TY - JOUR
T1 - Impairment of GH responsiveness to GH-releasing hexapeptide (GHRP-6) in Prader-Willi syndrome
AU - Grugni, G.
AU - Guzzaloni, G.
AU - Morabito, F.
PY - 2001
Y1 - 2001
N2 - The aim of this study was to evaluate the GH-releasing activity of a synthetic hexapeptide, GHRP-6, in the Prader-Willi syndrome (PWS). Sixteen PWS patients (7 males and 9 females, aged 12.7-38.3 yr), 15 with essential obesity (OB) (7 males and 8 females, aged 12.9-42.9 yr), and 8 short normal children (SN; 3 males and 5 females, aged 10.2-14.3 yr) underwent 2 tests on separate occasions, being challenged with GHRP-6 (1 μg/kg, iv) or GHRP (1 μg/kg, iv)+PD (60 or 120 mg for children or adults, po). Moreover, in 11 patients with PWS and in the group of SN, the GH response to at least 2 stimulation tests had been previously determined. GH was analyzed either as mean peak values (GHp, mcg/l), or as the area under the curve (AUC, mcg/l/h) and the net incremental area under the curve (nAUC, mcg/l/h). In the group of PWS subjects, GH responses to both GHRP-6 (GHp: 11.4±2.0; AUC: 588±113; nAUC: 483±108) and GHRH+PD (GHp: 7.3±1.8; AUC: 486±122; nAUC: 371±250) were significantly lower than those observed either in OB (GHRP-6: GHp: 25.7±3.2, p
AB - The aim of this study was to evaluate the GH-releasing activity of a synthetic hexapeptide, GHRP-6, in the Prader-Willi syndrome (PWS). Sixteen PWS patients (7 males and 9 females, aged 12.7-38.3 yr), 15 with essential obesity (OB) (7 males and 8 females, aged 12.9-42.9 yr), and 8 short normal children (SN; 3 males and 5 females, aged 10.2-14.3 yr) underwent 2 tests on separate occasions, being challenged with GHRP-6 (1 μg/kg, iv) or GHRP (1 μg/kg, iv)+PD (60 or 120 mg for children or adults, po). Moreover, in 11 patients with PWS and in the group of SN, the GH response to at least 2 stimulation tests had been previously determined. GH was analyzed either as mean peak values (GHp, mcg/l), or as the area under the curve (AUC, mcg/l/h) and the net incremental area under the curve (nAUC, mcg/l/h). In the group of PWS subjects, GH responses to both GHRP-6 (GHp: 11.4±2.0; AUC: 588±113; nAUC: 483±108) and GHRH+PD (GHp: 7.3±1.8; AUC: 486±122; nAUC: 371±250) were significantly lower than those observed either in OB (GHRP-6: GHp: 25.7±3.2, p
KW - GH
KW - GHRP-6
KW - Obesity
KW - Prader-Willi syndrome
KW - Short stature
UR - http://www.scopus.com/inward/record.url?scp=0034998016&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034998016&partnerID=8YFLogxK
M3 - Article
C2 - 11407654
AN - SCOPUS:0034998016
VL - 24
SP - 340
EP - 348
JO - Journal of Endocrinological Investigation
JF - Journal of Endocrinological Investigation
SN - 0391-4097
IS - 5
ER -