1
|
Kyathanahalli C, Snedden M, Singh L, Regalia C, Keenan-Devlin L, Borders AE, Hirsch E. Maternal plasma and salivary anelloviruses in pregnancy and preterm birth. Front Med (Lausanne) 2023; 10:1191938. [PMID: 37396897 PMCID: PMC10309558 DOI: 10.3389/fmed.2023.1191938] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/23/2023] [Indexed: 07/04/2023] Open
Abstract
Introduction Human anelloviruses, including torque teno virus (TTV) and torque teno mini virus (TTMV), are ubiquitous in the general population and have no known pathogenicity. We investigated the prevalence and viral load of TTV and TTMV in plasma and saliva over pregnancy, and assessed their association with spontaneous or medically indicated preterm birth. Methods This is a secondary analysis of the Measurement of Maternal Stress (MOMS) study, which recruited 744 individuals with singleton pregnancies from 4 US sites (Chicago, Pittsburgh, San Antonio, and rural Pennsylvania). Baseline outpatient visits took place in the second trimester (between 12'0 and 20'6/7 weeks' gestation), and follow-up visits in the third trimester (between 32'0 and 35'6/7 weeks' gestation). In a case-control study design, participants who delivered preterm (<37 weeks) resulting from spontaneous labor and/or preterm premature rupture of membranes ("sPTB") were compared with participants experiencing medically indicated preterm birth ("iPTB"), or delivery at term ("controls"). Plasma and saliva samples obtained during the second and third trimesters were tested for the presence and quantity of TTV and TTMV using real-time PCR. Demographic data were obtained via self-report, and clinical data via medical record review by trained research personnel. Results TTV was detected in plasma from 81% (second trimester) and 77% (third trimester) of participants, and in saliva from 64 and 60%. Corresponding detection rates for TTMV were 59 and 41% in plasma, and 35 and 24% in saliva. TTV and TTMV concentrations were similar between matched plasma and saliva samples. TTV prevalence and concentrations were not significantly different between groups (sPTB, iPTB, and controls). However, plasma TTMV in the third trimester was associated with sPTB and earlier gestational age at delivery. The iPTB group was not different from either the sPTB or the control group. In saliva, concentrations of TTV and TTMV were similar among the three groups. Both TTV and TTMV were more prevalent with increasing parity and were more common in Black and Hispanic participants compared to non-Hispanic White participants. Conclusion Anellovirus presence (specifically, TTMV) in the third trimester may be associated with preterm birth. Whether this association is causative remains to be determined.
Collapse
Affiliation(s)
- Chandrashekara Kyathanahalli
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, United States
- Department of Obstetrics and Gynecology, Pritzker School of Medicine, University of Chicago, Chicago, IL, United States
| | - Madeline Snedden
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, United States
| | - Lavisha Singh
- Department of Statistics, NorthShore University HealthSystem, Evanston, IL, United States
| | - Camilla Regalia
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, United States
| | - Lauren Keenan-Devlin
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, United States
- Department of Obstetrics and Gynecology, Pritzker School of Medicine, University of Chicago, Chicago, IL, United States
| | - Ann E. Borders
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, United States
- Department of Obstetrics and Gynecology, Pritzker School of Medicine, University of Chicago, Chicago, IL, United States
- Center for Healthcare Studies, Institute for Public Health and Medicine, University of Chicago Pritzker School of Medicine, Northwestern University, Evanston, IL, United States
| | - Emmet Hirsch
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, United States
- Department of Obstetrics and Gynecology, Pritzker School of Medicine, University of Chicago, Chicago, IL, United States
| |
Collapse
|
2
|
Eldem V, Kuralay SC, Özdoğan G, Özçelik GH, Aydın D, Çakmak G, Gürler MÖ, Çay SB, Çınar YU, Dikmen F, Yusuf I, Obut O, Kayalar Ö, Zararsız GE, Edizadeh M, Zararsız G, Akdeniz E, Özgür H, Tekin IM. Comprehensive analysis of circulating viral DNA in maternal plasma at population-scale using low-pass whole-genome sequencing. Genomics 2023; 115:110556. [PMID: 36599399 DOI: 10.1016/j.ygeno.2022.110556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/04/2022] [Accepted: 12/30/2022] [Indexed: 01/02/2023]
Abstract
As the most readily adopted molecular screening test, low-pass WGS of maternal plasma cell-free DNA for aneuploidy detection generates a vast amount of genomic data. This large-scale method also allows for high-throughput virome screening. NIPT sequencing data, yielding 6.57 terabases of data from 187.8 billion reads, from 12,951 pregnant Turkish women was used to investigate the prevalence and abundance of viral DNA in plasma. Among the 22 virus sequences identified in 12% of participants were human papillomavirus, herpesvirus, betaherpesvirus and anellovirus. We observed a unique pattern of circulating viral DNA with a high prevalence of papillomaviruses. The prevalence of herpesviruses/anellovirus was similar among Turkish, European and Dutch populations. Hepatitis B prevalence was remarkably low in Dutch, European and Turkish populations, but higher in China. WGS data revealed that herpesvirus/anelloviruses are naturally found in European populations. This represents the first comprehensive research on the plasma virome of pregnant Turkish women.
