| Title |
Summary |
Year |
| UVB-exposed wheat germ oil increases serum 25-hydroxyvitamin D2 without improving overall vitamin D status: a randomized controlled trial |
UVB-exposed wheat germ oil containing vitamin D can increase 25(OH)D2 levels but do no improve total serum levels of 25(OH)D of vitamin D-insufficient subjects. Vitamin D measured with MassChrom Vitamin D assay. |
2022 |
| Prevalence of 25(OH)D insufficiency and overweight/obesity in an adult population from the Central Italy |
The study suggests that awareness of the relationship between obesity and vitamin D status is clinically relevant and the investigation of the pathogenic mechanisms could lead to improve the clinical approach to obesity. Vitamin D measured with HPLC assay from Chromsystems. |
2022 |
| Low socioeconomic status predicts vitamin D status in a cross-section of Irish children |
The study determined that a quarter of our sample of children were deficient, rising to one-third in those in disadvantaged areas. Females and those aged over 12 years had a higher prevalence of deficiency. Vitamin D measured with Chromsystems assay. |
2022 |
| 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 |
| Vitamin D epimers are associated with circulating haemoglobin levels independently of C-reactive protein |
The study showed that vitamin D epimers are associated with circulating haemoglobin levels, which supports the role of vitamin D in red blood cell and iron physiology. |
2021 |
| Factors associated with bone health status of Malaysian pre-adolescent children in the PREBONE-Kids Study |
Lean mass was the major determinant of bone mineral content and demnsity among pre-adolescent Malaysian children alongside other modifiable lifestyle factors. MassChrom Vitamin D an dpeimer upgrade were used |
2021 |
| Postprandial 25-hydroxyvitamin D response varies according to the lipid composition of a vitamin D3 fortified dairy drink |
This research supports the use of olive oil as the lipid component of vitamin D fortified dairy drinks to improve 25(OH)D in insufficient participants. Vitamin D measured with Chromsystems assay. |
2021 |
| Maternal obesity and baseline vitamin D insufficiency alter the response to vitamin D supplementation: a double-blind, randomized trial in pregnant women |
This research highlights the need for a revised maternal policy on maternal vitamin D supplementation guidelines, particularly considering our findings on maternal obesity and the implications for related infant umbilical cord 25(OH)D concentrations. Measured with MassChrom Vitamin D assay. |
2021 |
| Acute effects of an inorganic phosphorus additive on mineral metabolism and cardiometabolic risk factors in healthy subjects |
An oral phosphorus load can induce elevated postprandial levels of circulating phosphate for hours in healthy subjects, despite rapid homeostatic counterreactions. Vitamin D, measured with MassChrom assay was used to dtermine associations with phosphate an parathyroid hormone. |
2021 |
| A Comparison of Bone Mineral Density and Its Predictors in HIV-infected and HIV-uninfected Older Men |
According to this study, traditional risk factors for fracture, including low body mass index, high C-terminal cross-linking telopeptide of type I collagen level, and low vitamin D supplementation, were significant predictors of low bone mineral density and trabecular bone score. Vitamin D measured with MassChrom assay. |
2021 |
| Vitamin D and Blood Parameters |
The elevation of vitamin D plasma levels provides enhanced preconditions for a better tissue oxygenation on a cellular level. Vitamin D measured with MassChrom assay. |
2021 |
| Vitamin D Status Is Associated with Modifiable Lifestyle Factors in Pre-Adolescent Children Living in Urban Kuala Lumpur, Malaysia |
Modifiable lifestyle factors such as sun exposure and reducing obesity are important public health guidance to ensure optimal vitamin D status in these children according to that study that used the MassChrom Vitamin D assay including the epimer upgrade |
2021 |
| Investigating the Relationship between Vitamin D and Persistent Symptoms Following SARS-CoV-2 Infection |
