Aliskiren attenuates proteinuria in mice with lupus nephritis by a blood pressure-independent mechanism

Lupus ◽  
2012 ◽  
Vol 22 (2) ◽  
pp. 180-189 ◽  
Author(s):  
T-H Yen ◽  
H-Y Yang ◽  
Y-H Yeh ◽  
P-H Chu ◽  
C-J Wen ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Lupus Nephritis ◽  
Independent Mechanism ◽  
Pressure Independent

Hyperuricemia induces a primary renal arteriolopathy in rats by a blood pressure-independent mechanism

2002 ◽  
Vol 282 (6) ◽  
pp. F991-F997 ◽  
Author(s):  
Marilda Mazzali ◽  
John Kanellis ◽  
Lin Han ◽  
Lili Feng ◽  
Yi-Yang Xia ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renin Angiotensin System ◽  
Renal Vasculature ◽  
Angiotensin System ◽  
Salt Diet ◽  
Low Salt ◽  
Independent Mechanism ◽  
Pressure Independent ◽  
Proliferation In Vitro

Hyperuricemia is associated with hypertension and vascular disease, but whether this represents a causal relationship or an epiphenomenon remains unknown. We recently reported a model of mild hyperuricemia in rats that results in increased blood pressure and mild renal fibrosis. In this study, we examined the effect of hyperuricemia on the renal vasculature. Rats fed 2% oxonic acid and a low-salt diet for 7 wk developed mild hyperuricemia (1.8 vs. 1.4 mg/dl, P < 0.05), hypertension [147 vs. 127 mmHg systolic blood pressure (SBP), P < 0.05], and afferent arteriolar thickening, with a 35% increase in medial area ( P < 0.05). Allopurinol or benziodarone prevented the hyperuricemia, hypertension, and arteriolopathy. Hydrochlorothiazide treatment did not prevent the hyperuricemia or arteriolopathy despite controlling blood pressure. In contrast, the arteriolopathy and hypertension were prevented by both enalapril and losartan. Uric acid also directly stimulated vascular smooth muscle cell proliferation in vitro, and this was partially inhibited by losartan. Thus hyperuricemia induces a renal arteriolopathy in rats that is blood pressure independent and involves the renin-angiotensin system.

scholarly journals Salt-Induced Cardiac Hypertrophy and Interstitial Fibrosis Are Due to a Blood Pressure–Independent Mechanism in Wistar Rats

2010 ◽  
Vol 140 (10) ◽  
pp. 1742-1751 ◽  
Author(s):  
Daniele N. Ferreira ◽  
Isis A. Katayama ◽  
Ivone B. Oliveira ◽  
Kaleizu T. Rosa ◽  
Luzia N. S. Furukawa ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cardiac Hypertrophy ◽  
Wistar Rats ◽  
Interstitial Fibrosis ◽  
Independent Mechanism ◽  
Pressure Independent

scholarly journals Rheumatoid Arthritis Impacts on the Independent Relationships between Circulating Adiponectin Concentrations and Cardiovascular Metabolic Risk

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Patrick H. Dessein ◽  
Gavin R. Norton ◽  
Margaret Badenhorst ◽  
Angela J. Woodiwiss ◽  
Ahmed Solomon
Keyword(s):  
Rheumatoid Arthritis ◽  
Risk Factors ◽  
Blood Pressure ◽  
Cardiovascular Risk ◽  
Hdl Cholesterol ◽  
Intima Media Thickness ◽  
Carotid Intima Media Thickness ◽  
Metabolic Risk ◽  
Black African ◽  
Pressure Independent

Adiponectin and leptin are likely involved in the pathophysiology of rheumatoid arthritis (RA) and therefore potential new therapeutic targets. Adiponectin inhibition could be expected to enhance cardiovascular metabolic risk. However, it is unknown whether RA changes the influence of adipokines on cardiovascular metabolic risk. We determined whether RA impacts on the independent relationships of circulating leptin and adiponectin concentrations with cardiovascular risk factors and carotid intima-media thickness (cIMT) in 277 black African subjects from a developing population; 119 had RA. RA impacted on the relationships of adiponectin concentrations with lipid concentrations and blood pressure, independent of confounders including adiposity (interactionP<0.05). This translated into an association of adiponectin concentrations with more favorable lipid variables including HDL cholesterol (P=0.0005), non-HDL cholesterol (P=0.007), and triglyceride (P=0.005) concentrations, total cholesterol-HDL cholesterol (P=0.0002) and triglycerides-HDL cholesterol (P=0.0003) ratios, and higher systolic (P=0.0006), diastolic (P=0.0004), and mean blood pressure (P=0.0007) in RA but not non-RA subjects. Leptin was not associated with metabolic risk after adjustment for adiposity. The cIMT did not differ by RA status, and adipokine concentrations were unrelated to atherosclerosis. This study suggests that leptin and adiponectin inhibition may not alter overall cardiovascular risk and disease in RA.

scholarly journals Effect of Strawberry Intake for 4 Weeks on Vascular Endothelial Function and Blood Pressure in Adults with Moderate Hypercholesterolemia (P06-128-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Di Xiao ◽  
Leailin Huang Huang ◽  
Indika Edirisinghe ◽  
Britt Burton-Freeman
Keyword(s):  
Blood Pressure ◽  
Endothelial Function ◽  
Vascular Function ◽  
Daily Intake ◽  
Random Order ◽  
Vascular Endothelial ◽  
Vascular Endothelial Function ◽  
Freeze Dried ◽  
Pressure Independent ◽  
Hs Crp

Abstract Objectives The aim of this study is to investigate the effect of chronic strawberry intake on cardiovascular risk factors including fasting lipids concentrations, vascular endothelial function and blood pressure in middle-age overweight or obese individuals with moderate hypercholesterolemia. We hypothesized that 4-week strawberry intake would improve the lipids profile and concomitantly improve measures of vascular function. Methods In this randomized, double-blinded, controlled, crossover trial, thirty-four subjects (age 53 ± 1 years, BMI 31 ± 1 kg m-2, mean ± SD) consumed a strawberry beverage containing 25 gram freeze-dried strawberry powder or energy-matched control beverage in random order twice a day for 4 weeks. Treatment periods were separated by 4-week washout period. Fasting lipids, glucose, insulin, high sensitive c-reactive protein (hs-CRP), and postprandial flow-mediated dilation (FMD) and blood pressure, were measured at weeks 0, 4, 8 and 12. Results Fasting lipids, glucose, insulin, and hs-CRP did not differ between strawberry and control beverage interventions. In contrast, vascular function as measured by change in %FMD was significantly increased after strawberry compared to control after 4 weeks supplementation (4.3 ± 0.3% versus 3.6 ± 0.3%, respectively, p = 0.0096). In addition, %FMD was acutely increased from 0 to 1 hour after consuming strawberry beverage (p < 0.0001), which was consistent with reduced meal-induced increases in systolic blood pressure (SBP) postmeal (mean 2 hour changes in SBP after strawberry compared to control beverage, 2.3 ± 0.4 versus 3.4 ± 0.4 mmHg, p = 0.048). Conclusions Daily intake of strawberries may improve endothelial function and acute changes in blood pressure, independent of other metabolic changes, and may be considered a specific food/fruit to include in a heart-healthy diet in overweight or obese subjects with moderate hypercholesterolemia. Funding Sources California Strawberry Commission, Watsonville, CA, USA. Supporting Tables, Images and/or Graphs

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