COMPARISON OF BLOOD PRESSURE, SODIUM INTAKE, AND OTHER VARIABLES IN OFFSPRING WITH AND WITHOUT A FAMILY HISTORY OF HIGH BLOOD PRESSURE

The Lancet ◽  
1983 ◽  
Vol 321 (8336) ◽  
pp. 1245-1248 ◽  
Author(s):  
G WATT
1984 ◽  
Vol 66 (4) ◽  
pp. 427-433 ◽  
Author(s):  
Ottar Gudmundsson ◽  
Hans Herlitz ◽  
Olof Jonsson ◽  
Thomas Hedner ◽  
Ove Andersson ◽  
...  

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.


2018 ◽  
Vol 14 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Rufus O Akinyemi ◽  
Fred S Sarfo ◽  
Joshua Akinyemi ◽  
Arti Singh ◽  
Matthew Onoja Akpa ◽  
...  

Background It is crucial to assess genomic literacy related to stroke among Africans in preparation for the ethical, legal and societal implications of the genetic revolution which has begun in Africa. Objective To assess the knowledge, attitudes and practices (KAP) of West Africans about stroke genetic studies. Methods A comparative cross-sectional study was conducted among stroke patients and stroke-free controls recruited across 15 sites in Ghana and Nigeria. Participants' knowledge of heritability of stroke, willingness to undergo genetic testing and perception of the potential benefits of stroke genetic research were assessed using interviewer-administered questionnaire. Descriptive, frequency distribution and multiple regression analyses were performed. Results Only 49% of 2029 stroke patients and 57% of 2603 stroke-free individuals knew that stroke was a heritable disorder. Among those who knew, 90% were willing to undergo genetic testing. Knowledge of stroke heritability was associated with having at least post-secondary education (OR 1.51, 1.25–1.81) and a family history of stroke (OR 1.20, 1.03–1.39) while Islamic religion (OR=0.82, CI: 0.72–0.94), being currently unmarried (OR = 0.81, CI: 0.70–0.92), and alcohol use (OR = 0.78, CI: 0.67–0.91) were associated with lower odds of awareness of stroke as a heritable disorder. Willingness to undergo genetic testing for stroke was associated with having a family history of stroke (OR 1.34, 1.03–1.74) but inversely associated with a medical history of high blood pressure (OR = 0.79, 0.65–0.96). Conclusion To further improve knowledge of stroke heritability and willingness to embrace genetic testing for stroke, individuals with less formal education, history of high blood pressure and no family history of stroke require targeted interventions.


1981 ◽  
Vol 61 (s7) ◽  
pp. 13s-15s ◽  
Author(s):  
M. Canali ◽  
L. Borghi ◽  
E. Sani ◽  
A. Curti ◽  
A. Montanari ◽  
...  

1. Erythrocyte lithium—sodium counter-transport was measured in 46 normotensive healthy controls without family history of hypertension, 15 subjects with essential hypertension, but without evidence of family history of high blood pressure, and 43 subjects with essential hypertension and at least one hypertensive first-degree relative. 2. Mean values (mmol h−1 l−1 of erythrocytes) were 0.248 ± 0.092 in controls, 0.258 ± 0.087 in hypertensive subjects without family history (not significant vs controls), 0.360 ± 0.115 in hypertensive subjects with family history of hypertension (P < 0.001 vs controls), 0.334 ± 0.117 in all hypertensive subjects, both with and without family history (P < 0.001 vs controls). 3. Our data confirm the finding of an increased erythrocyte lithium-sodium counter-transport, but with a significant overlap between essential hypertension and control values. Lithium-sodium countertransport is higher only in hypertensive subjects with at least one hypertensive first-degree relative. 4. We suggest that the increase of lithium-sodium countertransport in erythrocytes is not a consistent marker of essential hypertension. It seems to be associated with the family prevalence and/or the hereditability of hypertension, rather than with high blood pressure per se.


2019 ◽  
Author(s):  
Marilia Cruz Guttier ◽  
Raquel Siqueira Barcelos ◽  
Rodrigo Wiltgen Ferreira ◽  
Caroline Cardozo Bortolotto ◽  
William Dartora ◽  
...  

Abstract Background: We evaluated the prevalence and the factors associated with repeated high systolic (SBP) and diastolic blood pressure (DBP) at 6- and 11-year follow-ups of children from the Pelotas (Brazil) 2004 Birth Cohort. Methods: All live births to mothers living in the urban area of Pelotas were enrolled in the cohort. Blood pressure (BP) values were transformed into Z-scores by sex, age, and height. High SBP and DBP were defined as repeated systolic and diastolic BP Z-scores on the ≥95 th percentile at the two follow-ups. Prevalence (95% confidence interval) of repeated high SBP, DBP, and both (SDBP) were calculated. Associations with maternal and child characteristics were explored in crude and adjusted logistic regression analyses. Results: A total of 3,182 cohort participants were analyzed. Prevalence of repeated high SBP, DBP and SDBP was 1.7% (1.2-2.1%), 2.3% (1.8-2.9%) and 1.2% (0.9-1.6%), respectively. Repeated high SBP was associated with males, gestational diabetes mellitus (2.92; 1.13-7.58) and obesity at 11 years (2.44; 1.29-4.59); while repeated high DBP was associated with females, family history of hypertension from both sides (3.95; 1.59-9.85) and gestational age <34 weeks (4.08; 1.52-10.96). Repeated high SDBP was not associated with any of the characteristics investigated . Conclusion: Prevalence of repeated high SBP, DBP, and SDBP were within the expected distribution at the population level. Nonetheless, gestational diabetes mellitus, obesity, family history of hypertension, and prematurity increased the risk of repeated high blood pressure measured at two occasions five years apart.


1986 ◽  
Vol 64 (6) ◽  
pp. 849-851 ◽  
Author(s):  
W. H. Weidman

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.


2019 ◽  
Author(s):  
Marilia Cruz Guttier ◽  
Raquel Siqueira Barcelos ◽  
Rodrigo Wiltgen Pereira ◽  
Caroline Cardozo Bortolotto ◽  
William Dartora ◽  
...  

Abstract Background We evaluated the prevalence and the factors associated with repeated high systolic (SBP) and diastolic blood pressure (DBP) at 6- and 11-year follow-ups of children from the Pelotas (Brazil) 2004 Birth Cohort. Methods All live births to mothers living in the urban area of Pelotas were enrolled in the cohort. Blood pressure (BP) values were transformed into Z-scores according to sex, age and height. High SBP and DBP were defined as repeated systolic and diastolic BP Z-scores on the ≥95th percentile at the two follow-ups. Prevalence (95% confidence interval) of repeated high SBP, DBP and both (SDBP) were calculated. Associations with maternal and child characteristics were explored in crude and adjusted logistic regression analyses. Results 3182 cohort participants were analyzed. Prevalence of repeated high SBP, DBP and SDBP was 1.7% (1.2-2.1%), 2.3% (1.8-2.9%) and 1.2% (0.9-1.6%), respectively. Repeated high SBP was associated with male sex, gestational diabetes mellitus (2.92; 1.13-7.58) and obesity at 11 years (2.44; 1.29-4.59); while repeated high DBP was associated with female sex, family history of hypertension from both sides (3.95; 1.59-9.85) and gestational age <34 weeks (4.08; 1.52-10.96). Repeated high SDBP was not associated with any of the characteristcs investigated. Conclusion Prevalence of repeated high SBP, DBP and SDBP were within the expected distribution at the population level. Nonethless, gestational diabetes mellitus, obesity, family history of hypertension, and prematurity increased the risk of repeated high blood pressure measured at two occasions five years apart.


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