PMID-17353092 – Neurotrophin Gene Expression Under Semax
Agapova TY et al., "Effect of Semax on the expression of BDNF and NGF genes in the rat brain," Neurosci Lett, 2007;417(1):51-54. DOI: 10.1016/j.neulet.2007.02.042
Quick Reference
| Property | Value |
|---|---|
| PMID | 17353092 |
| DOI | 10.1016/j.neulet.2007.02.042 |
| Year | 2007 |
| Journal | Neuroscience Letters |
| Study Type | Animal in vivo |
| Evidence Level | V |
| Sample | Rat brain tissue (hippocampus, frontal cortex, brainstem, cerebellum) |
| Peptide(s) Studied | Semax |
Key Findings
- Real-time PCR analysis revealed region-specific neurotrophin gene expression changes following intranasal Semax administration in rats.
- BDNF and NGF mRNA levels were significantly increased in the hippocampus, while BDNF was also upregulated in the brainstem and cerebellum.
- NGF expression was paradoxically decreased in the frontal cortex, demonstrating that Semax exerts complex, region-specific transcriptional effects rather than a uniform neurotrophic response.
Study Design
Rats received intranasal Semax, and brain regions (hippocampus, frontal cortex, brainstem, cerebellum) were dissected at defined time points. BDNF and NGF mRNA levels were quantified using real-time PCR with region-matched controls to map the spatial profile of neurotrophin gene regulation.
Limitations
- Animal model only; human neurotrophin responses may differ in magnitude and regional specificity.
- mRNA changes were measured but downstream protein-level confirmation was not included in all regions.
Clinical Relevance
The region-specific neurotrophin modulation profile supports Semax's potential as a targeted nootropic and neuroprotective agent, particularly for hippocampus-dependent cognitive functions such as learning and memory consolidation.
Related
#research #animal-in-vivo #evidence-level-V