1
|
Tao Z, Qu Q, Li J, Li X. Factors influencing blood pressure variability in postmenopausal women: evidence from the China Health and Nutrition Survey. Clin Exp Hypertens 2023; 45:2181356. [PMID: 36842972 DOI: 10.1080/10641963.2023.2181356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
BACKGROUND The aim is to identify the factors influencing blood pressure variability in postmenopausal women based on the China Health and Nutrition Survey (CHNS). MATERIAL AND METHODS The data on postmenopausal women between 1993 and 2015 were extracted from the CHNS. Group-based trajectory modeling was used to analyze the development track of blood pressure changes, based on which the subjects were separately divided into two groups for systolic blood pressure (SBP) and diastolic blood pressure (DBP). Univariate and multivariate analyzes were performed to analyze the factors influencing SBP and DBP. RESULTS A total of 346 women were eligible for the study. Group-based trajectory modeling showed two different trajectories of blood pressure, including the low-level, slowly developed type and the high-level, rapidly developed, stable type of SBP, as well as the low-level, slowly developed type and the high-level, slowly developed type of DBP. In multivariate analysis, age (odds ratio [OR]: 1.118, 95% confidence interval [CI]: 1.082-1.156), body mass index (BMI) (OR: 2.239, 95%CI: 1.010-4.964), antihypertensive agents (OR: 7.293, 95%CI: 2.191-24.275), hip circumference (OR: 1.069, 95%CI: 1.014-1.128) and marital status (OR: 3.103, 95%CI: 1.028-9.361) were found to be the significant factors influencing SBP; age (OR: 1.067, 95%CI: 1.039-1.096), alcohol consumption (OR: 2.741, 95%CI: 1.169-6.429), antihypertensive agents (OR: 4.577, 95%CI: 1.553-13.492), hip circumference (OR: 1.093, 95%CI: 1.049-1.138), and marital status (OR: 3.615, 95%CI: 1.228-10.644) were the predominant factors influencing DBP. CONCLUSIONS In postmenopausal women, age, BMI, antihypertensive agents, hip circumference, and marital status are associated with SBP changes, while age, alcohol consumption, antihypertensive agents, hip circumference, and marital status with DBP variability. MESH KEYWORDS postmenopausal women, blood pressure, development track, influencing factors, CHNS.
Collapse
Affiliation(s)
- Zhonge Tao
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, P.R. China
| | - Quanxin Qu
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, P.R. China
| | - Jing Li
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, P.R. China
| | - Xiaolin Li
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, P.R. China
| |
Collapse
|
2
|
Hamaoka T, Leuenberger UA, Blaha C, Luck JC, Sinoway LI, Cui J. Baroreflex responses to limb venous distension in humans. Am J Physiol Regul Integr Comp Physiol 2022; 323:R267-R276. [PMID: 35726869 PMCID: PMC9359652 DOI: 10.1152/ajpregu.00028.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The venous distension reflex (VDR) is a pressor response evoked by peripheral venous distension and accompanied by increased muscle sympathetic nerve activity (MSNA). The effects of venous distension on the baroreflex, an important modulator of blood pressure (BP), has not been examined. The purpose of this study was to examine the effect of the VDR on baroreflex sensitivity (BRS). We hypothesized that the VDR will increase the sympathetic BRS (SBRS). Beat-by-beat heart rate (HR), BP and MSNA were recorded in 16 female and 19 male young healthy subjects. To induce venous distension, normal saline equivalent to 5% of the forearm volume was infused into the veins of the occluded forearm. SBRS was assessed from the relationship between diastolic BP and MSNA during spontaneous BP variations. Cardiovagal BRS (CBRS) was assessed with the sequence technique. Venous distension evoked significant increases in BP and MSNA. Compared to baseline, during the maximal VDR response period, SBRS was significantly increased (-3.1 ± 1.5 to -4.5 ± 1.6 bursts・100 heartbeat-1・mmHg-1, P < 0.01) and CBRS was significantly decreased (16.6 ± 5.4 to 13.8 ± 6.1 ms・mmHg-1, P < 0.01). No sex differences were observed in the effect of the VDR on SBRS or CBRS. These results indicate that in addition to its pressor effect, the VDR altered both SBRS and CBRS. We speculate that these changes in baroreflex function contribute to the modulation of MSNA and BP during limb venous distension.
