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Simultaneous application of intravenous fat emulsion and charcoal hemoperfusion in quetiapine overdose case

100%
Veli S., Atanasov V., Angelov J., Kanev K.
Open Medicine
|
2014
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vol. 9
|
issue 3
505-507
EN
The simultaneous application of intravenous fat emulsion and charcoal hemoperfusion in the case of severe quetiapine poisoning is described. The initial blood concentration of quetiapine was 5.9 µg/mL and rapid deterioration in the patient status was observed. When a lipid emulsion was infused a fast blood pressure recovery occurred which allows to perform extracorporeal clearance using charcoal hemoperfusion. At the end of the procedure the quetiapine concentration was decreased down to 1.5 µg//mL and fast recovery of the patient was observed.
2
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Detection and identification of atypical quetiapine metabolite in urine

100%
Atanasov V., Kanev K., Mitewa M.
Open Medicine
|
2008
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vol. 3
|
issue 3
327-331
EN
Quetiapine fumarate (Seroquel®) is an atypical antipsychotic dibenzothiazepine derivative. Due to its extensive hepatic metabolism and low level of unchanged excretion (< 1%) the routine toxicological drug-screening analyses of urine often leads to false negative results. In the present study, we report that a newly identified metabolite of quetiapine, N-desalkylquetiapine, can be used as an indicative marker of quetiapine-intake in urine using common GC-MS screening procedure. The structure of the mentioned metabolite was solved from the mass-spectrum obtained and the quetiapine presence was proved by consequent HPLC plasma analysis.
3
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Correlation between butyrylcholinesterase variants and sensitivity to soman toxicity

100%
Dimov D., Kanev K., Dimova I.
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2012
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vol. 59
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issue 2
313-316
EN
Butyrylcholinesterase (BChE) is synthesized in the liver and found in high concentrations in blood plasma, liver, heart, pancreas, vascular endothelium, skin, brain white matter, smooth muscle cells and adipocytes. BChE is a non specific enzyme that hydrolyzes different choline esters (succinylcholine, mivacurium) and many other drugs such as aspirin, cocaine and procaine. The enzyme is also considered as a bioscavenger due to its ability to neutralize the toxic effects of organophosphorus compounds (nervous system fs agents) such as soman. BChE displays several polymorphisms that influence its serum activity; therefore they could determine the individual sensitivity to chemical nerve agents. In this study, we investigated the correlation between BChE variants and the degree of enzyme inhibition and reactivation after soman application on blood samples of 726 individuals. The blood samples of individuals expressing abnormal variants, were more sensitive to soman compared to variants of homozygotes and heterozygotes for U-allele. We found significant differences in the degree of enzyme reactivation between different variants (with and without U-presence).
4
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Statistical interpretation of medical data of patients with alcohol abuse

76%
Bardarov V., Simeonova P., Neikova L., Bardarov K., Simeonov V., Tsakovski S., Kanev K.
Open Medicine
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2012
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vol. 7
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issue 4
465-474
EN
An attempt is made to assess a set of biochemical, kinetic and anthropometric data for patients suffering from alcohol abuse (alcoholics) and healthy patients (non-alcoholics). The main goal is to identify the data set structure, finding groups of similarity among the clinical parameters or among the patients. Multivariate statistical methods (cluster analysis and principal components analysis) were used to assess the data collection. Several significant patterns of related parameters were found to be representative of the role of the liver function, kinetic and anthropometric indicators (conditionally named “liver function factor”, “ethanol metabolism factor”, “body weight factor”, and “acetaldehyde metabolic factor”). An effort is made to connect the role of kinetic parameters for acetaldehyde metabolism with biochemical, ethanol kinetic and anthropometric data in parallel.
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