| pubmed-article:10756033 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C0002331 | lld:lifeskim |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C1953353 | lld:lifeskim |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C1335817 | lld:lifeskim |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C0392747 | lld:lifeskim |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C0599946 | lld:lifeskim |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C0205171 | lld:lifeskim |
| pubmed-article:10756033 | lifeskim:mentions | umls-concept:C0443172 | lld:lifeskim |
| pubmed-article:10756033 | pubmed:issue | 9 | lld:pubmed |
| pubmed-article:10756033 | pubmed:dateCreated | 2000-5-18 | lld:pubmed |
| pubmed-article:10756033 | pubmed:abstractText | S.A.AR86, a member of the Sindbis group of alphaviruses, is neurovirulent in adult mice and has a unique threonine at position 538 of nsP1; nonneurovirulent members of this group of alphaviruses encode isoleucine. Isoleucine was introduced at position 538 in the wild-type S.A.AR86 infectious clone, ps55, and virus derived from this mutant clone, ps51, was significantly attenuated for neurovirulence compared to that derived from ps55. Intracranial (i.c. ) s55 infection resulted in severe disease, including hind limb paresis, conjunctivitis, weight loss, and death in 89% of animals. In contrast, s51 caused fewer clinical signs and no mortality. Nevertheless, comparison of the virus derived from the mutant (ps51) and wild-type (ps55) S.A.AR86 molecular clones demonstrated that s51 grew as well as or better than the wild-type s55 virus in tissue culture and that viral titers in the brain following i.c. infection with s51 were equivalent to those of wild-type s55 virus. Analysis of viral replication within the brain by in situ hybridization revealed that both viruses established infection in similar regions of the brain at early times postinfection (12 to 72 h). However, at late times postinfection, the wild-type s55 virus had spread throughout large areas of the brain, while the s51 mutant exhibited a restricted pattern of replication. This suggests that s51 is either defective in spreading throughout the brain at late times postinfection or is cleared more rapidly than s55. Further evidence for the contribution of nsP1 Thr 538 to S.A.AR86 neurovirulence was provided by experiments in which a threonine residue was introduced at nsP1 position 538 of Sindbis virus strain TR339, which is nonneurovirulent in weanling mice. The resulting virus, 39ns1, demonstrated significantly increased neurovirulence and morbidity, including weight loss and hind limb paresis. These results demonstrate a role for alphavirus nonstructural protein genes in adult mouse neurovirulence. | lld:pubmed |
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| pubmed-article:10756033 | pubmed:language | eng | lld:pubmed |
| pubmed-article:10756033 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:10756033 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:10756033 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:10756033 | pubmed:month | May | lld:pubmed |
| pubmed-article:10756033 | pubmed:issn | 0022-538X | lld:pubmed |
| pubmed-article:10756033 | pubmed:author | pubmed-author:JohnstonR ERE | lld:pubmed |
| pubmed-article:10756033 | pubmed:author | pubmed-author:SimpsonD ADA | lld:pubmed |
| pubmed-article:10756033 | pubmed:author | pubmed-author:HeiseM TMT | lld:pubmed |
| pubmed-article:10756033 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:10756033 | pubmed:volume | 74 | lld:pubmed |
| pubmed-article:10756033 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:10756033 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:10756033 | pubmed:pagination | 4207-13 | lld:pubmed |
| pubmed-article:10756033 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:10756033 | pubmed:year | 2000 | lld:pubmed |
| pubmed-article:10756033 | pubmed:articleTitle | A single amino acid change in nsP1 attenuates neurovirulence of the Sindbis-group alphavirus S.A.AR86. | lld:pubmed |
| pubmed-article:10756033 | pubmed:affiliation | Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA. heisem@med.unc.edu | lld:pubmed |
| pubmed-article:10756033 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:10756033 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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