American Society of Hirudotherapy

Protein mapping of the salivary complex from a hematophagous leech

Proteomics study published in OMICS: A Journal of Integrative Biology (2005)

Last Updated: June 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Preclinical (animal)Genomics & ProteomicsSalivary PharmacologyRicci-Silva ME et al. · OMICS, 2005

Abstract

The salivary complex of leeches contains many components able to modulate physiological mechanisms, such as coagulation and fibrinolysis, and it is composed by the salivary glands and proboscis, encompassing two different proteomes. The bidimensional electrophoretic pattern of the salivary complex from the Haementeria depressa leech revealed a total of 352 spots, 103 in common with the muscular tissue and 249 exclusive from the salivary complex as detected by silver staining; these spots showed isoelectric points from 3.5 to 9.5 and covered an apparent molecular weight range from 10 to 105 kDa. The following isoforms of proteins were identified by mass spectrometry analysis: antiplatelet protein, myohemerythrin and carbonic anhydrase. Since the leeches were not fed for about 2-3 months to stimulate the secretion of proteins that facilitates the blood metabolism, these most abundant proteins in the salivary complex excised from leeches, are expected to play a role during feeding and might have some anti-hemostatic properties. Furthermore, by zymography, a gelatinolytic and a fibrinolytic protein were identified.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal ArticleResearch Support, Non-U.S. Gov't
Indexed MeSH termsAmino Acid SequenceAnimalsCarbonic AnhydrasesElectrophoresis, Gel, Two-DimensionalHemerythrinLeechesMolecular Sequence DataPeptide MappingSalivary GlandsSalivary Proteins and PeptidesSequence Homology, Amino AcidSpectrometry, Mass, Electrospray Ionization

Summary

Two-dimensional gel electrophoresis and mass-spectrometric mapping of hematophagous leech salivary complex proteins — identifies novel anticoagulants and adhesion modulators.

Why This Matters for Hirudotherapy

Using 2D electrophoresis and mass spectrometry, this study mapped the salivary complex proteome of the hematophagous leech Haementeria depressa, identifying isoforms of antiplatelet proteins, myohemerythrin, and carbonic anhydrase. Researchers also detected specific gelatinolytic and fibrinolytic activities, which are crucial for the leech's ability to maintain blood flow during feeding. Characterizing these antihemostatic and fibrinolytic components advances our understanding of leech saliva's complex pharmacology, directly benefiting ASH's research interests. The caveat is that the study is an exploratory in-vitro proteomic analysis; the therapeutic potential and safety of these specific H. depressa proteins in human medicine remain entirely unassessed.

Citation

Protein mapping of the salivary complex from a hematophagous leech.

Ricci-Silva ME et al. · OMICS, 2005

DOI

Added to ASH library: May 27, 2026 · Site last updated: June 18, 2026

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