| A limiting-dilution analysis of activated circulating B cells in Crohn's disease. | |
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MedLine Citation:
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PMID: 2187016 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In the present study the spontaneous in vitro production of immunoglobulins G, A, and M by peripheral mononuclear cells was evaluated, in patients with Crohn's disease, in relation to the state of B-cell activation and further characterized by limiting-dilution analysis. A total of 25 patients with Crohn's disease and 10 healthy controls was studied. The proportion of the transferrin receptor-bearing cells in the B7+ subset was higher in active Crohn's disease patients than in either those with quiescent disease or controls. There was a significant rise in the in vitro IgG, IgM, and IgA production in patients with untreated active Crohn's disease compared to either those with untreated quiescent disease or controls. When patients were followed up from the active phase to clinical remission, a significant decrease in the production of IgG and IgM was observed. IgA levels also showed a decrease, although not reaching statistical significance. When the Ig production was analyzed by limiting dilution, no difference was observed between patients and controls in terms of either precursor frequency of Ig-producing cells or patterns of frequency distribution. In both patients and controls a biphasic limiting-dilution profile was observed. This study shows that a significant B-cell activation is present in Crohn's disease patients, which is accompanied by an increase in immunoglobulin production. This study also indicates that in Crohn's disease the increased immunoglobulin production is related to an augmented B-cell clone size rather than to an increased precursor frequency. |
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Authors:
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M Boirivant; F Quintieri; O Pugliese; G Famularo; S Fais; F Pallone |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of clinical immunology Volume: 10 ISSN: 0271-9142 ISO Abbreviation: J. Clin. Immunol. Publication Date: 1990 Mar |
Date Detail:
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Created Date: 1990-06-19 Completed Date: 1990-06-19 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8102137 Medline TA: J Clin Immunol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 128-34 Citation Subset: IM |
Affiliation:
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Cattedra di Gastroenterologia I, Universitá La Sapienza, Roma, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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B-Lymphocytes
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immunology* Cells, Cultured Crohn Disease / drug therapy, immunology* Fluorescent Antibody Technique Humans Immunoglobulin A / biosynthesis Immunoglobulin G / biosynthesis Immunoglobulin Isotypes / biosynthesis* Immunoglobulin M / biosynthesis Leukocytes, Mononuclear / immunology* Lymphocyte Activation / immunology Prednisone / therapeutic use Statistics as Topic |
| Chemical | |
Reg. No./Substance:
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0/Immunoglobulin A; 0/Immunoglobulin G; 0/Immunoglobulin Isotypes; 0/Immunoglobulin M; 53-03-2/Prednisone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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