title: Effect of cortisol treatment on hormonal relationships in congenital adrenal hyperplasia.
abstract: The temporal relationship between administration of cortisol and serum 17alpha-hydroxyprogesterone was investigated in five patients aged 9-19 years with congenital adrenal hyperplasia due to 21-hydroxylase deficiency. There was marked variability in the 17alpha-hydroxyprogesterone response (determined hourly for 24 h) of individual patients to administration of cortisol. Mean concentration was less than 0.030 micronmol/l in one patient but 0.519 micronmol/l in another. Levels were higher in all patients while off treatment, and were greatest in those with salt-losing adrenal hyperplasia. Growth hormone secretion was not suppressed by treatment with cortisol. Withdrawal of cortisol for 3 days resulted in a significant decrease in the mean serum FSH/LH ratio and a rise in serum testosterone in all subjects. Episodic release of gonadotrophins persisted in the adolescent patients.
mesh_terms: D015068:17-Ketosteroids / Q000652:urine; D000293:Adolescent; D000308:Adrenocortical Hyperfunction / Q000188:drug therapy*; D000328:Adult; D002648:Child; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D013006:Growth Hormone / Q000097:blood; D006801:Humans; D006854:Hydrocortisone / Q000627:therapeutic use*; D006908:Hydroxyprogesterones / Q000097:blood*; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D013739:Testosterone / Q000097:blood; D013997:Time Factors
chemical_list: D015068:17-Ketosteroids; D006908:Hydroxyprogesterones; D013739:Testosterone; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D013006:Growth Hormone; D006854:Hydrocortisone