These results suggest that persistent fatigue and reduced exercise tolerance following COVID-19 are independent of vitamin D. Measured with MassChrom Vitamin D assay. |
2021 |
| Effect of gender, diabetes duration, inflammatory cytokines, and vitamin D level on bone mineral density among Thai children and adolescents with type 1 diabetes |
Deleterious effect of type 1 diabetes mellitus (T1DM) on bone mineral density (BMD) is gender specific. The longer the duration of T1DM, the greater the deficit in BMD found among boys with T1DM. Vitamin D and epimers measured with MassChrom Vitamin D assay and the epimer upgrade. |
2021 |
| Vitamin D and Blood Parameters |
The elevation of vitamin D plasma levels provides enhanced preconditions for a better tissue oxygenation on a cellular level. Vitamin D levels measured with MassChrom Vitamin D assay. |
2021 |
| Vitamin D Status Is Associated with Modifiable Lifestyle Factors in Pre-Adolescent Children Living in Urban Kuala Lumpur, Malaysia |
"Body surface area exposed to sunlight, Sun Index, and fat mass were significant predictors of 25(OH)D concentrations in this population. modifiable lifestyle factors such as sun exposure and reducing obesity are important public health guidance to ensure optimal vitamin D status in these children. Vitamin D and epimers were determined with MassChrom Vitamin D assay including the epimer upgrade. |
2021 |
| Vitamin D pathway gene polymorphisms, vitamin D level, and cytokines in children with type 1 diabetes |
Relationships between Type-1 diabetes and CYP2R1 polymorphism and VDR haplotype were found. Vitamin D gene-related variations were associated with vitamin D and circulating cytokine levels in children with Type-1 diabetes |
2021 |
| Vitamin D and Hospital Admission in Older Adults: A Prospective Association |
Vitamin D deficiency was a common finding in our cohort, affecting all age groups and occurring in over half (51%) of the values measured. Measured with MassChrom Vitamin D assay. |
2021 |
| Prevalence of vitamin D deficiency in an inpatient population in the Swiss Canton of Basel-Country |
Vitamin D deficiency was a common finding in our cohort, affecting all age groups and occurring in over half (51%) of the values measured. Measured with MassChrom Vitamin D assay. |
2021 |
| Geomapping Vitamin D Status in a Large City and Surrounding Population—Exploring the Impact of Location and Demographics |
This study shows that nearly one in four of the GP-tested population in Dublin and surrounding areas are vitamin D deficient in the winter, during which time up to 50% have 25(OH)D less than 50 nmol/L. Measured with MassChrom Vitamin D assay. |
2020 |
| Inadequacy of Vitamin D Nutritional Status in Individuals with Metabolically Unhealthy Obesity Phenotype: The Relevance of Insulin Resistance |
The highest prevalence of inadequacy of serum concentrations of 25(OH)D and greater severity of this deficiency in individuals with MUHO phenotype were observed. Vitamin D was measured by the Chromsystems HPLC assay. |
2020 |
| A High Prevalence of Vitamin D Deficiency Observed in an Irish South East Asian Population: A Cross-Sectional Observation Study |
This study concludes that given the importance of vitamin D for health, a sub-population could be at a significantly increased risk of rickets, impaired bone metabolism, and osteoporosis. MassChrom Vitamin D assay was used for the determination of vitamin D. |
2020 |
| Inadequacy of Vitamin D Nutritional Status in Individuals with Metabolically Unhealthy Obesity Phenotype: The Relevance of Insulin Resistance |
According to this study, monitoring the nutritional status of vitamin D in individuals with obesity that present with metabolically unhealthy obesity phenotype may contribute to minimize the occurrence and aggravation of diseases associated with obesity. |
2020 |
| High-phosphorus diets reduce aortic lesions and cardiomyocyte size and modify lipid metabolism in Ldl receptor knockout mice |
A high phosphorus intake strongly affected the formation of vascular lesions, cardiac morphology, and lipid metabolism, although these changes are not indicative of an increased cardiovascular risk. MassChrom Vitamin D assay was used. |
2020 |
| 25-Hydroxyvitamin D Concentrations Are Lower in Patients with Positive PCR for SARS-CoV-2 |
