Clinical trials

The goal of this clinical trial is to learn comparative effectiveness and safety of Upadacitinib vs Corticosteroids as First-Line Therapy for Acute Severe Ulcerative Colitis. The main questions it aims to answer are: 1. Whether upadacitinib can effectively induce remission in acute severe ulcerative colitis with an efficacy non-inferior to that of corticosteroids. 2. What adverse reactions may occur with upadacitinib in the treatment of acute severe ulcerative colitis? Researchers will compare upadacitinib with corticosteroids to evaluate the efficacy of upadacitinib in the treatment of acute severe ulcerative colitis.Participants will: 1. Upadacitinib group: Upadacitinib extended-release tablets 45 mg once daily for 8 weeks, then adjusted to 30 mg once daily. 2. Corticosteroid group: Methylprednisolone for injection 60 mg/day. If clinical response is achieved, switch to oral prednisone acetate tablets after 5 days (calculated at 0.75 mg/kg/day), followed by a weekly prednisone taper of 5 mg. When the dose is reduced to 20 mg, taper by 2.5 mg weekly until discontinued, with mesalazine 4 g/day as maintenance therapy. 3. Take drug Upadacitinib or Corticosteroid every day for 3 months 4. Visit the clinic once every 2 weeks for checkups and tests 5. Record the patient's bowel movements and the presence of symptoms such as abdominal pain, while performing colonoscopy, ultrasound examination, and blood tests at the specified time points.

The objective of this clinical trial is to explore the correlation between the level of microplastic exposure and the risk of gastric mucosal carcinogenesis, and to evaluate the strength of its effect as an independent risk factor. The main questions it aims to answer include: Does the level of microplastic exposure increase the risk of gastric mucosal carcinogenesis? Can the correlation between the level of microplastic exposure and gastric mucosal carcinogenesis, as well as the sources of high - risk microplastic exposure, be explored through a questionnaire on external microplastic exposure? Researchers will complete a design structured questionnaire and ask participants to fill it out carefully and truthfully to determine whether the level of microplastic exposure increases the risk of gastric mucosal carcinogenesis.

At present, there is still a lack of standard and effective treatment strategies and procedures for radiation intestinal injury. Studies have shown that thalidomide can effectively treat refractory gastrointestinal bleeding caused by vascular malformation. Therefore, The investigators designed a single-center, open-label, randomized controlled study to evaluate the efficacy and safety of thalidomide combined with glutamine in the treatment of radiation intestinal injury.

The goal of this clinical trial is to investigate the efficacy of ursodeoxycholic acid in treating gastric intestinal metaplasia in Helicobacter pylori-negative adults. It will also learn about the safety of ursodeoxycholic acid. The main questions it aims to answer are: Does ursodeoxycholic acid promote the regression of IM in individuals without Helicobacter pylori infection? What medical problems do participants experience when taking ursodeoxycholic acid? Researchers will compare ursodeoxycholic acid to a placebo (a look-alike substance that contains no drug) to see if ursodeoxycholic acid is effective in treating gastric intestinal metaplasia. Participants will: Take ursodeoxycholic acid or a placebo every day for 6 months. Visit the clinic once every 4 weeks for checkups and tests.

This study aims at evaluating efficacy and safety of Saccharomyces boulardii combined with bismuth-containing quadruple Therapy versus bismuth-containing quadruple Therapy(bismuth#esomeprazole#tetracycline and furazolidone) in H. pylori rescue therapy. It is hypothesized that Saccharomyces boulardii combined with bismuth-containing quadruple Therapy is superior to bismuth-containing quadruple Therapy. Patients with confirmed failure of H. pylori eradication will be randomized to one of the treatments described above. At week 6 follow-up visits, a urea breath test#rapid urease test or helicobacter pylori stool antigen test will be performed to confirm eradication.

This study aims to evaluate the efficacy of vonoprazan combined with different antibiotics in dual therapy for Helicobacter pylori eradication treatment. Newly infected patients were randomly assigned to four groups: amoxicillin dual therapy, tetracycline dual therapy, minocycline dual therapy, and bismuth quadruple therapy. At the follow - up visit in the 6th week, urea breath test, rapid urease test, or Helicobacter pylori fecal antigen test will be conducted to confirm eradication.

The goal of this clinical trial is to investigate the efficacy and safety of Weifuchun tablet in treating gastric intestinal metaplasia in Helicobacter pylori-negative adults. The main questions it aims to answer are: Does Weifuchun tablet promote the regression of gastric intestinal metaplasia in individuals without Helicobacter pylori infection? What medical problems do participants experience when taking Weifuchun tablet? Researchers will compare the effectiveness of Weifuchun tablet in treating gastric intestinal metaplasia with that of folic acid, as suggested by the Chinese consensus on management of gastric epithelial precancerous conditions and lesions (2020). Participants will: Take Weifuchun tablets or folic acid every day for 6 months. Visit the clinic once every 4 weeks for checkups and tests.