|Frequency and genotypic distribution of GB virus C (GBV-C) among Colombian population with Hepatitis B (HBV) or Hepatitis C (HCV) infection.|
|Jump to Full Text|
|PMID: 21745373 Owner: NLM Status: MEDLINE|
|BACKGROUND: GB virus C (GBV-C) is an enveloped positive-sense ssRNA virus belonging to the Flaviviridae family. Studies on the genetic variability of the GBV-C reveals the existence of six genotypes: genotype 1 predominates in West Africa, genotype 2 in Europe and America, genotype 3 in Asia, genotype 4 in Southwest Asia, genotype 5 in South Africa and genotype 6 in Indonesia. The aim of this study was to determine the frequency and genotypic distribution of GBV-C in the Colombian population.
METHODS: Two groups were analyzed: i) 408 Colombian blood donors infected with HCV (n = 250) and HBV (n = 158) from Bogotá and ii) 99 indigenous people with HBV infection from Leticia, Amazonas. A fragment of 344 bp from the 5' untranslated region (5' UTR) was amplified by nested RT PCR. Viral sequences were genotyped by phylogenetic analysis using reference sequences from each genotype obtained from GenBank (n = 160). Bayesian phylogenetic analyses were conducted using Markov chain Monte Carlo (MCMC) approach to obtain the MCC tree using BEAST v.1.5.3.
RESULTS: Among blood donors, from 158 HBsAg positive samples, eight 5.06% (n = 8) were positive for GBV-C and from 250 anti-HCV positive samples, 3.2%(n = 8) were positive for GBV-C. Also, 7.7% (n = 7) GBV-C positive samples were found among indigenous people from Leticia. A phylogenetic analysis revealed the presence of the following GBV-C genotypes among blood donors: 2a (41.6%), 1 (33.3%), 3 (16.6%) and 2b (8.3%). All genotype 1 sequences were found in co-infection with HBV and 4/5 sequences genotype 2a were found in co-infection with HCV. All sequences from indigenous people from Leticia were classified as genotype 3. The presence of GBV-C infection was not correlated with the sex (p = 0.43), age (p = 0.38) or origin (p = 0.17).
CONCLUSIONS: It was found a high frequency of GBV-C genotype 1 and 2 in blood donors. The presence of genotype 3 in indigenous population was previously reported from Santa Marta region in Colombia and in native people from Venezuela and Bolivia. This fact may be correlated to the ancient movements of Asian people to South America a long time ago.
|Mónica V Alvarado-Mora; Livia Botelho; Anna Nishiya; Raymundo A Neto; Michele S Gomes-Gouvêa; Maria F Gutierrez; Flair J Carrilho; João Rr Pinho|
Related Documents :
|23023103 - Urinary markers of kidney injury and kidney function decline in hiv-infected women.
24470893 - High hiv prevalence and associated factors in a remote community in the rwenzori region...
18720003 - Conjugated linoleic acid-induced toxic hepatitis: first case report.
|Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2011-07-11|
|Title: Virology journal Volume: 8 ISSN: 1743-422X ISO Abbreviation: Virol. J. Publication Date: 2011|
|Created Date: 2011-07-29 Completed Date: 2011-10-19 Revised Date: 2013-06-28|
Medline Journal Info:
|Nlm Unique ID: 101231645 Medline TA: Virol J Country: England|
|Languages: eng Pagination: 345 Citation Subset: IM|
|Laboratory of Gastroenterology and Hepatology, São Paulo Institute of Tropical Medicine and Department of Gastroenterology, School of Medicine, University of São Paulo, Brazil. firstname.lastname@example.org|
|Data Bank Information|
Bank Name/Acc. No.:
|GENBANK/JF832366; JF832367; JF832368; JF832369; JF832370; JF832371; JF832372; JF832373; JF832374; JF832375; JF832376; JF832377; JF832378; JF832379; JF832380; JF832381; JF832382; JF832383|
|APA/MLA Format Download EndNote Download BibTex|
5' Untranslated Regions
Colombia / epidemiology
Flaviviridae Infections / epidemiology*, virology*
GB virus C / classification*, genetics, isolation & purification*
Hepatitis B / complications*
Hepatitis C / complications*
Molecular Sequence Data
RNA, Viral / genetics
Reverse Transcriptase Polymerase Chain Reaction
Sequence Analysis, DNA
|0/5' Untranslated Regions; 0/RNA, Viral|
Journal ID (nlm-ta): Virol J
Publisher: BioMed Central
Copyright ©2011 Alvarado-Mora et al; licensee BioMed Central Ltd.
