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Pontes RB, Nishi EE, Crajoinas RO, Milanez MIO, Girardi ACC, Campos RR, Bergamaschi CT. Relative Contribution of Blood Pressure and Renal Sympathetic Nerve Activity to Proximal Tubular Sodium Reabsorption via NHE3 Activity. Int J Mol Sci 2022; 24:ijms24010349. [PMID: 36613793 PMCID: PMC9820392 DOI: 10.3390/ijms24010349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/17/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
We examined the effects of an acute increase in blood pressure (BP) and renal sympathetic nerve activity (rSNA) induced by bicuculline (Bic) injection in the paraventricular nucleus of hypothalamus (PVN) or the effects of a selective increase in rSNA induced by renal nerve stimulation (RNS) on the renal excretion of sodium and water and its effect on sodium-hydrogen exchanger 3 (NHE3) activity. Uninephrectomized anesthetized male Wistar rats were divided into three groups: (1) Sham; (2) Bic PVN: (3) RNS + Bic injection into the PVN. BP and rSNA were recorded, and urine was collected prior and after the interventions in all groups. RNS decreased sodium (58%) and water excretion (53%) independently of BP changes (p < 0.05). However, after Bic injection in the PVN during RNS stimulation, the BP and rSNA increased by 30% and 60% (p < 0.05), respectively, diuresis (5-fold) and natriuresis (2.3-fold) were increased (p < 0.05), and NHE3 activity was significantly reduced, independently of glomerular filtration rate changes. Thus, an acute increase in the BP overcomes RNS, leading to diuresis, natriuresis, and NHE3 activity inhibition.
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Affiliation(s)
- Roberto B. Pontes
- Cardiovascular Division, Department of Physiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil
| | - Erika E. Nishi
- Cardiovascular Division, Department of Physiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil
| | - Renato O. Crajoinas
- Heart Institute (InCor), University of São Paulo Medical School, São Paulo 01246-903, Brazil
| | - Maycon I. O. Milanez
- Cardiovascular Division, Department of Physiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil
| | - Adriana C. C. Girardi
- Heart Institute (InCor), University of São Paulo Medical School, São Paulo 01246-903, Brazil
| | - Ruy R Campos
- Cardiovascular Division, Department of Physiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil
| | - Cassia T Bergamaschi
- Cardiovascular Division, Department of Physiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil
- Correspondence:
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Chao YM, Rauchová H, Chan JYH. Disparate Roles of Oxidative Stress in Rostral Ventrolateral Medulla in Age-Dependent Susceptibility to Hypertension Induced by Systemic l-NAME Treatment in Rats. Biomedicines 2022; 10:biomedicines10092232. [PMID: 36140333 PMCID: PMC9496567 DOI: 10.3390/biomedicines10092232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/03/2022] [Accepted: 09/06/2022] [Indexed: 12/12/2022] Open
Abstract
This study aims to investigate whether tissue oxidative stress in the rostral ventrolateral medulla (RVLM), where sympathetic premotor neurons reside, plays an active role in age-dependent susceptibility to hypertension in response to nitric oxide (NO) deficiency induced by systemic l-NAME treatment, and to decipher the underlying molecular mechanisms. Systolic blood pressure (SBP) and heart rate (HR) in conscious rats were recorded, along with measurements of plasma and RVLM level of NO and reactive oxygen species (ROS), and expression of mRNA and protein involved in ROS production and clearance, in both young and adult rats subjected to intraperitoneal (i.p.) infusion of l-NAME. Pharmacological treatments were administered by oral gavage or intracisternal infusion. Gene silencing of target mRNA was made by bilateral microinjection into RVLM of lentivirus that encodes a short hairpin RNA (shRNA) to knock down gene expression of NADPH