American Society of Hirudotherapy

Comparative Transcriptomics of Three Hirudo Species

Cross-species salivary gland gene expression revealing conserved and divergent bioactive pathways

Last Updated: March 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Genomics & ProteomicsSalivary PharmacologyBabenko VV et al. · BMC Genomics, 2020

Summary

Comparative transcriptomic analysis of salivary gland cells from three Hirudo species (H. medicinalis, H. verbana, H. orientalis). Identified conserved core bioactive gene families shared across species and species-specific transcript variants, providing insight into the evolution of the leech salivary pharmacopeia.

Why This Matters for Hirudotherapy

Clinically important because H. verbana is the predominant species used in Western medical practice while most historical research focused on H. medicinalis. Understanding which bioactive pathways are conserved vs. divergent helps validate cross-species extrapolation of clinical evidence.

Citation

Comparative Transcriptomics of Three Hirudo Species: Insights into Evolution of Salivary Proteins

Babenko VV et al. · BMC Genomics, 2020

Added to ASH library: March 18, 2026 · Site last updated: March 18, 2026

This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.

Comparative Transcriptomics of Three Hirudo Species | ASH