Increased Risk Of Hypertension Research Articles

Association between liver fat level and risk of hypertension: evidence from a Chinese health examination dataset.

Hypertension development is predominantly influenced by inflammation, excessive fat deposition, and metabolic irregularities. Among these factors, liver fat accumulation is a critical metabolic disorder. However, the quantification of liver fat levels and its associated risk for hypertension incidence remain ambiguous. This project is designed to explore the association between liver fat levels and the risk of hypertension in a healthy population. This cross-sectional study involved 4955 participants from the Health Management Center at Henan Provincial People's Hospital who were surveyed between February 2020 and February 2023. Participants were categorized into four groups based on liver fat quartiles. Subgroup analyses, restricted cubic spline regression models, and logistic regression were utilized to assess the association between liver fat levels and hypertension risk. The relationships between liver fat levels and inflammatory markers were examined using multiple linear regression models. Additionally, a mediation analysis was conducted to explore the role of inflammatory factors in the relationship between liver fat and hypertension risk. Participants with hypertension exhibited greater liver fat levels than did those without hypertension. An increased risk of hypertension was associated with elevated liver fat levels, even after adjusting for other covariates [Q4 vs. Q1 in model II: odds ratio (OR = 1.28), 95% confidence interval (CI) = 1.04-1.59, P = 0.022; P for trend = 0.039]. A nonlinear relationship was observed between liver fat level and hypertension risk, with a notable increase in hypertension risk occurring at liver fat levels greater than 8.65%. Additionally, a positive correlation was found between inflammatory markers and liver fat levels. A mediation effect of 4.76% was noted, linking hypertension risk and liver fat levels through neutrophils. Liver fat levels exceeding 8.65% significantly elevated the risk of hypertension. Inflammatory factors serve as crucial mediators of the relationship between liver fat and hypertension.

Association of triglyceride glucose index and risk of incident hypertension: a prospective cohort study

Objective: To explore the relationship between the triglyceride glucose (TyG) index and the risk of developing hypertension among rural Chinese adults. Methods: A prospective cohort study was conducted from 2007 to 2008, involving 20 194 adults selected through random cluster sampling from a rural community in Luoyang City, Henan Province. Follow-ups were carried out in 2013-2014 and 2018-2020. After excluding participants with hypertension at baseline, those with missing TyG index data, individuals who passed away during follow-up, and those with incomplete hypertension status at the second visit, 9 802 participants were included in the analysis. Baseline and follow-up assessments included questionnaire interviews, physical measurements (including blood pressure), and blood sample collection for fasting lipid and glucose levels. Participants were divided into four groups according to TyG index quartiles, and a modified Poisson regression model was utilized to assess the association between TyG index quartiles and hypertension risk. Results: The study cohort comprised 9 802 participants with a median age of 48 (39, 57) years, including 3 803 males (38.80%). Participants were distributed across TyG index quartiles as follows: TyG<8.2 group (2 224 individuals), TyG 8.2-8.5 group (2 653 individuals), TyG 8.6-8.9 (2 441 individuals), and TyG≥9.0 (2 484 individuals). Over a follow-up period of (11.1±1.3) years, 3 378 subjects developed hypertension, resulting in a cumulative incidence of 34.46% (3 378/9 802). The risk of hypertension increased with higher TyG index quartiles (Ptrend<0.05). Compared to the TyG<8.2, the TyG 8.2-8.5 (RR=1.11, 95%CI 1.01-1.22, P=0.023), TyG 8.6-8.9 (RR=1.16, 95%CI 1.06-1.27, P=0.023), and TyG≥9.0 (RR=1.20, 95%CI 1.10-1.31, P=0.023) exhibited increased hypertension risk after adjusting for age, gender, educational level, and other potential confounders. Subgroup analyses based on gender and age at baseline yielded results consistent with the main analysis. Conclusions: The TyG index is positively correlated with the risk of developing hypertension in the rural adult population.