oxidase activator 1 (Noxa1). We found that i.p. infusion of l-NAME resulted in increases in SBP, sympathetic neurogenic vasomotor activity, and plasma norepinephrine levels in an age-dependent manner. Systemic l-NAME also evoked oxidative stress in RVLM of adult, but not young rats, accompanied by augmented enzyme activity of NADPH oxidase and reduced mitochondrial electron transport enzyme activities. Treatment with L-arginine via oral gavage or infusion into the cistern magna (i.c.), but not i.c. tempol or mitoQ10, significantly offset the l-NAME-induced hypertension in young rats. On the other hand, all treatments appreciably reduced l-NAME-induced hypertension in adult rats. The mRNA microarray analysis revealed that four genes involved in ROS production and clearance were differentially expressed in RVLM in an age-related manner. Of them, Noxa1, and GPx2 were upregulated and Duox2 and Ucp3 were downregulated. Systemic l-NAME treatment caused greater upregulation of Noxa1, but not Ucp3, mRNA expression in RVLM of adult rats. Gene silencing of Noxa1 in RVLM effectively alleviated oxidative stress and protected adult rats against l-NAME-induced hypertension. These data together suggest that hypertension induced by systemic l-NAME treatment in young rats is mediated primarily by NO deficiency that occurs both in vascular smooth muscle cells and RVLM. On the other hand, enhanced augmentation of oxidative stress in RVLM may contribute to the heightened susceptibility of adult rats to hypertension induced by systemic l-NAME treatment.
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Affiliation(s)
- Yung-Mei Chao
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Hana Rauchová
- Institute of Physiology, Czech Academy of Sciences, 14200 Prague, Czech Republic
| | - Julie Y. H. Chan
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- Correspondence: ; Tel.: +886-77338415
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Meephat S, Prasatthong P, Potue P, Bunbupha S, Pakdeechote P, Maneesai P. Diosmetin Ameliorates Vascular Dysfunction and Remodeling by Modulation of Nrf2/HO-1 and p-JNK/p-NF-κB Expression in Hypertensive Rats. Antioxidants (Basel) 2021; 10:antiox10091487. [PMID: 34573119 PMCID: PMC8469706 DOI: 10.3390/antiox10091487] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 12/12/2022] Open
Abstract
Diosmetin is a citrus flavonoid that has antioxidant and anti-inflammatory effects. This study examined the effect of diosmetin on blood pressure and vascular alterations and its underlying mechanisms in experimentally hypertensive rats. Male Sprague rats were administered Nω-nitro-l-arginine methyl ester L-NAME for five weeks and were given diosmetin at doses of 20 or 40 mg/kg or captopril (5 mg/kg) for two weeks. Diosmetin alleviated hypertension, improved endothelial dysfunction, and suppressed the overactivity of sympathetic nerve-mediated vasoconstriction in aorta and mesentery hypertensive rats (p < 0.05). Increases in plasma and aortic tissue malondialdehyde (MDA) and carotid superoxide generations and reductions of plasma superoxide dismutase, catalase, and nitric oxide in hypertensive rats were ameliorated by diosmetin (p < 0.05). Diosmetin increased the protein expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) in hypertensive rats. Furthermore, diosmetin mitigated hypertrophy and collagen accumulation of the aortic wall in L-NAME rats. It exhibited an anti-inflammatory effect by reducing interleukin-6 (IL-6) accumulation and by overexpressing the phospho-c-Jun N-terminal kinases (p-JNK) and the phospho-nuclear factor-kappaB (p-NF-κB) proteins in the aorta (p < 0.05). Captopril was a positive control substance and had similar effects to diosmetin. In summary, diosmetin reduced blood pressure and alleviated vascular abnormalities in L-NAME-treated rats. These effects might be related to antioxidant and anti-inflammatory effects as well as to the modulation of the expression of the Nrf2/HO1 and p-JNK/NF-κB proteins.