Received Day: 23 Month: 5 Year: 2011
Accepted Day: 11 Month: 7 Year: 2011
collection publication date: Year: 2011
Electronic publication date: Day: 11 Month: 7 Year: 2011
Volume: 8First Page: 345 Last Page: 345
Publisher Id: 1743-422X-8-345
PubMed Id: 21745373
|Frequency and genotypic distribution of GB virus C (GBV-C) among Colombian population with Hepatitis B (HBV) or Hepatitis C (HCV) infection|
|Mónica V Alvarado-Mora1||Email: email@example.com|
|Livia Botelho1||Email: firstname.lastname@example.org|
|Anna Nishiya2||Email: email@example.com|
|Raymundo A Neto3||Email: firstname.lastname@example.org|
|Michele S Gomes-Gouvêa1||Email: email@example.com|
|Maria F Gutierrez4||Email: firstname.lastname@example.org|
|Flair J Carrilho1||Email: email@example.com|
|João RR Pinho1||Email: firstname.lastname@example.org|
1Laboratory of Gastroenterology and Hepatology, São Paulo Institute of Tropical Medicine and Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, Brazil
2São Paulo Blood Bank, São Paulo, Brazil
3Department of Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
4Laboratory of Virology, Department of Microbiology, Pontificia Javeriana University, Bogotá, Colombia
GB virus C/Hepatitis G virus (GBV-C/HGV) is an enveloped, positive-sense, single-strand RNA virus belonging to the family Flaviviridae with a genomic size of about 9.3 Kb . It is genomic organization mainly consists of a large open reading frame (ORF) that encodes a single polyprotein precursor in which the structural (E1 and E2) and nonstructural proteins (NS2 to NS5B) are positioned at the N-terminal and C-terminal end, respectively . It was first identified in 1995 in serum from individuals with idiopathic hepatitis . Although it was initially identified as a possible etiological agent of viral hepatitis in humans, and despite its similarity in genome structure with hepatitis C virus (HCV), in contrast to HCV, GBV-C does not appear to be a hepatotrophic virus neither replicates in hepatocytes nor causes acute or chronic hepatitis [4-6].
GBV-C can be transmitted parenterally through blood and derivates transfusion, intravenous drug use, hemodialysis and vertical transmission [7-10]. There is extensive evidence that GBV-C is transmitted by sexual and percutaneous routes and is frequently found in populations at risk for blood-borne or sexually transmitted viruses [5,11]. Male to male sex has been reported as an effective way of transmission  and intrafamilial transmission has been determined based on the sequences analysis [13,14]. GBV-C has not been associated with any particular disease despite numerous investigations. Alteration in the host's cellular immune response to HIV seems to be responsible for a protective effect of GBV-C but the exact mechanism to it still have to be defined. In contrast, GBV-C infection does not appear to have any effect on chronic liver disease due to HCV or HBV .
GBV-C infection is relatively common and has a worldwide distribution. At least 1 to 4% of healthy blood donors have GBV-C RNA [1,5,7]. Most people clear the virus and develop antibodies to the E2 envelope glycoprotein. Furthermore, infection is common in the normal population with up to 12.9% prevalence among paid blood donors in the United States of America , 11% to 14% in West Africa or South Africa , and as high as 37% among HIV-infected individuals . GBV-C incidence amongst of patients with HCV infection varies from 11 to 24% [17-19]. Further, little work has been done on coinfection of GBV-C and HBV but no significant effect of this co-infection was reported .
The geographical distribution of GBV-C is related to the coevolution of the viruses with human during the migration along the history, suggesting that GBV-C is an ancient virus [20,21]. Genotype 1 is found in West Africa , genotype 2 (sub-classified as both 2a and 2b) in the United States and Europe , genotype 3 in Asia [24-26], genotype 4 in Myanmar and Vietnam , genotype 5 in South Africa  and genotype 6 in Indonesia . In South America, the genotypes 1, 2a, 2b and 3 have been reported [30-34]. In Colombia, a high prevalence of GBV-C RNA and presence of genotype 3 were found among Colombian native Indians from Wayuu, Kamsa and Inga ethic groups .
The aim of this study was determined the frequency of GBV-C RNA and the GBV-C genotypes circulating in Colombia. This is the first study that characterizes the presence of GBV-C among blood donors in coinfection with HCV and HBV in Colombia.
In order to identified the frequency of GBV-C in Colombia, i) 408 samples from Colombian blood donors positive for anti-HCV (n = 250) and positive for HBsAg (n = 158) using third generation ELISA in the blood bank of Cruz Roja Colombiana in Bogota city, Colombia, and ii) 99 samples from indigenous people with HBV infection from Leticia, Amazonas were obtained for this study. These samples were collected between 2003 and 2007 and the presence of HCV RNA and HBV DNA were previously reported by our group [35,36].
The protocol of this study was approved from Ethical Committees from the Pontificia Universidad Javeriana, Bogotá, Colombia and University of São Paulo Medical School, São Paulo, Brazil. All patients have signed an informed consent before joining the study.
To avoid false-positive results, rigorous procedures used for nucleic acid amplification diagnostic techniques were followed . HCV-RNA extraction was carried out from 140 ml of serum using QIAamp Viral RNA Kit (QIAGEN, Valencia, CA), following the manufacturer's instructions. The synthesis of the complementary DNA (cDNA) was carried out immediately after RNA extraction.
