Chronic treatment with juçara (Euterpe edulis) fruit pulp produces antihypertensive effect and improve on baroreflex sensitivity in Spontaneous Hypertensive Rats (SHR)

Authors

DOI:

https://doi.org/10.33448/rsd-v11i7.28995

Keywords:

Anthocyanidins; Atlantic açaí; Blood pressure control; Antihypertensive; Antioxidant; Reflex pressure control.

Abstract

Background: Juçara açaí is a Brazilian berry with high anthocyanidin content and high antioxidant properties. A correlation between oxidative stress, hypertension and baroreflex impairment is known, however, no previous studies investigate the effect of juçara fruit pulp on hypertension. Aim: The aim of this study was to investigate antihypertensive effect of juçara (Euterpe edulis) fruit pulp in SHR animals, its antioxidant capacity and influence on baroreflex sensitivity. Methods: Chemical profile was obtained by ESI(-)-FT-ICR-MS. For biological analysis, male SHR were separated into groups: control (S), which received water; captopril (SC), which received captopril (30 mg/kg), and juçara (SJ), which received juçara pulp (4.4mL/kg). Treatments were daily performed by gavage and remained for 8 weeks. Baroreflex evaluation was made by in bolus injection of phenylephrine and sodium nitroprusside, after the analysis the heart was frozen (-80ºC) for biomolecular evaluations (AOPP, TBARS, SOD and catalase activity and protein expression). Results: The treatments promoted decrease in arterial pressure (S: 163.3±2.2; SC: 154.0±0.6; SJ: 149.0±3.8 mmHg) and improved the baroreflex sensitivity after nitroprusside activation. In addition, it promoted a decrease in AOPP and an increase in the activity of antioxidant enzymes. However, no changes were observed in protein expression. Conclusion: It was shown that juçara can promote cardiovascular benefits and its consume should be stimulated for prevention of hypertension.

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15/05/2022

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PUPPIN, A. A. .; SILVA, C. L. da .; RONCHI, S. N. .; SILVA, M. de A. .; LIMA, E. M. de .; OLIVEIRA, B. G. de .; ROMÃO, W.; BISSOLI, N. S. .; ANDRADE, T. U. de .; ENDRINGER, D. C. .; BRASIL, G. A. . Chronic treatment with juçara (Euterpe edulis) fruit pulp produces antihypertensive effect and improve on baroreflex sensitivity in Spontaneous Hypertensive Rats (SHR). Research, Society and Development, [S. l.], v. 11, n. 7, p. e5711728995, 2022. DOI: 10.33448/rsd-v11i7.28995. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/28995. Acesso em: 16 aug. 2022.

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Section

Health Sciences