Elsevier

Research in Virology

Volume 146, Issue 2, November–December 1995, Pages 151-158

A simplified method for quantitation of human immunodeficiency virus type l (HIV1) RNA in plasma: clinical correlatesMéthode simple de dosage de l'ARN plasmatique du VIH1 et correspondances cliniques

https://doi.org/10.1016/0923-2516(96)81084-3Get rights and content

Summary

Human immunodeficiency virus type 1 (HIV1) RNA was quantitated in the plasma of HIV1 -seropositive patients using a simplified guanidinium-based extraction technique, reverse transcriptase (RT) and the polymerase chain reaction (PCR). Plasma samples were obtained from 15 HIV1 -seronegative individuals and 38 HIV1-seropositive patients. Following the extraction of RNA from plasma using “RNAzol”, HIV1 RNA was reverse-transcribed using random hexamers, amplified by PCR and then detected by solution oligonucleotide hybridization. Of the 15 HIV1-seronegative individuals, 14 were negative for HIV1 RNA by RT-PCR. One high-risk patient who was HTLV-I-seropositive but HIV1 -seronegative was found to be positive for HIV1 RNA by RT-PCR. All 38 HIV1-sero-positive patients were positive for HIV1 RNA by this technique. The HIV1 RNA levels in plasma varied from 800 to 500,000 copies/ml. Patients with advanced clinical disease tended to have HIV1 RNA levels above 25,000 copies/ml. In patients studied serially, an increase in plasma HIV1 RNA correlated with a progressive decline in CD4+ T cells and a deteriorating clinical course. The simplified quantitative RT-PCR assay for HIV1 RNA provides a useful tool for the evaluation and management of HIV disease.

Une méthode utilisant une technique d'extraction (guanidinium) simplifiée pour la PCR et la RT (transcriptase réverse) a permis de quantifier l'ARN du virus de l'immunodéficience humaine de type 1 ou HIV1 dans le plasma de 15 sujets séronégatifs et dans 38 cas séropositifs qui se sont avérés positifs pour cette recherche de l'ARN par la RT-PCR, à des taux allant de 800 à 500.000 copies/ml, ces taux se situant autour de 25.000/ml chez les malades en phase clinique évolutive. Un accroissement de l'ARN correspond à un déclin numérique des lymphocytes CD4+ et à une aggravation clinique. Sur les 15 sujets séronégatifs, 14 se sont avérés négatifs pour la recherche d'ARN par la RT-PCR. Un sujet à risques, séropositif pour le HTLV-I et séronégatif pour le VIH1 (HIV1) s'est montré positif pour l'ARN viral déterminé par la RT-PCR. Cette méthode quantitative et simple est effectivement un outil appréciable dans l'analyse bio-clinique des effets du VIH.

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