Reverse transcriptase reaction was performed using the Moloney Murine Leukemia Virus Reverse Transcriptase (MMLV-RT) and random primers. The final volume of the reaction was 60 ml in the following concentrations: 50 mM Tris-HCl (pH 8.3), 75 mM KCl, 3 mM MgCl2, 10 mM DTT, 0.5 mM of each dNTP, 450 ng random primers, 30 U RNAse enzyme inhibitor (RNaseOUT™), and 300 U MMLV-RT. Samples were submitted to the following temperature cycles: 70°C for 10 min, 25°C for 15 min, 37°C for 60 min, and 95°C for 15 min in a thermocycler (Eppendorf Mastercycler 1, Eppendorf, Hamburg, Germany).
A fragment of 344 bp from 5' untranslated region (5'UTR) was amplified by nested RT PCR [28,38]. Amplification consisted of 40 cycles for first and second round of PCR, with the following incubation times and temperatures: 94°C 30 s, 50°C 30 s and 72°C 30s for the first round and 94°C 30s, 60°C 30 s and 72°C 30s for the second round.
Amplified cDNA was purified using the ChargeSwitch PCR Clean-Up Kit. Sequencing was done in an ABI Prism 3500 Automatic Sequencer (Applied Biosystems, Foster City, CA) using dideoxy nucleoside triphosphates (ddNTPs) containing fluorescent markers (Big Dye1 Terminator v3.1 Cycle Sequencing Ready Reaction Kit-Applied Biosystems).
The consensus sequences were obtained by alignment of both sequenced strands (sense and antisense) using the SEQUENCHER software (Gene Codes Corporation Ann Arbor, Michigan, United States of America).
The sequences obtained in this work were genotyped by phylogenetic reconstructions using reference sequences from each GBV-C genotype obtained from GenBank (n = 160). Sequences were aligned and edited using Clustal X  and Se-AL (available at: http://tree.bio.ed.ac.uk/software/seal/) softwares respectively. Bayesian phylogenetic analyses were conducted using the Markov Chain Monte Carlo (MCMC) simulation implemented in BEAST v.1.5.3 . The dataset was analyzed under relaxed uncorrelated lognormal and relaxed uncorrelated exponential molecular clock using the best model of nucleotide substitution (GTR+G+I) chosen by MODELTEST  and 20 million generations were sufficient to obtain the convergence of parameters. The molecular clock that best fitted the data was chosen by Bayes factor (BF) comparison. The maximum clade credibility (MCC) tree was obtained from summarizing the 20,000 substitution trees after excluding 10% of burn-in using Tree Annotator v.1.5.3 . Phylogenetic trees were visualized in FigTree v.1.2.2 (available at: http://tree.bio.ed.ac.uk/software/figtree/).
Statistical analyses were performed using Minitab Software v. 15. The χ2 test for linear trend (α = 0.05) was used to examine the variations in the presence of GBV-C RNA adjusted for age group, sex and co-infection group (Anti-HCV or HBsAg).
Among Colombian blood donors, from 158 HBsAg positive samples, 5.06% (n = 8) were positive for GBV-C RNA and from 250 anti-HCV positive samples, 3.2% (n = 8) were positive for GBV-C. Among 99 indigenous people from Leticia (n = 99), 7.7% (n = 7) GBV-C positive samples were found (Table 1).
Eighteen out of 23 sequences with good quality were used for phylogenetic analysis. The phylogenetic tree constructed with the GBV-C sequences (n = 160) is shown in Figure 1. This analysis revealed the presence of the following GBV-C genotypes among blood donors: 2a (41.6%), 1 (33.3%), 3 (16.6%) and 2b (8.3%). All genotype 1 sequences were found in co-infection with HBV and 4/5 sequences genotype 2a were found in co-infection with HCV. All sequences from indigenous people from Leticia were classified as genotype 3. The presence of GBV-C infection among blood donors group and indigenous people was not correlated with sex (p = 0.43), age (p = 0.38) or origin of the samples (p = 0.17). The Colombian GBV-C sequences were deposited in the GenBank database under accession numbers JF832366 to JF832383.
In this study, we determined the frequency and genotypic characteristics of GBV-C virus in Colombia. Among Colombian blood donors, from 158 HBsAg positive samples, eight (5.06%) were positive for GBV-C and from 250 anti-HCV positive samples, eight (3.2%) were positive for GBV-C. This is the first report showing the frequency of GBV-C in HBV and HCV positive blood donors in Colombia.
There are few studies that reported GBV-C frequency in blood donors populations. In Salvador and in Rio de Janeiro, Brazil it was reported 10% of frequency of GBV-C among blood donors [42,43]. Also, in São Paulo, Brazil it was reported a high prevalence among blood donors with normal and elevated ALT levels: 5.2% (5/95) and 6.5% (5/76), respectively . Furthermore, the prevalence of GBV-C was 9.7% among 545 blood donors in São Paulo  and 8.3% in 1.039 healthy individuals .
