Abstract
A synthetic hexapeptide, His-D-Trp-Ala-Trp-D-Phe-Lys-NH 2 (GHRP), was generated by a combination of conformational energy calculations and assessment of GH releasing activity (1). GHRP is reported to have remarkable GH releasing activity in a variety of species, especially in humans (2–6). First, we show clinical data regarding plasma GH responses to GHRP administration not only in normal young adults and elderly men but also in a variety of patients, including short stature and acromegaly. Subsequently, we performed animal experiments as well as in vitro studies using pituitary cells to elucidate the problems and mechanisms obtained in clinical studies.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Momany FA, Bowers CY, Reynolds GA, Chang D, Hong A, Newlander K. Design, synthesis and biological activity of peptides which release growth hormone in vitro. Endocrinology 1981;108:31–9.
Bowers CY, Momany FA, Reynolds GA, Hong A. On the in vitro and in vivo activity of a new synthetic hexapeptide that acts on the pituitary to specifically release growth hormone. Endocrinology 1984;114:1537–45.
Momany FA, Bowers CY, Reynolds GA, Hong A, Newlander K. Conformational energy studies and in vivo and in vitro activity data on growth hormone-releasing peptides. Endocrinology 1984;114:1531–6.
Ilison BE, Jorkasky DK, Curnow RT, Stote RM. Effect of a new synthetic hexapeptide to selectively stimulate growth release in healthy human subjects. J Clin Endocrinol Metab 1989;69:212–4.
Bowers CR, Reynolds GA, Durham D, Barrera CM, Perroli SS, Thorner MO. Growth hormone (GH)-releasing peptide stimulates GH release in normal men and acts synergistically with GH-releasing hormone. J Clin Endocrinol Metab 1990;70:975–82.
Hayashi S, Okimura Y, Yagi H, et al. Intranasal administration of His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 (growth hormone releasing peptide) increased plasma GH and IGF-I levels in normal men. Endocrinol Jpn 1991;38:15–21.
Fujisawa I, Kikuchi K, Nishimura K. Transection of the pituitary stalk: development of an ectopic posterior lobe assessed with MR imaging. Radiology 1987;165:487–9.
Chihara K, Kashio Y, Abe H, et al. Idiopathic growth hormone (GH) deficiency, and GH deficiency secondary to hypothalamic germinoma: effect of single and repeated administration of human GH-releasing factor (hGHR) on plasma GH level and endogenous hGRF-like immunoreactivity level in cerebrospinal fluid. J Clin Endocrinol Metab 1985;60:269–78.
Borges JLC, Blizzard RM, Gelato MC, et al. Effects of human pancreatic tumor growth hormone releasing factor on growth hormone and somatomedin C levels in patients with idiopathic growth hormone deficiency. Lancet 1983;2:119–21.
Yagi H, Uchiyama T, Shakutsui S, Chihara K. Modulation by endogenous GHRH and SRIF of GH releasing hexapeptide (GHRP-6) induced GH release in conscious male rats [Abstract]. 72nd annu meet Endocr Soc, Atlanta, 1990:50.
Bowers CY, Sartor AO, Reynolds GA, Badger TM. On the actions of the growth hormone-releasing hexapeptide, GHRP. Endocrinology 1991;128:2027–35.
Clark RG, Carlsson LMS, Trojnar J, Robinson ICAF. The effects of a growth hormone-releasing peptide and growth hormone-releasing factor in conscious and anesthetized rats. J Neuroendocrinol 1989;1:249–55.
Sartor AO, Bowers CY, Chang D. Parallel studies of His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 and human pancreatic growth hormone releasing factor-44-NH2 in rat primary pituitary cell monolayer culture. Endocrinology 1985;116:952–7.
Cheng K, Chan WWS, Barreto A, Convey EM, Smith RG. The synergistic effects of His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 on growth hormone (GH) releasing factor-stimulated GH release and intracellular adenosine 3′,5′ monophosphate accumulation in rat primary pituitary cell culture. Endocrinology 1989;124:2791–8.
Neill JD, Smith PF, Luque M, Munoz de Toro M, Nagy G, Mulchahey JJ. Detection and measurement of hormone secretion from individual pituitary cells. Recent Prog Horm Res 1987;43:175–229.
Jia L-G, Canny BJ, Orth DN, Leong DA. Distinct classes of corticotropes mediate corticotropin releasing hormone- and arginine vasopressin-stimulated adrenocorticotropin release. Endocrinology 1991;128:197–203.
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1994 Springer-Verlag New York, Inc.
About this paper
Cite this paper
Chihara, K. et al. (1994). Growth Hormone Releasing Hexapeptide: Basic Research and Clinical Application. In: Bercu, B.B., Walker, R.F. (eds) Growth Hormone II. Serono Symposia USA Norwell, Massachusetts. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-8372-7_16
Download citation
DOI: https://doi.org/10.1007/978-1-4613-8372-7_16
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4613-8374-1
Online ISBN: 978-1-4613-8372-7
eBook Packages: Springer Book Archive