On the basis of this preliminary observation, vitamin D supplementation might be a useful measure to reduce the risk of infection. Vitamin D was measured with MassChrom assay combined with MassSTAR automation platform. |
2020 |
| Influence of physical activity on serum vitamin D levels in people with multiple sclerosis |
physical activity has an effect on vitamin D levels independent of sunlight exposure time in people with MS (pwMS) with low-grade disability. Vitamin D measured by HPLC assay (Chromsystems). |
2020 |
| Regulation of vitamin D system in skeletal muscle and resident myogenic stem cell during development, maturation, and ageing |
understanding the local vitamin D system in skeletal muscle could help develop effective interventions for vitamin D supplementation to improve skeletal muscle mass and function during ageing. massChrom Vitamin D measured Vitamin D. |
2020 |
| Sunshine is an important determinant of vitamin D status even among high-dose supplement users:2 secondary analysis of a randomised controlled trial in Crohn’s disease patients |
The authors suggest that sunshine is an important determinant of 25(OH )D concentration, even in those who are taking high‐dose vitamin D supplements and reside at a higher mid‐latitude location. Vitamin D concentrations were measured with the MassChrom Vitamin D assay. |
2020 |
| High dose vitamin D exacerbates central nervous system autoimmunity by raising T-cell excitatory calcium |
These findings suggest that vitamin D at moderate levels may exert a direct regulatory effect, while continuous high dose vitamin D treatment could trigger multiple sclerosis disease activity by raising mean levels of T-cell excitatory calcium. Measured with massChrom Vitamin D assay. |
2019 |
| Klotho and vitamin D in multiple sclerosis: an Italian study |
Our findings did not identify a role of Klotho in the genetic susceptibility to multiple sclerosis. Vitamin D was measured with HPLC assay from Chromsystems. |
2019 |
| Vitamin D Deficiency and Unclear Abdominal Pain in Patients from Low- and Middle-Income Countries |
This study showed for the first time that patients from LMIC who presented to ED with UAP displayed VDD. Validation from larger studies is warranted to evaluate the linkage of VDD with UAP. Measured with MassChrom Vitamin D assay. |
2019 |
| Prevalence and determinants of vitamin D deficiency in the third trimester of pregnancy: a multicentre study in Switzerland |
Vitamin D supplement intake during pregnancy was found to be the most actionable determinant of vitamin D status, suggesting that vitamin D supplementation during pregnancy should receive more attention in clinical practice. MassChrom Vitamin D was used in combination with MassSTAR, an automated solution. |
2018 |
| Impaired bone mineral accrual in prepubertal HIV-infected children: a cohort study. |
HIV-infected children have compromised bone mass and the presence of puberty seems to provide suitability of these parameters. The vitmin D levels were anylsed by using the HPLC assay from Chromsystems. |
2015 |
| Potential causal associations between vitamin D and uric acid: Bidirectional mediation analysis |
The study used MassChrom vitamin D assay to analyse suggested potential causal associations between the GC gene and UA through the 25(OH)D mediator. |
2015 |
| Relationship of vitamin D status and bone mass according to vitamin D-binding protein genotypes |
The interaction between vitamin D status, as measured by circulating 25(OH)D and DBP rs2282679 genotypes, modified the association between 25(OH)D and BMD and bone markers. Differences in DBP genotypes additionally influenced the correlation of fetuin-A levels with femoral BMD. Measured with the Chromsystems LC-MS/MS assay. |
2015 |
| The Role of FTO and Vitamin D for the Weight Loss Effect of Roux-en-Y Gastric Bypass Surgery in Obese Patients |
data suggest that presurgery vitamin D levels influence the size of genotype effects of FTO rs9939609 on RYGB surgery-induced weight loss in obese patients. HPLC- Vitamin D Assay from Chromsystems was used |
2015 |
| Vitamin D Binding Protein is not involved in Vitamin D deficiency in patients with chronic kidney disease |
