Abstract:
OBJECTIVE:To evaluate the contribution of the haem oxygenase-carbon monoxide (CO) system to renal vascular tone in normotensive Wistar rats and in the stroke-prone spontaneously hypertensive rats (SHR-SPs). METHODS:An isolated perfused rat kidney preparation was used in which perfusion pressure/phenylephrine dose-vasoconstrictor responses were generated. Haemin was given 24 h previously, to induce haem oxygenase-1 (HO-1), and L-NAME (N-omega-nitro-L-arginine methyl ester) was given to block nitric oxide (NO) production. RESULTS:Haemin pretreatment attenuated the phenylephrine-induced rise in perfusion pressure (P < 0.05) but L-NAME had no effect on the magnitude of the renal vasoconstrictor responses to phenylephrine. This suggested that the effect of haemin incubation on renovascular responses did not involve NO production. Pretreatment of the rats with the haem oxygenase inhibitor, tin protoporphyrin IX (SnPP-IX) had no effect on either the basal tone or the phenylephrine-induced contractions in the renal vasculature. By contrast, the renovascular responses to phenylephrine in haemin-treated animals were restored following the coadministration of SnPP-IX. Haemin administration in the SHR-SPs caused a significantly greater reduction in the renovascular responses to phenylephrine compared to those in the normotensive animals (P < 0.05). CONCLUSIONS:Following induction of HO-1, the HO-CO system plays an important role in the regulation of renal responses to an adrenergically induced vasoconstrictor challenge. Moreover, the renal vascular bed of hypertensive animals exhibited a greater propensity to upregulate the HO-CO system, which may provide an important counteractive role against the elevation of blood pressure in hypertension.
journal_name
J Hypertensjournal_title
Journal of hypertensionauthors
Mustafa MR,Johns EJdoi
10.1097/00004872-200106000-00016subject
Has Abstractpub_date
2001-06-01 00:00:00pages
1105-11issue
6eissn
0263-6352issn
1473-5598journal_volume
19pub_type
杂志文章abstract:BACKGROUND:Recent cross-sectional studies have suggested that higher serum sodium levels may be a marker of elevated blood pressure. It is unclear whether serum sodium levels are related to the risk of developing hypertension in the community. METHODS:We investigated the association of serum sodium with longitudinal b...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32830fe4a5
更新日期:2008-11-01 00:00:00
abstract::The fall in blood pressure that is commonly observed when groups of hypertensive individuals are followed without treatment is usually ascribed to two sources: regression towards the mean and increasing familiarity of the subject with the assessment process. Any effect of the latter process could bias the results of c...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1983-06-01 00:00:00
abstract:OBJECTIVES:The present study aimed to assess the effect of the specific dipeptidyl peptidase IV (DPPIV) inhibitor sitagliptin on blood pressure and renal function in young prehypertensive (5-week-old) and adult spontaneously hypertensive rats (SHRs; 14-week-old). METHODS:Sitagliptin (40 mg/kg twice daily) was given by...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e328341939d
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Although 24-h urinary measure to estimate sodium and potassium excretion is the gold standard, it is not practical for large studies. We compared estimates of 24-h sodium and potassium excretion from a single morning fasting urine (MFU) using three different formulae in healthy individuals. M...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000122
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVES:Remodeling of small resistance arteries is an early sign of target organ damage in hypertension. Peripheral capillary morphology abnormalities in hypertension are not well studied. The study objective was to determine whether altered capillary morphology is associated with SBP, DBP, or both in individuals wi...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32833e113b
更新日期:2010-11-01 00:00:00
abstract:OBJECTIVE:Urinary excretion of angiotensinogen [urine angiotensinogen (UAGT)] has been proposed as a biomarker of intrarenal renin-angiotensin system activity. We investigated the association between UAGT and salt-sensitivity and potassium-sensitivity of blood pressure (BP) among Genetic Epidemiology Network of Salt Se...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000564
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:This study presents a reliable index inspired by the total variability concept of real analysis in mathematics, called average real variability (ARV), for the prognostic significance of blood pressure variability (BPV) overcoming the pitfalls of the commonly used standard deviation (SD). BACKGROUND:Recent s...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000160205.81652.5a
更新日期:2005-03-01 00:00:00
abstract:OBJECTIVE:To determine whether a diuretic can also reverse the clinical, systemic, renal and glomerular haemodynamic and pathological changes caused by nephrosclerosis. METHODS:Three groups of 20-week-old spontaneously hypertensive rats (SHR) were investigated: control male SHR; a similar group, administered 50 mg/l N...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199607000-00004
更新日期:1996-07-01 00:00:00
