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Study of the Validity of Neutrophil CD64 and Serum Procalcitonin as Diagnostic Markers to Discriminate Infection from Disease Activity in Patients with Systemic Lupus Erythematosus

Received: 21 April 2015     Accepted: 27 April 2015     Published: 13 May 2015
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Abstract

Introduction: In addition to the complexity of the clinical presentation of both infections and disease activity in systemic lupus erythematosus (SLE) patients, the difficulty in making the therapeutic decision require investigations that should be of diagnostic value. Neutrophil CD64 is up regulated within few hours in patients with infection. Similarly, serum procalcitonin (PCT) levels increase rapidly following bacterial infection. Objective: The aim of this work is to study the usefulness of neutrophil CD64 expression and serum PCT as diagnostic markers to discriminate infection from disease activity in patients with systemic lupus erythematosus. Methods: This study was carried on 20 healthy females as controls (group I) and 55 female patients with SLE. Patients were distributed as following; 20 SLE patients without activity or infections (group II), 20 SLE patients with lupus activity (group III), and 15 SLE patients with infection (group IV). CBC, ANA, Anti-ds DNA, C3 and C4 were measured in all population. Serum PCT was measured by ELFA and neutrophil CD64 expression was done by flowcytometry. Results: Neutrophil CD64 expression and serum PCT levels were increased significantly in SLE patients with infection compared to those with disease activity. We demonstrated significant correlations between CD64 and markers of both activity and infection, while serum PCT levels were significantly correlated with markers of infection. The area under the ROC curves for detection of infection (AUC; 95% CI) for neutrophil CD64 expression and serum PCT were (0.90; 0.79-1.01) and (0.99; 0.95-1.01), respectively. Conclusion: Our findings can prove that both neutrophil CD64 and serum PCT are reliable markers to discriminate infection from disease activity in SLE patients. Serum PCT was more accurate than neutrophil CD64 expression.

Published in American Journal of Clinical and Experimental Medicine (Volume 3, Issue 3)
DOI 10.11648/j.ajcem.20150303.17
Page(s) 110-117
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Systemic Lupus Erythematosus, Lupus Activity, Infection, CD64, Procalcitonin

References
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    Ahmed Ragheb, Ahmed A. Sonbol. (2015). Study of the Validity of Neutrophil CD64 and Serum Procalcitonin as Diagnostic Markers to Discriminate Infection from Disease Activity in Patients with Systemic Lupus Erythematosus. American Journal of Clinical and Experimental Medicine, 3(3), 110-117. https://doi.org/10.11648/j.ajcem.20150303.17

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    ACS Style

    Ahmed Ragheb; Ahmed A. Sonbol. Study of the Validity of Neutrophil CD64 and Serum Procalcitonin as Diagnostic Markers to Discriminate Infection from Disease Activity in Patients with Systemic Lupus Erythematosus. Am. J. Clin. Exp. Med. 2015, 3(3), 110-117. doi: 10.11648/j.ajcem.20150303.17

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    AMA Style

    Ahmed Ragheb, Ahmed A. Sonbol. Study of the Validity of Neutrophil CD64 and Serum Procalcitonin as Diagnostic Markers to Discriminate Infection from Disease Activity in Patients with Systemic Lupus Erythematosus. Am J Clin Exp Med. 2015;3(3):110-117. doi: 10.11648/j.ajcem.20150303.17

