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Vitamin d binding protein

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https://www.readbyqxmd.com/read/28620062/urine-biomarkers-to-predict-response-to-lupus-nephritis-therapy-in-children-and-young-adults
#1
Hermine I Brunner, Michael R Bennett, Gaurav Gulati, Khalid Abulaban, Marisa S Klein-Gitelman, Stacy P Ardoin, Lori B Tucker, Kelly A Rouster-Stevens, David Witte, Jun Ying, Prasad Devarajan
OBJECTIVE: To delineate urine biomarkers that forecast response to therapy of lupus nephritis (LN). METHODS: Starting from the time of kidney biopsy, patients with childhood-onset systemic lupus erythematosus who were diagnosed with LN were studied serially. Levels of 15 biomarkers were measured in random spot urine samples, including adiponectin, α-1-acid glycoprotein (AGP), ceruloplasmin, hemopexin, hepcidin, kidney injury molecule 1, monocyte chemotactic protein-1, lipocalin-like prostaglandin D synthase (LPGDS), transforming growth factor-β (TGF-β), transferrin, and vitamin D binding protein (VDBP)...
June 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28615961/the-role-of-novel-biomarkers-in-childhood-idiopathic-nephrotic-syndrome-a-narrative-review-of-published-evidence
#2
REVIEW
Samuel N Uwaezuoke
Two histological subtypes of idiopathic nephrotic syndrome are commonly recognized in children, namely minimal change nephropathy and focal segmental glomerulosclerosis. Children with minimal change nephropathy (the majority of whom are steroid-sensitive) and focal segmental glomerulosclerosis (the majority of whom are steroid-resistant) require early identification in order to ensure appropriate therapeutic intervention and better outcome. Although renal biopsy and histology remain the ideal diagnostic steps to identify these histological subtypes, reports indicate that serum and urinary biomarkers are now being utilized in the investigation of childhood idiopathic nephrotic syndrome...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28606476/vitamin-d-supplement-ameliorates-hippocampal-metabolism-in-diabetic-rats
#3
Feng Guo, Hao Yue, Lei Wang, Chenzhao Ding, Lina Wu, Yang Wu, Fabao Gao, Guijun Qin
Vitamin D deficiency induced by diabetes mellitus is tightly associated with neurodegenerative diseases, but the mechanism is still unknown. Endoplasmic reticulum stress (ER stress) is involved in hippocampal lesion and promote diabetic neuropathy, so we focus on the effects of 1, 25-dihydroxy vitamin D3 on ER stress in hippocampus of diabetic rats. Streptozotocin (STZ)-induced diabetic rats were administrated with different doses of vitamin D and divided into 3 groups: high, low, and blank, compared to wild-type rats which were received the same treatment...
June 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28601647/metalloproteomic-and-differential-expression-in-plasma-in-a-rat-model-of-type-1-diabetes
#4
Camila Pereira Braga, José Cavalcante Souza Vieira, Aline de Lima Leite, Ana Angélica Henrique Fernandes, Marília Afonso Rabelo Buzalaf, Pedro de Magalhães Padilha
Type 1 diabetes is characterized by hyperglycemia, which in the chronic stage is associated with abnormalities in lipids, protein and, carbohydrate metabolism, as well as oxidative stress. New strategies for prevention and treatment are needed, as type 1 diabetes affects life quality and survival, and involves high-cost treatment. Proteomic and metalloproteomic studies can elucidate the functional and physiological aspects of biomolecules. In the present study, differential proteomics was used to identify potential biomarkers of diabetes in rat plasma associated with copper, selenium, zinc, and magnesium fractionation in control and diabetic rats, as well as diabetic rats treated with insulin...
