Abstract:
:An index of peripheral vascular resistance, derived from directly measured arterial pressure, has been developed and tested in an animal model. Assuming a mono-exponential character for diastole, the time constant for direct arterial pressure decay in the central aorta was obtained with high-fidelity recording techniques from six anaesthetized dogs. Changes in peripheral resistance were induced by infusion of phenylephrine or nitroprusside. The time constant correlated well with resistance determined from 1-min averages of pressure divided by integrated electromagnetic flow (r = 0.845). A portable system used for direct arterial pressure recording in ambulant outpatients yielded a mean correlation of 0.822 with resistance. In a study of patients undergoing cardiac catheterization, a time constant obtained from the brachial artery (the site of pressure recording in the ambulant subjects) correlated well with the aortic time constant (n = 6, r = 0.964). The results of the present work suggest that the time constant derived from direct arterial pressure waveform may be a useful index in the evaluation of the peripheral vascular resistance. Furthermore, with the help of the portable system it might be used for the continuous monitoring of resistance changes in ambulatory subjects.
journal_name
J Hypertensjournal_title
Journal of hypertensionauthors
Walsh JT,Mehta SK,Topham WS,Goldberg ADdoi
10.1097/00004872-198512000-00009subject
Has Abstractpub_date
1985-12-01 00:00:00pages
631-7issue
6eissn
0263-6352issn
1473-5598journal_volume
3pub_type
杂志文章abstract:OBJECTIVE:Despite the widespread use of multivitamin supplements, little is known regarding their effects on blood pressure (BP) and the development of hypertension. We, therefore, sought to prospectively investigate how multivitamin use was associated with incident hypertension among middle-aged and older women. METH...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000973
更新日期:2016-08-01 00:00:00
abstract:OBJECTIVE:Functional sex differences are described in several vascular beds. In the case of renal vessels, sex differences could influence processes like regulation of blood pressure and ion balance. Angiotensin II and nitric oxide are important regulators of renal vascular tone. Females have higher nitric oxide syntha...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32835731dd
更新日期:2012-09-01 00:00:00
abstract:OBJECTIVES:Mechanisms involved in hypertension in homozygous mice for the defective endothelial nitric oxide synthase gene (eNOS-/-) have not been fully elucidated. As NO is a potent vasodilator agent and possibly promotes angiogenesis, we investigated whether vasoconstriction and/or microvascular rarefaction could exp...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200208000-00021
更新日期:2002-08-01 00:00:00
abstract::We have studied the norepinephrine (NE) uptake processes directly in synaptosomes isolated from the hypothalamus of both Dahl salt-sensitive (DS) and Dahl salt-resistant (DR) rats. Both DS and DR rats were divided into two dietary groups, one high salt diet group and one low salt diet group. NE uptake was highly sodiu...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198410000-00003
更新日期:1984-10-01 00:00:00
abstract:BACKGROUND:Left ventricular (LV) remodeling and aortic stiffness have independent predictive value for all causes and cardiovascular mortality. Because elastic properties of the arterial wall vary along the aortic pathway, we hypothesized that local and regional aortic stiffness could differently impact on LV remodelin...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001597
更新日期:2018-03-01 00:00:00
abstract:OBJECTIVE:Hypertensive rats are more sensitive to the pressor effects of acute ouabain than normotensive rats. We analyzed the effect of chronic ouabain (approximately 8.0 microg/day, 5 weeks) treatment on the blood pressure of spontaneously hypertensive rats (SHRs) and Wistar-Kyoto rats and the contribution of vascula...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32832a391f
更新日期:2009-06-01 00:00:00
abstract:OBJECTIVE:The contribution of salt intake to the pathogenesis of hypertension holds longstanding interest. Recent studies employed the sensitivity of blood pressure (BP) to salt intake as an intermediate phenotype. The validity of this approach relative to the homogeneity of sodium-sensitive hypertension was investigat...
