Abstract:
BACKGROUND:Torque teno virus is a small chronically persisting circular negative ssDNA virus reaching near 100% prevalence. It is reported to be a marker for immune function in immunocompromised patients. The possibility of vertical maternal-fetal transmission remains controversial but incidence rate of TTV DNA in children increased with age. TTV dynamics well studied for allogeneic hematopoietic stem cell transplantation as a predictor of post-transplant complications but there is no viral proliferation kinetics data for other patient groups or healthy individuals. The aim of this study was to determine TTV dynamics during the first year of life of healthy infants. METHODS:Ninety eight clinically healthy breastfeeding infants (1-12 months of age) were analyzed by quantitative PCR for the whole blood TTV load with the test sensitivity of about 1000 viral copies per milliliter of blood (total number of samples including repeatedly tested infants was 109). RESULTS:67% of all analyzed samples were TTV-positive demonstrating significant positive correlation between age and TTV load (r = 0.81, p < 0.01). CONCLUSIONS:This is the first study to suggest that viral load increases during the first year of life reaching a plateau after 6 months with strong proliferation for the first 60 days. Our data well correlates with TTV dynamics in patients following allogeneic hematopoietic stem cell transplantation.
journal_name
Virol Jjournal_title
Virology journalauthors
Tyschik EA,Rasskazova AS,Degtyareva AV,Rebrikov DV,Sukhikh GTdoi
10.1186/s12985-018-1007-6subject
Has Abstractpub_date
2018-05-30 00:00:00pages
96issue
1issn
1743-422Xpii
10.1186/s12985-018-1007-6journal_volume
15pub_type
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