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Padrtová T, Marvanová P, Kubínová R, Csöllei J, Farsa O, Goněc T, Odehnalová K, Opatřilová R, Pazourek J, Sychrová A, Šmejkal K, Mokrý P. Indol-2-Carboxylic Acid Esters Containing N-Phenylpiperazine Moiety - Preparation and Cholinesterase-inhibiting Activity. Curr Org Synth 2021; 17:576-587. [PMID: 32560608 DOI: 10.2174/1570179417666200619132218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/21/2020] [Accepted: 05/28/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The indole derivatives and the N-phenylpiperazine fragment represent interesting molecular moieties suitable for the research of new potentially biologically active compounds. This study was undertaken to identify if indol-2-carboxylic acid esters containing N-phenylpiperazine moiety possess acetylcholinesterase and butyrylcholinesterase inhibitory activity. MATERIALS AND METHODS The study dealt with the synthesis of a novel series of analogs of 1H-indole-2- carboxylic acid and 3-methyl-1H-indole-2-carboxylic acid. The structure of the derivatives was represented by the indolylcarbonyloxyaminopropanol skeleton with the attached N-phenylpiperazine or diethylamine moiety, which formed a basic part of the molecule. The final products were synthesized as dihydrochloride salts, fumaric acid salts, and quaternary ammonium salts. The first step of the synthetic pathway led to the preparation of esters of 1H-indole-2-carboxylic acid from the commercially available 1H-indole-2-carboxylic acid. The Fischer indole synthesis was used to synthesize derivatives of 3-methyl-1H-indole-2-carboxylic acid. RESULTS AND DISCUSSION Final 18 indolylcarbonyloxyaminopropanols in the form of dihydrochlorides, fumarates, and quaternary ammonium salts were prepared using various optimization ways. The very efficient way for the formation of 3-methyl-1H-indole-2-carboxylate (Fischer indole cyclization product) was the one-pot synthesis of phenylhydrazine with methyl 2-oxobutanoate with acetic acid and sulphuric acid as catalysts. CONCLUSION Most of the derivatives comprised of an attached N-phenylpiperazine group, which formed a basic part of the molecule and in which the phenyl ring was substituted in position C-2 or C-4. The synthesized compounds were subjected to cholinesterase-inhibiting activity evaluation, by modified Ellman method. Quaternary ammonium salt of 1H-indole-2-carboxylic acid which contain N-phenylpiperazine fragment with nitro group in position C-4 (7c) demonstrated the most potent activity against acetylcholinesterase.
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Affiliation(s)
- Tereza Padrtová
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Pavlína Marvanová
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Renáta Kubínová
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Jozef Csöllei
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Oldřich Farsa
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Tomáš Goněc
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Klára Odehnalová
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Radka Opatřilová
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Jiří Pazourek
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Alice Sychrová
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Karel Šmejkal
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Petr Mokrý
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
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Karasova JZ, Hrabinova M, Krejciova M, Jun D, Kuca K. Donepezil and Rivastigmine: Pharmacokinetic Profile and Brain-targeting After Intramuscular Administration in Rats. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2021; 19:95-102. [PMID: 33680013 PMCID: PMC7758017 DOI: 10.22037/ijpr.2019.1100723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Current palliative pharmacotherapy of Alzheimer's disease based on the cholinergic hypothesis led to the development of four cholinesterase inhibitors. These compounds can bring prolongation of the symptom-free period in some patients. This is the first report directly comparing donepezil and rivastigmine plasma and brain levels in in-vivo study. Donepezil and rivastigmine were applied i.m. to rats; the dose was calculated from clinical recommendations. The samples were analysed on an Agilent 1260 Series LC with UV/VIS detector. An analytical column (Waters Spherisorb S5 W (250 mm × 4.6 i.d.; 5 μm particle size)) with guard column (Waters Spherisorb S5 W (30 mm × 4.6 mm i.d.)) was used. The mobile phase contained acetonitrile and 50 mM sodium dihydrogen phosphate (17:83; v/v); pH 3.1. The LLOQ in rat plasma was 0.5 ng/mL for donepezil and 0.8 ng/mL for rivastigmine, and the LLOQ in rat brain was 1.0 ng/mL for donepezil and 1.1 ng/mL for rivastigmine. Both compounds showed ability to target the central nervous system, with brain concentrations exceeding those in plasma. Maximum brain concentration after i.m. administration was reached in the 36 (8.34 ± 0.34 ng/mL) and 17 minute (6.18 ± 0.40 ng/mL), respectively for donepezil and rivastigmine. The differences in brain profile can be most easily expressed by plasma/brain AUCtotal ratios: donepezil ratio in the brain was nine-times higher than in plasma and rivastigmine ratio was less than two-times higher than in plasma.
