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Correlation of serum B lymphocyte stimulator and β2 microglobulin with autoantibody secretion and systemic involvement in primary Sjögren’s syndrome

Identifieur interne : 001436 ( Istex/Corpus ); précédent : 001435; suivant : 001437

Correlation of serum B lymphocyte stimulator and β2 microglobulin with autoantibody secretion and systemic involvement in primary Sjögren’s syndrome

Auteurs : J-E Gottenberg ; M. Busson ; J. Cohen-Solal ; F. Lavie ; K. Abbed ; R P Kimberly ; J. Sibilia ; X. Mariette

Source :

RBID : ISTEX:09EF1A5FE6EEE42F7CC060AD8734A806E9491908

English descriptors

Abstract

Background: In primary Sjögren’s syndrome (pSS), extraglandular involvement might result from more intense stimulation of autoreactive B cells. Thus markers of B cell activation could be useful in the clinical assessment of this disease. Objective: To investigate the association of serum B lymphocyte stimulator (BLyS) and β2 microglobulin with autoantibody production and extraglandular involvement in pSS. Methods: Serum concentrations of BLyS and β2 microglobulin were analysed in 177 patients with pSS according to the American–European consensus group criteria. Serum β2 microglobulin was determined serially in 25 patients. Results: Autoantibody secretion (presence of anti-SSA antibody alone or of both anti-SSA and anti-SSB) was associated with increased serum BLyS and β2 microglobulin. No correlation was found between BLyS and β2 microglobulin levels (p = 0.36). Serum concentrations of β2 microglobulin and C reactive protein and positive anti-SSB antibody results were associated with extraglandular involvement on univariate analysis (p<10−4, p = 0.003, and p = 0.004, respectively). Serum β2 microglobulin was also significantly increased in patients with extraglandular involvement without autoantibodies (mean (SD): 1.75 (0.7) v 1.39 (0.5) mg/l, p = 0.039). Multivariate analysis showed that extraglandular involvement was associated only with increased serum β2 microglobulin (p = 0.035, odds ratio = 2.78 (95% confidence interval, 1.07 to 7.22)). Among the 25 patients who had serial determinations of serum β2 microglobulin, the concentrations were increased in all those with disease flare and decreased in three following treatment. Serum BLyS, gamma globulin, IgG, and rheumatoid factor levels were not associated with features of systemic involvement. Conclusions: Serum β2 microglobulin and BLyS reflect B cell activation in different ways in pSS. Serum β2 microglobulin assessment could be helpful as an activity marker in pSS.

Url:
DOI: 10.1136/ard.2004.030643

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ISTEX:09EF1A5FE6EEE42F7CC060AD8734A806E9491908

