Abstract:
:We have previously reported that pressor doses of angiotensin II induce atrial natriuretic factor (ANF) release. Since the number of glomerular and vascular ANF receptors may vary inversely with plasma ANF levels, we investigated whether they are modified by angiotensin II. Male rats were infused intraperitoneally for 7 days with either a non-pressor (200 ng/kg per min) or a pressor (800 ng/kg per min) dose of angiotensin II. Sham-infused animals served as controls. Blood pressure and plasma C- and N-terminal ANF were higher, and atrial ANF concentrations lower, in pressor than in either non-pressor or sham-infused groups. Glomerular ANF receptor density was lower in pressor than in either non-pressor or sham-infused animals. The production of cyclic guanosine monophosphate by isolated glomeruli was significantly lower in pressor than in either non-pressor or sham-infused groups. Vascular ANF receptor density was lower in pressor than in either sham-infused or non-pressor rats. No difference in affinity was observed in any group for either glomerular or vascular ANF receptors. Neither the density nor the affinity of glomerular and vascular ANF receptors were affected by prior washing of the membranes with an acid solution (pH 5.0). Irreversible cross-linking of 125I-ANF followed by sodium dodecylsulfate-polyacrylamide gel electrophoresis in reducing conditions and autoradiography demonstrated that both high- and low-molecular weight receptors were downregulated in glomerular membranes, but only the low-molecular weight receptor was reduced in vascular membranes after a high-dose infusion of angiotensin II. We conclude that angiotensin II induces a true downregulation of its glomerular and vascular receptor subtypes, probably by increasing plasma ANF levels. A direct or indirect effect of angiotensin II on ANF receptor regulation cannot be eliminated, however.
journal_name
J Hypertensjournal_title
Journal of hypertensionauthors
Gauquelin G,Schiffrin EL,Garcia Rsubject
Has Abstractpub_date
1991-12-01 00:00:00pages
1151-60issue
12eissn
0263-6352issn
1473-5598journal_volume
9pub_type
杂志文章abstract:OBJECTIVE:To evaluate the prognostic significance of cardiovascular risk factors including 24-h ambulatory blood pressure level and rhythm for all-cause mortality in type 2 diabetic patients. METHODS:In a prospective observational study, 104 patients with type 2 diabetes were followed: 51 patients with diabetic nephro...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3282f06428
更新日期:2007-12-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that combination therapy might be a powerful tool to reduce blood pressure variability (BPV) in the treatment of hypertension. METHODS:In chronic studies, male spontaneously hypertensive rats were given drugs in their rat chow for 18 weeks (n = 9 or 10 for each group of rats). Doses we...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3282ef547f
更新日期:2007-11-01 00:00:00
abstract:OBJECTIVE:Underlying pathophysiology of orthostatic hypotension has been poorly understood. We hypothesized that aortic pulse pressure (APP) reflecting aortic stiffness may be involved in the development of orthostatic hypotension. METHODS:A total of 200 patients (age 64.3 ± 10.9 years, 62.5% men) who underwent invasi...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002113
更新日期:2019-10-01 00:00:00
abstract:BACKGROUND:International recommendations have classified brachial blood pressure (BP) in subgroups enabling better cardiovascular risk stratification. Central BP is an independent predictor of cardiovascular risk, differing from brachial BP through the predominant influence of arterial stiffness and wave reflections. C...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3282f16a9c
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:Corticotrophin (ACTH)-induced hypertension in the rat is prevented by L- but not D-arginine. We examined the effects of exogenous corticosterone in the male Sprague Dawley (SD) rat to determine whether ACTH-induced hypertension is mediated by corticosterone. METHODS:Exogenous corticosterone (10, 20 or 40 mg/...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200018120-00020
更新日期:2000-12-01 00:00:00
abstract:OBJECTIVES:To assess the impact of various criteria used to define hypertension in community surveys on estimates of prevalence, treatment and control. In particular, this paper examines the effect of using mean versus minimum values; one, two or three examinations; and three different blood pressure levels. DESIGN:A ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199715030-00004
更新日期:1997-03-01 00:00:00
abstract:OBJECTIVES:To study the relation between the blood pressure and the neurocognitive function within the full adult age range in a large population sample. DESIGN:A cross-sectional study of 936 healthy adults who were recruited from a register of family practices, stratified for age (24-81 years), sex, and occupational ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199715100-00004
