Abstract:
BACKGROUND:Sustained hypotension after an acute dynamic exercise bout is due primarily to peripheral vasodilation. We tested the hypothesis that adenosine-mediated vasodilation contributes to hypotension after exercise, by determining the effect of blocking its actions with caffeine. METHODS:Fourteen healthy middle-aged subjects (mean age = 51 +/- 3 years), cycled to peak effort on 2 study days, after a randomized double-blind intravenous infusion of caffeine (4 mg/kg) selective for adenosine receptor blockade, or vehicle. Both studies were performed after 72 h of caffeine abstinence. RESULTS:Infusion achieved 52.0 +/- 6.1 mumol/L caffeine in plasma. Significant reductions in mean and diastolic blood pressure (BP) were elicited by prior exercise on the vehicle day (from 93 +/- 2 to 85 +/- 2 mm Hg v from 79 +/- 2 to 73 +/- 3 mm Hg, respectively; both P < .05), but not after caffeine infusion. Systolic and mean BP, 10 min after exercise, were higher on the caffeine than on the vehicle day (by 9 +/- 3 and 6 +/- 2 mm Hg, respectively; P < .05), as was heart rate (HR) (100 +/- 5 v 93 +/- 4 beats/min; P < .05). CONCLUSIONS:These data suggest that endogenous adenosine contributes to early hypotension after exercise in healthy middle-aged subjects and underscore the importance of caffeine abstinence if BP or HR immediately after exercise is used to infer cardiovascular risk.
journal_name
Am J Hypertensjournal_title
American journal of hypertensionauthors
Notarius CF,Morris BL,Floras JSdoi
10.1016/j.amjhyper.2005.07.022subject
Has Abstractpub_date
2006-02-01 00:00:00pages
184-8issue
2eissn
0895-7061issn
1941-7225pii
S0895-7061(05)01146-5journal_volume
19pub_type
杂志文章,随机对照试验abstract::To evaluate potential physiological actions of atrial natriuretic peptide (ANP) in humans, normal male volunteers were studied in the supine and head-up tilt positions both in the absence and presence of an ANP infusion at a rate which increased plasma ANP levels to ranges observed during physiological stimuli such as...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/4.3.219
更新日期:1991-03-01 00:00:00
abstract::The aim of this study was to compare the efficacy (lowering diastolic blood pressure to 90 mm Hg or less) of urapidil, a postsynaptic alpha-blocker with central action with that of captopril in a randomized, double-blind, multicenter study. Two hundred ninety-five essential hypertensives (WHO I/II) (140 male, 155 fema...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/ajh/1.3.233s
更新日期:1988-07-01 00:00:00
abstract:BACKGROUND:Activation of RhoA/Rho kinase (ROK) pathway by angiotensin II (Ang II) is involved in the pathophysiology of hypertension and remodeling. In Bartter's and Gitelman's syndrome (BS/GS), the short-term and long-term signaling of Ang II are blunted. The BS/GS have also reduced expression and response on Ang II c...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/j.amjhyper.2005.03.747
更新日期:2005-09-01 00:00:00
abstract::Twenty-four-hour ambulatory blood pressure measurements (ABPM) are likely to eliminate the stress of visits and observer bias in office blood pressure (BP) recordings, allow consideration of the circadian variability in BP, and correlate well with target organ damage. To define the prevalence of "white coat" hypertens...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/5.9.616
更新日期:1992-09-01 00:00:00
abstract::Resistant hypertension (RH) is a multifactorial disease associated with several target organ damage, such as microalbuminuria, left ventricular hypertrophy, and arterial stiffness. These subjects have high cardiovascular complications, especially when associated with diabetes condition. Sodium glucose cotransporter 2 ...
