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Liebisch, Gerhard ; Höring, Marcus ; Krautbauer, Sabrina ; Hittl, Louisa ; Babl, Verena ; Sigruener, Alexander ; Burkhardt, Ralph

Accurate Lipid Quantification of Tissue Homogenates Requires Suitable Sample Concentration, Solvent Composition, and Homogenization Procedure—A Case Study in Murine Liver

Liebisch, Gerhard , Höring, Marcus, Krautbauer, Sabrina, Hittl, Louisa, Babl, Verena, Sigruener, Alexander und Burkhardt, Ralph (2021) Accurate Lipid Quantification of Tissue Homogenates Requires Suitable Sample Concentration, Solvent Composition, and Homogenization Procedure—A Case Study in Murine Liver. Metabolites 2021 (11), S. 365. (Eingereicht)

Veröffentlichungsdatum dieses Volltextes: 25 Jun 2021 16:36
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.45804


Zusammenfassung

Lipidomics aim to quantify lipid species in all kinds of samples, including tissues. To subject a fixed amount of sample to various workflows, tissue homogenates were frequently prepared at defined concentrations in water or by addition of organic solvents. Here, we investigated this first step of tissue lipidomics by quantitative flow injection analysis coupled to Fourier-Transform mass ...

Lipidomics aim to quantify lipid species in all kinds of samples, including tissues. To subject a fixed amount of sample to various workflows, tissue homogenates were frequently prepared at defined concentrations in water or by addition of organic solvents. Here, we investigated this first step of tissue lipidomics by quantitative flow injection analysis coupled to Fourier-Transform mass spectrometry (FTMS). The influence of sample concentration, solvent composition, and homogenization procedure on the recovery of lipids was studied in murine liver. Liver homogenates were prepared either by grinding tissue in liquid nitrogen or by bead-based homogenization. Ground samples were dissolved at different concentrations in water, methanol, and water/methanol = 1/1 (v/v). Here, lipid recovery depends on solvent composition and sample concentration. The recovery of nonpolar lipid classes, including triglycerides and cholesteryl ester, was decreased in methanolic homogenates. In contrast, due to superior dispersion of precipitates, bead-based homogenization resulted in efficient lipid recovery independent of the solvent composition. However, lipid distribution within samples, i.e., lipid content of supernatant and pellet following centrifugation, was altered substantially by solvent composition. In conclusion, accurate lipid quantification of tissue homogenates requires evaluation of solvent composition, sample concentration, as well as the homogenization method to guarantee efficient lipid recovery. Due to a potential loss of lipids, removal of precipitates by centrifugation prior to lipid extraction should be avoided.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftMetabolites
Verlag:MDPI
Ort der Veröffentlichung:BASEL
Band:2021
Nummer des Zeitschriftenheftes oder des Kapitels:11
Seitenbereich:S. 365
Datum8 Juni 2021
InstitutionenMedizin > Lehrstuhl für Klinische Chemie und Laboratoriumsmedizin
Identifikationsnummer
WertTyp
10.3390/metabo11060365DOI
Stichwörter / KeywordsMASS-SPECTROMETRY; EXTRACTION; lipidomics; lipids; extraction; recovery; solvent; quantification; preanalytics; tissue homogenization; mass spectrometry
Dewey-Dezimal-Klassifikation600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin
StatusEingereicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-458043
Dokumenten-ID45804

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