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Vitamin d survival

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https://www.readbyqxmd.com/read/29143766/assessment-of-micronutrient-status-in-critically-ill-children-challenges-and-opportunities
#1
REVIEW
Duy T Dao, Lorenzo Anez-Bustillos, Bennet S Cho, Zhilling Li, Mark Puder, Kathleen M Gura
Micronutrients refer to a group of organic vitamins and inorganic trace elements that serve many functions in metabolism. Assessment of micronutrient status in critically ill children is challenging due to many complicating factors, such as evolving metabolic demands, immature organ function, and varying methods of feeding that affect nutritional dietary intake. Determination of micronutrient status, especially in children, usually relies on a combination of biomarkers, with only a few having been established as a gold standard...
October 28, 2017: Nutrients
https://www.readbyqxmd.com/read/29129516/is-there-a-potential-link-between-vitamin-d-and-pulmonary-morbidities-in-preterm-infants
#2
Yang Yang, Yun Feng, Xu Chen, Xiao-Nan Mao, Jing-Han Zhang, Li Zhao, You-Yan Zhao, Rui Cheng
BACKGROUND: There hasn't been conclusive proof about the association between vitamin D and pulmonary morbidities of prematurity. METHODS: 106 preterm infants were retrospectively included into this study. Clinical data and blood samples of all the patients were collected within 24 h of admission. RESULTS: (1) Respiratory distress syndrome (RDS) patients were mainly concentrated in "≤30 weeks" stage when compared with other two gestational age groups...
November 9, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29115583/unfavorable-effect-of-calcitriol-and-its-low-calcemic-analogs-on-metastasis-of-4t1-mouse-mammary-gland-cancer
#3
Artur Anisiewicz, Agata Pawlik, Beata Filip-Psurska, Eliza Turlej, Stanisław Dzimira, Magdalena Milczarek, Katarzyna Gdesz, Diana Papiernik, Joanna Jarosz, Dagmara Kłopotowska, Andrzej Kutner, Andrzej Mazur, Joanna Wietrzyk
Low vitamin D status is considered as a risk factor for breast cancer and has prognostic significance. Furthermore, vitamin D deficiency increases after adjuvant cancer therapy, which alters bone metabolism increasing the risk of osteoporosis. It is now postulated that vitamin D supplementation in breast cancer treatment delays the recurrence of cancer thereby extending survival. We evaluated the impact of calcitriol and its low-calcemic analogs, PRI‑2191 and PRI‑2205, on the tumor growth, angiogenesis, and metastasis of 4T1 mouse mammary gland cancer...
November 2, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29113365/meta-analysis-of-the-correlation-between-vitamin-d-and-lung-cancer-risk-and-outcomes
#4
Jian Liu, Yongquan Dong, Chao Lu, Yina Wang, Ling Peng, Mengjie Jiang, Yemin Tang, Qiong Zhao
In this meta-analysis, we analyzed the association between vitamin D levels and lung carcinoma risk and outcomes. Two authors independently searched the Web of Science, Pubmed, EBSCO and Ovid MEDLINE resources with the key words "vitamin D, lung cancer, solar and latitude" and enrolled 22 studies that satisfied the inclusion criteria. The summary odds ratios (ORs) with 95% confidence intervals (CIs) were calculated using the random (or fixed)-effects model. Potential confounders were carefully adjusted. High vitamin D (or calcium) intake and serum 25(OH)D levels each correlated inversely with lung cancer risk [OR = 0...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29113037/vitamin-d-and-vdr-in-gynecological-cancers-a-systematic-review
#5
REVIEW
Eileen Deuster, Udo Jeschke, Yao Ye, Sven Mahner, Bastian Czogalla
In recent years, a vast amount of studies have centered on the role of vitamin D in the pathogenesis of certain types of cancers such as breast, colorectal and lung cancer. Increasing evidence suggests that vitamin D and its receptor play a crucial role in the development of gynecological cancers. In this review, we systematically analyzed the effect of vitamin D and the vitamin D receptor on endometrial, ovarian, cervical, vulvar and vaginal cancer. Our literature research shows that vitamin D levels and vitamin-D-related pathways affect the risk of gynecological cancers...
