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Mrštná K, Matoušová K, Krčmová LK, Carazo A, Pourová J, Mladěnka P, Matysová L, Švec F. Analysis of vitamin K 1 and major K 2 variants in rat/human serum and lipoprotein fractions by a rapid, simple, and sensitive UHPLC-MS/MS method. J Chromatogr A 2024; 1714:464548. [PMID: 38043166 DOI: 10.1016/j.chroma.2023.464548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Abstract
Determination of the various forms of vitamin K, which are involved in coagulation and other physiological processes in humans, is challenging and no standardized method is yet available. Therefore, a reliable and practical method was developed to quantify vitamin K levels in serum and additionally in lipoprotein fractions to clarify its distribution. The LC-MS/MS method for the determination of vitamin K1 and the three main isoforms of vitamin K2 (MK-4, MK-7, MK-9) was combined with a gradient ultracentrifugation technique to allow the separation of lipoprotein fractions. The chromatographic separation was carried out on a Kinetex™ C18 column using a mobile phase consisting mainly of methanol. The target analytes were detected by electrospray ionization mass spectrometry. The separation of all four substances was achieved after a simple sample preparation technique based on miniaturized liquid-liquid extraction. Our method of only 8.5 min revealed the levels of the major forms of vitamin K in 59 human and 12 rat sera and confirmed our hypothesis that vitamin K is primarily (about 50 %) found in the high-density lipoprotein fraction. The median concentrations of vitamin K1, MK-4, MK-7, and MK-9 were found to be 1.19, 2.98, 0.43, and < 0.71 nmol/L in human serum and 1.74, 6.75, less than 0.2, and less than 0.5 nmol/L in rat serum, respectively.
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Affiliation(s)
- Kristýna Mrštná
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Kateřina Matoušová
- The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - Lenka Kujovská Krčmová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic.
| | - Alejandro Carazo
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Jana Pourová
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Přemysl Mladěnka
- The Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - Ludmila Matysová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| | - František Švec
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
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Skorepa P, Sobotka O, Vanek J, Ticha A, Fortunato J, Manak J, Blaha V, Horacek JM, Sobotka L. The Impact of Glucose-Based or Lipid-Based Total Parenteral Nutrition on the Free Fatty Acids Profile in Critically Ill Patients. Nutrients 2020; 12:nu12051373. [PMID: 32403367 PMCID: PMC7284730 DOI: 10.3390/nu12051373] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 04/26/2020] [Accepted: 05/07/2020] [Indexed: 02/07/2023] Open
Abstract
Introduction: Our study aim was to assess how the macronutrient intake during total parenteral nutrition (TPN) modulates plasma total free fatty acids (FFAs) levels and individual fatty acids in critically ill patients. Method: Adult patients aged 18–80, admitted to the intensive care unit (ICU), who were indicated for TPN, with an expected duration of more than three days, were included in the study. Isoenergetic and isonitrogenous TPN solutions were given with a major non-protein energy source, which was glucose (group G) or glucose and lipid emulsions (Smof lipid; group L). Blood samples were collected on days 0, 1, 3, 6, 9, 14, and 28. Results: A significant decrease (p < 0.001) in total FFAs occurred in both groups with a bigger decrease in group G (p < 0.001) from day 0 (0.41 ± 0.19 mmol∙L−1) to day 28 (0.10 ± 0.07 mmol∙L−1). Increased palmitooleic acid and decreased linoleic and docosahexaenoic acids, with a trend of increased mead acid to arachidonic acid ratio, on day 28 were observed in group G in comparison with group L. Group G had an insignificant increase in leptin with no differences in the concentrations of vitamin E, triacylglycerides, and plasminogen activator inhibitor-1. Conclusion: Decreased plasma FFA in critically ill patients who receive TPN may result from increased insulin sensitivity with a better effect in group G, owing to higher insulin and glucose dosing and no lipid emulsions. It is advisable to include a lipid emulsion at the latest from three weeks of TPN to prevent essential fatty acid deficiency.
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Affiliation(s)
- Pavel Skorepa
- Department of Military Internal Medicine and Military Hygiene, Faculty of Military Health Sciences, University of Defence in Brno, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (P.S.); (J.V.); (J.M.H.)
- 3rd Department of Internal Medicine—Metabolic Care and Gerontology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic; (O.S.); (J.F.); (J.M.); (V.B.)
| | - Ondrej Sobotka
- 3rd Department of Internal Medicine—Metabolic Care and Gerontology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic; (O.S.); (J.F.); (J.M.); (V.B.)
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Simkova 870, 50003 Hradec Kralove, Czech Republic
| | - Jan Vanek
- Department of Military Internal Medicine and Military Hygiene, Faculty of Military Health Sciences, University of Defence in Brno, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (P.S.); (J.V.); (J.M.H.)
| | - Alena Ticha
- Department of Clinical Biochemistry and Diagnostics, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic;
| | - Joao Fortunato
- 3rd Department of Internal Medicine—Metabolic Care and Gerontology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic; (O.S.); (J.F.); (J.M.); (V.B.)
| | - Jan Manak
- 3rd Department of Internal Medicine—Metabolic Care and Gerontology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic; (O.S.); (J.F.); (J.M.); (V.B.)
| | - Vladimir Blaha
- 3rd Department of Internal Medicine—Metabolic Care and Gerontology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic; (O.S.); (J.F.); (J.M.); (V.B.)
| | - Jan M. Horacek
- Department of Military Internal Medicine and Military Hygiene, Faculty of Military Health Sciences, University of Defence in Brno, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (P.S.); (J.V.); (J.M.H.)
