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Objective. The SARS-CoV-2 pandemic has spread across the world causing a dramatic number of infections and deaths. No data are available about the effects of an infection in patients affected by celiac disease (CD) in terms of the development of related symptoms and antibodies. We aimed to investigate the impact of the SARS-CoV-2 pandemic in celiac patients. Design. During a lockdown, the celiac patients living in the Milan area were contacted and interviewed about the development of COVID-19 symptoms as well as adherence to an anti-virus lifestyle and a gluten-free diet (GFD). They were also given a stress questionnaire to fill in. The development of anti-SARS-CoV-2 IgG and IgA (anti-RBD and N proteins) and the expression of the duodenal ACE2 receptor were investigated. When available, duodenal histology, anti-tissue transglutaminase IgA (tTGA), presence of immunologic comorbidities and adherence to the GFD were analysed as possible risk factors. Results. 362 celiac patients have been interviewed and 42 (11%) presented with COVID-19 symptoms. The presence of symptoms was not influenced by tTGA positivity, presence of duodenal atrophy or adherence to GFD. 37% of the symptomatic patients presented anti-SARS-CoV-2 immunoglobulins (Ig). Globally, 18% of celiac patients showed anti-SARS-CoV-2 Ig vs 25% of the non-celiac control (p=0.18). The values of anti-RBD IgG/IgA and anti-N IgG did not differ from the non-celiac controls. Celiac patients had a significant lower level of anti-N IgA. The ACE2 receptor was detected in the non-atrophic duodenal mucosa of celiac patients; atrophy was associated with a lower expression of the ACE2 receptor. Conclusion. CD patients have an anti-SARS-CoV-2 Ig positiveness and profile similar to non-celiac controls, except for anti-N IgA. The main celiac parameters and adherence to the GFD do not influence the development of a different Ig profile.
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10.1101/2020.12.15.20248039
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document_parses/pdf_json/232a8e3ffeab1b5e52867953ed770e970a79771b.json
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IMPACT OF A SARS-COV-2 INFECTION IN PATIENTS WITH CELIAC DISEASE
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