PMID-15159690 – Cortagen Effect on Gene Expression in Mouse Heart by Microarray
Khavinson VKh, Tendler SM, Vanyushin BF, et al. Elucidation of the effect of brain cortex tetrapeptide Cortagen on gene expression in mouse heart by microarray. Neuro Endocrinol Lett. 2004;25(1-2):87-93.
Quick Reference
| Property | Value |
|---|---|
| PMID | 15159690 |
| DOI | — |
| Year | 2004 |
| Journal | Neuro Endocrinology Letters |
| Study Type | Animal in vivo |
| Evidence Level | V |
| Sample | Mouse heart tissue; microarray gene expression analysis |
| Peptide(s) Studied | Cortagen |
Key Findings
- Brain cortex tetrapeptide Cortagen (Ala-Glu-Asp-Pro) altered expression of multiple genes in mouse heart tissue, as assessed by microarray analysis
- The study demonstrated that a brain-derived peptide bioregulator can have effects outside its tissue of origin, though the cerebral cortex remains the primary target
- Cortagen modulated genes involved in cellular stress response, signal transduction, and transcription regulation
- The finding of cross-tissue effects challenges the strict tissue-specificity model of Khavinson bioregulators
Study Design
Mice were treated with Cortagen and heart tissue was harvested for gene expression analysis using DNA microarray technology. Gene expression changes were compared to untreated controls.
Limitations
- Small animal study without detailed statistical analysis reporting
- Microarray findings were not validated by RT-PCR confirmation
- Cross-tissue effects complicate the tissue-specificity narrative
- All authors from the Khavinson group
- No independent replication
Clinical Relevance
Provides microarray-level evidence that Cortagen affects gene expression in vivo, but the clinical significance of the observed gene expression changes is unclear. The cross-tissue effect noted in this study is an important consideration for safety assessment.
Methodological Note: This study originates from the Khavinson bioregulation group. Independent replication by Western laboratories is lacking.
Related
#research #animal-in-vivo #evidence-level-V #khavinson-bioregulator #peptide-cortagen