PMID-12049808 – Epitalon Inhibits Colon Carcinogenesis in Rats
Anisimov VN, Khavinson VKh, Provinciali M, Alimova IN, Baturin DA, Popovich IG, Zabezhinski MA, Imyanitov EN, Mancini R, Franceschi C. Inhibitory effect of the peptide Epitalon on the development of spontaneous mammary tumors in HER-2/neu transgenic mice. Int J Cancer. 2002; Cancer Lett. 2002;183(1):1-8. DOI: 10.1016/s0304-3835(02)00090-3.
Quick Reference
| Property | Value |
|---|---|
| PMID | 12049808 |
| DOI | 10.1016/s0304-3835(02)00090-3 |
| Year | 2002 |
| Journal | Cancer Letters |
| Study Type | Animal in vivo |
| Evidence Level | V |
| Sample | DMH-treated rats (1,2-dimethylhydrazine colon carcinogenesis model) |
| Peptide(s) Studied | Epitalon |
Key Findings
- Epitalon significantly reduced colon carcinoma incidence in rats treated with the chemical carcinogen 1,2-dimethylhydrazine (DMH)
- Tumor multiplicity (number of tumors per animal) was also significantly lower in the Epitalon-treated group
- Control groups showed carcinoma development in 90-100% of animals, while Epitalon treatment produced a meaningful reduction in tumor burden
Study Design
Rats were administered DMH to induce colon carcinogenesis, a well-established chemical carcinogenesis model. Epitalon was given as a treatment intervention. Animals were monitored for tumor development, and colon tissues were examined histologically at study endpoint to assess carcinoma incidence, multiplicity, and tumor characteristics compared to untreated DMH-exposed controls.
Limitations
- Chemical carcinogenesis model (DMH) does not fully replicate spontaneous or genetically driven human colorectal cancer
- No mechanistic analysis was performed to elucidate how Epitalon reduced carcinogenesis (e.g., immune modulation, apoptosis induction, or antioxidant effects)
- Methodological note: Study is from the Khavinson/Anisimov group. No independent replication of Epitalon's effects in colon carcinogenesis models has been published.
Clinical Relevance
The significant reduction in chemically induced colon carcinogenesis suggests potential chemopreventive properties of Epitalon. However, the gap between chemical carcinogenesis models and human cancer is substantial, and no clinical trials have investigated Epitalon in cancer prevention. These findings remain preclinical and hypothesis-generating.
Related
#research #animal-in-vivo #evidence-level-V