Objective: We developed and validated an analytical method for quantifying 25-hydroxyvitamin D2 (25OHD2) and 25-hydroxyvitamin D3 (25OHD3) in serum and plasma.
Methods: Samples, pretreated with zinc sulfate and methanol, were extracted with hexane. Separation was achieved via UHPLC and 25OHD quantification was accomplished by a triple quadrupole mass spectrometer.
Results: Imprecision was 3.6-15.1%CV and bias 88.0-126.0%. Extraction efficiency was 76.5-110.5%, whereas the matrix effect ranged from -46.7 to -32.0%. The method was applied to authentic specimens. The results showed no significant difference between serum and plasma; strong correlation with paired values from an external laboratory; and analyte stability for 15 days.
Conclusion: This method provides reliable and accurate measurement of 25OHD for use in clinical practice.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4155/bio.14.229 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effects of Dietary Habits on Markers of Oxidative Stress in Subjects with Hashimoto's Thyroiditis: Comparison Between the Mediterranean Diet and a Gluten-Free Diet.
Nutrients
January 2025
Endocrine Unit, Department of Human Pathology of Adulthood and Childhood DETEV, University of Messina, 98125 Messina, Italy.
Background: The Mediterranean diet (MedD) exerts anti-inflammatory and anti-oxidant effects that are beneficial in autoimmune thyroid diseases (ATD). Recently, a gluten-free diet (GFD) has been proposed for non-celiac patients with Hashimoto's thyroiditis (HT), but its usefulness is under debate. The present pilot study evaluates the effects of these two dietary regimes, with a focus on redox homeostasis, in HT.
View Article and Find Full Text PDFPotential Effect of Cinnamaldehyde on Insulin Resistance Is Mediated by Glucose and Lipid Homeostasis.
Nutrients
January 2025
Instituto de Bioeletricidade Celular (IBIOCEL): Ciência & Saúde, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Rua João Pio Duarte Silva, 241, Sala G 301, Florianópolis 88038-000, SC, Brazil.
Diabetes mellitus is a metabolic syndrome that has grown globally to become a significant public health challenge. Hypothesizing that the plasma membrane protein, transient receptor potential ankyrin-1, is a pivotal target in insulin resistance, we investigated the mechanism of action of cinnamaldehyde (CIN), an electrophilic TRPA1 agonist, in skeletal muscle, a primary insulin target. Specifically, we evaluated the effect of CIN on insulin resistance, hepatic glycogen accumulation and muscle and adipose tissue glucose uptake.
View Article and Find Full Text PDFEnhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
Nutrients
January 2025
Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA.
Vitamin C is an antioxidant and is essential for immune function and infection resistance. Supplementation is necessary when a sufficient amount of vitamin C is not obtained through the diet. Alternative formulations of vitamin C may enhance its bioavailability and retention over traditional ascorbic acid.
View Article and Find Full Text PDFPlasma Lipid Profile Among Perimenopausal Latvian Women in Relation to Dietary Habits.
Nutrients
January 2025
Faculty of Agriculture and Food Technology, Latvia University of Life Sciences and Technologies, LV-3001 Jelgava, Latvia.
Hormonal changes throughout a woman's life cycle significantly affect serum lipid levels. Alterations in the serum lipid profile can increase the risk of cardiovascular diseases (CVDs). Additionally, nutrition and dietary habits are crucial for managing dyslipidemia.
View Article and Find Full Text PDFAre Trace Elements Provided for Children on Long-Term Parenteral Nutrition Adequate to Meet Their Needs?
Life (Basel)
December 2024
The Children's Memorial Health Institute, Department of Pediatrics, Nutrition and Metabolic Diseases, 04-730 Warsaw, Poland.
: We conducted a cross-sectional study to investigate whether children receiving long-term parenteral nutrition (LPN) are at risk of imbalances in selected trace elements. : Serum levels of manganese, zinc, copper, selenium, and iodine were measured in 83 children on LPN and compared with 121 healthy controls. Children with signs of infection or elevated C-reactive protein levels were excluded.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!