Abstract:
BACKGROUND:A cardiac angiotensin II-generating system has been suspected to be involved in various cardiac pathological conditions. Both angiotensin converting enzyme and human chymase can convert angiotensin I to angiotensin II. OBJECTIVE:To clarify the relative contributions of these two enzymatic pathways to angiotensin II generation in vivo. METHODS:We assessed the expression levels of messenger RNA (mRNA) for collagen type I alpha, transforming growth factor-beta(1), brain natriuretic peptide, angiotensin converting enzyme and chymase in right atrial appendages by competitive polymerase chain reaction and Northern blot analyses. Correlations among the concentrations of these mRNA were analysed to obtain insight that might be important in understanding the formation of angiotensin II in atrial tissue. RESULTS:The collagen type I alpha and brain natriuretic peptide mRNA concentrations were correlated significantly to the mean pulmonary arterial pressure. Multivariate regression analysis revealed that the collagen type I alpha mRNA concentration could be explained in terms of the brain natriuretic peptide (P = 0.0005) and angiotensin converting enzyme (P = 0.0084) mRNA concentrations (r = 0.598, P < 0.0001). The chymase mRNA concentration had no significant correlation to the collagen type I alpha mRNA concentration. Moreover, multiple regression analysis revealed that the transforming growth factor-beta(1) mRNA concentration could be explained in terms of the angiotensin converting enzyme mRNA concentration alone (r = 0.424, P = 0.014). CONCLUSIONS:The present results suggest that the level of angiotensin converting enzyme affects the tissue angiotensin II level in human atria; however, we could obtain no evidence that chymase is important in determining the tissue angiotensin II level.
journal_name
J Hypertensjournal_title
Journal of hypertensionauthors
Ohmichi N,Iwai N,Kinoshita Mdoi
10.1097/00004872-199715090-00003subject
Has Abstractpub_date
1997-09-01 00:00:00pages
935-43issue
9eissn
0263-6352issn
1473-5598journal_volume
15pub_type
杂志文章abstract:BACKGROUND:Constitutional hypotension (CHT) is defined as a SBP below 105 mmHg. As autonomic-related symptoms are frequently reported in CHT, these symptoms suggest that the cardiovascular autonomic control is perturbed in individuals with CHT. METHODS:We investigated the autonomic cardiovascular control of 15 women w...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001790
更新日期:2018-10-01 00:00:00
abstract:BACKGROUND:Enhanced oxidative stress has been observed in hypertension, but the underlying mechanism has not been fully clarified. OBJECTIVE:To study the relationship between oxygen free radicals and hypertension, using platelets as a tool to measure the cellular production of superoxide anion (O2). DESIGN:Forty pati...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004872-200406000-00016
更新日期:2004-06-01 00:00:00
abstract:OBJECTIVES:Recent epidemiological studies have reported inverse associations between vitamin D status and blood pressure. The study aim is to determine if exposure to ultraviolet B radiation, which synthesizes vitamin D, lowers blood pressure, compared with ultraviolet A radiation. METHODS:Men and women (n = 119) with...