Major depressive disorder increased the risk of hypertension: A Mendelian randomization study

BackgroundDespite the high prevalence of comorbid hypertension in patients with major depressive disorder (MDD), the relationship between the two diseases has received little attention. Previous observational studies have descripted the association between MDD and hypertension, the causality from MDD on hypertension remained unknown. The present Mendelian randomization (MR) study aimed to assess the causal effect of MDD on hypertension. MethodsA set of genetics instrument was used for analysis, derived from publicly available genetic meta-analysis data. A total of 44 single-nucleotide polymorphisms (SNPs) associated with MDD. The largest genome-wide association study (GWAS) for hypertension (54,358 cases and 408,652 controls) was used to assess the effect of MDD on hypertension. Inverse variance weighted method (IVW), weighted median method (WM), and MR-Egger regression were used for MR analyses. The MR-Egger_intercept test and Cochran's Q statistic were used to determine the pleiotropy and the heterogeneity, respectively. ResultsA total of 28 independent and effective MDD genetic instrumental variables were extracted from the hypertension GWAS summary statistics. Pleiotropy analysis suggested no significant pleiotropic variant among the 28 selected MDD genetic instrument variants in hypertension GWAS datasets. As MDD based on genetic changes increased, the risk of hypertension increased using MR-Egger (OR = 1.004436, 95%CI 0.9884666–1.020663, P = 0.5932928), WM (OR = 1.000499, 95%CI 1.0000188–1.000980, P = 0.0416871), and IVW (OR = 1.000573, 95%CI 1.0000732–1.001074, P = 0.0246392). Our results were robust, with no obvious bias based on investigating the single MDD SNP on hypertension. ConclusionsOur result suggested a causal associated between genetically increased MDD and increased hypertension risk in European population.

Associations between hypertension with reproductive and menopausal factors: An integrated women's health programme (IWHP) study.

Women are less likely to have classic cardiovascular risk factors than men, and events during their reproductive and menopausal years may increase hypertension risk. The aim of this study is to examine woman-specific factors, including menstrual, reproductive and pregnancy complications, in relation to the prevalence of hypertension in mid-life Asian women. This is a cross-sectional study of 1146 healthy women aged 45-69 years, from a multi-ethnic Asian cohort. The women completed an extensive questionnaire that included their sociodemographic details, medical history, lifestyle and physical activity, and reproductive and menopausal history. They also underwent objectively measured physical performance tests and a dual X-ray absorptiometry scan. Hypertension was defined as a systolic BP ≥140 and/or diastolic BP ≥90mm Hg, past diagnosis by a physician, or use of antihypertensive medications. Multivariable logistic regression was used to assess the independent risk factors for hypertension. The average age of the 1146 women analysed was 56.3 (SD 6.2) years, and 55.2 percent of them were hypertensive. The prevalence of gestational diabetes and gestational hypertension was 12.6% and 9.4%, respectively. Besides age, abnormal menstrual cycle length at 25 years of age (OR:2.35, CI:1.34-4.13), preeclampsia (OR:2.46, CI:1.06-5.74), increased visceral adiposity (OR:4.21, CI:2.28-7.79) and reduced physical performance (OR:2.83, CI:1.46-5.47) were independently associated with hypertension in Asian women. Our findings highlight the necessity of including features of menstrual and reproductive history as possible indicators of hypertension risk in cardiovascular disease risk assessment and prevention among Asian women. Reducing visceral adiposity and exercise to improve physical performance may help women avoid developing hypertension.

Association of IL-17 Inhibitors with Hypertension in Patients with Autoimmune Diseases: A Systematic Review and Meta-analysis on Randomized Controlled Trials.

The influence of IL-17 inhibition on blood pressure in autoimmune disease patients remains inconclusive. Our objective is to examine the risk of hypertension in patients with autoimmune diseases undergoing IL-17 inhibition therapies via meta-analysis of randomized, placebo-controlled trials (RCTs). We obtained integrated data from PubMed, Embase, and ClinicalTrials.gov. Incident hypertension rates were calculated, and hazard ratios (HRs) with 95% confidence intervals (CIs) were analyzed, along with Ι^2 statistics to assess heterogeneity. Sequential analysis ensured conclusion reliability. In 30 RCTs involving 9,909 patients with diverse autoimmune diseases treated with anti-IL-17 agents, our meta-analysis revealed a significant increase in hypertension risk (RR 1.69, CI 1.24-2.31, p=0.001), robustly supported by trial sequential analysis. Among the four agents (secukinumab, ixekizumab, bimekizumab, and brodalumab), only secukinumab exhibited a notable association with hypertension. Patients with various primary autoimmune diseases, particularly those with psoriatic arthritis, had a higher likelihood of developing hypertension; in rheumatic arthritis patient cohorts, anti-IL-17 agents did not elevate hypertension risk. Prolonged treatment duration correlated with an increased hypertension risk. Stratifying by gender, studies with a female predominance demonstrated a higher risk ratio for hypertension compared to male-predominant studies. This highlights that anti-IL-17 treatment escalates hypertension risk, emphasizing the need for extra caution when managing autoimmune disease patients. (Registered by PROSPERO, CRD42016053112).

