TY  - JOUR
AU  - Trailović, Saša M.
AU  - Rajković, Milan
AU  - Marjanović, Đorđe
AU  - Neveu, Cédric
AU  - Charvet, Claude L.
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2232
AB  - Parascaris sp. is the only ascarid parasitic nematode in equids and one of the most threatening infectious organisms in horses. Only a limited number of compounds are available for treatment of horse helminthiasis, and Parascaris sp. worms have developed resistance to the three major anthelmintic families. In order to overcome the appearance of resistance, there is an urgent need for new therapeutic strategies. The active ingredients of herbal essential oils are potentially effective antiparasitic drugs. Carvacrol is one of the principal chemicals of essential oil from Origanum, Thymus, Coridothymus, Thymbra, Satureja and Lippia herbs. However, the antiparasitic mode of action of carvacrol is poorly understood. Here, the objective of the work was to characterize the activity of carvacrol on Parascaris sp. nicotinic acetylcholine receptor (nAChR) function both in vivo with the use of worm neuromuscular flap preparations and in vitro with two-electrode voltage-clamp electrophysiology on nAChRs expressed in Xenopus oocytes. We developed a neuromuscular contraction assay for Parascaris body flaps and obtained acetylcholine concentration-dependent contraction responses. Strikingly, we observed that 300 µM carvacrol fully and irreversibly abolished Parascaris sp. muscle contractions elicited by acetylcholine. Similarly, carvacrol antagonized acetylcholine-induced currents from both the nicotine-sensitive AChR and the morantel-sensitive AChR subtypes. Thus, we show for the first time that body muscle flap preparation is a tractable approach to investigating the pharmacology of Parascaris sp. neuromuscular system. Our results suggest an intriguing mode of action for carvacrol, being a potent antagonist of muscle nAChRs of Parascaris sp. worms, which may account for its antiparasitic potency.
T2  - Pharmaceuticals
T1  - Action of Carvacrol on Parascaris sp. and Antagonistic Effect on Nicotinic Acetylcholine Receptors
VL  - 14
IS  - 6
SP  - 505
DO  - 10.3390/ph14060505
ER  - 

@article{
author = "Trailović, Saša M. and Rajković, Milan and Marjanović, Đorđe and Neveu, Cédric and Charvet, Claude L.",
year = "2021",
abstract = "Parascaris sp. is the only ascarid parasitic nematode in equids and one of the most threatening infectious organisms in horses. Only a limited number of compounds are available for treatment of horse helminthiasis, and Parascaris sp. worms have developed resistance to the three major anthelmintic families. In order to overcome the appearance of resistance, there is an urgent need for new therapeutic strategies. The active ingredients of herbal essential oils are potentially effective antiparasitic drugs. Carvacrol is one of the principal chemicals of essential oil from Origanum, Thymus, Coridothymus, Thymbra, Satureja and Lippia herbs. However, the antiparasitic mode of action of carvacrol is poorly understood. Here, the objective of the work was to characterize the activity of carvacrol on Parascaris sp. nicotinic acetylcholine receptor (nAChR) function both in vivo with the use of worm neuromuscular flap preparations and in vitro with two-electrode voltage-clamp electrophysiology on nAChRs expressed in Xenopus oocytes. We developed a neuromuscular contraction assay for Parascaris body flaps and obtained acetylcholine concentration-dependent contraction responses. Strikingly, we observed that 300 µM carvacrol fully and irreversibly abolished Parascaris sp. muscle contractions elicited by acetylcholine. Similarly, carvacrol antagonized acetylcholine-induced currents from both the nicotine-sensitive AChR and the morantel-sensitive AChR subtypes. Thus, we show for the first time that body muscle flap preparation is a tractable approach to investigating the pharmacology of Parascaris sp. neuromuscular system. Our results suggest an intriguing mode of action for carvacrol, being a potent antagonist of muscle nAChRs of Parascaris sp. worms, which may account for its antiparasitic potency.",
journal = "Pharmaceuticals",
title = "Action of Carvacrol on Parascaris sp. and Antagonistic Effect on Nicotinic Acetylcholine Receptors",
volume = "14",
number = "6",
pages = "505",
doi = "10.3390/ph14060505"
}

Trailović, S. M., Rajković, M., Marjanović, Đ., Neveu, C.,& Charvet, C. L.. (2021). Action of Carvacrol on Parascaris sp. and Antagonistic Effect on Nicotinic Acetylcholine Receptors. in Pharmaceuticals, 14(6), 505.
https://doi.org/10.3390/ph14060505

Trailović SM, Rajković M, Marjanović Đ, Neveu C, Charvet CL. Action of Carvacrol on Parascaris sp. and Antagonistic Effect on Nicotinic Acetylcholine Receptors. in Pharmaceuticals. 2021;14(6):505.
doi:10.3390/ph14060505 .

Trailović, Saša M., Rajković, Milan, Marjanović, Đorđe, Neveu, Cédric, Charvet, Claude L., "Action of Carvacrol on Parascaris sp. and Antagonistic Effect on Nicotinic Acetylcholine Receptors" in Pharmaceuticals, 14, no. 6 (2021):505,
https://doi.org/10.3390/ph14060505 . .

