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Gump BB, Hill DT, Robinson M, Kannan K, Heffernan K, Atallah-Yunes NH, Brann L, Parsons PJ, Palmer CD, MacKenzie JA, Goodrich JM, Bendinskas K. Perfluoroalkyl substances (PFAS) and lead (Pb) as "cardiovascular disruptors" in 9-11-year-old children living in Syracuse, New York, United States. ENVIRONMENTAL RESEARCH 2023; 236:116758. [PMID: 37532213 DOI: 10.1016/j.envres.2023.116758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/04/2023]
Abstract
OBJECTIVE Per- and polyfluoro-alkyl substances (PFAS) and lead (Pb) are ubiquitous environmental toxicants with apparent impact on cardiovascular disease (CVD) risk. As one possible mechanism for this increased risk, we have previously demonstrated an association between Pb exposure and heightened cardiovascular reactivity to acute psychological stress, a CVD risk factor. The present study expands this approach and considers both PFAS and Pb exposures (and the possible interaction). METHODS We assessed 14 serum PFAS and whole blood Pb concentrations in a sample of 9-11 year-old children (N = 291; 43.2% White, 56.8% Black; 53.5% female). We measured cardiovascular functioning at rest and during psychological stress as well as multiple indicators of subclinical CVD including resting blood pressure (BP), carotid-femoral pulse wave velocity (cfPWV), carotid intima-media thickness (cIMT), and left ventricular mass (LVM). Data analysis included general linear modeling as well as a non-parametric approach to study metal mixtures, specifically Bayesian Kernel Machine Regression (BKMR). RESULTS Significant interactions between different PFAS and with Pb suggest the importance of considering toxicant mixtures when assessing potential disruption of the cardiovascular system. The pattern of findings suggests that greater "vascular reactivity" (elevated BP and vascular resistance during acute psychological stress) was associated with higher concentrations of perfluorononanoic acid (PFNA), perfluorohexane sulfonate (PFHxS), and Pb, but only when perfluorooctanoic acid (PFOA) was concurrently elevated. With respect to subclinical outcomes, increasing perfluorodecanoic acid (PFDA) was associated with greater cIMT (β = 0.21, p = 0.010). CONCLUSION To our knowledge this is the first study to consider how PFAS exposures might affect cardiovascular functioning and subclinical disease. Although a complex pattern of associations emerged, it does appear that PFAS and Pb can be classified as "cardiovascular disruptors" in children. Further research is needed to replicate these novel findings and determine whether these disruptions produce future cardiovascular disease.
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Affiliation(s)
- Brooks B Gump
- Department of Public Health, Syracuse University, United States.
| | - Dustin T Hill
- Department of Public Health, Syracuse University, United States
| | - Morgan Robinson
- Wadsworth Center, New York State Department of Health, Albany, NY, United States
| | | | - Kevin Heffernan
- Department of Exercise Science, Syracuse University, United States
| | | | - Lynn Brann
- Department of Nutrition and Food Studies, Syracuse University, United States
| | - Patrick J Parsons
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, United States; Department of Environmental Health Sciences, School of Public Health, The University at Albany, United States
| | - Christopher D Palmer
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, United States; Department of Environmental Health Sciences, School of Public Health, The University at Albany, United States
| | - James A MacKenzie
- Department of Biological Sciences, State University of New York College at Oswego, United States
| | - Jackie M Goodrich
- Department of Environmental Health Sciences, University of Michigan, United States
| | - Kestutis Bendinskas
- Department of Chemistry, State University of New York College at Oswego, United States
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Ginty AT, Tyra AT, Young DA, Brindle RC, de Rooij SR, Williams SE. Cardiovascular reactions to acute psychological stress and academic achievement. Psychophysiology 2022; 59:e14064. [PMID: 35353904 PMCID: PMC9541813 DOI: 10.1111/psyp.14064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 01/12/2022] [Accepted: 03/09/2022] [Indexed: 11/30/2022]
Abstract
Cardiovascular reactions to acute psychological stress have been associated with cognitive function. However, previous work has assessed cardiovascular reactions and cognitive function in the laboratory at the same time. The present study examined the association between cardiovascular reactions to acute psychological stress in the laboratory and academic performance in final year high school students. Heart rate, blood pressure, stroke volume, and cardiac output reactions to an acute psychological stress task were measured in 131 participants during their final year of high school. Performance on high school A‐levels were obtained the following year. Higher heart rate and cardiac output reactivity were associated with better A‐level performance. These associations were still statistically significant after adjusting for a wide range of potentially confounding variables. The present results are consistent with a body of literature suggesting that higher heart rate reactions to acute psychological stress are associated with better cognitive performance across a variety of domains. The present study is the first to examine the associations between cardiovascular reactions to stress in the laboratory and academic achievement. Additionally, it is the first to examine a more comprehensive hemodynamic profile of cardiovascular reactivity (e.g., cardiac output) with cognitive function. The present results are consistent with a body of literature suggesting that higher heart rate reactions to acute psychological stress are associated with better cognitive performance across a variety of domains.
