J 2017

Electrophoretically mediated microanalysis for simultaneous on-capillary derivatization of standard amino acids followed by micellar electrokinetic capillary chromatography with laser-induced fluorescence detection

CELÁ, Andrea, Aleš MÁDR and Zdeněk GLATZ

Basic information

Original name

Electrophoretically mediated microanalysis for simultaneous on-capillary derivatization of standard amino acids followed by micellar electrokinetic capillary chromatography with laser-induced fluorescence detection

Name in Czech

Elektroforeticky zprostředkovaná mikroanalýza pro současnou derivatizaci standardních aminokyslin v kapiláře následovaná micelární elektrokinetickou kapilární chromatografií s laserem-indukovanou fluorescenční detekcí

Authors

CELÁ, Andrea (203 Czech Republic, belonging to the institution), Aleš MÁDR (203 Czech Republic, belonging to the institution) and Zdeněk GLATZ (203 Czech Republic, belonging to the institution)

Edition

Journal of Chromatography A, Amsterdam, Netherlands, Elsevier Science BV, 2017, 0021-9673

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10600 1.6 Biological sciences

Country of publisher

Netherlands

Confidentiality degree

is not subject to a state or trade secret

Impact factor

Impact factor: 3.716

RIV identification code

RIV/00216224:14310/17:00095072

Organization unit

Faculty of Science

UT WoS

000401394200022

Keywords (in Czech)

kapilární elektroforéza; elektroforeticky zprostředkovaná mikroanalýza; aminokyseliny; derivatizace v kapiláře; metabolomika lidských embryí; příčná difuze v laminárním toku

Keywords in English

Capillary electrophoresis; Electrophoretically mediated microanalysis; Amino acids; On-capillary derivatization; Human embryo metabolomics; Transverse diffusion of laminar flow profiles

Tags

Tags

International impact, Reviewed
Changed: 6/2/2019 11:52, prof. RNDr. Zdeněk Glatz, CSc.

Abstract

V originále

Amino acids are crucial compounds involved in most biochemical processes essential for life. Since their dynamic turnover reflects the actual physiology of the cell/organism, a turnover assessment may provide valuable information related to multiple physiological and pathophysiological conditions. The sensitive determination of amino acids is predominantly associated with their derivatization which might be laborious, time-consuming and difficult to standardize. However, capillary electrophoresis offers the automatic injection and mixing of reactants, incubation of the reaction mixture, separation and detection of the reaction products in one on-capillary procedure. Among the on-capillary mixing strategies, electrophoretically mediated microanalysis (EMMA) is superior in terms of mixing efficiency. In this paper, we present an optimization of EMMA for the simultaneous derivatization of standard amino acids by naphthalene-2,3-dicarboxaldehyde/NaCN and its application to targeted human embryo metabolomics. For such a purpose, novel separation conditions were developed involving the background electrolyte, comprised of 73 mM sodium dodecyl sulfate, 6.7 % (v/v) 1-propanol, 0.5 mM (2-hydroxypropyl)-beta-cyclodextrin and 135 mM boric acid/sodium hydroxide buffer (pH 9.00). Finally, the optimized EMMA was compared to a fundamentally different mixing strategy, namely the transverse diffusion of laminar flow profiles, and proved to be also suitable for human plasma analysis.

Links

GBP206/12/G014, research and development project
Name: Centrum pokročilých bioanalytických technologií
MUNI/A/1278/2016, interní kód MU
Name: Podpora biochemického výzkumu v roce 2017
Investor: Masaryk University, Category A