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Results 251 - 300 of 1559
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Espeland Mark A - - 2002
PURPOSE: To characterize relationships between sodium and potassium intakes and blood pressure control. METHODS: We analyzed repeated 24-hour diet recalls and 24-hour urine assays from 873 elderly participants with established hypertension in a 3-year clinical trial of lifestyle interventions. Pooled estimates of electrolyte intakes were developed using hierarchical measurement error ...
Hooper Lee - - 2002
To assess the long term effects of advice to restrict dietary sodium in adults with and without hypertension. Systematic review and meta-analysis of randomised controlled trials. Cochrane library, Medline, Embase, and bibliographies. Unconfounded randomised trials that aimed to reduce sodium intake in healthy adults over at least 6 months. Inclusion ...
Mori Yuki - - 2002
The study investigated how the pressure exerted on the skin by clothing worn while working in the daytime affected the urinary excretion of adrenaline, noradrenaline and cortisol, heart rate, and also melatonin secretion at night. Nine young women (experiment I) and seven young women (experiment II) participated. Participants wore either ...
Nishimura Masataka - - 2002
Recently, we found that the circadian rhythms of natriuresis as well as of glomerular filtration rate were disturbed similar to the blood pressure in non-dipper type of essential hypertension during intake of a high-sodium diet. In this study, we examined circadian rhythms of the urinary albumin excretion rate (AER), which ...
Mangrum Amy J - - 2002
The present study was performed to investigate the role of type 1A ANG II (AT(1A)) receptors in regulating sodium balance and blood pressure maintenance during chronic dietary sodium variations in AT(1A) receptor-deficient (-/-) mice. Groups of AT(1A) (-/-) and wild-type mice were placed on a low (LS)-, normal (NS)-, or ...
Johns Edward J - - 2002
The maintenance of cardiovascular homeostasis represents a balance of activities between of the heart, vascular system and the kidneys in the control of extracellular fluid volume and ultimately blood pressure. Any disturbance in the function of these organs can lead to hypertension and heart failure. Interaction between the cardiovascular and ...
Piper S N - - 2002
Controlled hypotension may alter organ blood flow and tissue oxygenation. The aim of the study was to investigate whether induced hypotension using sodium nitroprusside alters pancreatic function assessed by pancreatitis-associated protein concentrations in the blood. Thirty patients undergoing elective radical prostatectomy were allocated randomly into two groups: (a) hypotension group: ...
Cohen Hillel W - - 2002
The Dietary Approaches to Stop Hypertension (DASH) trial adds to the large body of evidence indicating a direct association of dietary sodium with blood pressure, and showing that rigorous reduction of dietary sodium can reduce blood pressure over a 30-day period by statistically significant amounts. DASH, however, neither addressed nor ...
Schröder H - - 2002
BACKGROUND: Hypertension is strongly associated with cardiovascular and renal disease. However, despite the efforts made to control hypertension via drug treatment, prevalence of controlled hypertension could be considered low. AIM OF THE STUDY: We performed the present study to investigate dietary habits among groups with different blood pressure status (normotensive, ...
Buemi Michele - - 2002
Hypertension is a widespread phenomenon whose ultimate cause is still unknown. Many factors contribute to this disease, and partially for this reason, hypertension responds to different treatments in different individuals. It is difficult to generalize about therapies for general populations. In particular, the role of electrolytes in hypertension varies widely ...
Hinghofer-Szalkay H - - 2002
There is evidence on body fluid volume effects of head-down tilt bed rest and altered oral sodium supply, but the combined impact of both has not been investigated in detail. We therefore studied circulatory adaptation to 8 days -6 degrees head down bed rest (HDBR) with different levels (-140 to ...
John J H - - 2002
BACKGROUND: High dietary intakes of fruit and vegetables are associated with reduced risks of cancer and cardiovascular disease. Short-term intensive dietary interventions in selected populations increase fruit and vegetable intake, raise plasma antioxidant concentrations, and lower blood pressure, but long-term effects of interventions in the general population are not certain. ...
