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https://www.readbyqxmd.com/read/28742387/vitamin-d-loaded-nanostructured-lipid-carrier-nlc-a-new-strategy-for-enhancing-efficacy-of-doxorubicin-in-breast-cancer-treatment
#1
Mehdi Sabzichi, Jamal Mohammadian, Maryam Mohammadi, Farhad Jahanfar, Ali Akbar Movassagh Pour, Hamed Hamishehkar, Alireza Ostad-Rahimi
The dangerous dose-dependent side effects of anticancer agents triggered the finding of new approaches for elevated chemotherapy efficacy. This study investigated the potential application of nanostructured lipid careers (NLCs) in increasing vitamin D3 (VitD) effectiveness in breast cancer cell (MCF-7) in concurrent administration with doxorubicin (Dox). VitD-loaded NLCs were characterized by particle size, zeta potential, Fourier transform infrared spectroscopy, and scanning electron microscope. Cytotoxicity and molecular effects of formulation were evaluated by MTT, DAPI staining, flow cytometry, and real-time quantitative PCR assays...
July 25, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28740525/the-use-of-cholecalciferol-in-patients-with-hip-fracture
#2
Luisella Cianferotti, Simone Parri, Giorgio Gronchi, Roberto Civinini, Maria Luisa Brandi
INTRODUCTION: Major osteoporotic fractures are steadily increasing due to population aging. Programs of secondary prevention against refracture are essential to decrease morbidity and mortality and the cost for individuals and the society. Vitamin D supplementation and optimization of calcium intake are of a pivotal importance to start specific osteoporosis treatment and for its safety and efficacy. Cholecalciferol is the most widely employed drug for vitamin D supplementation. PURPOSE: Aim of this study was to assess the trends in the use of vitamin D supplements containing cholecalciferol in the population of hip fracture patients older than 65 years, resident in the region of Tuscany (Italy) in the years 2011-2015 and to describe vitamin D status in a subgroup of this individuals directly referred to a bone clinic for further evaluation after hip osteoporotic fracture...
January 2017: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28737142/prevention-and-treatment-of-vitamin-d-and-calcium-deficiency-in-children-and-adolescents-indian-academy-of-pediatrics-iap-guidelines
#3
Anuradha Khadilkar, Vaman Khadilkar, Jagdish Chinnappa, Narendra Rathi, Rajesh Khadgawat, S Balasubramanian, Bakul Parekh, Pramod Jog
JUSTIFICATION: Vitamin D deficiency (VDD) is being increasingly reported from India from all age-groups. Reports suggest that VDD affects all age groups, from neonates to adolescents. Further, habitually low calcium intakes are also reported in Indian children. Given the multiple guidelines, peculiarities of Indian circumstances, changing lifestyles, and lack of fortification, the Indian Academy of Pediatrics (IAP) felt the need for a Practice Guideline for Pediatricians for the prevention and treatment of vitamin D and calcium deficiency in children and adolescents...
July 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28736298/calcitriol-mediated-reduction-in-ifn-%C3%AE-output-in-t-cell-large-granular-lymphocytic-leukemia-requires-vitamin-d-receptor-upregulation
#4
M Paige Kulling, C Kristine Olson, L Thomas Olson, E Cait Hamele, N Kathryn Carter, J David Feith, P Thomas Loughran
Constitutively activated STAT1 and elevated IFN-γ are both characteristic of T cell large granular lymphocytic leukemia (T-LGLL), a rare incurable leukemia with clonal expansion of cytotoxic T cells due to defective apoptosis. Interferon gamma (IFN-γ) is an inflammatory cytokine that correlates with worse progression and symptomology in multiple autoimmune diseases and cancers. In canonical IFN-γ-STAT1 signaling, IFN-γ activates STAT1, a transcription factor, via phosphorylation of tyrosine residue 701 (p-STAT1)...
July 20, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28734988/can-adverse-effects-of-excessive-vitamin-d-supplementation-occur-without-developing-hypervitaminosis-d
#5
REVIEW
Mohammed S Razzaque
Vitamin D is a fat-soluble hormone that has endocrine, paracrine and autocrine functions. Consumption of vitamin D-supplemented food & drugs have increased significantly in the last couple of decades due to campaign and awareness programs. Despite such wide use of artificial vitamin D supplements, serum levels of 25 hydroxyvitamin D [25(OH)D] does not always reflect the amount of uptake. In contrast to the safe sunlight exposure, prolonged and disproportionate consumption of vitamin D supplements may lead to vitamin D intoxication, even without developing hypervitaminosis D...
