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In vitro evaluation of the effects of methanolic plant extracts on the embryonation rate of Ascaridia galli eggs

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Abstract

The present study aims to find efficient alternatives to synthetic anthelmintics among ethno-veterinary herbs. Ascaridia galli eggs isolated from the worm uterus were exposed in vitro to methanolic extracts (ME) of nine plant species such as Achillea millefolium (AM), Artemisia absinthium (AA), Artemisia vulgaris (AV), Cicerbita alpina (CA), Cichorium intybus (CI), Inula helenium (IH), Origanum vulgare (OV), Tanacetum vulgare (TV), Tanacetum parthenium (TP). Flubendazole (FL), 0.5% formalin with dimethylsulfoxide and Petri dishes without the addition of reagents were used as positive, negative and untreated control respectively. The effects of the different ME at concentrations 0.500, 0.325, 0.200 mg/ml were assessed on the embryonic development (ED) of the eggs in duplicate. Logit analysis was used to calculate EC50 values. A generalized linear mixed model, having plant species and concentration as fixed effect and day as repeated measure, was used to determine differences in ED. Estimated EC50 was the lowest for FL at 0.11 mg/ml. CA and TV followed with 0.27 mg/ml and 0.32 mg/ml. ED for FL was significantly lower (25%) than that of CA (47%). The analysis showed 0.5 mg/ml of the ME of CA and TV significantly affected the ED at 35% and 42% inhibitions respectively. The ED for all ME showed similar pattern i.e., relatively higher efficacy in the first experimental week compared to the rest of the experimental period. The effect from all multicomponent extracts is time and dose dependent. The plants have promising results in inhibiting ED, contributing to the identification of alternative anthelmintic treatments.

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Data availability

All data generated or analysed during this study are included in this published article (and its supplementary information file).

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Funding

The present study is part of the “HERBAL” project that has received funding from the GECT “Europe region (Euregio) Tirolo—Trentino—Alto Adige”, Interregional Project Network (IPN 119), Nr. 25/2018, 3rd call.

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Authors

Contributions

Ioanna Poulopoulou: Conceptualization, Methodology, Investigation, Resources, Analysis, Writing original draft, Review draft; Mark James Horgan: Resources, Review draft; Bianka Siewert: Resources, Methodology, Review draft; Michaela Siller: Resources; Luisa Palmieri: Resources, Review draft; Eftychia Martinidou: Resources; Stefan Martens: Review draft, Funding acquisition; Pietro Fusani: Resources, Review draft; Veronika Temml: Resources, Review draft; Hermann Stuppner: Review draft, Funding acquisition; Matthias Gauly: Conceptualization, Methodology, Review Draft, Project administration, Funding acquisition, Supervision.

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Correspondence to Ioanna Poulopoulou.

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The authors have no relevant financial or non-financial interests to disclose. The authors have no competing interests to declare that are relevant to the content of this article.

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No approval of research ethics committees was required to accomplish the goals of this study because experimental work was conducted using invertebrate species.

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Poulopoulou, I., Horgan, M.J., Siewert, B. et al. In vitro evaluation of the effects of methanolic plant extracts on the embryonation rate of Ascaridia galli eggs. Vet Res Commun 47, 409–419 (2023). https://doi.org/10.1007/s11259-022-09958-9

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  • DOI: https://doi.org/10.1007/s11259-022-09958-9

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