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M94A2689.TXT
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1994-10-25
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Document 2689
DOCN M94A2689
TI The correlation between HIV synthetic peptide-based ELISA sensitivity
and peptide conformation.
DT 9412
AU Nikolaeva I; Sidorovitch IG; Khaitov RM; Andreev SM; Prokopenko VD;
Tarasova SO; Denisova SK; Institute of Immunology, Moscow, Russia.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):247 (abstract no. PB0416). Unique
Identifier : AIDSLINE ICA10/94369886
AB OBJECTIVE. To evaluate the comparative immunoreactivity of synthetic
peptide (SP) fragments from immunodominant region of gp41 HIV-1 for the
greater SP-based ELISA sensitivity. METHODS. Antigens: SP(1)aa584-604,
Wang, 1986; (2)aa601-624, linear; (3)aa601-624, cyclic, with C603-C609
S-S bond; Sera panels: A (29 WB confirmed HIV-1 positive samples from
patients followed-up at the Inst.Imunol. since 1985); B (16 WB confirmed
HIV-1 positive samples with low antiHIV antibody titers, lycensed in RF
for quality control of commercial HIV ELISAs), C (11 WB confirmed HIV-1
positive samples, Uganda). RESULTS. The ratios of # samples tested/#
samples detected as positives were for panel A 23/29 (SP1), 28/29 (SP2),
29/29 (SP3); for panel B 0/16 (SP1), 9/16 (SP2), 16/16 (SP3); for panel
C 4/11 (SP1), 6/11 (SP2), 10/11 (SP3). DISCUSSION AND CONCLUSIONS.
Cyclic SP3 provides more accurate HIV Ab detection, than its linear
analog (SP3 recognizes 55 of 56 specimens tested vs 43 of 56 for SP2),
especially for the weak (low Ab titer) sera, probably due to better
modelling of the At-binding site of viral gp41.
DE AIDS Serodiagnosis/*METHODS Blotting, Western Comparative Study
Enzyme-Linked Immunosorbent Assay/*METHODS Human HIV Antibodies/*BLOOD
HIV Envelope Protein gp41/*IMMUNOLOGY HIV
Seropositivity/*DIAGNOSIS/IMMUNOLOGY HIV-1/*IMMUNOLOGY Peptide
Fragments/*IMMUNOLOGY Predictive Value of Tests Protein Conformation
MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).