Effects of Gene-Environment Interactions on Cardiovascular Risk Factors in Chinese Adolescent Twins

1984 ◽  
Vol 33 (3) ◽  
pp. 383-396
Author(s):  
C.J. Chen ◽  
B.H. Cohen ◽  
E.L. Diamond ◽  
T.M. Lin ◽  
J.S. Chen
Keyword(s):  
Blood Pressure ◽  
Serum Cholesterol ◽  
Population Based ◽  
Serum Triglycerides ◽  
Gene Environment ◽  
Chinese Adolescent ◽  
Environmental Agents ◽  
Animal Organ ◽  
Adolescent Twins ◽  
The Impact

AbstractA population-based sample of 73 male and 77 female monozygotic (MZ), and 41 male and 33 female dizygotic (DZ) Chinese adolescent twin pairs were studied to assess effects of gene-environment interactions of systolic blood pressure (SBP), diastolic blood pressure (DBP), serum cholesterol and triglyceride levels. Intrapair concordance in BP levels was found to be significantly associated with the interaction of zygosity and salty foods preference and also with that of zygosity and vegetable preference. A consistently positive and statistically significant association was observed between the intrapair difference in serum cholesterol and the interaction of zygosity and animal organ preference; while intrapair concordance in serum cholesterol was associated with the interaction of zygosity and milk consumption. Intrapair difference in serum triglycerides was associated with the interaction of zygosity and fish preference, and a significant association was also found between the intrapair concordance in serum triglycerides and the interaction of zygosity and sweets preference. These observations suggest that the impact of these environmental agents may be influenced by the genotype.

Genetic Variance and Heritability of Cardiovascular Risk Factors in Chinese Adolescent Twins

1984 ◽  
Vol 33 (3) ◽  
pp. 363-373 ◽  
Author(s):  
C.J. Chen ◽  
B.H. Cohen ◽  
E.L. Diamond ◽  
T.M. Lin ◽  
J.S. Chen
Keyword(s):  
Blood Pressure ◽  
Environmental Factors ◽  
Serum Cholesterol ◽  
Genetic Variance ◽  
Dietary Preference ◽  
Chinese Adolescent ◽  
Taipei City ◽  
Anthropometric Characteristics ◽  
Heritability Estimates ◽  
Adolescent Twins

AbstractIn order to estimate genetic variance and heritability of systolic blood pressure (SBP), diastolic blood pressure (DBP), serum cholesterol and triglyceride levels, a total of 235 (79 male and 82 female MZ, 41 male and 33 female DZ) twin pairs, recruited from 12 junior high schools in Taipei city, were studied. Statistically significant genetic variance observed for SBP, DBP, serum cholesterol and triglycerides persisted after adjustment for age and anthropometric characteristics. However, further adjustment for dietary preference, beverage consumption, and other host and environmental factors gave different results: genetic variance of adjusted SBP and DBP was still significant, while significance was found only in males for cholesterol and in neither males nor females for triglycerides. Heritability estimates of unadjusted SBP, DBP, cholesterol and triglycerides were 0.27, 0.45, 0.21 and 0.41, respectively, for males, and 0.15, 0.42, 0.41 and 0.82, respectively, for females. After adjustment for age, anthropometric characteristics, host and environmental factors, the heritability estimates of SBP, DBP and cholesterol were 0.64, 0.72 and 0.50, respectively, for males, and 0.40, 0.60 and 0.37, respectively, for females.

scholarly journals Impact of Patient Beliefs on Blood Pressure Control in the General Population: Findings from the Population-Based STAAB Cohort Study

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Theresa Tiffe ◽  
Caroline Morbach ◽  
Viktoria Rücker ◽  
Götz Gelbrich ◽  
Martin Wagner ◽  
...  
Keyword(s):  
Blood Pressure ◽  
General Population ◽  
Blood Pressure Control ◽  
Antihypertensive Medication ◽  
Pressure Control ◽  
Population Based ◽  
Blood Pressure Target ◽  
Successful Implementation ◽  
Inverse Association ◽  
The Impact