Le document en format XML

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<div type="abstract" xml:lang="en">Background: In primary Sjögren’s syndrome (pSS), extraglandular involvement might result from more intense stimulation of autoreactive B cells. Thus markers of B cell activation could be useful in the clinical assessment of this disease. Objective: To investigate the association of serum B lymphocyte stimulator (BLyS) and β2 microglobulin with autoantibody production and extraglandular involvement in pSS. Methods: Serum concentrations of BLyS and β2 microglobulin were analysed in 177 patients with pSS according to the American–European consensus group criteria. Serum β2 microglobulin was determined serially in 25 patients. Results: Autoantibody secretion (presence of anti-SSA antibody alone or of both anti-SSA and anti-SSB) was associated with increased serum BLyS and β2 microglobulin. No correlation was found between BLyS and β2 microglobulin levels (p = 0.36). Serum concentrations of β2 microglobulin and C reactive protein and positive anti-SSB antibody results were associated with extraglandular involvement on univariate analysis (p<10−4, p = 0.003, and p = 0.004, respectively). Serum β2 microglobulin was also significantly increased in patients with extraglandular involvement without autoantibodies (mean (SD): 1.75 (0.7) v 1.39 (0.5) mg/l, p = 0.039). Multivariate analysis showed that extraglandular involvement was associated only with increased serum β2 microglobulin (p = 0.035, odds ratio = 2.78 (95% confidence interval, 1.07 to 7.22)). Among the 25 patients who had serial determinations of serum β2 microglobulin, the concentrations were increased in all those with disease flare and decreased in three following treatment. Serum BLyS, gamma globulin, IgG, and rheumatoid factor levels were not associated with features of systemic involvement. Conclusions: Serum β2 microglobulin and BLyS reflect B cell activation in different ways in pSS. Serum β2 microglobulin assessment could be helpful as an activity marker in pSS.</div>
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<abstract>Background: In primary Sjögren’s syndrome (pSS), extraglandular involvement might result from more intense stimulation of autoreactive B cells. Thus markers of B cell activation could be useful in the clinical assessment of this disease. Objective: To investigate the association of serum B lymphocyte stimulator (BLyS) and β2 microglobulin with autoantibody production and extraglandular involvement in pSS. Methods: Serum concentrations of BLyS and β2 microglobulin were analysed in 177 patients with pSS according to the American–European consensus group criteria. Serum β2 microglobulin was determined serially in 25 patients. Results: Autoantibody secretion (presence of anti-SSA antibody alone or of both anti-SSA and anti-SSB) was associated with increased serum BLyS and β2 microglobulin. No correlation was found between BLyS and β2 microglobulin levels (p = 0.36). Serum concentrations of β2 microglobulin and C reactive protein and positive anti-SSB antibody results were associated with extraglandular involvement on univariate analysis (p>10−4, p = 0.003, and p = 0.004, respectively). Serum β2 microglobulin was also significantly increased in patients with extraglandular involvement without autoantibodies (mean (SD): 1.75 (0.7) v 1.39 (0.5) mg/l, p = 0.039). Multivariate analysis showed that extraglandular involvement was associated only with increased serum β2 microglobulin (p = 0.035, odds ratio = 2.78 (95% confidence interval, 1.07 to 7.22)). Among the 25 patients who had serial determinations of serum β2 microglobulin, the concentrations were increased in all those with disease flare and decreased in three following treatment. Serum BLyS, gamma globulin, IgG, and rheumatoid factor levels were not associated with features of systemic involvement. Conclusions: Serum β2 microglobulin and BLyS reflect B cell activation in different ways in pSS. Serum β2 microglobulin assessment could be helpful as an activity marker in pSS.</abstract>
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<note>Correspondence to:
 Professor Xavier Mariette
 Service de Rhumatologie, Hôpital de Bicêtre, 78 rue du Général Leclerc, 94275 Le Kremlin Bicêtre, France; xavier.mariette@bct.ap-hop-paris.fr</note>
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<p>Background: In primary Sjögren’s syndrome (pSS), extraglandular involvement might result from more intense stimulation of autoreactive B cells. Thus markers of B cell activation could be useful in the clinical assessment of this disease. Objective: To investigate the association of serum B lymphocyte stimulator (BLyS) and β2 microglobulin with autoantibody production and extraglandular involvement in pSS. Methods: Serum concentrations of BLyS and β2 microglobulin were analysed in 177 patients with pSS according to the American–European consensus group criteria. Serum β2 microglobulin was determined serially in 25 patients. Results: Autoantibody secretion (presence of anti-SSA antibody alone or of both anti-SSA and anti-SSB) was associated with increased serum BLyS and β2 microglobulin. No correlation was found between BLyS and β2 microglobulin levels (p = 0.36). Serum concentrations of β2 microglobulin and C reactive protein and positive anti-SSB antibody results were associated with extraglandular involvement on univariate analysis (p<10−4, p = 0.003, and p = 0.004, respectively). Serum β2 microglobulin was also significantly increased in patients with extraglandular involvement without autoantibodies (mean (SD): 1.75 (0.7) v 1.39 (0.5) mg/l, p = 0.039). Multivariate analysis showed that extraglandular involvement was associated only with increased serum β2 microglobulin (p = 0.035, odds ratio = 2.78 (95% confidence interval, 1.07 to 7.22)). Among the 25 patients who had serial determinations of serum β2 microglobulin, the concentrations were increased in all those with disease flare and decreased in three following treatment. Serum BLyS, gamma globulin, IgG, and rheumatoid factor levels were not associated with features of systemic involvement. Conclusions: Serum β2 microglobulin and BLyS reflect B cell activation in different ways in pSS. Serum β2 microglobulin assessment could be helpful as an activity marker in pSS.</p>
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<name name-style="western">
<surname>Gottenberg</surname>
<given-names>J-E</given-names>
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<xref rid="AFF1">1</xref>
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<name name-style="western">
<surname>Busson</surname>
<given-names>M</given-names>
</name>
<xref rid="AFF2">2</xref>
