud Pública (INSP), Av. Universidad 655, Col. Sta. María Ahuacatitlán, 62100 Cuernavaca, Morelos, Mexico
| | - Hugo A Manzanilla-García
- Hospital General de México, Dr. Balmis 148, Col. Doctores, Deleg. Cuauhtémoc, 06726 México, D.F., Mexico
| | - Carlos Humberto Cruz-Ortíz
- Hospital General de México, Dr. Balmis 148, Col. Doctores, Deleg. Cuauhtémoc, 06726 México, D.F., Mexico
| | - Fernando Mendoza-Peña
- Hospital Regional "Lic. Adolfo López Mateos" (ISSSTE), Av. Universidad 1321, Col. Florida Deleg. Álvaro Obregón, 01030 México, D.F., Mexico
| | - Miguel Ángel Jiménez-Ríos
- Instituto Nacional de Cancerología (INCan), Av. San Fernando No. 22, Col. Sección XVI, Deleg. Tlalpan, 14080 México, D.F., Mexico
| | - Francisco Rodríguez-Covarrubias
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán (INCMNSZ), Av. Vasco de Quiroga 15, Col. Belisario Domínguez, Col. Sección XVI, Deleg. Tlalpan, 14080 México, D.F, Mexico
| | - Narciso Hernández-Toríz
- Hospital de Oncología, Centro Médico Siglo XXI (CMN-SXXI), Instituto Mexicano del Seguro Social (IMSS), Av. Cuauhtémoc 330, Col. Doctores, Deleg. Cuauhtémoc, México, D.F., 06720, Mexico
| | - Othón Moreno-Alcázar
- Hospital General Regional No. 1. "Carlos MacGregor Sánchez Navarro" (IMSS), Eje 2 Pte 222, Col. Del Valle Centro, Deleg. Benito Juárez, 03100 México, D.F., Mexico
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Kutsumura N, Nakajima R, Koyama Y, Miyata Y, Saitoh T, Yamamoto N, Iwata S, Fujii H, Nagase H. Investigation of 7-benzylidenenaltrexone derivatives as a novel structural antitrichomonal lead compound. Bioorg Med Chem Lett 2015; 25:4890-4892. [DOI: 10.1016/j.bmcl.2015.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 05/28/2015] [Accepted: 06/02/2015] [Indexed: 12/13/2022]
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Novel insights into the molecular events linking to cell death induced by tetracycline in the amitochondriate protozoan Trichomonas vaginalis. Antimicrob Agents Chemother 2015; 59:6891-903. [PMID: 26303799 DOI: 10.1128/aac.01779-15] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 08/14/2015] [Indexed: 11/20/2022] Open
Abstract
Trichomonas vaginalis colonizes the human urogenital tract and causes trichomoniasis, the most common nonviral sexually transmitted disease. Currently, 5-nitroimidazoles are the only recommended drugs for treating trichomoniasis. However, increased resistance of the parasite to 5-nitroimidazoles has emerged as a highly problematic public health issue. Hence, it is essential to identify alternative chemotherapeutic agents against refractory trichomoniasis. Tetracycline (TET) is a broad-spectrum antibiotic with activity against several protozoan parasites, but the mode of action of TET in parasites remains poorly understood. The in vitro effect of TET on the growth of T. vaginalis was examined, and the mode of cell death was verified by various apoptosis-related assays. Next-generation sequencing-based RNA sequencing (RNA-seq) was employed to elucidate the transcriptome of T. vaginalis in response to TET. We show that TET has a cytotoxic effect on both metronidazole (MTZ)-sensitive and -resistant T. vaginalis isolates, inducing some features resembling apoptosis. RNA-seq data reveal that TET significantly alters the transcriptome via activation of specific pathways, such as aminoacyl-tRNA synthetases and carbohydrate metabolism. Functional analyses demonstrate that TET disrupts the hydrogenosomal membrane potential and antioxidant system, which concomitantly elicits a metabolic shift toward glycolysis, suggesting that the hydrogenosomal function is impaired and triggers cell death. Collectively, we provide in vitro evidence that TET is a potential alternative therapeutic choice for treating MTZ-resistant T. vaginalis. The in-depth transcriptomic signatures in T. vaginalis upon TET treatment presented here will shed light on the signaling pathways linking to cell death in amitochondriate organisms.