更新日期:1997-10-01 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:DESIGN:Because of uncertainties regarding the complete antihypertensive mechanism of action of beta-adrenoceptor antagonists, the present study determined whether vagal afferent neurons of humans and rats possess beta-adrenoceptors. Such a location would provide an appropriate target for beta-blockers to modulate neuro...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199506000-00009
更新日期:1995-06-01 00:00:00
abstract:OBJECTIVES:To investigate the effects of the interaction between adenosine receptors and renal nerves on urinary sodium excretion and glomerular filtration rate. METHODS AND DESIGN:The effects on water and sodium excretion and glomerular filtration rate of A1 [2-chloro-N6-cyclopentyl-adenosine (CCPA)] and A2 [2-hesiny...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199715120-00090
更新日期:1997-12-01 00:00:00
abstract:OBJECTIVE:Smoking is a risk factor for increased carotid artery intima-media thickness (IMT). The apolipoprotein E (apoE) 4 allele has been associated with cardiovascular diseases, but the role of apoE in regard to intima-media thickness (IMT) has remained controversial. The objective was to investigate whether there i...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200212000-00015
更新日期:2002-12-01 00:00:00
abstract:OBJECTIVE:To investigate methods to diagnose renal artery stenosis (RAS) among the general hypertensive population. METHODS:We studied the value of clinical and biochemical characteristics at the outpatient clinic to identify subjects with a renal artery narrowing of more than 50% of the luminal surface among 1047 hyp...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1996-08-01 00:00:00
abstract:BACKGROUND:Obstructive sleep apnea (OSA) has several negative effects on the heart including increase in myocardial end-systolic stress, venous return and sympathetic activity, all potential stimuli of left ventricular (LV) hypertrophy. The impact of the severity of OSA on LV geometry is unknown. We hypothesized that O...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/hjh.0b013e328336c90a
更新日期:2010-05-01 00:00:00
abstract:BACKGROUND:Hypertension is associated with endothelial dysfunction characterized by decreased endothelium-dependent relaxations and increased endothelium-dependent contractions. Angiotensin converting enzyme inhibitors and thromboxane A2 receptor antagonists decreased the endothelium dysfunction in hypertensive animals...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199715060-00007
更新日期:1997-06-01 00:00:00
abstract:OBJECTIVE AND METHODS:The vasoactive properties of P1,P4-diadenosine tetraphosphate (Ap4A) were studied by measuring the effects of perfusion pressure of a rat isolated perfused kidney. RESULTS:The vasoconstrictive response to Ap4A was mediated to a large extent to a P2X receptor which could be shown by inhibition wit...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199816121-00013
更新日期:1998-12-01 00:00:00
abstract:OBJECTIVE:Endothelial dysfunction and arterial stiffness are early vascular alterations, linked to oxidative stress and inflammation, with prognostic significance in essential hypertensive patients. P2X7 receptors (P2X7R), responding to extracellular ATP, are encoded by a highly polymorphic gene and modulate inflammato...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3283653ff5
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVE:Abnormal vascular reactivity contributes to the pathophysiology of hypertension and hypertension-related organ damage. As the dietary content of fatty acids may affect the vascular responses, we investigated the relationship of endothelium-independent and endothelium-dependent vasodilation with the fatty acid...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000495
更新日期:2015-05-01 00:00:00
abstract::Hypertensive disease is known to increase the risks in connection with acute changes in blood pressure due to the presence of pronounced structural as well as functional changes in the cardiovascular system. In the present study the metabolic consequences of fixed haemorrhagic hypotension [mean arterial pressure (MAP)...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198310000-00005
更新日期:1983-10-01 00:00:00
abstract::Blood pressure was measured in 864 young people aged 16-24 years, 8 years after both of their parents had their blood pressures measured as part of the screening phase of the Medical Research Council Mild Hypertension Trial. Only 29% of offspring with a conventional 'family history of hypertension', defined in terms o...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:High blood pressure is common in acute stroke and is associated independently with poor outcome. Lowering blood pressure might improve outcome, provided it does not reduce cerebral blood flow in the presence of dysfunctional cerebral autoregulation. METHODS:We performed a systematic review of clinical contro...
