Protocol summary
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Study aim
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Investigating the effect of crocin on metabolic indices, inflammatory biomarkers and oxidative stress factors in ulcerative colitis patients receiving crocin compared with the group receiving placebo before and after the study.
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Design
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A crossover clinical trial with placebo control group by parallel groups, double-blind, randomized, phase 3 on 60 patients. SPSS software was used for randomization.
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Settings and conduct
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Place of study: Porcine Hakim, Gastrointestinal and Liver Diseases Clinic, Isfahan; Study population: Adults with ulcerative colitis 18 to 65 years; Type of blinding: Double-blind including patients and researchers; Method of blinding: Through codes designed with SPSS by a third party
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Participants/Inclusion and exclusion criteria
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Inclusion criteria: Patients with ulcerative colitis proven through clinical diagnosis and previous colonoscopy results with mild-to-moderate colitis; positive Calprotectin; Adult patients from 18 years to 65 years; No use of other medicinal plants in the past 3 months; No allergy to saffron plant and its derivatives; Not taking new antidepressants and sleeping pills in the last 2 months; No use of new anti-inflammatory and antioxidant drugs in the last 3 months; Taking the usual medications prescribed by the doctor in the last 4 months. Exclusion criteria: Normal calprotectin ; Pregnancy or breastfeeding; In case of any side effects; Anticoagulant and warfarin use; A history of other underlying diseases and autoimmune diseases; alcohol consumption.
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Intervention groups
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Intervention group: recipient of mesalamine with 15 mg of crocin twice daily
Control group: receiving mesalamine with placebo containing starch twice a day
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Main outcome variables
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(calprotectin، NO،CRP، MPO،TNFα،IL-6،IL-1ß)؛(MDA،CAT، TAC, TOS,GSH)؛ (AMPK، SIRT-1، GLUT1، PKM2 )؛TG-CHOL-HDL-LDL؛CBCdiff؛Clinical symptoms;The fatty acid profile of RBC membranes;MCP-1;FBS;ALT,AST,ALP
General information
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Reason for update
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Changes to the study design and the addition of a measurable outcome variable
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Acronym
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IRCT registration information
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IRCT registration number:
IRCT20240831062917N1
Registration date:
2024-09-11, 1403/06/21
Registration timing:
prospective
Last update:
2026-10-28, 1405/08/06
Update count:
1
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Registration date
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2024-09-11, 1403/06/21
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Registrant information
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Recruitment status
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recruiting
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Funding source
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Expected recruitment start date
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2025-02-18, 1403/11/30
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Expected recruitment end date
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2026-12-21, 1405/09/30
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Actual recruitment start date
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empty
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Actual recruitment end date
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empty
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Trial completion date
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empty
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Scientific title
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Investigating the effect of crocin on metabolic indices, inflammatory biomarkers and oxidative stress factors in ulcerative colitis patients.
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Public title
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Investigating the effect of crocin in ulcerative colitis
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Purpose
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Treatment
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Inclusion/Exclusion criteria
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Inclusion criteria:
Patients with ulcerative colitis proven through clinical diagnosis and previous colonoscopy results with mild-to-moderate colitis
positive Calprotectin and receiving standard treatment of mesalamine
Adult patients from 18 years to 65 years.
No use of other medicinal plants in the past 3 months.
No allergy to saffron plant and its derivatives.
Not taking new antidepressants and sleeping pills in the last 2 months.
No use of new anti-inflammatory and antioxidant drugs in the last 3 months.
Taking the usual medications prescribed by the doctor in the last 4 months.
Exclusion criteria:
Normal calprotectin
Pregnancy or breastfeeding.
In case of any side effects.
Anticoagulant and warfarin use.
A history of other underlying diseases and autoimmune diseases.
alcohol consumption
Taking any anti-depressant, anti-inflammatory and new sleep medications in the last 2 months.
Consumption of new anti-inflammatory and antioxidant drugs in the last 3 months.
Change in commonly prescribed medications in the last 4 months.
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Age
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From 18 years old to 65 years old
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Gender
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Both
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Phase
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3
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Groups that have been masked
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- Participant
- Care provider
- Investigator
- Outcome assessor
- Data analyser
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Sample size
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Target sample size:
30
More than 1 sample in each individual
Number of samples in each individual:
4
According to the 2×2 crossover design, each participant will undergo two consecutive treatment periods, with a 3-week washout period between the two periods. In each period, two samples will be collected: one before the intervention (Baseline) and one after the intervention (Post-treatment). Therefore, a total of 4 samples will be collected from each individual (2 periods × 2 samples per period).
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Randomization (investigator's opinion)
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Randomized
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Randomization description
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30 patients with ulcerative colitis who are under standard treatment with mesalamine are selected. Randomization of samples is based on block randomization method. For random assignment with random numbers generated by SPSS software (use of random blocks with a volume of 6), each patient is assigned a code and then according to the treatment group assigned to the corresponding code, the patient is in one of the intervention groups to receive crocin or The control received a placebo.