Association of systemic immunity-inflammation index with metabolic syndrome in U.S. adult: a cross-sectional study

BackgroundMetabolic syndrome (MetS) is a pathological condition characterized by the abnormal clustering of several metabolic components and has become a major public health concern. We aim to investigate the potential link of Systemic immunity-inflammation index (SII) on MetS and its components.Methods and resultWeighted multivariable logistic regression was conducted to assess the relationship between SII and MetS and its components. Restricted cubic spline (RCS) model and threshold effect analysis were also performed. A total of 6,999 U.S. adults were enrolled. Multivariate model found that SII were positively associated with MetS (OR = 1.18;95CI%:1.07–1.30) and hypertension (OR = 1.22; 95CI%:1.12–1.34) in a dose-dependent manner. When SII was converted into a categorical variable, the risk of MetS increased by 36% and the risk of hypertension increased by 53% in the highest quantile of SIIs. The RCS model confirmed linear associations between SII and MetS, as well as a non-linear association between SII and certain components of MetS, including hypertension, hyperglycemia, low HDL, and hyperlipidemia. Meanwhile, the relationship between SII and hypertension presents a J-shaped curve with a threshold of 8.27, above which the risk of hypertension increases. Furthermore, in MetS and hypertension, age, sex, body mass index (BMI), and race were not significantly associated with this positive association based on subgroup analyses and interaction tests(p for interaction > 0.05).ConclusionsThe present study indicated that there was a higher SII association with an increased risk of MetS and hypertension in adults. However, further prospective cohort studies are required to establish a causal relationship between SII and MetS, as well as its components.

Periodontitis and hypertension are linked through systemic inflammation: A 5-year longitudinal study.

To investigate the associations between periodontitis and hypertension and potential mediation via systemic inflammation through a 5-year longitudinal study. The severity and extent of periodontitis were determined using probing depth (PD). Oral hygiene was assessed using plaque scores. The associations between periodontal variables and 5-year blood pressure changes or incident hypertension were analysed using linear or Poisson regression, adjusting for potential confounders. Mediation analysis of two systemic inflammatory biomarkers, namely white blood cell count (WBC) and C-reactive protein (CRP) levels, was performed. The study population included 901 hypertension-free participants, aged 50-73 years. Greater mean PD, higher percentage of sites with PD ≥ 6 mm and poor oral hygiene were associated with elevated systolic blood pressure and increased hypertension risk (relative risks = 1.17 [95% confidence interval [CI]: 1.02-1.34], 1.13 [95% CI: 1.02-1.26] and 1.08 [95% CI: 1.03-1.13], respectively). Periodontitis and poor oral hygiene were associated with higher WBC and CRP levels (p < .05), which, in turn, were associated with increased hypertension risk (p < .05). WBC and CRP jointly mediated 14.1%-26.9% of the associations between periodontal variables and incident hypertension. Periodontitis and poor oral hygiene were associated with increased hypertension risk, and systemic inflammation was, in part, a mediator of these associations.

Role of oral health in heart and vascular health: A population-based study.

