Hypertension and nutrition in the young: early intervention?

1986 ◽  
Vol 64 (6) ◽  
pp. 849-851 ◽  
Author(s):  
W. H. Weidman
Keyword(s):  
Blood Pressure ◽  
Body Size ◽  
Early Intervention ◽  
Family History ◽  
Children And Adolescents ◽  
Salt Intake ◽  
Sodium Intake ◽  
Primary Hypertension ◽  
Dietary Sodium ◽  
History Of

The few studies, carried out on infants, children, and adolescents, relating blood pressure to sodium intake have shown a weak positive correlation in some but not all individuals. The effect of body size on blood pressure confounds the interpretation of the effect of dietary sodium on blood pressure. There appear to be sodium-sensitive and sodium-unsensitive infants, children, and adolescents and is probably genetically transmitted. Most infants, children, and adolescents in industrialized populations have a salt intake far greater than required, and reduction in dietary sodium is safe and may be beneficial to those individuals with a family history of primary hypertension.

Blood Pressure and Intra-Erythrocyte Sodium during Normal and High Salt Intake in Middle-Aged Men: Relationship to Family History of Hypertension, and Neurogenic and Hormonal Variables

1984 ◽  
Vol 66 (4) ◽  
pp. 427-433 ◽  
Author(s):  
Ottar Gudmundsson ◽  
Hans Herlitz ◽  
Olof Jonsson ◽  
Thomas Hedner ◽  
Ove Andersson ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Family History ◽  
Salt Intake ◽  
Sodium Intake ◽  
Positive Family History ◽  
Sodium Content ◽  
High Salt Intake ◽  
History Of ◽  
Family History Of Hypertension ◽  
Erythrocyte Sodium

1. During 4 weeks 37 normotensive 50-year-old men identified by screening in a random population sample were given 12 g of NaCl daily, in addition to their usual dietary sodium intake. Blood pressure, heart rate, weight, urinary excretion of sodium, potassium and catecholamines, plasma aldosterone and noradrenaline and intra-erythrocyte sodium content were determined on normal and increased salt intake. The subjects were divided into those with a positive family history of hypertension (n = 11) and those without such a history (n = 26). 2. Systolic blood pressure and weight increased significantly irrespective of a positive family history of hypertension. 3. On normal salt intake intra-erythrocyte sodium content was significantly higher in those with a positive family history of hypertension. During high salt intake intra-erythrocyte sodium content decreased significantly in that group and the difference between the hereditary subgroups was no longer significant. 4. In the whole group urinary excretion of noradrenaline, adrenaline and dopamine increased whereas plasma aldosterone decreased during the increased salt intake. 5. Thus, in contrast to some earlier studies performed in young subjects, our results indicate that moderately increased sodium intake acts as a pressor agent in normotensive middle-aged men whether there was a positive family history of hypertension or not. We confirm that men with positive family history of hypertension have an increased intra-erythrocyte sodium content, and that an increase in salt intake seems to increase overall sympathetic activity.

scholarly journals The Effects of Short-Term Changes in Sodium Intake on Plasma Marinobufagenin Levels in Patients with Primary Salt-Sensitive and Salt-Insensitive Hypertension

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1502
Author(s):  
Katarzyna Łabno-Kirszniok ◽  
Agata Kujawa-Szewieczek ◽  
Andrzej Wiecek ◽  
Grzegorz Piecha
Keyword(s):  
Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Sodium Intake ◽  
Left Ventricular ◽  
Primary Hypertension ◽  
Dietary Sodium ◽  
Sodium Restriction ◽  
Short Term ◽  
Salt Loading ◽  
Dietary Sodium Restriction

Increased marinobufagenin (MBG) synthesis has been suggested in response to high dietary salt intake. The aim of this study was to determine the effects of short-term changes in sodium intake on plasma MBG levels in patients with primary salt-sensitive and salt-insensitive hypertension. In total, 51 patients with primary hypertension were evaluated during acute sodium restriction and sodium loading. Plasma or serum concentrations of MBG, natriuretic pro-peptides, aldosterone, sodium, potassium, as well as hematocrit (Hct) value, plasma renin activity (PRA) and urinary sodium and potassium excretion were measured. Ambulatory blood pressure monitoring (ABPM) and echocardiography were performed at baseline. In salt-sensitive patients with primary hypertension plasma MBG correlated positively with diastolic blood pressure (ABPM) and serum NT-proANP concentration at baseline and with serum NT-proANP concentration after dietary sodium restriction. In this subgroup plasma MBG concentration decreased during sodium restriction, and a parallel increase of PRA was observed. Acute salt loading further decreased plasma MBG concentration in salt-sensitive subjects in contrast to salt insensitive patients. No correlation was found between plasma MBG concentration and left ventricular mass index. In conclusion, in salt-sensitive hypertensive patients plasma MBG concentration correlates with 24-h diastolic blood pressure and dietary sodium restriction reduces plasma MBG levels. Decreased MBG secretion in response to acute salt loading may play an important role in the pathogenesis of salt sensitivity.

