1. John M. Dalton Cardiovascular Research Center, and Department of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri 65211, United States
2. Tensive Controls, Inc., Columbia, Missouri 65211, United States
3. Department of Anatomy, Physiology and Pharmacology, Auburn University, College of Veterinary Medicine, Auburn, Alabama 36849, United States
4. Department of Chemistry and Molecular Interaction Core, University of Missouri, Columbia, Missouri 65211, United States
5. Department of Chemistry and NMR Core, University of Missouri, Columbia, Missouri 65211, United States
6. Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, United States̀