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- W1585031410 abstract "Introduction: Blood pressure (BP) control remains low despite combination therapy in resistant hypertension (RH). Thus, there is an unmet need for novel strategies targeting RH. Recently we have reported that M-ANP, a novel Mayo engineered ANP-based peptide, possesses greater and more sustained biological actions compared to ANP and is more resistant to neprilysin degradation. The current study was designed to investigate for the first time the efficacy of a single daily subcutaneous (SQ) injection of M-ANP using a chronic canine model of hypertension induced by angiotensin II (Ang-II). Hypothesis: We hypothesize that a daily SQ M-ANP injection would have potent BP lowering and renal enhancing properties in our chronic hypertensive canine model. Methods: We induced hypertension in canines (n=5) by continuous Ang II (80 ng/kg/min) osmotic mini-pump administration for 24 days. Continuous 24 hour mean BP (MBP) was measured by telemetry and a 24 hour urine collection was used to assess urinary volume, sodium (Na) and cGMP, the second messenger for the ANP system. M-ANP was administered SQ for 5 days (10μg/kg/day). Data are mean±SE. ΨP<0.05 Ang II Day 16 vs. baseline; *P<0.05 Ang II Day 16 vs. M-ANP (Table 1). Results: Chronic Ang II administration resulted in model of severe hypertension, with an increase in MBP from 112±2 to 157±2 mmHg (day 16). As seen in Table 1, M-ANP significantly reduced MBP, significantly increased plasma cGMP as well as urinary cGMP excretion, urinary volume rate (UV) and urinary Na excretion (UNa), without significant changes in heart rate (HR). Furthermore, there was a trend for plasma ANP to increase and plasma aldosterone to decrease with SQ M-ANP injection. Conclusions: This study demonstrates for the first time that chronic SQ administration of M-ANP reduces BP, activates plasma cGMP, and increases UV and UNa, without significant changes in HR in an experimental model of chronic hypertension." @default.
- W1585031410 created "2016-06-24" @default.
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- W1585031410 date "2014-11-25" @default.
- W1585031410 modified "2023-09-23" @default.
- W1585031410 title "Abstract 19094: Antihypertensive Properties of Subcutaneous M-ANP, a Novel Designer Atrial Natriuretic Peptide, in a Canine Model of Chronic Angiotensin-II Induced Hypertension" @default.
- W1585031410 doi "https://doi.org/10.1161/circ.130.suppl_2.19094" @default.
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