November 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29102624/antitumoral-effects-of-the-alkynylphosphonate-analogue-of-calcitriol-em1-on-glioblastoma-multiforme-cells
#6
María Julia Ferronato, Eliana Noelia Alonso, Débora Gisele Salomón, María Eugenia Fermento, Norberto Ariel Gandini, Mario Alfredo Quevedo, Evangelina Mascaró, Cristian Vitale, Yagamare Fall, María Marta Facchinetti, Alejandro Carlos Curino
Glioblastoma multiforme (GBM) is the worst and most common brain tumor, characterized by high proliferation and invasion rates. The current standard treatment is mainly based on chemoradiotherapy and this approach has slightly improved patient survival. Thus, novel strategies aimed at prolonging the survival and ensuring a better quality of life are necessary. In the present work, we investigated the antitumoral effect of the novel analogue of calcitriol EM1 on GBM cells employing in vitro, in silico, and in vivo assays...
November 1, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29069637/redox-active-metals-and-h2o2-mediate-the-increased-efficacy-of-pharmacological-ascorbate-in-combination-with-gemcitabine-or-radiation-in-pre-clinical-sarcoma-models
#7
Joshua D Schoenfeld, Zita A Sibenaller, Kranti A Mapuskar, Megan D Bradley, Brett A Wagner, Garry R Buettner, Varun Monga, Mohammed Milhem, Douglas R Spitz, Bryan G Allen
Soft tissue sarcomas are a histologically heterogeneous group of rare mesenchymal cancers for which treatment options leading to increased overall survival have not improved in over two decades. The current study shows that pharmacological ascorbate (systemic high dose vitamin C achieving ≥ 20mM plasma levels) is a potentially efficacious and easily integrable addition to current standard of care treatment strategies in preclinical models of fibrosarcoma and liposarcoma both in vitro and in vivo. Furthermore, enhanced ascorbate-mediated toxicity and DNA damage in these sarcoma models were found to be dependent upon H2O2 and intracellular labile iron...
September 28, 2017: Redox Biology
https://www.readbyqxmd.com/read/29064397/association-of-vitamin-d3-level-with-breast-cancer-risk-and-prognosis-in-african-american-and-hispanic-women
#8
Yanyuan Wu, Marianna Sarkissyan, Sheilah Clayton, Rowan Chlebowski, Jaydutt V Vadgama
Background: This study investigated the association of vitamin D3 levels with breast cancer risk and progression in African-Americans and Hispanics. Methods: A total of 237 African-American (Cases = 119, Control = 118) and 423 Hispanic women (Cases = 124, Control = 299) were recruited in the study. Blood samples were collected at the time of breast cancer screening and prior to cancer treatment for 4 weeks on average for the cases. The serum 25-hydroxyvitamin D (25(OH)D3) was measured at a Quest-Diagnostics facility...
October 24, 2017: Cancers
https://www.readbyqxmd.com/read/29048387/vitamin-d-as-a-novel-regulator-of-tumor-metabolism-insights-on-potential-mechanisms-and-implications-for-anti-cancer-therapy
#9
REVIEW
Mohamed A Abu El Maaty, Stefan Wölfl
1,25-dihydroxyvitamin D₃ [1,25(OH)₂D₃], the bioactive form of vitamin D, has been shown to possess significant anti-tumor potential. While most studies so far have focused on the ability of this molecule to influence the proliferation and apoptosis of cancer cells, more recent data indicate that 1,25(OH)₂D₃ also impacts energy utilization in tumor cells. In this article, we summarize and review the evidence that demonstrates the targeting of metabolic aberrations in cancers by 1,25(OH)₂D₃, and highlight potential mechanisms through which these effects may be executed...
October 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29040674/evaluation-of-apoptotic-and-autophagic-related-protein-expressions-before-and-after-ivm-of-fresh-slow-frozen-and-vitrified-pre-pubertal-mouse-testicular-tissue
#10
L Dumont, F Chalmel, A Oblette, B Berby, A Rives, V Duchesne, C Rondanino, N Rives
STUDY QUESTION: Do freezing and in vitro culture procedures enhance the expression of proteins involved in apoptotic or autophagic pathways in murine pre-pubertal testicular tissue? SUMMARY ANSWER: IVM strongly modified apoptosis- and autophagy-related relative protein levels in mice testicular tissue whereas the impact of cryopreservation procedures was minimal at the end of the culture. WHAT IS KNOWN ALREADY: In vitro spermatogenesis remains a challenging technical issue as it imposes to find a very close balance between survival and death of germ cell natural precursors (i...
