PMID- 2447227 OWN - NLM STAT- MEDLINE DCOM- 19880224 LR - 20061115 IS - 0022-1317 (Print) IS - 0022-1317 (Linking) VI - 69 ( Pt 1) DP - 1988 Jan TI - Measles virus strain-dependent variation in outcome of infection of human blood mononuclear cells. PG - 247-52 AB - Eight measles virus strains including four subacute sclerosing panencephalitis (SSPE) isolates were compared on the basis of their growth characteristics in human peripheral blood mononuclear cells and effect on mitogen-stimulated lymphocyte proliferation. The Edmonston strain virus and some other strains of measles virus replicated in phytohaemagglutinin (PHA)-stimulated lymphocytes and released high titres of infectious virus into the culture medium. Inhibition of DNA synthesis was relatively low at the beginning of lymphocyte proliferation and could be detected only at high multiplicity of infection. Three to 4 days after initiation of proliferation a strong inhibition was seen also in cultures infected with low doses of virus, and was apparently related to the production of high titres of new infectious virus. Some virus strains originally isolated from SSPE patients produced only a small amount of infectious virus in lymphocytes at 37 degrees C but had a very strong inhibitory effect on lymphocyte proliferation leading to early cell death. The inhibitory effect was found over a wide range of virus concentrations, but was strictly dose-dependent and no increase in inhibition with low multiplicities of infection could be seen with longer culture times. The amount of interferon induced by different strains varied from 400 to 6400 international units/ml but the amount of interferon produced in the cultures did not correlate with the inhibitory effect on proliferation or with the amount of released new infectious virus. The Halle measles strain, originally isolated from an SSPE patient, differed most from the Edmonston strain in its characteristics, and was studied in greater detail. Although only a small amount of infectious virus was produced, the Halle strain had a very strong inhibiting effect on the proliferation of PHA-stimulated lymphocytes, and extensive syncytium formation was seen leading to cell death within 3 days. FAU - Ilonen, J AU - Ilonen J AD - Department of Medical Microbiology and Infectious Diseases, Faculty of Medicine, University of Alberta, Edmonton, Canada. FAU - Salonen, R AU - Salonen R FAU - Marusyk, R AU - Marusyk R FAU - Salmi, A AU - Salmi A LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Gen Virol JT - The Journal of general virology JID - 0077340 RN - 0 (DNA, Viral) RN - 9008-11-1 (Interferons) SB - IM MH - Animals MH - Cell Line MH - DNA, Viral/biosynthesis MH - Humans MH - Interferons/biosynthesis MH - Kinetics MH - Leukocytes, Mononuclear/*microbiology MH - Lymphocyte Activation MH - Lymphocytes/microbiology MH - Measles virus/classification/*growth & development MH - Subacute Sclerosing Panencephalitis/*microbiology MH - Vero Cells EDAT- 1988/01/01 00:00 MHDA- 1988/01/01 00:01 CRDT- 1988/01/01 00:00 PHST- 1988/01/01 00:00 [pubmed] PHST- 1988/01/01 00:01 [medline] PHST- 1988/01/01 00:00 [entrez] AID - 10.1099/0022-1317-69-1-247 [doi] PST - ppublish SO - J Gen Virol. 1988 Jan;69 ( Pt 1):247-52. doi: 10.1099/0022-1317-69-1-247.