In Iranian volunteer blood donors the prevalence of GBV-C was around 1% . A study of prevalence of GBV-C among northeastern Thai blood donors carrying HBsAg and anti-HCV revealed a higher frequency of GBV-C RNA (10% and 11%, respectively) in the co-infected when compared with the controls . In United States, GBV-C prevalence in blood donors was reported ranging from 0.8% to 12.9% [48,49]. In Turkey the prevalence of GBV-C was 14% in hemodialysis patients and 5% in blood donors . Also, in Thailand the GBV-C RNA positivity among blood donors was 4.8% . In France, among 306 HCV RNA-positive donors, 19.3% were GBV-C RNA positive . In Egypt, El-Zayadi et al.,  found 12.2% of GBV-C prevalence among blood donors and GBV-C coinfection in HBV and HCV infected patients were 7.6 and 64.9%, respectively. GBV-C infection is generally more common in groups with risk factors for percutaneous and sexual transmission of infectious agents .
The presence of GBV-C infection in our study was not correlated with sex (p = 0.43), age (p = 0.38) or origin (p = 0.17). These results are correlated with the previous study performed among three different Indian groups from Colombia (Wayuu, Inga and Kamsa) where no significant differences were found .
A phylogenetic analysis revealed the presence of GBV-C genotypes 2a, 1, 3 and 2b among Colombian blood donors. There are few studies that reported GBV-C genotypes among blood donor populations in the world. In Bolivia, among blood donors, it was found that the major genotype was genotype 3 followed by genotype 2 . In Shanghai, China, genotype 3 was the most prevalent . In Martinique, Césaire et al., , reported genotypes 2a, 1 and 2b among blood donors.
Furthermore, all genotype 1 sequences from Colombian blood donors were found in co-infection with HBV and 4/5 sequences from blood donors genotype 2a were found in co-infection with HCV, it was not found a significant association between the presence of HBV or HCV co-infection and GBV-C genotype (p = 0.431). These results are similar to other studies where no significant differences of HBV, HCV and GBV-C infection rates were found .
Phylogenetic analysis showed that genotype 3 is the most common in Leticia, Amazon region of Colombia. The finding of an Asian GBV-C genotype in the Americas was first suggested by the analysis of 5'UTR hemophiliac patients from nine locations in Nicaragua , Colombian Amerindians  and Bolivia . Similarity between Nicaraguan and Asian GBV-C genotype 3 strains indicates that these strains in the region presumably have an Amerindian origin .
In Colombia, from 163 native Indians, 6.1% (n = 10) were positive for GBV-C RNA and it was concluded that the incidence of GBV-C infection in native Indians tended to be high compared with the general population . Furthermore, most Colombian native Indians harbored an Asian GBV-C genotype.
In an Amerindian population from Venezuela, a high prevalence of GBV-C genotype 3 was observed, ranging from 5% (9 out of 162) in the West to 25% (14 out of 56) in the south region of the country . Whereas GBV-C genotypes 1, 2 and 3 were presented in Venezuela, genotype 3 (Asian genotype) was found infecting Amerindians and rural population .
Together with other studies, our results corroborate the hypothesis that GBV-C is an old virus , having been probably introduced in the America continent with the fist men coming thought the Bering Strait [32-34,58]. It is generally believed that Colombian native Indians migrated from Asia to Colombia approximately 12,000 years ago and were isolated from other people for religious reasons . On the other hand, since HTLV-1 or HTLV-2 may have been brought from Asia to Colombia together with the first human migrants , GBV-C/HGV apparently followed the same route . These results are correlated with the evolutionary analysis of GBV-C performed by Suzuki et al., , that assumed that this virus diverged 100.000 years ago. However, further analysis needs to be performer to test this hypothesis. Actually, more sequences of GBV-C genotype 3 need to be reported with sampling date, allowing to estimate a specific substitution rate for this genotype that is needed for a more detailed phylogeographic analysis.
In conclusion, this is the first study that reported the GBV-C frequency and the distribution of genotypes among Colombian blood donors. The result presented indicated the circulation of the genotype 3 among Amerindian population in Colombia and blood donors.
The authors declare that they have no competing interests.
MVAM conducted the phylogenetic and evolutionary analysis, drafted the manuscript and participated in its design and coordination. LB, AN and MSGG participated in the PCR amplification and sequencing process. RAN conducts the statistical analysis. FJC and MFG participated in the design of the study. JRRP participated in the elaboration of the manuscript. All authors read and approved the final manuscript.