Collapse
Affiliation(s)
- Takuto Hamaoka
- Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Urs A Leuenberger
- Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Cheryl Blaha
- Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Jonathan Carter Luck
- Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Lawrence I Sinoway
- Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Jian Cui
- Penn State Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, PA, United States
| |
Collapse
|
3
|
Cardioprotective effects of severe calorie restriction from birth in adult ovariectomized rats. Life Sci 2021; 275:119411. [PMID: 33774029 DOI: 10.1016/j.lfs.2021.119411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 02/08/2023]
Abstract
AIMS Menopause is a female condition induced by a reduction of ovarian hormone and is related to an increase in cardiovascular diseases in women. We have shown that severe calorie restriction (SCR) from birth reduces the cardiometabolic risk in adult male Wistar rats. In this study, we investigated the effects of SCR from birth to adulthood on cardiovascular function of ovariectomized rats. MAIN METHODS From birth to adulthood, rats were daily fed ad libitum (control group - C) or with 50% of the amount consumed by the control group (calorie-restricted group - R). At 90 days, half of the rats in each group underwent bilateral ovariectomy (OVX), totaling 4 groups: C-Sham, C-OVX, R-Sham, R-OVX. Systolic blood pressure (SBP), heart rate (HR) and, double product (DP) index were recorded by tail-cuff plethysmography. Cardiac function was analyzed by the Langendorff technique and cardiomyocyte diameter was accessed by histologic analysis. Additionally, cardiac SERCA2 content and redox status were evaluated. KEY FINDINGS C-OVX rats exhibited reduced cardiac function and cardiac non-enzymatic total antioxidant capacity (TAC). R-Sham animals showed reduced SBP, DP, HR, improved cardiac function, reduced cardiac protein carbonyl derivatives and increased TAC, catalase, and superoxide dismutase activities. R-OVX rats maintained reduced SBP, DP, HR, and increased contractility and relaxation indexes. R-Sham and R-OVX rats exhibited preserved heart mass and reduced cardiomyocyte diameter. Cardiac SERCA2 content did not differ between the groups. SIGNIFICANCE Taken together, our findings show cardioprotective effects of SCR from birth in adult ovariectomized rats.
Collapse
|
4
|
Justina VD, Giachini FR, Sullivan JC, Webb RC. Toll-Like Receptors Contribute to Sex Differences in Blood Pressure Regulation. J Cardiovasc Pharmacol 2020; 76:255-266. [PMID: 32902942 PMCID: PMC7751064 DOI: 10.1097/fjc.0000000000000869] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Toll-like receptors (TLRs) play an important role in the innate immune system, and recently, they have been shown to be involved in the regulation of blood pressure. The incidence of hypertension is higher in men, and it increases in postmenopausal women. In fact, premenopausal women are protected from cardiovascular disease compared with age-matched men, and it is well established that this protective effect is lost with menopause. However, the molecular mechanisms underlying this protection in women are unknown. Whether or not it could be related to differential activation of the innate immune system remains to be elucidated. This review focuses on (1) the differences between men and women in TLR activation and (2) whether TLR activation may influence the regulation of blood pressure in a sex-dependent manner.