Bergel Eduardo - - 2002
OBJECTIVE: To assess in an animal model the effect of maternal dietary calcium intake during pregnancy on the blood pressure of offspring. DESIGN: Randomised controlled trial. SAMPLE: Ninety-eight 20-week-old female Wistar-Kyoto rats, giving birth to a total of 119 pups that were included in the follow up study. METHODS: Rats ...
Saad Wilson Abrão - - 2002
Our studies have focused on the effect of injection of L-NAME and sodium nitroprussiate (SNP) on the salivary secretion, arterial blood pressure, sodium excretion and urinary volume induced by pilocarpine which was injected into the medial septal area (MSA). Rats were anesthetized with urethane (1.25 g/kg b. wt.) and a ...
Block Gladys - - 2002
A large controlled study supported by the NIH, the DASH study (Dietary Approaches to Stop Hypertension), demonstrated that a diet rich in fruits and vegetables can reduce blood pressure in persons with moderate elevation in blood pressure (BP). Fruits and vegetables are important sources of antioxidants such as vitamin C ...
du Cailar Guilhem - - 2002
In addition to its widely contested influence on arterial pressure, dietary sodium may exert some nonpressure-related effects on left ventricular mass in humans. In the present study, we hypothesized that sodium intake (estimated by two consecutive measurements of 24-h urinary sodium excretion) may amplify the effect of arterial pressure on ...
Loyke Hubert F - - 2002
This review enumerates and discusses the elements involved in the control of human blood pressure via a historical evolutionary form. The older and most recent element literature presentations were researched using MEDLINE and a manual review of documents cited. Independent data extraction and cross-referencing was performed. Of the 28 known ...
Cirillo M - - 2002
A previous study reported that urinary markers of protein intake are inversely related to blood pressure via unknown mechanisms. In man and rats, protein intake affects renal function and increases renal sodium excretion. The present study investigates the relation between markers of protein intake and blood pressure and the possible ...
Ruha Anne-Michelle - - 2002
OBJECTIVE: To determine whether intravenous (IV) hypertonic sodium bicarbonate is effective in the reversal of QRS widening associated with severe Taxus intoxication. METHODS: Seventeen anesthetized and instrumented swine were poisoned with an IV extract of Taxus media until doubling of the QRS interval on electrocardiography was achieved. After poisoning (time ...
Morikawa Y - - 2002
To investigate the association of calcium intake independently of other nutrients already known as predictors of hypertension, a cross-sectional study was carried out on the same population in Japan as used for the INTERSALT study. Dietary calcium intake was estimated from a 1-day 24-h recall. Sodium and potassium intakes were ...
Qureshi Adnan I - - 2002
OBJECTIVE: To study regional intraparenchymal pressures within the cranial cavity during and after formation of intracerebral hemorrhage. We also assessed the effect of hypertonic saline on intraparenchymal pressure in different brain regions and on regional brain distribution of sodium within the brain. DESIGN: Prospective, controlled, laboratory trial. SETTINGS: Animal research ...
Pomeranz Avishalom - - 2002
BACKGROUND: In a previous study, we found that increased sodium concentrations in the drinking water led to an increase in mean arterial pressure (MAP) and systolic blood pressure (SBP) in fourth- and fifth-grade school children. Milk powder formulae have a low content of sodium, almost identical to that of breast ...
Ding Feng - - 2002
Online hemodiafiltration (online HDF) and acetate-free biofiltration (AFB) are 2 innovative renal replacement therapies. Convincing evidence has shown that both techniques are superior to conventional hemodialysis in many aspects. The aim of the present investigation was to compare online HDF and AFB in 12 stable maintenance hemodialysis patients in a ...
I. G. Sat
In this research, the effects of cooking alone, soaking-cooking combination on the oligosaccharide contents of a registered dry bean variety, Seker grown in Turkey was studied. Saccharose, raffinose and stachyose contents of the raw material were 3.91, 1.86 and 3.84%, respectively. The highest removing, to the extent of decrease up ...
Milan Alberto - - 2002
Hypertension is a risk factor for cardiovascular and renal organ damage. Environmental conditions affect the development of high blood pressure (BP), although genetic influences are also important. Current international guidelines recommend reducing dietary sodium to no more than 100 mmol (about 2.4 g sodium or approximately 6 g salt) per ...
