scholarly journals The effect of camphor essential oil that promote the recovery process from the psychobiological stress responses induced by mental stress testing

2012 ◽  
Vol 76 (0) ◽  
pp. 2PMA05-2PMA05
Author(s):  
Hisayoshi OKAMURA ◽  
Akira TSUDA ◽  
Jumpei YAJIMA ◽  
Akira MATSUBARA ◽  
Kengo MIHARA
Keyword(s):  
Essential Oil ◽  
Stress Responses ◽  
Mental Stress ◽  
Stress Testing ◽  
Recovery Process

Ischemic Left Ventricular Performance During Provocative Mental Stress Testing

1987 ◽  
Vol 7 (4) ◽  
pp. 175
Author(s):  
LaVean P ◽  
Rozanski A ◽  
Krantz D ◽  
Cornell C ◽  
Cattanach L ◽  
...  
Keyword(s):  
Mental Stress ◽  
Stress Testing ◽  
Left Ventricular ◽  
Left Ventricular Performance ◽  
Ventricular Performance

scholarly journals Ethnicity-Specific Changes in Cardiac Troponin T in Response to Acute Mental Stress and Ethnicity-Specific Cutpoints for the R Wave of the aVL Lead

2019 ◽  
Vol 188 (8) ◽  
pp. 1444-1455 ◽  
Author(s):  
Annemarie Wentzel ◽  
Leoné Malan ◽  
Roland von Känel ◽  
Nicolaas T Malan
Keyword(s):  
Blood Pressure ◽  
Stress Responses ◽  
Cardiac Troponin ◽  
Mental Stress ◽  
Troponin T ◽  
Myocardial Strain ◽  
Peripheral Resistance ◽  
Cardiac Troponin T ◽  
Cross Sectional ◽  
Cardiac Stress

Abstract Acute mental stressor–induced cardiac stress responses might contribute to excessive myocardial strain and resultant cardiovascular episode risk. We assessed ethnicity-specific acute cardiac stress (by measuring cardiac troponin T (cTnT) and N-terminal prohormone of brain natriuretic peptide) related to hemodynamic activity. The prospective Sympathetic Activity and Ambulatory Blood Pressure in Africans (SABPA) study was conducted during 2007–2008 in South Africa. In the cross-sectional phase of the SABPA study, 388 black and white participants underwent a 1-minute acute mental stressor, during which blood pressure was continuously measured. Fasting blood samples for cardiac stress markers were obtained before and 10 minutes after stress (% change). Resting 10-lead electrocardiogram measured the R wave of the aVL lead (RaVL). Black participants exhibited greater cardiac stress responses (P < 0.001), diastolic blood pressure, total peripheral resistance, and stroke volume compared with white participants, who displayed decreases in cardiac stress and increases in cardiac output. Prestress and stressor cTnT cutpoints of 4.2 pg/mL predicted 24-hour, daytime, and nighttime diastolic hypertension in black participants (P < 0.001). These cTnT cutpoints were associated with an ethnicity-specific RaVL cutpoint of 0.28 mV (odds ratio = 3.49, 95% confidence interval: 2.18, 5.83; P = 0.021). Acute mental stress elicited an α-adrenergic activation pattern and cardiac stress hyperreactivity only in black participants. Mental stress might increase the black population’s risk for ischemic episodes and heart disease.

Type 1 long QT syndrome and psychological stress in a laboratory setting

2018 ◽  
Vol 25 (9) ◽  
pp. 1213-1221 ◽  
Author(s):  
Ilmari Määttänen ◽  
Niklas Ravaja ◽  
Pentti Henttonen ◽  
Sampsa Puttonen ◽  
Kristian Paavonen ◽  
...  
Keyword(s):  
Stress Responses ◽  
Long Qt Syndrome ◽  
Mental Stress ◽  
Mental Arithmetic ◽  
Physiological Stress ◽  
Long Qt ◽  
Mutation Carriers ◽  
Asymptomatic Patients ◽  
Qt Syndrome

