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https://www.readbyqxmd.com/read/29471124/methods-and-procedures-for-a-randomized-double-blind-study-investigating-dose-dependent-longitudinal-effects-of-vitamin-d-supplementation-on-bone-health
#1
Lauren A Burt, Sharon Gaudet, Michelle Kan, Marianne S Rose, Emma O Billington, Steven K Boyd, David A Hanley
The optimum dose of vitamin D and corresponding serum 25-hydroxyvitamin D (25OHD) concentration for bone health is still debated and some health practitioners are recommending doses well above the Canada/USA recommended Dietary Reference Intake (DRI). We designed a three-year randomized double-blind clinical trial investigating whether there are dose-dependent effects of vitamin D supplementation above the Dietary Reference Intake (DRI) on bone health. The primary aims of this study are to assess, whether supplementation of vitamin D3 increases 1) volumetric bone mineral density measured by high-resolution peripheral quantitative computed tomography (HR-pQCT); 2) bone strength assessed by finite element analysis, and 3) areal bone mineral density by dual X-ray absorptiometry (DXA)...
February 19, 2018: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29470777/pleiotropic-effects-of-heparins-does-anticoagulant-treatment-increase-survival-in-cancer-patients
#2
REVIEW
I García-Escobar, C Beato-Zambrano, J Muñoz Langa, E Brozos Vázquez, B Obispo Portero, D Gutiérrez-Abad, A J Muñoz Martín
The association between venous thromboembolism (VTE) and cancer has been recognized for more than 100 years. Numerous studies have been performed to investigate strategies to decrease VTE incidence and to establish whether treating VTE impacts cancer progression and overall survival. Accordingly, it is important to understand the role of the hemostatic system in tumorigenesis and progression, as there is abundant evidence associating it with cell survival and proliferation, tumor angiogenesis, invasion, and dissemination, and metastasis formation...
February 22, 2018: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29470698/permanent-hypoparathyroidism-after-total-thyroidectomy-in-children-results-from-a-national-registry
#3
Erik Nordenström, Anders Bergenfelz, Martin Almquist
INTRODUCTION: Hypoparathyroidism is the most common complication following thyroidectomy. There are few population-based reports on the rate of hypoparathyroidism in children. The incidence of medical treatment of permanent hypoparathyroidism in children is reported using a national registry. METHODS: The study population included patients below 18 years of age undergoing total thyroidectomy reported to the Scandinavian Quality Registry for Thyroid, Parathyroid and Adrenal Surgery 2004-2014...
February 22, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29470660/the-effect-of-inhalant-organic-dust-on-bone-health
#4
REVIEW
Joseph M Carrington, Jill A Poole
PURPOSE OF REVIEW: Agriculture remains a major economic sector globally, and workers experience high rates of chronic inflammatory lung and musculoskeletal diseases. Whereas obstructive pulmonary diseases are known risk factors for bone loss, the underlying relationship between lung inflammation and bone health is not well known. RECENT FINDINGS: An agriculture organic dust extract inhalation animal model has recently linked lung injury-induced inflammation to systemic bone loss...
February 22, 2018: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/29470410/the-evolving-role-of-multivitamin-multimineral-supplement-use-among-adults-in-the-age-of-personalized-nutrition
#5
REVIEW
Jeffrey B Blumberg, Regan L Bailey, Howard D Sesso, Cornelia M Ulrich
Micronutrient deficiencies occur in segments of the adult population in the United States. Multivitamin/multimineral supplements (MVMS) are widely used by this population, which reduces inadequacies in micronutrient intake, but the potential for exceeding tolerable upper intake levels in others should be considered. There are concerns associated with the excessive intake of certain nutrients, particularly folic acid, and potential untoward consequences. The advent of nutrigenomics and the enhanced ability to directly study the interactions between nutrition and genetic variants and expression will allow for the conduct of more targeted studies with specific endpoints and may ultimately lead to progress in the field of personalized nutrition...
February 22, 2018: Nutrients
https://www.readbyqxmd.com/read/29470404/oleanolic-acid-exerts-osteoprotective-effects-and-modulates-vitamin-d-metabolism
#6
Sisi Cao, Xiao-Li Dong, Ming-Xian Ho, Wen-Xuan Yu, Ka-Chun Wong, Xin-Sheng Yao, Man-Sau Wong
Oleanolic acid (OA) is a triterpenoid with reported bone anti-resorption activities. The present study aimed to characterize its bone protective effects in vivo and to study its effects on vitamin D metabolism, both in vivo and in vitro. OA significantly increased bone mineral density, improved micro-architectural properties, reduced urinary Ca excretion, increased 1,25(OH)₂D₃ and renal CYP27B1 mRNA expression in mature C57BL/6 ovariectomised (OVX) mice. OA also improved bone properties, Ca balance, and exerted modulatory effects on renal CYP27B1 and CYP24A1 expressions in aged normal female Sprague-Dawley rats...
February 22, 2018: Nutrients
https://www.readbyqxmd.com/read/29470364/resistance-training-is-associated-with-higher-bone-mineral-density-among-young-adult-male-distance-runners-independent-of-physiological-factors
#7
Anthony A Duplanty, Danielle E Levitt, David W Hill, Brian K McFarlin, Nancy M DiMarco, Jakob L Vingren
Low bone mineral density (BMD) in male distance runners is common and could be modulated by a host of biomarkers involved in the dynamic balance of bone tissue. In contrast, resistance training can increase BMD; however, the efficacy of resistance training in protecting BMD in distance runners has not been elucidated. OBJECTIVE: To investigate the relationship between resistance training, testosterone and bone metabolism biomarker concentrations, and BMD in young adult male distance runners...