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Affiliation(s)
- Annie T Ginty
- Department of Psychology and Neuroscience, Baylor University, Waco, Texas, USA
| | - Alexandra T Tyra
- Department of Psychology and Neuroscience, Baylor University, Waco, Texas, USA
| | - Danielle A Young
- Department of Psychology and Neuroscience, Baylor University, Waco, Texas, USA
| | - Ryan C Brindle
- Department of Cognitive and Behavioral Science & Neuroscience Program, Washington and Lee University, Lexington, Virginia, USA
| | - Susanne R de Rooij
- Department of Epidemiology and Data Science, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Sarah E Williams
- School of Sport, Exercise, and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
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Brindle RC, Pearson A, Ginty AT. Adverse childhood experiences (ACEs) relate to blunted cardiovascular and cortisol reactivity to acute laboratory stress: A systematic review and meta-analysis. Neurosci Biobehav Rev 2022; 134:104530. [PMID: 35031343 DOI: 10.1016/j.neubiorev.2022.104530] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/08/2021] [Accepted: 01/09/2022] [Indexed: 12/24/2022]
Abstract
Adverse childhood experiences (ACEs) are associated with poor future mental and physical health. Altered biological reactivity to mental stress may be a possible mechanism linking ACEs to poor health. However, it is not clear if ACEs relate to blunted or exaggerated stress reactivity. This meta-analysis aimed to determine whether exposure to ACEs is associated with cardiovascular and cortisol stress reactivity. A systematic review yielded 37 sources. Random-effects modelling tested the aggregate effects of 83 studies of the association between ACEs and stress reactivity. Exposure to ACEs was associated with relatively blunted cardiovascular and cortisol stress reactivity. Effect sizes did not vary as a function of sample sex or reactivity measure (e.g., heart rate, blood pressure, or cortisol). Meta-regression revealed preliminary evidence of greater blunting in samples of a younger age and samples reporting greater ACE exposure. Subgroup analyses for stress task, ACE measurement instrument, and sample race were not conducted because of a lack of between-study variability. Exposure to ACEs is associated with dysregulation of multiple components of the human stress response system.
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Affiliation(s)
- Ryan C Brindle
- Department of Cognitive and Behavioral Science, Washington and Lee University, Lexington, VA, United States; Neuroscience Program, Washington and Lee University, Lexington, VA, United States.
| | - Alexandra Pearson
- Department of Cognitive and Behavioral Science, Washington and Lee University, Lexington, VA, United States
| | - Annie T Ginty
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, United States
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Ginty AT, Tyra AT, Young DA, John-Henderson NA, Gallagher S, Tsang JAC. State gratitude is associated with lower cardiovascular responses to acute psychological stress: A replication and extension. Int J Psychophysiol 2020; 158:238-247. [DOI: 10.1016/j.ijpsycho.2020.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 10/04/2020] [Accepted: 10/06/2020] [Indexed: 01/23/2023]
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Psychological stress reactivity and future health and disease outcomes: A systematic review of prospective evidence. Psychoneuroendocrinology 2020; 114:104599. [PMID: 32045797 DOI: 10.1016/j.psyneuen.2020.104599] [Citation(s) in RCA: 220] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/19/2019] [Accepted: 01/29/2020] [Indexed: 11/20/2022]
Abstract
BACKGROUND Acute psychological stress activates the sympatho-adrenal medullary (SAM) system and hypothalamo-pituitary adrenal (HPA) axis. The relevance of this stress reactivity to long-term health and disease outcomes is of great importance. We examined prospective studies in apparently healthy adults to test the hypothesis that the magnitude of the response to acute psychological stress in healthy adults is related to future health and disease outcomes. METHODS We searched Medline Complete, PsycINFO, CINAHL Complete and Embase up to 15 Aug 2019. Included studies were peer-reviewed, English-language, prospective studies in apparently healthy adults. The exposure was acute psychological stress reactivity (SAM system or HPA axis) at baseline. The outcome was any health or disease outcome at follow-up after ≥1 year. RESULTS We identified 1719 papers through database searching and 1 additional paper through other sources. Forty-seven papers met our criteria including 32,866 participants (range 30-4100) with 1-23 years of follow-up. Overall, one third (32 %; 83/263) of all reported findings were significant and two thirds (68 %; 180/263) were null. With regard to the significant findings, both exaggerated (i.e. high) and blunted (i.e. low) stress reactivity of both the SAM system and the HPA axis at baseline were related to health and disease outcomes at follow-up. Exaggerated stress reactivity at baseline predicted an increase in risk factors for cardiovascular disease and decreased telomere length at follow-up. In contrast, blunted stress reactivity predicted future increased adiposity and obesity, more depression, anxiety and PTSD symptoms, greater illness frequency, musculoskeletal pain and regulatory T-Cell percentage, poorer cognitive ability, poorer self-reported health and physical disability and lower bone mass. CONCLUSION Exaggerated and blunted SAM system and HPA axis stress reactivity predicted distinct physical and mental health and disease outcomes over time. Results from prospective studies consistently indicate stress reactivity as a predictor for future health and disease outcomes. Dysregulation of stress reactivity may represent a mechanism by which psychological stress contributes to the development of future health and disease outcomes.
