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Vitamin d binding protein

Katie M O'Brien, Dale P Sandler, Min Shi, Quaker E Harmon, Jack A Taylor, Clarice R Weinberg
Genetic factors likely influence individuals' concentrations of 25-hydroxyvitamin D [25(OH)D], a biomarker of vitamin D exposure previously linked to reduced risk of several chronic diseases. We conducted a genome-wide association study of serum 25(OH)D (assessed using liquid chromatography-tandem mass spectrometry) and 386,449 single nucleotide polymorphisms (SNPs). Our sample consisted of 1,829 participants randomly selected from the Sister Study, a cohort of women who had a sister with breast cancer but had never had breast cancer themselves...
2018: Frontiers in Genetics
Brawnie Petrov, Ayat Aldoori, Cindy James, Kefeng Yang, Guillermo Perez Algorta, Aejin Lee, Liwen Zhang, Tao Lin, Reem Al Awadhi, Jonathan R Parquette, Arpad Samogyi, L Eugene Arnold, Mary A Fristad, Barbara Gracious, Ouliana Ziouzenkova
Genetic, dietary, and inflammatory factors contribute to the etiology of major mood disorders (MMD), thus impeding the identification of specific biomarkers to assist in diagnosis and treatment. We tested association of vitamin D and inflammatory markers in 36 adolescents with bipolar disorder (BD) and major depressive disorder (MDD) forms of MMD and without MMD (non-mood control). We also assessed the overall level of inflammation using a cell-based reporter assay for nuclear factor kappa-B (NFκB) activation and measuring antibodies to oxidized LDL...
March 13, 2018: Translational Psychiatry
Jia Qi Wu, Jiu Hui Jiang, Li Xu, Cheng Liang, Xiu Jing Wang, Yunyang Bai
OBJECTIVE: To identify a panel of differentially expressed candidate biomarkers for patients undergoing accelerated osteogenic orthodontics (AOO). METHODS: This study included 36 saliva samples taken from six Class III surgical patients at six time points: the date before the corticotomy procedure (T1) and at 1 week, 2 weeks, 1 month, 2 months and 6 months after the procedure (T2, T3, T4, T5 and T6, respectively). After the maxillary dental arch was aligned and levelled, AOO procedures were performed in the maxillary alveolar bone...
2018: Chinese Journal of Dental Research
Deniz Kirac, Ceyda Dincer Yazan, Hazal Gezmis, Ali Yaman, Goncagul Haklar, Onder Sirikci, Elif Cigdem Altunok, Oguzhan Deyneli
Type 1 diabetes mellitus (T1DM) is an insulin dependent autoimmune disorder resulting the progressive destruction of pancreatic beta cells. Another possible factor considered to be related with T1DM is vitamin D deficiency. Therefore in this study it was aimed to investigate the associations between T1DM, vitamin D binding protein (VDBP) and vitamin D receptor (VDR) gene mutations which are related with vitamin D metabolism. Fifty five T1DM paitents and 40 healthy volunteers were recruited to the study. FokI (rs2228570), BsmI (rs1544410) mutations in VDR; rs4588 and rs7041 polymorphisms in VDBP were investigated with real-time polymerase chain reaction (RT-PCR)...
February 28, 2018: Cellular and Molecular Biology
Piyaporn Karuwanarint, Benjaluck Phonrat, Anchalee Tungtrongchitr, Kanjana Suriyaprom, Somlak Chuengsamarn, Florian J Schweigert, Rungsunn Tungtrongchitr
AIM: To investigate the relationship of vitamin D-binding protein (GC) and genetic variation of GC (rs4588, rs7041 and rs2282679) with metabolic syndrome (MetS) in the Thai population. MATERIALS & METHODS: GC-globulin concentrations were measured by quantitative western blot analysis in 401 adults. All participants were genotyped using TaqMan allelic discrimination assays. RESULTS: GC-globulin levels were significatly lower in MetS subjects than in control subjects, in which significant negative correlations of GC-globulin levels with systolic blood pressure, glucose and age were found...
