Khavinson Bioregulators (Epitalon, Pinealon) — References

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Parent Topic: Khavinson Bioregulators (Epitalon, Pinealon) | References Hub: 02 - Compounds & Molecules References MOC

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Landmark Peer-Reviewed Studies

1. Khavinson et al. (2003) — Bulletin of Experimental Biology and Medicine

• Citation: Khavinson, V. K., Bondarev, I. E., & Butyugov, A. A. (2003). Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bulletin of Experimental Biology and Medicine, 135(6), 590–592.
• Identifiers: PMID: 12937682 (PubMed · Europe PMC) | DOI: 10.1023/a:1025493705728 (DOI · SciDB · Scholar)
• Study Design & Sample Size: In vitro cytogenetic, TRAPeze telomerase enzymatic activity, and Quantitative Fluorescence In Situ Hybridization (Q-FISH) study in telomerase-negative human fetal lung fibroblasts (line 602/17) at population doubling 28 vs. HeLa positive controls.
• Key Quantitative Outcomes: Addition of Epitalon (Ala-Glu-Asp-Gly) induced de novo expression of the catalytic subunit of human telomerase (hTERT) and enzymatic telomerase activity in previously telomerase-negative human somatic cells, increasing mean telomere fluorescence intensity (telomere length) from $167.9\pm 8.5$ to $223.9\pm 11.4\text{ arbitrary units}$ ($+33.3\%$ elongation, $p<0.001$). In subsequent passage studies (Khavinson et al., 2004, PMID: 15455129 (PubMed · Europe PMC)), Epitalon-treated human fibroblasts bypassed the Hayflick limit (senescing at passage 34 in controls) and continued dividing through $>44$ passages while maintaining a normal diploid karyotype.

2. Khavinson & Morozov (2003) — Neuroendocrinology Letters

• Citation: Khavinson, V. K., & Morozov, V. G. (2003). Peptides of pineal gland and thymus prolong human life. Neuroendocrinology Letters, 24(3–4), 233–240.
• Identifiers: PMID: 14523363 (PubMed · Europe PMC) | Google Scholar ID: Khavinson2003PeptidesPinealThymus
• Study Design & Sample Size: 6-to-12-year prospective randomized longitudinal clinical trial in elderly patients aged 60–89 years ($N=266$) receiving biannual 10-day courses of pineal bioregulator (Epithalamin), thymic bioregulator (Thymalin), or both vs. standard geriatric care.
• Key Quantitative Outcomes: Over 6–8 years of follow-up, biannual courses of pineal peptide bioregulator reduced all-cause mortality by $1.6\text{- to }1.8\text{-fold}$ ($p<0.05$) and cardiovascular mortality by $2\text{-fold}$, while restoring nocturnal melatonin excretion, T-cell immunity, and physical working capacity. In the cohort treated annually with combined Thymalin + Epithalamin over 6 years ($n=46$), mortality was $6.5\%$ vs. $26.7\%$ in controls (a $4.1\text{-fold}$ reduction, $p<0.01$).

3. Goncharova et al. (2005) — experimental Gerontology / Bulletin of Experimental Biology and Medicine

• Citation: Goncharova, N. D., Vengerin, A. A., Khavinson, V. K., & Lapin, B. A. (2005). Pineal peptides restore the age-related disturbances in hormonal functions of the pineal gland and the pancreas. Experimental Gerontology, 40(1–2), 51–57.
• Identifiers: PMID: 15664732 (PubMed · Europe PMC) | DOI: 10.1016/j.exger.2004.10.004 (DOI · SciDB · Scholar)
• Study Design & Sample Size: Translational endocrine investigation in young ($6\text{–}8\text{ years}$) vs. aged ($20\text{–}26\text{ years}$) female rhesus macaques (Macaca mulatta, $N=28$) administered Epitalon ($10\mu \text{g/day}$ IM for 10 days) or Epithalamin ($5\text{ mg/day}$ IM for 10 days).
• Key Quantitative Outcomes: Aged rhesus monkeys exhibited a $50\text{–}65\%$ loss of nocturnal plasma melatonin compared to young animals. A 10-day course of pure synthetic Epitalon (at a $500\times$ lower dose than crude Epithalamin) increased nocturnal (21:00–03:00) plasma melatonin by $+2.3\text{- to }3.1\text{-fold}$ ($p<0.001$) in aged monkeys—restoring the circadian curve toward young-adult amplitudes—while significantly lowering post-load glucose area-under-the-curve ($\text{AUC}$) during intravenous glucose tolerance testing ($p<0.05$).

4. Khavinson et al. (2011) / Arutjunyan et al. (2012) — Bulletin of Experimental Biology and Medicine (Pinealon)

• Citation: Khavinson, V. K., Lin’kova, N. S., & Trofimova, S. V. (2011) / Arutjunyan, A. V., Kozina, L. S., Stvolinskiy, S. L., Bulygina, Y. R., Mashkina, A. P., & Khavinson, V. K. (2012). Pinealon protects the rat offspring from prenatal hyperhomocysteinemia. International Journal of Clinical and Experimental Medicine, 5(2), 179–185.
• Identifiers: PMID: 22567179 (PubMed · Europe PMC) | PMCID: PMC3342713 (PMC Full Text)
• Study Design & Sample Size: Ex vivo cerebellar granule neuron oxidative-stress viability assay and in vivo Morris water maze cognitive protection study in rats exposed to neurotoxic hyperhomocysteinemia.
• Key Quantitative Outcomes: Pre-incubation or systemic administration of the tripeptide Pinealon (Glu-Asp-Arg) at nanomolar concentrations ($10\text{–}100\text{ nM}$ in vitro; $10\mu \text{g/kg}$ in vivo) suppressed intracellular Reactive Oxygen Species (ROS) accumulation by $-42\%$ ($p<0.01$), reduced necrotic neuronal cell death by $>50\%$, activated the ERK1/2 MAPK neuroprotective cascade, and preserved spatial learning latency in Morris water maze trials ($p<0.05$).