Abstract:
BACKGROUND:Left ventricular (LV) hypertrophy, arterial hypertension and end-stage renal disease (ESRD) are associated with deranged cardiac parasympathetic regulation and increased cardiovascular risk. These conditions often co-exist but little is known about the relative contribution of LV mass, arterial blood pressure and ESRD to impaired cardiac vagal tone. We evaluated the vagal tachycardic reserve (VTR) in subjects with normal renal function (age 58.4 +/- 6.6 years, n = 19) and in patients under chronic hemodialysis (HD) (age 62.6 +/- 13.2 years, n = 30) having wide ranges of LV mass and blood pressure. METHODS:VTR was estimated from the tachycardic response to atropine (15 microg/kg intravenously) administered during a dipyridamole-atropine stress-echo test performed as part of the diagnostic work-up for identification of inducible myocardial ischemia. LV hypertrophy (defined as LV mass index > 125 g/m2 in both genders) was present in 20 HD patients and in nine control patients. Only patients free of inducible myocardial ischemia were included in the study. RESULTS:The atropine-mediated tachycardia was: (i) significantly smaller in HD patients than in control patients (34.7 +/- 7.6 versus 60.8 +/- 10.5 beats/min, P < 0.01); (ii) independently and inversely related to LV mass (multiple regression; partial coefficients, -0.139 in HD patients and -0.382 in controls, both P < 0.01) and to mean blood pressure (-0.171 in HD patients and -0.268 in controls, both P < 0.01). CONCLUSIONS:LV mass is the strongest (inverse) determinant of VTR. Blood pressure as well as the patient's renal status are also independent correlates of VTR, and the concomitance of LV hypertrophy and ESRD exacerbates the impairment of VTR.
journal_name
J Hypertensjournal_title
Journal of hypertensionauthors
Mircoli L,Rivera R,Bonforte G,Fedele L,Genovesi S,Surian M,Ferrari AUdoi
10.1097/00004872-200308000-00020subject
Has Abstractpub_date
2003-08-01 00:00:00pages
1547-53issue
8eissn
0263-6352issn
1473-5598journal_volume
21pub_type
杂志文章abstract::Left ventricular hypertrophy (LVH), despite its adaptive nature, increases cardiovascular morbidity and mortality. Novel approaches for protection against pathological heart remodelling are presented in this supplement. Melatonin diminishes myocardial fibrosis in rats exposed to continuous light and N-nitro-L-arginine...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000388487.43460.db
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVES:To investigate the mechanism of angiotensin II-induced apoptosis in cultured cardiomyocytes by determining which receptor subtype is involved, and what is the relationship between intracellular Ca2+ changes and apoptosis. DESIGN AND METHODS:Neonatal rat cardiomyocytes were pretreated with either the AT1 ant...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200109000-00022
更新日期:2001-09-01 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::The effects of essential fatty acid deficiency (EFAD) on vascular reactivity to vasoconstrictor stimuli were studied in rat autoperfused hindquarters. Weanling male Sprague-Dawley rats (aged 21 days) were fed diets containing 8% (weight/weight) of stearax plus 2% safflower oil (control diet) or 10% stearax (EFAD diet)...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1988-02-01 00:00:00
abstract:OBJECTIVE:We examined whether the efficacy of low-dose acetylsalicylic acid (aspirin) for primary prevention of cardiovascular events is influenced by blood pressure (BP) using data from patients aged 60-85 years with hypertension, dyslipidemia, and/or diabetes, but without cardiovascular disease of the Japanese Primar...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000002034
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVE:Insulin-mediated vasodilation has been shown to be impaired with hypertension and aggravated by dietary sodium restriction. Whether vascular insulin resistance in this setting could be improved by antihypertensive therapy was unknown. Therefore, we determined the effect of therapy with an angiotensin-converti...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004872-200101000-00015
更新日期:2001-01-01 00:00:00
abstract::Two formulations of felodipine, conventional and extended release (ER) tablets, were compared in a double-blind, crossover study of patients whose blood pressure was not being controlled using metoprolol 100 mg once daily. Nineteen patients with a supine diastolic blood pressure greater than or equal to 95 mmHg after ...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验,评审
doi:10.1097/00004872-198908000-00008
更新日期:1989-08-01 00:00:00
abstract::Fish and fish oils have been reported to reduce blood pressure in normotensives and untreated hypertensives. The present study examined the effect of dietary supplementation with fish oil on blood pressure in 20 treated hypertensives with controlled blood pressures who continued their usual antihypertensive drug treat...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004872-199004000-00007
更新日期:1990-04-01 00:00:00
abstract:OBJECTIVE:Angiotensin (Ang) II increases reactive oxygen species (ROS), decreases nitric oxide (NO) bioavailability and promotes cardiovascular remodeling. ROS have been identified as critical second messengers of the trophic responses by Ang II. In rats with Ang II-induced hypertension, we investigated the role of ROS...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000179513.71018.09
更新日期:2005-09-01 00:00:00
abstract:BACKGROUND:Mineralocorticoid receptor antagonists are increasingly used in patients with treatment-resistant hypertension (TRH). There is experimental evidence for blood pressure (BP) independent effects of mineralocorticoid receptor blockade on cardiovascular target organ damage. We hypothesized that low-dose eplereno...