TY  - JOUR
AU  - Jakovljević, Goran
AU  - Lazarević, Miodrag
AU  - Mirilović, Milorad
AU  - Milovanović, Aleksandar
AU  - Apić, Jelena
AU  - Šefer, Dragan
AU  - Nedić, Svetlana
AU  - Vakanjac, Slobodanka
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2267
AB  - This study aimed to assess the influence of different concentrations of zinc (Zn), lead (Pb), mercury (Hg) and cadmium (Cd) found in the feed and water provided to bulls on the concentrations of these metals in cryopreserved bull semen, and to determine their influence onto semen quality parameters. Correlations between heavy metal concentrations in the semen and the quality parameters of semen as estimated by computer-assisted sperm analysis (CASA) and flow cytometry (FC) methods were determined. A total of 40 cryopreserved semen samples originating from bulls housed in 4 different centers for artificial insemination (A, B, C and D) were examined, making a total of 160 samples. The concentrations of metals and semen quality parameters were determined in cryopreserved semen of 10 bulls from each center, namely 4 samples from each bull. Concentrations of Zn, Pb, Hg and Cd in hay and concentrated feed were within the allowed limits as proposed by the National Research Council (NRC, 2000). A strong negative correlation was detected between curvilinear velocity (VCL) and Zn concentrations in the semen (P < 0.01; r = -0.772) in group D, and a positive correlation of VCL with Pb concentrations (P < 0.05 and r = 0.718) in group B. Mercury concentrations in cryopreserved semen correlated negatively to the percent of live sperm cells with intact acrosomes (V/IA: P < 0.05; r = -0.640) and positively with the percent of dead sperm cells with damaged acrosomes (D/DA: P < 0.01; r = 0.766) in group D. This finding confirms the hypothesis that Hg, even at low concentrations, may cause acrosome damage.
AB  - Cilj rada bio je da se ispita uticaj različitih koncentracija cinka (Zn), olova (Pb), žive
(Hg) i kadmijuma (Cd) iz hrane i vode na koncentracije ovih metala u duboko zamrznutom semenu nakon otapanja i da se ispita njihov uticaj na parametre kvaliteta
semena. Korelacije između koncentracije teških metala u semenu i parametra kvaliteta semena su određivane nakon ispitivanja semena kompjuterski asistiranom analizom
semena (eng. computer-assisted sperm analysis - CASA) i protočnom citometrijom
(eng. flow cytometry - FC).
Iz 4 različita centra za veštačko osemenjavanje (A, B, C i D) ispitivano je po 40 uzoraka duboko zamrznutog semena bikova, što čini ukupno 160 uzoraka. Koncentracije
metala i parametri kvaliteta semena su određivani u duboko zamrznutom semenu od
10 bikova iz svakog centra, odnosno 4 uzorka od svakog bika. Koncentracije Zn, Pb,
Hg i Cd u senu i koncentrovanim hranivima bile su ispod propisanih dozvoljenih
vrednosti Nacionalnog Istraživačkog Veća (eng. National Research Council - NRC,
2000). Jaka negativna korelacija uočena je između krivolinijske brzine spermatozoida
(eng. curvilinear velocity - VCL) i koncentracije Zn u semenu (P < 0.01; r = -0.772) u
grupi D, i pozitivna korelacija između VCL i koncentracije Pb (P < 0.05 and r = 0.718)
u grupi B. Koncentracija žive u duboko zamrznutom semenu negativno je korelirala
sa procentom živih spermatozoida sa neoštećenim akrozomom (eng. live sperm cells
with intact acrosomes - V/IA: P < 0.05; r = -0.640) i pozitivno sa procentom mrtvih
spermatozoida sa oštećenim akrozomom (eng. dead sperm cells with damaged acrosomes - D/DA: P < 0.01; r = 0.766) u grupi D. Ovi rezultati potvrđuju hipotezu da Hg,
čak i u niskim koncenracijama može da prouzrokuje oštećenje akrozoma.
PB  - Fakultet veterinarske medicine
T2  - Acta veterinaria-Beograd
T1  - The influence of zinc and heavy metals in feed and water on the quality of cryopreserved bull semen
T1  - Uticaj cinka i teških metala iz hrane i vode na kvalitet duboko zamrznutog semena bikova
VL  - 71
IS  - 3
SP  - 326
EP  - 343
DO  - 10.2478/acve-2021-0028
ER  - 

