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Metformin is an antidiabetic drug that is widely used to treat patients with diabetes mellitus. Recent studies have reported that treatment with metformin not only improved blood glucose levels but also reduced blood pressure. However, it remains unclear how metformin reduces blood pressure. We hypothesized that metformin affects sodium reabsorption in the kidneys.
There is a growing tendency for physicians to prescribe exercise in accordance with the 'exercise is medicine' global health initiative. However, the exercise-pharmacologic interactions for controlling blood pressure are not well described. Our purpose was to study whether angiotensin II receptor type 1 blocker (ARB) antihypertensive medicine enhances the blood pressure-lowering effects of intense exercise.
This study was performed to investigate whether genetic variation in the epithelial sodium channel (ENaC) is associated with 24-h urinary sodium excretion and blood pressure. A total of 3345 participants of the KoGES_Ansan and Ansung study were eligible for this study. Genomic DNA samples were isolated from peripheral blood and genotyped on the Affymetrix Genome-Wide Human SNP Array 5.0. Thirty-four single nucleotide polymorphisms (SNPs) were extracted for gene regions (, , and ) as additive components by u...
Recent studies have demonstrated that the renal (pro)renin receptor (PRR) regulates expression of the alpha subunit of the epithelial sodium channel (α-ENaC). In this study we hypothesized that the renal PRR mediates high fat diet (HFD)-induced sodium retention and elevated systolic blood pressure (SBP) by enhancing expression of the epithelial sodium channel (α-ENaC). In our study we used a recently developed inducible nephron specific PRR knockout mouse. Mice (n = 6 each group) were allocated to receive...
Salt sensitivity of blood pressure affects >30% of the hypertensive and >15% of the normotensive population. Variants of the electrogenic sodium bicarbonate cotransporter NBCe2 gene, SLC4A5, are associated with increased blood pressure in several ethnic groups. SLC4A5 variants are also highly associated with salt sensitivity, independent of hypertension. However, little is known about how NBCe2 contributes to salt sensitivity, although NBCe2 regulates renal tubular sodium bicarbonate transport. We hypothesi...
Regular consumption of a diet high in sodium, energy dense foods, fat content, refined carbohydrates, added sugar and low in fruits and vegetables contributes to an increased risk of developing hypertension (HTN) and cardiovascular disease. This review aims to provide a synopsis of evidence-based dietary approaches that have been effective in lowering blood pressure (BP) in pre-HTN and individuals with HTN.
Considering sex differences, salt sensitivity and insulin resistance (IR), the effect of sodium restriction and increased potassium intake on blood pressure remains unclear in normotensive Asian individuals, compared to that in hypertensive patients.
Aldosterone infusion into the 4 ventricle (4 V), upstream the nucleus of the solitary tract (NTS), produces strong 0.3 M NaCl intake. In the present study, we investigated whether aldosterone infusion into the 4 V activates HSD2 neurons, changes renal excretion, or alters blood pressure and cardiovascular reflexes. Chronic infusion of aldosterone (100 ng/h) into the 4 V increased daily 0.3 M NaCl intake (up to 44 ± 10, vs. vehicle: 5.6 ± 3.4 ml/24 h) and also c-Fos expression in HSD2 neurons in the NTS an...
Portal hypertension (PH) is potentially life-threatening condition. We investigated the effects of indole and dietary tryptophan, a substrate for gut bacterial production of indole, on portal blood pressure (PBP), portal blood flow (PBF) and arterial blood pressure (ABP) in Sprague-Dawley rats (SD) and SD with PH induced by liver cirrhosis (SD-PH). Hemodynamics were recorded in anaesthetized, male, 28-week-old, SD and SD-PH at baseline and after the administration of either a vehicle or indole into the colo...
Blood pressure is a basic feature of monitoring during anaesthesia. However, it is very unclear what blood pressures are normal during anaesthesia in children. Furthermore, the clinical consequences of low blood pressure are also uncertain. Similarly, it is unclear when to initiate therapy for hypotension during anaesthesia. This review summarizes the most recent development on the interpretation of blood pressure measurements in children and the relation of low blood pressure to clinical outcome.
To investigate whether the invasively obtained central aortic systolic blood pressure (CSBP) predicts chronic kidney disease (CKD) better than brachial systolic blood pressure (SBP), brachial diastolic blood pressure (DBP) and brachial pulse pressure (PP) in the middle-aged Chinese population.
Contributions of mean and shape of blood pressure distribution to worldwide trends and variations in raised blood pressure: a pooled analysis of 1018 population-based measurement studies with 88.6 million participants.