Conditions such as hypertension, cardiovascular diseases, and hypercholesterolemia, are a major public health challenge. This study investigates the influence of oral health indicators, including gum bleeding, active dental caries, tooth mobility, and tooth loss, on their prevalence in Hungary, considering socioeconomic, demographic, and lifestyle factors. Data from the 2019 Hungarian European Health Interview Survey with 5,603 participants informed this analysis. Data were accessed from the records maintained by the Department of Health Informatics at the University of Debrecen between September and November 2023. Variable selection employed elastic net regularization and k-fold cross-validation, leading to high-performing predictors for weighted multiple logistic regression models. Sensitivity analysis confirmed the findings' validity. Significant links were found between poor oral health and chronic cardiac conditions. Multiple teeth extractions increased hypertension risk (OR = 1.67, 95% CI: [1.01-2.77]); dental prosthetics had an OR of 1.45 [1.20-1.75]. Gum bleeding was associated with higher cardiovascular disease (OR = 1.69 [1.30-2.21]) and hypercholesterolemia risks (OR = 1.40 [1.09-1.81]). Oral health improvement may reduce the risk of cardiac conditions. This underscores oral health's role in multidisciplinary disease management.

Prevalence and associated factors of hypertension in young adults: A cross-sectional study.

Objective: To explore the relationships between hypertension and modifiable risk factors such as daily smoking, sedentary lifestyle and obesity in young adults. Study Design: Cross-sectional study. Setting: Akhtar Saeed Teaching Hospital, Lahore. Period: July 2022 to Dec 2022. Material &amp; Methods: Cross-sectional analysis was conducted on a sample population of 500 individuals, aged 18-39. A standardized, self-administered questionnaire was used to gather information on tobacco usage, physical activity level, parental history of hypertension, and other relevant demographic information. Additional assessments such as dietary habits were conducted through face-to-face interviews. Multivariate logistic regression models were employed to assess the associations between hypertension and various risk factors, controlling for age, gender and BMI categories. Results: The study corroborated the significant association between daily smoking and hypertension (aOR = 1.7, 95% CI 1.3–2.4, p = 0.001) and revealed an 80% increase in hypertension risk associated with a sedentary lifestyle (OR = 1.8, 95% CI 1.2–2.7, χ² = 8.21, p = 0.004). Obesity was also strongly associated with hypertension (aOR = 3.2, 95% CI 2.1–4.8, p &lt; 0.001). There was no significant difference between males and females in terms of hypertension risk. Conclusion: Hypertension is significantly associated with smoking, sedentary lifestyle and obesity.

The Association of Hypertension with Perfluoroalkyl and Polyfluoroalkyl Substances.

Perfluoroalkyl and polyfluoroalkyl substance (PFAS) is a large group of fluorinated synthetic chemicals, e.g., perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), perfluorohexanesulfonic acid (PFHxS), perfluorodecanoic acid (PFDA), and perfluorononanoic acid (PFNA). Many epidemiological studies have found that PFAS exposure is associated with hypertension risk, but others possess a different opinion. Overall, the relationship between PFASs and hypertension risk remains controversial. We sought to conduct a systematic review and meta-analysis to clarify the association between PFAS exposure and human risk of hypertension.We conducted a meta-analysis based on population-involving studies published from 1975 to 2023, which we collected from Web of Science, PubMed, and Embase databases. The odds ratio (OR) and standardized mean difference (SMD), with their 95% confidence interval (CI), were used to assess the risk of hypertension with PFAS exposure. The statistical heterogeneity among studies was assessed with the Q-test and I2 statistics. Research publications related to our meta-analysis topic were systematically reviewed.Fourteen studies involving 71,663 participants, in which 26,281 suffered hypertension, met the inclusion criteria. Our analyses suggest that exposure to general PFAS (OR = 1.09, 95% CI = 1.04-1.14) or PFOS (OR = 1.17, 95% CI = 1.05-1.30) is associated with hypertension risk. Specifically, elevated levels of general PFAS (SMD = 0.25, 95% CI = 0.08-0.42), PFHxS (SMD = 0.17, 95% CI = 0.07-0.27), and PFDA (SMD = 0.08, 95% CI = 0.02-0.13) are associated with a high risk of hypertension.Our meta-analysis indicates that PFAS exposure is a risk factor for hypertension, and increased hypertension risk is associated with higher PFAS levels. Further study may eventually provide a better and more comprehensive elucidation of the potential mechanism of this association.

