Effects of Salsalate on Prandial-Induced Vascular Inflammation After Spinal Cord Injury (SCI)

Not Applicable

Completed

Conditions: Spinal Cord Injury

Interventions: Drug: Salsalate 2grams twice a day for 30 days. Then Placebo for 30 days
Drug: Placebo twice a day for 30 days. Then Salsalate 2gr BID for 30 days.

Registration Number: NCT01201759

Lead Sponsor: University of Miami

Brief Summary: The overall study objectives are to examine whether:

1. Persons with spinal cord injury (SCI) having elevated body mass are at greater cardiovascular disease (CVD) risk for fasting and postprandial lipidemia, glycemia, and vascular inflammation than persons with SCI having 'normal' body mass, and

2. An inexpensive, low-risk, widely-available pharmacotherapy safely reduces CVD risks associated with fasting and postprandial lipidemia, glycemia, and vascular inflammation.

Detailed Description: To test Study Objective 1, 'overweight' and 'non-overweight' persons with SCI will be compared at baseline for fasting and postprandial responses. For Study Objective 2, all persons tested for Study Objective 1 will undergo randomization to either 1 month of Salsalate (4.0 g/day) or placebo. An untreated wash-in (1 month) will precede treatment (1 month), and a washout cross-over period (1 month) will follow. The last month will test effects of drug-placebo not examined in month 2. Fasting and postprandial responses will be tested at each time point. Intention-to-treat clinical standards ("...as randomized, so analyzed...") and 'last observation carried forward' clinical methods will be adopted.

Participants with tetraplegia are sought, as they have fewer exercise options than those with paraplegia and are at greater risk for sedentary lifestyle resulting in CVD, CVD risks, and obesity.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 18

Inclusion Criteria

SCI resulting in tetraplegia at C3-C7
injury for more than one year

Exclusion Criteria

1. any recent dietary or other lifestyle changes;
1. diabetes or inflammatory medical conditions;
1. a pressure ulcer;
1. lung or bladder infection;
1. undiagnosed illness or fever;
1. recent surgery;
1. stomach ulcer or a history of stomach upset when taking aspirin or medicines like aspirin, or ,
1. currently taking medicines used for pain or inflammation (aspirin and non-steroidal anti-inflammatory drugs, corticosteroids), blood vessel diseases (statins or fibric acid derivatives), blood clotting disorders (Coumadin, Plavix), infections (antibiotics), diabetes (Metformin), and burning 'central' pain (voltage regulators).

Study & Design

Study Type: INTERVENTIONAL

Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Placebo to Salsalate 2gr BID	Salsalate 2grams twice a day for 30 days. Then Placebo for 30 days	Placebo twice a day for 30 days. Then Salsalate 2gr BID for 30 days.
Placebo to Salsalate 2gr BID	Placebo twice a day for 30 days. Then Salsalate 2gr BID for 30 days.	Placebo twice a day for 30 days. Then Salsalate 2gr BID for 30 days.
Salsalate 2gr BID to placebo	Salsalate 2grams twice a day for 30 days. Then Placebo for 30 days	Salsalate 2grams twice a day for 30 days. Then Placebo for 30 days.
Salsalate 2gr BID to placebo	Placebo twice a day for 30 days. Then Salsalate 2gr BID for 30 days.	Salsalate 2grams twice a day for 30 days. Then Placebo for 30 days.

Primary Outcome Measures

Name	Time	Method
Change in Area Under the Curve (AUC) for Lipemia (Triglycerides) at Visits 2-3 or 4-5 Depending on Order of Treatment Assignment.	Each visit samples at 0 (immediately post-feeding), and 30,60,90,120,240,360,480 min post-feeding..	The postprandial lipemia is assessed by the change in the AUC for plasma triglycerides sampled before and after intervention at time points 0 (immediately post-feeding)to 480 min. For peak TG, and TG area under the curve (AUC), treatments (placebo and salsalate) and visits (pre and post treatment) were defined as within-subject's factors.

Secondary Outcome Measures

Name	Time	Method
Change in Area Under the Curve (AUC) for Glycemia (Glucose) at Visits 2-3 or 4-5 Depending on Order of Treatment Assignment.	Blood samples for each visit were sampled at 0 (immediately post-feeding), and 30,60,90,120,240,360,480 min post-feeding..	The postprandial glycemia is assessed by the change in the AUC for plasma glucose sampled before and after intervention at time points of 0 (immediately post-feeding) to 480 min. For peak Glucose, and Glucose area under the curve (AUC), treatments (placebo and salsalate) and visits (pre and post treatment) were defined as within-subject's factors.
Change in Area Under the Curve (AUC) for Lipemia (Free Fatty Acids ) at Visits 2-3 or 4-5 Depending on Order of Treatment Assignment.	Each visit sampled at 0 (immediately post-feeding), and 30,60,90,120,240,360,480 min post-feeding..	The postprandial lipemia is assessed by the change in the AUC for plasma Free fatty acids (FFA)sampled before and after intervention at time points of 0min immediately post feeding to 480 min. For peak FFA area under the curve (AUC), treatments (placebo and salsalate) and visits (pre and post treatment) were defined as within-subject's factors.
Change in Fasting Values for Vascular Inflammation IL-6 at Visits 2-3 or 4-5	Study visit at min -30 (fasting)	The pro-atherogenic inflammatory mediators are assessed by the change in fasting values of Interleukin-6 in plasma concentration Pre and Post intervention at -30 min ( fasting). For fasting values treatments (placebo and salsalate) and visits (pre and post) were defined as within subject's factors.