Sociedad Americana de Hirudoterapia

Rivaroxaban

Oral Factor Xa inhibitor — FDA approved 2011. Conceptual descendant of antistasin/leech FXa research.

Estudiado off-labelLast updated: 2026-05-26 · Reviewed by ASH Editorial Board
Molecular weight of Rivaroxaban compared with other characterized leech-derived compoundsHementerin80 kDaHementin80 kDaHementin-Like Protein (HLP-1)80 kDaLeech Collagenase70 kDaHaemadipsa yanyuanensis Progr…70 kDaLeech Apyrase67 kDaCalin65 kDaHyaluronidase60 kDaAntithrombin III binding prot…58 kDaCollagenolytic Fibrinolysin55 kDaLeech Thrombospondin-Like Pro…50 kDaRivaroxaban0.4 kDa
Molecular weight (kilodaltons) of Rivaroxaban (highlighted) alongside other characterized leech salivary compounds. Smaller proteins/peptides generally diffuse and act faster.

Mechanistic Evidence Box

Studied off-label
Page type
Compound profile
Evidence type
Oral Factor Xa inhibitor — FDA approved 2011. Conceptual descendant of antistasin/leech FXa research.
Evidence level
FDA-cleared regulatory context
Drug vs leech
Synthetic analog
Safety domains
Bleeding

Clinical translation limit

Rivaroxaban is a chemically synthesized small-molecule Factor Xa inhibitor; it shares only the molecular target with leech antistasin and is not structurally derived from it. Its RCT evidence base (ROCKET AF) applies only to the drug, not to whole medicinal-leech therapy.

Molecular Profile

Category
Anticoagulant
Evidence tier
Tier A — FDA-approved derivative
Molecular weight
435.88 Da
Source species
Synthetic
Discovered
2008 · Bayer / Johnson & Johnson
PubChem CID
6433119
Derived FDA-approved drug
Xarelto (FDA approved July 2011)
Rivaroxaban molecular structure

Biological Targets

  • Factor Xa

Key Citations

  1. Patel MR et al. (ROCKET AF) (2011), N Engl J Med · PMID 21830957

Related Anticoagulant Compounds

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