| pubmed-article:7682587 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0021311 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C1819995 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0021853 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0025252 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0003241 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0040557 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C1538722 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0069919 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0205164 | lld:lifeskim |
| pubmed-article:7682587 | lifeskim:mentions | umls-concept:C0591833 | lld:lifeskim |
| pubmed-article:7682587 | pubmed:issue | 9 | lld:pubmed |
| pubmed-article:7682587 | pubmed:dateCreated | 1993-5-20 | lld:pubmed |
| pubmed-article:7682587 | pubmed:abstractText | Monoclonal and polyclonal, monospecific antibodies to the major surface antigen of Toxoplasma gondii (SAG-1, P30) inhibit infection of human fibroblasts and murine enterocytes. Fab prepared from polyclonal, monospecific antibody to P30 also have this inhibitory effect on invasion, which indicates that this antibody directly blocks parasite infection of host cells rather agglutinating the parasite. Antibodies to another surface protein (P22) did not alter in vitro infection. If the inhibitory effect of antibody to P30 was due to steric hindrance or complexing of surface epitopes contiguous to P30, antibodies to other surface epitopes would also be inhibitory and they are not. Urea treatment of antibody (which permits discrimination of high and low avidity antibody) did not alter the effect of anti-P30 antibody. This observation indicates that the effect of the antibody to P30 was not an artifact of differences in the avidity of the antibody to P22 and P30. Heat inactivated antisera from mice infected with either RH or PTg strain T. gondii (P30+) inhibit infection of fibroblasts when challenged with autologous wild-type parasites by 87 and 40%, respectively. In contrast, these antisera have little inhibitory effect (13 and 19%, respectively) against infection of human fibroblasts by a P30-deficient mutant (PTgB). Antisera raised to the P30-deficient mutant had no significant effect on infection of cells by wild-type strains that have surface P30. The neoglycoprotein, BSA-glucosamide, competitively blocks infection of human fibroblasts by P30+ tachyzoites with surface P30 in higher level than those without surface P30. This observation indicates that there is likely to be a glycosylated host cell receptor to which T. gondii's major surface Ag SAG-1 (P30) binds. Mice infected perorally develop intestinal IgA antibody to the major 30-kDa epitope of T. gondii. Thus, the major surface epitope of T. gondii, SAG-1 (P30), has an important, functional role in infection of host cells by T. gondii and elicits an intestinal antibody response after peroral infection. | lld:pubmed |
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| pubmed-article:7682587 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:7682587 | pubmed:citationSubset | AIM | lld:pubmed |
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| pubmed-article:7682587 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:7682587 | pubmed:month | May | lld:pubmed |
| pubmed-article:7682587 | pubmed:issn | 0022-1767 | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:SmithJJ | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:McLeodRR | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:KasperL HLH | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:MackDD | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:MineoJ RJR | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:KhanI AIA | lld:pubmed |
| pubmed-article:7682587 | pubmed:author | pubmed-author:DyeD MDM | lld:pubmed |
| pubmed-article:7682587 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:7682587 | pubmed:day | 1 | lld:pubmed |
| pubmed-article:7682587 | pubmed:volume | 150 | lld:pubmed |
| pubmed-article:7682587 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:7682587 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:7682587 | pubmed:pagination | 3951-64 | lld:pubmed |
| pubmed-article:7682587 | pubmed:dateRevised | 2007-11-14 | lld:pubmed |
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| pubmed-article:7682587 | pubmed:year | 1993 | lld:pubmed |
| pubmed-article:7682587 | pubmed:articleTitle | Antibodies to Toxoplasma gondii major surface protein (SAG-1, P30) inhibit infection of host cells and are produced in murine intestine after peroral infection. | lld:pubmed |
| pubmed-article:7682587 | pubmed:affiliation | Department of Medicine, Dartmouth Medical School, Hanover, New Hampshire 03756. | lld:pubmed |
| pubmed-article:7682587 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:7682587 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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