journal_title:Journal of hypertension
pub_type: 杂志文章,随机对照试验
doi:10.1097/HJH.0b013e328349666d
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVE:To investigate whether the clinic-daytime blood pressure difference can provide information on vascular reactivity to stress comparable to that of simple noninvasive stimuli such as a cold pressor test and isometric exercise, and whether there is any relationship between this blood pressure difference and non...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199917030-00005
更新日期:1999-03-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that vascular beta 2-adrenoceptor hyporesponsiveness in spontaneously hypertensive rats (SHR) is not induced by increased blood pressure or venous hypertrophy. DESIGN:We compared the attenuating effects or isoprenaline, sodium nitroprusside and verapamilon the portal veins from Wistar-...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199509000-00013
更新日期:1995-09-01 00:00:00
abstract:OBJECTIVE:To examine in older individuals at high cardiovascular risk whether following a Mediterranean diet decreased the necessity of antihypertensive drugs and modulated their associated cardiovascular risk. METHODS:In the PREvención con DIeta MEDiterránea study, we assessed whether volunteers randomly allocated to...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002765
更新日期:2021-01-25 00:00:00
abstract::The effect of haemorrhagic hypotension on plasma catecholamine levels was studied in anesthetized normotensive and DOCA-salt hypertensive rats. The basal levels of plasma norepinephrine (NE) were significantly higher in DOCA-salt hypertensive rats than in normotensive rats. Moreover, the elevations in plasma NE and ep...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198903000-00011
更新日期:1989-03-01 00:00:00
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-vaso...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200106000-00016
更新日期:2001-06-01 00:00:00
abstract::Recent investigations have delineated the renal microvascular responsiveness to pressure, by using isolated afferent arterioles, juxtamedullary nephrons, and isolated perfused hydronephrotic kidneys. Both afferent arterioles and interlobular arteries (ILA) manifest pressure-dependent vasoconstrictor responses to eleva...
journal_title:Journal of hypertension
pub_type: 杂志文章,评审
doi:10.1097/00004872-199612000-00002
更新日期:1996-12-01 00:00:00
abstract:OBJECTIVES:To assess the expression of early cardiac genes, implicated in the hypertrophic growth response of the adult heart, in peripheral blood mononuclear cells in patients with essential hypertension and its relationship to ambulatory blood pressure monitoring (ABPM) parameters and to echocardiographic left ventri...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3283424bc4
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVE:To investigate the effect of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers on pneumonia hospitalization in patients with stroke history in Taiwan. METHODS:We conducted a case-crossover study using the National Health Insurance Research Database in Taiwan during the period from...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e328357a87a
更新日期:2012-11-01 00:00:00
abstract:BACKGROUND:Choice of antihypertensive drugs is also based on the expected burden of adverse events associated with each class of agents, and we have recently identified treatment discontinuation for adverse events as a measure of treatment tolerability frequently reported in randomized controlled trials (RCTs). OBJECT...
journal_title:Journal of hypertension
pub_type: 杂志文章,meta分析,评审
doi:10.1097/HJH.0000000000001052
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND:Across ethnicities, offspring of hypertensive parents (OH) have higher risk of hypertension than offspring of normotensive parents (ON). Sympathetic hyperactivity and reduced nitric oxide availability have been reported in normotensive OH; but the role of vasodilator cyclooxygenase (COX) products is unclear....
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001794
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVE:Recent studies have shown that the heptapeptide angiotensin-(1-7) [Ang-(1-7)] exerts important vasoactive actions and can act as an endogenous physiological antagonist of angiotensin II (Ang II) within the renin-angiotensin system (RAS). The present study was performed to evaluate the effects, first, of chron...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32832f0d06
更新日期:2009-10-01 00:00:00
abstract:BACKGROUND:Little data is available concerning the prognostic implications of renal function abnormalities, their evolution over time and the effects of nifedipine on such abnormalities in patients with stable angina pectoris. METHODS:The previously published ACTION trial compared long-acting nifedipine GITS 60 mg onc...
journal_title:Journal of hypertension
pub_type: 杂志文章,随机对照试验
doi:10.1097/HJH.0b013e3281c49d93
更新日期:2007-08-01 00:00:00
abstract:OBJECTIVE:In some patients with aortic stenosis left-ventricular hypertrophy exceeds what is needed to sustain the hemodynamic load imposed by the aortic stenosis, a condition named inappropriately high left-ventricular mass (iLVM). Although iLVM is associated with increased mortality after aortic valve replacement, pr...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/HJH.0b013e32834f0b00
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to investigate the haemodynamic effects of hormonal changes during the menstrual cycle in 11 hypertensive women aged between 29 and 38 years. DESIGN:In randomized order, the subjects were examined on days 2-7 (follicular phase) and on days 20-24 (luteal phase). All medication was wit...
