{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T01:27:28Z","timestamp":1781832448890,"version":"3.54.5"},"reference-count":25,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2012,5,24]],"date-time":"2012-05-24T00:00:00Z","timestamp":1337817600000},"content-version":"vor","delay-in-days":23,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Laboratory Analysis"],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:p><jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>g<jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>against aquaporin\u20104 (<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4) is a specific marker for neuromyelitis optica (<jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>). We evaluated the performance of different <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>g<jats:styled-content style=\"fixed-case\">G<\/jats:styled-content> detecting methods. In 124 sera (from 54 with <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> spectrum disorders including nine with <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>, ten with multiple sclerosis including two with <jats:styled-content style=\"fixed-case\">OSMS<\/jats:styled-content>, and 60 with other neurological diseases), <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>g<jats:styled-content style=\"fixed-case\">G<\/jats:styled-content> was measured with tissue\u2010based indirect immunofluorescence (<jats:styled-content style=\"fixed-case\">IIF<\/jats:styled-content>\u2010tissue) using mouse cerebellum, cell\u2010based <jats:styled-content style=\"fixed-case\">IIF<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">IIF<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4) using transfected <jats:styled-content style=\"fixed-case\">HEK<\/jats:styled-content>293 cells which express human <jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4, and <jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4 autoantibody detecting enzyme linked immunosorbent assay (<jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4). The sensitivities and specificities of three assays were 44.4\u201355.6% and 87.0\u201392.2% for detecting <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>, and 11.1\u201320.4% and 95.7\u201397.1% for detecting <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> spectrum disorders. Although there was no significant difference, the patients with <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> or <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> spectrum disorders showed higher rates of seropositivity in the <jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4 vs. <jats:styled-content style=\"fixed-case\">IIF<\/jats:styled-content> assays. Out of the 19 sera with <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>g<jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>, in at least one test, only six (31.6%) were found to be positive by all three assays. Among the three methods, the ranges of co\u2010negativities, co\u2010positivities, and agreement were 77.4\u201397.4%, 42.9\u201375.0%, and 91.1\u201395.2% (kappa 0.475\u20130.641), respectively. In patients who had positive <jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4 results, <jats:styled-content style=\"fixed-case\">IIF<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4 positivity was associated with <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> (<jats:italic>P<\/jats:italic> = 0.01). In summary, we observed an increased prevalence of <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>g<jats:styled-content style=\"fixed-case\">G<\/jats:styled-content> in patients with <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">NMO<\/jats:styled-content> spectrum disorders. <jats:styled-content style=\"fixed-case\">ELISA<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4 may be more sensitive and specific when confirmed by <jats:styled-content style=\"fixed-case\">IIF<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">AQP<\/jats:styled-content>4. J. Clin. Lab. Anal. 26:184\u2010189, 2012. \u00a9 2012 Wiley Periodicals, Inc.<\/jats:p>","DOI":"10.1002\/jcla.21508","type":"journal-article","created":{"date-parts":[[2012,5,24]],"date-time":"2012-05-24T18:55:00Z","timestamp":1337885700000},"page":"184-189","source":"Crossref","is-referenced-by-count":19,"title":["Detection of Anti\u2010Aquaporin\u20104 Antibodies in Neuromyelitis Optica: Comparison of Tissue\u2010Based and Cell\u2010Based Indirect Immunofluorescence Assays and 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