Trait-like sensitivity to stress in long QT syndrome patients has been documented previously. In addition, mental stress has been associated with symptomatic status of long QT syndrome. We examined whether the symptomatic type 1 long QT syndrome patients would be more sensitive to mental stress compared to asymptomatic patients and whether there would be differences in task-related physiological stress reactions between type 1 long QT syndrome patients and healthy individuals. The study population consisted of 21 symptomatic and 23 asymptomatic molecularly defined KCNQ1 mutation carriers, their 32 non-carrier relatives and 46 non-related healthy controls, with mean ages of 37, 39, 35 and 23 years, respectively. Electrocardiography was utilised to calculate inter-beat interval and high frequency and low frequency heart rate variability. Blood pressure was measured and mean arterial pressure and pulse pressure were calculated. Stress was induced using three different tasks: mental arithmetic, reaction time and public speech. Stress responses of symptomatic and asymptomatic type 1 long QT syndrome patients were not statistically different in any of the stress tasks. Short-term physiological stress reactivity of symptomatic type 1 long QT syndrome patients appears to be normal and does not enhance the risk assessment of asymptomatic mutation carriers.

scholarly journals Effect of nutritive and non-nutritive sweeteners on hemodynamic responses to acute stress: a randomized crossover trial in healthy women

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jérémy Cros ◽  
Lucie Bidlingmeyer ◽  
Robin Rosset ◽  
Kevin Seyssel ◽  
Camille Crézé ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Mean Arterial Pressure ◽  
Arterial Pressure ◽  
Chronic Stress ◽  
Stress Responses ◽  
Mental Stress ◽  
Acute Stress ◽  
Mental Arithmetic ◽  
Hemodynamic Responses ◽  
Hemodynamic Stress

Abstract Background The mechanisms by which chronic stress increases the risk of non-communicable diseases remain poorly understood. On one hand, chronic stress may increase systemic vascular resistance (SVR) and blood pressure, which may lead to blood vessels injury and altered myocardial perfusion. On the other hand, chronic stress may promote the overconsumption of sugar-containing foods and favor obesity. There is indeed evidence that sweet foods are preferentially consumed to alleviate stress responses. The effects of nutritive and non-nutritive sweeteners (NNS) on hemodynamic stress responses remain however largely unknown. Objective/design This study aimed at comparing the effects of sucrose-containing and NNS-containing drinks, as compared to unsweetened water, on hemodynamic responses to acute stress in twelve healthy female subjects. Acute stress responses were elicited by a 30-min mental stress (5-min Stroop’s test alternated with 5-min mental arithmetic) and a 3-min cold pressure test (CPT), each preceded by a resting baseline period. Hemodynamic stress responses were investigated by the repeated measurement of mean arterial pressure and the continuous monitoring of cardiac output by thoracic electrical bioimpedance measurement. SVR was selected as a primary outcome because it is a sensitive measure of hemodynamic responses to acute stress procedures. Results With all three drinks, SVR were not changed with mental stress (P = 0.437), but were increased with CPT (P = 0.045). Both mental stress and CPT increased mean arterial pressure and heart rate (all P < 0.001). Cardiac output increased with mental stress (P < 0.001) and remained unchanged with CPT (P = 0.252). No significant differences in hemodynamic responses were observed between water, sucrose and NNS (stress × condition, all P > 0.05). Conclusions These results demonstrate that sucrose and NNS do not alter hemodynamic responses to two different standardized acute stress protocols.

scholarly journals Stress Response and Virulence Potential Modulating Effect of Peppermint Essential Oil inCampylobacter jejuni

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
J. K. Kovács ◽  
P. Felső ◽  
Gy. Horváth ◽  
J. Schmidt ◽  
Á. Dorn ◽  
...  
Keyword(s):  
Stress Response ◽  
Essential Oil ◽  
Stress Responses ◽  
Gastrointestinal Symptoms ◽  
Gastrointestinal Diseases ◽  
Sublethal Concentration ◽  
Scanning Electron Micrographs ◽  
Stress Genes ◽  
General Stress ◽  
Virulence Potential

