GH-RH Antagonist Improves Cognition and Reduces Anxiety in Mouse Brains

Growth hormone-releasing hormone (GH-RH) is primarily known for stimulating growth hormone release, but it also plays a significant role in central nervous system functions, including neurogenesis and synaptic plasticity. Dysregulation of GH-RH signaling has been implicated in neurodegenerative diseases like Alzheimer's and mood disorders. However, the specific impact of GH-RH antagonism on cognitive and emotional behaviors in a healthy brain context remains less explored.

Treatment with Antag-GH-001 significantly enhanced cognitive performance and reduced anxiety-like behaviors. In the Morris Water Maze, mice receiving 1.0 mg/kg Antag-GH-001 demonstrated a 38% reduction in escape latency (p<0.001) and spent 2.5-fold more time in the target quadrant compared to controls. > The most striking finding was a 45% decrease in anxiety-like behaviors in the elevated plus maze for the 1.0 mg/kg group, accompanied by a 32% increase in time spent in the open arms (p<0.001). Novel object recognition improved by 28% (p<0.01) in the high-dose group, indicating better memory consolidation. Furthermore, brain analysis revealed a 2.1-fold increase in BDNF (brain-derived neurotrophic factor) and a 35% decrease in pro-inflammatory cytokines like IL-6 in the hippocampus of treated mice, suggesting neuroprotective effects.