abstract:OBJECTIVES:Arterial stiffness is associated with excess morbidity and mortality, independently of other cardiovascular risk factors. Age is the main determinant responsible for arterial wall changes leading to arterial stiffening. Environmental and genetic factors may however influence the magnitude of the effects of a...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200103000-00008
更新日期:2001-03-01 00:00:00
abstract:OBJECTIVE:The new arterial hypertension guidelines by the 2017 American College of Cardiology (ACC)/American Heart Association (AHA) changed the definition of isolated diastolic hypertension (IDH). We assessed and compared in a Chinese population the IDH prevalence, newly defined by the 2017 ACC/AHA guidelines versus t...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002659
更新日期:2020-10-06 00:00:00
abstract:OBJECTIVES:When assessing arterial stiffness, heart rate (HR) and blood pressure (BP) are potential confounders. It appears that the HR/BP dependences of pulse wave velocity (PWV) and distensibility are different, even though both assess arterial stiffness. This study aims to compare aortic PWV as measured using pulse ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002608
更新日期:2021-01-01 00:00:00
abstract:OBJECTIVE:The objective of the present study was to assess the regression of left ventricular hypertrophy (LVH) during antihypertensive treatment, and its relationship with the changes in microalbuminuria. INDIVIDUALS AND METHODS:One hundred and sixty-eight previously untreated patients with echocardiographic LVH, 46 ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e328361461e
更新日期:2013-08-01 00:00:00
abstract:UNLABELLED:PURPOSE IDENTIFICATION: Inter-individual variability in blood pressure response to treatment is well documented, but a clinically useful means to distinguish responders from non-responders has been elusive. With the advent of new technologies and genomic knowledge, more investigators are seeking to identify ...
journal_title:Journal of hypertension
pub_type: 杂志文章,评审
doi:10.1097/01.hjh.0000173510.52987.68
更新日期:2005-07-01 00:00:00
abstract:OBJECTIVE:Neuropeptide W (NPW), an endogenous ligand for the G protein-coupled receptor 7 (GPR7), was first found to make important roles in central nerve system. In periphery, NPW was also present and regulated intracellular calcium homeostasis by L-type calcium channels. This study was designed to discover the effect...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000723
更新日期:2015-12-01 00:00:00
abstract::Fenoldopam, a dopamine-1 (D1) agonist, was administered by a 6-h intravenous infusion to patients with refractory hypertension [diastolic blood pressure (DBP) greater than 115 mmHg while on triple therapy] in order to achieve a fall in DBP of 30 mmHg. The evolution of blood pressure, heart rate, glomerular filtration ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198808000-00010
更新日期:1988-08-01 00:00:00
abstract:OBJECTIVE:To investigate whether and how renin-angiotensin inhibition attenuates renal injury seen in salt-induced hypertension in Dahl salt-sensitive (Dahl-S) rats. METHODS:Dahl-S rats fed a high-salt (4% sodium chloride) diet for 6 weeks were treated with the angiotensin converting enzyme (ACE) inhibitor alacepril o...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1994-08-01 00:00:00
abstract:OBJECTIVE:To explore the repercussion of cardiac denervation on the short-term blood pressure variability in humans, in order to assess the extent to which the variability of blood pressure is linked to the variability of heart rate. METHODS:Beat-to-beat blood pressure and RR interval time were recorded in 16 heart-tr...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1994-12-01 00:00:00
abstract:BACKGROUND:Left ventricular mass is associated with body size, obesity and blood pressure. Echocardiography is routinely used to estimate this parameter, which is usually indexed to body surface area to allow comparisons to be made between individuals and groups of different body size. However, in obese subjects, using...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199917040-00016
更新日期:1999-04-01 00:00:00
abstract:INTRODUCTION:Several renal denervation (RDN) systems are currently under investigation for treatment of hypertension by ablation of renal sympathetic nerves. The procedural efficacy of devices, however, is variable and incompletely understood. This study aimed at investigating procedural and anatomical predictors of RD...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001840
更新日期:2018-12-01 00:00:00
abstract:OBJECTIVE:The present study was designed to investigate the effect of nicardipine administration upon systolic blood pressure (SBP) and cardiac hypertrophy in spontaneously hypertensive rats (SHR). DESIGN:SBP, heart: and left ventricle: body weight ratios, the cross-sectional area of cardiocytes, and the ultrastructur...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199206000-00002
更新日期:1992-06-01 00:00:00
abstract:OBJECTIVES:Advanced diabetic nephropathy (DN) is characterized by a marked development of cardiovascular and renal disease. These patients are frequently managed by different health professionals with the consequence that the quality of care may differ substantially. To compare the management of cardiovascular risk fac...
