Search Results
Results 351 - 400 of 1102
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Zamir Z - - 2006
BACKGROUND: Invasive studies in middle-aged patients suggest an acute adverse haemodynamic effect of smoking. AIMS: To study acute changes in blood pressure (BP), cardiac output, peripheral resistance and aortic compliance following cigarette smoking in healthy young subjects. METHODS: Using a non-invasive photoplethysmographic technique we compared the effects of smoking one ...
Djoussé Luc - - 2006
Data on the association between dairy consumption and blood pressure have been inconsistent. We sought to examine the relation between dairy consumption and prevalent hypertension (HTN) among 4797 participants of the National Heart, Lung, and Blood Institute Family Heart Study. We used generalized estimating equations to estimate prevalence odds ratios ...
Bichler A - - 2006
Red Bull energy drink has become extraordinarily popular amongst college students for use as a study aid. We investigated the combined effects of Red Bull's two active ingredients, caffeine and taurine, on short term memory. Studies on the effects of these two neuromodulators on memory have yielded mixed results, and ...
Bär Karl-Jürgen - - 2006
Acute alcohol withdrawal is often associated with increased sympathetic activity, and a decreased baroreflex sensitivity (BRS) can be assumed. Parameters of heart rate variability (HRV), blood pressure variability (BPV), BRS as well as cardiac index (CI), left ventricular work index (LVWI) and total peripheral resistance (TPR) were investigated in 20 ...
Ruidavets Jean-Bernard - - 2006
PURPOSE: Previous studies have shown a potential inverse relationship between blood pressure and daily calcium intake. The aim of the study was to assess the independent contribution of dairy product and calcium intake to blood pressure variations at a population level. METHODS: A sample of 912 men aged 45-64 years ...
Park Hyun - - 2006
Hydrostatic pressure causes a monophasic decrease in the (13)C primary isotope effect expressed on the oxidation of benzyl alcohol by yeast alcohol dehydrogenase. The primary isotope effect was measured by the competitive method, using whole-molecule mass spectrometry. The effect is, therefore, an expression of isotopic discrimination on the kinetic parameter ...
Balldin J - - 2006
Data has accumulated indicating an inverse relation between central serotonergic (5-HT) neurotransmission and blood pressure in hypertensive rats and in healthy individuals. The present study aimed to elucidate whether an inverse relation exists between systolic (SBP) and diastolic (DBP) blood pressure levels and central 5-HT neurotransmission also in a group ...
Mitchell Sally E - - 2006
PURPOSE: Ethanol has been used for embolization of vascular malformations. Cardiovascular collapse, although rare, has been reported, occurring immediately to a few hours after ethanol embolization. The pathophysiology has been theoretically attributed to direct toxicity to the cardiac conduction system or pulmonary artery (PA) vasospasm leading to cardiovascular collapse. Because ...
Gembala Mathew I - - 2006
BACKGROUND: Echocardiographic evidence of diastolic dysfunction has been demonstrated during acute cigarette smoking in patients with coronary artery disease. Similar studies in healthy patients have shown conflicting results. Furthermore, it is unclear whether nicotine or some other cigarette-related substance is responsible for these observations. HYPOTHESIS: The purpose of the study ...
Kaukiainen Ari - - 2006
OBJECTIVES: Industrial solvent exposure has been suggested to elevate blood pressure and to be associated with fatty liver disease. The mechanism of action is poorly known, as is the contribution of individual solvents. METHODS: Twenty-six workers with long-term solvent exposure and 19 unexposed volunteers were recruited. A detailed exposure assessment ...
Mularski Richard A - - 2006
We describe a case of massive oral niacin overdose that resulted in severe persistent hypotension without the manifestation of cutaneous flushing. This case is the highest overdose of niacin reported in the literature to date and the first time severe persistent hypotension has been attributed to niacin. A 56-year-old male ...
Schneider Rainer - - 2006
The objective of this study is to determine the impact of expectation associated with placebo and caffeine ingestion. We used a three-armed, randomized, double-blind design. Two three-armed experiments varying instruction (true, false, control) investigated the role of expectations of changes in arousal (blood pressure, heart rate), subjective well-being, and reaction ...
