{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T16:51:16Z","timestamp":1760547076732},"reference-count":31,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2002,5,13]],"date-time":"2002-05-13T00:00:00Z","timestamp":1021248000000},"content-version":"vor","delay-in-days":42,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasite Immunology"],"published-print":{"date-parts":[[2002,4]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>Published genomic differences between <jats:roman>Cryptosporidium parvum<\/jats:roman> genotype 1 (human\u2010derived) and genotype 2 (animal and human\u2010derived) isolates suggest that these may belong to two distinct species. This is of significant interest since genotype 1 isolates are associated with sporadic cases of human cryptosporidiosis in 30\u201340% of cases in contrast to 60\u201370% of cases caused by genotype 2. The lower genetic sequence similarity between genotype 1 and 2 surface glycoproteins (gp40\/15) suggests that antigenic differences should also occur, a feature that was investigated in this study. Using immune and convalescent serum samples from gnotobiotic piglets previously inoculated with genotype 1 and 2 isolates, we demonstrated that <jats:roman>C. parvum<\/jats:roman> gp15 was immunodominant for both genotype 1 and 2 isolates. Lower genetic sequence similarity between genotype 1 and 2 <jats:roman>Cpgp40\/15<\/jats:roman> did correspond to gp15 protein differences as detected by Western blot. Moreover, we confirmed that gp15 contains epitopes that are also immunodominant. Deglycosylation of <jats:roman>C. parvum<\/jats:roman> proteins resulted in decreased ability of gp15, gp23 and gp900 to react with homologous polyclonal antibodies, suggesting that these proteins also express carbohydrate epitopes. Taken together, our data suggest that there is a high phenotypic variability between <jats:roman>C. parvum<\/jats:roman> genotype 1 and 2 isolates at the level of gp15. We contemplate that gp15 surface glycoprotein plays an important role in the biology of <jats:roman>C. parvum<\/jats:roman> as a potent inducer of immune response and a possible virulence factor.<\/jats:p>","DOI":"10.1046\/j.1365-3024.2002.00455.x","type":"journal-article","created":{"date-parts":[[2003,3,12]],"date-time":"2003-03-12T17:11:16Z","timestamp":1047489076000},"page":"213-219","source":"Crossref","is-referenced-by-count":17,"title":["Variability among <i>Cryptosporidium parvum<\/i> genotype 1 and 2 immunodominant surface glycoproteins"],"prefix":"10.1111","volume":"24","author":[{"given":"K.","family":"Sestak","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L. 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