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Giudici F, Maggi L, Santi R, et al. Perianal Crohn's disease and hidradenitis suppurativa: a possible common immunological scenario. Clin Mol Allergy. 2015;13(1):12doi: 10.1186/s12948-015-0018-8.
Giudici, F., Maggi, L., Santi, R., Cosmi, L., Annunziato, F., Nesi, G., Barra, G., Bassotti, G., De Palma, R., & Tonelli, F. (2015). Perianal Crohn's disease and hidradenitis suppurativa: a possible common immunological scenario. Clinical and molecular allergy : CMA, 13(1), 12. https://doi.org/10.1186/s12948-015-0018-8
Giudici, Francesco, et al. "Perianal Crohn's disease and hidradenitis suppurativa: a possible common immunological scenario." Clinical and molecular allergy : CMA vol. 13,1 (2015): 12. doi: https://doi.org/10.1186/s12948-015-0018-8
Giudici F, Maggi L, Santi R, Cosmi L, Annunziato F, Nesi G, Barra G, Bassotti G, De Palma R, Tonelli F. Perianal Crohn's disease and hidradenitis suppurativa: a possible common immunological scenario. Clin Mol Allergy. 2015 Jul 22;13(1):12. doi: 10.1186/s12948-015-0018-8. eCollection 2015. PMID: 26203298; PMCID: PMC4511252.
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Clin Mol Allergy. 2015 Jul 22;13(1):12. doi: 10.1186/s12948-015-0018-8. eCollection 2015.

Perianal Crohn's disease and hidradenitis suppurativa: a possible common immunological scenario.

Clinical and molecular allergy : CMA

Francesco Giudici, Laura Maggi, Raffaella Santi, Lorenzo Cosmi, Francesco Annunziato, Gabriella Nesi, Giusi Barra, Gabrio Bassotti, Raffaele De Palma, Francesco Tonelli

Affiliations

  1. Department of Surgery and Translational Medicine, University of Florence, Largo Brambilla 3, 50139 Florence, Italy.
  2. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.
  3. Department of Clinical and Experimental Medicine, Second University of Naples, Naples, Italy.
  4. Department of Medicine, University of Perugia, Perugia, Italy.

PMID: 26203298 PMCID: PMC4511252 DOI: 10.1186/s12948-015-0018-8

Abstract

BACKGROUND: Crohn's disease (CD) and Hidradenitis suppurativa (HS) are both chronic inflammatory diseases. The pathogenesis of these diseases is multifactorial, due to the interaction of genetic and environmental factors leading to a deregulated local immune response where T lymphocytes play a major role. To the best of our knowledge, no previous study has clarified whether the pathogenetic mechanism of perianal CD and HS is the same. We therefore analyzed the cellular expression pattern and the cytokine repertoire in three patients suffering from both perianal CD and HS.

METHODS: We evaluated three patients affected by concurrent HS and CD with fistulizing perianal disease. Surgical specimens have been fixed and embedded in paraffin prior to sectioning for histological examination. Inflammatory tissue curettages have been recovered during intervention from perianal fistulas and HS lesions in order to analyze the phenotypic and functional characteristics of infiltrating T cells. In particular we evaluated T cells, by flow cytometry, for cytokine production profile and expression of surface markers. Moreover, analysis of the T cell repertoire was performed by means of spectratyping, in only one patient.

RESULTS: A higher frequency of CD4+ CD161+ T lymphocytes has been detected in CD fistulas and in HS lesions than in peripheral blood (PB) samples. In the patient in whom we derived enough cells from the three sources, we found higher frequency of CD4+ IL-17- producing cells in HS lesion and fistula lesion compared to PB. It is noteworthy that the same clonotypes were expanded in this patient in T cells derived from both HS lesion and fistula lesion.

CONCLUSION: The presence of numerous CD4+ CD161+ lymphocytes in fistula and HS lesion curettages suggests that these cells may play a pathogenic role, and candidates CD161 as a possible biological target for medical treatment.

Keywords: Crohn’s disease; Hidradenitis suppurativa; T helper lymphocytes

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