Adrenergic, coagulation, and fibrinolytic responses to heat

Two groups of volunteers were exposed to heat in a sauna bath-one group for 10 minutes and the other for 15. There was no change in plasma adrenaline concentration until the subjects emerged from the sauna bath, when there was a slight increase in concentration. Factor VIII and thrombo-elastograph patterns did not change but marked activation of fibrinolysis was stimulated by exposure to heat. These findings support the concept that fibrinolysis is not mediated by direct adrenergic activity.

Triglyceride storage disease: a disorder of lipolysis in adipose tissue in two patients

An obese patient was studied whose adipose tissue showed a significant reduction in release of glycerol (P < 0.05) when stimulated by isoprenaline despite normal rises in tissue levels of cyclic-AMP. However, lipolysis was stimulated by a fast of 14 days as judged by weight loss and a rise in plasma fatty acids from 0.4 to 1.2 mM. The defect in this patient may be familial since her obese daughter also showed diminished release of glycerol from adipose tissue on three occasions when stimulated by isoprenaline, despite normal rises in levels of cyclic-AMP.