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Kissinger P. Trichomonas vaginalis: a review of epidemiologic, clinical and treatment issues. BMC Infect Dis 2015; 15:307. [PMID: 26242185 PMCID: PMC4525749 DOI: 10.1186/s12879-015-1055-0] [Citation(s) in RCA: 188] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/22/2015] [Indexed: 12/28/2022] Open
Abstract
Trichomonas vaginalis (TV) is likely the most common non-viral sexually transmitted infection (STI) in the world. It is as an important source of reproductive morbidity, a facilitator of HIV transmission and acquisition, and thus it is an important public health problem. Despite its importance in human reproductive health and HIV transmission, it is not a reportable disease and surveillance is not generally done. This is problematic since most persons infected with TV are asymptomatic. Metronidazole (MTZ) has been the treatment of choice for women for decades, and single dose has been considered the first line of therapy. However, high rates of retest positive are found among TV infected persons after single dose MTZ treatment. This has not been explained by drug resistance since in vitro resistance is only 2-5 %. Treatment failure can range from 7-10 % and even higher among HIV+ women. Treatment efficacy may be influenced by vaginal ecology. The origins of repeat positives need further explanation and better treatment options are needed.
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Affiliation(s)
- Patricia Kissinger
- School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street Suite 2004, New Orleans, Louisiana, 70112, USA.
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43
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Sutcliffe S, Alderete JF, Neace C, Joyce PA, Gaydos CA, Huth JIA, Mucci LA, Signorello LB. Persistence of Trichomonas vaginalis serostatus in men over time. Cancer Causes Control 2015. [PMID: 26223890 DOI: 10.1007/s10552-015-0642-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Previous epidemiologic studies have observed positive associations between Trichomonas vaginalis (Tv) serostatus and both prostate cancer (PCa) risk and mortality. However, only a few small older studies have examined Tv antibody persistence over time, all of which were composed mainly of female patients. Therefore, we examined Tv antibody persistence over time, as well as intra-individual variability, among middle- to older-aged men in the Southern Community Cohort Study (SCCS). METHODS We tested baseline and repeat plasma specimens (collected 1-3 years later) from 248 male participants for Tv antibodies. We used the same enzyme-linked immunosorbent assay as in previous studies of Tv serostatus and PCa. RESULTS At baseline, 46 (18.5 %) participants were seropositive for Tv infection. Seventy-six percent of these men were still seropositive 1-3 years later. A similar proportion of men "seroconverted" (4.0 %) as "seroreverted" (4.4 %), all of whom had absorbance values near the cutoff point for seropositivity. Overall, substantial agreement was observed between baseline and repeat serostatus (κ = 0.72, 95 % confidence interval 0.60-0.83). CONCLUSION Tv seropositivity was largely persistent between plasma specimens collected 1-3 years apart from middle- to older-aged men. These high levels of persistence are similar to those observed for other sexually transmitted infections frequently investigated in relation to PCa.
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Affiliation(s)
- Siobhan Sutcliffe
- Division of Public Health Sciences and the Alvin J. Siteman Cancer Center, Department of Surgery, Washington University School of Medicine, 660 S. Euclid Ave., Box 8100, Rm. 208S, St. Louis, MO, 63110, USA.
