Proteinase inhibitors from the medicinal leech Hirudo medicinalis
Research article published in Biochemistry. Biokhimiia (2001)
Abstract
The medicinal leech Hirudo medicinalis produces various types of proteinase inhibitors: bdellins (inhibitors of trypsin, plasmin, and acrosin), hirustasin (inhibitor of tissue kallikrein, trypsin, alpha-chymotrypsin, and granulocyte cathepsin G), tryptase inhibitor, eglins (inhibitors of alpha-chymotrypsin, subtilisin, and chymasin and the granulocyte proteinases elastase and cathepsin G), inhibitor of factor Xa, hirudin (thrombin inhibitor), inhibitor of carboxypeptidase, and inhibitor of complement component C1s. This review summarizes data on their primary and tertiary structures, action mechanisms, and biological activities.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Summary
The medicinal leech Hirudo medicinalis produces various types of proteinase inhibitors: bdellins (inhibitors of trypsin, plasmin, and acrosin), hirustasin (inhibitor of tissue kallikrein, trypsin, alpha-chymotrypsin, and granulocyte cathepsin G), tryptase inhibitor, eglins (inhibitors of alpha-chymotrypsin, subtilisin, and chymasin and the granu...
Why This Matters for Hirudotherapy
This review summarizes published data on proteinase inhibitors produced by Hirudo medicinalis—including bdellins, hirustasin, eglins, hirudin, and inhibitors of factor Xa, carboxypeptidase, tryptase, and complement component C1s—covering their primary and tertiary structures, action mechanisms, and biological activities. These inhibitors target a range of proteases such as thrombin, plasmin, trypsin, elastase, cathepsin G, tissue kallikrein, and C1s, documenting the molecular diversity of bioactive proteins characterized from a medicinal leech species. The article is directly relevant to the biochemical characterization of leech-derived protease inhibitors, consolidating structural and mechanistic information across multiple inhibitor families. As a review, it presents no new experimental data or clinical findings; its value lies in organizing existing knowledge of these characterized molecules rather than providing original research outcomes.
Citation
Proteinase inhibitors from the medicinal leech Hirudo medicinalis.
Baskova I, Zavalova L · Biochemistry. Biokhimiia, 2001
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