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Schneider RH, Myers HF, Marwaha K, Rainforth MA, Salerno JW, Nidich SI, Gaylord-King C, Alexander CN, Norris KC. Stress Reduction in the Prevention of Left Ventricular Hypertrophy: A Randomized Controlled Trial of Transcendental Meditation and Health Education in Hypertensive African Americans. Ethn Dis 2019; 29:577-586. [PMID: 31641325 DOI: 10.18865/ed.29.4.577] [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] [Indexed: 12/26/2022] Open
Abstract
Background African Americans have disproportionately high rates of cardiovascular disease (CVD). Left ventricular hypertrophy (LVH) is an independent risk factor for CVD and may contribute to this disparity. Psychological stress contributes to LVH in African Americans and other populations. Objective This study evaluated the effects of stress reduction with the Transcendental Meditation (TM) technique on preventing LVH in African American adults with hypertension. Setting Martin Luther King Hospital - Charles R. Drew University of Medicine and Science, Los Angeles, CA. Method In this trial, 85 African American adults (average 52.8 years) were randomly assigned to either TM program or health education (HE) control group and completed posttesting. Participants were tested at baseline and after six months for left ventricular mass index (LVMI) by M-mode echocardiography, blood pressure, psychosocial stress and behavioral factors. Change in outcomes was analyzed between groups by ANCOVA and within groups by paired t-test. Results The TM group had significantly lower LVMI compared with the HE group (-7.55gm/m2, 95% CI -14.78 to -.34 gm/m2, P=.040). Both interventions showed significant within group reductions in BP, (SBP/DBP changes for TM: -5/ -3 mm Hg, and for HE: -7/-6 mm Hg, P=.028 to <.001) although between group changes were not significant. In addition, both groups showed significant reductions in anger (P=.002 to .001). There were no other changes in lifestyle factors. Conclusions These findings indicate that stress reduction with TM was effective in preventing LVMI progression and thus may prevent LVH and associated CVD in high-risk African American patients.
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Affiliation(s)
- Robert H Schneider
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - Hector F Myers
- Vanderbilt University, Vanderbilt Place, Nashville, Tennessee, USA
| | - Komal Marwaha
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - Maxwell A Rainforth
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - John W Salerno
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - Sanford I Nidich
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - Carolyn Gaylord-King
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - Charles N Alexander
- Institute for Natural Medicine and Prevention, Maharishi University of Management, Fairfield, IA, USA
| | - Keith C Norris
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Ginty AT, Kraynak TE, Fisher JP, Gianaros PJ. Cardiovascular and autonomic reactivity to psychological stress: Neurophysiological substrates and links to cardiovascular disease. Auton Neurosci 2017; 207:2-9. [PMID: 28391987 DOI: 10.1016/j.autneu.2017.03.003] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/15/2017] [Accepted: 03/15/2017] [Indexed: 12/30/2022]
Abstract
Psychologically stressful experiences evoke changes in cardiovascular physiology that may influence risk for cardiovascular disease (CVD). But what are the neural circuits and intermediate physiological pathways that link stressful experiences to cardiovascular changes that might in turn confer disease risk? This question is important because it has broader implications for our understanding of the neurophysiological pathways that link stressful and other psychological experiences to physical health. This review highlights selected findings from brain imaging studies of stressor-evoked cardiovascular reactivity and CVD risk. Converging evidence across these studies complements animal models and patient lesion studies to suggest that a network of cortical, limbic, and brainstem areas for central autonomic and physiological control are important for generating and regulating stressor-evoked cardiovascular reactivity via visceromotor and viscerosensory mechanisms. Emerging evidence further suggests that these brain areas may play a role in stress-related CVD risk, specifically by their involvement in mediating metabolically-dysregulated or extreme stressor-evoked cardiovascular reactions. Contextually, the research reviewed here offers an example of how brain imaging and health neuroscience methods can be integrated to address open and mechanistic questions about the neurophysiological pathways linking psychological stress and physical health.