Change in the prevalence of raised blood pressure could be due to both shifts in the entire distribution of blood pressure (representing the combined effects of public health interventions and secular trends) and changes in its high-blood-pressure tail (representing successful clinical interventions to control blood pressure in the hypertensive population). Our aim was to quantify the contributions of these two phenomena to the worldwide trends in the prevalence of raised blood pressure.
It is known that home blood pressure (HBP) is a more reliable assessment of hypertension treatments than clinical blood pressure (BP). Despite this, HBP response to a salt substitute has only been evaluated by one study which, did not look at the salt substitute's effect on family members and did not analyze by age, gender, or BP degree. The aim of this current study was to assess the effects of a low-sodium and high-potassium salt substitute on HBP among hypertensive patients and their family members.
Low blood pressure is rather widespread among adolescents and frequently accompanied by complaints. Two single-center, double-blinded, randomized, and placebo-controlled trials were performed with adolescent participants in the age range of 14 - 17 y having a systolic blood pressure below 118 mmHg (boys) or 110 mmHg (girls). They received a single dose of 20 drops of a fixed combination of natural D-camphor and an ethanolic extract from fresh berries (CCC) or of an ethanolic placebo. The efficacy...
Men and women differ in the prevalence, pathophysiology and control rate of hypertension in an age-dependent manner. The renal endothelin system plays a central role in sex differences in blood pressure regulation by control of sodium excretion and vascular function. Improving our understanding of the sex differences in the endothelin system, especially in regard to blood pressure regulation and sodium homeostasis, will fill a significant gap in our knowledge and may identify sex-specific therapeutic target...
BACKGROUND Fibroblast growth factor 23 (FGF23), a prominent regulator of phosphate and calcium metabolism, regulates sodium excretion in distal tubules through sodium-chloride cotransporter. This effect regulates blood pressure. Salt intake exerts effects on serum levels of FGF23 in mice. The aim of this study was to explore whether salt intervention affects serum concentrations of FGF23 in Chinese adults. MATERIAL AND METHODS We enrolled 44 participants from Lantian, a rural community of Shaanxi, China. Al...
Paper home blood pressure (HBP) charts are commonly brought to physicians at office visits. The precision and accuracy of mental calculations of blood pressure (BP) means are not known.
The classical concepts of human sodium balance include (i) a total pool of Na+ of ≈4200 mmol (total body sodium, TBS) distributed primarily in the extracellular fluid (ECV) and bone, (ii) intake variations of 0.03 to ≈6 mmol ∙ (kg body mass ∙ day), (iii) asymptotic transitions between steady states with a halftime (T1/2) of 21h, (iii) changes in TBS driven by sodium intake measuring ≈1.3 d (ΔTBS/Δ(Na+ intake/d)), (iv) adjustment of Na+ excretion to match any diet thus providing metabolic steady ...
Although inaccurate, non-reproducible blood pressure values can result from non-standardized assessments, recommended approaches to standardize blood pressure measurement are often not followed in research studies.
Blood pressure has been traditionally measured at peripheral arteries. In the past decade evidence has grown, that central aortic blood pressure may be a more powerful predictor for cardiovascular events, but data on its regulation are rare. The present work examines the impact of microgravity on central blood pressure for the first time.
Clinical practice guidelines have traditionally recommended blood pressure treatment based primarily on blood pressure thresholds. In contrast, using predicted cardiovascular risk has been advocated as a more effective strategy to guide treatment decisions for cardiovascular disease (CVD) prevention. We aimed to compare outcomes from a blood pressure-lowering treatment strategy based on predicted cardiovascular risk with one based on systolic blood pressure (SBP) level.
Numerous studies have shown a stronger relationship between ambulatory blood pressure (ABP), particularly night ABP, and cardiovascular events/mortality than for office blood pressure (OBP). A previous clinical trial (Syst-Eur) showed that pretreatment ABP was only a better predictor of outcome than OBP in placebo-treated participants. The current study in treated elderly hypertensives from the Second Australian National Blood Pressure study (ANBP2) examined whether pretreatment ABP was a better predictor o...
Arterial hypertension is one of the leading factors aggravating the course of chronic kidney disease (CKD). It seems that the novel parameters used in the assessment of the blood pressure (BP) load (i.e. central blood pressure, nighttime blood pressure) may be more precise in predicting the cardiovascular risk and the progression of CKD in comparison with the traditional peripheral blood pressure measurements in the office conditions. The aim of the study was to assess the impact of the central, or nighttim...
The 2017 US guidelines for pediatric hypertension place considerable emphasis on blood pressure measurements, which are the cornerstone for hypertension diagnosis and management. It is recognized that when the diagnosis of hypertension is based solely on office blood pressure measurements, many children are misclassified (over- or underdiagnosed). Therefore, out-of-office blood pressure evaluations using ambulatory or home blood pressure monitoring are often necessary to obtain an accurate diagnosis. Strong...