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Blinding (investigator's opinion)
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Double blinded
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Blinding description
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In order to conduct this research in a double-blind manner, patients, researchers, clinical caregivers, outcome assessors, and data analysts are blinded by codes designed with SPSS by a third party (a person other than the researchers). Statistical software codes consist of Latin letters A and B along with numbers. The third party assigns one of the letters A and B included in the designed codes to the crocin group and the other to the placebo group. The codes are pasted on the cans containing crocin or placebo, and based on the code written on it, it is filled by the mentioned person and given to the researcher. Finally, without knowing the contents of the cans, the researcher randomly provides them to the patients.
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Placebo
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Used
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Assignment
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Crossover
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Other design features
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Ethics committees
1
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Ethics committee
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Approval date
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2024-07-31, 1403/05/10
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Ethics committee reference number
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IR.MUI.PHANUT.REC.1403.059
2
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Ethics committee
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Approval date
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2025-06-07, 1404/03/17
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Ethics committee reference number
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IR.MUI.PHANUT.REC.1404.027
Health conditions studied
1
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Description of health condition studied
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Ulcerative colitis
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ICD-10 code
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K51
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ICD-10 code description
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Ulcerative colitis
Primary outcomes
1
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Description
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Calprotectin
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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ELISA
2
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Description
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Nitric oxide (NO)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
3
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Description
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Myeloperoxidase (MPO)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
4
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Description
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Quantitative CRP
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Turbidimetry
5
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Description
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Catalase
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
6
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Description
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Malondialdehyde (MDA)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
7
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Description
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Total antioxidant capacity (TAC)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
8
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Description
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AMPK gen expression
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Real-time PCR
9
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Description
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SIRT-1 gen expression
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Real-time PCR
10
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Description
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GLUT1 gen expression
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Real-time PCR
11
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Description
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PKM2 gen expression
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Real-time PCR
12
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Description
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TNFα
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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ELISA
13
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Description
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IL-6
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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ELISA
14
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Description
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IL-1ß
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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ELISA
15
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Description
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Ulcerative colitis disease activity index
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Truelove and Witts' classification
16
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Description
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Cell Blood Count. diff.
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Hematology cell counter
Secondary outcomes
1
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Description
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Quality of life in ulcerative colitis
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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32-question IBD Quality of life questionnaire ( IBD Q-32 )
2
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Description
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Triglycerides (TG)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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spectrophotometry
3
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Description
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Total cholesterol
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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spectrophotometry
4
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Description
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HDL-Cholesterols
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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spectrophotometry
5
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Description
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LDL-Cholesterol
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
6
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Description
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The fatty acid profile of erythrocyte membranes
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Gas Chromatography
7
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Description
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Monocyte Chemoattractant Protein-1 (MCP-1)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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ELISA
8
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Description
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Total Oxidant Capacity (TOS)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
9
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Description
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Glutathione(GSH)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
10
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Description
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Fasting Blood Sugar (FBS)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Spectrophotometry
11
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Description
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Alanine Aminotransferase (ALT)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Enzymatic kit
12
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Description
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Aspartate Aminotransferase (AST)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Enzymatic kit
13
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Description
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Alkaline phosphatase (ALP)
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Timepoint
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Before the intervention and 12 weeks after the intervention
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Method of measurement
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Enzymatic kit
Intervention groups
1
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Description
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Intervention group: Patients receiving the standard treatment of mesalamine plus two daily capsules of crocin (Samisaz company) for 12 weeks, orally, each containing 15 mg of crocin supplement.
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Category
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Treatment - Drugs
2
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Description
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Control group: Patients receiving standard treatment of mesalamine plus two placebo capsules containing starch daily for 12 weeks. The placebo will be completely similar to the crocin supplement in terms of shape and appearance of the package. Following a 21-day (3-week) wash-out period during which crocin and placebo are discontinued, the treatments are crossed over: the group previously receiving crocin is administered placebo, and the group previously receiving placebo is administered crocin.
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Category
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Placebo
1
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Sponsor
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Grant name
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Grant code / Reference number
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Is the source of funding the same sponsor organization/entity?
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Yes
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Title of funding source
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Esfahan University of Medical Sciences
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Proportion provided by this source
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100
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Public or private sector
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Public
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Domestic or foreign origin
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Domestic
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Category of foreign source of funding
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empty
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Country of origin
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Type of organization providing the funding
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Academic
Sharing plan
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Deidentified Individual Participant Data Set (IPD)
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Undecided - It is not yet known if there will be a plan to make this available
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Study Protocol
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Undecided - It is not yet known if there will be a plan to make this available
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Statistical Analysis Plan
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Not applicable
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Informed Consent Form
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Undecided - It is not yet known if there will be a plan to make this available
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Clinical Study Report
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Undecided - It is not yet known if there will be a plan to make this available
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Analytic Code
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Not applicable
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Data Dictionary
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Not applicable