The effects of IL-8, IL- 6 and IL-1 on the risk of celiac disease: a bayesian regression analysis

Present study aimed to evaluate association between serum levels of interleukin (IL)-1, IL-6, IL-8, IL-15 genes and interferon (IFN)-? and the risk of celiac disease (CD).

The role of serum cytokine levels in the pathophysiology of CD is still an open field to be explored.

This case-control study was performed on 110 patients with CD and 46 healthy controls referred to Taleghani Hospital, Tehran, Iran. Expression levels of IL-1, IL-6, IL-8, IL-15 and IFN-? were assessed by enzyme-linked immunosorbent assay (ELISA) kits.

The Bayesian intervention odds ratio (OR) and Highest Posterior Density (HPD) interval were 1.133 (95% credible interval 1.018- 1.269), 0.947 (95% credible interval 0.898 - 0.996) and 1.004 (95% credible interval 1.001- 1.009) for IL-1, IL-6, and IL-8 respectively.

Serum levels of IL-15 and IFN-? have no effect on the risk of CD and its symptoms, but given the OR and the HPD interval obtained for serum levels of IL-1, IL-6 and IL-8, one unit increase in IL-1 serum, the risk of CD 1.13 times more likely and one unit increase in IL-6 serum reduces risk of CD by 15% and about IL-8, the risk of CD increases 0.004 times with a unit increase in IL-8 serum.