This work has been supported by CNPq, Fundação de Amparo à Pesquisa do Estado de São Paulo-FAPESP 2007/53457-7 and 2008/50461-6 and Pontificia Universidad Javeriana, Bogotá, Colombia. We thank Banco Nacional de Sangre de la Cruz Roja Colombiana for their kind provision of blood donor samples for this study.
|Stapleton JT,Foung S,Muerhoff AS,Bukh J,Simmonds P,The GB viruses: a review and proposed classification of GBV-A, GBV-C (HGV), and GBV-D in genus Pegivirus within the family FlaviviridaeJ Gen VirolYear: 20119223324610.1099/vir.0.027490-021084497|
|Leary TP,Muerhoff AS,Simons JN,Pilot-Matias TJ,Erker JC,Chalmers ML,Schlauder GG,Dawson GJ,Desai SM,Mushahwar IK,Sequence and genomic organization of GBV-C: a novel member of the flaviviridae associated with human non-A-E hepatitisJ Med VirolYear: 199648606710.1002/(SICI)1096-9071(199601)48:1<60::AID-JMV10>3.0.CO;2-A8825712|
|Simons JN,Leary TP,Dawson GJ,Pilot-Matias TJ,Muerhoff AS,Schlauder GG,Desai SM,Mushahwar IK,Isolation of novel virus-like sequences associated with human hepatitisNat MedYear: 1995156456910.1038/nm0695-5647585124|
|Laskus T,Radkowski M,Wang LF,Vargas H,Rakela J,Lack of evidence for hepatitis G virus replication in the livers of patients coinfected with hepatitis C and G virusesJ VirolYear: 199771780478069311866|
|Alter HJ,G-pers creepers, where'd you get those papers? A reassessment of the literature on the hepatitis G virusTransfusionYear: 19973756957210.1046/j.1537-2995.1997.37697335149.x9191815|
|Zhu WF,Yin LM,Li P,Huang J,Zhuang H,Pathogenicity of GB virus C on virus hepatitis and hemodialysis patientsWorld J GastroenterolYear: 200391739174212918111|
|Moaven LD,Hyland CA,Young IF,Bowden DS,McCaw R,Mison L,Locarnini SA,Prevalence of hepatitis G virus in Queensland blood donorsMed J AustYear: 19961653693718890843|
|Casteling A,Song E,Sim J,Blaauw D,Heyns A,Schweizer R,Margolius L,Kuun E,Field S,Schoub B,Vardas E,GB virus C prevalence in blood donors and high risk groups for parenterally transmitted agents from Gauteng, South AfricaJ Med VirolYear: 19985510310810.1002/(SICI)1096-9071(199806)55:2<103::AID-JMV4>3.0.CO;2-69598929|
|Thomas DL,Nakatsuji Y,Shih JW,Alter HJ,Nelson KE,Astemborski JA,Lyles CM,Vlahov D,Persistence and clinical significance of hepatitis G virus infections in injecting drug usersJ Infect DisYear: 199717658659210.1086/5140789291303|
|Feucht HH,Zollner B,Polywka S,Laufs R,Vertical transmission of hepatitis GLancetYear: 19963476156168596338|
|Bjorkman P,Naucler A,Winqvist N,Mushahwar I,Widell A,A case-control study of transmission routes for GB virus C/hepatitis G virus in Swedish blood donors lacking markers for hepatitis C virus infectionVox SangYear: 20018114815310.1046/j.1423-0410.2001.00098.x11703856|
|Berzsenyi MD,Bowden DS,Roberts SK,GB virus C: insights into co-infectionJ Clin VirolYear: 20053325726610.1016/j.jcv.2005.04.00215922655|
|Seifried C,Weber M,Bialleck H,Seifried E,Schrezenmeier H,Roth WK,High prevalence of GBV-C/HGV among relatives of GBV-C/HGV-positive blood donors in blood recipients and in patients with aplastic anemiaTransfusionYear: 20044426827410.1111/j.1537-2995.2004.00665.x14962319|
|Pinho JR,Zanotto PM,Ferreira JL,Sumita LM,Carrilho FJ,da Silva LC,Capacci ML,Silva AO,Guz B,Goncales FL Jr,Goncales N,Buck G,Meyers G,Bernardini P,High prevalence of GB virus C in Brazil and molecular evidence for intrafamilial transmissionJ Clin MicrobiolYear: 1999371634163710203545|
|Dawson GJ,Schlauder GG,Pilot-Matias TJ,Thiele D,Leary TP,Murphy P,Rosenblatt JE,Simons JN,Martinson FE,Gutierrez RA,Lentino JR,Pachucki C,Muerhoff AS,Widell A,Tegtmeier G,Desai S,Mushahwar IK,Prevalence studies of GB virus-C infection using reverse transcriptase-polymerase chain reactionJ Med VirolYear: 1996509710310.1002/(SICI)1096-9071(199609)50:1<97::AID-JMV16>3.0.CO;2-V8890047|