- 4th Department of Internal Medicine—Hematology, University Hospital Hradec Kralove, Sokolska 581, 50005 Hradec Kralove, Czech Republic
| | - Lubos Sobotka
- 3rd Department of Internal Medicine—Metabolic Care and Gerontology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University in Prague, Sokolska 581, 50005 Hradec Kralove, Czech Republic; (O.S.); (J.F.); (J.M.); (V.B.)
- Correspondence: ; Tel.: +420-49-583-2231
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Varga VE, Lőrincz H, Szentpéteri A, Juhász L, Seres I, Paragh G, Balla J, Paragh G, Harangi M. Changes in serum afamin and vitamin E levels after selective LDL apheresis. J Clin Apher 2018; 33:569-575. [PMID: 30247793 DOI: 10.1002/jca.21636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 04/11/2018] [Accepted: 05/23/2018] [Indexed: 11/09/2022]
Abstract
BACKGROUND Afamin is a plasma vitamin E-binding glycoprotein partially associated with ApoA1-containing high-density lipoprotein (HDL) subfractions. In a previous study, the serum vitamin E decreased after low-density lipoprotein (LDL) apheresis, while vitamin E/cholesterol ratio increased. We aimed to study the effect of LDL apheresis on serum afamin level. METHODS The serum level of afamin and oxidized LDL were measured by enzyme-linked immunosorbent assay in six severe heterozygous FH patients before and after their first LDL apheresis treatments and in seven healthy controls. We also investigated the changes in total cholesterol, LDL-C, HDL-C, ApoB, ApoA1, HDL subfractions, and α- and γ-tocopherol levels during the treatment. HDL subfractions were detected by an electrophoretic method on polyacrylamide gel (Lipoprint). Serum α- and γ-tocopherol levels were detected by gas chromatography-mass spectrometry. RESULTS The first treatment sessions decreased serum afamin levels by an average of 9.4%. Total cholesterol, LDL-C, HDL-C and ApoA1 levels decreased by 52.6; 61.8; 10.5; and 14.1%, respectively. We found that α- and γ-tocopherol levels markedly decreased (by 34.1 and 32.9%, respectively), while α- tocopherol/cholesterol and γ-tocopherol/cholesterol ratios significantly increased (by 41.4 and 40.3%, respectively). Oxidized LDL levels significantly decreased. There was a shift toward the larger HDL subfractions. CONCLUSION LDL apheresis moderately decreases the circulating levels of afamin parallel to lowering HDL-C and ApoA1 levels. Tocopherol levels decreases markedly compared to afamin levels, however, beneficial changes in vitamin E/cholesterol ratios, oxidized LDL levels and HDL subfraction distribution were detected. These additional effects of LDL apheresis may result in further cardiovascular risk reduction in FH patients.
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Affiliation(s)
- Viktória E Varga
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - Hajnalka Lőrincz
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - Anita Szentpéteri
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - Lilla Juhász
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - Ildikó Seres
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - György Paragh
- Department of Cell Stress Biology, Department of Dermatology, Roswell Park Cancer Institute, Buffalo, New York
| | - József Balla
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - György Paragh
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
| | - Mariann Harangi
- Department of Internal Medicine, University of Debrecen Faculty of Medicine, Debrecen, Hungary
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Blaha V, Blaha M, Solichová D, Krčmová LK, Lánská M, Havel E, Vyroubal P, Zadák Z, Žák P, Sobotka L. Antioxidant defense system in familial hypercholesterolemia and the effects of lipoprotein apheresis. ATHEROSCLEROSIS SUPP 2017; 30:159-165. [PMID: 29096832 DOI: 10.1016/j.atherosclerosissup.2017.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Oxidative stress is thought to play an important role in the pathogenesis of disorders associated with atherosclerosis. Alpha-tocopherol is considered to be an effective lipophilic antioxidant, which protects lipid membranes against peroxidation and thus prevents cell damage by reaction with free radicals. However, measurement of alpha-tocopherol concentration in serum does not reflect the content of α-tocopherol in membranes whereas erythrocyte alpha-tocopherol may be good indicator of antioxidative status. Therefore a simple isocratic reversed phase HPLC method has been developed and validated for the determination of alpha-tocopherol in human erythrocytes in a clinical setting. The content of alpha-tocopherol in human erythrocyte membrane and lipoperoxidation were studied in patients with severe hypercholesterolemia treated by lipoprotein apheresis. The group of hypercholesterolemic patients (n = 14) treated by lipoprotein apheresis was compared to healthy adult normolipidemic controls. After lipoprotein apheresis, the content of in membrane alpha-tocopherol did not change significantly despite decreased tocopherol in serum and lipoprotein fractions. We observed significantly decreased lipoperoxidation as revealed by serum TBARS, representing end products of lipid peroxidation, which increased from third day afterwards and remained significantly higher in comparison to controls until the next LDL-apheresis. We conclude that aggressive lipid lowering procedure with lipoprotein apheresis was associated with favorable transient decrease of lipoperoxidation. Simultaneously the cell membrane bound antioxidative defense mechanisms as reflected by the content of alpha-tocopherol in human erythrocyte membrane where not depressed in spite of its decreased plasma lipid carrier. Another variables involved remain to be investigated.
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Affiliation(s)
- V Blaha
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic.
| | - M Blaha
- 2nd Department of Internal Medicine, Hematology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - D Solichová
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - L Kujovská Krčmová
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - M Lánská
- 2nd Department of Internal Medicine, Hematology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - E Havel
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - P Vyroubal
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - Z Zadák
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - P Žák
- 2nd Department of Internal Medicine, Hematology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
| | - L Sobotka
- 3rd Department of Internal Medicine, Metabolism and Gerontology, University Hospital Hradec Králové and Medical Faculty Charles University in Hradec Králové, Czech Republic
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