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Affiliation(s)
- Annie T Ginty
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, USA.
| | - Thomas E Kraynak
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA
| | - James P Fisher
- School of Sport, Exercise, and Rehabiliation Sciences, University of Birmingham, Birmingham, West Midlands, UK
| | - Peter J Gianaros
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA
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The association of cardiac function, structure, and glycemic control in patients with old myocardial infarction: a study using cardiac magnetic resonance. Diabetol Int 2016; 8:23-29. [PMID: 30603303 DOI: 10.1007/s13340-016-0271-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/19/2016] [Indexed: 12/14/2022]
Abstract
Purpose Cardiac magnetic resonance imaging (MRI) can provide noninvasive and accurate quantitative assessment of the left ventricular (LV) structure and function. We investigated the association between LV MRI measures and glycemic control in patients with old myocardial infarction (OMI). Materials and methods The study population consisted of 51 OMI patients. By using a 1.5-T MRI scanner, we acquired cine MRI and late gadolinium-enhanced MRI. We calculated the LV volume, LV mass (LVM), LV function and percentage of infarcted myocardial volume over the total LV myocardial volume (%LGE). Patients were allocated to three groups: normal glucose tolerance (NGT), n = 9; impaired glucose tolerance (IGT)/impaired fasting glucose (IFG), n = 15; diabetes mellitus (DM), n = 27; respectively. Results LVM was significantly increased in the DM group compared with the NGT group (p = 0.002). Multiple linear regression analysis demonstrated that HbA1c levels were significantly and independently associated with LVM after adjustment for risk factors of congestive heart failure and %LGE (p = 0.009). The LV ejection fraction (EF) was not associated with HbA1c levels. Conclusion Our findings suggest that glucose tolerance in patients with OMI may be associated with LV wall thickness. LVM calculation by cine MRI might be useful for longitudinal follow-up of the effect of diabetic treatment on OMI patients.
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The other side of the coin: Blunted cardiovascular and cortisol reactivity are associated with negative health outcomes. Int J Psychophysiol 2013; 90:1-7. [DOI: 10.1016/j.ijpsycho.2013.02.002] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 02/05/2013] [Accepted: 02/08/2013] [Indexed: 12/23/2022]
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Ginty AT, Gianaros PJ, Derbyshire SWG, Phillips AC, Carroll D. Blunted cardiac stress reactivity relates to neural hypoactivation. Psychophysiology 2013; 50:219-29. [DOI: 10.1111/psyp.12017] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 11/15/2012] [Indexed: 12/30/2022]
Affiliation(s)
- Annie T. Ginty
- School of Sport and Exercise Sciences; University of Birmingham; Birmingham; UK
| | - Peter J. Gianaros
- Department of Psychology; University of Pittsburgh; Pittsburgh; Pennsylvania; USA
| | | | - Anna C. Phillips
- School of Sport and Exercise Sciences; University of Birmingham; Birmingham; UK
| | - Douglas Carroll
- School of Sport and Exercise Sciences; University of Birmingham; Birmingham; UK
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Impact of transcendental meditation on left ventricular mass in african american adolescents. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:923153. [PMID: 22675392 PMCID: PMC3364733 DOI: 10.1155/2012/923153] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 02/13/2012] [Accepted: 03/23/2012] [Indexed: 01/12/2023]
Abstract
Background. An early sign of ventricular remodeling is increased left ventricular mass (LVM) which over time may lead to left ventricular hypertrophy, the strongest predictor of cardiovascular morbidity and mortality, other than advancing age. Methods. 62 (30 TM; 32 CTL) African American adolescents (age 16.2 ± 1.3 years) with high normal systolic BP were randomly assigned to either 4-month Transcendental Meditation (TM) or health education control groups. The echocardiographic-derived measure of LVM index (LVMI = LVM/ht2.7) was measured before and after the 4-month TM study and at 4-month followup. 2D-guided M-mode echocardiography using a Hewlett Packard 5500 echosonograph was used to determine LVMI. Results. The TM group exhibited a greater decrease in LVMI at 4-month followup compared to the CTL group (−2.6 versus +0.3 gm/ht2.7, P < 0.04). The TM group exhibited a lesser increase in BMI at 4-month follow-up compared to the CTL group (0.2 ± 1.6 versus 1.1 ± 1.4, P < 0.03). Conclusion. These findings indicate that among a group of prehypertensive African American adolescents, 4 months of TM compared to heath education resulted in a significant decrease in LVMI, and these changes were maintained at 4-month follow-up.