@article{
author = "Jakovljević, Goran and Lazarević, Miodrag and Mirilović, Milorad and Milovanović, Aleksandar and Apić, Jelena and Šefer, Dragan and Nedić, Svetlana and Vakanjac, Slobodanka",
year = "2021",
abstract = "This study aimed to assess the influence of different concentrations of zinc (Zn), lead (Pb), mercury (Hg) and cadmium (Cd) found in the feed and water provided to bulls on the concentrations of these metals in cryopreserved bull semen, and to determine their influence onto semen quality parameters. Correlations between heavy metal concentrations in the semen and the quality parameters of semen as estimated by computer-assisted sperm analysis (CASA) and flow cytometry (FC) methods were determined. A total of 40 cryopreserved semen samples originating from bulls housed in 4 different centers for artificial insemination (A, B, C and D) were examined, making a total of 160 samples. The concentrations of metals and semen quality parameters were determined in cryopreserved semen of 10 bulls from each center, namely 4 samples from each bull. Concentrations of Zn, Pb, Hg and Cd in hay and concentrated feed were within the allowed limits as proposed by the National Research Council (NRC, 2000). A strong negative correlation was detected between curvilinear velocity (VCL) and Zn concentrations in the semen (P < 0.01; r = -0.772) in group D, and a positive correlation of VCL with Pb concentrations (P < 0.05 and r = 0.718) in group B. Mercury concentrations in cryopreserved semen correlated negatively to the percent of live sperm cells with intact acrosomes (V/IA: P < 0.05; r = -0.640) and positively with the percent of dead sperm cells with damaged acrosomes (D/DA: P < 0.01; r = 0.766) in group D. This finding confirms the hypothesis that Hg, even at low concentrations, may cause acrosome damage., Cilj rada bio je da se ispita uticaj različitih koncentracija cinka (Zn), olova (Pb), žive
(Hg) i kadmijuma (Cd) iz hrane i vode na koncentracije ovih metala u duboko zamrznutom semenu nakon otapanja i da se ispita njihov uticaj na parametre kvaliteta
semena. Korelacije između koncentracije teških metala u semenu i parametra kvaliteta semena su određivane nakon ispitivanja semena kompjuterski asistiranom analizom
semena (eng. computer-assisted sperm analysis - CASA) i protočnom citometrijom
(eng. flow cytometry - FC).
Iz 4 različita centra za veštačko osemenjavanje (A, B, C i D) ispitivano je po 40 uzoraka duboko zamrznutog semena bikova, što čini ukupno 160 uzoraka. Koncentracije
metala i parametri kvaliteta semena su određivani u duboko zamrznutom semenu od
10 bikova iz svakog centra, odnosno 4 uzorka od svakog bika. Koncentracije Zn, Pb,
Hg i Cd u senu i koncentrovanim hranivima bile su ispod propisanih dozvoljenih
vrednosti Nacionalnog Istraživačkog Veća (eng. National Research Council - NRC,
2000). Jaka negativna korelacija uočena je između krivolinijske brzine spermatozoida
(eng. curvilinear velocity - VCL) i koncentracije Zn u semenu (P < 0.01; r = -0.772) u
grupi D, i pozitivna korelacija između VCL i koncentracije Pb (P < 0.05 and r = 0.718)
u grupi B. Koncentracija žive u duboko zamrznutom semenu negativno je korelirala
sa procentom živih spermatozoida sa neoštećenim akrozomom (eng. live sperm cells
with intact acrosomes - V/IA: P < 0.05; r = -0.640) i pozitivno sa procentom mrtvih
spermatozoida sa oštećenim akrozomom (eng. dead sperm cells with damaged acrosomes - D/DA: P < 0.01; r = 0.766) u grupi D. Ovi rezultati potvrđuju hipotezu da Hg,
čak i u niskim koncenracijama može da prouzrokuje oštećenje akrozoma.",
publisher = "Fakultet veterinarske medicine",
journal = "Acta veterinaria-Beograd",
title = "The influence of zinc and heavy metals in feed and water on the quality of cryopreserved bull semen, Uticaj cinka i teških metala iz hrane i vode na kvalitet duboko zamrznutog semena bikova",
volume = "71",
number = "3",
pages = "326-343",
doi = "10.2478/acve-2021-0028"
}

Jakovljević, G., Lazarević, M., Mirilović, M., Milovanović, A., Apić, J., Šefer, D., Nedić, S.,& Vakanjac, S.. (2021). The influence of zinc and heavy metals in feed and water on the quality of cryopreserved bull semen. in Acta veterinaria-Beograd
Fakultet veterinarske medicine., 71(3), 326-343.
https://doi.org/10.2478/acve-2021-0028

Jakovljević G, Lazarević M, Mirilović M, Milovanović A, Apić J, Šefer D, Nedić S, Vakanjac S. The influence of zinc and heavy metals in feed and water on the quality of cryopreserved bull semen. in Acta veterinaria-Beograd. 2021;71(3):326-343.
doi:10.2478/acve-2021-0028 .

Jakovljević, Goran, Lazarević, Miodrag, Mirilović, Milorad, Milovanović, Aleksandar, Apić, Jelena, Šefer, Dragan, Nedić, Svetlana, Vakanjac, Slobodanka, "The influence of zinc and heavy metals in feed and water on the quality of cryopreserved bull semen" in Acta veterinaria-Beograd, 71, no. 3 (2021):326-343,
https://doi.org/10.2478/acve-2021-0028 . .