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Title:Kromatografske metode za določevanje biooznačevalcev lipidne peroksidacije iz fizioloških vzorcev : magistrsko delo
Authors:ID Prša, Amadeja (Author)
ID Kotnik, Petra (Mentor) More about this mentor... New window
ID Knez Marevci, Maša (Comentor)
Files:.pdf MAG_Prsa_Amadeja_2025.pdf (5,26 MB)
MD5: 2A8DFE7B49C53663B6144DD35B2A358A
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V magistrskem delu smo razvili in validirali kromatografske metode za določanje biomarkerjev lipidne peroksidacije v fizioloških vzorcih, s poudarkom na malondialdehidu (MDA), ki je ključni kazalec oksidativnega stresa. Uporabili smo tehnike plinske kromatografije z masno spektrometrijo (GC-MS) in tekočinske kromatografije z masno spektrometrijo (LC-MS/MS), ki omogočajo visoko občutljivost in selektivnost pri analizi kompleksnih bioloških vzorcev, kot je serum. Validacija metod je vključevala oceno linearnosti, ponovljivosti, točnosti in mej zaznave (LOD) za MDA in sorodne spojine. Poleg tega smo izvajali teste antioksidativne kapacitete, kot so DPPH, FRAP, CUPRAC, ORAC in TAC, da bi ocenili sposobnost seruma in drugih vzorcev pri nevtralizaciji prostih radikalov. Rezultati kažejo, da so razvite metode natančne, občutljive in primerne za analizo MDA v fizioloških vzorcih. Ugotovili smo, da koncentracije MDA korelirajo z intenzivnostjo oksidativnega stresa, kar potrjuje uporabnost teh biomarkerjev pri spremljanju patoloških stanj. Poleg tega smo pokazali, da ima serum pomembno antioksidativno kapaciteto, ki jo je mogoče učinkovito ovrednotiti z uporabo kombinacije različnih testov. Magistrsko delo prispeva k razvoju naprednih analitskih orodij za raziskave oksidativnega stresa, ki so ključnega pomena za razumevanje vpliva lipidne peroksidacije na zdravje in bolezni ter za razvoj novih terapevtskih strategij.
Keywords:Oksidativni stres, lipidna peroksidacija, malondialdehid, testi antioksidativnosti, kromatografske metode (GC-MS, LC-MS/MS).
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[A. Prša]
Year of publishing:2025
Number of pages:1 spletni vir (1 datoteka PDF (XIII, 84 str.))
PID:20.500.12556/DKUM-91522 New window
UDC:543.54:577.115(043.2)
COBISS.SI-ID:228279555 New window
Publication date in DKUM:27.02.2025
Views:150
Downloads:75
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:10.01.2025

Secondary language

Language:English
Title:Chromatographic methods for the determination of lipid peroxidation biomarkers from physiological samples
Abstract:In this master's thesis, we developed and validated chromatographic methods for the determination of lipid peroxidation biomarkers in physiological samples, focusing on malondialdehyde (MDA), a key indicator of oxidative stress. We employed gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) techniques, which provide high sensitivity and selectivity for analyzing complex biological samples, such as serum. The method validation included the assessment of linearity, repeatability, accuracy, and limits of detection (LOD) for MDA and related compounds. Additionally, we performed antioxidant capacity tests, including DPPH, FRAP, CUPRAC, ORAC, and TAC, to evaluate the ability of serum and other samples to neutralize free radicals. The results demonstrate that the developed methods are precise, sensitive, and suitable for MDA analysis in physiological samples. We found that MDA concentrations correlate with oxidative stress levels, confirming the utility of these biomarkers in monitoring pathological conditions. Furthermore, we showed that serum exhibits significant antioxidant capacity, which can be effectively evaluated using a combination of different assays. This master's thesis contributes to the development of advanced analytical tools for oxidative stress research, which are essential for understanding the impact of lipid peroxidation on health and disease and for advancing new therapeutic strategies.
Keywords:Oxidative stress, lipid peroxidation, malondialdehyde, antioxidant tests, chromatographic methods (GC-MS, LC-MS/MS).


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