Ruixing Yin - - 2006
BACKGROUND/AIMS: Hei Yi (meaning black worship and black dress) Zhuang is the most conservative group among the 43 ethnic subgroups of Zhuang in China due to its unique culture and customs. The prevalence of hypertension in this population has not been well defined. Therefore, the present study was undertaken to ...
Alvarez-Nemegyei José - - 2005
OBJECTIVE: To assess the prevalence and risk factors for urolithiasis in primary gout. METHODS: One hundred forty patients with primary gout were studied. Urolithiasis was defined as a history of urolithiasis, or nephrolithiasis detected via ultrasonography in patients with no previous record of urolithiasis. Patient age, duration of gout, presence ...
Bulpitt Christopher J - - 2005
Lowering alcohol intake reduces blood pressure and hence cardiovascular risk. However, abstainers have an increase in cardiovascular risk and the advice to reduce intake to low levels may not be sound. This review examines the effects of lowering alcohol consumption in terms of blood pressure and coronary heart disease (CHD). ...
Koppes Lando L J - - 2005
OBJECTIVE: Serum lipids, blood pressure and body mass may mediate the U-shaped relationship of alcohol consumption with type 2 diabetes mellitus and coronary heart disease. This study examines the cross-sectional and long-term longitudinal relationships of (changes in) alcohol consumption with (changes in) serum lipids, blood pressure and body mass indices. ...
Kidman Gene - - 2005
A 3:1 combination of sucrose and glycine provides significantly greater protection against pressure-induced inactivation of yeast alcohol dehydrogenase than either solute alone. Trehalose, alone, gives much greater protection than sucrose alone, but not so in combination with glycine. These are striking new findings that cannot be accounted for by current ...
Barry Robert J - - 2005
OBJECTIVE: This study examined the use of caffeine to manipulate arousal level without the confounds associated with task-related activation. From previous work in our laboratory, an increase in skin conductance level (SCL) and EEG alpha frequency, together with a global decrease in alpha power, were used as markers of arousal ...
Stranges Saverio - - 2005
Gamma-glutamyltransferase (GGT) has been associated with hypertension (HTN); however, the nature of this association remains unclear. GGT is a marker of alcohol consumption, but it is also related to the infiltration of fat in the liver (fatty liver). The association between GGT and HTN was examined in a 6-year longitudinal ...
Mar Therese F - - 2005
BACKGROUND: Past studies of air pollution effects among sensitive subgroups have produced inconsistent results. Our objective was to determine relationships between various measures of air pollution and cardiorespiratory effects in older subjects. METHODS: We conducted a study that included repeated measurements of pulmonary function (arterial oxygen saturation) and cardiac function ...
Bau Paulo Fernando Dotto - - 2005
Previous investigations have shown a biphasic effect of alcohol on blood pressure (BP). However, there are no studies on possible simultaneous influences in endothelial function. This study aims to evaluate the early and late effects of alcohol ingestion on vascular and endothelial function parameters in healthy young men. The diameter ...
Noda M - - 2005
AIM: This study aimed to examine the sway characteristics of center of foot pressure (CFP) movement during a static upright posture under the influence of alcohol by using quantitative and fractal analysis. METHODS: Eleven healthy young people participated. They drank in a range of 0.54-1.83 ml/kg of alcohol, standardized by ...
Funatsu Kazuo - - 2005
Many cross-sectional epidemiological studies have revealed that alcohol consumption is closely related to an increase in blood pressure, which is known to be associated with an elevated serum gamma-glutamyltransferase (GGT) level, rather than to the volume of alcohol consumed. Since recent studies showed that coffee intake is inversely related to ...
Miller Peter M - - 2005
Substantial evidence demonstrates that: 1) heavy alcohol consumption (three or more standard drinks per day) is associated with and predictive of hypertension; 2) reduction in alcohol consumption is associated with a significant dose-dependent lowering of mean systolic and diastolic blood pressure; and 3) physician advice can reduce heavy drinking in ...
Obata Akiko - - 2005
This study assessed hemodynamic changes associated with alcohol intake in people who have different sensitivities to alcohol due to an inactive form of mitochondrial aldehyde dehydrogenase (ALDH). People with ALDH2*1/*2 are more sensitive to alcohol than people with ALDH2*1/*1. Six ALDH2*1/*1 subjects and four ALDH2*1/*2 subjects participated in this study. ...
