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Presence of Trypanosoma cruzi in pregnant women and typing of lineages in congenital cases.

Abstract：

:The objective of this study was to determine the presence of Trypanosoma cruzi in blood samples of mothers with chronic Chagas disease and their newborn by conventional PCR targeted to minicircle kinetoplastidic DNA (kDNA), and to determine the lineages in mother/newborn pairs of the congenital cases by hybridization assays with probes belonging to the TcII, TcI and TcV Discrete Typing Units (DTU). In 63 (57.2%) of the mothers the presence of circulating T. cruzi was demonstrated by PCR immediately before delivery and in three newborn (3%) congenital transmission was confirmed by serial PCR and conventional serology between 1 and 16 months of life, at which point treatment was started. The hybridization signals showed that two of the newborn had the same DTU as their mother (TcI, TcII and TcV), whilst in the third congenital case only TcV was detected in the cord blood, suggesting that in this infant TcI and TcII did not cross the placenta or the parasite was not present at a detectable level. Levels T. cruzi DNA was determined by TaqMan Probe based Real Time PCR assay targeted to nuclear satellite sequences in these three pairs of samples.

journal_name

Acta Trop

journal_title

Acta tropica

authors

Ortiz S,Zulantay I,Solari A,Bisio M,Schijman A,Carlier Y,Apt W

doi

10.1016/j.actatropica.2012.08.001

subject

Has Abstract

pub_date

2012-12-01 00:00:00

pages

243-6

issue

3

eissn

0001-706X

issn

1873-6254

pii

S0001-706X(12)00273-2

journal_volume

124

pub_type

杂志文章

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