American Society of Hirudotherapy

Investigation of the therapeutic effects of medicinal leech treatment on lower extremity ischemia-reperfusion injury

Basic science / preclinical published in Journal of complementary & integrative medicine (2026)

Last Updated: March 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Clinical TrialsÜnal K et al. · Journal of complementary & integrative medicine, 2026

Abstract

OBJECTIVES: This study aims to investigate the therapeutic effects of medical leech treatment (MLT) on ischemia/reperfusion (I/R) injuries in the lower extremities of rats. METHODS: A total of 18 Wistar Albino rats were used and randomly assigned to three groups: Sham (n=6), I/R (n=6), and MLT (n=6). The I/R group rats underwent I/R induction in the femoral artery using an atraumatic vascular clamp. The same was done for the MLT group, after which MLT was carried out on the gastrocnemius muscle region of each rat. Histopathological analysis of the tissue and biochemical analysis was performed on the serum and tissue samples of the rats of each group. RESULTS: According to the histopathological analysis, the scores of edema, degeneration, necrosis and inflammation of the MLT group were significantly lower than the I/R group (p<0.001). In the tissue and serum biochemical analysis, no statistically significant differences were detected among groups for interleukin-6 (IL-6), superoxide dismutase (SOD), calcitonin gene-related peptide (CGRP), nitric oxide (NO), tumor necrosis factor-α (TNF-α), hypoxia-inducible factor-1α (HIF-1α), ischemia-modified albumin (IMA), glutathione peroxidase (GPx), catalase (CAT) and endothelin-1 (EDN-1) levels. CONCLUSIONS: Although biochemical analysis results showed no significant differences among the groups, the histopathological analysis suggests notable clinical therapeutic effects of MLT in I/R models. Further research is warranted to substantiate these findings.

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

Publication typeJournal Article
Indexed MeSH termsAnimalsReperfusion InjuryRats, WistarLeechingLower ExtremityMaleRatsSuperoxide DismutaseHypoxia-Inducible Factor 1, alpha SubunitMuscle, SkeletalTumor Necrosis Factor-alphaInterleukin-6

Summary

This study aims to investigate the therapeutic effects of medical leech treatment (MLT) on ischemia/reperfusion (I/R) injuries in the lower extremities of rats.

Why This Matters for Hirudotherapy

Contributes clinical evidence for the therapeutic application of leech therapy.

Citation

Investigation of the therapeutic effects of medicinal leech treatment on lower extremity ischemia-reperfusion injury.

Ünal K et al. · Journal of complementary & integrative medicine, 2026

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.

Investigation of the therapeutic effects of medicinal leech treatment on lower extremity ischemia-reperfusion injury | ASH