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Affiliation(s)
- Jana Zdarova Karasova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic.,Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Martina Hrabinova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic
| | - Marketa Krejciova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic
| | - Daniel Jun
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic.,Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
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3
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Vanova N, Hojna A, Pejchal J, Herman D, Malinak D, Prchalova E, Musilek K, Karasova JZ. Determination of K869, a Novel Oxime Reactivator of Acetylcholinesterase, in Rat Body Fluids and Tissues by Liquid-Chromatography Methods: Pharmacokinetic Study. J Pharm Sci 2021; 110:1842-1852. [PMID: 33545185 DOI: 10.1016/j.xphs.2021.01.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/29/2021] [Accepted: 01/29/2021] [Indexed: 10/22/2022]
Abstract
Oxime reactivators of acetylcholinesterase (AChE) represent an integral part of standard antidote treatment of organophosphate poisoning. Oxime K869 is a novel bisquaternary non-symmetric pyridinium aldoxime with two pyridinium rings connected by a tetramethylene bridge where two chlorines modify the pyridinium ring bearing the oxime moiety. Based on in vitro assays, K869 is a potent AChE and butyrylcholinesterase (BChE) reactivator. For the investigation of the basic pharmacokinetic properties of K869 after its intramuscular application, new HPLC-UV and LC-MS/MS methods were developed and validated for its determination in rat body fluids and tissues. In this study, the SPE procedure for sample pretreatment was optimized as an alternative to routine protein precipitation widely used in oxime pharmacokinetics studies. K869 oxime is quickly absorbed into the central compartment reaching its maximum in plasma (39 ± 4 μg/mL) between 15 and 20 min. The majority of K869 was eliminated by kidneys via urine when compared with biliary excretion. However, only a limited amount of K869 (65 ± 4 ng/g of brain tissue) was found in the brain 30 min after oxime administration. Regarding the brain/plasma ratio calculated (less than 1%), the penetration of K869 into the brain did not exceed conventionally used oximes.
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Affiliation(s)
- Nela Vanova
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Czech Republic.
