Morphological and anatomical deformities of Hirudo verbana after feeding: light and electron microscopic analysis
Anatomy study published in Microscopy and Microanalysis (2025)
Abstract
Leeches are widely used as model organisms in scientific studies and medical treatments. Medical leeches are hematophagous parasites that usually feed on the blood of their hosts. Some leeches show deformities, usually after feeding. This causes both medical and economic losses as it reduces the effectiveness of leeches in cultivation and medical treatment. The aim of this study was to investigate the effects of morphological deformations after feeding in Hirudo verbana, Carena 1820 (Annelida, Hirudinea), an important species in medical leech treatments. For this purpose, both histopathological and scanning electron microscopy examinations of starved and fed leeches were performed. The causes of deformities in medical leeches were found to be due to overfeeding, which caused cracks on the intestinal surface and therefore deterioration of the tissues. It is also thought that the immunological agents in the fed blood destroyed the medical leech tissue in these regions. In addition, it was determined that the cellular structure of the shaped blood elements stored in the cavity after feeding was preserved for a long time (months) without deterioration. It is certain that revealing the mechanism by which this occurs will inspire the preservation of blood for a long time in blood transfusion.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Resumen
Detailed light/EM microscopy of feeding-induced morphological changes in Hirudo verbana — important reference for leech-husbandry and post-feeding handling.
Por qué esto importa para la hirudoterapia
Este estudio utilizó microscopía óptica y microscopía electrónica de barrido para examinar las deformidades morfológicas y anatómicas en Hirudo verbana tras la alimentación, atribuyendo las deformidades a la sobrealimentación que causa grietas en la superficie intestinal y deterioro tisular, posiblemente agravado por agentes inmunológicos presentes en la sangre ingerida, y señalando que las células sanguíneas permanecieron preservadas en el intestino de la sanguijuela durante meses sin degradación. Para el ámbito de ASH, el estudio es relevante para la cría de sanguijuelas, la calidad del cultivo y la eficacia del tratamiento médico, y la observación de preservación sanguínea puede inspirar investigaciones relacionadas con la transfusión. No obstante, el trabajo es únicamente un análisis morfológico/histopatológico descriptivo, sin datos funcionales ni terapéuticos, y el mecanismo de preservación sanguínea permanece sin explicar; no es un estudio de resultados de hirudoterapia ni de actividad del secretoma.
Citación
Morphological and anatomical deformities of Hirudo verbana after feeding: light and electron microscopic analysis.
Ülger Ö et al. · Microscopy and microanalysis, 2025
Contexto clínico relacionado
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Añadido a la biblioteca ASH: May 27, 2026 · Última actualización del sitio: 18 de junio de 2026