Exploring the Effects of Caltrate Supplement on the Chronic Course of Crohn's Disease Patients With Vitamin D Deficiency

Crohn's Disease, Vitamin D Deficiency, Vitamin D Supplement

Aims:Prospectively observe the effects of Caltrate supplementation on the chronic course of Crohn's disease patients, analyze whether the effect of Caltrate on CD patients is affected by factors such as disease site, disease activity, treatment, etc.Provide a certain theoretical basis for precision treatment for CD patients in the future. Design：It is a prospective cohort study. Investigators include a total of 60 participants with CD according to the inclusion and exclusion criteria, and divide them into two groups to assess their initial disease activity and detect related indicators. At the same time，Investigators detect the Vitamin D Gene gene polymorphisms in all participants.One group is given Caltrate 0.6g per day orally, and the control group do not intervene. After 12 months, re-evaluate the disease activity and retest the relevant indicators, and use statistical methods to analyze whether Caltrate supplementation treatment can increase the serum 25 (OH) D level of CD participants, improve the condition of CD participants,relationship with Vitamin D Gene Polymorphism，and analyze the effect of Caltrate on participants with CD is affected by factors such as disease site, disease activity, and treatment.

1. The research can be started only after approval by the Medical Ethics Committee of the Second Affiliated Hospital of Wenzhou Medical University. 2. According to the Consensus on Diagnosis and Treatment of Inflammatory Bowel Disease formulated by the Beijing Conference in 2018 as a standard, patients with clear diagnosis of CD are collected. Exclusion criteria included pregnancy, breastfeeding, liver and kidney dysfunction, concurrent autoimmune diseases, and use of antiepileptic drugs or drugs metabolized by liver cytochrome P450 enzymes. 3. Assess disease activity of CD participants based on the Simplified Crohn's disease Activity Score. 4. General information about participants with CD is collected. 5. Detection of VDR gene polymorphisms using Snapshot technology. 6. Serum C-reactive protein, erythrocyte sedimentation rate, white blood cells, albumin, creatinine, alanine aminotransferase, calcium and phosphorus levels are measured. 7. The level of serum 25 (OH) D of participants is detected. 8. Develop a treatment plan for participants. 9. Participants are divided into two groups, one group is given oral Caltrate 0.6g / d, and the other group did not intervene. 10. The above serum indicators are re-measured in the 12th month, and the condition of CD participants is also evaluated. 11. Follow-up for 12 months. By comparing the above indicators, observe that in the Han population: 1. Can Caltrate supplementation increase serum 25 (OH) D levels in patients with CD? 2. Can Caltrate supplementation improve the condition of patients with CD? 3. whether vitamin D gene polymorphisms affect the efficacy of Caltrate supplementation therapy? 4. Analyze whether the effect of Caltrate on CD patients is affected by factors such as disease site, disease activity, treatment, etc .. 12. Through statistical analysis, comprehensive analysis of the effectiveness and safety of Caltrate supplementation in Han patients with CD, and its relationship with vitamin D gene polymorphisms, providing a theoretical basis for further precise treatment intervention in inflammatory bowel disease.

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