Journal of Molecular Histology

, Volume 44, Issue 4, pp 447–454 | Cite as

Salivary gland expression level of IκBα regulatory protein in Sjögren’s syndrome

  • Margherita Sisto
  • Sabrina Lisi
  • Dario Domenico Lofrumento
  • Giuseppe Ingravallo
  • Raffaella De Lucro
  • Massimo D’Amore
Original Paper


Diagnosis and therapeutic strategies in Sjögren’s syndrome (SS) might greatly benefit of the present multidisciplinary approach to studying the molecular pathogenesis of the disease. A deregulated inflammatory response has been described in the SS. The research in the last years sheds light on the importance of the NF-κB pathway regulating the pro-inflammatory cytokine production and leukocyte recruitment. These are important contributors to the inflammatory response during the development of SS. In this study we examine the expression of the NF-κB inhibitory protein termed IκBα in salivary glands epithelial cells (SGEC) comparing it with SGEC from healthy controls, to test the hypothesis that an altered expression of IκBα occurs in SGEC from SS biopsies. Real-Time PCR, western blot and immunohistochemistry demonstrated that the expression level of IκBα was significantly lower in SS with respect to healthy controls leading to an increased NF-κB activity. Our results suggest that the analysis of IκBα expression at salivary gland epithelial cell level could be a potential new hallmark of SS progression and sustain a rationale to more deeply investigate the therapeutic potential of specific NF-κB inhibitors in SS.


NF-κB Sjögren’s syndrome IκBα Inflammation Autoimmunity 



We are grateful to M.V.C. Pragnell, B.A., for critical reading of the manuscript.


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Margherita Sisto
    • 1
  • Sabrina Lisi
    • 1
  • Dario Domenico Lofrumento
    • 2
  • Giuseppe Ingravallo
    • 3
  • Raffaella De Lucro
    • 1
  • Massimo D’Amore
    • 4
  1. 1.Laboratory of Cell Biology, Section of Human Anatomy and Histology, Department of Basic Medical Sciences, Neurosciences and Sense OrgansUniversity of Bari Medical SchoolBariItaly
  2. 2.Department of Biological and Environmental Sciences and TechnologiesUniversity of SalentoLecceItaly
  3. 3.Department of PathologyUniversity of Bari Medical SchoolBariItaly
  4. 4.Section of Rheumatology, Department of Internal Medicine and Public MedicineUniversity of Bari Medical SchoolBariItaly

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