Vitamin A/E
| Title | Summary | Year |
| Essential metals, vitamins and antioxidant enzyme activities in COVID-19 patients and their potential associations with the disease severity | Their findings reinforce that deficiency or excess of certain micronutrients plays a role in the pathogenesis of COVID-19. More studies are required to support their results. Vitamin A and E were measured with Chromsystems HPLC assay, vitamin D with MassChrom assay. | 2022 |
| Higher intakes of nutrients are linked with a lower risk of cardiovascular diseases, type 2 diabetes mellitus, arthritis, and depression among Korean adults | The findings found higher intakes of fruits, vegetables, and multiple individual nutrients are linked with a lower risk of NCDs in the Korean adult population. Vitamin A/E measured with Chromsystems assay. | 2022 |
| Exploring Early Detection of Frailty Syndrome in Older Adults: Evaluation of Oxi-Immune Markers, Clinical Parameters and Modifiable Risk Factors | Results obtained show a progressive immune activation and production of pro-inflammatory molecules in the presence of frailty, agreeing with the inflammageing model. Vitamin A/E were measured with Chromsystems HPLC assay | 2021 |
| 2021 | ||
| Exploring Early Detection of Frailty Syndrome in Older Adults: Evaluation of Oxi-Immune Markers, Clinical Parameters and Modifiable Risk Factors | Results obtained show a progressive immune activation and production of pro-inflammatory molecules in the presence of frailty, agreeing with the inflammageing model. Vitamin A/E were measured with Chromsystems HPLC assay. | 2021 |
| Folic Acid Is Related to Muscle Strength and Vitamin A Is Related to Health-Related Quality of Life: Results of the Korea National Health and Nutrition Examination Survey (KNHANES VII 2016–2018) | Vitamin A was associated with quality of life, especially in the self-care dimension for the elderly. Vitamin A was measured with Chromsystems HPLC assay. | 2021 |
| Vitamin A Plasma Levels in COVID-19 Patients: A Prospective Multicenter Study and Hypothesis |
Vitamin A plasma levels in COVID-19 patients are reduced during acute inflammation and that severely reduced plasma levels of vitamin A are significantly associated with Acute Respiratory Distress Syndrome and mortality. Vitamin A was measured with Chromsystems HPLC assay. | 2021 |
| Dynamics of Serum Retinol and Alpha-Tocopherol Levels According to Non-Alcoholic Fatty Liver Disease Status | While circulating concentrations of retinol and α-tocopherol were positively associated with the presence of non-alcoholic fatty liver disease advanced liver fibrosis was only correlated with serum retinol levels. Vitamin A and E were measured with the Chromsystems HPLC assay. | 2021 |
| Effects of Antioxidant Vitamins, Curry Consumption, and Heavy Metal Levels on Metabolic Syndrome with Comorbidities: A Korean Community-Based Cross-Sectional Study | Vitamins and curry supplements might reduce the prevalence of metabolic syndrome. The results indicate that thiamine and curry intakes might protect the public against the dual burden of communicable and non-communicable diseases in Korea. However, further work is required to determine the nature of the mechanisms involved. Vitamin A and E were measured with Chromsystems HPLC assay. | 2021 |
| Negative Correlation Between Vitamin A and Positive Correlation Between Vitamin E and Inflammation Among Healthy Adults in Korea: Based on the Korea National Health and Nutrition Examination Survey (KNHANES) 2016–2018 7th Edition | Vitamins exert its effect through different isoforms. The isoform conversion phases involved are affected outside factors. Here, we investigated the correlation between serum retinol, α-tocopherol, and serum inflammatory markers using stratified data acquired from 2016 to 2018 Korea National Health and Nutrition Examination Survey (KNHANES). Vitamin A and E are measured with the Chromsystems HPLC assay in this study | 2020 |
| Antioxidant Activity with Increased Endogenous Levels of Vitamin C, E and A Following Dietary Supplementation with a Combination of Glutathione and Resveratrol Precursors | This study provides preliminary evidence for the use of GSH precursors combined with polydatin to maintain redox status into an ideal range. Chromsystems assays were used for the determination of vitamin A/E/C | 2020 |
| Association Between Serum Retinol and α-Tocopherol Levels and Metabolic Syndrome in Korean General Population: Analysis of Population-based Nationally Representative Data | high serum retinol and α-tocopherol levels were associated with increased risk of metabolic syndrome. Vitamin A and E were measured with Chromsystems HPLC assay. | 2020 |
| Patisiran Pharmacokinetics, Pharmacodynamics, and Exposure‐Response Analyses in the Phase 3 APOLLO Trial in Patients With Hereditary Transthyretin‐Mediated (hATTR) Amyloidosis | The patisiran dosing regimen of 0.3 mg/kg every 3 weeks is appropriate for all patients with hATTR amyloidosis. A measured with HPLC assay from Chromsystems. | 2020 |
| Assessment of Vitamin Status in Patients with Nontuberculous Mycobacterial Pulmonary Disease: Potential Role of Vitamin A as a Risk Factor | Their study suggests that altered vitamin status is associated with mycobacterial disease, and that vitamin A might play an important role in nontuberculous mycobacterial pulmonary disease. The analysis of vitamin A/E was performed by the HPLC assay from Chromsystems. | 2019 |
