Search Results - "MORRIS, Beverley L"

Arousal From Sleep and Sympathetic Excitation During Wakefulness by Taylor, Keri S, Murai, Hisayoshi, Millar, Philip J, Haruki, Nobuhiko, Kimmerly, Derek S, Morris, Beverley L, Tomlinson, George, Bradley, T Douglas, Floras, John S

“…Obstructive apnea during sleep elevates the set point for efferent sympathetic outflow during wakefulness. Such resetting is attributed to hypoxia-induced…”
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Apnea-induced cortical BOLD-fMRI and peripheral sympathoneural firing response patterns of awake healthy humans by Kimmerly, Derek S, Morris, Beverley L, Floras, John S

“…End-expiratory breath-holds (BH) and Mueller manoeuvres (MM) elicit large increases in muscle sympathetic nerve activity (MSNA). In 16 healthy humans (9♀, 35 ±…”
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Divergent muscle sympathetic responses to dynamic leg exercise in heart failure and age‐matched healthy subjects by Notarius, Catherine F., Millar, Philip J., Murai, Hisayoshi, Morris, Beverley L., Marzolini, Susan, Oh, Paul, Floras, John S.

“…Key points People with diminished ventricular contraction who develop heart failure have higher sympathetic nerve firing rates at rest compared with healthy…”
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Association between resting-state brain functional connectivity and muscle sympathetic burst incidence by Taylor, Keri S, Kucyi, Aaron, Millar, Philip J, Murai, Hisayoshi, Kimmerly, Derek S, Morris, Beverley L, Bradley, T Douglas, Floras, John S

“…The insula (IC) and cingulate are key components of the central autonomic network and central nodes of the salience network (SN), a set of spatially distinct…”
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Microneurographic evidence in healthy middle-aged humans for a sympathoexcitatory reflex activated by atrial pressure by Millar, Philip J, Murai, Hisayoshi, Morris, Beverley L, Floras, John S

“…Atrial mechanoreceptors, stimulated by increased pressure or volume, elicit in healthy humans a net sympathoinhibitory response. The co-existence of an atrial…”
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Inverse Relationship Between Muscle Sympathetic Activity During Exercise and Peak Oxygen Uptake in Subjects With and Without Heart Failure by Notarius, Catherine F., PhD, Millar, Philip J., PhD, Murai, Hisayoshi, MD, PhD, Morris, Beverley L., RN, Floras, John S., MD, DPhil

“…To date, there have been no published reports of sympathetic recordings from the fibular nerve of patients with HF during leg exercise. [...]whether peripheral…”
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Simvastatin reduces sympathetic outflow and augments endothelium-independent dilation in non-hyperlipidaemic primary hypertension by McGowan, Cheri L, Murai, Hisayoshi, Millar, Philip J, Notarius, Catherine F, Morris, Beverley L, Floras, John S

“…Previous reports, involving hypercholesterolaemic hypertensive subjects, that statins reduce muscle sympathetic nerve activity (MSNA) did not investigate…”
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Dose-related effects of red wine and alcohol on hemodynamics, sympathetic nerve activity, and arterial diameter by Spaak, Jonas, Merlocco, Anthony C, Soleas, George J, Tomlinson, George, Morris, Beverley L, Picton, Peter, Notarius, Catherine F, Chan, Christopher T, Floras, John S

“…The cardiovascular benefits of light to moderate red wine consumption often have been attributed to its polyphenol constituents. However, the acute…”
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Comparison of Muscle Sympathetic Activity in Ischemic and Nonischemic Heart Failure by Notarius, Catherine F., PhD, Spaak, Jonas, MD, PhD, Morris, Beverley L., RN, Floras, John S., MD, DPhil

“…Abstract Background The magnitude of sympathetic activation in chronic heart failure is assumed to be independent of its cause. However, because a higher…”
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Hemodynamic after-effects of acute dynamic exercise in sedentary normotensive postmenopausal women by HARVEY, Paula J, MORRIS, Beverley L, KUBO, Toshihiko, PICTON, Peter E, SU, Winnie S, NOTARIUS, Catherine F, FLORAS, John S

