PMID- 8432811 OWN - NLM STAT- MEDLINE DCOM- 19930316 LR - 20210526 IS - 0095-1137 (Print) IS - 1098-660X (Electronic) IS - 0095-1137 (Linking) VI - 31 IP - 2 DP - 1993 Feb TI - Evaluation of an immunoblot assay for serological confirmation and differentiation of human T-cell lymphotropic virus types I and II. PG - 260-4 AB - The confirmation of infection with human T-cell lymphotropic virus type I (HTLV-I) and type II (HTLV-II) currently involves multiple assays. These include Western blot (immunoblot) (WB) and/or radioimmunoprecipitation assay for detection of antibodies to HTLV-specific viral proteins and polymerase chain reaction and/or peptide-based enzyme immunoassays for differentiating between the two viruses. We undertook an evaluation of a modified WB assay that includes native HTLV-I viral proteins from MT-2 cells spiked with an HTLV-I transmembrane glycoprotein (recombinant p21e) and the HTLV-I- and HTLV-II-specific recombinant proteins MTA-1 and K55. The test panel consisted of well-characterized sera from U.S. blood donors, American Indians, intravenous drug users, and patients seen in sexually transmitted disease clinics. Of 158 HTLV-I/II-seropositive serum specimens tested, 156 (98.7%) were confirmed and typed as HTLV-I or HTLV-II. Of 82 HTLV-I/II-seroindeterminate or -seronegative serum specimens, only 1 was classified as HTLV-II positive: the sample had weak gag p19 and strong gag p24 and env p21e reactivity and was radioimmunoprecipitation assay negative for env gp61/68 but polymerase chain reaction positive for HTLV-II. The specificity of the modified WB for confirming and typing serum samples was therefore 100%. We conclude that this WB assay is useful for confirming and typing HTLV infection and can help simplify HTLV-I/II testing algorithms. FAU - Roberts, B D AU - Roberts BD AD - Division of Viral and Rickettsial Diseases, Centers for Disease Control, Atlanta, Georgia 30333. FAU - Foung, S K AU - Foung SK FAU - Lipka, J J AU - Lipka JJ FAU - Kaplan, J E AU - Kaplan JE FAU - Hadlock, K G AU - Hadlock KG FAU - Reyes, G R AU - Reyes GR FAU - Chan, L AU - Chan L FAU - Heneine, W AU - Heneine W FAU - Khabbaz, R F AU - Khabbaz RF LA - eng GR - DA06596/DA/NIDA NIH HHS/United States GR - HL33811/HL/NHLBI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (HTLV-I Antibodies) RN - 0 (HTLV-II Antibodies) SB - IM MH - Blotting, Western/*methods/statistics & numerical data MH - Evaluation Studies as Topic MH - HTLV-I Antibodies/blood MH - HTLV-I Infections/diagnosis MH - HTLV-II Antibodies/blood MH - HTLV-II Infections/diagnosis MH - Human T-lymphotropic virus 1/classification/*immunology/isolation & purification MH - Human T-lymphotropic virus 2/classification/*immunology/isolation & purification MH - Humans MH - Sensitivity and Specificity MH - Serotyping PMC - PMC262746 EDAT- 1993/02/01 00:00 MHDA- 1993/02/01 00:01 PMCR- 1993/02/01 CRDT- 1993/02/01 00:00 PHST- 1993/02/01 00:00 [pubmed] PHST- 1993/02/01 00:01 [medline] PHST- 1993/02/01 00:00 [entrez] PHST- 1993/02/01 00:00 [pmc-release] AID - 10.1128/jcm.31.2.260-264.1993 [doi] PST - ppublish SO - J Clin Microbiol. 1993 Feb;31(2):260-4. doi: 10.1128/jcm.31.2.260-264.1993.