Peripheral Venoconstriction in Hunan

Peripheral Venoconstriction in Hunan

V ENOCONSTRICTION has been suggested as an explanation for a variety of observations made on animals and humans suffering from cardiac decompensation.'-5 We have used the method described by Litter and coworkers for measuring peripheral venous distensibility' to study this aspect of congestive heart failure in man. The method measures the increment of limb volume occurring in response to a know...

Peripheral venoconstriction in human congestive heart failure.

Reflex peripheral venoconstriction induced by carotid occlusion.

The present investigation was designed to obtain additional evidence for the effect of carotid sinus reflexes on venous tone. It was found that occlusion of one or both common carotid arteries increases tension in a miniature balloon inserted into a peripheral vein. Deafferentation of the aortic arch by cervical vagotomy enhanced the venous response. The time course and magnitude of the venous ...

Clinical and Physiological Effects of an Acute -1 Adrenergic Agonist and a -1 Adrenergic Antagonist in Chronic Orthostatic Intolerance

Background—Adrenergic agents are commonly used in the treatment of chronic orthostatic intolerance with postural tachycardia syndrome (POTS). POTS may be associated with increased limb blood flow (“high flow”) and defective orthostatic vasoconstriction or decreased limb blood flow (“low flow”) and potentially with small blood volume. Methods and Results—We investigated the consequences of short...

Naringin ameliorates cognitive deficits in streptozotocin-induced diabetic rats

Objective(s):Previous research demonstrated that diabetes is one of the leading causes of learning and memory deficits. Naringin, a bioflavonoid isolated from grapefruits and oranges, has potent protective effects on streptozotocin (STZ)-induced diabetic rats. Recently, the effects of naringin on learning and memory performances were monitored in many animal models of cognitive impairment. Howev...