As mentioned above, infection with H. suis strain HS5cLP in mice induced a clear downregulation of Atp4a and Atp4b expression levels in the stomach at 9 weeks and 6 months pi, and such an effect was not observed in the HS5cLPΔggt infected animals, showing that H. suis GGT contributes to alterations in gastric acid secretion by parietal cells. Here, ATP4A is linked to infection.