Abstract:
BACKGROUND/AIMS:To identify the relationship between systemic and local hemodynamics, as well as segmental biomechanical properties in a musculocutaneous resistance artery during angiotensin-II hypertension and its recovery. METHODS:Rats were infused with angiotensin-II using implanted osmotic minipumps (ALZET 2ML4, 150 ng/kg/min) for 4 weeks. Measurements were made either immediately following infusion or after an additional 4-week recovery period. Parallel controls were created. Segmental geometry and blood flow were determined in vivo on microsurgically exposed segments of the saphenous arterial branch (350 mum). Pressure-radius plots of excised cylindrical segments were recorded by pressure arteriography. RESULTS:Eutrophic hypertensive wall remodeling developed, with reduced passive radius, increased wall thickness, elevated low-stress elastic modulus, reduced norepinephrine contraction, and reduced endothelium-mediated dilation. Relaxed wall geometry fully healed in 4 weeks of recovery, but an increased contractility and a reduced in vivo lumen persisted. Regional hemodynamic resistance correlated positively with systemic arterial pressure and wall thickness in vivo, and negatively with in vivo lumen size throughout these studies. CONCLUSION:A partial recovery of the biomechanical parameters was found. Healing of eutrophic hypertensive remodeling of the resistance artery wall is a complex biomechanical process, not a simple reversal of the original pathological sequel.
journal_name
Kidney Blood Press Resjournal_title
Kidney & blood pressure researchauthors
Nádasy GL,Várbíró S,Szekeres M,Kocsis A,Székács B,Monos E,Kollai Mdoi
10.1159/000285847subject
Has Abstractpub_date
2010-01-01 00:00:00pages
37-47issue
1eissn
1420-4096issn
1423-0143pii
000285847journal_volume
33pub_type
杂志文章abstract:BACKGROUND/AIMS:Hypertensive patients present with increased oxidative stress and frequently receive angiotensin II (ANGII) receptor type I blockers (ARB) for blood pressure (BP) reduction. Recent studies revealed an important role of ANGII in maintaining vascular oxidative homeostasis, including sustaining normal sodi...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000450562
更新日期:2016-01-01 00:00:00
abstract::Heart failure and chronic kidney disease share a number of risk factors and pathophysiological pathways. Renal insufficiency is common in patients with chronic heart failure (CHF). The aim of the study was to assess whether neutrophil gelatinase-associated lipocalin (NGAL) could represent a novel, sensitive marker of ...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
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更新日期:2009-01-01 00:00:00
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
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journal_title:Kidney & blood pressure research
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000350150
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abstract:BACKGROUND:Elevated serum uric acid experimentally stimulates renal vasoconstriction and activation of the renin- angiotensin system and consequently modulates erythropoietin (EPO) production. We used a dopamine-induced glomerular filtration response test (DIR) to assess whether elevated uric acid is associated with do...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
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abstract:BACKGROUND/AIMS:Arterial hypertension is one of the leading factors aggravating the course of chronic kidney disease (CKD). It seems that the novel parameters used in the assessment of the blood pressure (BP) load (i.e. central blood pressure, nighttime blood pressure) may be more precise in predicting the cardiovascul...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000489749
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章,评审
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章,评审
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更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:Hypertension in the elderly is commonly characterized by an elevation of pulse pressure. With regard to advanced arteriosclerosis and limited physical fitness, doubt was casted whether elderly patients still achieve relevant cardiovascular benefits by physical exercise. The present work examines the impact o...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章,随机对照试验
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更新日期:2007-01-01 00:00:00
abstract:BACKGROUND/AIMS:We examined the factors associated with blood pressure variability in a multi-ethnicity prospective study in China to gain more evidence to guide the prevention and management of hypertension through risk factor intervention. METHODS:A total of 318 consecutive adult subjects aged 29-94 years with suspe...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000477424
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND/AIMS:Analysis of gene expression in renal tissue is considered to be a diagnostic tool predicting the clinical course of glomerulonephritis. The present study quantified the relative transcript levels of VEGF, CTGF and HIF-1α in renal tissue to establish their relationship with some clinical variables in pat...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000355754
更新日期:2013-01-01 00:00:00
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000049428
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND/AIMS:Peritoneal dialysis (PD) has gained interest over the last decade as a viable option for early start dialysis. It is still unknown if shorter break-in periods and less time for proper patient evaluation and training could influence technique survival in comparison to planned-start PD. METHODS:A prospec...