November 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29032291/impact-of-an-osteoporosis-specialized-unit-on-bone-health-in-breast-cancer-survivals-treated-with-aromatase-inhibitors
#11
Purificación Martínez, Elena Galve, Virginia Arrazubi, M Ángeles Sala, Seila Fernández, Clara E Pérez, Juan F Arango, Iñaki Torre
OBJECTIVE: Considering the increased fracture risk in early breast cancer patients treated with aromatase inhibitors (AI), we assessed the impact of a preventive intervention conducted by a specialized osteoporosis unit on bone health at AI treatment start. MATERIAL AND METHODS: Retrospective cohort of postmenopausal women who started treatment with AI after breast cancer surgical/chemotherapy treatment and were referred to the osteoporosis unit for a comprehensive assessment of bone health...
October 11, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/29028924/survivor-bias-in-mendelian-randomization-analysis
#12
Stijn Vansteelandt, Oliver Dukes, Torben Martinussen
Mendelian randomization studies employ genotypes as experimental handles to infer the effect of genetically modified exposures (e.g. vitamin D exposure) on disease outcomes (e.g. mortality). The statistical analysis of these studies makes use of the standard instrumental variables framework. Many of these studies focus on elderly populations, thereby ignoring the problem of left truncation, which arises due to the selection of study participants being conditional upon surviving up to the time of study onset...
September 27, 2017: Biostatistics
https://www.readbyqxmd.com/read/29028072/vitamin-d-in-human-reproduction-the-more-the-better-an-evidence-based-critical-appraisal
#13
A S Laganà, S G Vitale, H Ban Frangež, E Vrtačnik-Bokal, R D'Anna
OBJECTIVE: Vitamin D is a fat-soluble secosteroid hormone that regulates calcium, magnesium, and phosphate homeostasis and plays a pivotal role as antiproliferative and immunomodulatory mediator. Considering the different sources of synthesis and dietary intake as well as the pleiotropic actions in extremely diverse (micro)environments of the body, the supplementation of this Vitamin should be carefully evaluated taking into account the several pathways that it regulates. In the current brief review, we aimed to summarize the available evidence about the topic, in order to suggest the best evidence-based supplementation strategy for human reproduction, avoiding the unuseful (and sometimes hazardous) empiric supplementation...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29024812/inhibition-of-pyruvate-carboxylase-by-1%C3%AE-25-dihydroxyvitamin-d-promotes-oxidative-stress-in-early-breast-cancer-progression
#14
Tomasz Wilmanski, Xuanzhu Zhou, Wei Zheng, Aparna Shinde, Shawn S Donkin, Michael Wendt, John R Burgess, Dorothy Teegarden
Maintaining reductive-oxidative (redox) balance is an essential feature in breast cancer cell survival, with cellular metabolism playing an integral role in maintaining redox balance through its supply of reduced NADPH. In the present studies, the effect of 1,25-dihydroxyvitamin D (1,25(OH)2D) on redox balance was investigated in early stages of breast cancer. Treatment with 1,25(OH)2D promoted oxidative stress in MCF10A-ras and MCF10A-ErbB2 breast epithelial cells, as measured by the decreased ratios of NADPH/NADP+ and reduced to oxidized glutathione (GSH/GSSG)...
October 9, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29024038/baseline-lab-parameters-predicting-clinical-outcome-in-melanoma-patients-treated-with-ipilimumab-a-single-center-analysis
#15
Thilo Gambichler, Victoria Brown, Ann-Kathrin Steuke, Lutz Schmitz, Eggert Stockfleth, Laura Susok
BACKGROUND: Overall response rates (ORR) for ipilimumab in advanced melanoma are only about 10%. Hence, it is important to explore biomarkers predicting ipilimumab responders. OBJECTIVE: We aimed to explore biomarkers in order to predict therapy outcome in melanoma patients who have undergone standard ipilimumab therapy in a real-world setting. METHODS: Databases of cutaneous melanoma patients (n = 52) who had received ipilimumab were reviewed and data collected on patient characteristics and diverse lab parameters...