journal_title:Journal of hypertension
pub_type: 杂志文章,多中心研究
doi:10.1097/00004872-200305000-00020
更新日期:2003-05-01 00:00:00
abstract::Haemorheological characteristics were measured in a group of 52 patients with essential arterial hypertension (HT), and were compared with those of a group of normotensive subjects. The relationships between the arterial blood pressure (BP), the echocardiographic indices of left ventricular hypertrophy (LVH), and the ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract:BACKGROUND:Arterial stiffness is an independent predictor of cardiovascular events and mortality in hypertensive patients. The influence of different antihypertensive drug classes on improving arterial stiffness beyond blood pressure reduction is not widely available. We aimed to determine whether the artery stiffness ...
journal_title:Journal of hypertension
pub_type: 杂志文章,meta分析
doi:10.1097/HJH.0b013e328346a583
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVE:To carry out a population-based evaluation of withdrawal of treatment in primary care using repeated ambulatory blood pressure monitoring (ABPM) assessment to avoid subjecting patients to prolonged periods of excess risk. METHOD:Patients from two community practices (total population 11 034 patients) being a...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199715120-00021
更新日期:1997-12-01 00:00:00
abstract:OBJECTIVE:To assess the contribution of the sympathetic nervous system to the hypertension in patients with longstanding essential hypertension. DESIGN:Overall sympathetic function, presynaptic adrenoceptors and neuronal re-uptake were examined after withdrawal of medication for at least 3 weeks in eight patients with...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1994-02-01 00:00:00
abstract:OBJECTIVE:Development of internally quenched fluorogenic substrates for sensitive and continuous assays of angiotensin I-converting enzyme (ACE). DESIGN:We synthesized internally quenched fluorogenic bradykinin-related peptides introducing Abz (ortho-aminobenzoic acid) and EDDnp (N-[2,4-dinitrophenyl]-ethylenediamine)...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199917050-00010
更新日期:1999-05-01 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:BACKGROUND:Few studies have directly compared the effects of different angiotensin receptor blockers (ARBs) on mechanisms involved in the pathogenesis of cardiovascular disease. METHODS:We studied the ability of different ARBs to inhibit the proliferation of vascular smooth muscle cells (VSMCs) and cardiac fibroblasts...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3282f56ba5
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVE:Nifedipine, an L-type calcium channel blocker, is widely used in the treatment of hypertension and coronary heart diseases, and also exhibits an antiplatelet activity. Activation of peroxisome proliferator-activated receptors (PPARs; α, β/δ, and γ) inhibits the platelet aggregation. Therefore, the purpose of ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000007
更新日期:2014-01-01 00:00:00
abstract::We have demonstrated high concentrations of inactive renin in mouse amniotic fluid compared with mouse plasma and other organs. Its molecular weight was similar to that of prorenin from the mouse submaxillary gland (42 000 daltons). The activated renin had a Km value of 1.48 greater than M which is identical to that o...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198410000-00012
更新日期:1984-10-01 00:00:00
abstract::The relationships between five erythrocyte cation transport systems (Na(+)-K+ pump, Na(+)-K+ cotransport, Na(+)-Li+ countertransport and Na+ and K+ passive permeabilities) and plasma lipids (total plasma cholesterol, high-density lipoprotein cholesterol and triglycerides) were investigated in 129 male adult subjects w...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199010000-00002
更新日期:1990-10-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that apelin protects against angiotensin II (Ang II)-induced cardiovascular fibrosis and vascular remodeling. METHODS AND RESULTS:Wild-type mice administered apelin or apelin along with Ang II exhibited less cardiovascular fibrosis and decreased plasminogen activator inhibitor type-1 (...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32834347de
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVE:BPH/2J hypertensive mice have an exaggerated sympathetic contribution to blood pressure (BP). Premotor sympathetic neurons within the rostroventrolateral medulla (RVLM) are a major source of sympathetic vasomotor tone and major site of action of the centrally acting sympatholytic agent, rilmenidine. The relat...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000036