June 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28592917/persistent-unresolved-inflammation-in-the-mecp2-308-female-mutated-mouse-model-of-rett-syndrome
#5
Alessio Cortelazzo, Claudio De Felice, Bianca De Filippis, Laura Ricceri, Giovanni Laviola, Silvia Leoncini, Cinzia Signorini, Monica Pescaglini, Roberto Guerranti, Anna Maria Timperio, Lello Zolla, Lucia Ciccoli, Joussef Hayek
Rett syndrome (RTT) is a rare neurodevelopmental disorder usually caused by mutations in the X-linked gene methyl-CpG-binding protein 2 (MECP2). Several Mecp2 mutant mouse lines have been developed recapitulating part of the clinical features. In particular, Mecp2-308 female heterozygous mice, bearing a truncating mutation, are a validated model of the disease. While recent data suggest a role for inflammation in RTT, little information on the inflammatory status in murine models of the disease is available...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28585774/a-physiologically-based-pharmacokinetic-model-of-vitamin-d
#6
Megan E Sawyer, Hien T Tran, Marina V Evans
Despite the plethora of studies discussing the benefits of vitamin D on physiological functioning, few mathematical models of vitamin D predict the response of the body on low-concentration supplementation of vitamin D under sunlight-restricted conditions. This study developed a physiologically based pharmacokinetic (PBPK) model utilizing published human data on the metabolic cascade of orally derived, low-concentration (placebo, 5 μg and 10 μg) supplementation of vitamin D over the course of 28 days in the absence of sunlight...
June 6, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28578159/low-retinol-binding-protein-and-vitamin-d-levels-are-associated-with-severe-outcomes-in-children-hospitalized-with-lower-respiratory-tract-infection-and-respiratory-syncytial-virus-or-human-metapneumovirus-detection
#7
Julia L Hurwitz, Bart G Jones, Rhiannon R Penkert, Shane Gansebom, Yilun Sun, Li Tang, Anna M Bramley, Seema Jain, Jonathan A McCullers, Sandra R Arnold
Retinol binding protein and vitamin D were measured in children aged <5 years hospitalized with lower respiratory tract infection and respiratory syncytial virus and/or human metapneumovirus detections. Low vitamin levels were observed in 50% of the children and were associated with significantly elevated risk of the need for intensive care unit admission and invasive mechanical ventilation.
May 31, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28576851/urinary-tamm-horsfall-protein-albumin-vitamin-d-binding-protein-and-retinol-binding-protein-as-early-biomarkers-of-chronic-kidney-disease-in-dogs
#8
Fernanda Chacar, Márcia Kogika, Talita R Sanches, Douglas Caragelasco, Cínthia Martorelli, Camila Rodrigues, Jose Manuel C Capcha, Dennis Chew, Lúcia Andrade
Proteinuria is a marker and mediator of chronic kidney disease (CKD). In clinical practice, the urinary protein-to-creatinine ratio (UP/C) is of limited usefulness, because it indicates only the magnitude of proteinuria and not the origin of the loss (glomerular or tubular). The complete assessment of proteinuria includes quantitative and qualitative evaluations, both of which are required in order to optimize the therapy. In addition to measuring the UP/C, we performed SDS-PAGE and western blotting to determine the expression of albumin, vitamin D-binding protein (VDBP), retinol-binding protein (RBP), and Tamm-Horsfall protein (THP) in urine samples of 49 dogs: healthy (control) dogs (n = 9); and dogs with CKD (n = 40), stratified by stage...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28575224/response-to-antenatal-cholecalciferol-supplementation-is-associated-with-common-vitamin-d-related-genetic-variants
#9
Rebecca J Moon, Nicholas C Harvey, Cyrus Cooper, Stefania D'Angelo, Elizabeth M Curtis, Sarah R Crozier, Sheila J Barton, Sian M Robinson, Keith M Godfrey, Nikki J Graham, John W Holloway, Nicholas J Bishop, Stephen Kennedy, Aris T Papageorghiou, Inez Schoenmakers, Robert Fraser, Saurabh V Gandhi, Ann Prentice, Hazel M Inskip, M Kassim Javaid
Context: Single nucleotide polymorphisms (SNP) in genes related to vitamin D metabolism have been associated with serum 25-hydroxyvitamin D [25(OH)D] concentration, but these relationships have not been examined following antenatal cholecalciferol supplementation. Objective: To determine whether SNPs in DHCR7, CYP2R1, CYP24A1 and GC are associated with the response to gestational cholecalciferol supplementation. Design: Within-randomization-group analysis of the MAVIDOS trial of antenatal cholecalciferol supplementation...