Collapse
Affiliation(s)
- Vahap Eldem
- Department of Biology, Faculty of Science, Istanbul University, Istanbul 34134, Turkey.
| | - Selim Can Kuralay
- Department of Biology, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Gülperi Özdoğan
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | | | - Dilşah Aydın
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | - Gökçe Çakmak
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | | | - Selahattin Barış Çay
- Department of Biology, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Yusuf Ulaş Çınar
- Department of Biology, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Fatih Dikmen
- Department of Biology, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Ishak Yusuf
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | - Onur Obut
- Department of Biology, Faculty of Science, Istanbul University, Istanbul 34134, Turkey
| | - Özgecan Kayalar
- Koc University Research Center for Translational Medicine (KUTTAM), Koc University School of Medicine, Istanbul 34010, Turkey
| | - Gözde Ertürk Zararsız
- Department of Biostatistics, Erciyes University Medical Faculty, Kayseri 38280, Turkey; Erciyes University, Drug Application and Research Center (ERFARMA), Kayseri 38280, Turkey
| | - Masoud Edizadeh
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | - Gökmen Zararsız
- Department of Biostatistics, Erciyes University Medical Faculty, Kayseri 38280, Turkey; Erciyes University, Drug Application and Research Center (ERFARMA), Kayseri 38280, Turkey
| | - Eren Akdeniz
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | - Hilal Özgür
- GENOKS Genetic Disease Diagnostic Center, Ankara 06560, Turkey
| | | |
Collapse
|
3
|
Spandole-Dinu S, Cimponeriu D, Stoica I, Apircioaie O, Gogianu L, Berca LM, Nica S, Toma M, Nica R. Phylogenetic analysis of torque teno virus in Romania: possible evidence of distinct geographical distribution. Arch Virol 2022; 167:2311-2318. [PMID: 35962263 PMCID: PMC9374574 DOI: 10.1007/s00705-022-05559-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/24/2022] [Indexed: 11/26/2022]
Abstract
Torque teno virus (TTV) is highly prevalent, but little is known about its circulation in humans. Here, we investigated the geographical distribution and phylogeny of TTV in Romania. A fragment of TTV untranslated region B was sequenced in samples from volunteers across the country. Additional sequences from dialyzed patients were also included in the study. Phylogenetic analysis showed that more than 80% of Romanian sequences clustered with isolates assigned to the species Torque teno virus 1 and Torque teno virus 3 (former genogroup 1), and this analysis discriminated between isolates from the North-East and West regions. Further studies assessing the pathogenic potential of TTV isolates should employ analysis based on genomic regions with phylogenetic resolution below the species level.
Collapse
Affiliation(s)
- Sonia Spandole-Dinu
- Department of Genetics, University of Bucharest, Intrarea Portocalelor 1-3, 060101, Bucharest, Romania
- Earth, Environmental and Life Sciences Division, The Research Institute of the University of Bucharest (ICUB), Bucharest, Romania
| | - Dănuţ Cimponeriu
- Department of Genetics, University of Bucharest, Intrarea Portocalelor 1-3, 060101, Bucharest, Romania.