|Tillmann HL,Manns MP,GB virus-C infection in patients infected with the human immunodeficiency virusAntiviral ResYear: 200152839010.1016/S0166-3542(01)00172-311672817|
|Di Bisceglie AM,Hepatitis G virus infection: a work in progressAnn Intern MedYear: 19961257727738929013|
|Tanaka E,Alter HJ,Nakatsuji Y,Shih JW,Kim JP,Matsumoto A,Kobayashi M,Kiyosawa K,Effect of hepatitis G virus infection on chronic hepatitis CAnn Intern MedYear: 19961257407438929008|
|Feucht HH,Zollner B,Polywka S,Knodler B,Schroter M,Nolte H,Laufs R,Prevalence of hepatitis G viremia among healthy subjects, individuals with liver disease, and persons at risk for parenteral transmissionJ Clin MicrobiolYear: 1997357677689041431|
|Naito H,Abe K,Genotyping system of GBV-C/HGV type 1 to type 4 by the polymerase chain reaction using type-specific primers and geographical distribution of viral genotypesJ Virol MethodsYear: 2001913910.1016/S0166-0934(00)00207-X11164480|
|Smith DB,Cuceanu N,Davidson F,Jarvis LM,Mokili JL,Hamid S,Ludlam CA,Simmonds P,Discrimination of hepatitis G virus/GBV-C geographical variants by analysis of the 5' non-coding regionJ Gen VirolYear: 199778Pt 7153315429225026|
|Muerhoff AS,Simons JN,Leary TP,Erker JC,Chalmers ML,Pilot-Matias TJ,Dawson GJ,Desai SM,Mushahwar IK,Sequence heterogeneity within the 5'-terminal region of the hepatitis GB virus C genome and evidence for genotypesJ HepatolYear: 19962537938410.1016/S0168-8278(96)80125-58895018|
|Muerhoff AS,Smith DB,Leary TP,Erker JC,Desai SM,Mushahwar IK,Identification of GB virus C variants by phylogenetic analysis of 5'-untranslated and coding region sequencesJ VirolYear: 199771650165089261369|
|Okamoto H,Nakao H,Inoue T,Fukuda M,Kishimoto J,Iizuka H,Tsuda F,Miyakawa Y,Mayumi M,The entire nucleotide sequences of two GB virus C/hepatitis G virus isolates of distinct genotypes from JapanJ Gen VirolYear: 199778Pt 47377459129645|
|Mukaide M,Mizokami M,Orito E,Ohba K,Nakano T,Ueda R,Hikiji K,Iino S,Shapiro S,Lahat N,Park YM,Kim BS,Oyunsuren T,Rezieg M,Al-Ahdal MN,Lau JY,Three different GB virus C/hepatitis G virus genotypes. Phylogenetic analysis and a genotyping assay based on restriction fragment length polymorphismFEBS LettYear: 1997407515810.1016/S0014-5793(97)00136-19141480|
|Katayama K,Kageyama T,Fukushi S,Hoshino FB,Kurihara C,Ishiyama N,Okamura H,Oya A,Full-length GBV-C/HGV genomes from nine Japanese isolates: characterization by comparative analysesArch VirolYear: 19981431063107510.1007/s0070500503569687865|
|Naito H,Win KM,Abe K,Identification of a novel genotype of hepatitis G virus in Southeast AsiaJ Clin MicrobiolYear: 1999371217122010074558|
|Tucker TJ,Smuts H,Eickhaus P,Robson SC,Kirsch RE,Molecular characterization of the 5' non-coding region of South African GBV-C/HGV isolates: major deletion and evidence for a fourth genotypeJ Med VirolYear: 199959525910.1002/(SICI)1096-9071(199909)59:1<52::AID-JMV9>3.0.CO;2-D10440808|
|Muerhoff AS,Dawson GJ,Desai SM,A previously unrecognized sixth genotype of GB virus C revealed by analysis of 5'-untranslated region sequencesJ Med VirolYear: 20067810511110.1002/jmv.2051016299729|
|Oubina JR,Mathet V,Feld M,Della Latta MP,Ferrario D,Verdun R,Libonatti O,Fernandez J,Carballal G,Sanchez DO,Quarleri JF,Genetic diversity of GBV-C/HGV strains among HIV infected-IVDU and blood donors from Buenos Aires, ArgentinaVirus ResYear: 19996512112910.1016/S0168-1702(99)00109-410581385|
|Ramos Filho R,Carneiro MA,Teles SA,Dias MA,Cardoso DD,Lampe E,Yoshida CF,Martins RM,GB virus C/hepatitis G virus infection in dialysis patients and kidney transplant recipients in Central BrazilMem Inst Oswaldo CruzYear: 20049963964310.1590/S0074-0276200400060001915558178|
|Konomi N,Miyoshi C,La Fuente Zerain C,Li TC,Arakawa Y,Abe K,Epidemiology of hepatitis B, C, E, and G virus infections and molecular analysis of hepatitis G virus isolates in BoliviaJ Clin MicrobiolYear: 1999373291329510488194|