Sex specific associations between serum uric acid levels and risk of hypertension for different reference values of high blood pressure

Abstract Background Uric acid (UA) has been linked to the development of hypertension. However the sex specific associations between UA levels and different diagnostic blood pressure (BP) references is unknown. Purpose We aimed to ascertain the association between serum UA quartiles, hyperuricemia, and 5-year hypertension incidence and weather lower BP diagnostic references may alter these associations in men and women without cardiometabolic diseases. Methods This 5-year study used the check-up data from a hospital. We excluded participants with hypertension (defined as BP ≥140/90 mmHg in cohort 1 and BP ≥130/80 mmHg in cohort 2), diabetes, dyslipidemia, obesity, estimated glomerular filtration rate (eGFR) &amp;lt;60 ml/min/1.73m², metabolic syndrome, history of gout, and UA lowering medication. We categorized UA into quartiles as follows: men: 1st quartile UA≤4.8 mg/dL, 2nd quartile 4.9-5.6 mg/dL, 3rd quartile 5.7-6.4 mg/dL, and 4th quartile UA≥6.5 mg/dL; women: 1st quartile UA≤3.4 mg/dL, 2nd quartile 3.5-4.0 mg/dL, 3rd quartile 4.1-4.7 mg/dL, and 4th quartile UA≥4.8 mg/dL. Hyperuricemia was defined as UA&amp;gt;7 mg/dL in men and UA&amp;gt;6 mg/dL in women. To analyze the effects of UA on development of hypertension, we adjusted for age, body mass index, systolic BP, diastolic BP, tobacco smoking, alcohol consumption, exercise habit, serum triglyceride, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, fasting plasma glucose, and eGFR by sex in both cohorts. The outcome was 5-year hypertension incidence defined as BP ≥140/90 mmHg in cohort 1 and BP ≥130/80 mmHg in cohort 2. Results In total, 21,514 participants (age, 52.9±10.9 years; men, 39.8%), were enrolled in cohort 1, and 15,316 participants (age, 51.3±10.9 years; men, 36.5%), in cohort 2. The incidence of hypertension in cohort 1 and cohort 2 over a 5-year period was 16.3% and 29.7% in men and 10.9% and 21.4% in women, respectively. Using multivariable logistic regression, we found that when comparing the fourth to first UA quartile, there was an increased risk of hypertension in men in cohort 1, OR 1.36 (95% CI, 1.13-1.63, P&amp;lt;0.01) and cohort 2, OR 1.31 (95% CI, 1.09-1.57, P&amp;lt;0.01) but not in women, cohort 1, OR 1.14 (95% CI, 0.95-1.36, P=0.16) and cohort 2, OR 1.14 (95% CI, 0.98-1.34, P=0.10) respectively. In contrast, for hyperuricemia, we observed increased hypertension risk only in men in cohort 1, OR 1.23 (95% CI, 1.07-1.42, P=0.02) and women were associated with increased risk of hypertension in cohort 2, OR 1.57 (95% CI, 1.14-2.16, P&amp;lt;0.01) but not in men OR 1.15 (95% CI 0.95-1.40, P=0.15). Conclusion Uric acid effect on development of hypertension is affected by sex and incidence differs with the BP reference used. We emphasize on early UA screening to enhance hypertension prevention among cardiometabolic free population.Hypertension 5-Year Incidence Proportion

Salty Subjects: Unpacking Racial Differences in Salt-Sensitive Hypertension.

To review underlying mechanisms and environmental factors that may influence racial disparities in the development of salt-sensitive blood pressure. Our group and others have observed racial differences in diet and hydration, which may influence salt sensitivity. Dietary salt elicits negative alterations to the gut microbiota and immune system, which may increase hypertension risk, but little is known regarding potential racial differences in these physiological responses. Antioxidant supplementation and exercise offset vascular dysfunction following dietary salt, including in Black adults. Furthermore, recent work proposes the role of racial differences in exposure to social determinants of health, and differences in health behaviors that may influence risk of salt sensitivity. Physiological and environmental factors contribute to the mechanisms that manifest in racial differences in salt-sensitive blood pressure. Using this information, additional work is needed to develop strategies that can attenuate racial disparities in salt-sensitive blood pressure.

