Tag: Pituitary Function

Interaction of the growth hormone releasing peptide hexarelin with somatostatin

This study investigated the interaction between hexarelin, a growth hormone-releasing peptide, and somatostatin, which inhibits growth hormone (GH) release. The results showed that somatostatin and hexarelin counteract each other’s effects on GH secretion, with somatostatin inhibiting and hexarelin stimulating GH release. The combination of hexarelin with growth hormone-releasing hormone (GHRH)

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Low-dose growth hormone-releasing hormone tests: a dose-response study

This clinical trial evaluated the dose-response relationship of GHRH(1-29)NH2 in stimulating growth hormone (GH) secretion in healthy adult males. The study found that both 10- and 100-microgram doses of GHRH(1-29)NH2 resulted in significant GH responses, with the 10-microgram dose eliciting a slower decline in GH levels, suggesting a more prolonged

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Plasma GH responses to human GHRH-antagonist in normal subjects

This clinical trial investigated the effects of a growth hormone-releasing hormone (GHRH) antagonist on plasma growth hormone (GH) levels in healthy individuals. The results showed that the GHRH antagonist significantly reduced GH secretion, demonstrating the pivotal role of endogenous GHRH in regulating GH release. This finding suggests that GHRH antagonists

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The interaction between clonidine and growth hormone releasing hormone in the stimulation of growth hormone secretion in man

This randomized controlled trial (PMID: 2147600) investigated the interaction between clonidine and GHRH on GH secretion in 6 healthy adult males. Peak GH concentrations were significantly higher when GHRH was given during rising GH levels (52.9 mU/L) compared to falling (27.5 mU/L) or stable (20.6 mU/L) levels (P=0.004). Clonidine-induced GH

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