| | - Ileana Stoica
- Department of Genetics, University of Bucharest, Intrarea Portocalelor 1-3, 060101, Bucharest, Romania
| | - Oana Apircioaie
- Department of Genetics, University of Bucharest, Intrarea Portocalelor 1-3, 060101, Bucharest, Romania
| | - Larisa Gogianu
- Department of Genetics, University of Bucharest, Intrarea Portocalelor 1-3, 060101, Bucharest, Romania
| | - Lavinia Mariana Berca
- Molecular Biology Laboratory, National R&D Institute for Food Bioresources, Bucharest, Romania
| | - Silvia Nica
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
- Emergency University Hospital, Bucharest, Romania
| | - Mihai Toma
- Emergency Department, Central Military Emergency Clinical Hospital, Bucharest, Romania
| | - Remus Nica
- Surgery Clinic II, Central Military Emergency Clinical Hospital, Bucharest, Romania
| |
Collapse
|
4
|
Fernández-Ruiz M, Albert E, Giménez E, Ruiz-Merlo T, Parra P, López-Medrano F, San Juan R, Polanco N, Andrés A, Navarro D, Aguado JM. Monitoring of alphatorquevirus DNA levels for the prediction of immunosuppression-related complications after kidney transplantation. Am J Transplant 2019; 19:1139-1149. [PMID: 30346659 DOI: 10.1111/ajt.15145] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/10/2018] [Accepted: 09/29/2018] [Indexed: 01/25/2023]
Abstract
The replication kinetics of nonpathogenic anelloviruses belonging to the Alphatorquevirus genus (such as torque teno virus) might reflect the overall state of posttransplant immunosuppression. We analyzed 221 kidney transplant (KT) recipients in whom plasma alphatorquevirus DNA load was quantified by real-time polymerase chain reaction at baseline and regularly through the first 12 posttransplant months. Study outcomes included posttransplant infection and a composite of opportunistic infection and/or de novo malignancy (immunosuppression-related adverse event [iRAE]). Alphatorquevirus DNA loads at month 1 were higher among patients who subsequently developed posttransplant infection (P = .023) or iRAE (P = .009). Likewise, those with iRAE beyond months 3 and 6 also exhibited higher peak viral loads over the preceding periods. Areas under the curve for log10 alphatorquevirus DNAemia estimated by months 1 or 6 were significantly higher in patients experiencing study outcomes. Alphatorquevirus DNA loads above 3.15 and 4.56 log10 copies/mL at month 1 predicted the occurrence of posttransplant infection (adjusted hazard ratio [aHR]: 2.88; 95% confidence interval [CI]: 1.13-7.36; P = .027) and iRAE (aHR: 5.17; 95% CI: 2.01-13.33; P = .001). In conclusion, posttransplant monitoring of plasma alphatorquevirus DNA kinetics may be useful to identify KT recipients at increased risk of immunosuppression-related complications.
Collapse
Affiliation(s)
- Mario Fernández-Ruiz
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre," Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Eliseo Albert
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain
| | - Estela Giménez
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain
| | - Tamara Ruiz-Merlo
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre," Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Patricia Parra
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre," Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco López-Medrano
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre," Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael San Juan
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre," Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| | - Natalia Polanco
- Department of Nephrology, Hospital Universitario "12 de Octubre", Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain
| | - Amado Andrés
- Department of Nephrology, Hospital Universitario "12 de Octubre", Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain
| | - David Navarro
- Microbiology Service, Hospital Clínico Universitario, Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain.,Department of Microbiology, School of Medicine, University of Valencia, Valencia, Spain
| | - José María Aguado
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre," Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), School of Medicine, Universidad Complutense, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI RD16/0016), Instituto de Salud Carlos III, Madrid, Spain
| |
Collapse
|
5
|
Pou C, Barrientos-Somarribas M, Marin-Juan S, Bogdanovic G, Bjerkner A, Allander T, Gustafsson B, Andersson B. Virome definition in cerebrospinal fluid of patients with neurological complications after hematopoietic stem cell transplantation. J Clin Virol 2018; 108:112-120. [DOI: 10.1016/j.jcv.2018.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/06/2018] [Accepted: 09/18/2018] [Indexed: 01/16/2023]
|
6
|
Spandole-Dinu S, Cimponeriu DG, Crăciun AM, Radu I, Nica S, Toma M, Alexiu OA, Iorga CS, Berca LM, Nica R. Prevalence of human anelloviruses in Romanian healthy subjects and patients with common pathologies. BMC Infect Dis 2018; 18:334. [PMID: 30016934 PMCID: PMC6050727 DOI: 10.1186/s12879-018-3248-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 07/10/2018] [Indexed: 01/03/2023] Open
Abstract
Background Human anelloviruses (TTV, TTMDV and TTMV) are at high prevalence all across the globe, having also a controversial disease-inducing potential. This study aimed to estimate the prevalence of anelloviral DNA in the Romanian human population and to investigate the association of infections with common pathologies in Romanian population. Methods After informed consent, blood samples were collected from 2000 subjects represented by: clinically healthy individuals (n = 701) and a group of patients with pathologies linked to low grade inflammation or alteration of carbohydrate metabolism (n = 1299). All samples were analysed for the presence of TTV, TTMDV and TTMV DNA by hemi-nested PCR. Results The prevalence of TTV, TTMDV and TTMV in the studied population was 68.2, 54.4%, respectively 40.1%, lower than the recent reports from other geographic regions. The three viral species were significantly more frequent in the group of patients compared to the healthy subjects and were associated with type 2 diabetes mellitus. The presence of anelloviral DNA was also associated with medical procedures (e.g. haemodialysis/transfusions, surgical procedures) and previous hepatitis A virus infection. Lifestyle choices related to alcohol consumption, smoking, physical activity and living environment were not associated with differences in distribution of the three viruses. Conclusion Further evidence is needed to establish a correlation between infection with human anelloviruses and a pathology or group of pathologies.
