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Kinetics of 13 new cholinesterase inhibitors

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F06%3A00004419" target="_blank" >RIV/00216275:25310/06:00004419 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Kinetics of 13 new cholinesterase inhibitors

  • Original language description

    Kinetics of hydrolysis of acetylcholine and acetylthiocholine by two types of acetylcholinesterase and butyrylcholinesterase inhibited by 13 new inhibitors (5 carbamates and 8 carbazates) was measured in vitro in a batch reactor at 25 °C, pH 8, ionic strength 0.11 M and enzyme activity 3.5 U by four nondependent analytical methods. Sevin ?, rivastigmin (Exelon?) and galantamin (Reminyl?) served as comparative inhibiting standards. Kinetics of hydrolyses inhibited by all studied carbamates, sevin, carbazates (with exceptions) and rivastigmin (with exceptions) can be simulated by the competitive inhibition model with irreversible reaction between enzyme and inhibitor. Galantamin does not fulfil this model. In positive simulations, the value of inhibition(carbamoylation) rate constant k3 was calculated, describing the reaction velocity between the given enzyme and inhibitor. Physiologically important hydrolyses of acetylcholine catalyzed by acetylcholinesterase from electric eel or bovin

  • Czech name

    Kinetika 13 nových inhibitorů cholinesteráz

  • Czech description

    Kinetika hydrolýzy acetylcholinu a acetylthiocholinu katalyzovaná dvěma typy acetylcholinesterázy a butyrylcholinesterázy a inhibovaná 13 novými inhibitory (5 karbamátů a 8 karbazátů) byla měřena in vitro ve vsádkovém reaktoru při teplotě 25°C, pH 8, iontové síle 0.11 M a enzymové aktivitě 3.5 U čtyřmi nezávislými analytickými metodami. Sevin ?, rivastigmin (Exelon?) a galantamin (Reminyl?) byly použity jako srovnávací stanadrdy. Kinetika hydrolýzy inhibované všemi studovanými karbamáty, sevinem, karbazáty (s výjimkami) a rivastigminem (s výjimkami) splňuje model kompetitivní inhibice s nevratnou reakcí mezi enzymem a inhbitorem. Galantamin tento model nesplňuje. V případě splňování modelu byla vypočtena hodnota rychlostní konstanty inhibice (karbamoylace) k3, která popisuje reakční rychlost mezi daným enzymem a inhibitorem. Fyziologicky významné hydrolýzy acetylcholinu katalyzované acetylcholinesterázou z elektrického úhoře nebo hovězích erytrocytů a butyrylcholinesterázou z koňské pl

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CE - Biochemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Zeitschrift fuer Naturforschung C-A Journal of Biosciences

  • ISSN

    0939-5075

  • e-ISSN

  • Volume of the periodical

    61c

  • Issue of the periodical within the volume

    7-8

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    7

  • Pages from-to

    611-617

  • UT code for WoS article

  • EID of the result in the Scopus database