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更新日期:2018-01-01 00:00:00
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000487903
更新日期:2018-01-01 00:00:00
abstract::Fibroblast growth factor 23 (FGF23) is released primarily from osteoblasts/osteocytes in bone. In cooperation with the transmembrane protein Klotho, FGF23 is a powerful inhibitor of 1α 25OH Vitamin D Hydroxylase (Cyp27b1) and thus of the formation of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3). As 1,25(OH)2D3 up-regulates ...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章,评审
doi:10.1159/000495393
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND/AIM:Calcifications of large arteries are frequent in chronic kidney disease (CKD) and may contribute to the high cardiovascular risk in this population. The aim of this study was to examine whether abdominal aortic calcification volume (AACV) was a predictor of the rate of decline in glomerular filtration ra...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000501687
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abstract::Glomerulosclerosis and tubulointerstitial fibrosis are the hallmarks of chronic renal diseases. In the present study, we have investigated the potential involvement of various proteinases in these alterations in the model of puromycin aminonucleoside (PAN) nephrosis. Two groups of male Wistar rats were given either th...
journal_title:Kidney & blood pressure research
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更新日期:1999-01-01 00:00:00
abstract:BACKGROUND:Vascular accesses (especially polytetrafluoroethylene grafts) with a permanently low flow (Qa <600 ml/min) are prone to thrombosis and thus have short patency. The reason for a permanently low flow is usually medial calcinosis of the inflow artery in diabetics. We retrospectively studied the long-term patenc...
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2008-01-01 00:00:00
abstract:BACKGROUND/AIMS:Lipopolysaccharides (LPS) binding to Toll-like receptor 4 (TLR4) activate NADPH oxidase gp91 subunit-mediated inflammation and oxidative damage. Recognizing the high binding affinity of sialic acid (SA) with LPS, we further explored the preventive potential of SA pretreatment on LPS-evoked acute renal f...
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doi:10.1159/000443430
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND/AIMS:This experimental study was designed to investigate protective and therapeutic effects of Dexpanthenol (Dxp), an alcoholic analogue of pantothenic acid, on kidney damage induced by ischemia-reperfusion (I/R) in rats. METHODS:Forty rats were randomly divided into a control group and 4 I/R groups (1 h is...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000343411
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND/AIMS:Chronic kidney disease (CKD) is one of the major complications of hypertension. It is not only associated with the future burden of end-stage renal disease but also affects mortality and cardiovascular outcomes caused by hypertension. To help understand the pathogenesis and early prevention of progressi...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000443443
更新日期:2016-01-01 00:00:00
abstract:INTRODUCTION:Cardiovascular disease is one of the main causes of morbidity and mortality in patients with autosomal dominant polycystic kidney disease (ADPKD). Autonomic dysfunction is associated with an increased risk for all cardiovascular events in the general population and can be evaluated with heart rate variabil...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000502419
更新日期:2019-01-01 00:00:00
abstract:UNLABELLED:Anaemia is frequently found in patients with chronic heart failure (CHF) and has been associated with an increase in mortality and morbidity, impaired cardiac and renal function and a reduced quality of life (QoL) compared with non-anaemic CHF patients. Correction of anaemia with recombinant human erythropoi...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000081621
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Magnoline is an active ingredient of magnolia fargesii with anti-inflammatory and anti-platelet effects. The objective is to explore the renoprotection of magnoline in diabetic rats and its effects on P-selectin. METHODS:Thirty-six rats were randomized into 4 groups-normal control group (C), d...
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000350146
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND/AIMS:Aortic arch calcification (AoAC) is frequently detected in maintenance hemodialysis (MHD) patients and is associated with cardiovascular and all-cause mortality. We investigated the factors associated with AoAC and analyzed the relationship between the factors including bone-derived biomarkers and AoAC....
journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000494441
更新日期:2018-01-01 00:00:00
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journal_title:Kidney & blood pressure research
pub_type: 杂志文章
doi:10.1159/000368467
更新日期:2014-01-01 00:00:00