Reduction of cardiac norepinephrine improves postischemic heart function in stroke-prone spontaneously hypertensive rats. Chen H,Higashino H,Maeda K,Zhang Z,Ohta Y,Wang Z,Su D F,Yuan W J. Journal of Cardiology . 2001Chen H, Higashino H, Maeda K, Zhang Z, Ohta Y, Wang Z, Su DF, Yuan...
as from fear. The release of epinephrine causes the heart to beat faster and more strongly, the pupils to dilate, and the rate of breathing to increase. Epinephrine also causes an increase in the amount of sugar in the blood, which can be used by the body as fuel when more alertness or...
A、Faster heart rate, lower blood pressureB、Increased heart rate and blood pressureC、Slow heart rate, high blood pressureD、Decreased heart rate and blood pressureE、Heart rate and blood pressure remained unchanged 相关知识点: 试题来源: 解析 C ...
reflex reductions in heart rate by increasing SVR and arterial pressure. Infusion of norepinephrine in patients with poor ventricular function should therefore be used with caution. Recommended starting doses of norepinephrine are in the range of 2 to 16 µg/min or 0.01 to 0.3 µg/kg...
BACKGROUND: Several studies have suggested that epinephrine augments the release of norepinephrine from sympathetic nerve terminals through stimulation of presynaptic receptors, but evidence pertaining to this mechanism in the heart is scarce and conflicting. Using the microdialysis technique in the porcine ...
Norepinephrine (NE) turnover rates were measured in hamster (Mesocricetus auratus) heart and spleen tissues after 7-10 wk exposure to 7, 22, and 34 degrees C. The competitive inhibitor of NE synthesis, alpha-methyl-p-tyrosine methyl ester, was injected (200 mg/kg, ip) into acclimated anima...
Epinephrine function Epinephrine is adrenaline. It most often acts as a hormone released from the adrenal glands in response to stress. It has a smaller role as a neurotransmitter. During the fight-or-flight response, epinephrine: Works with norepinephrine to increase your heart rate, blood pr...
Epinephrine works by activating both alpha and beta receptors found in your body in response to a severe allergy (called anaphylaxis). By acting on alpha receptors, it helps to maintain your blood pressure and heart function, and by acting on beta receptors, it relaxes your lung airways to he...
The general function of norepinephrine is to mobilize the brain and body for action. Norepinephrine release is lowest during sleep, rises during wakefulness, and reaches much higher levels during situations of stress or danger, in the so-called fight-or-flight response. In the brain, norepinephrine...
The norepinephrine (NE) content, the uptake of [3H]NE, the turnover time, the turnover and the synthesis rate of the neurotransmitter in the heart and blood vessels were studied in the chronic phase of two kidney and one kidney Goldblatt renovascular hypertension, in the rat. Intact and sha...