Mediating effect of body fat percentage in the association between ambient particulate matter exposure and hypertension: a subset analysis of China hypertension survey

BackgroundHypertension caused by air pollution exposure is a growing concern in China. The association between air pollutant exposure and hypertension has been found to be potentiated by obesity, however, little is known about the processes mediating this association. This study investigated the association between fine particulate matter (aerodynamic equivalent diameter ≤ 2.5 microns, PM2.5) exposure and the prevalence of hypertension in a representative population in southern China and tested whether obesity mediated this association.MethodsA total of 14,308 adults from 48 communities/villages in southern China were selected from January 2015 to December 2015 using a stratified multistage random sampling method. Hourly PM2.5 measurements were collected from the China National Environmental Monitoring Centre. Restricted cubic splines were used to analyze the nonlinear dose-response relationship between PM2.5 exposure and hypertension risk. The mediating effect mechanism of obesity on PM2.5-associated hypertension was tested in a causal inference framework following the approach proposed by Imai and Keele.ResultsA total of 20.7% (2966/14,308) of participants in the present study were diagnosed with hypertension. Nonlinear exposure-response analysis revealed that exposure to an annual mean PM2.5 concentration above 41.8 µg/m3 was associated with increased hypertension risk at an incremental gradient. 9.1% of the hypertension burden could be attributed to exposure to elevated annual average concentrations of PM2.5. It is noteworthy that an increased body fat percentage positively mediated 59.3% of the association between PM2.5 exposure and hypertension risk, whereas body mass index mediated 34.3% of this association.ConclusionsThis study suggests that a significant portion of the estimated effect of exposure to PM2.5 on the risk of hypertension appears to be attributed to its effect on alterations in body composition and the development of obesity. These findings could inform intersectoral actions in future studies to protect populations with excessive fine particle exposure from developing hypertension.

Assessing body mass index stages, individual diabetes and hypertension history effects on the risk of developing hypertension among Ghanaians: A cross-sectional study.

This study aimed to understand the relationship between body mass index (BMI),diabetes and hypertension history, and other risk of hypertension among Ghanaians. The BMI data are categorized according to the World Health Organization (WHO) definition. The data were obtained from the WHO Study on global AGEing and adult health (WHO SAGE) Ghana Wave 2. Descriptive statistics were used to summarize the variables, and the association between these variables and hypertension was assessed using the χ². Multivariable logistic regression was used to examine the relationship between hypertension and different BMI levels and other variables. Obesity class II individuals have about a 4-fold higher risk of developing hypertension compared to underweight individuals. Obesity class III, class I, and preobesity individuals have approximately a 3-fold higher risk. Normal weight is associated with increased hypertension risk. Both males and females show a significant increase in hypertension risk across all BMI categories. History of hypertension is linked to a 2.2-fold increased risk. Diabetes history is associated with hypertension when considering other factors. Elevated hypertension risk is observed among married, divorced, and widowed males then never married males. Only widowed females showed an increased risk. Older age significantly increases hypertension risk, particularly in females. Vegetable servings reduce hypertension risk, while fruit servings are associated with an increased risk. Vigorous exercise increases hypertension risk, particularly in females. Regular check-ups are recommended for married, divorced, and widowed males, focusing on blood pressure (BP) levels. Regular exercise from young age helps lower BP in later years. Individuals with a history of hypertension should follow BP control measures. Encouraging the consumption of the right combination of vegetables and fruits can help lower BP. Female tobacco smoking should be strongly discouraged due to a 54% increased risk of developing hypertension.

Interactions of arsenic exposure, arsenic metabolism with red blood cell folate on the risk of hypertension: NHANES 2007-2016.

Arsenic exposure was associated with hypertension, and arsenic metabolism might be influenced by folate concentrations. Thus, this study aimed to explore the interaction between arsenic exposure and metabolism with folate concentrations on hypertension. We studied 6643 adults aged 20 years and older who participated in the National Health and Nutrition Examination Survey from 2007 through 2016. Urinary total arsenic (UTAs), the percentage of urinary dimethylarsinic acid (DMA%), serum and red blood cell (RBC) folate were collected. Logistic regression and restricted cubic spline (RCS) analyses were performed to determine the association and dose-response relationship. Interaction analyses were conducted on both additive and multiplicative scales. UTAs (median: 7.05μg/L) was positively associated with hypertension risk, and the adjusted OR was 1.44 (95% CI: 1.06-1.95) when comparing the third with the lowest quartile. And participants with the highest quintile of RBC folate had increased hypertension risk than those with the lowest quintile (adjusted OR=1.43, 95% CI: 1.06-1.94). Significant additive interaction was observed between excessive RBC folate with high UTAs (AP=0.323, 95% CI: 0.083-0.564) and low DMA% (AP=0.381, 95% CI: 0.119-0.643) on hypertension risk. Our results suggested significant interactions between high UTAs and low DMA% with excessive RBC folate on hypertension risk.

