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This pilot study will test the hypothesis that a low sodium diet will decrease sodium (23Na) magnetic resonance imaging-determined skin sodium concentrations in patients with systemic lupus erythematosus (SLE) and improve blood pressure and inflammation
This pilot study will test the hypothesis that a low sodium diet will decrease 23Na magnetic resonance imaging-determined skin sodium concentrations in patients with SLE and improve blood pressure and inflammation. Investigators plan to enroll 21 participants who will be randomized to low salt or high salt diet. Participants will eat the first diet for 28 days, and after a 2 week washout, Participants will eat the second diet (whichever the participant was not randomized to for the first phase). Participant will know what diet participant is on, study coordinator who does the assessment will be blinded to diet.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Low Dietary Sodium | Experimental | Participants will be randomized to a low sodium diet (50 mmol/24 hours) for 28 days (range allowed 25-31 days) or a high sodium diet (250 mmol/24 hours) for 28 days (range allowed 25-31 days) with a 4 week washout period between (range 2-3 weeks). |
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| High Dietary Sodium | Experimental | Participants will be randomized to a low sodium diet (50 mmol/24 hours) for 28 days (range allowed 25-31 days) or a high sodium diet (250 mmol/24 hours) for 28 days (range allowed 25-31 days) with a 4 week washout period between (range 2-3 weeks). |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Low Dietary Sodium | Dietary Supplement | Participants will be randomized to a low sodium diet (50 mmol/24 hours) for 28 days (range allowed 25-31 days) with a 4 week washout period between (range 2-3 weeks). |
| Measure | Description | Time Frame |
|---|---|---|
| sodium concentration in skin | sodium concentration in skin after 1 month low salt diet will be compared to sodium concentration in skin after 1 month high sodium diet, with 2 week wash out between | 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| SLEDAI | SLEDAI stands for Systemic Lupus Erythematosus Disease Activity Index, a list of 24 items that covers clinical findings and laboratory tests that combined indicate how active a participant's disease is. SLEDAI after 1 month low salt diet will be compared to SLEDAI after 1 month high sodium diet, with 2 week wash out between | 3 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Charles M Stein, MD | Vanderbilt University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Vanderbilt University | Nashville | Tennessee | 37203 | United States |
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| ID | Term |
|---|---|
| D008180 | Lupus Erythematosus, Systemic |
| ID | Term |
|---|---|
| D003240 | Connective Tissue Diseases |
| D017437 | Skin and Connective Tissue Diseases |
| D001327 | Autoimmune Diseases |
| D007154 | Immune System Diseases |
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| High Dietary Sodium | Dietary Supplement | Participants will be randomized to a high sodium diet (250 mmol/24 hours) for 28 days (range allowed 25-31 days) with a 4 week washout period between (range 2-3 weeks). |
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| blood pressure | Blood pressure after 1 month low salt diet will be compared to blood pressure after 1 month high sodium diet, with 2 week wash out between | 3 months |