Collapse
Affiliation(s)
| | | | - Anne-Marie Crăciun
- Nutrition and Metabolic Diseases Dr. N. Paulescu, National Institute of Diabetes, Bucharest, Romania
| | - Irina Radu
- Department of Genetics, University of Bucharest, Bucharest, Romania
| | - Silvia Nica
- Bucharest Emergency University Hospital, Bucharest, Romania
| | - Mihai Toma
- Department of Genetics, University of Bucharest, Bucharest, Romania.,Dr. Carol Davila Central Military Emergency University Hospital, Bucharest, Romania
| | | | - Corneliu Sorin Iorga
- National Institute of Research and Development for Food Bioresources, 6 Dinu Vintila, 021102, Bucharest, Romania
| | - Lavinia-Mariana Berca
- National Institute of Research and Development for Food Bioresources, 6 Dinu Vintila, 021102, Bucharest, Romania.
| | - Remus Nica
- Dr. Carol Davila Central Military Emergency University Hospital, Bucharest, Romania
| |
Collapse
|
7
|
Hettmann A, Demcsák A, Bach Á, Decsi G, Dencs Á, Pálinkó D, Rovó L, Nagy K, Minarovits J, Takács M. Detection and Phylogenetic Analysis of Torque Teno Virus in Salivary and Tumor Biopsy Samples from Head and Neck Carcinoma Patients. Intervirology 2016; 59:123-129. [DOI: 10.1159/000452974] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 10/31/2016] [Indexed: 11/19/2022] Open
|
8
|
Takemoto AY, Okubo P, Saito PK, Yamakawa RH, Watanabe MAE, Veríssimo da Silva Junior W, Borelli SD, Bedendo J. Torque teno virus among dialysis and renal-transplant patients. Braz J Microbiol 2015. [PMID: 26221122 PMCID: PMC4512073 DOI: 10.1590/s1517-838246120131195] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Patients who undergo dialysis treatment or a renal transplant have a high risk of blood-borne viral infections, including the Torque teno virus (TTV). This study identified the presence of TTV and its genome groups in blood samples from 118 patients in dialysis and 50 renal-transplant recipients. The research was conducted in a hospital in the city of Maringá, state of Paraná. The viral DNA, obtained from whole blood, was identified by using two nested Polymerase Chain Reactions (PCR). The frequencies of TTV were 17% and 36% in dialysis patients using the methodology proposed by Nishizawa et al . (1997) and Devalle and Niel (2004) , respectively, and 10% and 54% among renal-transplant patients. There was no statistically significant association between the frequency of the pathogen and the variables: gender, time in dialysis, time since transplant, blood transfusions, and the concomitant presence of hepatitis B, for either the dialysis patients or the renal-transplant recipients. Among dialysis patients and renal-transplant recipients, genogroup 5 was predominant (48% and 66% respectively), followed by genogroup 4 (37% and 48%) and genogroup 1 (23% and 25%). Genogroup 2 was present in both groups of patients. Some patients had several genogroups, but 46% of the dialysis patients and 51% of the renal-transplant recipients had only a single genogroup. This study showed a high prevalence of TTV in dialysis patients and renal-transplant recipients.
Collapse
Affiliation(s)
| | - Patrícia Okubo
- Departamento de Enfermagem, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Patricia Keiko Saito
- Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Roger Haruki Yamakawa
- Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | | | | | | | - João Bedendo
- Departamento de Enfermagem, Universidade Estadual de Maringá, Maringá, PR, Brazil
| |
Collapse
|
9
|
Massaú A, Martins C, Nachtigal GC, Araújo AB, Rossetti ML, Niel C, da Silva CMD. The high prevalence of Torque teno virus DNA in blood donors and haemodialysis patients in southern Brazil. Mem Inst Oswaldo Cruz 2013; 107:684-6. [PMID: 22850961 DOI: 10.1590/s0074-02762012000500017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Accepted: 01/11/2012] [Indexed: 12/26/2022] Open
Abstract
This study investigates the frequency of Torque teno virus (TTV) infection in 150 blood donors and 77 patients requiring haemodialysis in southern Brazil. Plasma samples were screened for TTV DNA using polymerase chain reaction (PCR). The prevalences of TTV among blood donors and patients requiring haemodialysis were 73.3% and 68.8%, respectively. The presence of TTV was correlated with age in the blood donors (p = 0.024). In haemodialysis patients, no association was found between TTV infection and the demographic parameters (age, sex and education), the duration of haemodialysis or a history of blood transfusion. This study is the first to evaluate the prevalence of TTV infection in Brazilian patients requiring haemodialysis.