| Impact of HSD17B13 rs72613567 genotype on hepaticdecompensation and mortality in patients with portalhypertension | In patients with viral hepatitis‐ and ALD‐induced portal hypertension, the T > TA‐variant was not protective of hepatic decompensation and mortality. Further studies should investigate the pathophysiological mechanisms underlying the effects of HSD17B13 genotype at different stages of liver disease. | 2019 |
| Oxidized and electronegative low-density lipoprotein as potential biomarkers of cardiovascular risk in obese adolescents | Obese adolescents showed increased plasma LDL(-) and oxLDL, and obese girls had more LDL(-) than obese boys. Therefore, oxLDL is strongly and independently associated with classical cardiovascular risk factors, while increased levels of LDL(-) were influenced by body mass index, waist circumference and demographic parameters in obese adolescents. antioxidants all measured by Chromsystems assays. | 2018 |
| Vitamin A Status in Healthy Women Eating Traditionally Prepared Spirulina (Dihé) in the Chad Lake Area | We demonstrate that β-carotene in spirulina is an effective positive modulator of blood retinol status and that a natural food compound, Dihè, is a potential natural source of β-carotene to achieve an optimal vitamin A status in healthy women. Vitamin A and ß-carotene measured by Chromsystems assay. | 2018 |
| Vitamin A Status in Healthy Women Eating Traditionally Prepared Spirulina (Dihé) in the Chad Lake Area | The results confirm that β-carotene in spirulina is an effective positive modulator of blood retinol status. Dihé is a potential natural source of β-carotene to achieve a proper vitamin A status in healthy women living near Chad Lake.. Vitamin A and β-Carotene by Chromsystems HPLC assay. | 2018 |
| Hyperphenylalaninemia Correlated with Global Decrease of Antioxidant Genes Expression in White Blood Cells of Adult Patients with Phenylketonuria | This study is the first to evaluate the expression of 22 antioxidant genes in white blood cells regarding biochemical parameters in PKU. Vitamin A, C and E measured with Chromsystems assays. | 2017 |
| Alpha-tocopherol and MRI outcomes in multiple sclerosis--association and prediction | The authors show an association between increasing alpha-tocopherol concentrations and simultaneous and subsequent MRI disease activity in multiple sclerosis patients during treatment with IFNB. Tocopherol was measured by Chromsystems HPLC assay. | 2013 |
| Is There a Relationship Between Serum Levels of Vitamin A, Vitamin E, Copper and Zinc and Otitis Media With Effusion in Children? | The results of this study showed that serum levels of vitamin A, vitamin E and copper may not play a role on development of OME. On the other hand, we found that the serum levels of zinc were higher in group 2 patients (adenoid hyperplasia-alone) than group 1 patients (OME-adenoid hyperplasia). Vitamin A and E were measured by Chromsystems assay. | 2012 |
| Antioxidant defense and oxidative stress in children with acute hepatitis A | Their research points out that hepatatis A infection causes oxidative stress in children. Antioxidant vitamin supplements could be added to the therapy for these patients to help reestablish the oxidant status balance. However, further investigations to confirm this suggestion are recommended. Ascorbic acid, α-tocopherol, retinol, β-carotene, and GSH, Malondialdehyde measured with Chromsystems assay . | 2011 |
| Correlation Between Vitamin A, E, Coenzyme Q(10) and Degree of Insulin Resistance in Obese and Non-Obese Subjects | The study shows no significant correlations between serum coenzyme Q(10), plasma vitamin A and E levels and insulin resistance in obese and control subjects. | 2011 |
| The vitamin E-binding protein afamin is altered significantly in the peritoneal fluid of women with endometriosis | The auhtors found differences in peritoneal fluid afamin levels between women with and without endometriosis, a finding that confirms the link between the disease and localized oxidative stress. Vitamin E measured by HPLC | 2010 |
| Vitamin A status of healthy children in Manisa, Turkey | This study showed that vitamin a deficiency is a moderate health problem in Manisa. | 2010 |
| alpha-Tocopherol Disturbs Macrophage LXRalpha Regulation of ABCA1/G1 and Cholesterol Handling | alpha-Tocopherol compromises cellular lipid scavenging and channelling of cholesterol into reverse transport out of the vessel wall. The determination in cell cultures was taking place with the Chromsystems assay | 2008 |
| Vitamin A and beta-carotene supply of women with gemini or short birth intervals: a pilot study | Despite the fact that vitamin A and beta-carotene rich food is generally available, risk groups for low vitamin A supply exist in the western world. Both vitamins measured by Chromsystems HPLC assays. | 2007 |
Please find here publications as guides for reference ranges or therapeutic ranges. They may differ from other published data and are only intended to serve as a rough guide. As data vary depending on patient population and measurement method, please determine ranges for your laboratory. When determining ranges make sure that you comply with local national requirements.
| Title | Summary | Year |
| Gressner A.M., Arndt T. (Eds). Lexikon der Medizinischen Laboratoriumsdiagnostik, 3rd edition, Springer Verlag (2019). | Book with reference values | 2019 |
| Soldin SJ, Wang, et al. Pediatric Refrence Intervals: 7th edition, AACC Press (2011) | Book with reference values | 2011 |