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Affiliation(s)
- Sariya Meephat
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (S.M.); (P.P.); (P.P.); (P.P.)
| | - Patoomporn Prasatthong
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (S.M.); (P.P.); (P.P.); (P.P.)
| | - Prapassorn Potue
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (S.M.); (P.P.); (P.P.); (P.P.)
| | - Sarawoot Bunbupha
- Faculty of Medicine, Mahasarakham University, Mahasarakham 44000, Thailand;
| | - Poungrat Pakdeechote
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (S.M.); (P.P.); (P.P.); (P.P.)
- Research Institute for Human High Performance and Health Promotion, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Putcharawipa Maneesai
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (S.M.); (P.P.); (P.P.); (P.P.)
- Research Institute for Human High Performance and Health Promotion, Khon Kaen University, Khon Kaen 40002, Thailand
- Correspondence: ; Tel.: +66-43348394
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Del Mauro JS, Prince PD, Santander Plantamura Y, Allo MA, Parola L, Fernandez Machulsky N, Morettón MA, Bin EP, González GE, Bertera FM, Carranza A, Berg G, Taira CA, Donato M, Chiappetta DA, Polizio AH, Höcht C. Nebivolol is more effective than atenolol for blood pressure variability attenuation and target organ damage prevention in L-NAME hypertensive rats. Hypertens Res 2021; 44:791-802. [PMID: 33612826 DOI: 10.1038/s41440-021-00630-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 12/06/2020] [Accepted: 12/27/2020] [Indexed: 02/07/2023]
Abstract
β-Adrenergic blockers are no longer recommended as first-line therapy due to the reduced cardioprotection of traditional β-blockers compared with other antihypertensive drugs. It is unknown whether third-generation β-blockers share the limitations of traditional β-blockers. The aim of the present study was to compare the effects of nebivolol or atenolol on central and peripheral systolic blood pressure (SBP) and its variability and target organ damage (TOD) in N-nitro-L-arginine methyl ester (L-NAME) hypertensive rats. Male Wistar rats were treated with L-NAME for 8 weeks together with oral administration of nebivolol 30 mg/kg (n = 8), atenolol 90 mg/kg (n = 8), or vehicle (n = 8). The control group was composed of vehicle-treated Wistar rats. SBP and its variability, as well as echocardiographic parameters, were assessed during the last 2 weeks of treatment. Tissue levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and transforming growth factor β (TGF-β), and histopathological parameters were evaluated in the left ventricle and aorta. Nebivolol had a greater ability than atenolol to decrease central SBP and mid-term and short-term blood pressure variability (BPV) in L-NAME rats. Echocardiographic analysis showed that nebivolol was more effective than atenolol on E/A wave ratio normalization. Compared with atenolol treatment, nebivolol had a greater protective effect on different TOD markers, inducing a decrease in collagen deposition and a reduction in the proinflammatory cytokines IL-6 and TNF-α in the left ventricle and aorta. Our findings suggest that the adverse hemodynamic profile and the reduced cardiovascular protection reported with traditional β-blockers must not be carried forward to third-generation β-blockers.
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Affiliation(s)
- Julieta S Del Mauro
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina.
