Immunomodulatory

Thymalin

Research Reagent · Laboratory Use Only

Quick Answer

What is the difference between Thymalin and Thymulin?

Thymalin is a polypeptide complex extracted from bovine thymus tissue and used clinically in Russia for immunomodulation. Thymulin is a separate, synthetic nonapeptide. Despite the similar name, they have different compositions and mechanisms. Thymalin restores CD4+/CD8+ T-cell ratios in immunosenescent populations.

PMID12698495↗DOI10.1023/A:1023980032862↗⟳ Reconstitution Calculator
Scientific AbstractPMID 12698495 · 2003

Thymalin is a polypeptide complex extracted from calf thymus tissue, distinct in composition and mechanism from synthetic Thymulin. Research, largely from Russian and Eastern European literature, demonstrates Thymalin's effects on T-lymphocyte differentiation, restoration of CD4+/CD8+ ratios in immunosenescent populations, and modulation of cytokine profiles. Clinical investigation has focused on age-related immune dysfunction, chronic infectious diseases, and post-surgical immune recovery. Thymalin is approved for medical use in the Russian Federation but is not FDA-approved.

Source:10.1023/A:1023980032862
Mechanistic Research SummaryCurated from PubMed

This data is for laboratory research purposes only. Not for human or animal consumption.

What is Thymalin?

Thymalin is a polypeptide complex isolated from bovine thymus gland, distinct from the synthetic peptide Thymulin despite the similar name. It is approved in Russia for clinical immunomodulation but is not FDA-approved.

Mechanism of Action

Thymalin acts on T-lymphocyte populations, supporting maturation of CD4+ helper and CD8+ cytotoxic T-cell subsets and restoring physiological ratios in immunosenescent populations. Cytokine modulation includes shifts in IFN-γ, IL-2, and IL-4.

Observed Laboratory Results

  • CD4+/CD8+ ratio restoration in older adult populations
  • T-cell differentiation support in immunosenescent models
  • Cytokine profile normalization in chronic infection models
  • Distinct from synthetic Thymulin in composition and mechanism
Clinical Research ParametersHuman Study Registry

No registered clinical trials or indexed human study data currently available for Thymalin via ClinicalTrials.gov or PubMed. This compound may be at preclinical or early research stages.

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Research Compliance Notice

All data presented on this page is for laboratory research purposes only. Thymalin is referenced here as a research reagent. This page does not constitute medical advice, clinical guidance, or endorsement of any compound for human or animal use. All referenced studies are available via PubMed (PMID: 12698495) and the DOI-linked journal publication. Researchers must consult applicable institutional and regulatory frameworks before conducting any protocols.

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