Background. Effective antihypertensive treatment depends on patient compliance regarding prescribed medications. We assessed the impact of beliefs related towards antihypertensive medication on blood pressure control in a population-based sample treated for hypertension. Methods. We used data from the Characteristics and Course of Heart Failure Stages A-B and Determinants of Progression (STAAB) study investigating 5000 inhabitants aged 30 to 79 years from the general population of Würzburg, Germany. The Beliefs about Medicines Questionnaire German Version (BMQ-D) was provided in a subsample without established cardiovascular diseases (CVD) treated for hypertension. We evaluated the association between inadequately controlled hypertension (systolic RR >140/90 mmHg; >140/85 mmHg in diabetics) and reported concerns about and necessity of antihypertensive medication. Results. Data from 293 participants (49.5% women, median age 64 years [quartiles 56.0; 69.0]) entered the analysis. Despite medication, half of the participants (49.8%) were above the recommended blood pressure target. Stratified for sex, inadequately controlled hypertension was less frequent in women reporting higher levels of concerns (OR 0.36; 95%CI 0.17-0.74), whereas no such association was apparent in men. We found no association for specific-necessity in any model. Conclusion. Beliefs regarding the necessity of prescribed medication did not affect hypertension control. An inverse association between concerns about medication and inappropriately controlled hypertension was found for women only. Our findings highlight that medication-related beliefs constitute a serious barrier of successful implementation of treatment guidelines and underline the role of educational interventions taking into account sex-related differences.

scholarly journals Office, Central, and Ambulatory Blood Pressure for Predicting First Stroke in Older Adults: A Community-Based Cohort Study

Hypertension ◽  
2021 ◽  
Author(s):  
Kenji Matsumoto ◽  
Zhezhen Jin ◽  
Shunichi Homma ◽  
Mitchell S.V. Elkind ◽  
Joseph E. Schwartz ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Risk Model ◽  
Population Based ◽  
Applanation Tonometry ◽  
Competing Risk ◽  
Community Based ◽  
Older Population ◽  
Competing Risk Model ◽  
The Impact

Hypertension is the most prevalent modifiable risk factor for stroke. Office blood pressure (BP) measurements may have limitations in defining the impact of hypertension on stroke. Our aim was to compare the stroke risk for office, central, and ambulatory BP measurements in a predominantly older population-based prospective cohort. Participants in the CABL study (Cardiovascular Abnormalities and Brain Lesions; n=816; mean age, 70.8±9.0 years; 39.8% men) underwent applanation tonometry of the radial artery for central BP and 24-hour ambulatory BP monitoring. During a follow-up of 9.6±3.1 years, stroke occurred in 76 participants (9.3%). Among office BP variables, only diastolic BP was associated with stroke in multivariable competing risk model ( P =0.016). None of the central BP variables showed a significant association with stroke. Conversely, all ambulatory systolic and diastolic BP variables were significantly associated with stroke after adjustment for clinical confounders (all P <0.005). In an additional multivariable competing risk model including both ambulatory systolic and diastolic BP values obtained at the same time of the day, diastolic BP was more strongly associated with stroke than systolic BP in 24-hour, daytime, and nighttime periods (all P <0.05). Therefore, in a predominantly older population-based cohort, office diastolic BP was weakly associated with incident stroke; no central BP variable was prognostic of stroke. However, all ambulatory systolic and diastolic BP values were significantly associated with stroke in multivariable competing risk analyses. Moreover, ambulatory diastolic BP was a stronger predictor of stroke than ambulatory systolic BP.

Blood Coagulation and Fibrinolysis in a Random Sample of 788 Men 54 Years Old

1972 ◽  
Vol 28 (01) ◽  
pp. 099-108 ◽  
Author(s):  
Kristoffer Korsan-Bengtsen ◽  
Lars Wilhelmsen ◽  
Gösta Tibblin
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Lung Function ◽  
Blood Sugar ◽  
Serum Cholesterol ◽  
Negative Correlation ◽  
Fibrinolytic Activity ◽  
Serum Triglycerides ◽  
Activity Factor ◽  
Factor Ii

SummaryIn a population of 788 men 54 years of age plasma clotting times, factor II-VII-X activity, factor VIII, fibrinogen, fibrinolytic activity and plasminogen have been compared to anthropomorphic variables, blood lipids, blood sugar, blood pressure, heart rate, lung function and smoking.It was found by multiple regression analyses that fibrinogen, plasminogen and factor II-VII-X activity were correlated to serum cholesterol, and secondary to systolic blood pressure, heart rate and blood sugar.Independent of these correlations, fibrinogen, plasminogen and factor II-VII-X activity were also negatively correlated to FEV1 and VC which are measures of lung function.Smokers have a higher fibrinogen level than non smokers and this is not due to the decreased lung function in smokers. PTT (partial thromboplastin time) carried out in silicone tubes is correlated to serum cholesterol.There is a negative correlation between fibrinolytic activity and weight, subscapular and thorax skinfolds, chest and waist chcumference indicating that obese subjects have a low fibrinolytic activity. There is also a negative correlation between fibrinolytic activity and serum triglycerides but this is insignificant when the effect of obesity is taken into account.

