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The association of obesity and hypertension is well recognized. Although the frequency of hypertension in obese subjects varies depending upon the age, race, and sex of the population studied, as well as the definitions employed for 'hypertension' and 'obesity", several reports suggest that as many as 50 to 60 percent of overweight people have high blood(More)
Brown adipose tissue (BAT) is an important site of adaptive changes in thermogenesis in the rat. The sympathetic nervous system, which richly supplies BAT, is thought to play an important role in the regulation of BAT thermogenesis because catecholamines stimulate and beta adrenergic blocking agents inhibit oxygen consumption in this tissue. The present(More)
: 1. The use of tritiated norepinephrine (NE) to measure the turnover rate of NE in sympathetically innervated organs was pioneered in the laboratory of Julius Axelrod. This technique provides an organ specific assessment of sympathetic activity, integrated over a 24 h period, in free living laboratory animals. As such it has proved useful in estimating(More)
Norepinephrine (NE) turnover measured in individual skeletal muscles of the rat assessed sympathetic responses to cold (4 degrees C) and diet. Acute cold exposure increased NE turnover slightly (15-50%) in all muscles examined, including gastrocnemius, tibialis anterior, tensor fascia lata, and soleus, in contrast, cold-accelerated NE turnover in heart by(More)
Various epidemiologic studies have linked an increase in serum uric acid level to an increased risk of coronary heart disease. The reasons for this finding are unclear. The authors examined the influence of a number of cardiovascular disease risk factors on serum uric acid level in 886 middle-aged and older men participating in the Normative Aging Study.(More)
The relative importance of sympathetic nerve (SNS) activity and adrenal medullary secretion in various physiological situations has generally been inferred from measurements of norepinephrine (NE) and epinephrine (E), respectively, in urine or plasma. Increasing evidence, however, indicates that under certain conditions the adrenal medulla may release(More)
The sympathetic nervous system (SNS) plays a critical role in the regulation of mammalian thermogenic responses to cold exposure and dietary intake. Catecholamine-stimulated thermogenesis is mediated by the beta-adrenergic receptor. In the rat brown adipose tissue is the major site of metabolic heat production in response to both cold (nonshivering(More)