|Loureiro CL,Alonso R,Pacheco BA,Uzcategui MG,Villegas L,Leon G,De Saez A,Liprandi F,Lopez JL,Pujol FH,High prevalence of GB virus C/hepatitis G virus genotype 3 among autochthonous Venezuelan populationsJ Med VirolYear: 20026835736210.1002/jmv.1021112226822|
|Tanaka Y,Mizokami M,Orito E,Ohba K,Nakano T,Kato T,Kondo Y,Ding X,Ueda R,Sonoda S,Tajima K,Miura T,Hayami M,GB virus C/hepatitis G virus infection among Colombian native IndiansAm J Trop Med HygYear: 1998594624679749645|
|Mora MV,Romano CM,Gomes-Gouvea MS,Gutierrez MF,Carrilho FJ,Pinho JR,Molecular characterization, distribution, and dynamics of hepatitis C virus genotypes in blood donors in ColombiaJ Med VirolYear: 2010821889189810.1002/jmv.2190820872715|
|Alvarado Mora MV,Romano CM,Gomes-Gouvea MS,Gutierrez MF,Botelho L,Carrilho FJ,Pinho JR,Molecular characterization of the Hepatitis B virus genotypes in Colombia: a Bayesian inference on the genotype FInfect Genet EvolYear: 20111110310810.1016/j.meegid.2010.10.00320951841|
|Kwok S,Higuchi R,Avoiding false positives with PCRNatureYear: 198933923723810.1038/339237a02716852|
|Jarvis LM,Davidson F,Hanley JP,Yap PL,Ludlam CA,Simmonds P,Infection with hepatitis G virus among recipients of plasma productsLancetYear: 19963481352135510.1016/S0140-6736(96)04041-X8918279|
|Thompson JD,Gibson TJ,Plewniak F,Jeanmougin F,Higgins DG,The CLUSTAL_X windows interface: flexible strategies for multiple sequence alignment aided by quality analysis toolsNucleic Acids ResYear: 1997254876488210.1093/nar/25.24.48769396791|
|Drummond AJ,Rambaut A,BEAST: Bayesian evolutionary analysis by sampling treesBMC Evol BiolYear: 2007721410.1186/1471-2148-7-21417996036|
|Posada D,Crandall KA,MODELTEST: testing the model of DNA substitutionBioinformaticsYear: 19981481781810.1093/bioinformatics/14.9.8179918953|
|Lyra AC,Pinho JR,Silva LK,Sousa L,Saraceni CP,Braga EL,Pereira JE,Zarife MA,Reis MG,Lyra LG,Silva LC,Carrilho FJ,HEV, TTV and GBV-C/HGV markers in patients with acute viral hepatitisBraz J Med Biol ResYear: 20053876777515917959|
|Lampe E,de Oliveira JM,Pereira JL,Saback FL,Yoshida CF,Niel C,Hepatitis G virus (GBV-C) infection among Brazilian patients with chronic liver disease and blood donorsClin Diagn VirolYear: 199891710.1016/S0928-0197(97)10017-49562852|
|Levi JE,Contri DG,Lima LP,Takaoka DT,Garrini RH,Santos W,Fachini R,Wendel S,High prevalence of GB virus C/hepatitis G virus RNA among Brazilian blood donorsRev Inst Med Trop Sao PauloYear: 200345757810.1590/S0036-4665200300020000412754571|
|Ribeiro-dos-Santos G,Nishiya AS,Nascimento CM,Bassit L,Chamone DF,Focaccia R,Eluf-Neto J,Sabino EC,Prevalence of GB virus C (hepatitis G virus) and risk factors for infection in Sao Paulo, BrazilEur J Clin Microbiol Infect DisYear: 20022143844310.1007/s10096-002-0752-y12111599|
|Ramezani A,Gachkar L,Eslamifar A,Khoshbaten M,Jalilvand S,Adibi L,Salimi V,Hamkar R,Detection of hepatitis G virus envelope protein E2 antibody in blood donorsInt J Infect DisYear: 200812576110.1016/j.ijid.2007.04.01017629534|
|Barusruk S,Urwijitaroon Y,High prevalence of HGV coinfection with HBV or HCV among northeastern Thai blood donorsSoutheast Asian J Trop Med Public HealthYear: 20063728929317124988|
|Dawson GJ,Schlauder GG,Pilot-Matias TJ,Thiele D,Leary TP,Murphy P,Rosenblatt JE,Simons JN,Martinson FE,Gutierrez RA,Lentina JR,Pachucki C,Muerhoff AS,Widell A,Tegtmeier G,Desai S,Mushahwar IK,Prevalence studies of GB virus-C infection using reverse transcriptase-polymerase chain reactionJ Med VirolYear: 1996509710310.1002/(SICI)1096-9071(199609)50:1<97::AID-JMV16>3.0.CO;2-V8890047|