scholarly journals Blood Pressure Variability and Incidence of New-Onset Atrial Fibrillation

Hypertension ◽  
2020 ◽  
Vol 75 (2) ◽  
pp. 309-315 ◽  
Author(s):  
So-Ryoung Lee ◽  
You-Jung Choi ◽  
Eue-Keun Choi ◽  
Kyung-Do Han ◽  
Euijae Lee ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Blood Pressure Variability ◽  
Blood Pressure Measurement ◽  
Population Based ◽  
Increased Risk ◽  
Complete Set ◽  
The Impact ◽  
Fourth Quartile

Blood pressure variability is a well-known risk factor for cardiovascular disease, but its association with atrial fibrillation (AF) is uncertain. We aimed to evaluate the association between visit-to-visit blood pressure variability and incident AF. This population-based cohort study used database from the Health Screening Cohort, which contained a complete set of medical claims and a biannual health checkup information of the Koran population. A total of 8 063 922 individuals who had at least 3 health checkups with blood pressure measurement between 2004 and 2010 were collected after excluding subjects with preexisting AF. Blood pressure variability was defined as variability independence of the mean and was divided into 4 quartiles. During a mean follow-up of 6.8 years, 140 086 subjects were newly diagnosed with AF. The highest blood pressure variability (fourth quartile) was associated with an increased risk of AF (hazard ratio, 95% CI; systolic blood pressure: 1.06, 1.05–1.08; diastolic blood pressure: 1.07, 1.05–1.08) compared with the lowest (first quartile). Among subjects in the fourth quartile in both systolic and diastolic blood pressure variability, the risk of AF was 7.6% higher than those in the first quartile. Moreover, this result was consistent in both patients with or without prevalent hypertension. In subgroup analysis, the impact of high blood pressure variability on AF development was stronger in high-risk subjects, who were older (≥65 years), with diabetes mellitus or chronic kidney disease. Our findings demonstrated that higher blood pressure variability was associated with a modestly increased risk of AF.

scholarly journals Impact of the common MTHFR 677C→T polymorphism on blood pressure in adulthood and role of riboflavin in modifying the genetic risk of hypertension: evidence from the JINGO project

BMC Medicine ◽  
2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Mary Ward ◽  
Catherine F. Hughes ◽  
J. J. Strain ◽  
Rosie Reilly ◽  
Conal Cunningham ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Genetic Risk ◽  
Antihypertensive Treatment ◽  
Methylenetetrahydrofolate Reductase ◽  
Randomised Trial ◽  
Population Based ◽  
Nutrition Survey ◽  
Increased Risk ◽  
The Impact ◽  
Riboflavin Status

Abstract Background Genome-wide and clinical studies have linked the 677C→T polymorphism in the gene encoding methylenetetrahydrofolate reductase (MTHFR) with hypertension, whilst limited evidence shows that intervention with riboflavin (i.e. the MTHFR co-factor) can lower blood pressure (BP) in hypertensive patients with the variant MTHFR 677TT genotype. We investigated the impact of this common polymorphism on BP throughout adulthood and hypothesised that riboflavin status would modulate the genetic risk of hypertension. Methods Observational data on 6076 adults of 18–102 years were drawn from the Joint Irish Nutrigenomics Organisation project, comprising the Trinity-Ulster Department of Agriculture (TUDA; volunteer sample) and the National Adult Nutrition Survey (NANS; population-based sample) cohorts. Participants were recruited from the Republic of Ireland and Northern Ireland (UK) in 2008–2012 using standardised methods. Results The variant MTHFR 677TT genotype was identified in 12% of adults. From 18 to 70 years, this genotype was associated with an increased risk of hypertension (i.e. systolic BP ≥ 140 and/or a diastolic BP ≥ 90 mmHg): odds ratio (OR) 1.42, 95% confidence interval (CI) 1.07 to 1.90; P = 0.016, after adjustment for antihypertensive drug use and other significant factors, namely, age, male sex, BMI, alcohol and total cholesterol. Low or deficient biomarker status of riboflavin (observed in 30.2% and 30.0% of participants, respectively) exacerbated the genetic risk of hypertension, with a 3-fold increased risk for the TT genotype in combination with deficient riboflavin status (OR 3.00, 95% CI, 1.34–6.68; P = 0.007) relative to the CC genotype combined with normal riboflavin status. Up to 65 years, we observed poorer BP control rates on antihypertensive treatment in participants with the TT genotype (30%) compared to those without this variant, CT (37%) and CC (45%) genotypes (P < 0.027). Conclusions The MTHFR 677TT genotype is associated with higher BP independently of homocysteine and predisposes adults to an increased risk of hypertension and poorer BP control with antihypertensive treatment, whilst better riboflavin status is associated with a reduced genetic risk. Riboflavin intervention may thus offer a personalised approach to prevent the onset of hypertension in adults with the TT genotype; however, this requires confirmation in a randomised trial in non-hypertensive adults.

