| TT virus prevalence, viral loads and genotypic variability in saliva from healthy Japanese children. | |
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MedLine Citation:
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PMID: 18671690 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Masako Naganuma; Norio Tominaga; Tsunetake Miyamura; Atsushi Soda; Masako Moriuchi; Hiroyuki Moriuchi |
Publication Detail:
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Type: Comparative Study; Journal Article Date: 2008-07-30 |
Journal Detail:
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Title: Acta paediatrica (Oslo, Norway : 1992) Volume: 97 ISSN: 1651-2227 ISO Abbreviation: Acta Paediatr. Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2008-11-26 Completed Date: 2009-02-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9205968 Medline TA: Acta Paediatr Country: Norway |
Other Details:
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Languages: eng Pagination: 1686-90 Citation Subset: IM |
Affiliation:
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Department of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. macha.naganuma@nifty.ne.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Age Factors Child, Preschool DNA Virus Infections / blood, epidemiology, genetics, virology* Female Genetic Variation Genotype Humans Infant Japan Male Middle Aged Prevalence Saliva / virology* Torque teno virus / genetics, isolation & purification* Viral Load |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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