1 research outputs found
Combination of LC–MS- and GC–MS-based Metabolomics to Study the Effect of Ozonated Autohemotherapy on Human Blood
Ozonated autohemotherapy (O<sub>3</sub>-AHT) is a medical
approach
during which blood obtained from the patient is ozonated and injected
back into the body. Despite an increasing number of evidence that
O<sub>3</sub>-AHT is safe, this type of therapy remains controversial.
To extend knowledge about the changes in blood evoked by O<sub>3</sub>-AHT, LC–MS- and GC–MS-based metabolic fingerprinting
was used to compare plasma samples obtained from blood before and
after the treatment with potentially therapeutic concentrations of
ozone. The procedure was performed in PVC bags utilized for blood
storage to study also possible interactions between ozone and plastic.
By use of GC–MS, an increase in lactic acid and pyruvic acid
was observed, which indicated an increased rate of glycolysis. With
LC–MS, changes in plasma antioxidants were observed. Moreover,
concentrations of lipid oxidation products (LOP) and lysophospholipids
were increased after ozone treatment. This is the first report of
increased LOPs metabolites after ozonation of blood. Seven metabolites
detected by LC–QTOF-MS only in ozonated samples could be considered
as novel biomarkers of oxidative stress. Several plasticizers have
been detected by both techniques in blood stored in PVC bags. PVC
is known to be an ozone resistant material, but ozonation of blood
in PVC bags stimulates leaching of plasticizers into the blood