Renal Hemodynamic Responses to Stress in Normotensive and Hypertensive Subjects

Opioids in the Systemic Hemodynamic and Renal Responses to Stress in Conscious Spontaneously Hypertensive Rats

Endogenous opioid peptides have been implicated in the regulation of cardiovascular and renal function. We tested this hypothesis by examining whether the opioid antagonist naloxone alters the cardiovascular or renal responses produced by environmental stress (air stress) in conscious spontaneously hypertensive rats (SHR). Before naloxone administration, air stress produced significant increase...

Hemodynamic responses to bilateral lesions of the nucleus tractus solitarii in spontaneously hypertensive and normotensive rats.

Systemic and regional hemodynamic responses to bilateral lesions of the nucleus tractus solitarii (NTS) were studied in alpha-chloralose-urethane anesthetized American Wistar rats (NR), Wistar-Kyoto rats (WKY), and spontaneously hypertensive rats (SHR) by microsphere methods. After NTS lesions, arterial pressure rose by virtue of increased total peripheral resistance in each strain. Cardiac out...

Autonomic Function in Hypertensive and Normotensive Subjects

Divergent hemodynamic and hormonal responses to varying salt intake in normotensive subjects.

Blood pressure responses to 1 week of low-salt (20 mmol sodium/d) and high-salt (300 mmol sodium/d) intake were investigated in a single-blind randomized study in 163 white, nonobese normotensive subjects (65 women and 98 men; mean age, 38 +/- 1.2 years). The individuals were classified as salt sensitive when mean arterial blood pressure rose by at least 5 mm Hg during high-salt intake, as salt...

Monoamine responses to acute and chronic aerobic exercise in normotensive and hypertensive subjects.

OBJECTIVES The purpose of the present study was to compare the plasma and serum monoamine levels in sedentary, untrained normotensive and hypertensive men at rest with levels measured after an acute bout of exercise and to compare similar measurements following a 12-week aerobic training program. PLACE OF STUDY: The data obtained for this study was collected from a clinic for the prevention of ...