Blood parameters and immune responses during haemonchosis

Article Details: Received: 2020-10-06 | Accepted: 2020-11-27 | Available online: 2021-01-31https://doi.org/10.15414/afz.2021.24.mi-prap.29-32 The aim of this experiment was to determine the effect of medicinal plants (Artemisia absinthium and Malva sylvestris) as feed supplements on blood parameters, and local immune responses in the abomasum of Haemonchus contortus infected lambs. Twenty-four lambs were infected orally with 5000 L3 larvae of H. contortus and subsequently randomly divided into four groups: unsupplemented animals (UNS), animals with A. absinthium (ART), animals with M. sylvestris (MAL), and animals with a mix of two plants (ARTMAL). During the experiment, samples of blood were taken for evaluation of hemoglobin and albumin levels. All animals were humanely killed after 75 days of the experiment, and abomasum tissue samples were taken for histopathology. The hemoglobin concentration in the blood was influenced by time (p< 0.001) and in all groups decreased until day 45. The serum albumin levels were influenced by treatment (p< 0.05) and time (p< 0.001) and in all groups occurred reduction until the end of the experiment compared to day 15. The number of plasma cells was higher in ARTMAL compared to MAL (p< 0.05). UNS and ART had significantly higher numbers of mast cells compared to MAL (p< 0.01 and 0.05, respectively). The regeneration of abomasal tissue was most frequent in ARTMAL. The results showed that dietary supplementation by A. absinthium and M. sylvestris did not positively affected blood parameters but influenced local immune response in the abomasum of H. contortus infected sheep.Keywords: Haemonchus contortus, sheep, hemoglobin, abomasum, local immune responseReferencesBesier, R. et al. (2016). The Pathophysiology, Ecology and Epidemiology of Haemonchus contortus. In Gasser, RB and Samson-Himmelstjerna, G. Haemonchus contortus- Past, present and future trends. (1. ed.). London: Elsevier Ltd (pp. 95-143).Hoste, H. et al. (2016). Interactions between nutrition and infections with Haemonchus contortus and related gastrointestinal nematodes in small ruminants. Advances in Parasitology, 93, 239–351. https://doi.org/10.1016/bs.apar.2016.02.025 McRae, KM. et al. (2015). The host immune response to gastrointestinal nematode infection in sheep. Parasite Immunology, 37(12), 605-613. https://doi.org/10.1111/pim.12290.Mravčáková, D. et al. (2019). Natural chemotherapeutic alternatives for controlling of haemonchosis in sheep. BMC Veterinary Research, 15, 1-13. https://doi.org/10.1186/s12917-019-2050-2Rouatbi, M. et al. (2016). Effect of the infection with the nematode Haemonchus contortus (Strongylida: Trichostrongylidae) on the haematological, biochemical, clinical and reproductive traits in rams. The Onderstepoort Journal of Veterinary Research, 83(1), 1-8. http://dx.doi.org/10.4102/ojvr.v83i1.1129Váradyová, Z. et al. (2018). Effects of herbal nutraceuticals and/or zinc against Haemonchus contortus in lambs experimentally infected. BMC Veterinary Research, 14(1), 78. https://doi.org/10.1186/s12917-018-1405-4Villalba, JJ. Et al. (2017). Phytochemicals in animal health: Diet selection and trade-offs between costs and benefits. Proceedings of the Nutrition Society, 76(2), 113-121. https://doi.org/10.1017/S002966511600071

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Testing antioxidant properties of selected acetylcholinesterase inhibitors

Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology & Toxicology Student: Jana Kucková Supervisor: PharmDr. Marie Vopršalová, CSc. Title of diploma thesis: Testing antioxidant properties of selected acetylcholinesterase inhibitors Very widespread Alzheimer's disease is typical by a complex pathology. Its causality is not clearly understood. There is increasing discussion due to the negative impact of free radicals on this disease formation. There are testing new substances that have also antioxidant properties, in addition to their classical effects. The aim of this diploma thesis is spectrophotometric testing of antioxidant properties of selected acetylcholinesterase inhibitors. It is based on DPPH test where the presence of antioxidants with antiradical activity causes the reduction of the color stable 2,2-diphenyl-1- picrylhydrazyl (DPPH) radical to a colorless molecule. The principle of the method is the measurement of decrease in absorbance (decolorization) of selected substances that are directly proportional to the antioxidant (antiradical) efficacy of the analyzed inhibitors. It focuses on twelve samples, Phenothiazine, which is the leader structure of new inhibitors synthesis, and two standards. Antioxidant activity is expressed as the effective..

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Testování antioxidačních vlastností vybraných inhibitorů acetylcholinesterasy

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