| | - Paula D Prince
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Físicoquímica, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, Argentina
| | - Yanina Santander Plantamura
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina
| | - Miguel A Allo
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina
| | - Luciano Parola
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina
| | - Nahuel Fernandez Machulsky
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Buenos Aires, Argentina
| | - Marcela A Morettón
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Tecnología Farmacéutica, Buenos Aires, Argentina
| | - Eliana P Bin
- Universidad de Buenos Aires, Facultad de Medicina, Instituto de Fisiopatología Cardiovascular (INFICA), Departamento de Patología, Buenos Aires, Argentina
| | - Germán E González
- Instituto de Investigaciones Biomédicas (BIOMED UCA-CONICET), Laboratorio de Patología Cardiovascular Experimental e Hipertensión Arterial, Buenos Aires, Argentina
| | - Facundo M Bertera
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Buenos Aires, Argentina
| | - Andrea Carranza
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina
| | - Gabriela Berg
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Bioquímica Clínica, Laboratorio de Lípidos y Aterosclerosis, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Buenos Aires, Argentina
| | - Carlos A Taira
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Buenos Aires, Argentina
| | - Martín Donato
- Universidad de Buenos Aires, Facultad de Medicina, Instituto de Fisiopatología Cardiovascular (INFICA), Departamento de Patología, Buenos Aires, Argentina
| | - Diego A Chiappetta
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Tecnología Farmacéutica, Buenos Aires, Argentina
| | - Ariel H Polizio
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina
| | - Christian Höcht
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Buenos Aires, Argentina
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Rodríguez-Núñez I, Pontes RB, Romero F, Campos RR. Effects of physical exercise on baroreflex sensitivity and renal sympathetic nerve activity in chronic nicotine-treated rats. Can J Physiol Pharmacol 2020; 99:786-794. [PMID: 33290163 DOI: 10.1139/cjpp-2020-0381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic nicotine exposure may increase cardiovascular risk by impairing the cardiac autonomic function. Besides, physical exercise (PE) has shown to improve cardiovascular health. Thus, we aimed to investigate the effects of PE on baroreflex sensitivity (BRS), heart rate variability (HRV), and sympathetic nerve activity (SNA) in chronically nicotine-exposed rats. Male Wistar rats were assigned to four independent groups: Control (treated with saline solution), Control+Ex (treated with saline and submitted to treadmill training), Nicotine (treated with Nicotine), and Nicotine+Ex (treated with nicotine and submitted to treadmill training). Nicotine (1 mg·kg-1) was administered daily for 28 consecutive days. PE consisted of running exercise (60%-70% of maximal aerobic capacity) for 45 min, 5 days per week, for 4 weeks. At the end of the protocol, cardiac BRS, HRV, renal SNA (rSNA), and renal BRS were assessed. Nicotine treatment decreased absolute values of HRV indexes, increased low frequency/high frequency ratio of HRV, reduced the bradycardic and sympatho-inhibitory baroreceptor reflex responses, and reduced the rSNA. PE effectively restored time-domain HRV indexes, the bradycardic and sympatho-inhibitory reflex responses, and the rSNA in chronic nicotine-treated rats. PE was effective in preventing the deterioration of time-domain parameters of HRV, arterial baroreceptor dysfunction, and the rSNA after nicotine treatment.
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Affiliation(s)
- Iván Rodríguez-Núñez
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil.,Departamento de Kinesiología, Facultad de Medicina, Universidad de Concepción, Chile
| | - Roberto B Pontes
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
| | - Fernando Romero
- Programa de Doctorado en Ciencias Médicas, Departamento de Cirugía, Facultad de Medicina, Universidad de La Frontera, Temuco. Chile
| | - Ruy R Campos
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
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Zambrano LI, Pontes RB, Garcia ML, Nishi EE, Nogueira FN, Higa EMS, Cespedes JG, Bergamaschi CT, Campos RR. Pattern of sympathetic vasomotor activity in a model of hypertension induced by nitric oxide synthase blockade. Physiol Rep 2020; 7:e14183. [PMID: 31325242 PMCID: PMC6642275 DOI: 10.14814/phy2.14183] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 12/12/2022] Open
Abstract
We aimed to investigate the effects of nitric oxide (NO) synthesis inhibition by NO synthase inhibitor N‐nitro‐L‐arginine‐methyl ester (L‐NAME) treatment on the sympathetic vasomotor nerve activity (SNA) on two sympathetic vasomotor nerves, the renal and splanchnic. NO plasma level and systemic oxidative stress were assessed. Hypertension was induced by L‐NAME (20 mg/kg per day, by gavage, for seven consecutive days) in male Wistar rats. At the end of the treatment, blood pressure, heart rate, arterial baroreflex sensitivity, renal SNA (rSNA), and splanchnic SNA (sSNA) were assessed in urethane anesthetized rats. L‐NAME‐treated rats presented increased blood pressure (152 ± 2 mmHg, n = 17) compared to the control group (101 ± 2 mmHg, n = 15). Both rSNA (147 ± 10, n = 15 vs. 114 ± 5 Spikes/s, n = 9) and sSNA (137 ± 13, n = 14 vs. 74 ± 13 spikes/s, n = 9) were significantly increased in the L‐NAME‐treated compared to the control group. A differential response on baroreflex sensitivity was found, with a significant reduction for rSNA but not for sSNA arterial baroreceptor sensitivity in L‐NAME‐treated rats. The adjusted regression model revealed that the reduction of systemic NO levels partially explains the variation in sSNA and blood pressure, but not rSNA. Taken together, our data show that hypertension induced by NO synthase blockade is characterized by increased SNA to the rSNA and sSNA. In addition, we found that the rats that had the greatest reduction in NO levels in plasma by L‐NAME were those that developed higher blood pressure levels. The reduction in the NO level partially explains the variations in sSNA but not in rSNA.
