PMID- 11960354 OWN - NLM STAT- MEDLINE DCOM- 20020507 LR - 20130304 IS - 0887-6924 (Print) IS - 0887-6924 (Linking) VI - 16 IP - 4 DP - 2002 Apr TI - Antibody status to HHV-6 in children with leukaemia. PG - 716-9 AB - Forty children with acute lymphoblastic (33) or myeloid leukaemia (seven) were studied for IgG and IgM antibodies and IgG avidity against human herpesvirus 6 (HHV-6) at the time of diagnosis, and compared with age-, sex- and season-matched children with various neurological diseases of suspected viral origin. Of the children with leukaemia, 97.5% had IgG antibodies and 40% IgM antibodies to HHV-6 compared with 92.3% and 7.7% of reference subjects (P = 0.005). A seronegative child with leukaemia seroconverted 3 weeks after the diagnosis. The avidity of IgG antibodies (based on the resistance to urea treatment) was high in all children with leukaemia. One reference child had HHV-6-specific IgG antibodies with low avidity, which together with his positive IgM indicated an acute infection. The presence of specific IgM antibodies in 40% of children with leukaemia and the high avidity of IgG suggest a reactivation or an inaproppriate primary response to HHV-6 infection. The results support the conclusion of the role of the HHV-6 infection at the onset of childhood leukaemia. FAU - Salonen, M J H AU - Salonen MJ AD - Haartman Institute, Department of Virology, University of Helsinki, Helsinki, Finland. FAU - Siimes, M A AU - Siimes MA FAU - Salonen, E-M AU - Salonen EM FAU - Vaheri, A AU - Vaheri A FAU - Koskiniemi, M AU - Koskiniemi M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (Antibodies, Viral) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin M) SB - IM MH - Adolescent MH - Age Factors MH - Antibodies, Viral/*blood MH - Child MH - Child, Preschool MH - Exanthema Subitum/*immunology/virology MH - Female MH - Herpesvirus 6, Human/*immunology MH - Humans MH - Immunoglobulin G/blood MH - Immunoglobulin M/*analysis MH - Infant MH - Leukemia, Myeloid, Acute/*immunology/virology MH - Male MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*immunology/virology EDAT- 2002/04/18 10:00 MHDA- 2002/05/08 10:01 CRDT- 2002/04/18 10:00 PHST- 2001/07/06 00:00 [received] PHST- 2001/11/20 00:00 [accepted] PHST- 2002/04/18 10:00 [pubmed] PHST- 2002/05/08 10:01 [medline] PHST- 2002/04/18 10:00 [entrez] AID - 10.1038/sj.leu.2402437 [doi] PST - ppublish SO - Leukemia. 2002 Apr;16(4):716-9. doi: 10.1038/sj.leu.2402437.