| | - John F Alderete
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Calvin Neace
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Patrick A Joyce
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Charlotte A Gaydos
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - James I A Huth
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Lorelei A Mucci
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Lisa B Signorello
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
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Comparison between mixed lysate antigen and α-actinin antigen in ELISA for serodiagnosis of trichomoniasis. Parasitol Int 2015; 64:405-7. [PMID: 26072305 DOI: 10.1016/j.parint.2015.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 05/20/2015] [Accepted: 06/09/2015] [Indexed: 11/23/2022]
Abstract
The aim of this study was to identify an antigen suitable for ELISA for serodiagnosis of Trichomonas vaginalis (T. vaginalis) infection. Mixed lysate antigen (Ag) from eight strains of T. vaginalis and recombinant α-actinin protein was compared. The sera of three groups were examined by ELISA: 73 women infected with trichomoniasis served as a positive control, 31 male volunteers as a negative control, and 424 women attending an outpatient health screening at Hanyang University Guri Hospital. Based on the cutoff optical density for each Ag obtained with a negative control, the serosensitivity of the mixed lysate Ag (79.5%) was significantly higher than that of the α-actinin (52.1%) in the 73 patients with trichomoniasis. The specificity using lysate Ag and α-actinin was 100% and 96.8%, respectively. On the other hand, the positivity rate in 424 outpatients was 39.2% and 11.8% with mixed lysate and α-actinin Ag, respectively. Taken together, mixed lysate Ag showed higher sensitivity and specificity than α-actinin. Therefore, mixed lysate may be a better Ag than α-actinin for ELISA for the diagnosis of trichomoniasis.
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Abstract
Trichomonas vaginalis is the most common nonviral sexually transmitted infection (STI) in the world. It was once thought to be a nuisance STI, but it is now being recognized as an important source of reproductive morbidity and a facilitator of HIV transmission and acquisition, and thus it is an important public health problem. The prevalence of T. vaginalis varies greatly by geography and risk group, but is more common among persons of African descent and appears to increase with age, though this may be a screening phenomenon. Wet mount and culture are simple diagnostics, but have lower sensitivity than nucleic acid amplification techniques presently approved for women only. Single dose (2 g) metronidazole (MTZ) for both the index patient and their sexual partners is the preferred treatment. High rates of retest positivity are found after single-dose treatment which are likely due to clinical resistance rather than re-infection and/or drug resistance.
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Affiliation(s)
- Patricia Kissinger
- School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street SL-18, New Orleans, LA, 70112, USA,
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46
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Coceres VM, Alonso AM, Nievas YR, Midlej V, Frontera L, Benchimol M, Johnson PJ, de Miguel N. The C-terminal tail of tetraspanin proteins regulates their intracellular distribution in the parasite Trichomonas vaginalis. Cell Microbiol 2015; 17:1217-29. [PMID: 25703821 DOI: 10.1111/cmi.12431] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 02/18/2015] [Accepted: 02/18/2015] [Indexed: 01/05/2023]
Abstract
The parasite Trichomonas vaginalis is the causative agent of trichomoniasis, a prevalent sexually transmitted infection. Here, we report the cellular analysis of T.vaginalis tetraspanin family (TvTSPs). This family of membrane proteins has been implicated in cell adhesion, migration and proliferation in vertebrates. We found that the expression of several members of the family is up-regulated upon contact with vaginal ectocervical cells. We demonstrate that most TvTSPs are localized on the surface and intracellular vesicles and that the C-terminal intracellular tails of surface TvTSPs are necessary for proper localization. Analyses of full-length TvTSP8 and a mutant that lacks the C-terminal tail indicates that surface-localized TvTSP8 is involved in parasite aggregation, suggesting a role for this protein in parasite : parasite interaction.
