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
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
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.
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.
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.
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.
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.
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.
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.
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 .
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
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
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.
Please find here publications as guides for reference ranges or therapeutic ranges. As they may differ from other published data. 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.
Gressner A.M., Arndt T. (Eds). Lexikon der Medizinischen Laboratoriumsdiagnostik, 3rd edition, Springer Verlag (2019).