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- W2764530102 abstract "Background: C-type natriuretic peptide (CNP) plays an important role in the regulation of cardiovascular function and morphology. We have previously demonstrated that CNP increases nitric oxide (NO) system activity in vivo in spontaneously hypertensive rats (SHR). Objective: The goal of this study is to evaluate the effect of chronic CNP administration on systolic blood pressure (SBP), cardiovascular function and the NO system in spontaneously hypertensive and normotensive rats. Methods: Twelve-week-old normotensive male Wistar rats and SHR were used. They received chronic infusion of saline or CNP (0.75 mg/h/rat) for 14 days via subcutaneously implanted osmotic pumps. Systolic blood pressure was measured and an electrocardiogram and echocardiogram were performed. The left ventricle and the thoracic aorta were resected; nitric oxide synthase (NOS) activity was determined using L-[U14C]-arginine and vascular reactivity was assessed. Results: Chronic administration of CNP decreased SBP in SHR. Cardiac output was lower in SHR and increased with CNP; however, CNP had no effect in normotensive rats. Spontaneously hypertensive rats had unbalanced aortic vasodilation and vasoconstriction responses, and CNP improved the vascular function. Nitric oxide synthase activity was greater in SHR and increased with the 14-day CNP infusion, but this increase was lower than in normotensive rats. Conclusion: C-type natriuretic peptide induces cardiovascular and NO system changes which may be beneficial in this model of hypertension." @default.
- W2764530102 created "2017-10-27" @default.
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- W2764530102 date "2015-05-01" @default.
- W2764530102 modified "2023-10-18" @default.
- W2764530102 title "RESPUESTA CARDIOVASCULAR A LA ADMINISTRACIÓN CRÓNICA DE PÉPTIDO NATRIURÉTICO TIPO C EN RATAS ESPONTÁNEAMENTE HIPERTENSAS" @default.
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- W2764530102 doi "https://doi.org/10.7775/rac.es.v83.i2.4292" @default.
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