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1994-10-25
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Document 2729
DOCN M94A2729
TI Cross reactivity of the HTLV-I, HTLV-II, HIV-1 positive sera with
heterologous synthetic peptides.
DT 9412
AU Rasulee A; Rasulee S; Klepikov N; Andreev S; Mescheryakova D; Tarasova
S; Gurtsevitch V; Co-operative BIOLAM, Cancer Research Center, Moscow,
Russia.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):238 (abstract no. PB0382). Unique
Identifier : AIDSLINE ICA10/94369846
AB OBJECTIVE: To study the cross reactivity of the positive sera (+S) from
HTLV-I, -II, and HIV-1 monoinfected patients with the synthetic peptides
(SP) corresponding to immunodominant B-epitopes of human retroviruses.
METHODS: 40 HTLV-I, 5 HTLV-II, and 25 HIV-1 +S were tested in ELISA with
12 SP from 9 structural protein regions of the HTLV-I, HIV-1, and HIV-2.
RESULTS: It was found that 3%-5% HTLV-I +S weakly cross reacted with
HIV-1 SP (301-323 and 495-516 gp120 env, 584-612 and 602-624 gp41 env).
Similarly, 8% HIV-1 +S interacted with HTLV-I SP (100-130 p19 gag,
376-392 and 381-400 gp21 env). One of the HTLV-II +S recognized two
HTLV-I SP (100-130 p19 gag and 381-400 gp21 env) and one HIV-1 SP
(495-516 gp120 env). Moreover, 13% and 42% HIV-1 +S respectively
strongly and weakly cross reacted with HIV-2 SP (581-603 gp36 env). No
one of the heterologous +S bound with HIV-1 SP (330-363 p24 gag), and
HTLV-I SP (120-130 p19 gag, 176-201 and 291-312 gp46 env). CONCLUSION:
Demonstrated cross reactivity must be taken into account in
type-specific SP diagnostics of retroviral infections. Study of the
aminoacid similarity between cross reactive SP and immunodominant
domains of heterologous retroviruses are in progress.
DE Cross Reactions/*IMMUNOLOGY Human HIV
Seropositivity/*DIAGNOSIS/IMMUNOLOGY HIV-1/*IMMUNOLOGY
HTLV-I/*IMMUNOLOGY HTLV-I Infections/*DIAGNOSIS/IMMUNOLOGY
HTLV-II/*IMMUNOLOGY HTLV-II Infections/*DIAGNOSIS/IMMUNOLOGY
Peptides/*IMMUNOLOGY Predictive Value of Tests MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).