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Oestrogen promotes accumulation of abundant lipid droplets in the zona reticularis of the Mongolian gerbil. Lipid was observed in zona reticularis parenchymal cells but droplets were especially numerous in macrophages. Enlargement of lipid droplets was facilitated by an envelopment with lysosomal membranes. Focal areas or entire parenchymal cells may then undergo degeneration and necrosis and be incorporated into large macrophages recognizable by distinct areas of lipid-containing material as well as by small mitochondria with short cristae. Oestrogen may well act directly on zona reticularis cells inasmuch as nafoxidine, an antioestrogen, prevents these changes. Zona fasciculata cells were identical to those in controls and an intermediate region between the zona fasciculata and zona reticularis persists, although concentric whorls of rough endoplasmic reticulum seen in controls were replaced by disorganized, randomly dispersed cisternae of rough endoplasmic reticulum. Oestrogen does not elevate cortisol in the plasma.
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In this paper I have briefly reviewed the effect of nutrition on the sympathetic nervous system. I have also examined the changes in sympathetic activity in experimental models of obesity and leanness. Finally, I have tried to relate these two sets of information to the regulation of energy store by the autonomic nervous system in a nutrient balance model for regulation of food intake.
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A method of combined non-inhalation anesthesia is described which was used in children of different age with urological diseases. The administration of phentanyl, calypsol as well as seduxen and droperidol in certain doses and regimens provides an adequate anesthesiological defense in operation of different duration and traumatic character.
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