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVES:Lower parental education is associated with higher adolescent blood pressure (BP). We examined the contribution of modifiable risk factors from infancy to adolescence that could potentially explain the link between parental education and SBP and DBP in the offspring. METHODS:In a prospective Chinese birth c...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001003
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVES:Our aims were to assess the progression rate of normotension and prehypertension to hypertension in Japan, and the effect of the new-onset hypertension on chronic kidney disease (CKD). METHODS:This was a nationwide study of 45 378 Japanese aged 40-74 years (mean age 60 years, 37% men) without hypertension o...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000344
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVES:To review, on a genome-wide scale, a linkage result obtained in an earlier candidate gene analysis in this same study sample, and to look for other possible contributing genetic loci predisposing to hypertension in this population. DESIGN:An affected sibpair linkage study with highly polymorphic genetic mar...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200018110-00008
更新日期:2000-11-01 00:00:00
abstract::The European Society of Hypertension and the European Society of Cardiology have started the preparation of the third edition of their joint guidelines on the management of arterial hypertension. The authors have focused on the new edition of the UK NICE guidelines to learn about the difficulties of disentangling evid...
journal_title:Journal of hypertension
pub_type: 社论
doi:10.1097/HJH.0b013e328351b4e4
更新日期:2012-04-01 00:00:00
abstract::This study was designed to assess the contribution of thromboxane (Tx) A2 to the pathogenesis of renal dysfunction in rats with angiotensin II (Ang II)-salt hypertension. Hypertension was induced in rats drinking 0.15 mol/l NaCl by infusion of Ang II (125 ng/min, intraperitoneally) for 12 days. Relative to values in w...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199001000-00012
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:A reduced cardiac output in chronic heart failure (CHF) evokes renal NaCl and water retention, and, therefore, activates mechanisms promoting natriuresis. Atrial natriuretic peptide (ANP) is one such factor. We hypothesized that another NaCl sensitive endogenous natriuretic factor, i.e., marinobufagenin (MBG...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200206000-00032
更新日期:2002-06-01 00:00:00
abstract:OBJECTIVE:We report the prevalence, awareness, treatment, and control of hypertension across four Middle Eastern countries (Iran, Occupied Palestinian Territory, Saudi Arabia, and United Arab Emirates), using a standardized and uniform method. METHODS:The Prospective Urban Rural Epidemiology study enrolled participant...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001326
更新日期:2017-07-01 00:00:00
abstract:OBJECTIVES:We aimed to determine the association of nonalcoholic fatty liver disease (NAFLD) with central and peripheral blood pressure (BP), in a general adolescent population and to examine whether associations are independent of adiposity. METHODS:Using cross-sectional data from a subsample (N = 1904) of a UK birth...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000445
更新日期:2015-03-01 00:00:00
abstract::This study determined the influence of baroreflex sensitivity (BRS) on the rate of urinary sodium excretion and plasma renin activity (PRA) in response to a saline infusion in conscious male rabbits specifically bred for high (Group I; n = 7) and low (Group II; n = 10) BRS and in seven control animals. Only Group II s...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199109000-00005
更新日期:1991-09-01 00:00:00
abstract:OBJECTIVE:To investigate the characteristics and expression of transforming growth factor (TGF)-beta receptor subtypes on vascular smooth muscle cells (VSMC) from spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto (WKY) rats. METHODS:The effects of TGF-beta 1 on DNA synthesis were evaluated by [3H]-th...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199508000-00003
更新日期:1995-08-01 00:00:00
abstract:OBJECTIVE:Preeclampsia is associated with an elevated risk of cardiovascular disease later in life. Women with a history of preeclampsia are at risk of developing hypertension as well as ischemic heart disease. Identification of women at the highest risk is important to initiate preventive strategies. We investigated w...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002497
更新日期:2020-10-01 00:00:00