July 19, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28731372/exploring-the-effect-of-vitamin-d3-supplementation-on-the-anti-ebv-antibody-response-in-relapsing-remitting-multiple-sclerosis
#6
Linda Rolf, Anne-Hilde Muris, Amandine Mathias, Renaud Du Pasquier, Inga Koneczny, Giulio Disanto, Jens Kuhle, Sreeram Ramagopalan, Jan Damoiseaux, Joost Smolders, Raymond Hupperts
BACKGROUND: Epstein-Barr virus (EBV) infection and vitamin D insufficiency are potentially interacting risk factors for multiple sclerosis (MS). OBJECTIVES: To investigate the effect of high-dose vitamin D3 supplements on antibody levels against the EBV nuclear antigen-1 (EBNA-1) in patients with relapsing-remitting multiple sclerosis (RRMS) and to explore any underlying mechanism affecting anti-EBNA-1 antibody levels. METHODS: This study utilized blood samples from a randomized controlled trial in RRMS patients receiving either vitamin D3 (14,000 IU/day; n = 30) or placebo ( n = 23) over 48 weeks...
July 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28728941/comparison-of-calcimimetic-r568-and-calcitriol-in-mineral-homeostasis-in-the-hyp-mouse-a-murine-homolog-of-x-linked-hypophosphatemia
#7
Maren Leifheit-Nestler, Julia Kucka, Emi Yoshizawa, Geert Behets, Patrick D'Haese, Christian Bergen, Martin Meier, Dagmar-Christiane Fischer, Dieter Haffner
X-linked hypophosphatemia (XLH) caused by mutations in the Phex gene is the most common human inherited phosphate wasting disorder characterized by enhanced synthesis of fibroblast growth factor 23 (FGF23) in bone, renal phosphate wasting, 1,25(OH)2D3 (1,25D) deficiency, rickets and osteomalacia. Here we studied the effects of calcimimetic R568 and calcitriol treatment in the Hyp mouse, a murine homolog of XLH. We hypothesized that mineral homeostasis is differentially affected by R568 and 1,25D with respect to the PTH-vitamin D-FGF23-Klotho axis and bone health...
July 18, 2017: Bone
https://www.readbyqxmd.com/read/28727093/effects-of-intravenous-lipopolysaccharide-administration-on-feed-intake-ruminal-forage-degradability-and-liquid-parameters-and-physiological-responses-in-beef-cattle
#8
K D Lippolis, R F Cooke, K M Schubach, R S Marques, D W Bohnert
This experiment compared DMI, ruminal forage degradability, and liquid parameters as well as physiological responses in beef cattle receiving a lipopolysaccharide (LPS) challenge or not. Eight ruminally cannulated Angus × Hereford steers (485 ± 16 kg BW) were housed in individual pens on d -7, ranked by BW, and allocated to 1 of 2 treatments administered on d 0: 1) an intravenous (i.v.) bolus dose (0.5 μg/kg of BW, diluted in 5 mL of 0.9% sterile saline) of bacterial LPS ( 0111:B4) or 2) a 5-mL i.v. injection of 0...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28723645/altered-micrornas-expression-in-t-cells-of-patients-with-sle-involved-in-the-lack-of-vitamin-d
#9
Dao-Jun Chen, Lan-Ju Li, Xiao-Ke Yang, Tao Yu, Rui-Xue Leng, Hai-Feng Pan, Dong-Qing Ye
Vitamin D has been recognized as a potent immunomodulator and its deficiency is common in different population groups including patients with SLE. As miRNAs regulation plays a significant role in SLE, the present study aimed to evaluate the association between vitamin D status and miRNAs levels in patients with SLE. The serum concentrations of vitamin D (25-hydroxyvitamin D) and the levels of six miRNAs in T cells from patients with SLE were measured in 42 SLE cases and 48 healthy controls. Vitamin D treatment was also performed in isolated and cultured T cells from SLE patients in different times and doses...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28721216/switch-to-restoration-therapy-in-a-testosterone-treated-central-hypogonadism-with-erythrocytosis
#10
B Cangiano, C Cacciatore, L Persani, M Bonomi
We describe a case of severe erythrocytosis caused by testosterone replacement therapy in a 66-year-old man affected with hypogonadotropic hypogonadism (HH) determining osteoporosis, resolved by switching to restoration therapy with clomiphene citrate. The patient complained fatigue, loss of libido and defective erections and a spontaneous vertebral fracture despite bisphosphonate therapy and vitamin D supplementation. The examinations proved isolated HH and he was therefore treated with testosterone gel with regression of specific manifestations but elevated hemoglobin and hematocrit values...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28719693/effect-of-high-dose-vs-standard-dose-wintertime-vitamin-d-supplementation-on-viral-upper-respiratory-tract-infections-in-young-healthy-children
#11
Mary Aglipay, Catherine S Birken, Patricia C Parkin, Mark B Loeb, Kevin Thorpe, Yang Chen, Andreas Laupacis, Muhammad Mamdani, Colin Macarthur, Jeffrey S Hoch, Tony Mazzulli, Jonathon L Maguire
Importance: Epidemiological studies support a link between low 25-hydroxyvitamin D levels and a higher risk of viral upper respiratory tract infections. However, whether winter supplementation of vitamin D reduces the risk among children is unknown. Objective: To determine whether high-dose vs standard-dose vitamin D supplementation reduces the incidence of wintertime upper respiratory tract infections in young children. Design, Setting, and Participants: A randomized clinical trial was conducted during the winter months between September 13, 2011, and June 30, 2015, among children aged 1 through 5 years enrolled in TARGet Kids!, a multisite primary care practice-based research network in Toronto, Ontario, Canada...
