{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T05:36:39Z","timestamp":1791351399311,"version":"4.3.1"},"reference-count":34,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2012,11,1]],"date-time":"2012-11-01T00:00:00Z","timestamp":1351728000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2012,11,1]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>B1 B cells represent a unique subset of B lymphocytes distinct from conventional B2 B cells, and are important in the production of natural antibodies. A potential human homologue of murine B1 cells was defined recently as a CD20+CD27+CD43+ cell. Common variable immunodeficiency (CVID) is a group of heterogeneous conditions linked by symptomatic primary antibody failure. In this preliminary report, we examined the potential clinical utility of introducing CD20+CD27+CD43+B1 cell immunophenotyping as a routine assay in a diagnostic clinical laboratory. Using a whole blood assay, putative B1 B cells in healthy controls and in CVID patients were measured. Peripheral blood from 33 healthy donors and 16 CVID patients were stained with relevant monoclonal antibodies and underwent flow cytometric evaluation. We established a rapid, whole blood flow cytometric assay to investigate putative human B1 B cells. Examination of CD20+CD27+CD43+ cells is complicated by CD3+CD27+CD43hiT cell contamination, even when using stringent CD20 gating. These can be excluded by gating on CD27+CD43lo\u2013intB cells. Although proportions of CD20+CD27\u2013CD43lo\u2013int cells within B cells in CVID patients were decreased by 50% compared to controls (P &amp;lt; 0\u00b701), this was not significant when measured as a percentage of all CD27+B cells (P = 0\u00b778). Immunophenotypic overlap of this subset with other innate-like B cells described recently in humans is limited. We have shown that putative B1 B cell immunophenotyping can be performed rapidly and reliably using whole blood. CD20+CD27+CD43lo\u2013int cells may represent a distinct B1 cell subset within CD27+B cells. CVID patients were not significantly different from healthy controls when existing CD27+B cell deficiencies were taken into account.<\/jats:p>","DOI":"10.1111\/j.1365-2249.2012.04656.x","type":"journal-article","created":{"date-parts":[[2012,8,20]],"date-time":"2012-08-20T12:15:15Z","timestamp":1345464915000},"page":"333-341","source":"Crossref","is-referenced-by-count":29,"title":["Immunophenotyping of putative human B1 B cells in healthy controls and common variable immunodeficiency (CVID) patients"],"prefix":"10.1093","volume":"170","author":[{"given":"O","family":"Suchanek","sequence":"first","affiliation":[{"name":"Clinical Laboratory Immunology, Oxford University Hospitals, Oxford, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R","family":"Sadler","sequence":"additional","affiliation":[{"name":"Clinical Laboratory Immunology, Oxford University Hospitals, Oxford, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E A","family":"Bateman","sequence":"additional","affiliation":[{"name":"Clinical Laboratory Immunology, Oxford University Hospitals, Oxford, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S Y","family":"Patel","sequence":"additional","affiliation":[{"name":"Department of Clinical Immunology, Oxford University Hospitals, Oxford, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B L","family":"Ferry","sequence":"additional","affiliation":[{"name":"Clinical Laboratory Immunology, Oxford University Hospitals, Oxford, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2012,11,1]]},"reference":[{"key":"2021122708134307700_cei4656-bib-0001","doi-asserted-by":"crossref","first-page":"202","DOI":"10.1084\/jem.157.1.202","article-title":"The \u2018Ly-1 B\u2019 cell subpopulation in normal immunodefective, and autoimmune mice","volume":"157","author":"Hayakawa","year":"1983","journal-title":"J Exp 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