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Screening potential corneal donors for HIV-1 by polymerase chain reaction and a colorimetric microwell hybridization assay.

Abstract：

PURPOSE:Current screening of potential corneal donors for human immunodeficiency virus type 1 (HIV-1) involves serologic detection of antibodies to the virus. However, this approach cannot detect infection during the seronegative window period of the disease. We therefore evaluated the polymerase chain reaction (PCR) assay for viral nucleic acid as a possible alternative to screening cadaveric blood for HIV-1. METHODS:Blood specimens from cadavers diagnosed at autopsy with acquired immunodeficiency syndrome (AIDS) (n = 21), at high risk for HIV-1 infection (n = 47), and at no known risk (n = 350) were screened by PCR for HIV-1 proviral DNA and human leukocyte antigen (HLA)-DQ alpha sequences, and for HIV antibodies. RESULTS:All AIDS group samples were seropositive; of these, 18 (86%) and 20 (95%) of 21 were positive for HIV by PCR of proteinase K- and Chelex-extracted pellets, respectively. The seropositive samples negative by PCR testing were shown to inhibit PCR amplification. Nine (19%) of 47 high-risk specimens were HIV-positive. The no-known-risk group yielded negative results. The overall sensitivities for PCR in the proteinase K- and Chelex-treated groups were 90% and 97%, respectively, compared with Western blot reactivity. If PCR-inhibitory samples and HLA-DQ alpha-negative samples had been eliminated, sensitivity would have been 100%. Specificity was 100% for each group. CONCLUSIONS:Screening cadaveric blood by PCR may be feasible, but further refinement of the assay and blood specimen collection practices will be necessary for it to become routine. Future studies should focus on optimizing specimen procurement and preparation to reduce or eliminate specimens that inhibit PCR.

journal_name

Am J Ophthalmol

journal_title

American journal of ophthalmology

authors

Essary LR,Kinard SJ,Butcher A,Wang H,Laycock KA,Donegan E,McCreedy B,Connell S,Batchelor J,Harris J,Spadoro J,Pepose JS

doi

10.1016/s0002-9394(14)72113-0

subject

Has Abstract

pub_date

1996-10-01 00:00:00

pages

526-34

issue

eissn

0002-9394

issn

1879-1891

pii

S0002-9394(14)72113-0

journal_volume

122

pub_type

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Screening potential corneal donors for HIV-1 by polymerase chain reaction and a colorimetric microwell hybridization assay.