Collapse
Affiliation(s)
- Vanessa Dela Justina
- Graduate Program in Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Fernanda R. Giachini
- Graduate Program in Biological Sciences, Federal University of Goiás, Goiânia, Brazil
- Institute of Health Sciences and Health, Universidad Federal De Mato Grosso, Barra Do Garcas, Brazil
| | - Jennifer C. Sullivan
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA
| | - R. Clinton Webb
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA
| |
Collapse
|
5
|
da Silva Dias D, Moraes-Silva IC, Bernardes N, de Oliveira Brito-Monzani J, Stoyell-Conti FF, Machi JF, Llesuy S, Irigoyen MC, De Angelis K. Exercise training initiated at old stage of lifespan attenuates aging-and ovariectomy-induced cardiac and renal oxidative stress: Role of baroreflex. Exp Gerontol 2019; 124:110635. [PMID: 31195102 DOI: 10.1016/j.exger.2019.110635] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/24/2019] [Accepted: 06/09/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND The association of aging and menopause is a potent risk factor for cardiometabolic disease. We studied the impact of aerobic exercise training (ET) initiated in the old stage of lifespan in hemodynamics, metabolic, autonomic and oxidative stress. METHODS Aged (18 months old) female Wistar rats were divided into: ovariectomized and untrained (AG-OVX), and ovariectomized and trained (AG-OVXt, ET for 8 weeks). Intact aged (AG) and young female rats (3 months old; Y) were also studied. Blood pressure and metabolic parameters were measured. Baroreflex sensitivity (BRS) was studied by bradycardic (BR) and tachycardic (TR) responses to vasoactive drugs. Cardiac and renal lipid peroxidation (LPO), catalase (CAT), superoxide dismutase (SOD) and gluthatione peroxidase (GPx), and gluthatione redox balance (GSH/GSSG) were analyzed. RESULTS AG-OVXt group increased aerobic performance in 35%, decreased adipose tissue and triglycerides in 36% and 27%, respectively, and improved insulin tolerance in 50% in comparison to AG-OVX. AG-OVX presented hypertensive levels of blood pressure (systolic: 155 ± 5, diastolic: 111 ± 3 mmHg). In contrast, AG-OVXt presented blood pressure values similar to Y rats (systolic: 129 ± 3, diastolic: 112 ± 3 mmHg). TR and BR were reduced by 70% and 46%, respectively, in AG-OVX vs. Y. Once more, AG-OVXt presented similar results to Y. ET decreased LPO in the heart and kidney. In the latter, renal CAT and SOD were corrected by ET, while cardiac redox balance was partially recovered. Improved BRS was correlated with improved oxidative stress markers. CONCLUSIONS Even when initiated after aging and ovariectomy deleterious effects, ET is able to normalize BRS and highly improve cardiac and renal oxidative stress.
Collapse
Affiliation(s)
- Danielle da Silva Dias
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil; Department of Physiology, Federal University of São Paulo, São Paulo, Brazil
| | - Ivana C Moraes-Silva
- Hypertension Unit, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Nathalia Bernardes
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Janaina de Oliveira Brito-Monzani
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil; Federal University of Maranhão, São Luís, Brazil
| | - Filipe Fernandes Stoyell-Conti
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil; College of Pharmacy, Nova Southeastern University, Florida, USA
| | - Jacqueline Freire Machi
- Hypertension Unit, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil; Department of Molecular and Cellular Pharmacology, University of Miami, Florida, USA
| | - Susana Llesuy
- Department of General and Inorganic Chemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Maria-Claudia Irigoyen
- Hypertension Unit, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Kátia De Angelis
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil; Department of Physiology, Federal University of São Paulo, São Paulo, Brazil.
| |
Collapse
|
6
|
Reyes LM, Usselman CW, Skow RJ, Charkoudian N, Staab JS, Davenport MH, Steinback CD. Sympathetic neurovascular regulation during pregnancy: A longitudinal case series study. Exp Physiol 2018; 103:318-323. [PMID: 29336094 DOI: 10.1113/ep086771] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/09/2018] [Indexed: 01/26/2023]
Abstract
NEW FINDINGS What is the main observation in this case? The main observation of this case report is that during pregnancy there is a progressive sympatho-excitation in basal conditions and under stress, which is offset by a concurrent reduction in neurovascular transduction. Strong correlations between autonomic nervous system activity and sex hormones (oestrogen and progesterone), vasopressin and aldosterone were found. What insights does it reveal? Our findings suggest that hormonal surges might be associated with central sympathetic activation. ABSTRACT The adaptations of sympathetic nerve activity (SNA) during pregnancy remain poorly understood. An increase in blood volume, cardiac output and SNA, with a concomitant drop in total peripheral resistance (TPR), suggest that during pregnancy there is a reduced transduction of SNA into TPR. Most of these findings have originated from cross-sectional studies; thus, we conducted a longitudinal assessment of SNA and TPR in two participants. Measurements were made before pregnancy (early follicular phase), on four occasions during pregnancy and at 2 months postpartum. Mean arterial pressure and cardiac output were used to calculate TPR. The SNA was measured using microneurography (peroneal nerve). There was a gestation-dependent increase in SNA burst frequency (r2 = 0.96, P = 0.009). Neurovascular transduction, however, decreased by 53% in both women. Sympathetic hyperactivity was reversed postpartum, whereas neurovascular transduction remained lower. These longitudinal data highlight the progressive sympatho-excitation of pregnancy, which is offset by a concurrent reduction in neurovascular transduction.