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Affiliation(s)
- V M Coceres
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnologico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomus, B7130IWA, Argentina
| | - A M Alonso
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnologico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomus, B7130IWA, Argentina
| | - Y R Nievas
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnologico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomus, B7130IWA, Argentina
| | - V Midlej
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Brazil
| | - L Frontera
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnologico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomus, B7130IWA, Argentina
| | - M Benchimol
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Brazil.,Unigranrio, Universidade do Grande Rio, Rio de Janeiro, Brazil
| | - P J Johnson
- Department of Microbiology, Immunology, Molecular Genetics, University of California, Los Angeles, CA, 90095-1489, USA
| | - N de Miguel
- Laboratorio de Parásitos Anaerobios, Instituto de Investigaciones Biotecnológicas-Instituto Tecnologico Chascomús (IIB-INTECH), CONICET-UNSAM, Chascomus, B7130IWA, Argentina
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Sutcliffe S, Till C, Jenkins FJ, Gaydos CA, Goodman PJ, Hoque AM, Hsing AW, Thompson IM, Nelson WG, De Marzo AM, Platz EA. Prospective study of human herpesvirus type 8 serostatus and prostate cancer risk in the placebo arm of the Prostate Cancer Prevention Trial. Cancer Causes Control 2014; 26:35-44. [PMID: 25359302 DOI: 10.1007/s10552-014-0480-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 10/15/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Human herpesvirus type 8 (HHV-8), a gamma herpesvirus associated with Kaposi's sarcoma, has been proposed as a candidate risk factor for prostate cancer (PCa) because of its detection in benign and malignant prostate specimens, and its relation with histologic prostatic inflammation. We investigated the possible relation between pre-diagnostic HHV-8 infection and PCa risk in a case-control study sampled from the placebo arm of the Prostate Cancer Prevention Trial. METHODS We defined cases as men with a confirmed diagnosis of PCa after visit 2 (n = 315) and controls as men not diagnosed with PCa during the trial who also had a negative end-of-study prostate biopsy (n = 315). We tested sera from visit 2 for IgG antibodies against HHV-8 using a monoclonal antibody-enhanced immunofluorescence assay against multiple lytic HHV-8 antigens. RESULTS The adjusted seroprevalence of HHV-8 infection was 11.6 % for cases and 11.0 % for controls (p = 0.81). No association was observed between HHV-8 seropositivity and PCa risk (OR 1.06, 95 % CI 0.65-1.76). CONCLUSION Our findings of a null association between HHV-8 seropositivity and PCa risk do not support an association between HHV-8 infection and PCa development, consistent with the general tendency of the epidemiologic literature to date.
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Affiliation(s)
- Siobhan Sutcliffe
- Division of Public Health Sciences, Department of Surgery, The Alvin J. Siteman Cancer Center, Washington University School of Medicine, 660 S. Euclid Ave., Box 8100, Rm. 208S, St. Louis, MO, 63110, USA,
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Aminou HA, Alam-Eldin YH, Hashem HA. Effect of Nigella sativa alcoholic extract and oil, as well as Phaseolus vulgaris (kidney bean) lectin on the ultrastructure of Trichomonas vaginalis trophozoites. J Parasit Dis 2014; 40:707-13. [PMID: 27605771 DOI: 10.1007/s12639-014-0564-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 09/04/2014] [Indexed: 01/18/2023] Open
Abstract
Trichomonas vaginalis is a parasitic protozoan that is the aetiological agent of trichomoniasis, the most common non-viral sexually transmitted disease worldwide. Currently, the compound of choice for the treatment of T. vaginalis infections is metronidazole, however, it has many side effects and an increase in metronidazole-resistant trichomoniasis has been observed. Medicinal plants could be a source of new antiprotozoal drugs with high activity, low toxicity and lower price. The present work was carried out to investigate the therapeutic potential of Nigella sativa alcoholic extract and oil, as well as Phaseolus vulgaris (kidney bean) lectin and their in vitro activity on the ultrastructure of T. vaginalis trophozoites in comparison to metronidazole, as detected by transmission electron microscope. Both N. sativa oil and P. vulgaris lectin showed high toxic effect as evidenced by severe cell damage with cytoplasmic and nuclear destruction, while the effect of N. sativa alcoholic extract was moderate. Therefore, these two extracts could offer an effective, cheaper and more safe alternative for metronidazole in treatment of trichomoniasis.
