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TT virus is distributed in various leukocyte subpopulations at distinct levels, with the highest viral load in granulocytes.

Abstract：

:When TT virus (TTV) DNA was quantitated in whole blood and plasma aliquots from 27 viremic individuals by real-time detection PCR that can detect essentially all TTV genotypes, the TTV load was 6.9 +/- 3.5 (mean +/- standard deviation)-fold higher in the whole blood than in the plasma samples [P < 0.002 (paired t test)]. To clarify the reason for this difference, peripheral blood cells of various types including red blood cells, granulocytes (CD15+), B cells (CD19+), T cells (CD3+), monocytes (CD14+), and NK cells (CD3-/CD56+) were separated at a purity of 95.4-99.5% from each of three infected individuals with relatively high TTV viremia, and their TTV viral loads were determined. Red blood cells were uniformly negative, but the other cell types were positive for TTV DNA at various titers. In all three patients, the highest TTV load was found in granulocytes (4.2 x 10(4)-3.1 x 10(5) copies/10(6) cells), followed by monocytes (1.4-2.2 x 10(4) copies/10(6) cells) and NK cells (5.4-6.5 x 10(3) copies/10(6) cells); B and T cells were positive, with a low viral load (6.7 x 10(1)-2.7 x 10(3) copies/10(6) cells). These results indicate that TTV is distributed in various peripheral blood cell types at distinct levels, with the highest viral load in granulocytes, and that a significant proportion of the TTV DNA in peripheral blood is not identified by the standard plasma/serum DNA detection methods.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Takahashi M,Asabe S,Gotanda Y,Kishimoto J,Tsuda F,Okamoto H

doi

10.1006/bbrc.2001.6183

subject

Has Abstract

pub_date

2002-01-11 00:00:00

pages

242-8

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006291X01961832

journal_volume

290

pub_type

杂志文章

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