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https://www.readbyqxmd.com/read/28549108/longitudinal-associations-between-vitamin-d-metabolites-and-sarcopenia-in-older-australian-men-the-concord-health-and-aging-in-men-project
#1
Vasant Hirani, Robert G Cumming, Vasi Naganathan, Fiona Blyth, David G Le Couteur, Benjumin Hsu, David J Handelsman, Louise M Waite, Markus J Seibel
Background: To explore the associations between serum 25-hydroxyvitamin D (25D) and 1,25-dihydroxyvitamin D (1,25D) levels at baseline and incidence of sarcopenia over time in older Australian community-dwelling older men. Methods: Of the 1,705 men aged ≥70 years (2005-2007) participating in the Concord Health and Ageing in Men Project, those without sarcopenia at baseline (n = 1,312 for 25D and n = 1,231 for 1,25D), 2 years (n = 1,024 for 25D and n = 956 for 1,25D), and 5-year follow-up (n = 709 for 25D and n = 663 for 1,25D) were included in the study...
May 25, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28549072/predictors-of-25-hydroxyvitamin-d-measured-at-multiple-time-points-in-a-multiethnic-population
#2
Julia A Knight, Jody Wong, David E C Cole, Tim K Lee, Esteban J Parra
The evidence for a relationship of vitamin D with non-skeletal health outcomes is inconsistent. The validity of single or predicted measurements of 25-hydroxyvitamin D (25(OH)D) is unknown as this biomarker is highly seasonally variable. We compared models of 25(OH)D at baseline, at multiple time points throughout the year, and averaged over the year in 309 individuals in Toronto, Canada (43˚ N), 2009-2013. Information and blood samples were collected every two months. Baseline and average concentrations were correlated (r = 0...
May 26, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28548312/vitamin-d-dependent-rickets-type-1b-25-hydroxylase-deficiency-a-rare-condition-or-a-misdiagnosed-condition
#3
Molin A, Wiedemann A, Demers N, Kaufmann M, Do Cao J, Mainard L, Dousset B, Journeau P, Abeguile G, Coudray N, Mittre H, Richard N, Weryha G, Sorlin A, Jones G, Kottler Ml, Feillet F
Vitamin D requires a two-step activation by hydroxylation: the first step is catalyzed by hepatic 25-hydroxylase (CYP2R1, 11p15.2), and the second one is catalyzed by renal 1α-hydroxylase (CYP27B1, 12q13.1), which produces the active hormonal form of 1,25-(OH)2 D. Mutations of CYP2R1 have been associated with Vitamin D-dependent rickets type 1B (VDDR1B), a very rare condition that has only been reported to affect 4 families to date. We describe 7 patients from two unrelated families who presented with homozygous loss-of-function mutations of CYP2R1...
May 26, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28547797/vitamin-d-receptor-agonists-regulate-ocular-developmental-angiogenesis-and-modulate-expression-of-dre-mir-21-and-vegf
#4
Stephanie L Merrigan, Breandán N Kennedy
BACKGROUND AND PURPOSE: Pathological growth of ocular vasculature networks can underpin visual impairment in neovascular age-related macular degeneration, proliferative diabetic retinopathy and retinopathy of prematurity. Our aim was to uncover novel pharmacological regulators of ocular angiogenesis by phenotype-based screening in zebrafish. EXPERIMENTAL APPROACH: A bioactive chemical library of 465 drugs was screened to identify small molecule inhibitors of ocular hyaloid vasculature (HV) angiogenesis in zebrafish larvae...
May 26, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28547646/risk-factors-for-vitamin-d-deficiency-and-impact-of-repletion-in-a-tertiary-care-inflammatory-bowel-disease-population
#5
Samantha Zullow, Guruprasad Jambaulikar, Ankur Rustgi, Sandra Quezada, Raymond K Cross
INTRODUCTION: Many patients with inflammatory bowel disease (IBD) are vitamin D deficient. The purpose of our study was to identify risk factors for vitamin D deficiency in IBD and to assess the impact of vitamin D repletion on disease activity and quality of life (QOL). METHODS: Patients with at least one 25-OH vitamin D level measured between 2004 and 2011 were included. Patients with a level <30 ng/ml at baseline were followed until the time of repletion...
May 25, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28546765/vitamin-d-prohormone-in-the-treatment-of-secondary-hyperparathyroidism-in-patients-with-chronic-kidney-disease
#6
REVIEW
Claudia Friedl, Emanuel Zitt
Secondary hyperparathyroidism (sHPT) represents the adaptive and very often, finally, maladaptive response of the organism to control the disturbed homeostasis of calcium, phosphorus, and vitamin D metabolism caused by declining renal function in chronic kidney disease (CKD). sHPT leads to cardiovascular and extravascular calcifications and is directly linked to an increased risk of cardiovascular morbidity and mortality as well as excess all-cause mortality. Vitamin D plays an important role in the development of sHPT...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28546302/considerations-and-controversies-in-managing-chronic-kidney-disease-an-update
#7
REVIEW
Lalita Prasad-Reddy, Diana Isaacs, Alexander Kantorovich
PURPOSE: Current considerations and controversies surrounding the management of chronic kidney disease (CKD) are reviewed. SUMMARY: Patients diagnosed with CKD require a unique clinical approach to prevent medication toxicities and ensure appropriate management of disease-progressing comorbidities, and they require attention to commonly occurring complications that may affect disease control and impact quality of life, including anemia and CKD-bone-mineral disorder (CKD-BMD)...