Watanabe Y - - 2002
We investigated the relationship between sodium sensitivity and diurnal variation of blood pressure in outpatients with hypertension. Twenty hypertensives were maintained on both a regular sodium diet for a period of 2 weeks and a low salt (7 g/day) diet for a period of one or two weeks. Ambulatory blood ...
Adeyemo Adebowale A - - 2002
High sodium intake is associated with high levels of blood pressure, both among and within populations. However, there have been few intervention studies from Africa reporting blood pressure changes with dietary reduction of sodium. In this study, we tested the feasibility of achieving a reduction in dietary sodium intake in ...
Straver B - - 2002
BACKGROUND: Profiled hemodialysis (HD) has been claimed to ameliorate intradialytic complications such as hypotension. Frequently, these profiles are based on providing the patient with an accumulating sodium load. This increases the risk of interdialytic complications, such as hypertension and increased weight gain. The present study investigated the effect of profiled ...
Vollmer W M - - 2001
BACKGROUND: Initial findings from the Dietary Approaches to Stop Hypertension (DASH)-Sodium Trial demonstrated that reduction of sodium intake in two different diets decreased blood pressure in participants with and without hypertension. OBJECTIVE: To determine effects on blood pressure of reduced sodium intake and the DASH diet in additional subgroups. DESIGN: ...
Nagyova B - - 2001
Active sodium transport across alveolar epithelium is known to contribute to the resolution of pulmonary oedema. We have attempted to assess whether sodium transport is essential to prevent liquid accumulation in healthy pulmonary alveoli exposed to mild hypoxia, and whether its contribution to liquid absorption differs between mild and moderate ...
Beilin L J - - 2001
1. Recent data from randomized controlled dietary trials have shown blood pressure-lowering effects of foodstuffs and dietary patterns to be of practical importance for both individual and population blood pressure control. 2. The salient studies include Dietary Approaches to Stop Hypertension (DASH) trials, on complex dietary patterns and of additive ...
Strazzullo P - - 2001
OBJECTIVES: Central adiposity, insulin resistance and hypertension are clearly interrelated but the mechanisms underlying this association have not been thoroughly elucidated. As renal sodium handling plays a central role in salt-sensitive forms of hypertension, we investigated the relation of renal tubular sodium handling to abdominal adiposity, blood pressure and insulin ...
Magyar C E - - 2001
Acute hypertension rapidly inhibits proximal tubule (PT) Na,K-ATPase activity and sodium reabsorption 30 to 40%, increasing sodium and volume delivery to the thick ascending loop of Henle (TALH) and macula densa, providing the error signal for tubuloglomerular feedback. The hypothesis was tested in rats that an acute increase in sodium ...
Sherman R A - - 2001
The dialysis prescription can have a substantial impact on the frequency of intradialytic hypotension (IDH). Plasma volume will decline to a greater extent when the ultrafiltration (UF) rate is rapid (high interdialytic weight gains and/or short treatment time), favoring IDH. The relationship of the target weight to the euvolemic weight ...
Endoh M - - 2001
A low-protein diet (LPD) is known to affect the regulation of hemodynamics, and could contribute to the genesis of hypertension. We investigated the mechanism for the LPD-induced elevation of blood pressure in 52 Sprague-Dawley rats. Rats fed the LPD for 8 weeks showed a significantly higher blood pressure than those ...
Daugirdas J T - - 2001
Dialysis hypotension occurs because a large volume of blood water and solutes are removed over a short period of time, overwhelming normal compensatory mechanisms, including plasma refilling and reduction of venous capacity, due to reduction of pressure transmission to veins. In some patients, seemingly paradoxical and inappropriate reduction of sympathetic ...
Burke V - - 2001
In population studies, higher blood pressure has been associated with lower intake of protein and, possibly, lower fiber consumption. In the present randomized controlled trial, we sought to determine whether dietary protein and fiber had additive effects on blood pressure reduction in hypertensives. Treated hypertensive patients changed for 4 weeks ...