May 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28543886/human-hairless-protein-roles-in-skin-hair-and-emerging-connections-to-brain-and-other-cancers
#10
Anas Maatough, G Kerr Whitfield, Lemlem Brook, David Hsieh, Patricia Palade, Jui-Cheng Hsieh
The mammalian hairless protein (HR) is a 130 kDa nuclear transcription factor that is essential for proper skin and hair follicle function. Previous studies have focused on the role of HR in skin maintenance and hair cycling. However, hairless gene (HR) is also expressed in brain and other tissues, where its role remains poorly understood. HR has been reported to contain functional domains that potentially serve in DNA binding, histone demethylation, nuclear translocation signal, and protein-protein interactions...
May 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28541149/characterization-of-equine-vitamin-d-binding-protein-development-of-an-assay-and-assessment-of-plasma-concentrations-of-the-protein-in-healthy-horses-and-horses-with-gastrointestinal-disease
#11
Tina H Pihl, Stine Jacobsen, Dorthe T Olsen, Peter Højrup, Astrid Grosche, David E Freeman, Pia H Andersen, Gunnar Houen
OBJECTIVE To purify and characterize equine vitamin D-binding protein (VDBP) from equine serum and to evaluate plasma concentrations of VDBP in healthy horses and horses with gastrointestinal injury or disease. ANIMALS 13 healthy laboratory animals (8 mice and 5 rabbits), 61 healthy horses, 12 horses with experimentally induced intestinal ischemia and reperfusion (IR), and 59 horses with acute gastrointestinal diseases. PROCEDURES VDBP was purified from serum of 2 healthy horses, and recombinant equine VDBP was obtained through a commercial service...
June 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28538382/improvement-of-fatigue-after-vitamin-d-supplementation-in-kidney-transplant-recipients
#12
Bin Han, Xiao Wu, Yong Guo
Low serum levels of vitamin D have been associated with fatigue in both healthy and clinical populations. Our aim was to evaluate the effect of vitamin D supplementation on fatigue in kidney transplant recipients (KTRs). In total, 137 patients after kidney transplant and 119 age- and sex-matched healthy volunteers were recruited. Serum levels of 25-hydroxyvitamin D (25(OH)D) were measured by competitive protein-binding assay. Fatigue was assessed using the subscale fatigue of the Checklist Individual Strength (CIS)...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28537926/vitamin-d3-induces-vitamin-d-receptor-and-hdac11-binding-to-relieve-the-promoter-of-the-tight-junction-proteins
#13
Feng-Hua Liu, Shan-Shan Li, Xiao-Xi Li, Shuai Wang, Mao-Gang Li, Li Guan, Tian-Gang Luan, Zhi-Gang Liu, Zhan-Ju Liu, Ping-Chang Yang
Intestinal epithelial barrier dysfunction and vitamin D (VitD)-deficiency play a critical role in a large number of diseases. The histone deacetylases (HDAC) are associated with a large number of immune diseases. This study tests a hypothesis that the interaction between VitD and HDAC is associated with the regulation of epithelial barrier functions. In this study, human intestinal epithelial cell line, T84 cells, was cultured into monolayers to be used as a model to test the epithelial barrier functions. We observed that in a VitD-deficient environment, the T84 monolayer barrier function was compromised...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28523927/retinoid-bms411-4-5-5-dimethyl-8-phenyl-5-6-dihydronaphthalen-2-yl-carbonyl-amino-benzoic-acid-a-potential-inhibitor-of-ns5a-protein-of-hepatitis-c-virus-a-candidate-for-combined-therapy-of-hepatitis-c-infection
#14
S Ibrahim, M J Asad, R T Mahmood, F H Wattoo, S Akhter, D Shahwar
Hepatitis C infection is a serious health issue worldwide caused by hepatitis C virus (HCV). There is an urgent need of search for new direct acting antiviral drugs due to the rapid development of drug resistance. The HCV NS5A protein is involved in creating resistance against antiviral therapy and there are also many reports that vitamin A deficiency is associated with non-responsiveness to antiviral treatment in HCV infected patients. So the present in silico study was aimed to find the relation between vitamin A deficiency and the NS5A protein's function in antiviral resistance...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28514126/-haptoglobin-polymorphism-as-an-independent-predictor-of-diabetic-nephropathy-and-retinopathy
#15
Inbal Dahan, Nadia Thauho, Farid Nakhoul, Nakhoul Nakhoul, Hanin Jabaly, Evgeny Farber
The antioxidant protein haptoglobin (Hp) plays a major role in the development of diabetic complications such as diabetic nephropathy and retinopathy. In humans, two alleles of Hp were identified: 1 and 2 with three possible genotypes: 1-1, 2-1, and 2-2. The Hp protein products differ in their biochemical and biophysical properties, such as their antioxidant capacity. The Hp1 protein is superior to the Hp2 protein in binding to free hemoglobin and neutralizing its oxidative potential and the accompanying renal and retinal injury...