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Affiliation(s)
- Lysien I Zambrano
- Department of Physiology, Cardiovascular Division, Escola Paulista de Medicina-Universidade Federal de São Paulo, São Paulo, Brazil.,Department of Morphology, School of Medical Sciences, National Autonomous University of Honduras, Tegucigalpa, Honduras
| | - Roberto B Pontes
- Department of Physiology, Cardiovascular Division, Escola Paulista de Medicina-Universidade Federal de São Paulo, São Paulo, Brazil
| | - Michelle L Garcia
- Department of Physiology, Cardiovascular Division, Escola Paulista de Medicina-Universidade Federal de São Paulo, São Paulo, Brazil
| | - Erika E Nishi
- Department of Physiology, Cardiovascular Division, Escola Paulista de Medicina-Universidade Federal de São Paulo, São Paulo, Brazil
| | - Fernando N Nogueira
- Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, Brazil
| | - Elisa M S Higa
- Nephrology Division, Escola Paulista de Medicina Universidade Federal de São Paulo, São Paulo, Brazil
| | - Juliana G Cespedes
- Institute of Science and Technology, Universidade Federal de São Paulo, São Jose dos Campos, Brazil
| | - Cassia T Bergamaschi
- Department of Physiology, Cardiovascular Division, Escola Paulista de Medicina-Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ruy R Campos
- Department of Physiology, Cardiovascular Division, Escola Paulista de Medicina-Universidade Federal de São Paulo, São Paulo, Brazil
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Kanthlal SK, Joseph J, Paul B, M V, P UD. Antioxidant and vasorelaxant effects of aqueous extract of large cardamom in L-NAME induced hypertensive rats. Clin Exp Hypertens 2020; 42:581-589. [PMID: 32202168 DOI: 10.1080/10641963.2020.1739699] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE The present work aimed to study the effect of aqueous extract of large cardamom (AELC) to prevent vascular remodeling and oxidative stress in Nω-Nitro-L-arginine methyl ester (L-NAME)-induced hypertension. METHOD Male Wistar rats were administered with L-NAME 40 mg/kg/day for 28 days by oral gavage. The treatments included captopril (20 mg/kg/day) or AELC (100, 200 and 400 mg/kg/day) along with L-NAME administration. RESULTS L-NAME treated rats showed high systolic, diastolic and mean arterial pressure, decreased nitric oxide level, increased level of malondialdehyde in plasma, heart, aorta and kidney, hypertrophy of the vascular wall and reduced vascular response to acetylcholine in phenylephrine-precontracted aorta. Treatment with AELC markedly reduced the blood pressure, restored the nitric oxide level, reduced the malondialdehyde level, alleviated the hypertrophy in L-NAME-induced hypertensive rats. Additionally, it also improved the vascular response to acetylcholine in phenylephrine pre-contracted aorta. CONCLUSION In conclusion, our results demonstrate the preventive effect of AELC in L-NAME-induced hypertensive model, which is possibly related to antioxidant activities and restoration of nitric oxide level.
