| 1. |
- Lundstam, Ulf, 1972, et al.
(författare)
-
Epidermal growth factor levels are related to diastolic blood pressure and carotid artery stiffness.
- 2007
-
Ingår i: Scand Cardiovasc J. - : Informa UK Limited. - 1401-7431. ; , s. 1-5
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives. The epidermal growth factor (EGF) is believed to be involved in vascular remodelling. EGF receptors are expressed in human atherosclerotic tissue. Design. In order to study the role of EGF in vascular remodelling and early progression of atherosclerosis, 17 men and 16 women aged 20 to 45 years were recruited. Common Carotid Artery Stiffness index (CCA SI) and blood pressure were evaluated. In addition, serum levels of EGF and blood lipids were measured. Results. The levels of serum EGF were significantly correlated to diastolic blood pressure (p<0.05) and CCA SI (p<0.05). Subjects with EGF concentrations in the upper median had significantly lower levels of HDL (High Density Lipoproteins) (p<0.05) and ApoA1 (Apolipoprotein) (p<0.05) than those with EGF concentrations in the lower median. Discussion. High serum level of EGF is associated with elevated diastolic blood pressure and increased vessel stiffness suggesting a possible functional role of EGF in the cardiovascular system in a healthy population.
|
|
| 2. |
- Sverrisdóttir, Yrsa Bergmann, 1960, et al.
(författare)
-
Muscle sympathetic nerve activity is related to a surrogate marker of endothelial function in healthy individuals.
- 2010
-
Ingår i: PloS one. - : Public Library of Science (PLoS). - 1932-6203. ; 5:2
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Evidence from animal studies indicates the importance of an interaction between the sympathetic nervous system and the endothelium for cardiovascular regulation. However the interaction between these two systems remains largely unexplored in humans. The aim of this study was to investigate whether directly recorded sympathetic vasoconstrictor outflow is related to a surrogate marker of endothelial function in healthy individuals. METHODS AND RESULTS: In 10 healthy normotensive subjects (3 f/7 m), (age 37+/-11 yrs), (BMI 24+/-3 kg/m(2)) direct recordings of sympathetic action potentials to the muscle vascular bed (MSNA) were performed and endothelial function estimated with the Reactive Hyperaemia- Peripheral Arterial Tonometry (RH-PAT) technique. Blood samples were taken and time spent on leisure-time physical activities was estimated. In all subjects the rate between resting flow and the maximum flow, the Reactive Hyperemic index (RH-PAT index), was within the normal range (1.9-3.3) and MSNA was as expected for age and gender (13-44 burst/minute). RH-PAT index was inversely related to MSNA (r = -0.8, p = 0.005). RH-PAT index and MSNA were reciprocally related to time (h/week) spent on physical activity (p = 0.005 and p = 0.006 respectively) and platelet concentration (PLT) (p = 0.02 and p = 0.004 respectively). CONCLUSIONS: Our results show that sympathetic nerve activity is related to a surrogate marker of endothelial function in healthy normotensive individuals, indicating that sympathetic outflow may be modulated by changes in endothelial function. In this study time spent on physical activity is identified as a predictor of sympathetic nerve activity and endothelial function in a group of healthy individuals. The results are of importance in understanding mechanisms underlying sympathetic activation in conditions associated with endothelial dysfunction and emphasise the importance of a daily exercise routine for maintenance of cardiovascular health.
|
|
