PMID: 7538549May 1, 1995Paper

Detection of reverse transcriptase by a highly sensitive assay in sera from persons infected with human immunodeficiency virus type 1

The Journal of Infectious Diseases
Walid HeneineT M Folks

Abstract

In an ultrasensitive assay for reverse transcriptase (RT), an in vitro-transcribed heteropolymeric RNA sequence was used as a template and polymerase chain reaction (PCR) amplification with Southern blot hybridization served as a detection system for the cDNA reaction product. The assay, called Amp-RT, detected 9 tested retroviruses in unconcentrated culture supernatants diluted 10(2)- to 10(5)-fold. A comparative analysis using human immunodeficiency virus type 1 (HIV-1) revealed that Amp-RT was 100,000 times more sensitive than the standard RT assay, 10,000 times more sensitive than p24 antigen capture and branched DNA assays, and 100 times more sensitive than RT-PCR or TCID50 assays. Analysis of serum specimens from 42 HIV-1-infected persons by Amp-RT showed that 36 samples (85.7%) were RT-positive. In contrast, 41 serum specimens from persons seronegative for HIV-1 and human T lymphotropic virus types I and II were all Amp-RT-negative.

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