Collapse
Affiliation(s)
- Aline Massaú
- Programa de Pós-graduação em Diagnóstico Genético e Molecula, Universidade Luterana do Brasil, Canoas, RS, Brasil, 92425-900
| | | | | | | | | | | | | |
Collapse
|
10
|
Fehér E, Kardos G, Gáll T, Kis A, Gergely L, Szarka K. Comparison of diversity of torque teno virus 1 in different mucosal tissues and disorders. Acta Microbiol Immunol Hung 2011; 58:319-37. [PMID: 22207290 DOI: 10.1556/amicr.58.2011.4.8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Diversity of TTV1 was assessed in the head and neck region in patients with potentially malignant (oral lichen planus, oral leukoplakia) and malignant lesions (oral and laryngeal squamous cell cancers) and was compared to that found in the uterine cervix (cervical atypia and cervical cancer) by directly sequencing the NG061-063 segment of ORF1. These sequences were classified by the formerly used genogroup-genotype system as well as by the newly accepted species classification by aligning with the corresponding region of the type sequences of the 29 TTV species. All sequences obtained during the study clustered together with the TTV1 type sequence; to express diversity within TTV1, genotypes and subtypes of the former classification were used.The commonest subtypes were 2c followed by 2b, 1a and 1b. Subtypes 2b and 2c were evenly distributed among cervical samples; subtype 1a was more frequent in patients with cervical atypia or cancer. Subtypes 2c was more frequent than 2b in head and neck lesions. In conclusion, genotype and even subtype distribution may be important in association with diseases, therefore using this classification for characterization of intraspecies diversity of TTV1 is proposed.
Collapse
Affiliation(s)
- Enikő Fehér
- 1 University of Debrecen Department of Medical Microbiology, Medical and Health Science Center Debrecen Hungary
| | - Gábor Kardos
- 1 University of Debrecen Department of Medical Microbiology, Medical and Health Science Center Debrecen Hungary
| | - Tamás Gáll
- 1 University of Debrecen Department of Medical Microbiology, Medical and Health Science Center Debrecen Hungary
| | - Andrea Kis
- 1 University of Debrecen Department of Medical Microbiology, Medical and Health Science Center Debrecen Hungary
| | - Lajos Gergely
- 1 University of Debrecen Department of Medical Microbiology, Medical and Health Science Center Debrecen Hungary
| | - Krisztina Szarka
- 1 University of Debrecen Department of Medical Microbiology, Medical and Health Science Center Debrecen Hungary
| |
Collapse
|
11
|
Thom K, Cleland A, Salakova M, Candotti D, Petrik J. Prevalence and genetic heterogeneity of SEN virus genotypes D and H in blood donors from Central and Western Europe and West Africa. Transfus Med 2010; 21:42-50. [PMID: 20880324 DOI: 10.1111/j.1365-3148.2010.01039.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVES To establish prevalence and phylogenetic relationship of SEN virus (SENV) D and H in blood donors from Scotland, Czech Republic and Ghana. AIM To compare the data between three regions with differing prevalence of blood-borne viruses. BACKGROUND Anelloviruses are a ubiquitous group of viruses without a clear disease association. Although there is little evidence that they are pathogenic per se, they may have the ability to modify ongoing disease processes. They have a high degree of heterogeneity both within populations and across geographic regions. MATERIALS AND METHODS Three sets of donor samples were analysed by nested polymerase chain reaction (PCR) and hybridisation. A proportion of amplified samples were sequenced and phylogenetic analysis was carried out. RESULTS The prevalence figures (including mixed D + H infection) were established for SENV D: 1·0, 8·4 and 25·2% and H: 12·5, 34·8 and 61·0% in Scottish, Czech and Ghanaian blood donors, respectively. The compilation of prevalence figures indicates the changing ratio of SENV D/H in west-east direction, most obvious between Western Europe (D/H < 1) and far East Asia (D/H > 1). Phylogenetic analysis grouped the samples mostly in accordance with geographic origin, despite the variability of short sequence analysed. The previously indicated link between SENV prevalence and age was statistically significant in this study, only for SENV H in Czech samples. CONCLUSION SENV D and H appear to reflect the incidence of other blood-borne viruses in these locations. SENV H prevalence of 45·4% in Ghana represents the highest single-SENV-genotype prevalence described in blood donors to date.