|Linnen J,Wages J Jr,Zhang-Keck ZY,Fry KE,Krawczynski KZ,Alter H,Koonin E,Gallagher M,Alter M,Hadziyannis S,Karayiannis P,Fung K,Nakatsuji Y,Shih WK,Young L,Piatak M Jr,Hoover C,Fernandez J,Chen S,Chao-Zou JC,Morris T,Hyams K,Ismay S,Lifson J,Hess G,Foung S,Thomas H,Bradley D,Margolis H,Kim J,Molecular cloning and disease association of hepatitis G virus: a transfusion-transmissible agentScienceYear: 199627150550810.1126/science.271.5248.5058560265|
|Hanci SY,Cevahir N,Kaleli I,Hanci V,Investigation of hepatitis G virus prevalence in hemodialysis patients and blood donors in Denizli, TurkeyMikrobiyol BulYear: 20084261762519149083|
|Wiwanitkit V,Hepatitis G, hepatitis SEN, hepatitis TT and hepatitis TT-like viruses: New emerging hepatitis viruses in pediatric patientsJ Ped Infec DisYear: 200618388|
|Bouchardeau F,Laperche S,Pillonel J,Elghouzzi MH,Maisonneuve P,Tirtaine C,Boiret E,Razer A,Girault A,Beaulieu MJ,Courouce AM,GB virus type C/HGV markers in HCV RNA-positive French blood donors: correlation with HCV genotypes and risk factorsTransfusionYear: 20004087587810.1046/j.1537-2995.2000.40070875.x10924619|
|El-Zayadi AR,Abe K,Selim O,Naito H,Hess G,Ahdy A,Prevalence of GBV-C/hepatitis G virus viraemia among blood donors, health care personnel, chronic non-B non-C hepatitis, chronic hepatitis C and hemodialysis patients in EgyptJ Virol MethodsYear: 199980535810.1016/S0166-0934(99)00036-110403676|
|Giret MT,Miraglia JL,Sucupira MC,Nishiya A,Levi JE,Diaz RS,Sabino EC,Kallas EG,Prevalence, Incidence Density, and Genotype Distribution of GB Virus C Infection in a Cohort of Recently HIV-1-Infected Subjects in Sao Paulo, BrazilPLoS OneYear: 20116e1840710.1371/journal.pone.001840721483671|
|Ding X,Mizokami M,Kang LY,Cao K,Orito E,Tanaka Y,Ueda R,Sasaki M,Prevalence of TT virus and GBV-C infections among patients with liver diseases and the general population in Shanghai, ChinaVirus GenesYear: 199919515810.1023/A:100818862306210499450|
|Cesaire R,Martial J,Maier H,Kerob-Bauchet B,Bera O,Duchaud E,Brebion A,Pierre-Louis S,Infection with GB virus C/hepatitis G virus among blood donors and hemophiliacs in Martinique, a Caribbean islandJ Med VirolYear: 19995916016310.1002/(SICI)1096-9071(199910)59:2<160::AID-JMV6>3.0.CO;2-Y10459150|
|Ling BH,Zhuang H,Cui YH,An WF,Li ZJ,Wang SP,Zhu WF,A cross-sectional study on HGV infection in a rural populationWorld J GastroenterolYear: 1998448949211819351|
|Gonzalez-Perez MA,Norder H,Bergstrom A,Lopez E,Visona KA,Magnius LO,High prevalence of GB virus C strains genetically related to strains with Asian origin in Nicaraguan hemophiliacsJ Med VirolYear: 19975214915510.1002/(SICI)1096-9071(199706)52:2<149::AID-JMV5>3.0.CO;2-39179760|
|Cavalli-Sforza LL,Genes, people and languagesSci AmYear: 19912657278|
|Zaninovic V,Sanzon F,Lopez F,Velandia G,Blank A,Blank M,Fujiyama C,Yashiki S,Matsumoto D,Katahira Y,Geographic independence of HTLV-I and HTLV-II foci in the Andes highland, the Atlantic coast, and the Orinoco of ColombiaAIDS Res Hum RetrovirusesYear: 1994109710110.1089/aid.1994.10.978179968|
|Suzuki Y,Katayama K,Fukushi S,Kageyama T,Oya A,Okamura H,Tanaka Y,Mizokami M,Gojobori T,Slow evolutionary rate of GB virus C/hepatitis G virusJ Mol EvolYear: 19994838338910.1007/PL0000648210079276|
Geographical origins and epidemiological data from 23 Colombian GBV-C infected patients
|1075||Bogotá||Blood donor||M||41||Positive||Negative||No sequence|
|1174||Bogotá||Blood donor||F||23||Positive||Negative||No sequence|
|2244||Bogotá||Blood donor||F||33||Negative||Positive||No sequence|
|2259||Bogotá||Blood donor||M||23||Negative||Positive||No sequence|
|95||Leticia||Native Ticuna||F||54||Positive||Negative||No sequence|
Previous Document: Calcium/calmodulin kinase1 and its relation to thermotolerance and HSP90 in Sporothrix schenckii: an...
Next Document: Comparison of intravenous immunoglobulin and plasma exchange in treatment of mechanically ventilated...