Comparison of the pharmacological properties of pituitary and biosynthetic human growth hormone. Demonstration of antinatriuretic/antidiuretic and barbital sleep effects of human growth hormone in rats.

Biosynthetic human growth hormone was compared with pituitary human growth hormone and pituitary 22 K in the weight gain and the tibia test. The three preparations were found to be equipotent. Furthermore, the growth hormones were compared in various pharmacological test systems. All three preparations were found to have a marked antidiuretic and antinatriuretic effect in the rat and to cause a significant shortening of the hexobarbital sleeping time in mice. Biosynthetic and pituitary preparations had the same diabetogenic activity in obese mice, and the growth hormones did not differ with respect to pharmacological profiles in the test systems applied.