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Does in vitro and in vivo exposure to medicinal herbs cause structural cuticular changes in Haemonchus contortus?

M. Komáromyová

M. Komáromyová

Institute of Parasitology, Slovak Academy of SciencesKošice, Slovakia
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Komáromyová, M.
, 
D. Barčák

D. Barčák

Institute of Parasitology, Slovak Academy of SciencesKošice, Slovakia
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Barčák, D.
, 
A. Königová

A. Königová

Institute of Parasitology, Slovak Academy of SciencesKošice, Slovakia
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Königová, A.
, 
M. Urda Dolinská

M. Urda Dolinská

Institute of Parasitology, Slovak Academy of SciencesKošice, Slovakia
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Urda Dolinská, M.
 and 
M. Várady

M. Várady

Institute of Parasitology, Slovak Academy of SciencesKošice, Slovakia
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Várady, M.
  
Dec 17, 2022
Does in vitro and in vivo exposure to medicinal herbs cause structural cuticular changes in Haemonchus contortus?'s Cover Image
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Article Category: Research Article
Published Online: Dec 17, 2022
Page range: 265 - 274
Received: May 16, 2022
Accepted: Aug 30, 2022
DOI: https://doi.org/10.2478/helm-2022-0023
Keywords
© 2022 M. Komáromyová, D. Barčák, A. Königová, M. Urda Dolinská, M. Várady, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Scanning electron photomicrographs of Haemonchus contortus from the in vivo experimental groups. H1–H4 depict specimens collected from lambs fed a diet enriched with a Herbmix extract, and C1–C4 depict specimens from the control animals. H1 and C1, cephalic end of the body, both females; H2 and C2, region near the cervical papillae, both females; H3 and C3, vulvar region of the body, both females; H4 and C4, posterior end with the copulatory bursa, both males. Note the cephalic end of the female body (C1) and the posterior part of the male body (H4), with several artificial folds (asterisk), small protuberances (arrowhead) in the region anterior to the base of a cervical papilla (H2) and weak ridges (arrow) on the cuticle in the vulvar region (H3).
Scanning electron photomicrographs of Haemonchus contortus from the in vivo experimental groups. H1–H4 depict specimens collected from lambs fed a diet enriched with a Herbmix extract, and C1–C4 depict specimens from the control animals. H1 and C1, cephalic end of the body, both females; H2 and C2, region near the cervical papillae, both females; H3 and C3, vulvar region of the body, both females; H4 and C4, posterior end with the copulatory bursa, both males. Note the cephalic end of the female body (C1) and the posterior part of the male body (H4), with several artificial folds (asterisk), small protuberances (arrowhead) in the region anterior to the base of a cervical papilla (H2) and weak ridges (arrow) on the cuticle in the vulvar region (H3).

Fig. 2

Dose-response relationship of the Herbmix aqueous extract against Haemonchus contortus in the EHT.
Dose-response relationship of the Herbmix aqueous extract against Haemonchus contortus in the EHT.

Fig. 3

Scanning electron photomicrographs of Haemonchus contortus from the in vitro experimental groups. H1–H3 depict specimens treated with the Herbmix extract diluted in PBS, and C1–C3 depict specimens from the control group kept in PBS. H1 and C1, cephalic end of the body; H2 and C2, region around a cervical papilla; H3 and C3, vulvar region with a lateral button. Note the slightly sinuous physiological longitudinal ridges (arrows), weak transverse wrinkles (arrowheads) and artifacts of sample preparation (asterisks).
Scanning electron photomicrographs of Haemonchus contortus from the in vitro experimental groups. H1–H3 depict specimens treated with the Herbmix extract diluted in PBS, and C1–C3 depict specimens from the control group kept in PBS. H1 and C1, cephalic end of the body; H2 and C2, region around a cervical papilla; H3 and C3, vulvar region with a lateral button. Note the slightly sinuous physiological longitudinal ridges (arrows), weak transverse wrinkles (arrowheads) and artifacts of sample preparation (asterisks).

Hatching and ovicidal activity at the concentrations of the Herbmix aqueous extract tested in the EHT_

Herbmix concentration (mg/mL) Ovicidal effect (%) Hatching (%) p value
25 83 17 < 0.001
12.5 71 29 < 0.001
6.25 45 54 < 0.001
3.125 34 66 < 0.001
1.563 15 85 < 0.001
Control 1 99 -
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