March 5, 2018: Biomarkers in Medicine
Jamie Perin, Gregory Prokopowicz, Margaret Furtado, Konstantinos Papas, Kimberley E Steele
BACKGROUND: Vitamin and mineral deficiencies are common following Roux-en-Y gastric bypass (RYGB) and can lead to significant morbidity, but little research on the efficacy of vitamin supplementation regimens exists. We compared the efficacy and tolerability of an investigational versus a standard multivitamin regimen in patients undergoing RYGB. METHODS: Fifty-six patients, aged 18 to 65, were randomized to an investigational versus a standard multivitamin. Plasma levels of vitamins A, B-12, D, E-α, E-β/γ, thiamine, folate, iron, iron-binding capacity, iron saturation, prealbumin, and parathyroid hormone (PTH) were measured at 3 and 6 months postoperatively...
March 2, 2018: Obesity Surgery
Mujtaba Mubashir, Shaheena Anwar, Asal Khan Tareen, Naseema Mehboobali, Khalida Iqbal, Mohammad Perwaiz Iqbal
Objective: To investigate the relationship of vitamin D deficiency and risk of AMI in a Pakistani population, and to find out any association between vitamin D binding protein (VDBP) genotypes and risk of AMI in this population. Methods: In a comparative cross-sectional study, 246 patients (age: 20-70 years; 171 males and 75 females) with first AMI were enrolled with informed consent. Similarly, 345 healthy adults (230 males and 115 females) were enrolled as controls...
November 2017: Pakistan Journal of Medical Sciences Quarterly
Elisa Saarnio, Minna Pekkinen, Suvi T Itkonen, Virpi Kemi, Heini Karp, Kaisa K Ivaska, Juha Risteli, Marja-Kaisa Koivula, Merja Kärkkäinen, Outi Mäkitie, Harri Sievänen, Christel Lamberg-Allardt
BACKGROUND: Studies have shown altered vitamin D metabolism in obesity. We assessed differences between obese and normal-weight subjects in total, free, and bioavailable 25-hydroxyvitamin D (25(OH)D, 25(OH)DFree, and 25(OH)DBio, respectively), vitamin D binding protein (DBP), parathyroid hormone (PTH) and bone traits. METHODS: 595 37-47-year-old healthy Finnish men and women stratified by BMI were examined in this cross-sectional study. Background characteristic and intakes of vitamin D and calcium were collected...
2018: PloS One
Allison M Wilkin, Amber Harnett, Michael Underschultz, Cheryl Cragg, Kelly A Meckling
The protein disulfide isomerase ERp57 (GRp58/PDIA3/1,25D3-MARRS) has been implicated in a multitude of signaling pathways throughout the entire body. Most thoroughly studied for its protein-folding role, ERp57 has also been found to have multiple binding partners, and have significant effects on cellular growth. ERp57 has been studied n the context of several neurodegenerative disorders, metabolic conditions, and can be used as a prognosis marker in certain cancers. One role, as an alternate vitamin D binding receptor, has prompted research in tissues with known vitamin D activity, such as the intestine and bone...
February 22, 2018: Steroids
Julia M Kubiak, Guri Grimnes, Kevin D Cashman, Elena Kamycheva, Kirsten Dowling, Zuzana Skrabáková, Rolf Jorde
OBJECTIVE: Evaluate the effects of serum 25-hydroxyvitamin D (25(OH)D) levels, vitamin D binding protein (DBP) and genetic factors on C3-epimerization of 25(OH)D and follow the tracking of the epimer during one year. DESIGN: Cross-sectional and longitudinal study. METHODS: Data from eight previously conducted, Tromsø based studies (3 observational, 5 randomized controlled trials) were combined. 25(OH)D serum samples were re-analyzed with a LC-MS/MS method that also resolves and measures the metabolite C3-epi-25(OH)D3...