journal_title:Journal of hypertension
pub_type: 杂志文章,随机对照试验
doi:10.1097/HJH.0000000000001264
更新日期:2017-05-01 00:00:00
abstract::Basal platelet function was measured in 35 40-year-old men with untreated mild essential hypertension and compared with 44 age-matched normotensive men. The groups differed significantly with respect to platelet size in venous blood (hypertensive, 7.46 +/- 0.10 X 10(-15) l versus normotensive, 7.11 +/- 0.09 X 10(-15) ...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1987-08-01 00:00:00
abstract:OBJECTIVE:The effect of nifedipine, a 1,4-dihydropyridine calcium antagonist, on the expression of monocyte chemoattractant protein 1 (MCP-1) induced by angiotensin II (Ang II) was examined using vascular smooth muscle cells (VSMC) isolated from rat thoracic aorta. METHODS AND RESULTS:Ang II increased the expression o...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000198031.30095.d1
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Type 2 diabetes mellitus is associated with an increased risk of hypertension, and cardiovascular and renal disease, and it has been recommended that management of hypertension should be more aggressive in presence than in absence of diabetes mellitus, but the matter is controversial at present. OBJECTIVES:...
journal_title:Journal of hypertension
pub_type: 杂志文章,meta分析,评审
doi:10.1097/HJH.0000000000001276
更新日期:2017-05-01 00:00:00
abstract::A previously described Pst I restriction fragment length polymorphism in Dahl rats at the Na+, K(+)-adenosine 5'-triphosphatase (ATPase) alpha 1 isoform locus was tested for cosegregation with blood pressure in segregating populations. Inbred Dahl salt-sensitive (S) and inbred Dahl salt-resistant (R) rats were crossed...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199005000-00010
更新日期:1990-05-01 00:00:00
abstract:OBJECTIVE:Metabolic syndrome (MetS) is associated with insulin resistance and increases the cardiovascular risk. Oxidative stress constitutes a potential mechanism that links insulin resistance and cardiovascular disease. The aim of this study was to analyze the relationship of NADPH oxidase activation with insulin res...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32832b1e8f
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVE:Blood pressure (BP) increases both in winter and in the last trimester of pregnancy. Some interaction seems to exist between season and gestational age. The present study observed home BP values during pregnancy with adjustment for seasonal variation and gestational age. METHODS:We observed 10353 home BP mea...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0b013e32831364a7
更新日期:2008-12-01 00:00:00
abstract::We compared the overflow of endogenous norepinephrine (NE) upon electrical stimulation, the associated pressor response and rate of initial neuronal uptake of 3H-I-NE in the perfused mesenteric arteries of Dahl salt-sensitive (DS) and salt-resistant (DR) rats on two dietary NaCl regimens (0.4 and 8.0% for 2 weeks) fro...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198901000-00007
更新日期:1989-01-01 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:OBJECTIVE AND DESIGN:The aim of the study was to assess the role of angiotensin II (Ang II) in the maintenance of cardiovascular hypertrophy and the abnormal vascular amplifier properties in spontaneously hypertensive rats (SHR) with established hypertension. Losartan, a type 1 Ang II receptor antagonist, was administe...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199307000-00006
更新日期:1993-07-01 00:00:00
abstract::The present study was designed to investigate in rats the influence of converting enzyme inhibition with captopril on blood pressure, plasma urea, plasma renin concentration (PRC), plasma aldosterone and plasma vasopressin, and to define the interrelationships between PRC and these variables during equal degrees of ei...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198604000-00008
更新日期:1986-04-01 00:00:00
abstract:OBJECTIVE:The acute effects of estrogen on hemodynamic responses were studied with emphasis on the sympathoadrenal system and peripheral circulation. DESIGN:Eleven healthy postmenopausal women recruited from the population-based study BEDA were included in this randomized, double-blind, cross-over, placebo-controlled ...
