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Journal of Clinical Microbiology, Nov 1995, 2881-2887, Vol 33, No. 11
TJ Bosma, KM Corbett, MB Eckstein, S O'Shea, P Vijayalakshmi, JE Banatvala, K Morton and JM Best
A reverse transcription-nested PCR assay (RT-PCR) was evaluated for
diagnosis of congenitally acquired rubella in utero and during infancy.
RT-PCR was compared with virus isolation for retrospective detection of
rubella virus in placental and fetal tissues obtained after termination of
pregnancy following primary rubella or rubella virus reinfection.
Concordant results were obtained for 85% of samples; rubella virus RNA was
detected by RT-PCR alone in four samples, and rubella virus was detected by
isolation alone in two samples. Samples were also obtained for prenatal
diagnosis of congenital infection; rubella virus RNA was detected in three
of seven chorionic villus samples and one of three amniotic fluid samples
by RT-PCR, while rubella virus was isolated in only one chorionic villus
sample. To demonstrate that the RNA extracted from chorionic villus samples
contained amplifiable RNA, a nested RT- PCR was used to detect keratin
mRNA. Rubella virus was detected in placenta in two cases in which the
fetus was uninfected, and there was no evidence of rubella virus in the
placenta from one case in which the fetus was infected. Thus, detection of
rubella virus in chorionic villus samples by RT-PCR may not always
correctly predict fetal rubella virus infection. RT-PCR was successfully
used for the diagnosis of congenitally acquired rubella in infancy. Rubella
virus RNA was detected in cyropreserved or formalin-fixed lens aspirates
obtained from infants in India with serologically confirmed congenital
rubella but not in samples from controls with inherited cataract.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Use of PCR for prenatal and postnatal diagnosis of congenital rubella
Department of Virology, United Medical School, Guys Hospital, London, United Kingdom.
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