June 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28545772/plasma-vitamin-d-and-osteo-cartilaginous-markers-in-italian-males-affected-by-intervertebral-disc-degeneration-focus-on-seasonal-and-pathological-trend-of-type-ii-collagen-degradation
#8
Marco Brayda-Bruno, Marco Viganò, Sabina Cauci, Jacopo A Vitale, Laura de Girolamo, Paola De Luca, Giovanni Lombardi, Giuseppe Banfi, Alessandra Colombini
OBJECTIVE: To evaluate plasma vitamin D and cross-linked C-telopeptides of type I (CTx-I) and type II (CTx-II) collagen concentrations in males with lumbar intervertebral disc degeneration (IVD) compared to healthy controls. Improved knowledge might suggest to optimize the vitamin D status of IVD patients and contribute to clarify mechanisms of cartilage degradation. METHODS: 79 Italian males with lumbar IVD assessed by Magnetic Resonance Imaging (MRI) and 79 age, sex and BMI-matched healthy controls were enrolled...
May 22, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28545072/effect-of-vitamin-d-on-endothelial-progenitor-cells-function
#9
Yoav Hammer, Alissa Soudry, Amos Levi, Yeela Talmor-Barkan, Dorit Leshem-Lev, Joel Singer, Ran Kornowski, Eli I Lev
BACKGROUND: Endothelial progenitor cells (EPCs) are a population of bone marrow-derived cells, which have an important role in the process of endothelialization and vascular repair following injury. Impairment of EPCs, which occurs in patients with diabetes, was shown to be related to endothelial dysfunction, coronary artery disease (CAD) and adverse clinical outcomes. Recent evidence has shown that calcitriol, the active hormone of vitamin D, has a favorable impact on the endothelium and cardiovascular system...
2017: PloS One
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/28543401/oral-anticoagulation-management-in-patients-with-atrial-fibrillation-undergoing-cardiac-implantable-electronic-device-implantation
#11
Eric Black-Maier, Sunghee Kim, Benjamin A Steinberg, Gregg C Fonarow, James V Freeman, Peter R Kowey, Jack Ansell, Bernard J Gersh, Kenneth W Mahaffey, Gerald Naccarelli, Elaine M Hylek, Alan S Go, Eric D Peterson, Jonathan P Piccini
BACKGROUND: Oral anticoagulation (OAC) therapy is associated with increased periprocedural risks after cardiac implantable electronic device (CIED) implantation. Patterns of anticoagulation management involving non-vitamin K antagonist oral anticoagulants (NOACs) have not been characterized. HYPOTHESIS: Anticoagulation strategies and outcomes differ by anticoagulant type in patients undergoing CIED implantation. METHODS: Using the nationwide Outcomes Registry for Better Informed Treatment of Atrial Fibrillation, we assessed how atrial fibrillation (AF) patients undergoing CIED implantation were cared for and their subsequent outcomes...
May 19, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28543073/rapid-response-to-intravenous-vitamin%C3%A2-k-may-obviate-the-need-to-transfuse-prothrombin-complex-concentrates
#12
Tanmay Sahai, Maria F Tavares, Joseph D Sweeney
BACKGROUND: Patients on warfarin who present with bleeding or who require an urgent procedure are commonly treated with intravenous (IV) vitamin K, which is supplemented with repletion of the vitamin K factors using either plasma or a prothrombin complex concentrate (PCC). In some such cases, use of vitamin K alone could be adequate to achieve acceptable hemostasis. STUDY DESIGN AND METHODS: An algorithm emphasizing the use of vitamin K alone in patients presenting with non-life-threatening bleeding was encouraged, with repeat testing of the international normalized ratio (INR) within 5 hours...
May 19, 2017: Transfusion
https://www.readbyqxmd.com/read/28542733/the-pathogenesis-of-dermatomyositis
#13
REVIEW
C Thompson, V Piguet, E Choy
This review looks at the many different factors thought to play a role in idiopathic inflammatory myopathies (IIM), concentrating mainly on the dermatomyositis (DM) subtype. Subject areas addressed include looking at the different clinical features of IIM, paying particular attention to the skin manifestations. There is a discussion around investigations needed with their perceived value, followed by a description of the immunohistochemical findings of DM. This review goes on to address other attributing factors such as genetic associations with the different subtypes of IIM, and environmental factors including infections, ultraviolet radiation and vitamin D deficiency and drugs...
