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Titolo:
Gender specific sympathetic and hemorrheological responses to mental stress in healthy young subjects
Autore:
Ross, AE; Flaa, A; Hoieggen, A; Reims, H; Eide, IK; Kjeldsen, SE;
Indirizzi:
Ulleval Univ Hosp, Dept Nephrol, NO-0407 Oslo, Norway Ulleval Univ Hosp Oslo Norway NO-0407 Dept Nephrol, NO-0407 Oslo, Norway Ulleval Univ Hosp, Dept Cardiol, NO-0407 Oslo, Norway Ulleval Univ Hosp Oslo Norway NO-0407 Dept Cardiol, NO-0407 Oslo, Norway
Titolo Testata:
SCANDINAVIAN CARDIOVASCULAR JOURNAL
fascicolo: 5, volume: 35, anno: 2001,
pagine: 307 - 312
SICI:
1401-7431(200110)35:5<307:GSSAHR>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOOD-VISCOSITY; SEX-DIFFERENCES; HYPERTENSION; INSULIN; EPINEPHRINE; PRESSURE; DISEASE; VOLUME; ARTERY; RISK;
Keywords:
blood viscosity; catecholamines; gender differences; hemorrheology; mental stress;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Hoieggen, A Ulleval Univ Hosp, Dept Nephrol, NO-0407 Oslo, Norway Ulleval Univ Hosp Oslo Norway NO-0407 , NO-0407 Oslo, Norway
Citazione:
A.E. Ross et al., "Gender specific sympathetic and hemorrheological responses to mental stress in healthy young subjects", SC CARDIOVA, 35(5), 2001, pp. 307-312

Abstract

Objective-Activation of the sympathetic nervous system may increase hematocrit (Hct), whole blood viscosity (WBV), and possibly cardiovascular risk. The aim was to study gender specific differences of mental stress on sympathetic reactivity and blood rheology. Methods-Responses in blood pressure, heart rate (HR), Het, WBV (Bohlin rotational viscosimeter), and plasma catecholamines to a mental arithmetic stress test (MST) were measured in male (n = 10, 23 +/- 3 years, BMI 23 +/- 2 kg/m(2)) and female (n = 10, 21 +/- 4 years, BMI 24 +/- 2 kg/m(2)) students. Results-Systolic blood pressure (SBP), diastolic blood pressure (DBP), andHR increased during MST in men and women, and declined to baseline levels after 15 min of recovery. In men., plasma adrenaline increased by 217% during MST (p < 0.01, A-NOVA), and plasma noradrenaline increased by 68% (p < 0.05). Hct and WBV at low shear rates (0.5 and 1.11/s) increased as well (p < 0.01, p < 0.05, and p < 0.05, respectively). In women, the increase in plasma adrenaline averaged 118% during MST (p < 0.05) while plasma noradrenaline (-3%, p = 0.38), Hct, and WBV at all shear rates remained unchanged. Men and women differed in Delta adrenaline (p < 0.05), Delta noradrenaline (p= 0.01), Delta Hct (p < 0.05), and Delta WBV (p < 0.05). Delta Hct tended to correlate with Delta SBP (r = 0.60, 0.07), Delta DBP (r = 0.57, p = 0.09), and Delta HR (r = 0.50, p = 0.14), and correlated significantly with Delta noradrenaline (r = 0.66, p < 0.05) in men only. Multiple regression analysis showed that gender independently explained 22% of the change in Hct during mental stress. Conclusion-Data suggest gender specific differences in sympathetic and hemorrheological responses to mental stress in healthy young subjects. In men,sympathetic responses were related to hemorrheological responses, but not Z in women. It may be speculated whether such differences in stress responses may contribute to lower cardiovascular risk in premenopausal women than in men.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 11:06:35