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Affiliation(s)
- S K Kanthlal
- Department of Pharmacology, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham , Kochi, India
| | - Jipnomon Joseph
- Department of Pharmacology, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham , Kochi, India
| | - Bindhu Paul
- Amrita Centre for Nano Sciences and Molecular Medicine, Amrita Vishwa Vidyapeetham , Kochi, India
| | - Vijayakumar M
- Department of Cardiology, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham , Kochi, India
| | - Uma Devi P
- Department of Pharmacology, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham , Kochi, India
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Banez MJ, Geluz MI, Chandra A, Hamdan T, Biswas OS, Bryan NS, Von Schwarz ER. A systemic review on the antioxidant and anti-inflammatory effects of resveratrol, curcumin, and dietary nitric oxide supplementation on human cardiovascular health. Nutr Res 2020; 78:11-26. [PMID: 32428778 DOI: 10.1016/j.nutres.2020.03.002] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 02/24/2020] [Accepted: 03/06/2020] [Indexed: 12/11/2022]
Abstract
The potential benefits of supplemental nutrients and dietary interventions against cardiovascular morbidity and mortality have been extensively investigated throughout the years. Numerous supplements claim cardioprotection and reduction of cardiovascular risk factors, but the roles of many supplements have not been determined. In the vast number of supplements on the market asserting cardioprotective effects, only 3 have been thoroughly evaluated and consistently reported as effective by our clinic patients. They have used supplements such as fish oil, multivitamins, and calcium, but many had not known of the benefits of resveratrol, curcumin, and nitric oxide as supplements for improving cardiovascular health. The cardioprotective effects of these dietary supplements in both animal models and humans have been explored with proposed mechanisms of action mostly attributed to antioxidant and anti-inflammatory properties. Resveratrol is one of the most studied polyphenols with established cardiovascular benefits. Preclinical studies have demonstrated these effects exerted via improved inflammatory markers, atherogenic profile, glucose metabolism, and endothelial function and are further supported by clinical trials. Curcumin has a well-established anti-inflammatory role by regulating numerous transcription factors and cytokines linked to inflammation. Inflammation is an underlying pathology in cardiovascular diseases, rendering curcumin a potential therapeutic compound. Similarly, nitric oxide supplementation has demonstrated cardiovascular benefits by normalizing blood pressure; enhancing blood flow; and reducing inflammation, immune dysfunction, and oxidative stress. A comprehensive review was performed evaluating the cardioprotective effects of these 3 dietary supplements with hope to provide updated information, promote further awareness of these supplements, and inspire future studies on their effects on cardiovascular health.
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Affiliation(s)
- Melissa J Banez
- Southern California Hospital Heart Institute, 3831 Hughes Ave, Suite 105, Culver City, CA 90232.
| | - Matthew I Geluz
- Southern California Hospital Heart Institute, 3831 Hughes Ave, Suite 105, Culver City, CA 90232.
| | - Anjali Chandra
- Southern California Hospital Heart Institute, 3831 Hughes Ave, Suite 105, Culver City, CA 90232.
| | - Tesnim Hamdan
- Southern California Hospital Heart Institute, 3831 Hughes Ave, Suite 105, Culver City, CA 90232.
| | - Olivia S Biswas
- Southern California Hospital Heart Institute, 3831 Hughes Ave, Suite 105, Culver City, CA 90232.
| | - Nathan S Bryan
- Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030.
| | - Ernst R Von Schwarz
- Southern California Hospital Heart Institute, 3831 Hughes Ave, Suite 105, Culver City, CA 90232.
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Costa-Ferreira W, Gomes-de-Souza L, Crestani CC. AT2 and MAS (but not AT1) angiotensinergic receptors in the medial amygdaloid nucleus modulate the baroreflex activity in rats. Pflugers Arch 2019; 471:1173-1182. [DOI: 10.1007/s00424-019-02301-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/26/2019] [Accepted: 08/01/2019] [Indexed: 01/27/2023]
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