journal_title:American journal of hypertension
pub_type: 杂志文章,评审
doi:10.1093/ajh/hpx204
更新日期:2018-02-09 00:00:00
abstract:BACKGROUND:There is evidence from genome wide association study that single-nucleotide polymorphisms (SNPs) in the 5' end of the uromodulin gene (UMOD) affect uromodulin excretion and blood pressure (BP). Uromodulin is almost exclusively expressed in the thick ascending limb of the loop of Henle (TAL) and its effect on...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpaa166
更新日期:2020-10-21 00:00:00
abstract::The peak incidence of cardiovascular complications in the morning points to a possible role of the abrupt increase in blood pressure on arising. However, there is as yet no firm evidence linking the extent of the elevation in blood pressure on arising and the risk of cardiovascular complications. We sought a correlati...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(96)00048-9
更新日期:1997-05-01 00:00:00
abstract:BACKGROUND:Little is known about the influence of blood pressure (BP) on cardiovascular disease (CVD) outcomes among Asian populations. METHODS:We examined population attributable fractions (PAFs) and hazard ratios (HRs) associated with BP in relation to stroke and coronary heart disease (CHD) incident and mortality w...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2008.356
更新日期:2009-03-01 00:00:00
abstract:BACKGROUND:The present study examined the inhibitory action of temporary treatment with an angiotensin type 1 (AT(1)) receptor blocker (ARB) on vascular remodeling using hypertensive mice with overexpression of the human renin (hRN) and angiotensinogen (hANG) genes. METHODS:hRN/hANG transgenic mice (hRN/hANG-Tg) were ...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2011.6
更新日期:2011-05-01 00:00:00
abstract::Previous studies from our laboratories have demonstrated a selective increase in stores of atrial natriuretic peptide (ANP) in the anterior hypothalamus of NaCl-sensitive spontaneously hypertensive rats (SHR-S) compared to NaCl-resistant Wistar-Kyoto (WKY) controls and have suggested that anterior hypothalamic ANP con...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/4.5.449
更新日期:1991-05-01 00:00:00
abstract::We have previously reported that myocardial microsomal Na+,K(+)-ATPase activity, arterial wall ouabain-sensitive 86Rb uptake, and arterial smooth muscle cell membrane potentials are decreased and plasma Na(+)-K+ pump inhibitory activity is increased in rats during the fifth week of one-kidney, one-clip hypertension. W...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:
更新日期:1991-10-01 00:00:00
abstract:BACKGROUND:Higher fibroblast growth factor-23 (FGF23) concentrations have been found to be associated with incident heart failure (HF). Experimental data suggest FGF23 directly stimulates myocardial hypertrophy. FGF23 may also enhance renin-angiotensin-aldosterone system activity. Whether FGF23 is associated with incre...
journal_title:American journal of hypertension
pub_type: 杂志文章,多中心研究
doi:10.1093/ajh/hpy142
更新日期:2019-01-01 00:00:00
abstract::In this study, 395 healthy children had blood pressure and heart rate measured both at rest and during a stressful video game. Identical measurement procedures were used for three annual examinations. Consistently, black children demonstrated significantly greater pressor responses than white children. In view of the ...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章
doi:10.1093/ajh/4.7.630
更新日期:1991-07-01 00:00:00
abstract:BACKGROUND:Seventeen percent of youth in the United States are obese. Obesity has been linked to higher prevalence of hypertension. Past studies were limited by their size and conflicting results. The aim of this study was to analyze trends in adolescents' obesity between 1998 and 2011 and to evaluate the relationship ...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpv007
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:Hypertension treatment is important in managing chronic renal insufficiency (CRI). Little is known, however, about the blood pressure (BP) control achieved or the pattern of antihypertensive drug prescription among CRI patients. METHODS:Using computerized medical records, we studied 3,089 adult hypertensive...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(01)02202-6
更新日期:2001-12-01 00:00:00
abstract::In recent years, several international bodies of experts have established extensive guidelines for the prevention and treatment of coronary heart disease (CHD) that clearly define the importance of altering patients' lifestyles and administering therapeutic agents that positively affect disease progression. However, s...
journal_title:American journal of hypertension
pub_type: 杂志文章,评审
doi:10.1016/s0895-7061(99)00160-0
更新日期:1999-10-01 00:00:00
abstract:BACKGROUND:In middle-aged and elderly populations, circulating natriuretic peptide concentrations are negatively associated with several components of the metabolic syndrome. Whether these negative associations are also present in healthy adolescents and young adults from the general population are unknown. METHODS:In...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpx026
更新日期:2017-06-01 00:00:00
abstract::Hypertension is a common condition that is often seen in patients with diabetes. Both diseases increase the risk of morbidity and mortality from CV events and kidney disease progression. Factors that influence blood pressure (BP) control in diabetes include the persons' genetic background for hypertension and kidney d...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpaa067
更新日期:2020-10-21 00:00:00
abstract::Plasma renin activity (PRA) declines with age in normal individuals, but the effect of age on plasma angiotensin II (ANG II) is less clear. A decline in plasma ANG II with age could result in altered platelet ANG II receptor density since plasma hormone levels influence their target organ receptors. To investigate thi...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/5.10.687
更新日期:1992-10-01 00:00:00
abstract:BACKGROUND:The question of whether reduced sodium intake is effective as a health prophylaxis initiative is unsolved. The purpose was to estimate the effects of low-sodium vs. high-sodium intake on blood pressure (BP), renin, aldosterone, catecholamines, and lipids. METHODS:Studies randomizing persons to low-sodium an...