July 2016: Harefuah
https://www.readbyqxmd.com/read/28502635/identification-of-vitreous-proteins-in-retinopathy-of-prematurity
#16
Koji Sugioka, Akio Saito, Shunji Kusaka, Kazuki Kuniyoshi, Yoshikazu Shimomura
Retinopathy of prematurity (ROP) is a disorder of blood vessels in the retina developed in premature infants and the leading cause of the blindness in children. Proteomic analysis was performed to identify vitreous proteins specific to patients with ROP. Vitreous humor samples were obtained from three patients with ROP and two patients with congenital cataract, the latter included as a control group. The vitreous samples were separated by 2D-PAGE and the proteins running as definitive spots were identified by MALDI-TOF MS spectrometry...
May 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28492143/a-direct-assay-for-measuring-free-25-hydroxyvitamin-d
#17
Heureux Nicolas, Ernst Lindhout, Leon Swinkels
Recent studies suggest that the concentration and genotype of vitamin D binding protein (VDBP) are important factors that determine the bioavailability of 25-hydroxyvitamin D [25(OH)D] in blood. Accumulating data indicate that, e.g., in pregnant women, hemodialysis patients, chronic kidney disease, liver failure, and bladder and pancreatic cancers, the measurement of free 25(OH)D in serum provides more relevant diagnostic information than measurement of total 25(OH)D. The aim of this study was to develop and validate an ELISA for direct measurement of free 25(OH)D in serum...
May 11, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28492134/simplified-25-hydroxyvitamin-d-standardization-and-optimization-in-dried-blood-spots-by-lc-ms-ms
#18
Andrew J Makowski, John A Rathmacher, Ronald L Horst, Christopher T Sempos
Previous studies have assessed vitamin D status based on the 25-hydroxyvitamin D [25(OH)D] concentration measured in samples from dried blood spots (DBSs). In 40 individuals participating in a clinical study, we compared 25(OH)D levels measured from DBSs and in serum using an LC-MS/MS reference procedure in collaboration with the Vitamin D Standardization Program. The main objective was to simplify and optimize current methods to produce an assay that can be used as a screening tool for 25(OH)D concentration assessment without derivatization...
May 11, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28492133/current-assays-to-determine-free-25-hydroxyvitamin-d-in-serum
#19
Sofie Malmstroem, Lars Rejnmark, John B Imboden, Dolores M Shoback, Daniel D Bikle
The 25-hydroxylated metabolite of vitamin D is the best clinical indicator of vitamin D status. For many years, emphasis has been on measuring total levels of 25-hydroxyvitamin D [25(OH)D], but recently, interest in measuring free 25(OH)D as a potentially better marker of vitamin D status has arisen. Since the 1980s when the first measurements of free 25(OH)D were made, little progress has been made in the development of rapid, reliable methods to determine the levels of free 25(OH)D. For many years, assessment of free 25(OH)D relied on calculations using levels of total 25(OH)D, albumin, and vitamin D binding protein (VDBP), for which many assays exist...
May 11, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28483970/total-and-free-circulating-vitamin-d-and-vitamin-d-binding-protein-in-relation-to-colorectal-cancer-risk-in-a-prospective-study-of-african-americans
#20
Shaneda Warren Andersen, Xiao-Ou Shu, Qiuyin Cai, Nikhil K Khankari, Mark D Steinwandel, Peter W Jurutka, William J Blot, Wei Zheng
BACKGROUND: Previous studies rarely evaluated the associations between vitamin D binding protein and free vitamin D with colorectal cancer (CRC) risk. We assessed these biomarkers and total 25-hydroxyvitamin D in relation to CRC risk in a sample of African Americans. METHODS: Cases comprised 224 African American participants of the Southern Community Cohort Study diagnosed with incident CRC. Controls (N=440) were selected through incidence density sampling and matched to cases on age, sex, and race...
May 8, 2017: Cancer Epidemiology, Biomarkers & Prevention
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