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Affiliation(s)
- Heba AbdelKader Aminou
- Medical Parasitology Department, Faculty of Medicine, Ain Shams University, Cairo, 11566 Egypt
| | | | - Hanan Ahmed Hashem
- Botany Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566 Egypt
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49
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Sexually transmitted infections and prostate cancer risk: a systematic review and meta-analysis. Cancer Epidemiol 2014; 38:329-38. [PMID: 24986642 DOI: 10.1016/j.canep.2014.06.002] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/04/2014] [Accepted: 06/10/2014] [Indexed: 12/25/2022]
Abstract
Prostate cancer (PC) is the second most incident cancer and the sixth cause of death by cancer in men worldwide. Despite extensive research efforts, no modifiable risk factors have been consistently identified for PC risk. A number of studies have focused on possible relationships between sexually transmitted infections (STIs) and PC. We performed a meta-analysis to explore the association between infection caused by Neisseria gonorrheae, Treponema pallidum, Chlamydia trachomatis, Trichomonas vaginalis, Ureaplasma urealyticum, Mycoplasma hominis, Herpes Simplex Virus types 1 and 2, Human Herpes Virus 8 and Cytomegalovirus, and PC. We conducted a comprehensive, systematic bibliographic search of medical literature to identify relevant studies. We calculated summary relative risk (SRR) and 95% confidence intervals (CI) for the association between each STI and PC through random effect models. Subgroup, meta-regression and sensitivity analyses were carried out to detect between-study heterogeneity and bias. We included 47 studies published between 1971 and 2011. Men who reported having ever had any STI in lifetime had an increased PC (SRR 1.49, 95% CI 1.19-1.92). We found a significantly increased PC risk in men having had gonorrhoea (SRR 1.20, 95% CI 1.05-1.37). No other single STI was significantly associated with PC. Due to high incidence of both STIs and PC worldwide, prevention of STIs may help preventing a considerable number of PC cases.
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50
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Gurel B, Lucia MS, Thompson IM, Goodman PJ, Tangen CM, Kristal AR, Parnes HL, Hoque A, Lippman SM, Sutcliffe S, Peskoe SB, Drake CG, Nelson WG, De Marzo AM, Platz EA. Chronic inflammation in benign prostate tissue is associated with high-grade prostate cancer in the placebo arm of the prostate cancer prevention trial. Cancer Epidemiol Biomarkers Prev 2014; 23:847-56. [PMID: 24748218 PMCID: PMC4012292 DOI: 10.1158/1055-9965.epi-13-1126] [Citation(s) in RCA: 171] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Chronic inflammation is hypothesized to influence prostate cancer development, although a definitive link has not been established. METHODS Prostate cancer cases (N = 191) detected on a for-cause (clinically indicated) or end-of-study (protocol directed) biopsy, and frequency-matched controls (N = 209), defined as negative for cancer on an end-of-study biopsy, were sampled from the placebo arm of the Prostate Cancer Prevention Trial. Inflammation prevalence and extent in benign areas of biopsy cores were visually assessed using digital images of hematoxylin and eosin-stained sections. Logistic regression was used to estimate associations. RESULTS Of note, 86.2% of cases and 78.2% of controls had at least one biopsy core (of three assessed) with inflammation in benign areas, most of which was chronic. Men who had at least one biopsy core with inflammation had 1.78 [95% confidence interval (CI), 1.04-3.06] times the odds of prostate cancer compared with men who had zero cores with inflammation. The association was stronger for high-grade disease (Gleason sum 7-10, N = 94; OR, 2.24; 95% CI, 1.06-4.71). These patterns were present when restricting to cases and controls in whom intraprostatic inflammation was the least likely to have influenced biopsy recommendation because their prostate-specific antigen (PSA) was low (<2 ng/mL at biopsy). CONCLUSION Inflammation, most of which was chronic, was common in benign prostate tissue, and was positively associated with prostate cancer, especially high grade. The association did not seem to be due to detection bias. IMPACT This study supports an etiologic link between inflammation and prostate carcinogenesis, and suggests an avenue for prevention by mitigating intraprostatic inflammation.
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Affiliation(s)
- Bora Gurel
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
| | | | - Ian M. Thompson
- Department of Urology, University of Texas Health Sciences Center San Antonio, San Antonio, TX
| | - Phyllis J. Goodman
- SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Catherine M. Tangen
- SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Alan R. Kristal
- Cancer Prevention Program, Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Howard L. Parnes
- Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD
| | - Ashraful Hoque
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Scott M. Lippman
- Moores Cancer Center, University of California San Diego, La Jolla, CA
| | - Siobhan Sutcliffe
- Division of Public Health Sciences and the Alvin J. Siteman Cancer Center, Department of Surgery, Washington University School of Medicine, St. Louis, MO
| | - Sarah B. Peskoe
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Charles G. Drake
- Department of Immunology, Johns Hopkins School of Medicine, Baltimore, MD
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - William G. Nelson
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Angelo M. De Marzo
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Elizabeth A. Platz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
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