February 21, 2018: Clinical Biochemistry
Yu-Fang Huang, Yi-Hui Wu, Wen-Fang Cheng, Shu-Ling Peng, Wan-Lin Shen, Cheng-Yang Chou
PURPOSE: Malignant ascites of epithelial ovarian cancer (EOC) help identify prognostic biomarkers or mechanisms of tumor progression. Vitamin D-binding protein (DBP) was revealed to be upregulated in EOC ascites in our previous proteomic study. Here, we examined the role of DBP in EOC. EXPERIMENTAL DESIGN: We analyzed ascites, serum, and tissue samples of patients with newly diagnosed EOC to determine the prognostic effects of DBP. We verified DBP function using orthotopic animal models and DBP regulation in ovarian cancer cell lines...
February 23, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Ramank K Marwaha, M K Garg, Sushil Gupta, Mohd Ashraf Ganie, Nandita Gupta, Archna Narang, Manoj Shukla, Preeti Arora, Annie Singh, Aditi Chadha, Ambrish Mithal
BACKGROUND: There is a high prevalence of vitamin D deficiency (VDD) in India. Molecular mechanisms suggest a strong relationship between vitamin D and growth factors. However, there is a paucity of literature with regard to a relationship between insulin-like growth factor-1 (IGF-1), insulin-like growth factor binding protein-3 (IGFBP-3) and vitamin D particularly in subjects with VDD. The objective of the study was to assess the relationship between growth factors and serum vitamin D-parathormone (PTH) status in school girls and study the impact of vitamin D supplementation on growth factors in pre-pubertal girls with VDD...
February 22, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
Letícia de Paula Scalioni, Betânia Rodrigues Dos Santos, Poli Mara Spritzer, Cristiane Alves Villela-Nogueira, Lia Laura Lewis-Ximenez, Priscila Pollo-Flores, Eliane Bordalo Cathalá Esberard, Carlos Eduardo Brandão-Mello, Elisabeth Lampe, Livia Melo Villar
Potential relationship of vitamin D, vitamin D receptor (VDR), and vitamin D binding protein (DBP) have been suggested in the pathophysiology of hepatitis C virus (HCV) infection. The aim of this observational study is to determine vitamin D levels, and VDR and DBP genetic polymorphism according demographic and laboratory data in chronic HCV patients (CHC).A total of 148 CHC patients gave serum samples for testing 25-hydroxyvitamin D (25 (OH)D) level by immunochemiluminometric assay (<20 ng/mL defined as deficient) and donated blood samples to allelic discrimination analysis using TaqMan assays...
February 2018: Medicine (Baltimore)
Charlotte Mortensen, Christian Mølgaard, Hanne Hauger, Michael Kristensen, Camilla T Damsgaard
PURPOSE: To explore whether muscle strength, the insulin-like growth factor axis (IGF-axis), height, and body composition were associated with serum 25-hydroxyvitamin D [25(OH)D] and affected by winter vitamin D supplementation in healthy children, and furthermore to explore potential sex differences. METHODS: We performed a double-blind, placebo-controlled, dose-response winter trial at 55ºN. A total of 117 children aged 4-8 years were randomly assigned to either placebo, 10, or 20 µg/day of vitamin D 3 for 20 weeks...
February 15, 2018: European Journal of Nutrition
Rolf Jorde, Guri Grimnes
BACKGROUND/OBJECTIVES: In observational, but not interventional, studies there are strong associations between serum 25-hydroxyvitamin D (25(OH)D) and serum lipids. The purpose of the present study was to examine potential causes of this association. SUBJECTS/METHODS: A total of 17,411 subjects participating in the seventh survey of the Tromsø Study were included in the cross-sectional study; 5384 subjects who participated in both the sixth and seventh survey were included in the longitudinal study; 2365 subjects who participated in both the fourth and seventh survey were included in the genetic study; and 479 subjects with impaired glucose tolerance were included in the vitamin D binding protein (DBP) analyses...
