- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03421184
Dietary Phytoestrogens as Risk Factors for Systemic Lupus Erythematosus (ISOLED)
Dietary Phytoestrogens in Blood and Urine of Female Patient With Acute Systemic Lupus Erythematosus
Study Overview
Status
Intervention / Treatment
Detailed Description
SLE is a disease occurring in 90% of the cases in pre-menopausal women. The causing factors are largely unknown even though genetic and environmental factors have already been identified. Estrogens, on one side, have been shown to negatively influence the incidence and severity of the disease while testosterone and progesterone on the other side are thought to be protective. Endocrine disruptors can potentially influence the occurrence and severity of the disease. Among these disruptors, soy isoflavones which are ubiquitous in modern processed food are known to be estrogenic and anti-androgenic. Their depleting effect on luteinizing hormone (LH) secretion can also lead to progesterone plasma level impairments. For these reasons, estrogenic isoflavones, appear as potential environmental risk factors for SLE and its flares. Although some data exist in transgenic rodent, there is actually no clinical data in young women.
The study is an observational, monocentric, preliminary study aiming at determining if estrogenic isoflavones can be risk factors for SLE. No treatment is planned. The intervention will be the collection of extra blood and urine samples on SLE subjects and on autoimmune and healthy counterparts.
Consumers are unintentionally exposed to estrogenic isoflavones through their diet. A dietary habit enquiry and a 48h dietary recall (based on pharmacokinetics of soy-isoflavones) will be proposed to the included subjects. Urine and blood samples collected during a clinical visit performed 7 days after the onset of previous menses will be analyzed for soy isoflavones, metabolites and for enterolactone both free and conjugated. Free estradiol will be assayed as a potential confounding risk factor.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Pessac, France
- CHU de Bordeaux - service de médecine interne
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
Group : Systemic Lupus Erythematosus :
- Premenopausal women over 18
- with acute LEAD flare
- having given informed consent
- and being covered by social insurance.
Group : Autoimmune diseases :
- Premenopausal women of matching age with other autoimmune disease,
- having given informed consent
- and being covered by social insurance.
Healthy controls :
- Premenopausal women over 18,
- having given informed consent,
- and being covered by social insurance.
Exclusion Criteria:
Group Systemic Lupus Erythematosus and group autoimmune diseases
- Human Immunodeficiency virus (HIV), hepatitis C virus (HCV) or hepatitis C virus (HBV) sero-positivity;
- pregnant or lactating women;
- menopausal women;
- patient in remission of quiescent phase of her pathology;
Healthy controls :
- HIV, HCV or HBV sero-positivity;
- pregnant or lactating women;
- menopausal women.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Patient with Systemic Lupus Erythematosus
30 women with SLE
|
25 ml whole blood for Peripheral blood mononuclear cell (PBMC) and monocytes isolation
10 ml
dietary habit enquiry and a 48h dietary
lock of hair
|
Active Comparator: Patients with other autoimmune diseases
20 patients with rheumatoid arthritis, 20 patients with autoimmune thrombocytopenia
|
25 ml whole blood for Peripheral blood mononuclear cell (PBMC) and monocytes isolation
10 ml
dietary habit enquiry and a 48h dietary
lock of hair
|
Active Comparator: Healthy control
30 healthy control women
|
25 ml whole blood for Peripheral blood mononuclear cell (PBMC) and monocytes isolation
10 ml
dietary habit enquiry and a 48h dietary
lock of hair
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Quantification of different isoflavones and enterolactone
Time Frame: At baseline (day 0)
|
in the blood and urine of patients and healthy controls
|
At baseline (day 0)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Quantification of free estradiol concentrations
Time Frame: At baseline (day 0)
|
in the blood and urine of patients and healthy controls
|
At baseline (day 0)
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Jean-François VIALLARD, Prof, CHU Bordeaux
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Immune System Diseases
- Autoimmune Diseases
- Hematologic Diseases
- Hemorrhage
- Hemorrhagic Disorders
- Connective Tissue Diseases
- Blood Coagulation Disorders
- Skin Manifestations
- Blood Platelet Disorders
- Thrombotic Microangiopathies
- Purpura, Thrombocytopenic
- Purpura
- Lupus Erythematosus, Systemic
- Purpura, Thrombocytopenic, Idiopathic
- Thrombocytopenia
Other Study ID Numbers
- CHUBX 2017/18
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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