Lacchini S - - 2001
The aim of this study was to determine the contribution of NO to arterial pressure and heart rate variability in normotensive rats subjected to high sodium intake. Arterial pressure, heart rate, and arterial pressure and heart rate variability, baroreflex sensitivity, and pressure responsiveness were measured in male Wistar rats treated ...
Miyajima T - - 2001
This study was designed to clarify the effects of orally administered eicosapentaenoic acid (EPA) on blood pressure, intracellular sodium content, and cell membrane fatty acid composition in patients with essential hypertension. After a 4-week run-in period, a study group of 17 male patients was assigned to an 8-week treatment with ...
Anderson D E - - 2001
The pathogenesis of hypertension results from an interaction of genetic and environmental factors. Behavioral factors might participate in sodium sensitive forms of hypertension via a cascade of physiological responses triggered by conditioned inhibition of breathing. When an individual decreases ventilation sufficient to increase pCO2 but not sufficient to activate chemoreceptor ...
AteĊŸ K - - 2001
Effect of fluid and sodium removal on mortality in peritoneal dialysis patients. BACKGROUND: Adequacy of peritoneal dialysis (PD) traditionally is assessed using Kt/V(urea) and total creatinine clearance (TCC). However, this approach underestimates the importance of fluid and sodium removal. The aim of this study was to determine the effect of ...
Konishi Y - - 2001
Patients with renal parenchymal disease exhibit sodium-sensitive hypertension. We examined patients with immunoglobulin A (IgA) nephropathy to determine whether this sensitivity appears before hypertension begins and whether this sensitivity is related to histological damage. Thirty-eight patients with IgA nephropathy followed a diet with an ordinary sodium level for 1 week ...
Coruzzi P - - 2001
To evaluate the actual role of potassium depletion on blood pressure, 11 hypertensive patients were placed on a 10-day isocaloric diet providing a daily potassium intake of either 18 or 80 mmol, with each subject serving as his or her own control; the intake of sodium (220 mmol/day) and other ...
Conlin P R - - 2001
Several recently published clinical trials and epidemiological studies have added significant new data to our understanding of the impact of dietary modifications on blood pressure. Such studies confirm the blood pressure-lowering effects of sodium restriction, the consumption of diets that are low in fat and enriched in fruits and vegetables, ...
Uzu T - - 2001
Recently we found that, in non-dipper type of essential hypertensive patients who showed the lack of nocturnal fall in blood pressure, circadian rhythm of urinary sodium excretion rate was disturbed. In the present study we examined whether postural change in natriuresis is also disturbed in non-dippers. Sixteen inpatients with essential ...
Arjamaa O - - 2001
The objective of the study was to compare blood pressure and endocrine responses in a cold pressure test in young healthy subjects who had shown increased blood pressure during an acutely increased sodium intake. Subjects (n = 53) added 121 mmol sodium into their normal diet for one week. If ...
Locatelli F - - 2001
Blood pressure control is important during dialysis and the interdialytic period because of the frequency and potential seriousness of hypotension and hypertension. Water and sodium removal play an important role in the genesis of intradialytic cardiovascular instability or hypertension. Changing dialysate sodium concentrations without the aid of a kinetic model ...
Ortega O - - 2001
BACKGROUND/AIM: Sodium and water retention is common in peritoneal dialysis patients and contributes to cardiovascular disease. As peritoneal sodium removal depends partly on dwell time, and automated peritoneal dialysis (APD) often uses short dwell time exchanges, the aim of this study was to compare the 24-hour peritoneal sodium removal in ...
Kuhlmann U - - 2001
BACKGROUND: Haemodialysis dose has been shown to have a distinct impact upon the morbidity and mortality rate in patients on regular dialysis therapy. Accordingly, the adequacy of dialysis treatment should be guaranteed. METHODS: In 200 dialysis sessions two or three +/-10% dialysate conductivity variations were applied to test patient compliance ...
Jonkers I J - - 2001
OBJECTIVE: In hypertriglyceridemic patients, hypertension occurs frequently and may be associated with hyperinsulinemia and elevated plasma levels of free fatty acids (FFA). Besides the lipid-lowering effects, fibrates have been shown to reduce blood pressure in hypertensive patients. The present study was undertaken to investigate the effects of bezafibrate on hemodynamics ...
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