Abstract
Summary
24-hour uropepsin excretion levels were found to show a low positive correlation with 24-hour 17-ketosteroid excretion levels in healthy young men. To an even greater degree this is true of the day to night excretion ratios of these two biochemical measures. Since 17-ketosteroid excretion is believed to reflect adrenal cortical activity, the findings point to the possibility that adrenal cortical activity may exert a controlling effect on uropepsin excretion in young men. Older men were found to show a negative correlation in the 24-hour excretion levels of these two measures with a trend toward a similar relationship between the day to night ratios.
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