Satarug Soisungwan - - 2005
In recognition of a central role of the kidney in long-term blood pressure control, we undertook an in-depth analysis of the relationship between blood pressure and kidney damage caused by environmental exposure to the common pollutants cadmium and lead. The subjects were 200 healthy Thais, 16 and 60 years of ...
Zilkens Renate R - - 2005
A positive relationship between alcohol consumption and blood pressure (BP) is well-established but the relative effect of specific alcoholic beverages is controversial. This study aimed to determine whether red wine may improve vascular function and have less of an impact on blood pressure because of its high content of antioxidant ...
Wildman Rachel P - - 2005
OBJECTIVE: To examine the associations between alcohol intake and isolated systolic hypertension (ISH), systolic-diastolic hypertension (SDH), and isolated diastolic hypertension (IDH). DESIGN: Cross-sectional study of Chinese adults. METHODS: We analyzed data from 5317 Chinese males who were not on antihypertensive medications from a nationally representative sample of Chinese adults aged ...
Owen Christopher G - - 2005
BACKGROUND: Although low birthweight has been related to higher mean blood pressure in individuals, there have been very few studies on the contribution of the 'fetal origins hypothesis' to international variations in mean blood pressure. METHODS: Standardized data on mean blood pressure levels in adults aged 20-29 years (available from ...
Stewart Sherry H - - 2005
The authors examined heart rate responses to video lottery terminal (VLT) play and alcohol intake. Forty-four VLT players were randomized to an alcohol (mean blood alcohol concentration=0.06%) or a control beverage condition. Heart rate was recorded at pre- and postdrinking baseline and during VLT play. Alcohol participants displayed elevated heart ...
Atkinson Greg - - 2005
We examined the effects of time of day on a cycling time trial with and without a prolonged warm-up, among cyclists who tended towards being high in "morningness". Eight male cyclists (mean +/- s: age = 24.9 +/- 3.5 years, peak power output = 319 +/- 34 W, chronotype = ...
Karatzis Emmanouil - - 2005
BACKGROUND: Data concerning blood pressure changes, acutely induced by caffeine consumption, are conflicting. Furthermore, limited data exist regarding central hemodynamic response to caffeine ingestion by healthy young subjects. We investigated the acute effect of coffee (80 mg of caffeine) and decaffeinated coffee on peripheral and central hemodynamics, as well as ...
McFadden Christopher B - - 2005
Numerous epidemiologic investigations have found an association between moderate intake of alcohol and increased blood pressure (BP). However, in controlled clinical studies that directly tested the effects of alcohol intake on BP, findings are inconsistent, perhaps because of differences in duration of alcohol use and the timing of BP measurements. ...
Lorsheyd A - - 2005
BACKGROUND: Acute, excessive alcohol intake has been associated with an increased cardiovascular mortality in otherwise healthy individuals. It predisposes to accelerated atherosclerosis resulting in acute coronary events but also arrhythmias have been described, such as atrial fibrillation and life-threatening re-entrant ventricular arrhythmias. QTc prolongation is associated with an increased risk ...
Nephew Benjamin C - - 2005
Previous studies in European starlings have concluded that conspecific crowding can be a significant stressor that is capable of simultaneously altering behavior, heart rate, and corticosterone (CORT) concentrations. It was hypothesized that the peptide hormone arginine vasotocin (AVT) has a role in the regulation of these three types of responses ...
Hodgson Jonathan M - - 2005
BACKGROUND: Effects of regular exposure to polyphenolic compounds found in tea, leading to improved endothelial function and blood pressure, may reduce cardiovascular disease risk. Controlled trials in humans have found that ingestion of tea can improve endothelial function, but also cause a rapid onset acute increase in blood pressure. OBJECTIVE: ...
Kim Jin Won - - 2005
OBJECTIVES: Pulse wave velocity (PWV) is an indicator of arterial stiffness, especially in the aorta, and a marker for vascular damage. Smoking is reported to increase arterial stiffness. We examined the acute and chronic effects of smoking on arterial stiffness by measuring brachial--ankle PWV (baPWV) using an oscillometric method (VP ...
Thomas Mark - - 2005
Rates of end-stage renal disease among Australian Aboriginal people have been increasing over the past 2 decades, particularly in the northern and more remote areas of Australia, and especially in disadvantaged communities. Proteinuria predicts the rate of loss of kidney function; it is common in young adults and virtually universal ...