| | - Anna Hojna
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Czech Republic
| | - Jaroslav Pejchal
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Czech Republic
| | - David Herman
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Czech Republic
| | - David Malinak
- Faculty of Science, Department of Chemistry, University of Hradec Kralove, Hradec Kralove, Czech Republic; University Hospital Hradec Kralove, Biomedical Research Centre, Hradec Kralove, Czech Republic
| | - Eliska Prchalova
- Faculty of Science, Department of Chemistry, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Musilek
- Faculty of Science, Department of Chemistry, University of Hradec Kralove, Hradec Kralove, Czech Republic; University Hospital Hradec Kralove, Biomedical Research Centre, Hradec Kralove, Czech Republic
| | - Jana Zdarova Karasova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Czech Republic; University Hospital Hradec Kralove, Biomedical Research Centre, Hradec Kralove, Czech Republic
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Mžik M, Žďárová-Karasová J, Chalupová K, Korábečný J, Palička V, Šesták V. UHPLC-HRMS study of anti-Alzheimer's drug candidates: metabolism of 7-MEOTA-tryptophan hybrids hampers their passage into brain. J Pharm Biomed Anal 2019; 174:134-144. [PMID: 31167157 DOI: 10.1016/j.jpba.2019.05.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 11/15/2022]
Abstract
Being among the top five causes of death in the developed world, Alzheimer's disease represents a major socio-economic issue. We administered a single intramuscular dose of two new hybrid anti-Alzheimer's compounds, with 7-methoxytacrine (7-MEOTA; acetylcholinesterase inhibitor) and tryptophan (inhibitor of amyloid accumulation) in their structure, to rats. Using validated ultra-high-performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS) methods, we uncovered their inability to enter the site of action - the brain. We discuss four possible explanations: i) physico-chemical properties, ii) lack of active/facilitated transport, iii) effective efflux and/or iv) extensive metabolism. High-resolution mass spectrometric analyses proved that the compounds are easily hydrolysed at amide bond between tryptophan and the linker both in vitro and in vivo. Contrary to the parent compounds these metabolites - analogues of 7-MEOTA - can enter the brain in significant amounts.
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Affiliation(s)
- M Mžik
- Department of Clinical Biochemistry and Diagnostics, University Hospital and Faculty of Medicine Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - J Žďárová-Karasová
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic; Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - K Chalupová
- Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - J Korábečný
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic; Biomedical Research Centre, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - V Palička
- Department of Clinical Biochemistry and Diagnostics, University Hospital and Faculty of Medicine Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - V Šesták
- Department of Clinical Biochemistry and Diagnostics, University Hospital and Faculty of Medicine Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic.
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Karasova JZ, Hroch M, Pohanka M, Hepnarova V, Pejchal J, Kuca K. Pyridostigmine bromide and its relation to Gulf War illness. TOXIN REV 2018. [DOI: 10.1080/15569543.2018.1480496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Jana Zdarova Karasova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Milos Hroch
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Miroslav Pohanka
- Department of Molecular Pathology and Biology, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Vendula Hepnarova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Jaroslav Pejchal
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
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Zdarova Karasova J, Sestak V, Korabecny J, Mezeiova E, Palicka V, Kuca K, Mzik M. 1-Benzyl-4-methylpiperidinyl moiety in donepezil: The priority ticket across the blood-brain-barrier in rats. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1092:350-358. [PMID: 29936371 DOI: 10.1016/j.jchromb.2018.06.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/14/2018] [Accepted: 06/15/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Jana Zdarova Karasova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic; Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Vit Sestak
- Department of Clinical Biochemistry, University Hospital, Hradec Kralove, Czech Republic
| | - Jan Korabecny
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic; Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Eva Mezeiova
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic
| | - Vladimir Palicka
- Department of Clinical Biochemistry, University Hospital, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Biomedical Research Centre, University Hospital, Hradec Kralove, Czech Republic; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic; Department of Cellular Biology and Pharmacology, Florida International University, Miami, FL, USA
| | - Martin Mzik
- Department of Clinical Biochemistry, University Hospital, Hradec Kralove, Czech Republic.