February 12, 2018: European Journal of Clinical Nutrition
Kinga Musiał, Danuta Zwolińska
OBJECTIVES: Vitamin D-binding protein (VDBP), retinol-binding protein (RBP)4, and heat shock proteins (hsp) are markers of tubular function and apoptosis, accompanying chronic kidney disease (CKD) from its earliest stages. Fractional excretion of proteins with urine is a marker of tubular damage. The aim of study was to assess the usefulness of fractional excretion (FE) of VDBP, RBP4, HSF1 and Hsp27 as markers of tubular damage in the course of CKD. METHODS: The study group consisted of 70 children with CKD stages 1-5, treated conservatively, and 12 age-matched controls with normal kidney function...
February 6, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
Yun Wu, Fen Liu, Xiang Ma, Dilare Adi, Ming-Tao Gai, Xiang Jin, Yi-Ning Yang, Ying Huang, Xiang Xie, Xiao-Mei Li, Zhen-Yan Fu, Bang-Dang Chen, Yi-Tong Ma
The proteome profile changes after acute myocardial infarction (AMI) and the roles played by important protein species remain poorly understood. Here, we constructed a mouse AMI model by ligating the left coronary artery of male C57B/6J mice to investigate the molecular changes after AMI on the protein level. Total proteins of the left ventricle were extracted and quantitatively analyzed by isobaric tags using relative and absolute quantitation (iTRAQ) technologies. The transcript and protein levels of important genes were further validated using quantitative polymerase chain reaction and western blot...
January 5, 2018: Oncotarget
Annette Langer-Gould, Robyn M Lucas, Anny H Xiang, Jun Wu, Lie H Chen, Edlin Gonzales, Samantha Haraszti, Jessica B Smith, Hong Quach, Lisa F Barcellos
Blacks have different dominant polymorphisms in the vitamin D-binding protein (DBP) gene that result in higher bioavailable vitamin D than whites. This study tested whether the lack of association between 25-hydroxyvitamin D (25OHD) and multiple sclerosis (MS) risk in blacks and Hispanics is due to differences in these common polymorphisms (rs7041, rs4588). We recruited incident MS cases and controls (blacks 116 cases/131 controls; Hispanics 183/197; whites 247/267) from Kaiser Permanente Southern California...
February 7, 2018: Nutrients
Angela Baralla, Alessandro G Fois, Elisabetta Sotgiu, Elisabetta Zinellu, Arduino A Mangoni, Salvatore Sotgia, Angelo Zinellu, Pietro Pirina, Ciriaco Carru
PURPOSE: Chronic obstructive pulmonary disease (COPD) is characterized by progressive airflow limitation and abnormal inflammatory response of the lungs to inhaled noxious particles or gases. We used a proteomic approach with 2-DE followed by MALDI TOF-MS analyses in order to identify potential biomarkers in the early stages of the disease: GOLD stage mild and moderate. EXPERIMENTAL DESIGN: Blood plasma was collected from 43 patients with mild and moderate COPD as well as from 43 age and sex matched control subjects...
February 7, 2018: Proteomics. Clinical Applications
Yun Zhu, Peizhong Peter Wang, Guangju Zhai, Bharati Bapat, Sevtap Savas, Jennifer R Woodrow, Peter T Campbell, Yuming Li, Ning Yang, Xin Zhou, Elizabeth Dicks, John R Mclaughlin, Patrick S Parfrey
BACKGROUND: The rs2282679 A>C polymorphism in the vitamin D binding protein gene is associated with lower circulating levels of vitamin D. We investigated associations of this SNP with colorectal cancer (CRC) risk and survival and whether the associations vary by dietary vitamin D intake and tumor molecular phenotype. METHODS: A population-based case-control study identified 637 incident CRC cases (including 489 participants with follow-up data on mortality end-points) and 489 matched controls...
February 6, 2018: BMC Cancer
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