Campylobacter jejuniis one of the most common food-borne bacteria that causes gastrointestinal symptoms. In the present study we have investigated the molecular basis of the anti-Campylobactereffect of peppermint essential oil (PEO), one of the oldest EO used to treat gastrointestinal diseases. Transcriptomic, quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and proteomic, two-dimensional polyacryl amid gel electrophoresis (2D-PAGE) methods have revealed that, in the presence of a sublethal concentration of PEO, the expression of several virulence-associated genes was decreased (cheY0.84x;flhB0.79x;flgE0.205x;cadF0.08x;wlaB0.89x;porA0.25x;cbf24.3x) while impaired motility was revealed with a functional analysis. Scanning electron micrographs of the exposed cells showed that, unlike in the presence of other stresses, the originally curvedC. jejunicells straightened upon PEO exposure. Gaining insight into the molecular background of this stress response, we have revealed that in the presence of PEOC. jejunidominantly exerts a general stress response that elevates the expression of general stress genes likednaK,groEL,groES(10.41x, 3.63x, and 4.77x). The most important genesdps,sodB, andkatAinvolved in oxidative stress responses showed however moderate transcriptional elevations (1,58x, 1,55x, and 1,85x).

Stress responses of honey bees to organic acid and essential oil treatments against varroa mites

2017 ◽  
Vol 56 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Nazmiye Gunes ◽  
Levent Aydın ◽  
Deniz Belenli ◽  
John M. Hranitz ◽  
Sami Mengilig ◽  
...  
Keyword(s):  
Essential Oil ◽  
Organic Acid ◽  
Stress Responses ◽  
Honey Bees ◽  
Varroa Mites

Cardiovascular reactivity in isometric exercise and mental arithmetic in children

1994 ◽  
Vol 76 (1) ◽  
pp. 146-150 ◽  
Author(s):  
H. A. Verhaaren ◽  
R. M. Schieken ◽  
P. Schwartz ◽  
M. Mosteller ◽  
D. Matthys ◽  
...  
Keyword(s):  
Cardiovascular Reactivity ◽  
Stress Responses ◽  
Mental Stress ◽  
Mental Arithmetic ◽  
Isometric Exercise ◽  
Left Ventricular ◽  
Stress Tests ◽  
Isometric Handgrip ◽  
Cardiovascular Stress ◽  
Changes Over Time

In children, we studied noninvasively the cardiovascular stress responses, including changes over time of systolic blood pressure (SBP), heart rate (HR), and stroke volume (SV) in isometric handgrip (IHG) and mental arithmetic. Specifically, we asked whether 1) these cardiovascular stress responses were different for the two stress conditions in children, 2) these responses differed in boys and girls, and 3) the anthropometric variables related to these stress responses. SV differed significantly between IHG and mental arithmetic over the entire stress period. This may reflect higher systemic vascular resistance during IHG. HR in boys was lower than in girls over the entire period of stress in both stress tests. This observation cannot be attributed to differences in conditioning, because this should not influence responses to isometric or mental stress. A larger left ventricular mass was related to higher SVs. A marked relationship was found between HR and SBP and between HR and SV. No relationship was found between SBP and SV.

scholarly journals Effects of AHCC® on Immune and Stress Responses in Healthy Individuals

2018 ◽  
Vol 23 ◽  
pp. 215658721875651 ◽  
Author(s):  
Jun Takanari ◽  
Atsuya Sato ◽  
Hideaki Waki ◽  
Shogo Miyazaki ◽  
Kazuo Uebaba ◽  
...  
Keyword(s):  
Stress Responses ◽  
Mental Stress ◽  
Lentinula Edodes ◽  
Parasympathetic Nervous System ◽  
Natural Killer Cell Activity ◽  
Killer Cell ◽  
Nervous Activity ◽  
Cell Activity ◽  
Sympathetic Nervous Activity ◽  
Sympathetic Nervous

AHCC® is a functional food from the basidiomycete Lentinula edodes. We evaluated the effects of AHCC® on subjects under different kinds of stress and at rest. Physical stress was imposed using an active standing test, known as Schellong’s test. Sympathetic nervous activity in the standing position was significantly greater in AHCC®-treated subjects than in a placebo group. In contrast, AHCC® significantly increased parasympathetic nervous activity at rest. Under mental stress, AHCC® increased sympathetic nervous activity, with no difference in the parasympathetic nervous system. In subjects with chronic mental stress, self-reported “initiation and maintenance of sleep” was significantly greater in the AHCC®-intake period than in the placebo intake period, and natural killer cell activity also increased after AHCC® intake, suggesting a possible mechanism of action of AHCC®. Our findings indicate that AHCC® is potentially effective in stress management and may be useful in the treatment of depression.

Sign in / Sign up

Export Citation Format

Share Document