PRECISION-BP: Precision Chronopharamacotherapy Targeting NP-RAAS-BP Rhythm Axis

Summary

Obese individuals have a higher prevalence of nocturnal hypertension and non-dipping blood pressure (BP). These conditions are associated with an increased risk of cardiovascular (CV) events and death. Natriuretic Peptides (NPs) are hormones produced by the heart which directly regulate BP by causing dilation of blood vessels and by removing sodium and water from the body. NPs have a 24-hour day-night rhythm and this controls the day-night rhythm of BP as well. The NP-BP rhythm relationship is broken down in obese individuals. Obese individuals also have lower circulating NP levels. Lower circulating levels of NPs and elevated renin hormone (a part of the Renin-Angiotensin-Aldosterone System \[RAAS\]) at nighttime may contribute to the high nocturnal blood pressure in obese individuals which puts them at a higher risk of developing CV events. This current study seeks to determine the biological implications of chronopharmacology for synchronizing NP-RAAS-based blood pressure therapy with the physiological diurnal rhythms to restore the normal diurnal rhythm of blood pressure in obese individuals.

Timeline

Start

2022-02-18

Primary completion

2027-01-01

Completion

2027-01-01

Publications

• Background Parcha V, Patel N, Gutierrez OM, Li P, Gamble KL, Musunuru K, Margulies KB, Cappola TP, Wang TJ, Arora G, Arora P. Chronobiology of Natriuretic Peptides and Blood Pressure in Lean and Obese Individuals. J Am Coll Cardiol. 2021 May 11;77(18):2291-2303. doi: 10.1016/j.jacc.2021.03.291.
• Background Arora P, Wu C, Hamid T, Arora G, Agha O, Allen K, Tainsh RET, Hu D, Ryan RA, Domian IJ, Buys ES, Bloch DB, Prabhu SD, Bloch KD, Newton-Cheh C, Wang TJ. Acute Metabolic Influences on the Natriuretic Peptide System in Humans. J Am Coll Cardiol. 2016 Feb 23;67(7):804-812. doi: 10.1016/j.jacc.2015.11.049.
• Background Bajaj NS, Gutierrez OM, Arora G, Judd SE, Patel N, Bennett A, Prabhu SD, Howard G, Howard VJ, Cushman M, Arora P. Racial Differences in Plasma Levels of N-Terminal Pro-B-Type Natriuretic Peptide and Outcomes: The Reasons for Geographic and Racial Differences in Stroke (REGARDS) Study. JAMA Cardiol. 2018 Jan 1;3(1):11-17. doi: 10.1001/jamacardio.2017.4207.
• Background Arora P, Reingold J, Baggish A, Guanaga DP, Wu C, Ghorbani A, Song Y, Chen-Tournaux A, Khan AM, Tainsh LT, Buys ES, Williams JS, Heublein DM, Burnett JC, Semigran MJ, Bloch KD, Scherrer-Crosbie M, Newton-Cheh C, Kaplan LM, Wang TJ. Weight loss, saline loading, and the natriuretic peptide system. J Am Heart Assoc. 2015 Jan 16;4(1):e001265. doi: 10.1161/JAHA.114.001265.
• Background Parcha V, Kalra R, Li P, Oparil S, Arora G, Arora P. Nocturnal blood pressure dipping in treated hypertensives: insights from the SPRINT trial. Eur J Prev Cardiol. 2022 Feb 19;29(1):e25-e28. doi: 10.1093/eurjpc/zwaa125. No abstract available.

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