Association between hemoglobin concentration and hypertension risk in native Tibetans at high altitude.

Previous studies examining the association between hemoglobin concentration and hypertension have yielded inconsistent results. There is still a lack of evidence regarding the association between hemoglobin concentration and hypertension risk in native Tibetans at high altitude. We performed this cross-sectional study in Luhuo County of Ganzi Tibetan Autonomous Prefecture (average altitude of 3500m). In this study, we enrolled 1547 native Tibetans. The association between hemoglobin concentration and hypertension risk was examined by multivariate binary logistic regression and smooth curve fitting. Native Tibetans with hypertension had significantly higher hemoglobin concentrations than those without hypertension (165.9±21.5g/L vs. 157.7±19.2g/L, P<0.001). An increase in hemoglobin concentration of 1g/L was associated with hypertension (odds ratio [OR] 1.02, 95% confidence interval [CI] 1.01-1.02) after confounder adjustment. The highest hemoglobin concentration group (exceeding 173g/L) was associated with an increased hypertension risk compared with the bottom quartile of hemoglobin concentration (OR 2.39, 95% CI 1.48-3.85). Hemoglobin concentration (per 1g/L change) exceeding 176g/L was significantly associated with an increased hypertension risk (OR 1.04, 95% CI 1.03-1.06). Additionally, high-altitude polycythemia significantly increased the hypertension risk compared with a normal hemoglobin concentration (OR 2.92, 95% CI 1.25-6.86). A similar result was observed for mild polycythemia (OR 1.74, 95% CI 1.29-2.34). In conclusion, hemoglobin concentration was associated with hypertension risk in native Tibetans. When the hemoglobin concentration exceeded a certain value (approximately 176g/L), the risk of hypertension was significantly increased.

Abstract P186: CCR10 Promotes Blood Pressure Elevations And Renal Damage In A Mouse Model Of Hypertension

Emerging evidence suggests inflammation plays a key role in hypertension and its associatedend-organ damage. Regulatory T cells (Tregs) function primarily by limiting inflammation andare considered protective in the pathogenesis of hypertension. However, Tregs also havetissue-specific functions and have been found to play pathogenic roles in some chronicdiseases by limiting angiogenesis. As such, the role of Tregs and its subsets in chronichypertension remains unclear. Recently, we identified CCR10 + Tregs as an immune populationselectively decreased in the circulation of hypertensive patients. CCR10 is a chemokinereceptor important for recruitment of immune cells to the skin. Although skin has not been wellstudied in hypertension, prior reports in humans demonstrate that loss of skin microvessels(microvascular rarefaction) occurs as a putative mechanism by which blood pressure (BP) isincreased. Thus, we hypothesized that CCR10 + Tregs promote hypertension through skininfiltration leading to enhanced microvascular rarefaction. Herein, we demonstrate that,compared to normotensive controls, mice with Angiotensin II (Ang II)-induced hypertension haveincreased abundance of CCR10 + Tregs in the skin (p=0.0004) with a corresponding decrease incirculation (p=0.003). These mice also displayed increased cutaneous levels of CCL27(p=0.0007), a ligand for CCR10. Among circulating lymphocytes in normotensive mice, wefound that Tregs express the highest frequency of CCR10 (p=0.0007). Importantly, wedemonstrate that CCR10-deficient mice (CCR10 -/- ) are more resistant to Ang II-induced systolicblood pressure elevations (p=0.004) and albuminuria (p=0.01) compared to wild type mice.CCR10 -/- mice also exhibit higher levels of cutaneous arteriolar density (p=0.02) and VEGFA(p=0.009), consistent with reduced skin microvascular rarefaction. Finally, using PrediXcan, wedemonstrate that higher genetically predicted levels of CCR10 are associated with increasedrisk of hypertension in humans. Taken together, our data suggest that CCR10 promotes Ang II-induced BP elevations and renal damage in mice, at least in part by promoting Treg recruitmentto the skin leading to microvascular rarefaction.