Collapse
Affiliation(s)
- K Thom
- TTI Department, Scottish National Blood Transfusion Service, Edinburgh, UK
| | | | | | | | | |
Collapse
|
12
|
Vasilyev EV, Trofimov DY, Tonevitsky AG, Ilinsky VV, Korostin DO, Rebrikov DV. Torque Teno Virus (TTV) distribution in healthy Russian population. Virol J 2009; 6:134. [PMID: 19735552 PMCID: PMC2745379 DOI: 10.1186/1743-422x-6-134] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Accepted: 09/07/2009] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Torque teno virus (TTV) is a circular, single-stranded DNA virus that chronically infects healthy individuals of all ages worldwide. There is a lot of data on the prevalence and genetic heterogeneity of TTV in healthy populations and in patients with various diseases now available. However, little is known about TTV load among healthy human population. In this study we analyzed TTV load in the group of 512 Russian elite athletes, who are supposed to be, by some standards, the healthiest part of the human population. RESULTS The prevalence rate of TTV among the Russian Olympic Reserve members was 94% (for test sensitivity about 1000 genome equivalents per 1 ml of blood). Quantities varied from 103 (which corresponded to detection limit) to 1010 copies per 1 ml of blood, with median at 2.7 x 106 copies. CONCLUSION About 94% of healthy individuals in Russian population have more than 1000 TTV genome copies per 1 ml of blood. This result exceeds the previously published data, and can be explained by either more sensitive PCR test system or by higher TTV distribution in Russian population or both. TTV viral load neither depends on gender, nor age.
Collapse
Affiliation(s)
- Evgeny V Vasilyev
- DNA-Technology JSC, Kashirskoe shosse, 23-5-16, Moscow, 115478, Russia.
| | | | | | | | | | | |
Collapse
|
13
|
Alzahrani AJ, Dela Cruz DM, Obeid OE, Bukhari HA, Al-Qahtani AA, Al-Ahdal MN. Molecular detection of hepatitis B, hepatitis C, and torque teno viruses in drug users in Saudi Arabia. J Med Virol 2009; 81:1343-7. [PMID: 19551834 DOI: 10.1002/jmv.21487] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Injecting drug users are at increased risk of infection with hepatitis viruses and blood-borne pathogens. The aim of this study was to examine HBV, HCV, HDV, and TTV infections in Saudi drug users (N = 344). Extraction of nucleic acid from serum, reverse-transcription, amplification of viral nucleic acids, and HBV and HCV genotyping were done using established techniques. Of the analyzed samples, 41 (12%) contained detectable HBV DNA, 131 (38%) contained detectable HCV RNA, and 174 (51%) had detectable TTV DNA. The predominant HBV genotype was found to be genotype D and the predominant HCV genotype was found to be genotype 1b. All the samples were negative for HDV. Twelve samples (3.5%) were found to contain mixed HBV and HCV genomes, 24 samples (7%) were found to contain mixed HBV and TTV genomes, 82 samples (24%) were found to contain mixed HCV and TTV genomes, and 9 samples (2.6%) were found to contain mixed HBV, HCV, and TTV genomes. Identification of various infections in drug users will help the control of these infections in this group as well as in the community.
Collapse
|
14
|
Saláková M, Nemecek V, Tachezy R. TTV and HPV co-infection in cervical smears of patients with cervical lesions. BMC Infect Dis 2009; 9:118. [PMID: 19638204 PMCID: PMC2736169 DOI: 10.1186/1471-2334-9-118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Accepted: 07/28/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The female lower genital tract is a gateway for pathogens entering the host through the mucous membrane. One of the prevalent human viruses is Torque teno virus (TTV). The major reported routes of TTV transmission are fecal-oral and parenteral. Furthermore, other modes of transmission, e.g. sexual contact, are suggested. To investigate the sexual route of TTV transmission, cervical smears of healthy women and those with cervical lesions were screened for the presence of TTV DNA. METHODS TTV DNA was studied in cervical smears of 95 patients with cervical lesions and 55 healthy women. Paired serum samples were available from 55 and 42 women, respectively. All healthy women had normal cytology while 44 patients had histologically confirmed low-grade lesion (LGL) and 51 high-grade lesion (HGL). TTV DNA was detected with primers specific for the non-coding region. In 40 paired cervical smears and serum samples, the phylogenetic group of TTV isolates was determined. The presence of HPV DNA in cervical smears was detected by means of PCR with MY09/11 primers. RESULTS The prevalence of TTV DNA in cervical smears of healthy women was 52.7% and was comparable with that in paired serum samples (50%). Symptomatic women had significantly higher prevalence of TTV DNA in cervical smears (74.7%) than healthy controls. The TTV DNA prevalence in patient serum samples was 51%. The phylogenetic groups of TTV serum isolates were concordant with those of TTV from cervical smears of the same subjects. In cervical smears, a wider variety of TTV isolates was found. The viral loads in cervical smears were 10 to 1000 times as high as in sera. The HPV-positive study subjects had significantly higher TTV DNA prevalence than HPV negatives. The prevalence of TTV was not associated with disease severity. CONCLUSION High prevalence of TTV in cervical smears suggests that sexual transmission is another mode of expansion of TTV infection among the population. The higher viral load in cervical smears than in the respective serum samples might indicate active TTV replication in the female genital tract. Nevertheless, cooperation between TTV and HPV needs to be further investigated.