scholarly journals Survival to Age 90 in Men: The Tromsø Study 1974–2018

2019 ◽  
Vol 16 (11) ◽  
pp. 2028
Author(s):  
Tormod Brenn
Keyword(s):  
Physical Activity ◽  
Risk Factors ◽  
Blood Pressure ◽  
High Blood Pressure ◽  
Low Income ◽  
Population Based ◽  
Individual Risk ◽  
High Cholesterol ◽  
Related Data ◽  
The Impact

The 738 oldest men who participated in the first survey of the population-based Tromsø Study (Tromsø 1) in Norway in 1974 have now had the chance to reach the age of 90 years. The men were also invited to subsequent surveys (Tromsø 2–7, 1979–2016) and have been followed up for all-cause deaths. This study sought to investigate what could be learned from how these men have fared. The men were born in 1925–1928 and similar health-related data from questionnaires, physical examination, and blood samples are available for all surveys. Survival curves over various variable strata were applied to evaluate the impact of individual risk factors and combinations of risk factors on all-cause deaths. At the end of 2018, 118 (16.0%) of the men had reached 90 years of age. Smoking in 1974 was the strongest single risk factor associated with survival, with observed percentages of men reaching 90 years being 26.3, 25.7, and 10.8 for never, former, and current smokers, respectively. Significant effects on survival were also found for physical inactivity, low income, being unmarried, high blood pressure, and high cholesterol. For men with 0–4 of these risk factors, the percentages reaching 90 years were 33.3, 24.9, 12.4, 14.4, and 1.5, respectively. Quitting smoking and increasing physical activity before 55 years of age improved survival significantly. Men should refrain from smoking and increase their physical activity, especially those with low income, those who are unmarried, and those with high blood pressure and high cholesterol.

scholarly journals The 10-year incidence of hypertension across blood pressure categories in a population-based cohort in southwestern Sweden

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ulf Lindblad ◽  
Klara Lundholm ◽  
Jenny Eckner ◽  
Ying Li ◽  
Lennart Råstam ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Lifestyle Modification ◽  
Population Based ◽  
Baseline Blood Pressure ◽  
Swedish Population ◽  
Incident Hypertension ◽  
Pressure Lowering ◽  
Optimal Blood Pressure ◽  
The Impact

Abstract Background To explore the determinants of incident hypertension, and especially the impact of baseline blood pressure categories, in a representative Swedish population. Methods A 10-year longitudinal study of residents aged 30–74. Blood pressures were measured and categorized according to ESH guidelines with optimal blood pressure < 120/80 mmHg, normal 120–129/80–84 mmHg, and high normal 130–139/85–89 mmHg. Incident hypertension was defined as ongoing treatment or three consecutive blood pressure readings ≥ 140/ ≥ 90 mmHg (one or both) at follow-up, while those with ≥ 140 and/or ≥ 90 mmHg at only one or two visits were labelled as unstable. After excluding subjects with hypertension, ongoing blood pressure lowering medication or a previous CVD event at baseline, 1099 remained for further analyses. Results Sixteen (2.6%) subjects with optimal baseline blood pressure had hypertension at follow up. Corresponding numbers for subjects with normal, high normal and unstable blood pressure were 55 (19.4%), 50 (39.1%) and 46 (74.2%), respectively. Compared with subjects in optimal group those in normal, high normal and unstable blood pressure categories had significantly higher risk to develop manifest hypertension with odds ratios OR and (95% CI) of 7.04 (3.89–12.7), 17.1 (8.88–33.0) and 84.2 (37.4–190), respectively, with adjustment for age, BMI and family history for hypertension. The progression to hypertension was also independently predicted by BMI (p < 0.001), however, not by age. Conclusions Subjects with high normal or unstable blood pressure should be identified in clinical practice, evaluated for global hypertension risk and offered personalized advice on lifestyle modification for early prevention of manifest hypertension and cardiovascular disease.

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