Abstract P146: Environmental Exposures And The Development Of Hypertension In A Prospective US Based Cohort Of Women

Environmental exposures including noise and air pollution have been linked to increased hypertension risk, whereas greenspace exposure may decrease hypertension risk. Previous studies have primarily focused on the impact of individual environmental exposures. However, people are exposed to multiple correlated environmental factors simultaneously. We aimed to assess the associations between exposure to multiple environmental exposures and hypertension development in the US-based prospective Nurses’ Health Study II (NHSII). We followed 106,409 participants in NHSII from the enrolment (1989) to the diagnosis of hypertension, death, or end of follow-up (2017), whichever came first. We appended multiple environmental factors including air pollution, noise, light at night, temperature, and greenspace at participants’ residential addresses histories (updated every two years). We calculated 24-month average exposure and cumulative average exposure for each exposure. We applied time-varying Cox proportional hazards models, adjusting for potential confounders including age, race, lifestyle factors, and individual- and area-level socioeconomic status to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) for incident hypertension. We observed 35,155 incidents of hypertension during a follow-up period of 1,947,929 person-years. The average age of the study participants during the follow-up was 45.5 ± 9.3 years. Single exposure models demonstrated positive associations with air pollution, noise, summer maximum temperature, and a negative association with greenness (Table 1).

Lowering of Circulating Sclerostin May Increase Risk of Atherosclerosis and Its Risk Factors: Evidence From a Genome-Wide Association Meta-Analysis Followed by Mendelian Randomization.

In this study, we aimed to establish the causal effects of lowering sclerostin, target of the antiosteoporosis drug romosozumab, on atherosclerosis and its risk factors. A genome-wide association study meta-analysis was performed of circulating sclerostin levels in 33,961 European individuals. Mendelian randomization (MR) was used to predict the causal effects of sclerostin lowering on 15 atherosclerosis-related diseases and risk factors. We found that 18 conditionally independent variants were associated with circulating sclerostin. Of these, 1 cis signal in SOST and 3 trans signals in B4GALNT3, RIN3, and SERPINA1 regions showed directionally opposite signals for sclerostin levels and estimated bone mineral density. Variants with these 4 regions were selected as genetic instruments. MR using 5 correlated cis-SNPs suggested that lower sclerostin increased the risk of type 2 diabetes mellitus (DM) (odds ratio [OR] 1.32 [95% confidence interval (95% CI) 1.03-1.69]) and myocardial infarction (MI) (OR 1.35 [95% CI 1.01-1.79]); sclerostin lowering was also suggested to increase the extent of coronary artery calcification (CAC) (β=0.24 [95% CI 0.02-0.45]). MR using both cis and trans instruments suggested that lower sclerostin increased hypertension risk (OR 1.09 [95% CI 1.04-1.15]), but otherwise had attenuated effects. This study provides genetic evidence to suggest that lower levels of sclerostin may increase the risk of hypertension, type 2 DM, MI, and the extent of CAC. Taken together, these findings underscore the requirement for strategies to mitigate potential adverse effects of romosozumab treatment on atherosclerosis and its related risk factors.

Relationship between nocturia and hypertension: findings from the NHANES 2005-2016.

The objective of this study was to explore the association between nocturia and hypertension in a large, nationally representative adult sample. We used data from 2005 to 2016 National Health and Nutritional Examination Surveys (NHANES). A total of 29,505 participants aged 20 years old or older were included. A participant was considered to have nocturia if he or she had two or more voiding episodes at night. Multivariable logistic regression models were used to explore the association between nocturia and hypertension. Participants with nocturia were associated with a higher risk of hypertension (OR, 1.36; 95% CI, 1.28-1.45). Interaction tests revealed no significant effect of sex, age, race, or body mass index on the association of nocturia with hypertension. As the severity of nocturia increases, the risk of hypertension increases (P for trend <0.0001). In addition, nocturia was also related to different grades of hypertension (II vs. I: OR, 1.34, 95% CI, 1.16-1.55; III vs. I: OR, 1.67, 95% CI, 1.32-2.13). In this cross-sectional study, our results suggest that nocturia is associated with an increased risk for hypertension.