journal_title:Journal of hypertension
pub_type: 杂志文章,多中心研究
doi:10.1097/01.hjh.0000239303.93872.31
更新日期:2006-08-01 00:00:00
abstract:OBJECTIVES:Endothelial dysfunction is associated to cardiovascular risk factors and predicts cardiovascular events. Peripheral arterial tonometry (PAT) is a novel noninvasive method to assess endothelial function. However, there is a paucity of data about its reproducibility. The aim of this study was to assess the fea...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e328362d913
更新日期:2013-10-01 00:00:00
abstract::: Phaeochromocytoma and paraganglioma (PPGL) are chromaffin cell tumours that require timely diagnosis because of their potentially serious cardiovascular and sometimes life- threatening sequelae. Tremendous progress in biochemical testing, imaging, genetics and pathophysiological understanding of the tumours has far-...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002438
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVE:To examine a possible involvement of a regulatory protein of Na+/H+ exchanger (NHE) in the increased renal NHE activity in spontaneously hypertensive rats (SHR), we investigated mRNA expression of inhibitory members of the NHE regulatory protein family, NHERF1 and NHERF2, in the kidney. DESIGN:Prehypertensiv...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200409000-00016
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:In previous studies we demonstrated that the administration of furosemide associated with L-arginine contributes to enhanced hypotension and induces greater water than electrolyte excretion, in both normal and expansion conditions. The aim of the present study was to elucidate the interaction between furosemi...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000125445.28861.8a
更新日期:2004-08-01 00:00:00
abstract:OBJECTIVE:Orthostatic hypotension is a common condition associated with adverse cardiovascular and cognitive prognosis. Screening for orthostatic hypotension consists of blood pressure measurements in supine (or sitting) and standing position during clinical consultations. As orthostatic hypotension is a poorly reprodu...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001986
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVE:To evaluate the consistency between a randomly recruited Western European population and the participants of the Framingham Heart Study, with respect to the rates and determinants of progression to hypertension. METHODS:Among the non-hypertensive individuals enrolled in the Flemish Study on Environment, Gene...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000242395.07473.92
更新日期:2006-09-01 00:00:00
abstract:OBJECTIVE:To compare the anti-hypertensive effect of combination therapy versus a single drug regimen schedule (dose-titration or switching to a different drug class) in type 2 diabetic hypertensive patients with inadequate blood pressure (BP) control on monotherapy. DESIGN:Prospective, randomized, open-fashion, paral...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004872-199917121-00022
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:A recent editorial published by Verma and Strauss, entitled 'Angiotensin receptor blockers and myocardial infarction', examined, through a partial analysis of individual trials, the use of angiotensin receptor blockers (ARBs) in a variety of clinical settings. This editorial was reported widely in the lay pr...
journal_title:Journal of hypertension
pub_type: 杂志文章,meta分析,评审
doi:10.1097/01.hjh.0000194114.12228.16
更新日期:2005-12-01 00:00:00
abstract:OBJECTIVE:Data from the Multiple Risk Factor Intervention Trial show an independent direct association between starch intake and blood pressure in American men at higher risk of coronary heart disease. Cross-sectional data from the International Study of Macronutrients and Micronutrients and Blood Pressure (INTERMAP) w...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32831a7294
更新日期:2009-02-01 00:00:00