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Vitamin D Supplement clinical trials

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NCT ID: NCT05649462 Completed - Ulcerative Colitis Clinical Trials

Effect of Vitamin D Supplementation on Vedolizumab Response in Patients With Ulcerative Colitis

Start date: January 1, 2020
Phase:
Study type: Observational

It is uncertain whether vitD3 supplementation is beneficial for the remission of ulcerative colitis (UC). The effects of vitD3 supplements on the efficacy of vidrecizumab in Chinese UC patients were retrospectively analyzed. Methods: Patients with moderate to severe UC were recorded. These patients were initially treated with VDZ. VitD3 supplementation was defined as 400IU/d vitD3 supplementation during the first infusion of VDZ and continued throughout the follow-up period. Disease activity was assessed using the modified Mayo score.

NCT ID: NCT05106712 Not yet recruiting - Clinical trials for Vitamin D Deficiency

Vitamin D Supplementation and Improvement of PCOS Therapy and IVF Outcomes in Infertile Saudi Women

Start date: November 1, 2021
Phase: N/A
Study type: Interventional

This randomized double-blinded-controlled clinical trial consists of two protocols as follow: protocol 1: evaluation of the therapeutic effects of Vitamin D3 supplement when given alone and in combination with an ovulation-inducing agent (e.g., Clomiphene citrate or Letrozole) on ovarian functional status and hormonal and metabolic features of PCOS-Vitamin D-deficient infertile Saudi women; and protocol 2: evaluation of the effectiveness of Vitamin D3 supplement versus placebo on the clinical pregnancy rate, fertilization implantation rate, live birth rate, and other outcome parameters following in-vitro fertilization (IVF) application in these PCOS-Vitamin D-deficient infertile patients.

NCT ID: NCT04606017 Completed - Crohn Disease Clinical Trials

Effect of Vitamin D Supplementation on Infliximab Response in Patients With Crohn's Disease

Start date: January 1, 2014
Phase:
Study type: Observational

Background: It remains uncertain whether vitD3 supplementation is beneficial for remission of Crohn's disease (CD). The influence of vitD3 supplementation on Infliximab (IFX) efficacy was retrospectively analyzed in Chinese CD patients. Methods: Patients with moderate-to-severe CD, who were bio-naïve and prescribed with IFX treatment for at least 54 weeks were recorded. VitD3 supplementation was defined as patients additionally took oral vitD3 (125 IU/d) within 3 days after the first infusion and persisted in the whole follow-up period. Disease activity was assessed using Harvey-Bradshaw Index (HBI). Serum cytokine profiles were quantitatively analyzed in a subset of all patients at baseline and 54-week after intervention.

NCT ID: NCT04309058 Not yet recruiting - Ulcerative Colitis Clinical Trials

Observation of the Effect of Vitamin D Supplementation on Chronic Course of Patients With Ulcerative Colitis Based on Vitamin D Receptor Fok I Gene Polymorphism

Start date: March 2020
Phase: Early Phase 1
Study type: Interventional

Aims:Prospectively observe the effects of Vitamin D drops supplementation on the chronic course of ulcerative colitis patients, analyze whether the effect of Vitamin D drops on UC patients is affected by factors such as disease site, disease activity, treatment, etc.Exploring the relationship between Fok I gene polymorphism and the efficacy of vitamin D supplementation. Provide a certain theoretical basis for "precision treatment" for UC patients in the future. Design:It is a prospective cohort study. Investigators include a total of 100 participants with UC 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 Fok I gene polymorphism in all participants.One group is given Vitamin D drops 400IU per day orally, and the control group do not intervene. Participants' disease activity is assessed at baseline and related indicators are determined. The disease activity is re-evaluated in the 3rd, 6th, 9th, and 12th months, and the serum indexes are re-evaluated.Investigators use statistical methods to analyze whether Vitamin D drops supplementation treatment can increase the serum 25 (OH) D level of UC participants, improve the condition of UC participants,relationship with Fok I gene polymorphism,and analyze the effects of Vitamin D drops on participants with UC is affected by factors such as disease site, disease activity, and treatment.

NCT ID: NCT04308850 Not yet recruiting - Crohn's Disease Clinical Trials

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

Start date: October 2020
Phase: Early Phase 1
Study type: Interventional

Aims:Prospectively observe the effects of Vitamin D drops supplementation on the chronic course of Crohn's disease patients, analyze whether the effect of Vitamin D drops on CD patients is affected by factors such as disease site, disease activity, treatment, etc.Exploring the relationship between Fok I gene polymorphism and the efficacy of vitamin D supplementation. 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 Fok I gene polymorphism in all participants.One group is given Vitamin D drops 400IU per day orally, and the control group do not intervene. Participants' disease activity is assessed at baseline and related indicators are determined. The disease activity is re-evaluated at 2, 6, 14, 22, 30, and 38 weeks, and the serum indexes are re-evaluated.Investigators use statistical methods to analyze whether Vitamin D drops supplementation treatment can increase the serum 25 (OH) D level of CD participants who are treated with infliximab, improve the condition of CD participants,relationship with Fok I gene polymorphism,and analyze the effects of Vitamin D drops on participants with CD is affected by factors such as disease site, disease activity, and treatment.

NCT ID: NCT04276649 Completed - Ulcerative Colitis Clinical Trials

A Retrospective Analysis: the Influence of Caltrate Supplement on the Effect of Mesalazine in Ulcerative Colitis

Start date: January 1, 2015
Phase:
Study type: Observational

Aims:Retrospectively observe the effects of Caltrate supplementation on the clinical effect of mesalazine in patients with ulcerative colitis. Design: From January 2015 to December 2020, through retrieving the clinical database of the Second Affiliated Hospital of Wenzhou Medical University, patients with active UC who accepted mesalazine treatment were enrolled. According to whether Caltrate was supplemented at the same time, the patients were divided into supplementary group and non-supplementary group. The modified Mayo score and several laboratory indicators were compared between the two groups.

NCT ID: NCT04276636 Not yet recruiting - Crohn's Disease Clinical Trials

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

Start date: October 2020
Phase: Early Phase 1
Study type: Interventional

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.