Quantification and identification of bile acids in saliva by liquid chromatography-mass spectrometry: Possible non-invasive diagnostics of Barrett's esophagus?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081715%3A_____%2F22%3A00559868" target="_blank" >RIV/68081715:_____/22:00559868 - isvavai.cz</a>

Alternative codes found

RIV/65269705:_____/22:00077318 RIV/00216224:14740/22:00128067

Result on the web

<a href="https://hdl.handle.net/11104/0333088" target="_blank" >https://hdl.handle.net/11104/0333088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chroma.2022.463287" target="_blank" >10.1016/j.chroma.2022.463287</a>

Result language

angličtina

Original language name

Quantification and identification of bile acids in saliva by liquid chromatography-mass spectrometry: Possible non-invasive diagnostics of Barrett's esophagus?

Original language description

Bile acids are a group of steroid compounds essential for lipid digestion. However, when bile acids are refluxed into the stomach and the esophagus, during the so called duodenogastroesophageal reflux, they can have a detrimental effect on the esophageal epithelium and cause pathological changes of esophageal tissue, e.g., Barrett's esophagus (BE). The levels of bile acids in saliva could therefore serve as possi-ble biomarkers for the diagnostics of BE. In this work, we focused on optimization of sample collection and preparation by solid-phase extraction and subsequent quantification of 11 bile acids (unconjugated, glycine-conjugated) in saliva from healthy volunteers and BE patients by ultra-high-performance liquid chromatography coupled to triple-quadrupole tandem mass spectrometry. Moreover, high resolution MS (Orbitrap-MS) was utilized for identification of new bile acids in saliva. Methods for saliva collection in-cluding simple spitting and the Salivette (R) saliva collection system were compared, the latter was found to be unsuitable due to excessive retention of bile acids in the cotton swab. Methanol with 0.1% formic acid were selected for protein precipitation and bile acid extraction prior to SPE. Separation was per-formed in gradient elution of methanol and 0.1% formic acid in less than 10 min. Saliva from BE patients contained higher levels of almost all bile acids, and the tested groups could be distinguished by princi-pal component analysis. In untargeted analysis by high resolution MS, taurine-conjugated bile acids and glycine-conjugated dihydroxy-bile acid sulfate were identified in saliva from healthy volunteers. We pro-pose that analysis of salivary bile acids including taurine conjugates could be applicable in diagnostics of BE, following a larger clinical study. (c) 2022 Elsevier B.V. All rights reserved.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10406 - Analytical chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Journal of Chromatography A

ISSN

0021-9673

e-ISSN

1873-3778

Volume of the periodical

1676

Issue of the periodical within the volume

AUG

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

463287

UT code for WoS article

000834927200006

EID of the result in the Scopus database

2-s2.0-85133269215