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Kuca K, Karasova JZ, Soukup O, Kassa J, Novotna E, Sepsova V, Horova A, Pejchal J, Hrabinova M, Vodakova E, Jun D, Nepovimova E, Valis M, Musilek K. Development of small bisquaternary cholinesterase inhibitors as drugs for pre-treatment of nerve agent poisonings. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:505-512. [PMID: 29563775 PMCID: PMC5849933 DOI: 10.2147/dddt.s133038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background Intoxication by nerve agents could be prevented by using small acetylcholinesterase inhibitors (eg, pyridostigmine) for potentially exposed personnel. However, the serious side effects of currently used drugs led to research of novel potent molecules for prophylaxis of organophosphorus intoxication. Methods The molecular design, molecular docking, chemical synthesis, in vitro methods (enzyme inhibition, cytotoxicity, and nicotinic receptors modulation), and in vivo methods (acute toxicity and prophylactic effect) were used to study bispyridinium, bisquinolinium, bisisoquinolinium, and pyridinium-quinolinium/isoquinolinium molecules presented in this study. Results The studied molecules showed non-competitive inhibitory ability towards human acetylcholinesterase in vitro that was further confirmed by molecular modelling studies. Several compounds were selected for further studies. First, their cytotoxicity, nicotinic receptors modulation, and acute toxicity (lethal dose for 50% of laboratory animals [LD50]; mice and rats) were tested to evaluate their safety with promising results. Furthermore, their blood levels were measured to select the appropriate time for prophylactic administration. Finally, the protective ratio of selected compounds against soman-induced toxicity was determined when selected compounds were found similarly potent or only slightly better to standard pyridostigmine. Conclusion The presented small bisquaternary molecules did not show overall benefit in prophylaxis of soman-induced in vivo toxicity.
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Affiliation(s)
- Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove.,Biomedical Research Center, University Hospital Hradec Kralove
| | - Jana Zdarova Karasova
- Biomedical Research Center, University Hospital Hradec Kralove.,Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence
| | - Ondrej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove
| | - Jiri Kassa
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence
| | - Eva Novotna
- Biomedical Research Center, University Hospital Hradec Kralove
| | - Vendula Sepsova
- Biomedical Research Center, University Hospital Hradec Kralove.,Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence
| | - Anna Horova
- Biomedical Research Center, University Hospital Hradec Kralove
| | - Jaroslav Pejchal
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence
| | - Martina Hrabinova
- Biomedical Research Center, University Hospital Hradec Kralove.,Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence
| | - Eva Vodakova
- Biomedical Research Center, University Hospital Hradec Kralove
| | - Daniel Jun
- Biomedical Research Center, University Hospital Hradec Kralove.,Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove.,Biomedical Research Center, University Hospital Hradec Kralove
| | - Martin Valis
- Department of Neurology, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Musilek
- Department of Chemistry, Faculty of Science, University of Hradec Kralove.,Biomedical Research Center, University Hospital Hradec Kralove
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Zdarova Karasova J, Mzik M, Hroch M, Korabecny J, Nepovimova E, Vorisek V, Palicka V, Kuca K. The New Acetylcholinesterase Inhibitors PC-37 and PC-48 (7-Methoxytacrine-Donepezil-Like Compounds): Characterization of Their Metabolites in Human Liver Microsomes, Pharmacokinetics and In Vivo Formation of the Major Metabolites in Rats. Basic Clin Pharmacol Toxicol 2017; 122:373-382. [PMID: 29067789 DOI: 10.1111/bcpt.12922] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 10/16/2017] [Indexed: 12/22/2022]
Abstract
The objective of this study was to elucidate the pharmacokinetics and metabolite formation of newly developed non-selective AChE/BChE 7-MEOTA-donepezil-like inhibitors for potential therapeutic use in Alzheimer's disease (AD) patients. The chemical structures of metabolites were defined during incubation with human liver microsomes, and subsequently, the metabolization was verified in in vivo study. In vitro metabolic profiling revealed the formation of nine major metabolites in the case of PC-37 and eight metabolites of PC-48. Hydroxylation and the enzymatic hydrolysis of bonds close to the piperazine ring appeared to be the principal metabolic pathways in vitro. Of these metabolites, M1-M7 of PC-37 and M1-M6 of PC-48 were confirmed under in vivo conditions. Pilot pharmacokinetic experiments in rats were focused on the absorption, distribution and elimination of these compounds. Absorption after i.m. application was relatively fast; the bioavailability expressed as AUCtotal was 28179 ± 4691 min.ng/mL for PC-37 and 23374 ± 4045 min.ng/mL for PC-48. Both compounds showed ability to target the central nervous system, with brain concentrations exceeding those in plasma. The maximal brain concentrations are approximately two times higher than the plasma concentrations. The relatively high brain concentrations persisted throughout the experiment until 24 hr after application. Elimination via the kidneys (urine) significantly exceeded elimination via the liver (bile). All these characteristics are crucial for new candidates intended for AD treatment. The principle metabolic pathways that were verified in the in vivo study do not show any evidence for formation of extremely toxic metabolites, but this needs to be confirmed by further studies.
