[Effects of intranasal administration of LHRH superanalogue on endogenous LHRH and gonadotropins in humans].
Plasma LH, FSH and endogenous LHRH were determined by radioimmunoassay (RIA) when 100 micrograms of LHRH superanalogue, des-Gly10-[D-Leu6]-LHRH ethylamide (leuprolide) was intranasally administered to both 7 healthy subjects aged 22 to 63 years and 6 patients with various hypogonadism aged 22 to 43 years [2 with anorexia nervosa, 3 with hypophysial hypogonadism and 1 with isolated gonadotropin (Gn) deficiency]. The response of plasma LH after the intranasal administration of leuprolide was observed to be 814 +/- 236 (mean +/- SE)% in the healthy subjects at 2 to 10 hours, and 528 +/- 183% in the patients with hypogonadism at 2 to 4 hours. These elevations were observed until 24 hours after administration in both groups. The response of plasma FSH was observed to be 449 +/- 99% in the healthy subjects at 3 to 8 hours, and 593 +/- 238% in the patients with hypogonadism at 2 to 6 hours. These elevations were observed until 24 hours in the healthy subjects and until 12 hours in the patients with hypogonadism. Furthermore, these responses tended to be higher than those after 100 micrograms intravenous administration of LHRH; LH responded up to 386 +/- 50% in the healthy subjects and up to 390 +/- 91% in the patients with hypogonadism, and FSH up to 282 +/- 38%, 343 +/- 90%, respectively. The elevation of plasma immunoreactive LHRH which was determined using RIA having no immunocrossreactivity with leuprolide (less than 0.01%) was observed at 6 hours after the administration of leuprolide in the healthy subjects (789 +/- 497%).(ABSTRACT TRUNCATED AT 250 WORDS)
D000281:Administration, Intranasal; D000328:Adult; D000856:Anorexia Nervosa / Q000097:blood; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D007987:Gonadotropin-Releasing Hormone / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000097:blood* / Q000494:pharmacology; D006062:Gonadotropins / Q000097:blood*; D006801:Humans; D007006:Hypogonadism / Q000097:blood; D016729:Leuprolide; D008297:Male; D008875:Middle Aged
D006062:Gonadotropins; D007987:Gonadotropin-Releasing Hormone; D005640:Follicle Stimulating Hormone; D016729:Leuprolide