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:1992-08-01 00:00:00
abstract:OBJECTIVES:To compare the reproducibility of clinic and ambulatory blood pressure measurements in elderly hypertensive subjects. SUBJECTS:Twenty-two untreated elderly hypertensives, with a clinic systolic blood pressure (SBP) > 160 mmHg and/or diastolic blood pressure (DBP) > 95 mmHg, and a mean age of 76 years (range...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199305000-00014
更新日期:1993-05-01 00:00:00
abstract:OBJECTIVES:The long-term consequences of extreme prematurity are becoming increasingly important, given recent improvements in neonatal intensive care. The aim of the current study was to examine the cardiovascular consequences of extreme prematurity in 11-year-olds born at or before 25 completed weeks of gestation. M...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e328347e333
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVE:To examine the association of blood pressure (BP) with cardiovascular mortality in real-world settings and investigate whether that association varied by use of antihypertensive medication at baseline. METHODS:Data from 27 728 Japanese men and women, aged 40-79 years, free of stroke, coronary heart disease, ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002073
更新日期:2019-07-01 00:00:00
abstract:BACKGROUND:The aldosterone synthase gene (CYP1B2) locus is a candidate region involved in the development of hypertension. OBJECTIVE:To study the relationship between the C-344T CYP1B2 polymorphism, plasma aldosterone, renin activity and blood pressure in a multi-ethnic population. DESIGN:Population-based, cross-sect...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200410000-00011
更新日期:2004-10-01 00:00:00
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:OBJECTIVES:Visit-to-visit variability of blood pressure (VVV of BP) is an important independent risk factor for premature death and cardiovascular events, but relatively little is known about this phenomenon in patients with chronic kidney disease (CKD) not yet on dialysis. METHODS:We conducted a retrospective study i...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000000779
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:Similar to cancer, pulmonary arterial hypertension (PAH) is characterized by vascular remodeling, which leads to obliteration of the small pulmonary arteriole, with marked proliferation of pulmonary artery smooth muscle cells (PASMC) and/or endothelial cells dysfunction. Aberrant expression of tumor suppresso...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001475
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Wide pulse pressure is a potent risk factor for atherosclerotic disease, and hypertension is induced by habitual alcohol drinking. This concise study investigated whether age affects the relationship between alcohol drinking and pulse pressure. METHODS:The participants were 99 661 male workers (20-69 years ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e3280895b69
更新日期:2007-05-01 00:00:00
abstract::We have studied the effect of parathyroidectomy on the systolic blood pressure, cardiovascular reactivity and the contractile response of isolated aorta to norepinephrine in the genetically hypertensive Lyon rat strain (LH), parathyroidectomized hypertensive Lyon rats (LH-PTX) and parathyroidectomized hypertensive Lyo...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199012000-00007
更新日期:1990-12-01 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:OBJECTIVE:To assess the dilatory effectiveness of nitric oxide donors in resistance arteries of patients with arterial hypertension in comparison with that in those of normotensive controls. BACKGROUND:Endothelium-dependent vasodilation has been demonstrated to be impaired in arterial hypertension. Besides disturbance...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199607000-00014
更新日期:1996-07-01 00:00:00
abstract:OBJECTIVE:We investigated the responses of mean arterial pressure and renal blood flow to intravenous and intrarenal angiotensin II, plasma and kidney angiotensin II concentrations and renal angiotensin receptor subtype 1 protein expression, and renal functional responses to intravenous and intrarenal angiotensin recep...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000174972.46663.5e
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:To examine the effect on quality of life in hypertensive men of a multiple risk factor intervention programme compared with that of usual care. DESIGN:A prospective, open, randomized, parallel-group study with allocation either to a comprehensive multiple risk factor modification programme or to usual care. ...
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:1995-12-01 00:00:00