CONTEXT: The current criteria for definition of partial GHD in young adults are still a subject of debate. OBJECTIVES: The objective of the study was to reinvestigate anterior pituitary function in young adults with congenital childhood-onset GHD associated with structural hypothalamic-pituitary abnormalities and normal GH response at the time of first reassessment of GH secretion. DESIGN AND SETTING: This was a prospective explorative study conducted in a university research hospital. PATIENTS AND METHODS: Thirteen subjects with a mean age of 17.2 +/- 0.7 yr and a peak GH after insulin tolerance test (ITT) higher than 5 microg/liter were recruited from a cohort of 42 patients with childhood-onset GHD and ectopic posterior pituitary at magnetic resonance imaging. GH secretion after ITT and GHRH plus arginine, IGF-I concentration, and body mass index, waist circumference, blood pressure, total cholesterol, and fibrinogen were evaluated at baseline and at 2-yr follow-up. RESULTS: At mean age of 19.2 +/- 0.7 yr, the mean peak GH response decreased significantly after ITT (P = 0.00001) and GHRH plus arginine (P = 0.0001). GH peak values after ITT and GHRH plus arginine were less than 5 and 9 microg/liter in 10 and eight patients, respectively. Additional pituitary defects were documented in eight patients. Significant changes were found in the values of IGF-I sd score (P = 0.0026), waist circumference (P = 0.00001), serum total cholesterol (P = 0.00001), and serum fibrinogen (P = 0.0004). CONCLUSIONS: The results of this study underline the importance of further reassessment of pituitary function in young adults with GHD of childhood-onset and poststimulation GH responses suggestive of partial GHD.
CONTEXT: The current criteria for definition of partial GHD in young adults are still a subject of debate. OBJECTIVES: The objective of the study was to reinvestigate anterior pituitary function in young adults with congenital childhood-onset GHD associated with structural hypothalamic-pituitary abnormalities and normal GH response at the time of first reassessment of GH secretion. DESIGN AND SETTING: This was a prospective explorative study conducted in a university research hospital. PATIENTS AND METHODS: Thirteen subjects with a mean age of 17.2 +/- 0.7 yr and a peak GH after insulin tolerance test (ITT) higher than 5 microg/liter were recruited from a cohort of 42 patients with childhood-onset GHD and ectopic posterior pituitary at magnetic resonance imaging. GH secretion after ITT and GHRH plus arginine, IGF-I concentration, and body mass index, waist circumference, blood pressure, total cholesterol, and fibrinogen were evaluated at baseline and at 2-yr follow-up. RESULTS: At mean age of 19.2 +/- 0.7 yr, the mean peak GH response decreased significantly after ITT (P = 0.00001) and GHRH plus arginine (P = 0.0001). GH peak values after ITT and GHRH plus arginine were less than 5 and 9 microg/liter in 10 and eight patients, respectively. Additional pituitary defects were documented in eight patients. Significant changes were found in the values of IGF-I sd score (P = 0.0026), waist circumference (P = 0.00001), serum total cholesterol (P = 0.00001), and serum fibrinogen (P = 0.0004). CONCLUSIONS: The results of this study underline the importance of further reassessment of pituitary function in young adults with GHD of childhood-onset and poststimulation GH responses suggestive of partial GHD.
Authors: Aline P Otto; Marcela M França; Fernanda A Correa; Everlayny F Costalonga; Claudia C Leite; Berenice B Mendonca; Ivo J P Arnhold; Luciani R S Carvalho; Alexander A L Jorge Journal: Pituitary Date: 2015-08 Impact factor: 4.107
Authors: A Ciresi; S Radellini; E Vigneri; V Guarnotta; J Bianco; M G Mineo; C Giordano Journal: J Endocrinol Invest Date: 2017-08-18 Impact factor: 4.256
Authors: Charmian A Quigley; Anthony J Zagar; Charlie Chunhua Liu; David M Brown; Carol Huseman; Lynne Levitsky; David R Repaske; Eva Tsalikian; John J Chipman Journal: Int J Pediatr Endocrinol Date: 2013-02-13
Authors: José I. Labarta; Michael B. Ranke; Mohamad Maghnie; David Martin; Laura Guazzarotti; Roland Pfäffle; Ekaterina Koledova; Jan M. Wit Journal: J Clin Res Pediatr Endocrinol Date: 2020-10-02