This study is a mechanistic study that will enroll 9 subjects who are participating in NCT02133872 (which is designed to evaluate minocycline to test the hypothesis that minocycline treatment would produce antihypertensive effects in drug-resistant neurogenic hypertensive individuals) to test whether the antihypertensive effect of minocycline is associated with a decrease in activated microglia in central nervous system autonomic regions as evidenced by changes in PET and MRI imaging.
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PET Changes in the Paraventricular Nucleus From Baseline to 26 Weeks.
Timeframe: Change in Baseline to 26 weeks