July 18, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28718949/high-dosage-of-vitamin-d-regulates-the-energy-metabolism-and-increases-insulin-sensitivity-but-are-associated-with-high-levels-of-kidney-damage
#12
Rafael Calais Gaspar, José Diego Botezelli, Gabriel Keine Kuga, Vitor Rosetto Muñoz, Andressa Coope, Rodrigo Martins Pereira, Adelino Sanchez Ramos da Silva, Dennys Esper Cintra, Leandro Pereira de Moura, Eduardo Rochete Ropelle, José Rodrigo Pauli
Preclinical Research Metabolic disorders are responsible for more than 60% of all deaths worldwide. Calcitriol or vitamin D (vitD) deficiency is associated with a large proportion of these diseases is an important therapeutic target for exploration. This study evaluated the administration of high doses of vitD (3000 IU/kg) in obese and insulin-resistant C57BL/6J mice. Our results demonstrated that although high doses of vitD provided metabolic benefits such as increased insulin sensitivity and decreased body mass, this was associated with significant damage in the kidneys of obese mice...
July 18, 2017: Drug Development Research
https://www.readbyqxmd.com/read/28714882/vitamin-d-supplementation-enhances-c18-dihydro-ceramide-levels-in-type-2-diabetes-patients
#13
Alexander Koch, Georgios Grammatikos, Sandra Trautmann, Yannick Schreiber, Dominique Thomas, Franziska Bruns, Josef Pfeilschifter, Klaus Badenhoop, Marissa Penna-Martinez
Sphingolipids are characterized by a broad range of bioactive properties. Particularly, the development of insulin resistance, a major pathophysiological hallmark of Type 2 Diabetes mellitus (T2D), has been linked to ceramide signaling. Since vitamin D supplementation may slow down T2D progression by improving glucose concentrations and insulin sensitivity, we investigated whether vitamin D supplementation impacts on plasma sphingolipid levels in T2D patients. Thus, plasma samples of 59 patients with non-insulin-requiring T2D from a placebo-controlled, randomized, and double-blind study were retrospectively analyzed...
July 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28711640/recent-advances-in-tpgs-based-nanoparticles-of-docetaxel-for-improved-chemotherapy
#14
REVIEW
Hira Choudhury, Bapi Gorain, Manisha Pandey, Santosh Ashok Kumbhar, Rakesh Kumar Tekade, Arun K Iyer, Prashant Kesharwani
Docetaxel (DTX) is one of the important antitumor drugs, being used in several common chemotherapies to control leading cancer types. Severe toxicities of the DTX are prominent due to sudden parenteral exposure of desired loading dose to maintain the therapeutic concentration. Field of nanotechnology is leading to resist sudden systemic exposure of DTX with more specific delivery to the site of cancer. Further nanometric size range of the formulation aid for prolonged circulation, thereby extensive exposure results better efficacy...
July 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28709403/the-role-of-vitamin-d-in-pre-eclampsia-a-systematic-review
#15
Juhi M Purswani, Pooja Gala, Pratibha Dwarkanath, Heather M Larkin, Anura Kurpad, Saurabh Mehta
BACKGROUND: The etiology of pre-eclampsia (PE) is not yet fully understood, though current literature indicates an upregulation of inflammatory mediators produced by the placenta as a potential causal mechanism. Vitamin D is known to have anti-inflammatory properties and there is evidence of an inverse relationship between dietary calcium intake and the incidence of PE. Evidence of the role of vitamin D status and supplementation in the etiology and prevention of PE is reviewed in this article along with identification of research gaps to inform future studies...
