Insights into Vitamin E Therapy

A special issue of Pharmaceuticals (ISSN 1424-8247). This special issue belongs to the section "Pharmacology".

Deadline for manuscript submissions: closed (20 July 2024) | Viewed by 2274

Special Issue Editors


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Guest Editor
Institute of Nutritional Sciences and Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Friedrich Schiller University Jena, 07743 Jena, Germany
Interests: vitamin E in health and disease; cardiometabolic diseases; inflammation; vitamin E metabolism; long-chain metabolites of vitamin E

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Guest Editor
Institute of Nutritional Science, Friedrich Schiller University Jena, 07743 Jena, Germany
Interests: vitamins; inflammation; cardiometabolic diseases; skin diseases; macrophages
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Special Issue Information

Dear Colleagues,

In 2022, scientists around the world celebrated the centennial anniversary of the discovery of the essentiality of vitamin E. Since then, many studies highlighted the importance of vitamin E for the maintenance of health and prevention of diseases—facts that received a great deal of attention from scientists and the public.

Scientific research on vitamin E is still an exciting and important issue. Although it has long been known as an antioxidant and radical scavenger, vitamin E is also proposed to act via non-antioxidant modes which include the regulation of gene expression, modulation of gene activity at the posttranslational level, as well as inhibition of cell proliferation, platelet aggregation, monocyte adhesion and several more. Next, metabolites of vitamin E have also been proposed to be bioactive regulatory molecules that may mediate the function of vitamin E in part. The elucidation of the molecular mechanisms and the physiological significance of these non-antioxidant functions of vitamin E and its metabolites is the subject of current and future research.

This Special Issue of Pharmaceuticals on “Insights into Vitamin E Therapy” will display our current knowledge on the use of vitamin E for both maintaining health and preventing diseases by including articles on both experimental and clinical studies as well as reviews focused on the most recent advances in research on the function of vitamin E and its derivatives in medicine. The major focus will be on vitamin E and its effects on different diseases, including studies concerning their pathophysiological and molecular mechanisms. Special attention will be also paid to the synthesis of vitamin E, vitamin derivatives and metabolites, as well as their analytics.

With the aim of providing a dedicated forum open to all scientists engaged in this interdisciplinary field of research, we particularly welcome contributions dealing with the following topics:

  • Beneficial effects of vitamin E and its derivates as therapeutics for the maintenance of health and prevention of diseases;
  • Synthesis and analysis of vitamin E forms, their derivatives and metabolites, and of vitamin-related compounds;
  • Formulations of vitamin E and its derivatives for different medical applications;
  • Experimental studies and clinical trials with vitamin E and its derivatives for the treatment of different disorders;
  • Recommended dietary intake and allowance, overdosage and safety of vitamin E;
  • Molecular modes of action of the different vitamin E forms, their derivatives and metabolites, and of vitamin-related compounds;
  • Historical views on clinical trials with vitamin E and its derivatives;
  • Future perspectives of vitamin E research;
  • Genetic factors associated with the response to vitamin E.

We are looking forward to receiving numerous articles on these and related topics.

Prof. Dr. Stefan Lorkowski
Dr. Maria Wallert
Guest Editors

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Keywords

  • vitamin E synthesis
  • non-communicable diseases
  • cardiovascular diseases
  • cardiometabolic diseases
  • fatty liver diseases
  • skin diseases
  • inflammation
  • AVED

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Published Papers (1 paper)

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Research

12 pages, 1475 KiB  
Article
A New LC-MS/MS-Based Method for the Simultaneous Detection of α-Tocopherol and Its Long-Chain Metabolites in Plasma Samples Using Stable Isotope Dilution Analysis
by Alexander Maxones, Eva Beck, Gerald Rimbach and Marc Birringer
Pharmaceuticals 2024, 17(11), 1405; https://doi.org/10.3390/ph17111405 - 22 Oct 2024
Viewed by 1529
Abstract
Background: Our study presented a novel LC-MS/MS method for the simultaneous quantification of α-tocopherol (α-TOH) and its phase II metabolites, α-13′-COOH and α-13′-OH, in human serum using deuterium-labeled internal standards (d6-α-TOH, d6-α-13′-COOH, d6-α-13′-OH). Methods: The method addresses [...] Read more.
Background: Our study presented a novel LC-MS/MS method for the simultaneous quantification of α-tocopherol (α-TOH) and its phase II metabolites, α-13′-COOH and α-13′-OH, in human serum using deuterium-labeled internal standards (d6-α-TOH, d6-α-13′-COOH, d6-α-13′-OH). Methods: The method addresses the analytical challenge posed by the significantly different concentration ranges of α-TOH (µmol/L) and its metabolites (nmol/L). Previous methods quantified these analytes separately, which caused an increase in workflow complexity. Results: Key features include the synthesis of stable isotope-labeled standards and the use of a pentafluorophenyl-based core-shell chromatography column for baseline separation of both α-TOH and its metabolites. Additionally, solid phase extraction (SPE) with a HybridSPE® material provides a streamlined sample preparation, enhancing analyte recovery and improving sensitivity. By utilizing deuterium-labeled standards, the method compensates for matrix effects and ion suppression. This new approach achieves precise and accurate measurements with limits of detection (LOD) and quantification (LOQ), similar to previous studies. Calibration, accuracy, and precision parameters align well with the existing literature. Conclusions: Our method offers significant advantages in the simultaneous analysis of tocopherol and its metabolites despite concentration differences spanning up to three orders of magnitude. In contrast to earlier studies, which required separate sample preparations and analytical techniques for tocopherol and its metabolites, our approach streamlines this process. The use of a solid-phase extraction procedure allows for parallel sample preparation. This not only enhances efficiency but also significantly accelerates pre-analytical workflows, making the method highly suitable for large-scale studies. Full article
(This article belongs to the Special Issue Insights into Vitamin E Therapy)
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