Abstract
[Leu 6,desGly-NH 2 10]-LH-RH ethylamide and [Leu 6]-LH-RH, two analogs of LH-RH, were prepared by the solid phase method. LH- and FSH-releasing activity of these peptides was assayed against LH-RH by subcutaneous administration in immature male rats. When the integrated levels of LH and FSH over a 6 hr period after the injection were used as parameter of the LH- and FSH-releasing activities, the [Leu 6]-LH-RH showed LH-releasing activity of 9 times and FSH-releasing activity of 5 times greater than that of LH-RH. [Leu 6,desGly-NH 2 10]-LH-RH ethylamide showed LH- and FSH-releasing activities of 53.6 and 14.5 times greater, respectively, than that of LH-RH.
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More From: Biochemical and Biophysical Research Communications
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