July 15, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28708471/use-of-bisphosphonates-and-risk-of-breast-cancer-in-a-french-cohort-of-postmenopausal-women
#16
Agnès Fournier, Sylvie Mesrine, Amandine Gelot, Guy Fagherazzi, Laura Baglietto, Françoise Clavel-Chapelon, Marie-Christine Boutron-Ruault, Nathalie Chabbert-Buffet
Purpose To assess whether bisphosphonate (BP) use is associated with decreased breast cancer incidence in a cohort of postmenopausal women. Methods The study population included 64,438 postmenopausal women participating in the French E3N (Etude Epidémiologique auprès de femmes de la Mutuelle Générale de l'Education Nationale) prospective cohort, with data self-reported in biennial questionnaires matched with data from a drug reimbursement database. Exposure to BPs and the use of other osteoporosis treatments during follow-up were determined using reimbursement data...
July 14, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28705401/-are-general-practitioners-in-paris-and-surrounding-areas-reticent-about-direct-oral-anticoagulants
#17
C Caucanas, D Sfeir, C Blas-Châtelain, P Priollet
OBJECTIVE: Determine how familiar general practitioners (GPs) working in Paris and surrounding areas are with prescriptions for direct oral anticoagulants (DOACs). MATERIAL AND METHOD: A questionnaire sent to 189 GP working in Paris and surrounding areas yielded 100 responses. Data collected included a brief summary of sociodemographic items, comparative knowledge about DOACs and vitamin K antagonists (VKAs), and responses to two clinical situations for DOAC prescriptions (renewal of a first prescription)...
May 2017: J Med Vasc
https://www.readbyqxmd.com/read/28704190/modulating-effects-of-cholecalciferol-treatment-on-estrogen-deficiency-induced-anxiety-like-behavior-of-adult-female-rats
#18
Julia Fedotova, Daria Zarembo, Jozef Dragasek, Martin Caprnda, Peter Kruzliak, Tatyana Dudnichenko
BACKGROUND: Vitamin D can be one of the candidate substances that are used as additional supplementation in the treatment of anxiety-related disorders in women with estrogen imbalance. MATERIALS AND METHODS: The aim of the present study was to examine the effects of chronic cholecalciferol administration (1.0, 2.5 or 5.0 mg/kg/day, s.c.) on the anxiety-like behavior and monoamines levels in the rat hippocampus following ovariectomy in female rats. Cholecalciferol was given to ovariectomized (OVX) rats and OVX rats treated with 17β-estradiol (17β-E2, 0...
June 1, 2017: Folia Medica
https://www.readbyqxmd.com/read/28701388/should-we-restrict-vitamin-a-intake-a-minor-contributor-to-plasma-retinol-turnover-when-using-retinol-isotope-dilution-equations-to-estimate-an-individual-s-vitamin-a-status-or-should-vitamin-a-balance-be-maintained
#19
Jennifer Lynn Ford, Joanne Balmer Green, Michael H Green
We discuss whether dietary vitamin A intake should be restricted or maintained at balance when retinol isotope dilution equations are applied to estimate an individual's vitamin A total body stores (TBS) after oral administration of a labeled dose of vitamin A. Although, at first glance, restriction makes sense as a way to prevent dilution of tracer in plasma, further investigation of the assumptions underlying the widely used isotope dilution equation presented by Olson's laboratory in 1989, as well as the compartmental modeling results presented in this article, indicate that, in fact, restriction leads to an incorrect prediction of TBS if steady state retinol isotope dilution equations are applied at the traditional time (21 d)...
July 12, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28698476/acute-supplementation-with-high-dose-vitamin-d3-increases-serum-anti-m%C3%A3-llerian-hormone-in-young-women
#20
Nicola A Dennis, Lisa A Houghton, Michael W Pankhurst, Michelle J Harper, Ian S McLennan
Anti-Müllerian hormone (AMH) is a paracrine regulator of ovarian follicles. Vitamin D (Vit D) regulates AMH production in vitro, but its role as a regulator of ovarian AMH production is contentious. If Vit D influences ovarian AMH production, then an acute rise in Vit D level should lead to an acute rise in circulating AMH levels. This hypothesis was tested with a randomized double-blind design, with 18-25-year-old women recruited from the community. The study was conducted in early spring, when the marker of Vit D level (25-hydroxyvitamin D, 25(OH)D) tends to be at its nadir...
July 8, 2017: Nutrients
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