scholarly journals Coconut oil supplementation reduces blood pressure and oxidative stress in spontaneously hypertensive rats

2014 ◽  
Vol 8 (S4) ◽  
Author(s):  
Naiane Ferraz Bandeira Alves ◽  
Naiane Alves ◽  
Suênia Porpino ◽  
Matheus Monteiro ◽  
Thyago Queiroz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Spontaneously Hypertensive Rats ◽  
Coconut Oil ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
And Oxidative Stress

Abstract 1378: NFkb Blockade Attenuate Cytokines And Oxidative Stress In The Paraventricular Nucleus And Decreases Neurohumoral Excitation In Spontaneously Hypertensive Rats

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Nithya Mariappan ◽  
Carrie Elks ◽  
Masudul Haque ◽  
Philip J Ebnezer ◽  
Elizabeth McIIwain ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Paraventricular Nucleus ◽  
Spontaneously Hypertensive Rats ◽  
Left Ventricular ◽  
Oxidative Stress Markers ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
Stress Markers ◽  
And Oxidative Stress

The transcriptional factor, nuclear factor kappa B (NFkB) plays an important role in the regulation of cytokines. Among the cytokines, tumor necrosis factor-alpha (TNF) plays an important role in cardiovascular pathophysiology. This study was done to determine whether TNF-α blockade with etanercept (ETN) or NFkB blockade with dithiol pyrolidine thiocarbamate (PDTC) attenuate oxidative stress in the paraventricular nucleus (PVN) and contribute to neurohumoral excitation in spontaneously hypertensive rats. Method: Male 20 week old SHR rats were treated with ETN (1 mg/kg BW, sc) or PDTC (100mg/kg BW, ip) for 5 week period. Left ventricular function was measured at baseline (20 weeks) and at 25 weeks using echocardiography. Blood pressure was measured at weekly intervals throughout the study. At the end of the protocol rats were sacrificed the PVN was microdissected for the measurement of cytokines, oxidative stress markers using real time PCR (fold increase compared to WKY controls) and by immunohistochemistry. Superoxide, total reactive oxygen species and peroxynitrite were measured in the PVN and LV using electron paramagnetic resonance. Plasma norepinephrine and epinephrine an indicator of neurohumoral excitation was measured using HPLC-EC. Results: PVN data are tabulated. SHR animals had increased expression of protein and mRNA for cytokines and oxidative stress markers in the PVN and LV with increased MAP and cardiac hypertrophy when compared to WKY rats. Treatment with ETN and PDTC attenuated these increases with PDTC showing marked effect than ETN on hypertrophy and blood pressure responses. Conclusion: These findings suggest that cytokine activation in the PVN contributes to increased oxidative stress and neurohumoral excitation in hypertension.

Urtica dioica L. leaf extract modulates blood pressure and oxidative stress in spontaneously hypertensive rats

Phytomedicine ◽  
2018 ◽  
Vol 46 ◽  
pp. 39-45 ◽  
Author(s):  
Una-Jovana Vajic ◽  
Jelica Grujic-Milanovic ◽  
Zoran Miloradovic ◽  
Djurdjica Jovovic ◽  
Milan Ivanov ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Spontaneously Hypertensive Rats ◽  
Leaf Extract ◽  
Urtica Dioica ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
And Oxidative Stress

scholarly journals Acute Treatment with Lauric Acid Reduces Blood Pressure and Oxidative Stress in Spontaneously Hypertensive Rats

2017 ◽  
Vol 120 (4) ◽  
pp. 348-353 ◽  
Author(s):  
Naiane Ferraz Bandeira Alves ◽  
Thyago Moreira de Queiroz ◽  
Rafael de Almeida Travassos ◽  
Marciane Magnani ◽  
Valdir de Andrade Braga
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Lauric Acid ◽  
Acute Treatment ◽  
Spontaneously Hypertensive Rats ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
And Oxidative Stress

scholarly journals Administration of Telmisartan Reduced Systolic Blood Pressure and Oxidative Stress Probably Through the Activation of PI3K/Akt/eNOS Pathway and NO Release in Spontaneously Hypertensive Rats

2013 ◽  
pp. 351-359 ◽  
Author(s):  
L. XU ◽  
Y. LIU
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Blood Pressure ◽  
Angiotensin Ii ◽  
Spontaneously Hypertensive Rats ◽  
Angiotensin Ii Receptor ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
No Release ◽  
And Oxidative Stress

We investigated the effects of telmisartan, the blocker of angiotensin II receptor 1, on the regulation of systolic blood pressure (SBP) and oxidative stress through endothelial nitric oxide (NO) release in spontaneously hypertensive rats (SHRs). SHRs randomly received placebo, oral feeding of telmisartan (5 mg/kg or 10 mg/kg) every day and Wistar-Kyoto rats (WKYs) served as normotensive control. The SBP of rat was measured before and weekly thereafter. After a total of 8-week treatment, rats were killed for experimental measurements. Parameters that subject to measurements in isolated aorta endothelial cells include: NO concentration, protein expression levels of angiotensin II receptor 1, nitrotyrosine, 8-isoprostane, SOD, PI3K, Akt, AMPK and eNOS. In addition, L-NMMA, a general inhibitor of nitric oxide synthase, was also applied to test the inhibition of NO concentration. We found that SBPs were significantly lower in telmisartan therapy group than in placebo treated hypertensive rats and WKYs (p<0.05). The NO concentration was significantly higher in telmisartan-treated group with increased activity of the PI3K/Akt pathway and activated eNOS signaling. Blockade of Akt activity reversed such effects. Activation of AMPK also contributed to the phosphorylation of eNOS. L-NMMA treatment reduced less NO concentration in SHR rats than the telmisartan co-treated groups. Oxidative stress in SHRs was also attenuated by telmisartan administration, shown by reduced formation of nitrotyrosine, 8-isoprostane, and recovered SOD protein level. Telmisartan enhanced NO release by activating the PI3K/Akt system, AMPK phosphorylation and eNOS expression, which attenuated the blood pressure and oxidative stress in SHRs.

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