journal_title:American journal of hypertension
pub_type: 杂志文章,meta分析,评审
doi:10.1038/ajh.2011.210
更新日期:2012-01-01 00:00:00
abstract::Intranasal administration of some peptides has been shown to directly influence central nervous functions, thus pointing to a nose-brain pathway for these substances in humans. The present study investigated whether intranasal administration of angiotensin II (ANG II) affects central nervous functions of cardiovascula...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章
doi:10.1016/s0895-7061(98)00095-8
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:The association between hypertension (HTN) and inflammatory biomarkers (interleukin-6 [IL-6] and high-sensitivity C-reactive protein [hsCRP]) in HIV-positive persons with CD4+ count >500 cells/mm3 is unknown. METHODS:We studied HTN in participants of the Strategic Timing of AntiRetroviral Treatment (START) ...
journal_title:American journal of hypertension
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/ajh/hpz132
更新日期:2020-01-01 00:00:00
abstract::Leptin may be a link in the relationship of obesity with hypertension. We evaluated associations of leptin with blood pressure (BP) in 54 normotensive and 114 hypertensive African American individuals. Plasma leptin was higher (P <.03) in hypertensive women than in normotensive women, although body mass index did not ...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(02)03089-3
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:The aim of our study was to investigate the control of hypertension (HT) in treated children using ambulatory blood pressure (BP) monitoring (ABPM). METHODS:We retrospectively reviewed all ABPM studies in our center. Controlled HT was defined as systolic and diastolic BP index (patients' BP divided by the 9...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1038/ajh.2011.218
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Angiotensin-converting enzyme (ACE) inhibitors have been widely used in the treatment of hypertension, but the comparative effectiveness in reducing mortality among different drugs is seldom reported. METHODS:We identified hypertensive patients who started captopril, enalapril, lisinopril, fosinopril, perin...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/hpu237
更新日期:2015-06-01 00:00:00
abstract::The aim of this study was to examine the effects of long-term continuous intracerebroventricular (icv) infusion of metformin on blood pressure (BP) in spontaneously hypertensive rats (SHR). To accelerate the development of hypertension, SHR were fed a 8% NaCl diet during the 3-week study period. Metformin was given in...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1016/s0895-7061(01)02220-8
更新日期:2001-11-01 00:00:00
abstract::Epidemiological and experimental studies have suggested that dietary calcium deficiency may lead to the development of hypertension. This article reviews findings in human trials on calcium intervention with special reference to the responses of blood pressure and biochemical variables. Calcium supplementation consist...
journal_title:American journal of hypertension
pub_type: 杂志文章,评审
doi:10.1093/ajh/3.8.147
更新日期:1990-08-01 00:00:00
abstract::The effects of increased dietary calcium intake on blood pressure and arterial function were investigated in one-kidney deoxycorticosterone-salt hypertensive Wistar rats. The calcium content of the control diet was 1.1%, and that of the high calcium diet, 2.5%. During the 10-week study calcium supplementation markedly...
journal_title:American journal of hypertension
pub_type: 杂志文章
doi:10.1093/ajh/7.6.520
更新日期:1994-06-01 00:00:00
abstract::Understanding the causes and treatment of chronic hypotension is of benefit to affected patients and may also shed light on the physiology and genetics of mechanisms of blood pressure control. Symptomatic hypotension (almost always with a blood pressure fall greater than or equal to 20/10 mm Hg) may reflect unrecogniz...
journal_title:American journal of hypertension
pub_type: 杂志文章,评审
doi:
更新日期:1992-06-01 00:00:00
abstract::Barriers to high blood pressure (HBP) care and control have been reported in the literature for > 30 years. Few reports on barriers, however, have focused on the young black man with HBP, the age/sex/race group with the highest rates of early severe and complicated HBP and the lowest rates of awareness, treatment, and...
journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0895-7061(99)00121-1
更新日期:1999-10-01 00:00:00