{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T08:03:28Z","timestamp":1789718608150,"version":"4.0.1"},"reference-count":43,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2007,2,27]],"date-time":"2007-02-27T00:00:00Z","timestamp":1172534400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cytometry Part B Clinical"],"published-print":{"date-parts":[[2007,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background:<\/jats:title><jats:p>In this study, we evaluated alternative possibility for CFSE beryllium flow cytometric test against beryllium blood lymphocyte proliferation test (BeLPT) as a standard radioactive clinical screening method to identify sensitization to beryllium.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods:<\/jats:title><jats:p>Delta PD (the ratio of divided cell population to the total number of cells with subtracted counts of unstimulated cells) of specific beryllium\u2010induced pathogenic CD3<jats:sup>+<\/jats:sup>CD4<jats:sup>+<\/jats:sup> T\u2010lymphocytes and stimulation index (SI) in CFSE proliferation test was compared with delta counts per minute (mean test CPM minus mean control CPM) and SI in radioactive blood BeLPT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results:<\/jats:title><jats:p>Comparison analysis of CFSE and BeLPT demonstrated excellent agreement between delta PD and delta CPM (\u03ba = 0.845, <jats:italic>P<\/jats:italic> &lt;&lt; 0.0001). We determined 6.8% positive subjects in the beryllium\u2010exposed, Be\u2010LPT\u2010negative group. The decreased mean difference of these indexes to percentage of average and the long tail in the plot reflects increased sensitivity. CFSE\/CD4<jats:sup>+<\/jats:sup> T\u2010cell proliferation assay has 100% specificity, significantly higher sensitivity and efficiency than BeLPT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions:<\/jats:title><jats:p>Both delta PD, measured by the precursor frequencies method in CFSE assay and delta CPM, defined by tritiated thymidine in BeLPT, can be used for the enumeration of beryllium specific CD4+ T\u2010cell proliferation and may substantially improve the quality of the early diagnosis of beryllium hypersensitivity. \u00a9 2007 Clinical Cytometry Society.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cyto.b.20166","type":"journal-article","created":{"date-parts":[[2007,2,27]],"date-time":"2007-02-27T17:12:08Z","timestamp":1172596328000},"page":"265-275","source":"Crossref","is-referenced-by-count":19,"title":["Comparative analysis between CFSE flow cytometric and tritiated thymidine incorporation tests for beryllium 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