This study concludes that Vitamin D binding protein is not involved in vitamin D deficiency. |
2015 |
| Vitamin D deficiency decreases survival of bacterial meningoencephalitis in mice |
The researchers' obersavations suggest a detrimental role of vitamin D deficiency in bacterial central nervous system infections. Vitamin D that was measured with the MassChrom assay may exert immune regulatory functions. |
2015 |
| Vitamin D status predicts 30 day mortality in hospitalised cats |
this study demonstrates that low serum 25(OH)D concentration status is an independent predictor of short term mortality in cats. Vitamin D measured with the MassChrom assay. |
2015 |
| Vitamin D Status: A Different Story in the Very Young versus the Very Old Romanian Patients |
the study stresses the need to increase awareness of the importance of preventing Vitamin D supplementation administration errors in the young. Vitamin D measured by the Chromsystems HPLC assay. |
2015 |
| Diagnostic value of endoscopic ultrasonography for preoperative localization of parathyroid adenomas |
Diagnostic value of endoscopic ultrasonography for preoperative localization of parathyroid adenomas, vitamin D measured by HPLC. |
2014 |
| Dietary, lifestyle, and genetic determinants of vitamin D status: a cross-sectional analysis from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Germany study |
Study in the German population on the vitamin D status. Vitamin D was measured with the MassChrom assay, with LC-MS/MS considered as the gold standard. |
2014 |
| Evaluation of left ventricle functions by tissue Doppler, strain, and strain rate echocardiography in patients with primary hyperparathyroidism |
Study on Cardiovascular morbidity and mortality increases in patients with primary hyperparathyroidism (PHPT). Vitamin D measured by Chromsystems HPLC assay. |
2014 |
| Low bone mineral density in young individuals is associated with greater gingival inflammation and recession |
Low bone mineral density in young individuals was associated with greater gingival inflammation and recession when compared to those individuals with normal BMD values. Measured with HPLC Vitamin D assay. |
2014 |
| Lupin protein isolate versus casein modifies cholesterol excretion and mRNA expression of intestinal sterol transporters in a pig model |
Data reveal that the cholesterol-lowering effect of lupin protein isolate is attributable to an increased faecal output of cholesterol and a reduced intestinal uptake of cholesterol. Vitamin D in this study was measured by MassChrom Vitamin D. |
2014 |
| Vitamin D Deficiency Reduces the Immune Response, Phagocytosis Rate, and Intracellular Killing Rate of Microglial Cells |
observations suggest that vitamin D deficiency may impair the resistance of the brain against bacterial infections. Vitamin D measured with MassChrom assay by LC-MS/MS. |
2014 |
| Vitamin D is not linked to folate status and mRNA expression of intestinal proton-coupled folate transporter |
Current data from studies with model animals and humans provide no indication for a vitamin D effect on intestinal uptake and status of folate. Vitamin D measured by LC-MS/MS assay from Chromsystems |
2014 |
| Association of vitamin D deficiency and hyperparathyroidism with anemia: a cross-sectional study |
. Results from this study suggest that vitamin D deficiency is independently associated with anemia in females but not males. Measured with the Chromsystems MassChrom assay. |
2013 |
| Changes in circulating 25-hydroxyvitamin D according to vitamin D binding protein genotypes after vitamin D₃ or D₂ supplementation |
Genetic variation in DBP (rs4588 SNP) influences responsiveness to vitamin D₃ but not vitamin D₂, both measured with the MassChrom assay |
2013 |
| Comparison between daily supplementation doses of 200 versus 400 IU of vitamin D in infants |
in order to avoid vitamin D deficiency and rickets, the authors recommend supplementation dose of vitamin D at 400 IU/day as a safe and effective dose. Chromsystems HPLC assay was usd for the dtermination of vitamin D. |
2013 |
| Plasma 25-hydroxyvitamin D and its genetic determinants in relation to incident myocardial infarction and stroke in the European prospective investigation into cancer and nutrition (EPIC)-Germany study |