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Affiliation(s)
- Jana Zdarova Karasova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Hradec Kralove, Brno, Czech Republic.,Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic
| | - Martin Mzik
- Institute of Clinical Biochemistry and Diagnostic, University Hospital, Hradec Kralove, Czech Republic
| | - Milos Hroch
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Jan Korabecny
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Hradec Kralove, Brno, Czech Republic.,Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic
| | - Eugenie Nepovimova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Hradec Kralove, Brno, Czech Republic
| | - Viktor Vorisek
- Institute of Clinical Biochemistry and Diagnostic, University Hospital, Hradec Kralove, Czech Republic
| | - Vladimir Palicka
- Institute of Clinical Biochemistry and Diagnostic, University Hospital, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic.,Department of Cellular Biology and Pharmacology, Florida International University, Miami, FL, USA
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Karasova JZ, Maderycova Z, Tumova M, Jun D, Rehacek V, Kuca K, Misik J. Activity of cholinesterases in a young and healthy middle-European population: Relevance for toxicology, pharmacology and clinical praxis. Toxicol Lett 2017; 277:24-31. [PMID: 28465191 DOI: 10.1016/j.toxlet.2017.04.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/21/2017] [Accepted: 04/24/2017] [Indexed: 01/05/2023]
Abstract
The activity of human cholinesterases, erythrocyte acetylcholinesterase (AChE; EC 3.1.1.7) and plasma butyrylcholinesterase (BChE; EC 3.1.1.8) represents an important marker when monitoring exposure to pesticides/nerve agents, and may also be used in occupational medicine in diagnosis and prognosis of some diseases. In this study "normal/baseline" AChE and BChE activity has been investigated in a young and healthy population, with subsequent evaluation of several intra-population factors including sex, age (categories 18-25, 26-35 and 36-45 years old) and smoker status. The modified Ellman's method was used for enzyme activity assessment in 387 young and healthy individuals (201 males and 186 females aged 18-45). A significant inter-sexual difference in AChE and BChE activity was found (AChE: 351±67 for males and 377±65 for females, (μmol/min)/(μmol of hemoglobin), p<0.001; BChE: 140±33 for males and 109±29 for females, μkat/l, p<0.001; mean±SD). Despite the finding that mean AChE activity somewhat decreased whereas BChE activity grew within the age categories of the tested subjects, no significant effect of age on cholinesterase activity was found (p>0.05). Smoking influenced cholinesterase activity - AChE activity in smokers was elevated (approx. 3% in males; 8% in females) relative to that in non-smokers (p<0.05). Smoking was found not to have any effect on BChE activity. Reference values based on confidence intervals for AChE and BChE activity were established. The presented results might be useful in routine clinical practice where the monitoring of blood AChE and plasma BChE activity is crucial for prognosis and diagnosis of organophosphate poisoning, in occupational medicine and in relevant mass casualty scenarios.
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Affiliation(s)
- Jana Zdarova Karasova
- Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic; Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic.
| | - Zuzana Maderycova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Martina Tumova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Daniel Jun
- Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic; Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Vit Rehacek
- Transfusion Department, University Hospital, Hradec Kralove, Czech Republic; Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic; Department of Cellular Biology and Pharmacology, College of Medicine, Florida, International University, Miami, USA
| | - Jan Misik
- Biomedical Research Center, University Hospital, Hradec Kralove, Czech Republic; Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
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