May 24, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28542561/impaired-functional-capacity-of-fetal-endothelial-cells-in-preeclampsia
#14
Lars Brodowski, Jennifer Burlakov, Sarah Hass, Constantin von Kaisenberg, Frauke von Versen-Höynck
OBJECTIVES: Preeclampsia is one of the main contributers to maternal and fetal morbidity and mortality during pregnancy. A history of preeclampsia puts mother and offspring at an increased cardiovascular risk in later life. We hypothesized that at the time of birth functional impairments of fetal endothelial cells can be detected in pregnancies complicated by preeclampsia and that a therapeutic intervention using 1,25 (OH)2 vitamin D3 can reverse the adverse effects of preeclampsia on cell function...
2017: PloS One
https://www.readbyqxmd.com/read/28542407/the-influence-of-persistent-organic-pollutants-in-the-traditional-inuit-diet-on-markers-of-inflammation
#15
L K Schæbel, E C Bonefeld-Jørgensen, H Vestergaard, S Andersen
Concentrations of persistent organic pollutants (POPs) are high in Inuit living predominately on the traditional marine diet. Adverse effects of POPs include disruption of the immune system and cardiovascular diseases that are frequent in Greenland Inuit. We aimed to assess the association between exposure to POPs from the marine diet and inflammation, taking into account other factors such as vitamin D. We invited Inuit and non-Inuit living in settlements or the town in rural East Greenland or in the capital city Nuuk...
2017: PloS One
https://www.readbyqxmd.com/read/28542114/predictors-of-pouchitis-after-ileal-pouch-anal-anastomosis-in-pediatric-onset-ulcerative-colitis
#16
Firas Rinawi, Amit Assa, Rami Eliakim, Yael Mozer Glassberg, Vered Nachmias Friedler, Yaron Niv, Yoram Rosenbach, Ari Silbermintz, Noam Zevit, Raanan Shamir
OBJECTIVES: Few studies have reported on the incidence and risk factors for pouchitis following colectomy and ileal pouch-anal anastomosis (IPAA) in patients with pediatric-onset ulcerative colitis (UC). We aimed to determine clinical predictors for the development of pouchitis following IPAA in this population. PATIENTS AND METHODS: We performed a retrospective chart review of all pediatric UC cases that were diagnosed at the Schneider Children's Medical Center of Israel between 1981 and 2013 and who underwent colectomy during disease course...
May 24, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28541582/definition-of-a-tolerable-upper-intake-level-of-niacin-a-systematic-review-and-meta-analysis-of-the-dose-dependent-effects-of-nicotinamide-and-nicotinic-acid-supplementation
#17
Clara Minto, Maria Gabriella Vecchio, Manfred Lamprecht, Dario Gregori
Nicotinic acid and nicotinamide are soluble compounds of the vitamin B group, widely used to regulate the lipid profile in hyperlipidemic individuals. Higher doses of nicotinic acid are associated with adverse effects, especially flushing. A unique tolerable upper intake level (UL) of nicotinic acid has not been defined. This meta-analysis aims to evaluate adverse effects and their incidence after supplementation with different doses of nicotinic acid and nicotinamide, comparing results with current ULs in Europe and the United States...
May 25, 2017: Nutrition Reviews
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
#18
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/28540886/effect-of-hemodialysis-on-oxidants-and-antioxidant-factors-in-chronic-renal-failure
#19
Ramin Tajbakhsh, Mostafa Qorbani, Golbarg Mehrpour, Mitra Rahimzadeh, Mohammad Mehdi Azimzadeh, Hossein Mirmiranpour
The current study was conducted to assess the effect of hemodialysis (HD) on the status of plasma oxidants and antioxidants among patients with end-stage renal disease (ESRD). These parameters can have an influence on the HD process and can also be useful for follow-up of these patients. The participants of this cross-sectional study comprised 91 patients with a mean age of 51.1 ± 8.2 years on chronic HD with kt/v between 1.2 and 1.4. The etiology of ESRD in these patients was as follows: diabetes mellitus in 39, hypertension in 35, and glomerulonephritis in 17 patients...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28540270/fgf-23-klotho-and-vitamin-d-levels-in-scleroderma
#20
Ravan Ahmadi, Mehrzad Hajialilo, Amir Ghorbanihaghjo, Ali Mota, Sina Raeisi, Nasrin Bargahi, Mohammad Valilo, Farahnaz Askarian
BACKGROUND: Scleroderma is a chronic connective tissue disease of unknown etiology. Vitamin D and parathyroid hormone (PTH) that play particular functions in calcium and phosphate homeostasis may be involved in the etiology of this disorder. Klotho, the co-receptor of the fibroblast growth factor 23 (FGF-23), can interfere with calcium and phosphate metabolism. The purpose of this study was to evaluate serum Klotho, FGF-23, intact PTH (iPTH) and vitamin D levels in scleroderma patients compared with the healthy controls...
April 2017: Iranian Journal of Public Health
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