Plasma levels of creatine, 2-aminobutyric acid, acetyl-carnitine and amino acids during fasting measured by counter-current electrophoresis in PAMAPTAC capillary

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11120%2F23%3A43925097" target="_blank" >RIV/00216208:11120/23:43925097 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388963:_____/23:00567662

Výsledek na webu

<a href="https://doi.org/10.1016/j.microc.2023.108426" target="_blank" >https://doi.org/10.1016/j.microc.2023.108426</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.microc.2023.108426" target="_blank" >10.1016/j.microc.2023.108426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Plasma levels of creatine, 2-aminobutyric acid, acetyl-carnitine and amino acids during fasting measured by counter-current electrophoresis in PAMAPTAC capillary

Popis výsledku v původním jazyce

Determination of the minor nitrogen metabolites, creatine, 2-aminobutyric acid (2-AB), and acetyl-carnitine (Ac-carn), in human plasma is performed by capillary electrophoresis (CE) in a 6 % PAMAPTAC coated fused silica capillary. 6 % PAMAPTAC generates a stable electroosmotic flow (EOF) of 6.31 x 10-9 m2V-1s-1; and the nitrogen metabolites are separated in a counter-current mode, which increases electrophoretic resolution. Baseline separation of creatine, 2-AB, Ac-carn, and most proteinogenic amino acids is achieved in 8.5 M acetic acid (AcOH) at pH 1.37 as background electrolyte (BGE) at an effective capillary length of 14.4 cm with migration times ranging from 4.95 min for creatine to 5.43 min for Ac-carn. 20 μL of plasma is deproteinized with the addition of 60 μL of acetonitrile (ACN) and a 21.8 mm sample zone is injected into the capillary, which corresponds to 6.9 % of total and 15 % of effective capillary length. The zone is focused using a large volume sample stacking technique with LODs of 0.2-0.4 μM and LOQs of 0.8-1.3 μM relative to the untreated plasma sample. Inter-day reproducibility of migration time is 0.7-1.1 % and for peak area 2.5-3.9 %. The CE method is used to monitor plasma levels of nitrogen metabolites during 60 h of fasting in 10 healthy lean volunteers. T-test showed statistically significant differences in plasma levels of creatine, 2-AB, Ac-carn and most proteinogenic amino acids, which return to their original concentrations after subsequent 48 h recovery.

Název v anglickém jazyce

Plasma levels of creatine, 2-aminobutyric acid, acetyl-carnitine and amino acids during fasting measured by counter-current electrophoresis in PAMAPTAC capillary

Popis výsledku anglicky

Determination of the minor nitrogen metabolites, creatine, 2-aminobutyric acid (2-AB), and acetyl-carnitine (Ac-carn), in human plasma is performed by capillary electrophoresis (CE) in a 6 % PAMAPTAC coated fused silica capillary. 6 % PAMAPTAC generates a stable electroosmotic flow (EOF) of 6.31 x 10-9 m2V-1s-1; and the nitrogen metabolites are separated in a counter-current mode, which increases electrophoretic resolution. Baseline separation of creatine, 2-AB, Ac-carn, and most proteinogenic amino acids is achieved in 8.5 M acetic acid (AcOH) at pH 1.37 as background electrolyte (BGE) at an effective capillary length of 14.4 cm with migration times ranging from 4.95 min for creatine to 5.43 min for Ac-carn. 20 μL of plasma is deproteinized with the addition of 60 μL of acetonitrile (ACN) and a 21.8 mm sample zone is injected into the capillary, which corresponds to 6.9 % of total and 15 % of effective capillary length. The zone is focused using a large volume sample stacking technique with LODs of 0.2-0.4 μM and LOQs of 0.8-1.3 μM relative to the untreated plasma sample. Inter-day reproducibility of migration time is 0.7-1.1 % and for peak area 2.5-3.9 %. The CE method is used to monitor plasma levels of nitrogen metabolites during 60 h of fasting in 10 healthy lean volunteers. T-test showed statistically significant differences in plasma levels of creatine, 2-AB, Ac-carn and most proteinogenic amino acids, which return to their original concentrations after subsequent 48 h recovery.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Microchemical Journal

ISSN

0026-265X

e-ISSN

1095-9149

Svazek periodika

187

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

108426

Kód UT WoS článku

000921097700001

EID výsledku v databázi Scopus

2-s2.0-85146454087