Collapse
Affiliation(s)
- Martina Saláková
- Department of Experimental Virology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic.
| | | | | |
Collapse
|
15
|
Taira O, Ogawa H, Nagao A, Tuchiya K, Nunoya T, Ueda S. Prevalence of swine Torque teno virus genogroups 1 and 2 in Japanese swine with suspected post-weaning multisystemic wasting syndrome and porcine respiratory disease complex. Vet Microbiol 2009; 139:347-50. [PMID: 19570625 DOI: 10.1016/j.vetmic.2009.06.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Revised: 05/27/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022]
Abstract
Torque teno virus (TTV) was first isolated from a human hepatitis patient in 1997. TTV was also identified in several animals, including pigs, cattle, sheep, cats and dogs. In this study, we analysed the prevalence of swine TTV genogroups 1 (TTV1) and 2 (TTV2) in Japanese swine populations with suspected post-weaning multisystemic wasting syndrome and porcine respiratory disease by using a nested polymerase chain reaction method. Of 153 serum samples from 16 different herds in Japan, TTV1 was detected in 46 samples (30%), TTV2 in 47 samples (31%) and both in 15 samples (10%). There was no significant difference in the detection rate among geographical regions. The overall prevalence rate of TTV genogroups was significantly lower in < or = 30-day-old pigs (11%) compared to that in older age groups (54-82%). These results suggest that swine TTV may be widespread in post-weaning pigs and could play aetiological roles in pig diseases in Japan. This is the first report on the prevalence of swine TTV in Japan.
Collapse
Affiliation(s)
- Osamu Taira
- Nippon Institute for Biological Science, 9-2221-1 Shinmachi, Ome, Tokyo 198-0024, Japan.
| | | | | | | | | | | |
Collapse
|
16
|
Naganuma M, Tominaga N, Miyamura T, Soda A, Moriuchi M, Moriuchi H. TT virus prevalence, viral loads and genotypic variability in saliva from healthy Japanese children. Acta Paediatr 2008; 97:1686-90. [PMID: 18671690 DOI: 10.1111/j.1651-2227.2008.00962.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
AIM TT virus (TTV) is genetically variable and widespread without apparent pathogenicity; however, its epidemiological features in children were not fully understood, partly because blood sampling is often unacceptable for healthy children. We therefore used saliva specimens to investigate epidemiology of TTV infection in early childhood. METHODS Saliva samples were collected from 83 1-month-old, 110 4-month-old and 49 42-month-old children. Peripheral blood mononuclear cells (PBMC) and saliva samples were obtained in pairs from 19 healthy adults aged 40 +/- 7 years. TTV DNA was detected and quantified by real-time PCR and classified into five genogroups (G1-G5) by a series of PCRs using genogroup-specific primer pairs. RESULTS TTV DNA was detected in 6, 34 and 90% of children aged 1, 4 and 42 months, respectively, and in 84% of adults. Comparable levels of TTV DNA were detected in pairs of saliva and PBMC. TTV loads in saliva were much higher in children than in adults. G3 was the most common genogroup in all age groups. The second most prevalent was G4 at 1-4 months of age and G1 thereafter. CONCLUSION The prevalence of TTV infection reached a plateau at or before 42 months; however, somehow different epidemiologic features were observed among genogroups.
Collapse
Affiliation(s)
- Masako Naganuma
- Department of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | | | | | | | | | | |
Collapse
|
17
|
Irshad M, Singh S, Irshad K, Agarwal SK, Joshi YK. Torque teno virus: Its prevalence and isotypes in North India. World J Gastroenterol 2008; 14:6044-51. [PMID: 18932284 PMCID: PMC2760200 DOI: 10.3748/wjg.14.6044] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the prevalence and genotype distribution of Torque teno virus (TTV) in patients with different liver diseases and chronic renal failure treated at a referral hospital in North India.
METHODS: Whereas prevalence of TTV was based on amplification of conserved region of ORF2 of TTV genome, the genotyping of TTV was carried out using restriction fragment length polymorphism (RFLP) procedure on the N22 region of ORF1.