Wakabayashi Ichiro - - 2005
There is a genetic difference in sensitivity to alcohol in Orientals, which is known to be mainly due to polymorphisms of alcohol-metabolizing enzymes such as aldehyde dehydrogenase. Habitual alcohol drinking is a risk factor for hypertension. However, it has not been determined whether individual sensitivity to alcohol influences the relationship ...
Papaioannou Theodoros G - - 2005
Caffeine is considered to be the most widely consumed pharmacologic substance in the world. Several recent sources of evidence suggest that caffeine, besides its well-established pressor effects, provokes further alterations in arterial stiffness, wave reflections, and especially aortic blood pressures, which are often overlooked. The increasing evidence regarding the prognostic ...
Park Hyun - - 2005
Hydrostatic pressure causes biphasic effects on the oxidation of alcohols by yeast alcohol dehydrogenase as expressed on the kinetic parameter V/K which measures substrate capture. Moderate pressure increases capture by activating hydride transfer, whose transition-state must therefore have a smaller volume than the free alcohol plus the capturing form of ...
Gerak Lisa R - - 2004
The current studies characterized the rate-decreasing and cardiovascular responses produced by 1,4-butanediol administered alone and in combination with ethanol to test the hypothesis that these effects resulted from the degradation of 1,4-butanediol to gamma-hydroxybutyrate. One group of rats responded under a fixed-ratio 20 schedule of food presentation; ethanol and 1,4-butanediol ...
Granfors Marika T - - 2004
BACKGROUND AND OBJECTIVE: Tizanidine, a centrally acting skeletal muscle relaxant, is metabolized mainly by cytochrome P450 (CYP) 1A2 and has a low oral bioavailability. The fluoroquinolone antibiotic ciprofloxacin is only a moderately potent inhibitor of CYP1A2. Our objective was to study the extent and mechanism of a possible interaction of ...
Ikeda Toshio - - 2004
To assess the relationship between home blood pressure and left ventricular mass, we evaluated cardiac echocardiography in 297 hypertensive subjects (188 men and 109 women; mean age, 62.8+/-10.3 years) who were treated with amlodipine monotherapy over 1 year (mean dose, 5.5+/-2.3 mg/day). The morning hypertension group (n=57; 19.2%), who had ...
Barutcu Irfan - - 2004
BACKGROUND: Cigarette smoking has been shown to temporarily alter cerebral flow velocity and vasomotor reactivity, so the aim of this study was to assess the acute effects of smoking a single cigarette on the common carotid artery (CCA) hemodynamics in healthy nonsmokers. METHOD AND RESULTS: Using a 7.0 MHz linear ...
Zierold Kristina M - - 2004
Inorganic arsenic is naturally occurring in groundwaters throughout the United States. This study investigated arsenic exposure and self-report of 9 chronic diseases. We received private well-water samples and questionnaires from 1185 people who reported drinking their water for 20 or more years. Respondents with arsenic levels of 2 microg/L or ...
James Jack E - - 2004
This study examined the separate and interactive effects of caffeine, sleep restriction, and task-induced laboratory stress in 96 healthy male and female volunteers. Participants alternated weekly between ingesting placebo and caffeine (1.75 mg/kg) three times daily for 4 consecutive weeks, while being either rested or sleep restricted. Finapres measurements of ...
Heuberger Eva - - 2004
Essential lavender oil has a long tradition as a mild sedative in herbal medicine. Relaxing effects after inhalation have also been demonstrated for one of its main constituents, (-)-linalool. The aim of the present investigation was to determine the effects of this monoterpenoid alcohol on human physiological parameters (blood oxygen ...
Tong Wenjing - - 2004
BACKGROUND: Only limited studies have been done on the effects of long-term cocaine use on the human heart, and the results remain controversial. In this study, we examined and compared the diastolic function of non-cocaine users and chronic cocaine users to reveal the impact of long-term cocaine use on the ...
Leslie Stephen J - - 2004
OBJECTIVE: Our objective was to investigate the hemodynamic interaction between sildenafil and red wine. Sildenafil citrate (Viagra), a phosphodiesterase type 5 inhibitor, is an effective treatment for male erectile dysfunction that potentiates nitric oxide-mediated vasodilation. Alcohol is a commonly used recreational substance with complex vascular effects, which may, in part, ...
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