Collapse
Affiliation(s)
- Laura M Reyes
- Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, AB, Canada.,Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada
| | - Charlotte W Usselman
- Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, AB, Canada.,Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada
| | - Rachel J Skow
- Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, AB, Canada.,Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada
| | - Nisha Charkoudian
- US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Jeffery S Staab
- US Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Margie H Davenport
- Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, AB, Canada.,Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada
| | - Craig D Steinback
- Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, AB, Canada.,Physical Activity and Diabetes Laboratory, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
7
|
Barnes JN. Sex-specific factors regulating pressure and flow. Exp Physiol 2017; 102:1385-1392. [PMID: 28799254 DOI: 10.1113/ep086531] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 08/10/2017] [Indexed: 12/14/2022]
Abstract
NEW FINDINGS What is the topic of this review? There are sex- and sex-hormone-specific differences in autonomic control of blood pressure, central haemodynamics and cerebral blood flow. What advances does it highlight? Sex differences in autonomic control of blood pressure may underlie other sex-specific characteristics associated with cerebral blood flow, which can, in turn, affect tissue function. Over the last decade, there have been many published reports on sex differences in blood pressure regulation between young men and young women. The autonomic nervous system is a primary contributor to both acute and long-term blood pressure regulation. Sex differences in blood pressure regulation are likely to have effects that extend beyond mean arterial pressure and that can affect blood flow and tissue function. This short review includes recent literature from our laboratory focusing on autonomic control of the circulation, specifically age- and sex-hormone-related differences in central haemodynamics and cerebral blood flow, and discusses potential clinical implications.
Collapse
Affiliation(s)
- Jill N Barnes
- Bruno Balke Biodynamics Laboratory, Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, 53706, USA
| |
Collapse
|
8
|
Influence of sex, menstrual cycle, and oral contraceptives on the cerebrovascular response to paced deep breathing. Clin Auton Res 2017; 27:411-415. [PMID: 28766085 DOI: 10.1007/s10286-017-0455-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/20/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE Deep breathing assesses autonomic function; however, many researchers/clinicians do not account for hyperventilation, brain blood flow or blood pressure. METHODS Men and women (with/without oral contraceptives) participated. women participated during low and high hormone phases of the menstrual cycle. Blood pressure, end-tidal carbon dioxide, middle cerebral artery velocity and cerebrovascular resistance were assessed. RESULTS Deep breathing decreased end-tidal carbon dioxide and middle cerebral artery velocity while increasing cerebrovascular resistance in all participants; blood pressure decreased in men. There were no influences of menstrual cycle or oral contraceptives. CONCLUSIONS Men have different autonomic responses to deep breathing compared to women.
Collapse
|
9
|
Hissen SL, El Sayed K, Macefield VG, Brown R, Taylor CE. Muscle sympathetic nerve activity peaks in the first trimester in healthy pregnancy: a longitudinal case study. Clin Auton Res 2017; 27:401-406. [DOI: 10.1007/s10286-017-0439-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/16/2017] [Indexed: 11/29/2022]
|
10
|
Autonomic control of body temperature and blood pressure: influences of female sex hormones. Clin Auton Res 2017; 27:149-155. [DOI: 10.1007/s10286-017-0420-z] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/10/2017] [Indexed: 12/26/2022]
|