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<xref rid="AFF3">3</xref>
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<xref rid="AFF5">5</xref>
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<xref rid="AFF3">3</xref>
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<contrib contrib-type="author" xlink:type="simple">
<name name-style="western">
<surname>Mariette</surname>
<given-names>X</given-names>
</name>
<xref rid="AFF1">1</xref>
</contrib>
<aff id="AFF1">
<label>1</label>
Rhumatologie, INSERM EMI 109, Bicêtre Hospital, Le Kremlin Bicêtre, France</aff>
<aff id="AFF2">
<label>2</label>
INSERM U396 et Immunologie et Histocompatibilité, Hôpital Saint-Louis (AP-HP), Paris, France</aff>
<aff id="AFF3">
<label>3</label>
Rhumatologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France</aff>
<aff id="AFF4">
<label>4</label>
Immunologie, Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris (AP-HP), Le Kremlin Bicêtre</aff>
<aff id="AFF5">
<label>5</label>
Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama, USA</aff>
</contrib-group>
<author-notes>
<corresp>Correspondence to:
 Professor Xavier Mariette
 Service de Rhumatologie, Hôpital de Bicêtre, 78 rue du Général Leclerc, 94275 Le Kremlin Bicêtre, France;
<ext-link xlink:href="xavier.mariettebct.ap-hop-paris.fr" ext-link-type="email" xlink:type="simple">xavier.mariette@bct.ap-hop-paris.fr</ext-link>
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<month>7</month>
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<volume-id pub-id-type="other">64</volume-id>
<volume-id pub-id-type="other">64</volume-id>
<issue>7</issue>
<issue-id pub-id-type="other">annrheumdis;64/7</issue-id>
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<day>16</day>
<month>11</month>
<year>2004</year>
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<copyright-year>2005</copyright-year>
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<abstract xml:lang="en">
<p>
<bold>Background:</bold>
In primary Sjögren’s syndrome (pSS), extraglandular involvement might result from more intense stimulation of autoreactive B cells. Thus markers of B cell activation could be useful in the clinical assessment of this disease.</p>
<p>
<bold>Objective:</bold>
To investigate the association of serum B lymphocyte stimulator (BLyS) and β
<sub>2</sub>
microglobulin with autoantibody production and extraglandular involvement in pSS.</p>
<p>
<bold>Methods:</bold>
Serum concentrations of BLyS and β
<sub>2</sub>
microglobulin were analysed in 177 patients with pSS according to the American–European consensus group criteria. Serum β
<sub>2</sub>
microglobulin was determined serially in 25 patients.</p>
<p>
<bold>Results:</bold>
Autoantibody secretion (presence of anti-SSA antibody alone or of both anti-SSA and anti-SSB) was associated with increased serum BLyS and β
<sub>2</sub>
microglobulin. No correlation was found between BLyS and β
<sub>2</sub>
microglobulin levels (p = 0.36). Serum concentrations of β
<sub>2</sub>
microglobulin and C reactive protein and positive anti-SSB antibody results were associated with extraglandular involvement on univariate analysis (p<10
<sup>−4</sup>
, p = 0.003, and p = 0.004, respectively). Serum β
<sub>2</sub>
microglobulin was also significantly increased in patients with extraglandular involvement without autoantibodies (mean (SD): 1.75 (0.7)
<italic>v</italic>
1.39 (0.5) mg/l, p = 0.039). Multivariate analysis showed that extraglandular involvement was associated only with increased serum β
<sub>2</sub>
microglobulin (p = 0.035, odds ratio = 2.78 (95% confidence interval, 1.07 to 7.22)). Among the 25 patients who had serial determinations of serum β
<sub>2</sub>
microglobulin, the concentrations were increased in all those with disease flare and decreased in three following treatment. Serum BLyS, gamma globulin, IgG, and rheumatoid factor levels were not associated with features of systemic involvement.</p>
<p>
<bold>Conclusions:</bold>
Serum β
<sub>2</sub>
microglobulin and BLyS reflect B cell activation in different ways in pSS. Serum β
<sub>2</sub>
microglobulin assessment could be helpful as an activity marker in pSS.</p>
</abstract>
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<abstract lang="en">Background: In primary Sjögren’s syndrome (pSS), extraglandular involvement might result from more intense stimulation of autoreactive B cells. Thus markers of B cell activation could be useful in the clinical assessment of this disease. Objective: To investigate the association of serum B lymphocyte stimulator (BLyS) and β2 microglobulin with autoantibody production and extraglandular involvement in pSS. Methods: Serum concentrations of BLyS and β2 microglobulin were analysed in 177 patients with pSS according to the American–European consensus group criteria. Serum β2 microglobulin was determined serially in 25 patients. Results: Autoantibody secretion (presence of anti-SSA antibody alone or of both anti-SSA and anti-SSB) was associated with increased serum BLyS and β2 microglobulin. No correlation was found between BLyS and β2 microglobulin levels (p = 0.36). Serum concentrations of β2 microglobulin and C reactive protein and positive anti-SSB antibody results were associated with extraglandular involvement on univariate analysis (p<10−4, p = 0.003, and p = 0.004, respectively). Serum β2 microglobulin was also significantly increased in patients with extraglandular involvement without autoantibodies (mean (SD): 1.75 (0.7) v 1.39 (0.5) mg/l, p = 0.039). Multivariate analysis showed that extraglandular involvement was associated only with increased serum β2 microglobulin (p = 0.035, odds ratio = 2.78 (95% confidence interval, 1.07 to 7.22)). Among the 25 patients who had serial determinations of serum β2 microglobulin, the concentrations were increased in all those with disease flare and decreased in three following treatment. Serum BLyS, gamma globulin, IgG, and rheumatoid factor levels were not associated with features of systemic involvement. Conclusions: Serum β2 microglobulin and BLyS reflect B cell activation in different ways in pSS. Serum β2 microglobulin assessment could be helpful as an activity marker in pSS.</abstract>
<note type="author-notes">Correspondence to:
 Professor Xavier Mariette
 Service de Rhumatologie, Hôpital de Bicêtre, 78 rue du Général Leclerc, 94275 Le Kremlin Bicêtre, France; xavier.mariette@bct.ap-hop-paris.fr</note>
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<topic>SSA/SSB, Sjögren’s syndrome antigen A or B</topic>
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<genre>KWD</genre>
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<topic>BLyS</topic>
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