RESULTS: TTV-DNA was detected in 137 of 513 (26.7%) patients with liver diseases and 38 of 65 (58.5%) patients with chronic renal failure. TTV was also detected in 27% of healthy controls. The sequence analysis of the PCR product from 10 randomly selected cases failed to show a significant sequence divergence when compared with that of the TRM1 isolate of TTV genotype 1. The results of genotyping in 55 randomly selected patients showed the presence of genotype 1 (G1) in 53 (96.4%) and genotype 2 (G2) in 2 cases (3.6%), respectively. Other genotypes were not identified in this patient subgroup, suggesting that G1 is predominant in this area. The results of genotyping by RFLP were also supported by phylogenetic tree analysis, where G1 was found to be the major genotype.
CONCLUSION: These results indicate that TTV is moderately present in Indian patients, with G1 to be the major genotype in North India. The pathogenicity and etiological role of TTV in different diseases is still a question mark and warrant further studies.
Collapse
|
18
|
de Castro Amarante MF, Kashima S, Covas DT. TT virus (TTV) genotyping in blood donors and multiple transfused patients in Brazil. Virus Genes 2007; 35:503-9. [PMID: 17570047 DOI: 10.1007/s11262-007-0124-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2007] [Accepted: 05/24/2007] [Indexed: 01/03/2023]
Abstract
TT virus (TTV) is widely distributed in the general population. The objective of the present study was to investigate the prevalence and distribution of TTV genotypes among blood donor candidates and multiple transfused patients in the Southeast region of the state of São Paulo, Brazil. TTV-DNA detection by amplification of a segment of the ORF-1 region, presented a prevalence of 11.9% in 270 serum samples from blood donors, of 46.2% in 18 samples from patients with coagulopathies, and of 31.8% in 15 samples from patients with hemoglobinopathies. When specific primers for the non-coding (UTR) region of the TTV genome were used the prevalences were 50.5%, 95.0%, and 82.0% for blood donors, patients with coagulopathies and patients with hemoglobinopathies, respectively. Positive samples from 49 individuals were sequenced and partial segments of 230 base pairs referring to the ORF-1 region of the TTV genome were used for the determination of their genotypes with the aid of phylogenetic analysis. The most frequent genotype was 1 (74.0%), followed by genotype 2 (26.0%). These data indicate a high prevalence of this virus in the populations of blood donors and transfused patients, providing further evidence for the role of transfusions as an efficient pathway in the transmission chain.
Collapse
Affiliation(s)
- Maria Fernanda de Castro Amarante
- Laboratory of Molecular Biology, Regional Blood Center of Ribeirão Preto, Rua Tenente Catão Roxo, 2501, Ribeirao Preto, Sao Paulo 14051-140, Brazil.
| | | | | |
Collapse
|
19
|
Irshad M, Joshi YK, Sharma Y, Dhar I. Transfusion transmitted virus: A review on its molecular characteristics and role in medicine. World J Gastroenterol 2006; 12:5122-34. [PMID: 16937521 PMCID: PMC4088008 DOI: 10.3748/wjg.v12.i32.5122] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The present review gives an updated overview of transfusion transmitted virus (TTV), a novel agent, in relation to its molecular characteristics, epidemiological features, modes of transmission, tissue tropism, pathogenesis, role in various diseases and its eradication from the body. TTV, a DNA virus, is a single stranded, non-enveloped, 3.8 kb long DNA virus with a small and covalently closed circular genome comprising 3852 bases. It was tentatively designated Circinoviridae virus. TTV genome sequence is heterogeneous and reveals the existence of six different genotypes and several subtypes. TTV has been reported to transmit not only via parenteral routes, but also via alternate routes. This virus has been detected in different non-human primates as well. At present, TTV is detected by polymerase chain reaction (PCR) with no other available diagnostic assays. It shows its presence globally and was detected in high percent populations of healthy persons as well as in various disease groups. Initially it was supposed to have strong association with liver disease; however, there is little evidence to show its liver tropism and contribution in causing liver diseases. It shows high prevalence in hemodialysis patients, pointing towards its significance in renal diseases. In addition, TTV is associated with several infectious and non-infectious diseases. Although its exact pathogenesis is not yet clear, TTV virus possibly resides and multiplies in bone marrow cells and peripheral blood mononuclear cells (PBMCs). Recently, attempts have been made to eradicate this virus with interferon treatment. More information is still needed to extricate various mysteries related to TTV.
Collapse
Affiliation(s)
- M Irshad
- Clinical Biochemistry Division, Department of Laboratory Medicine, PO Box -4938, A I I M S, New Delhi-110029, India.
| | | | | | | |
Collapse
|
20
|
Abdalla N, . AG, . AF, . KE, . ES, . HG. Transfusion Transmitted Virus (TTV) Infection in Polytransfused Egyptian Thalassemic Children. JOURNAL OF MEDICAL SCIENCES 2006. [DOI: 10.3923/jms.2006.833.837] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|