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  • @article{10.11648/j.ajcem.20150303.17,
      author = {Ahmed Ragheb and Ahmed A. Sonbol},
      title = {Study of the Validity of Neutrophil CD64 and Serum Procalcitonin as Diagnostic Markers to Discriminate Infection from Disease Activity in Patients with Systemic Lupus Erythematosus},
      journal = {American Journal of Clinical and Experimental Medicine},
      volume = {3},
      number = {3},
      pages = {110-117},
      doi = {10.11648/j.ajcem.20150303.17},
      url = {https://doi.org/10.11648/j.ajcem.20150303.17},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajcem.20150303.17},
      abstract = {Introduction: In addition to the complexity of the clinical presentation of both infections and disease activity in systemic lupus erythematosus (SLE) patients, the difficulty in making the therapeutic decision require investigations that should be of diagnostic value. Neutrophil CD64 is up regulated within few hours in patients with infection. Similarly, serum procalcitonin (PCT) levels increase rapidly following bacterial infection. Objective: The aim of this work is to study the usefulness of neutrophil CD64 expression and serum PCT as diagnostic markers to discriminate infection from disease activity in patients with systemic lupus erythematosus. Methods: This study was carried on 20 healthy females as controls (group I) and 55 female patients with SLE. Patients were distributed as following; 20 SLE patients without activity or infections (group II), 20 SLE patients with lupus activity (group III), and 15 SLE patients with infection (group IV). CBC, ANA, Anti-ds DNA, C3 and C4 were measured in all population. Serum PCT was measured by ELFA and neutrophil CD64 expression was done by flowcytometry. Results: Neutrophil CD64 expression and serum PCT levels were increased significantly in SLE patients with infection compared to those with disease activity. We demonstrated significant correlations between CD64 and markers of both activity and infection, while serum PCT levels were significantly correlated with markers of infection. The area under the ROC curves for detection of infection (AUC; 95% CI) for neutrophil CD64 expression and serum PCT were (0.90; 0.79-1.01) and (0.99; 0.95-1.01), respectively. Conclusion: Our findings can prove that both neutrophil CD64 and serum PCT are reliable markers to discriminate infection from disease activity in SLE patients. Serum PCT was more accurate than neutrophil CD64 expression.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Study of the Validity of Neutrophil CD64 and Serum Procalcitonin as Diagnostic Markers to Discriminate Infection from Disease Activity in Patients with Systemic Lupus Erythematosus
    AU  - Ahmed Ragheb
    AU  - Ahmed A. Sonbol
    Y1  - 2015/05/13
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ajcem.20150303.17
    DO  - 10.11648/j.ajcem.20150303.17
    T2  - American Journal of Clinical and Experimental Medicine
    JF  - American Journal of Clinical and Experimental Medicine
    JO  - American Journal of Clinical and Experimental Medicine
    SP  - 110
    EP  - 117
    PB  - Science Publishing Group
    SN  - 2330-8133
    UR  - https://doi.org/10.11648/j.ajcem.20150303.17
    AB  - Introduction: In addition to the complexity of the clinical presentation of both infections and disease activity in systemic lupus erythematosus (SLE) patients, the difficulty in making the therapeutic decision require investigations that should be of diagnostic value. Neutrophil CD64 is up regulated within few hours in patients with infection. Similarly, serum procalcitonin (PCT) levels increase rapidly following bacterial infection. Objective: The aim of this work is to study the usefulness of neutrophil CD64 expression and serum PCT as diagnostic markers to discriminate infection from disease activity in patients with systemic lupus erythematosus. Methods: This study was carried on 20 healthy females as controls (group I) and 55 female patients with SLE. Patients were distributed as following; 20 SLE patients without activity or infections (group II), 20 SLE patients with lupus activity (group III), and 15 SLE patients with infection (group IV). CBC, ANA, Anti-ds DNA, C3 and C4 were measured in all population. Serum PCT was measured by ELFA and neutrophil CD64 expression was done by flowcytometry. Results: Neutrophil CD64 expression and serum PCT levels were increased significantly in SLE patients with infection compared to those with disease activity. We demonstrated significant correlations between CD64 and markers of both activity and infection, while serum PCT levels were significantly correlated with markers of infection. The area under the ROC curves for detection of infection (AUC; 95% CI) for neutrophil CD64 expression and serum PCT were (0.90; 0.79-1.01) and (0.99; 0.95-1.01), respectively. Conclusion: Our findings can prove that both neutrophil CD64 and serum PCT are reliable markers to discriminate infection from disease activity in SLE patients. Serum PCT was more accurate than neutrophil CD64 expression.
    VL  - 3
    IS  - 3
    ER  - 

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Author Information
  • Internal Medicine Department, Faculty of Medicine, Menoufia University, Shebin Elkom, Menoufia, Egypt

  • Clinical Pathology Department, Faculty of Medicine, Menoufia University, Shebin Elkom, Menoufia, Egypt

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