Yongquan Shi

This study tests whether upadacitinib, a newer pill, works as well as standard steroid injections for people hospitalized with severe ulcerative colitis. About 46 adults will take either upadacitinib or steroids for 3 months, with frequent checkups to track symptoms and side effe…

This study tests whether adding a probiotic (Saccharomyces boulardii) to a standard 4-drug antibiotic regimen helps clear H. pylori infection in people whose past treatment failed. About 1,248 adults will be randomly assigned to get either the probiotic plus antibiotics or antibi…

This study tests whether a medicine called ursodeoxycholic acid (UDCA) can reverse gastric intestinal metaplasia, a condition that raises stomach cancer risk. About 196 adults without H. pylori infection will take UDCA or a placebo daily for 6 months. Researchers will check if th…

This study tests whether a combination of thalidomide and glutamine can reduce bleeding caused by radiation damage to the intestines. About 150 adults with chronic radiation enteritis will be randomly assigned to receive the treatment. The main goal is to see if the treatment cut…

This study looks at whether exposure to tiny plastic particles (microplastics) is linked to stomach cancer and its early stages. Researchers will ask 450 adults with different stomach conditions to fill out a questionnaire about their microplastic exposure. The goal is to see if …