“…To determine, in sedentary normotensive postmenopausal women, the after-effects of exercise on systemic and regional hemodynamics, and whether changes in total…”
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Estradiol Induces Discordant Angiotensin and Blood Pressure Responses to Orthostasis in Healthy Postmenopausal Women by Harvey, Paula J, Morris, Beverley L, Miller, Judith A, Floras, John S

“…Postmenopausal estrogen replacement therapy (ERT) is reported to increase angiotensin II under resting conditions. To determine the implications of this…”
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Exercise as an alternative to oral estrogen for amelioration of endothelial dysfunction in postmenopausal women by Harvey, Paula J., Picton, Peter E., Su, Winnie S., Morris, Beverley L., Notarius, Catherine F., Floras, John S.

“…Both exercise and postmenopausal estrogen therapy augment endothelial function. We hypothesized that their interaction would be additive. The study objectives…”
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Discordant orthostatic reflex renin-angiotensin and sympathoneural responses in premenopausal exercising-hypoestrogenic women by O'Donnell, Emma, Goodman, Jack M, Mak, Susanna, Murai, Hisayoshi, Morris, Beverley L, Floras, John S, Harvey, Paula J

“…Our prior observations in normotensive postmenopausal women stimulated the hypotheses that compared with eumenorrheic women, active hypoestrogenic…”
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Effect of Fitness on Reflex Sympathetic Neurovascular Transduction in Middle-Age Men by NOTARIUS, Catherine F, MURAI, Hisayoshi, MORRIS, Beverley L, FLORAS, John S

“…Muscle sympathetic nerve activity (MSNA) is increased in older endurance-trained men, yet the reflex sympathetic forearm vasoconstrictor response to graded…”
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After-exercise heart rate variability is attenuated in postmenopausal women and unaffected by estrogen therapy by Harvey, Paula J, O’Donnell, Emma, Picton, Peter, Morris, Beverley L, Notarius, Catherine F, Floras, John S

“…OBJECTIVE:Delayed heart rate (HR) recovery in the immediate postexercise period has been linked to adverse cardiovascular prognosis. The after effects of an…”
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Dose-related effects of red wine and alcohol on heart rate variability by Spaak, Jonas, Tomlinson, George, McGowan, Cheri L, Soleas, George J, Morris, Beverley L, Picton, Peter, Notarius, Catherine F, Floras, John S

“…In healthy subjects a standard drink of either red wine (RW) or ethanol (EtOH) has no effect on muscle sympathetic nerve activity or on heart rate (HR),…”
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Dissociation between reflex sympathetic and forearm vascular responses to lower body negative pressure in heart failure patients with coronary artery disease by Notarius, Catherine F, Morris, Beverley L, Floras, John S

“…Many heart failure (HF) patients exhibit paradoxical forearm vasodilation when central blood volume is reduced by lower body negative pressure (LBNP). We…”
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Effect of Angiotensin AT1 Receptor Blockade on Sympathetic Responses to Handgrip in Healthy Men by McGowan, Cheri L., Notarius, Catherine F., McReynolds, Andrew, Morris, Beverley L., Kimmerly, Derek S., Picton, Peter E., Floras, John S.

“…Background To determine whether angiotensin II (ANG II) contributes to the reflex skeletal muscle sympathoexcitation elicited by isometric and isotonic…”
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Caffeine Attenuates Early Post-Exercise Hypotension in Middle-Aged Subjects by Notarius, Catherine F., Morris, Beverley L., Floras, John S.

“…Sustained hypotension after an acute dynamic exercise bout is due primarily to peripheral vasodilation. We tested the hypothesis that adenosine-mediated…”
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Abstract 19395: Increased Multiple Firing of Single Muscle Vasoconstrictor Neurons during Lower Body Positive Pressure in Human Heart Failure by Millar, Philip J, Murai, Hisayoshi, Morris, Beverley L, Floras, John S

“…Abstract only Introduction: Functionally specific efferent renal sympathetic nerves fire selectively in response to distinct hemodynamic afferent inputs. Using…”
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