journal_title:Journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004872-200302000-00031
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the mean levels of blood pressure and hypertension (> or = 140 mmHg systolic or > or = 90 mmHg diastolic pressure or on treatment for hypertension) in the adult English population, and to evaluate any changes in the efficacy of hypertension management between 1994 and 2003. DESIGN/METHODS:Cross-s...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/01.hjh.0000226210.95936.bc
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVE:We compared diurnal patterns of blood pressure in Wistar-Kyoto (WKY) rats, spontaneously hypertensive rats (SHR) and stroke-prone spontaneously hypertensive rats (SHRSP), and analyzed the relationship between the change in diurnal patterns of blood pressure and target-organ damage in SHRSP. MATERIALS AND MET...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199917020-00005
更新日期:1999-02-01 00:00:00
abstract:OBJECTIVE:To examine the regulation by angiotensin II and by steroids of the expression of the angiotensin II AT1a and AT1b receptor genes in rat hearts. METHODS:Endogenous levels of angiotensin II in the rats were increased either by unilateral 0.2-mm renal artery clips or by subcutaneous infusions of frusemide (12 m...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1995-07-01 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:OBJECTIVE:Reversibility of the systemic and renal alterations induced by N(omega)-nitro-L-arginine-methyl ester(L-NAME) was assessed by treatment with irbesartan and enalapril (30 and 10 mg/kg per 24 h, respectively) alone or in combination. DESIGN:L-NAME (20 mg/kg per 24 h) was given to rats for 6 weeks and treatment...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-200111000-00015
更新日期:2001-11-01 00:00:00
abstract::The effects of i.v. injection of intact digoxin antibody (0.3 mg/rat) and of its Fab fragment (40 mg/rat) on blood pressure, cardiac output and total peripheral resistance were measured in conscious spontaneously hypertensive and deoxycorticosterone hypertensive rats. In vitro findings showed that Fab fragment bound r...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-198710000-00006
更新日期:1987-10-01 00:00:00
abstract:OBJECTIVE:Coronary heart disease (CHD) risk factors have been consistently related to an increase in carotid intima-media thickness (IMT) in selected populations. However, few studies were population-based and furthermore little attention has been given to the influence of CHD risk factors on IMT in low-risk population...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199917060-00004
更新日期:1999-06-01 00:00:00
abstract:OBJECTIVE:We aimed to investigate associations of childhood pulse pressure (PP) and change in PP status with adult subclinical vascular damage. METHODS:Data were obtained from a population-based cohort of children aged 6-18 years started in 1987. The study constituted 1254 participants who were followed up in 2010-201...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/HJH.0000000000001748
更新日期:2018-08-01 00:00:00
abstract::The present study investigated the roles of insulin on central cardiovascular regulation. When rats were fed with a high-salt diet for 4 weeks, hypothalamic and pituitary contents of insulin-like immunoreactive substance (ILI) significantly decreased. The plasma concentration of ILI remained unaltered, however. Intrac...
journal_title:Journal of hypertension
pub_type: 杂志文章
doi:10.1097/00004872-199106000-00006
更新日期:1991-06-01 00:00:00