TY  - JOUR
AU  - Antonijević, Evica
AU  - Musilek, Kamil
AU  - Kuca, Kamil
AU  - Đukić-Ćosić, Danijela
AU  - Vučinić, Slavica
AU  - Antonijević, Biljana
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2655
AB  - As oxime-based structures are the only causal antidotes to organophosphate (OP)-inhibited acetylcholinesterase (AChE), the majority of studies on these have been directed towards their synthesis and testing. In this study, experimental bispyridinium oximes K027 and K203, which have shown promising results in the last decade of research, were examined in vivo for their therapeutic and reactivating ability in acute poisoning by the direct AChE-inhibitor dichlorvos (DDVP), used as a dimethyl OP structural model. Additionally, the efficacy of oximes K027 and K203 was compared with the efficacy of four oximes (pralidoxime, trimedoxime, obidoxime and HI-6), already used in efficacy experiments and human medicine. To evaluate therapeutic efficacy, groups of Wistar rats were treated with equitoxic doses of oximes (5% LD50, i.m.) and/or atropine (10 mg/kg, i.m.) immediately after s.c. DDVP challenge (4-6 doses). Using the same antidotal protocol, AChE activity was measured in erythrocytes, diaphragm and brain 60 min after s.c. DDVP exposure (75% LD50). The oxime K027 was the most efficacious in reducing the DDVP induced lethal effect in rats, while the oxime K203 was more efficacious than trimedoxime, pralidoxime and HI-6. Significant reactivation of DDVP inhibited AChE was achieved only with oxime K027 or its combination with atropine in erythocytes and the diaphragm. Moreover, the acute i.m. toxicity of oxime K027 in rats was lower than all other tested oximes. The results of this study support previous studies considering the oxime K027 as a promising experimental oxime structure for further testing against structurally-different OP compounds.
PB  - Elsevier Science BV, Amsterdam
T2  - Neurotoxicology
T1  - Therapeutic and reactivating efficacy of oximes K027 and K203 against a direct acetylcholinesterase inhibitor
VL  - 55
SP  - 33
EP  - 39
DO  - 10.1016/j.neuro.2016.05.006
ER  - 

@article{
author = "Antonijević, Evica and Musilek, Kamil and Kuca, Kamil and Đukić-Ćosić, Danijela and Vučinić, Slavica and Antonijević, Biljana",
year = "2016",
abstract = "As oxime-based structures are the only causal antidotes to organophosphate (OP)-inhibited acetylcholinesterase (AChE), the majority of studies on these have been directed towards their synthesis and testing. In this study, experimental bispyridinium oximes K027 and K203, which have shown promising results in the last decade of research, were examined in vivo for their therapeutic and reactivating ability in acute poisoning by the direct AChE-inhibitor dichlorvos (DDVP), used as a dimethyl OP structural model. Additionally, the efficacy of oximes K027 and K203 was compared with the efficacy of four oximes (pralidoxime, trimedoxime, obidoxime and HI-6), already used in efficacy experiments and human medicine. To evaluate therapeutic efficacy, groups of Wistar rats were treated with equitoxic doses of oximes (5% LD50, i.m.) and/or atropine (10 mg/kg, i.m.) immediately after s.c. DDVP challenge (4-6 doses). Using the same antidotal protocol, AChE activity was measured in erythrocytes, diaphragm and brain 60 min after s.c. DDVP exposure (75% LD50). The oxime K027 was the most efficacious in reducing the DDVP induced lethal effect in rats, while the oxime K203 was more efficacious than trimedoxime, pralidoxime and HI-6. Significant reactivation of DDVP inhibited AChE was achieved only with oxime K027 or its combination with atropine in erythocytes and the diaphragm. Moreover, the acute i.m. toxicity of oxime K027 in rats was lower than all other tested oximes. The results of this study support previous studies considering the oxime K027 as a promising experimental oxime structure for further testing against structurally-different OP compounds.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Neurotoxicology",
title = "Therapeutic and reactivating efficacy of oximes K027 and K203 against a direct acetylcholinesterase inhibitor",
volume = "55",
pages = "33-39",
doi = "10.1016/j.neuro.2016.05.006"
}

Antonijević, E., Musilek, K., Kuca, K., Đukić-Ćosić, D., Vučinić, S.,& Antonijević, B.. (2016). Therapeutic and reactivating efficacy of oximes K027 and K203 against a direct acetylcholinesterase inhibitor. in Neurotoxicology
Elsevier Science BV, Amsterdam., 55, 33-39.
https://doi.org/10.1016/j.neuro.2016.05.006

Antonijević E, Musilek K, Kuca K, Đukić-Ćosić D, Vučinić S, Antonijević B. Therapeutic and reactivating efficacy of oximes K027 and K203 against a direct acetylcholinesterase inhibitor. in Neurotoxicology. 2016;55:33-39.
doi:10.1016/j.neuro.2016.05.006 .

Antonijević, Evica, Musilek, Kamil, Kuca, Kamil, Đukić-Ćosić, Danijela, Vučinić, Slavica, Antonijević, Biljana, "Therapeutic and reactivating efficacy of oximes K027 and K203 against a direct acetylcholinesterase inhibitor" in Neurotoxicology, 55 (2016):33-39,
https://doi.org/10.1016/j.neuro.2016.05.006 . .