scholarly journals Sodium Intake and Hypertension

Nutrients ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1970 ◽  
Author(s):  
Grillo ◽  
Salvi ◽  
Coruzzi ◽  
Salvi ◽  
Parati
Keyword(s):  
Blood Pressure ◽  
Salt Intake ◽  
Sodium Intake ◽  
Peripheral Resistance ◽  
Dietary Sodium ◽  
Dietary Salt ◽  
High Sodium ◽  
Close Relationship ◽  
And Function ◽  
Modest Reduction

The close relationship between hypertension and dietary sodium intake is widely recognized and supported by several studies. A reduction in dietary sodium not only decreases the blood pressure and the incidence of hypertension, but is also associated with a reduction in morbidity and mortality from cardiovascular diseases. Prolonged modest reduction in salt intake induces a relevant fall in blood pressure in both hypertensive and normotensive individuals, irrespective of sex and ethnic group, with larger falls in systolic blood pressure for larger reductions in dietary salt. The high sodium intake and the increase in blood pressure levels are related to water retention, increase in systemic peripheral resistance, alterations in the endothelial function, changes in the structure and function of large elastic arteries, modification in sympathetic activity, and in the autonomic neuronal modulation of the cardiovascular system. In this review, we have focused on the effects of sodium intake on vascular hemodynamics and their implication in the pathogenesis of hypertension.

scholarly journals Dietary Salt-Related Knowledge, Attitude, Behaviors, and Hypertension in a Rural Northern Thailand Population

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 870-870
Author(s):  
Celina Morales ◽  
Pimbucha Rusmevichientong
Keyword(s):  
Blood Pressure ◽  
Logistic Regression ◽  
Family History ◽  
Regression Model ◽  
Logistic Regression Model ◽  
Salt Intake ◽  
Dietary Salt ◽  
Chiang Mai ◽  
Attitudes And Behaviors ◽  
History Of

Abstract Objectives The objectives of this study were to examine the dietary salt-related knowledge, attitudes, and behaviors associated with the prevalence of hypertension among adults residing in rural Northern Thailand. Methods A cross-sectional study utilizing convenience sampling was administered in San Pa Tong District, Chiang Mai, Thailand. The one-on-one interview was conducted to assess subject's knowledge, attitudes, and behaviors relating to their dietary salt intake. Various food frequencies for foods high in salt were also measured. Each subject's blood pressure was measured twice before and after the interview. A logistic regression model was used in the analysis to determine potential hypertension risk factors. Results A total of 403 adults participated in the study. A majority of participants were female (73.2%), and the average age was 62.5 years old. Half of participants reported a family history of hypertension and 32% of participants were hypertensive. The major results from the logistic regression model indicated positive attitudes towards decreasing salt intake lead to a lower chance of becoming hypertensive (OR = 0.934). However, a family history of high blood pressure (OR = 1.417), a higher knowledge score about foods high in salt (OR = 1.254), daily use of Monosodium Glutamate (MSG) in food preparation (OR = 1.959) and buying outside food to eat at home (OR = 5.692) lead to a higher chance of becoming hypertensive. Conclusions Our findings suggest higher knowledge does not decrease the chance of becoming hypertensive. However, there is a positive association between hypertension and dietary salt-related behaviors among adults living in rural Thai communities. More specifically, salt-reduction interventions should focus on promoting home-cooked meal preparation with lower salt substitutes to MSG. Funding Sources NIMHD Minority Health and Health Disparities Research Training Program (MHRT), California State University, Fullerton (Department of Public Health) and Chiang Mai University (Department of Community Medicine).

scholarly journals Effects of AT1A receptor deletion on blood pressure and sodium excretion during altered dietary salt intake

2002 ◽  
Vol 283 (3) ◽  
pp. F447-F453 ◽  
Author(s):  
Amy J. Mangrum ◽  
R. Ariel Gomez ◽  
Victoria F. Norwood
Keyword(s):  
Blood Pressure ◽  
Salt Intake ◽  
Sodium Intake ◽  
Dietary Sodium ◽  
Sodium Balance ◽  
Wild Type ◽  
Compensatory Mechanisms ◽  
Wide Range ◽  
Blood Pressures ◽  
Pressure Natriuresis

The present study was performed to investigate the role of type 1A ANG II (AT1A) receptors in regulating sodium balance and blood pressure maintenance during chronic dietary sodium variations in AT1A receptor-deficient (−/−) mice. Groups of AT1A (−/−) and wild-type mice were placed on a low (LS)-, normal (NS)-, or high-salt (HS) diet for 3 wk. AT1A(−/−) mice on an LS diet had high urinary volume and low blood pressure despite increased renin and aldosterone levels. On an HS diet, (−/−) mice demonstrated significant diuresis, yet blood pressure increased to levels greater than control littermates. There was no effect of dietary sodium intake on systolic blood pressures in wild-type animals. The pressure-natriuresis relationship in AT1A (−/−) mice demonstrated a shift to the left and a decreased slope compared with wild-type littermates. These studies demonstrate that mice lacking the AT1A receptor have blood pressures sensitive to changes in dietary sodium, marked alterations of the pressure-natriuresis relationship, and compensatory mechanisms capable of maintaining normal sodium balance across a wide range of sodium intakes.