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Zanstra YJ, Johnston DW. Cardiovascular reactivity in real life settings: measurement, mechanisms and meaning. Biol Psychol 2010; 86:98-105. [PMID: 20561941 DOI: 10.1016/j.biopsycho.2010.05.002] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 05/07/2010] [Accepted: 05/10/2010] [Indexed: 01/19/2023]
Abstract
Cardiovascular reactivity to stress is most commonly studied in the laboratory. Laboratory stressors may have limited ecological validity due to the many constraints, operating in controlled environments. This paper will focus on paradigms that involve the measurement of cardiovascular reactions to stress in real life using ambulatory monitors. Probably the most commonly used paradigm in this field is to measure the response to a specific real life stressor, such as sitting an exam or public speaking. A more general approach has been to derive a measure of CV variability testing the hypothesis that more reactive participants will have more variable heart rate or blood pressure. Alternatively, self-reports of the participants' perceived stress, emotion or demands may be linked to simultaneously collected ambulatory measures of cardiovascular parameters. This paper examines the following four questions: (1) What is the form and what are the determinants of stress-induced CV reactivity in real life? (2) What are the psychophysiological processes underlying heart rate and blood pressure reactivity in real life? (3) Does CV reactivity determined in the laboratory predict CV reactivity in real life? (4) Are ambulatory cardiovascular measures predictive of cardiovascular disease? It is concluded that the hemodynamic processes that underlie the blood pressure response can reliably be measured in real life and the psychophysiological relationships seen in the laboratory have been obtained in real life as well. Studies examining the effects of specific real life stressors show that responses obtained in real life are often larger than those obtained in the laboratory. Subjective ratings of stress, emotion and cognitive determinants of real life stress (e.g. demand, reward and control) also relate to real life CV responses. Surprisingly, ambulatory studies on real life cardiovascular reactivity to stress as a predictor of cardiovascular disease are rare. Measuring the CV response to stress in real life may provide a better measure of the stress-related process that are hypothesized to cause disease than is possible in the laboratory. In addressing these questions, below we review the studies that we believe are representative of the field. Therefore, this review is not comprehensive.
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Aschbacher K, von Känel R, Mills PJ, Roepke SK, Hong S, Dimsdale JE, Mausbach BT, Patterson TL, Ziegler MG, Ancoli-Israel S, Grant I. Longitudinal platelet reactivity to acute psychological stress among older men and women. Stress 2009; 12:426-33. [PMID: 19096987 DOI: 10.1080/10253890802574993] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Platelet reactivity to acute stress is associated with increased cardiovascular disease risk; however, little research exists to provide systematic methodological foundations needed to generate strong longitudinal research designs. Study objectives were: 1) to evaluate whether markers of platelet function increase in response to an acute psychological stress test among older adults, 2) to establish whether reactivity remains robust upon repeated administration (i.e. three occasions approximately 1 year apart), and 3) to evaluate whether two different acute speech stress tasks elicit similar platelet responses. The 149 subjects (mean age 71 years) gave a brief impromptu speech on one of two randomly assigned topics involving interpersonal conflict. Blood samples drawn at baseline and post-speech were assayed using flow cytometry for platelet responses on three outcomes (% aggregates, % P-selectin expression, and % fibrinogen receptor expression). Three-level hierarchical linear modeling analyses revealed significant stress-induced increases in platelet activation on all outcomes (p < 0.001). No significant habituation on any measure was found. Additional reactivity differences were associated with male gender, history of myocardial infarction, and use of aspirin, statins, and antidepressants. The results demonstrate that laboratory acute stress tests continued to produce robust platelet reactivity on three activation markers among older adults over 3 years.
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Affiliation(s)
- Kirstin Aschbacher
- Department of Psychiatry, University of California San Diego, La Jolla, CA, USA
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Fraser SN, Rodgers WM, Daub B. Psychosocial Correlates of Cardiovascular Reactivity to Anticipation of an Exercise Stress Test Prior to Attending Cardiac Rehabilitation: A Preliminary Test1. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1751-9861.2008.00026.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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