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DOI: 10.1055/a-2117-9426
Anthelmintic Activities of Extract and Ellagitannins from Phyllanthus urinaria against Caenorhabditis elegans and Zoonotic or Animal Parasitic Nematodes
Supported by: Deutsche Forschungsgemeinschaft 423277515; HE1642/12-1Supported by: Deutsche Forschungsgemeinschaft 423277515; LI 793/16-1
Supported by: Deutsche Forschungsgemeinschaft 423277515; STR 1171/17-1


Abstract
The aerial parts of Phyllanthus urinaria are used in traditional medicine in West Africa against helminthiasis, but their anthelmintic potential has not been evaluated until now. Within the current study, a hydroacetonic extract (AWE) and fractions and isolated ellagitannins from P. urinaria were, therefore, tested in vitro against Caenorhabditis elegans and the larvae of the animal parasites Toxocara canis, Ascaris suum, Ancylostoma caninum, and Trichuris suis. Compounds 1 – 13, mainly representing ellagitannins, were isolated using different chromatographic methods, and their structures were elucidated by HR-MS and 1H/13C-NMR. AWE exerted concentration-dependent lethal effects (LC50 of 2.6 mg/mL) against C. elegans and inhibited larval migration of all animal parasites tested (T. suis L1 IC50 24.3 µg/mL, A. suum L3 IC50 35.7 µg/mL, A. caninum L3 IC50 112.8 µg/mL, T. canis L3 IC50 1513.2 µg/mL). The anthelmintic activity of AWE was mainly related to the polar, tannin-containing fractions. Geraniin 1, the major ellagitannin in the extract, showed the strongest anthelmintic activity in general (IC50 between 0.6 and 804 µM, depending on parasite species) and was the only compound active against A. caninum (IC50 of 35.0 µM). Furosin 9 was least active despite structural similarities to 1. Among the parasites tested, Trichuris suis L1 larvae turned out to be most sensitive with IC50 of 0.6, 6.4, 4.0, 4.8, and 2.6 µM for geraniin 1, repandusinic acid A 3, punicafolin 8, furosin 9, and phyllanthusiin A 10, respectively.
* Contributed equally, shared senior authorship.
Supporting Information
- Supporting Information
Supplementary data indicate details of the fractionation procedure and of the plant material.
Publication History
Received: 17 March 2023
Accepted after revision: 20 June 2023
Article published online:
17 July 2023
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