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M94A3268.TXT
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1994-10-25
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Document 3268
DOCN M94A3268
TI AIDS in HIV1/HIV2 seronegative patient in Yaounde-Cameroon.
DT 9412
AU Zekeng L; Afane ZE; Gurtler L; Ondoa P; Knapp S; Eberle J; Kaptue L;
Laboratoire d'hematologie, CHU Younde Cameroun.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):115 (abstract no. PA0079). Unique
Identifier : AIDSLINE ICA10/94369307
AB OBJECTIVE: To describe a case of HIV infection in a Cameroonian patient
antibody negative using commercial available EIA and rapidassays.
METHODS: Miss A., 24 years old was hospitalized for poor general state,
productive cough, persistant diarrhoea and oral candidiasis. A chest
Xray and sputum examination confirmed a pulmonary tuberculosis (TB)
which was treated with Rifamycine, INH, Ethambutol and Pyrazinamide.
HIV1+2 serology was requested twice at 3 weeks interval using commercial
EIA assays (Genclaviamixte HIV1 + 2 Pasteur, Wellcozyme HIV1 + 2 Murex,
Enzygnost anti HIV1/HIV2 Behring) and rapid assays (HIVSPOTHIV1 +
2DBL,SUDSHIV1 + 2 Murex). During a third request 3 weeks after, we
include an EIA HIV1 subtype Oasay (Enzygnost 5180 Behring) which was
developped using a strain isolated from a Cameroonian AIDS patient in
1991. Blood was also drawn for PCR and virus isolation from PBMCs.
RESULTS: The HIV1 + 2 serology remained negative or at most very
borderline for the 3 trials using commercial assays mentionned above.
When using the 5180 EIA, the OD was 1.4 with a cut off of 0.267. The
HIV1 western blot showed p24 and p55 bands with a faint gp41, and
specific HIV2 EIA also remained negative. The PCR was faintly positive
using 5180 ENV primer and negative using ENV conventional HIV1 primers.
The virus was isolated from PBMC after 14 days culture. p24-antigen and
reverse transcriptase tests were strongly positive. The characterization
of the genome is going on. CONCLUSION: Isolating HIV from a negative
patient using commercial available assays shows their limit in detecting
HIV antibodies to HIV1 subtype 0 and other divergent strains. The
magnitude of such an issue in Cameroon and neigbouring countries needs
to be addressed urgently.
DE Acquired Immunodeficiency Syndrome/*IMMUNOLOGY/MICROBIOLOGY Adult
Cameroon Case Report DNA Primers/GENETICS Female Genes, env Human
HIV Antibodies/BLOOD HIV Antigens/BLOOD HIV Seronegativity/*IMMUNOLOGY
HIV-1/GENETICS/*IMMUNOLOGY/ISOLATION & PURIF
HIV-2/GENETICS/*IMMUNOLOGY/ISOLATION & PURIF Leukocytes,
Mononuclear/MICROBIOLOGY Polymerase Chain Reaction MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).