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Digestive Diseases and Sciences

, Volume 64, Issue 1, pp 152–157 | Cite as

Elevated Tryptase in EoE Is an Independent Phenomenon Associated with Extra-Esophageal Symptoms

  • Geeta R. KuttyEmail author
  • Erinn Downs-Kelly
  • Hilda T. Crispin
  • Kathryn A. Peterson
Original Article

Abstract

Background

Eosinophilic esophagitis (EoE) is a chronic disease characterized histologically by > 15 eosinophils per high-power field (eos/hpf). Esophageal mucosal mast cells have been implicated in EoE pathogenesis. The association of atopy with EoE has been established but has not been correlated with levels of serum tryptase. The lack of concurrent atopy in some patients suggests the possibility that atopy may either be the related subtype of EoE or may be a sign of comorbidities. No study has looked at whether patients present with different phenotypes/comorbid disease when they have evidence of elevated serum tryptase. We hypothesized that these patients differ with respect to presentation and comorbidities with more refractory GI disease.

Aims

To examine whether elevations of serum tryptase associate with different, more severe clinical presentations in EoE patients which may be explained via mast cell activation.

Materials and Methods

Retrospective chart review identified 72 patients with EoE with results for serum tryptase between 2015 and 2016. Patients were classified as TryptaseHI (tryptase > 10.9 µg/l) and TryptaseLO (< 10.9 µg/l). Clinical characteristics and treatment response were compared using univariate analysis and multivariate regression between the groups.

Results

Out of 72 patients, 12 were tested as TryptaseHI (16.7%, 95% CI 8.1–25.3%). TryptaseHI was associated frequently with asthma (P = 0.0003), urticaria (P = 0.002), arthralgia (P = 0.005), sinusitis (P = 0.03), nausea/vomiting (P = 0.046), and eosinophilic gastrointestinal disease (P = 0.001). Asthma and arthralgia were found to be significantly associated with TryptaseHI (P = 0.0013, P = 0.0098, respectively). Mucosal eosinophil counts and tryptase levels were not correlated (R2 0.095, P = 0.77). Tryptase did not resolve with resolution of esophageal eosinophilia.

Conclusions

We found that EoE patients with elevated tryptase levels more commonly presented with asthma, urticaria, arthralgia, nausea/vomiting, sinusitis, and more distal eosinophilia. This indicates that atopy in EoE patients warrants further exploration. The lack of correlation between histologic remission and reduction of serum tryptase levels post-treatment suggests that mast cell activation may be an independent, yet associated disease. More study into this unique association is warranted.

Keywords

Eosinophilic esophagitis EoE Eosinophils Mast cells Atopy Serum tryptase Asthma Urticaria Arthralgia Sinusitis Nausea Vomiting Eosinophilic gastrointestinal disease EGID Mast cell activation 

Notes

Acknowledgments

Portions of this study have been presented in abstract form at the Annual Symposium of Digestive Disease Week (DDW) 2017, Chicago, IL, on May 6–9, 2017.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The authors confirm that due consideration was given to the protection of intellectual property associated with this work and that there are no impediments to publication, including the timing of publication, with respect to intellectual property. In doing so, the authors have followed the regulations of our institutions concerning intellectual property. The authors confirm that no aspect of the work covered in this manuscript has involved either experimental animals or human patients or required use of informed consent. This study was approved through the Utah Institutional Review Board (IRB #00061947).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Geeta R. Kutty
    • 1
    Email author
  • Erinn Downs-Kelly
    • 3
  • Hilda T. Crispin
    • 2
  • Kathryn A. Peterson
    • 1
  1. 1.Department of GastroenterologyUniversity of UtahSalt Lake CityUSA
  2. 2.Department of Internal MedicineUniversity of UtahSalt Lake CityUSA
  3. 3.Department of PathologyUniversity of UtahSalt Lake CityUSA

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