the present findings do not point to a major causal role of vitamin D in the development of these diseases. Vitamin D measured by MassChrom assay. |
2013 |
| Plasma 25-hydroxyvitamin D and its genetic determinants in relation to incident type 2 diabetes: a prospective case-cohort study |
This study casts doubt on a strong causal association of 25(OH)D with Type 2 diabetes, but suggest that further research in large-scale consortia is needed. Vitamin D measured by MassChrom assay. |
2013 |
| Preoperative nutritional deficiencies in severely obese bariatric candidates are not linked to gastric Helicobacter pylori infection |
Data confirm previous reports on high prevalences of nutritional deficiencies in severely obese subjects. However, they do not provide evidence for a contributing role of gastric H. pylori infection to these nutritional alterations. HPLC assay from Chromsystems was used to determine Vitamin D. |
2013 |
| Seasonal disease activity and serum vitamin D levels in rheumatoid arthritis, ankylosing spondylitis and osteoarthritis |
results suggest that vitamin D does not have an important role in the seasonal disease activity of the diseases. Vitamin D measured by HPLC assay from Chromsystems. |
2013 |
| The Association of vitamin D status and fasting glucose according to body fat mass in young healthy Thais |
The authors speculate that adiposity might influence the relationship of vitamin D status that was measured by the MassCHrom assay and FPG (fasting plasma glucose). |
2013 |
| Vitamin D, secondary hyperparathyroidism, and preeclampsia |
The study concludes that some women who are vitamin D insufficient develop secondary hyperparathyroidism, which is associated with increased risk of preeclampsia. Vitamin D measured by Chromsystems HPLC assay. |
2013 |
| Correlation between the cord vitamin D levels and regulatory T cells in newborn infants |
The results in the paper suggest that the serum level of 25-hydroxyvitamin D is not crucially involved in the correlation between vitamin D status and T cell regulation in cord blood. Measured by Chromsystems HPLC assay |
2012 |
| Investigation of insulin resistance in patients with normocalcemic primary hyperparathyroidism. |
Patients with NPHPT do not exhibit insulin resistance and glucose intolerance. Since so little is known about this form of disease, subjects should be monitored regularly for the metabolic aspects of the disease as well as the progression of their disease. vitsamin D measured by HPLC with Chromsystems assay. |
2012 |
| Malic enzyme gene polymorphism is associated with responsiveness in circulating parathyroid hormone after long-term calcium supplementation |
Cytosolic malic enzyme 1 gene polymorphism is associated with the degree of suppression of parathyroid hormone after long-term calcium supplementation. The effect is probably mediated through an increase in intestinal calcium absorption. Vitamin D was anylsed by the MassChrom Vitamin D assay. |
2012 |
| Parathyroid incidentalomas detected during thyroid ultrasonography and effect of chronic thyroiditis on false positive parathyroid lesions |
Chronic thyroiditis might cause inadvertent interpretation of a hypoechoic lesion as a parathyroid pathology during thyroid US. Vitamin D measured by HPLC with a Chromsystems assay. |
2012 |
| Vitamin D and calcium status in urban children attending an ambulatory clinic service in the United Arab Emirates |
The study highlights that in an ambulatory pediatric clinic population, peri-pubescent children are most at risk of vitamin D deficiency. |
2012 |
| Regional variation and determinants of vitamin D status in sunshine-abundant Thailand. |
Vitamin D insufficiency is common and varies across geographical regions in Thailand. |
2011 |
| Vitamin D deficiency and sun avoidance among university students at Abu Dhabi, United Arab Emirates |
This study offers evidence that vitamin D deficiency could be a major public health burden among young Emirati adult |
2011 |
| Age as a determinant of nutritional status: a cross sectional study |
Increasing age is independently associated with poor nutritional status, according to this study that used Chromsystems HPLC assay to measure Vitamin D. |
2005 |