October 10, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29022676/vitamin-d-deficiency-in-acute-coronary-syndrome-clinically-relevant-or-incidental-finding
#16
Marijana Knežević Praveček, Željka Vuković-Arar, Blaženka Miškić, Irzal Hadžibegović
OBJECTIVE: Vitamin D deficiency has been associated with cardiovascular disease. The aim of this study was to determine serum concentration of 25 hydroxyvitamin D (25(OH)D) in patients with acute coronary syndrome (ACS) and to assess the prognostic role of serum vitamin D level in ACS patients during 3-year follow up. METHODS: The study included 60 ACS patients hospitalized at cardiology department for ACS between March 2012 and October 2012, and 60 age- and sex-matched control patients without ACS...
September 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/29018141/vitamin-d-regulation-of-gdnf-ret-signaling-in-dopaminergic-neurons
#17
Renata A N Pertile, Xiaoying Cui, Luke Hammond, Darryl W Eyles
1,25(OH)2D3 (vitamin D) appears essential for the normal development of dopaminergic neurons. Vitamin D affects dopamine synthesis and metabolism as well as expression of glial cell line-derived neurotrophic factor (GDNF), which is crucial for the survival of dopaminergic neurons. We investigated the role of vitamin D on GDNF and its receptors protooncogene tyrosine-protein kinase receptor Ret (C-Ret) and GDNF family receptor alpha 1 (GFRα1) signaling. To this end, we used a developmental vitamin D-deficient rat model and SH-SY5Y cells transfected with vitamin D receptor (VDR)...
October 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29016487/ovarian-vein-thrombosis-incidence-of-recurrent-venous-thromboembolism-and-survival
#18
Charles J Lenz, Waldemar E Wysokinski, Stanislav Henkin, Kevin P Cohoon, Ana Casanegra, Benjamin S Simmons, Rayya A Saadiq, Paul R Daniels, Ewa M Wysokinska, Haraldur Bjarnason, Robert D McBane
OBJECTIVE: To identify the risk of venous thromboembolism recurrence, major bleeding, and mortality in patients with ovarian vein thrombosis so as to better define optimal treatment strategies. METHODS: Patients with ovarian vein thrombosis (1990-2015) and age- and gender-matched patients with contemporary leg deep vein thrombosis (DVT) were assessed for differences in etiology, venous thromboembolism recurrence, and survival in a case-control study. RESULTS: Over the timeframe of this study, only 219 ovarian vein thrombosis cases were identified compared with 13,417 leg DVTs...
November 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28990310/the-interaction-between-vitamin-d-receptor-polymorphisms-and-sun-exposure-around-time-of-diagnosis-influences-melanoma-survival
#19
Irene Orlow, Yang Shi, Peter A Kanetsky, Nancy E Thomas, Li Luo, Sergio Corrales-Guerrero, Anne E Cust, Lidia Sacchetto, Roberto Zanetti, Stefano Rosso, Bruce K Armstrong, Terence Dwyer, Alison Venn, Richard P Gallagher, Stephen B Gruber, Loraine D Marrett, Hoda Anton-Culver, Klaus Busam, Colin B Begg, Marianne Berwick
Evidence on the relationship between the vitamin D pathway and outcomes in melanoma is growing, although it is not always clear. We investigated the impact of measured levels of sun exposure at diagnosis on associations of vitamin D receptor gene (VDR) polymorphisms and melanoma death in 3336 incident primary melanoma cases. Interactions between six SNPs and a common 3'-end haplotype were significant (p < .05). These SNPs, and a haplotype, had a statistically significant association with survival among subjects exposed to high UVB in multivariable regression models and exerted their effect in the opposite direction among those with low UVB...
October 9, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28974267/efficacy-of-a-multi-component-exercise-programme-and-nutritional-supplementation-on-musculoskeletal-health-in-men-treated-with-androgen-deprivation-therapy-for-prostate-cancer-impact-study-protocol-of-a-randomised-controlled-trial
#20
Patrick J Owen, Robin M Daly, Patricia M Livingston, Niamh L Mundell, Jack Dalla Via, Jeremy L Millar, Steve F Fraser
BACKGROUND: Prostate cancer is the most commonly diagnosed cancer in men in developed countries. Androgen deprivation therapy (ADT) is a systemic treatment shown to increase survival in selected patients with prostate cancer. The use of ADT continues to increase for all stages and grades of prostate cancer despite known treatment-induced adverse effects. The primary aim of this study is to examine the efficacy of a targeted, multi-component resistance and impact-loading exercise programme together with a daily protein-, calcium- and vitamin D-enriched supplement on bone health in men treated with ADT for prostate cancer...
October 3, 2017: Trials
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