MicroRNA-210 (miR-210) can be a potential therapeutic target of patients with peripheral artery disease (PAD). Recent evidence suggests the role of miR-210 and oxidative stress in the pathophysiology of PAD and its association with mitochondrial function, oxidative metabolism, walking distances and quality of life. The protocol evaluates the mechanisms which miR-210 regulates oxidative stress and provides evidence of potential therapeutic strategies.
The investigators will randomize 180 PAD patients that undergoing a revascularization operation in two groups: (1) an endovascular procedure or (2) an open bypass procedure. They are also planning to recruit 50 non-PAD healthy control subjects. The goal is to answer the main hypothesis that miR-210 gene expression is a master regulator of oxidative stress and is associated with mitochondrial dysfunction, oxidative metabolism, walking function and quality of life.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
230
Participants will be randomized into an endovascular or open bypass procedure.
Healthy non-PAD participants will be recruited for the study.
UT Austing Dell Medical School
Austin, Texas, United States
Baylor Scott and White
Temple, Texas, United States
miR-210 gene expression
Measure miR-210 gene expression at baseline and after intervention
Time frame: Change from baseline to six-month follow-up
Calf muscle biopsy biochemical measures
A skeletal muscle sample will be obtained from the gastrocnemius muscle.
Time frame: Change from baseline to six-month follow-up
Six-minute walk performance
Participants walking up and down a 100 foot hallway for six minutes following a standardized protocol. The goal is for them to walk as far as possible in six minutes
Time frame: Change from baseline to six-month follow-up
Graded treadmill walk performance
Participants walking on treadmill following a standardized protocol. The goal is for them to walk as far as possible while the treadmill incline increases every 2 minutes.
Time frame: Change from baseline to six-month follow-up
The 36-Item Short Form questionnaire (SF-36)
This well validated quality of life measure will be used to assess changes in patient perceived quality of life. The SF-36 is scored from 0-100, with 100 being the best score.
Time frame: Change from baseline to six-month follow-up
The Walking Impairment Questionnaire
The well validated Walking Impairment Questionnaire (WIQ) will be used to measure patient- perceived walking performance. The WIQ is scored from 0-100, with 100 being the best score.
Time frame: Change from baseline to six-month follow-up
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