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Peptide Database

Immune research

Thymalin (Thymus Extract): Research Overview

Peptide extract from calf thymus, studied in Russian immune and ageing research since the 1970s.

Also known as thymus extract · Thymalinum · Thymus Extract

Research use onlyStrongest evidence: study type not statedReviewed

What is Thymalin?

Thymalin is a natural peptide bioregulator derived from calf thymus gland, developed in the Soviet Union in the 1970s. It contains a mixture of thymic peptides that support immune restoration, anti-aging, and tissue regeneration.

What is Thymalin researched for?

  • Stimulates T-lymphocyte differentiation and activity for comprehensive immune system restoration.
  • Accelerates recovery of lymphocyte populations including CD4+, CD3+HLA-DR+, B-cells, and NK-cells.
  • 2.0-2.4 fold reduction in acute respiratory disease incidence in elderly patients.
  • Clinical studies showed 2.0-2.1 fold mortality reduction over 6-8 years in treated elderly.
  • Normalizes basic body functions and improves cardiovascular, endocrine, immune, and nervous systems.
  • When combined with Epithalamin for 6 years, mortality decreased 4.1 times vs control.
  • Faster reversal of lymphopenia and immune marker recovery in severe COVID-19 patients.
  • Tumor growth arrest and regression observed in over half of animals in sarcoma studies.
  • Normalizes thymus function during aging process.

How does Thymalin work?

Thymalin's immunoprotective action stems from short peptides (KE, EW, EDP) that specifically bind to double-stranded DNA and histone proteins to regulate gene expression. It stimulates differentiation and activity of T-lymphocytes, especially CD4+ and CD8+ cells, promotes cytokine regulation, enhances antigen response, and stimulates stem cell differentiation.

References

  1. The Use of Thymalin for Immunocorrection and Molecular Aspects of

    Biological Activity International Journal of Molecular Sciences · 2021

    Detailed molecular mechanisms of Thymalin's immunoprotective action through peptides KE, EW, EDP binding to DNA and histones.

  2. Peptides of pineal gland and thymus prolong human life

    Khavinson VKh, Morozov VG · Neuro endocrinology letters · 2003

    6-8 year study showed 2.0-2.1 fold mortality reduction with Thymalin; 4.1-fold when combined with Epithalamin.

    PMID 14523363

  3. Peptide Drug Thymalin Regulates Immune Status in Severe COVID-19 Older Patients

    Advances in Gerontology · 2021

    Faster lymphopenia reversal and improved recovery of CD4+, CD3+HLA-DR+, B-cells, and NK-cells in COVID-19.

  4. Effect of Thymalin on Tumor and Thymus in Activation Therapy

    Bulletin of Experimental Biology and Medicine · 2018

    Antitumor effects with tumor growth arrest in >50% of animals; growth suppressed by 78% in others.

Common questions

Can Thymalin prevent or reduce severe COVID-19?

Thymalin showed faster reversal of lymphopenia (low lymphocyte counts) and improved recovery of CD4+, CD3+HLA-DR+, B-cells, and NK-cells in severe COVID-19 patients. While not a cure, it may accelerate immune recovery in immunocompromised COVID patients, making it relevant during severe cases.

Is Thymalin the same as Thymalin extract or are there different formulations?

Thymalin is the standardized peptide extract mixture from calf thymus containing short peptides (KE, EW, EDP) that work synergistically. Different manufacturers may vary slightly in composition, but all authentic Thymalin contains these core immunoactive peptide components in similar ratios.

Why use Thymalin if Thymosin Alpha-1 is synthetic and more standardized?

Thymalin is a natural extract with multiple synergistic peptide components, while Thymosin Alpha-1 is a single synthetic peptide. Thymalin's broader spectrum may provide geroprotective and antitumor effects beyond Thymosin Alpha-1's immune focus. Combined use is compatible and may enhance outcomes in comprehensive protocols.