Abstract 5: White Coat Hypertension Stability In Children And Adolescents: Pediatric Nephrology Research Consortium Study

Hypertension ◽  
2020 ◽  
Vol 76 (Suppl_1) ◽  
Author(s):  
Yosuke Miyashita ◽  
Coral HANEVOLD ◽  
Anna Faino ◽  
Julia Scher ◽  
Marc B Lande ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Family History ◽  
Children And Adolescents ◽  
White Coat ◽  
White Coat Hypertension ◽  
Mixed Effect ◽  
Interval Time ◽  
Obstructive Sleep ◽  
History Of

There is no pediatric data on whether white coat hypertension (WCH) is a precursor of sustained HTN. The objective of this study was to determine diagnosis changes on follow-up ambulatory blood pressure monitoring (ABPM) in children and adolescents diagnosed with WCH on their initial ABPM and to assess for predictive factors of progression to HTN. Retrospective review was conducted at 11 centers to identify patients with WCH diagnosed by ABPM and had repeat ABPM at least 6 months after the first study. Subjects with secondary HTN, on antihypertensive medication, and diabetes mellitus were excluded. Patients with ADHD were included in the study if medications were stable. Chart review included associated risk factors such as BMI, obstructive sleep apnea, and family history of HTN. ABPM phenotype was determined using the 2014 AHA guidelines. The association between abnormal ABPM diagnosis on follow-up and ABPM index and blood pressure load variables was assessed using univariable generalized linear mixed effect models. Significant ABPM index and load variables (based on p < 0.15) were subsequently added to a multivariable model with the following pre-specified covariates: gender, family history of HTN, age, BMI z-score, ADHD, and interval time between ABPMs. One hundred and one patients met criteria for inclusion with a median age of 14 years (80% males) and median interval time of 14 months (range: 6 – 55 months). On follow-up ABPM, 18% and 32% of patients demonstrated HTN and prehypertension respectively (18 and 32 of 101, respectively). In univariable modeling, awake and nocturnal systolic BP index ≥ 0.9 on the first ABPM were found to be significantly associated with progression to abnormal ABPM [unadjusted OR (95% CI) awake: 4.3 (1.2 – 14.6); nocturnal: 3.2 (1.0 – 10.1)]; however, these associations were not significant after adjusting for pre-specified covariates [adjusted OR (95% CI) awake: 2.7 (0.7-10.4); nocturnal: 2.6 (0.7 – 9.2)]. Approximately half of children and adolescents first diagnosed with WCH progressed to an abnormal ABPM phenotype on follow-up, suggesting that longitudinal follow-up with ABPM is indicated in pediatric WCH patients. We were unable to identify ABPM findings that might predict a higher risk for progression.

Dietary Sodium Restriction in the Management of Chronic Kidney Disease: A Systematic Review and Meta-Analysis of RCTs

2021 ◽  
Author(s):  
Sai Sidharth Manikandan ◽  
Murali Dhar
Keyword(s):  
Blood Pressure ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Salt Intake ◽  
Sodium Intake ◽  
Meta Analysis ◽  
Cost Effective ◽  
Mean Difference ◽  
Dietary Sodium ◽  
High Sodium

Abstract Background: Non-pharmacological strategies such as lowering sodium intake aim to protect renal function and delay the initiation of renal replacement therapy. It might also be a cost-effective method to improve chronic kidney disease (CKD) prognosis. We decided to perform a meta-analysis of randomized controlled trials (RCTs) to evaluate the effects of low versus high sodium intake in adults with CKD. Results:Our search strategy yielded seven studies from six countries with 465 participants. The overall effect on restricted sodium intake favored reduction in systolic blood pressure with an overall mean difference of -6.14(95% CI: -9.52, -2.76) and reduction in diastolic blood pressure with a mean difference of -3.08 (95% CI: -4.62, -1.55). There was lowering of estimated glomerular filtration rate (eGFR), however the same was not statistically significant.Conclusion:The study found that restricted salt intake could significantly reduce systolic and diastolic BP. Further, multi-center RCTs for longer durations across different stages of CKD could effectively assess the effects of restricted sodium intake on vital parameters. Such study designs could also help clinicians identify the optimal intake of dietary sodium to achieve better renal and cardio vascular outcomes.

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