{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T07:02:27Z","timestamp":1790406147384,"version":"4.1.0"},"reference-count":49,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2000,3,1]],"date-time":"2000-03-01T00:00:00Z","timestamp":951868800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2000,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The accumulation of B lymphocyte clones in the cerebrospinal fluid (CSF) of patients with multiple sclerosis (MS) and patients with other neurological disorders was investigated using PCR technologies. Oligoclonal B cell accumulations were detected in 10 of 10 MS patients, but only in 3 of 10 of the patients with other neurological disorders. Analyses of the Ig V(D)J sequences on the CSF from MS patients disclosed that VH3 and VH4 genes were extensively mutated compared with germline sequences. Moreover, a substantial proportion of the molecular clones analyzed shared the same third CDR of the H chain variable region gene (HCDR3) and the same VH genes, albeit with different numbers and locations of point mutations, thus indicating an ongoing process of intraclonal diversification. A larger number of clonally related VH sequences could be obtained by using a VH3 gene-specific PCR so that genealogical trees depicting the process of diversification could be drawn. Analyses of the Ig V(D)J from the CSF of a patient with viral meningitis and oligoclonal B cell accumulations revealed that VH3 genes were extensively mutated. However, no intraclonal diversification could be observed even using VH3 gene-specific PCR methodologies. Clone-specific PCR and sequencing was used to detect the V(D)J found in the CSF of one MS patient in the PBL of the same patient. Only 1\/3 of the V(D)J sequences investigated could be demonstrated in the PBL, indicating that the V(D)J genes utilized by B cells in the CSF are much less represented in the PBL. Collectively, the data suggest that in MS there is a compartmentalized clonal expansion.<\/jats:p>","DOI":"10.4049\/jimmunol.164.5.2782","type":"journal-article","created":{"date-parts":[[2014,4,21]],"date-time":"2014-04-21T19:48:34Z","timestamp":1398109714000},"page":"2782-2789","source":"Crossref","is-referenced-by-count":201,"title":["Accumulation of Clonally Related B Lymphocytes in the Cerebrospinal Fluid of Multiple Sclerosis Patients"],"prefix":"10.1093","volume":"164","author":[{"given":"Monica","family":"Colombo","sequence":"first","affiliation":[{"name":"Servizio di Immunologia Clinica, Istituto Nazionale per la Ricerca sul Cancro , Genova ,","place":["Italy"]},{"name":"Istituto di Medicina Interna, Universita\u0300 degli Studi di Milano , Milan ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariella","family":"Dono","sequence":"additional","affiliation":[{"name":"Servizio di Immunologia Clinica, Istituto Nazionale per la Ricerca sul Cancro , Genova ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paola","family":"Gazzola","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Neurologiche e della Visione, Universita\u0300 degli Studi di Genova , Genova ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvio","family":"Roncella","sequence":"additional","affiliation":[{"name":"Servizio di Immunologia Clinica, Istituto Nazionale per la Ricerca sul Cancro , Genova ,","place":["Italy"]},{"name":"Divisione di Anatomia Patologica, Ospedale Sant\u2019Andrea , 19100 La Spezia ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angelo","family":"Valetto","sequence":"additional","affiliation":[{"name":"Department of Medicine, North Shore University Hospital and New York University School of Medicine , Manhasset, New York, NY 77030"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas","family":"Chiorazzi","sequence":"additional","affiliation":[{"name":"Department of Medicine, North Shore University Hospital and New York University School of Medicine , Manhasset, New York, NY 77030"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanni L","family":"Mancardi","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Neurologiche e della Visione, Universita\u0300 degli Studi di Genova , Genova ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manlio","family":"Ferrarini","sequence":"additional","affiliation":[{"name":"Servizio di Immunologia Clinica, Istituto Nazionale per la Ricerca sul Cancro , Genova ,","place":["Italy"]},{"name":"Dipartimento di Oncologia, Biologia e Genetica, Universita\u0300 degli Studi di Genova , Genova ,","place":["Italy"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2000,3,1]]},"reference":[{"key":"2026020213164090200_R1","first-page":"75","volume-title":"Immunol. 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