journal_title:Journal of hypertension
pub_type: 杂志文章,meta分析
doi:10.1097/HJH.0b013e3282fbd240
更新日期:2008-06-01 00:00:00
abstract:OBJECTIVE:Reduction in capillary density or rarefaction is a hallmark of essential hypertension. We measured the retinal capillary density using noninvasive optical coherence tomographic angiography (OCT-A) in adults with treated systemic hypertension and determined possible correlations with ambulatory blood pressure ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001916
更新日期:2019-03-01 00:00:00
abstract::The effect of xipamide on the intracellular concentration and transmembrane fluxes of Na+ and K+ was studied in 12 normal male subjects, using a double-blind cross-over design. After a run-in period on placebo for 1 week, the subjects were treated with either placebo (n = 6) or xipamide 20 mg once a day (n = 6) for 16...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004872-198808000-00007
更新日期:1988-08-01 00:00:00
abstract::Systolic (SBP), diastolic (DBP) and mean [MBP = diastolic + 1/3 (systolic - diastolic)] blood pressures were compared as predictors of all causes of death (ALL) and of deaths from atherosclerotic cardiovascular disease (ACVD) in 2480 men, aged 40-59 years, belonging to three cohorts followed up for 20 years. Both univ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198907000-00011
更新日期:1989-07-01 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:BACKGROUND:Angiotensin-converting enzyme (ACE) insertion/deletion (I/D) polymorphism-related differences in ACE concentration do not result in differences in angiotensin levels. METHODS AND RESULTS:To investigate whether this relates to differences in the contribution of the ACE C-domain and N-domain, we quantified, u...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3282f465d2
更新日期:2008-04-01 00:00:00
abstract:OBJECTIVE:Night-time ambulatory blood pressure (nABP) is the most important aspect of the blood pressure profile in terms of prognosis. Novel low-cost home monitors allow automated night-time blood pressure monitoring (nHBP). This study reviewed the evidence on the association of nHBP with nABP and preclinical organ da...
journal_title:Journal of hypertension
pub_type: 杂志文章,meta分析,评审
doi:10.1097/HJH.0000000000001189
更新日期:2017-03-01 00:00:00
abstract::The concentrations of neuropeptide Y immunoreactivity (NPY-ir) were measured in the cortex and cervical, thoracic and lumbar spinal cord of 8-, 18- and 31-week-old normotensive Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHR). This peptide was measured using a highly sensitive and specific radio-immun...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198608000-00012
更新日期:1986-08-01 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:PURPOSE:Cardiovascular reactivity to mental stress has been used as a tool to predict short-term hypertension risk in adults but the impact of cardiovascular reactivity in childhood on hypertension in adulthood is unknown. Using the 1970 British Cohort study, we examined the association between pulse rate reactivity in...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001023
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVE:To evaluate endothelium-dependent vascular function in obstructive sleep apnoea patients. DESIGN AND METHODS:Forearm blood flow and vascular resistance were studied in eight normotensives and eight obstructive sleep apnoea patients and also in eight normotensive and eight hypertensive controls after graded b...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199605000-00006
更新日期:1996-05-01 00:00:00