February 20, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29470176/association-of-insulin-like-growth-factor-1-and-igf-binding-protein-3-with-25-hydroxy-vitamin-d-in-pre-pubertal-and-adolescent-indian-girls
#8
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
https://www.readbyqxmd.com/read/29469965/vitamin-d-receptor-expression-in-dogs
#9
J A Cartwright, A G Gow, E Milne, D Drummond, S Smith, I Handel, R J Mellanby
BACKGROUND: There is growing evidence linking low blood vitamin D concentration to numerous diseases in people and in dogs. Vitamin D influences cellular function by signaling through the vitamin D receptor (VDR). Little is known about which non-skeletal tissues express the VDR or how inflammation influences its expression in the dog. OBJECTIVES: To define which non-skeletal canine tissues express the VDR and to investigate expression in inflamed small intestine...
February 22, 2018: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29469683/positive-association-between-serum-25-hydroxy-vitamin-d-and-liver-enzymes-levels-in-healthy-individuals-a-population-based-study-from-iran
#10
Leila Nikniaz, Masood Shirmohammadi, Jafar Sadegh Tabrizi, Homayoun Sadeghi Bazargani, Mostafa Farahbakhsh
OBJECTIVE: The relationship between serum 25-hydroxy-vitamin D and within normal range liver enzymes in a population-based study in the northwest of Iran was investigated. METHOD: This cross-sectional study was comprised of 700 apparently healthy Iranian adults (287 men & 413 women) who participated in the major lifestyle promotion project (LPP) conducted in East Azarbaijan-Iran in 2015. The ultraviolet method and chemiluminescent immunoassay technology were respectively used for determination of the serum levels of liver enzymes (alanine aminotransferase (ALT) and aspartate aminotransferase (AST)) and 25-hydroxy-vitamin D...
February 22, 2018: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/29469682/vitamin-d-supplementation-in-adults-with-vitamin-d-deficiency-and-its-effect-on-metabolic-syndrome-a-randomized-controlled-study
#11
Saba Fathima Mahmood, Jyothi Idiculla, Rajnish Joshi, Shailesh Joshi, Shruthi Kulkarni
BACKGROUND: Inverse relationship between metabolic syndrome (MetS) and 25-hydroxyvitamin D (25(OH) D) levels is controversial. Hypovitaminosis-D has long been suspected as a risk factor for glucose intolerance. AIM: A randomized double blind placebo controlled study to evaluate effects of vitamin D supplementation on insulin resistance in subjects with hypovitaminosis-D and MetS. MATERIALS AND METHODS: Subjects were randomized to receive either oral 25(OH) D3 supplement (60000 (IU) per week for 8 weeks followed by 60,000 IU monthly for 4 months) or a placebo for six months...
February 22, 2018: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/29469015/do-celiac-disease-and-non-celiac-gluten-sensitivity-have-the-same-effects-on-reproductive-disorders
#12
REVIEW
Joanna Pieczyńska
OBJECTIVES: The wide spectrum of clinical symptoms of celiac disease (CD) is partly due to the malnourished state caused by the malabsorption of micro- and macronutrients. It has been suggested that fertility problems and obstetric complications may be a consequence of the endocrine disorders caused by selective nutrient deficiencies. The same selective nutrient deficiencies as in CD could be a reason for fertility problems in non-celiac gluten sensitivity (NCGS). The aim of this study was to investigate the effect of nutrient deficiencies in CD and NCGS on fertility problems...
December 8, 2017: Nutrition
https://www.readbyqxmd.com/read/29468754/prevalence-of-vitamin-b-12-deficiency-in-healthy-indian-school-going-adolescents-from-rural-and-urban-localities-and-its-relationship-with-various-anthropometric-indices-a-cross-sectional-study
#13
S Chakraborty, M Chopra, K Mani, A K Giri, P Banerjee, N S Sahni, A Siddhu, N Tandon, D Bharadwaj
BACKGROUND: Micronutrient deficiency is a global health burden, especially among developing countries. The present cross-sectional study aimed to determine the prevalence of vitamin B12 deficiency in healthy Indian school-going adolescents, based on area of residence, sex and body mass index (BMI). Furthermore, the relationship of serum B12 concentration with dietary vitamin B12 intake and anthropometric indices was assessed among adolescents from rural and urban India. METHODS: A total of 2403 school-going adolescents (11-17 years) from National Capital Region and rural areas of Haryana, India were selected...
February 22, 2018: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/29468338/vitamin-d-receptor-foki-taqi-and-apai-polymorphisms-and-susceptibility-to-systemic-lupus-erythematosus-an-updated-meta-analysis
#14
Sang-Cheol Bae, Young Ho Lee
This study aimed to explore whether vitamin D receptor (VDR) polymorphisms are associated with susceptibility to systemic lupus erythematosus (SLE). Meta-analyses were conducted to determine the associations between the VDR FokI, TaqI, and ApaI polymorphisms and SLE in all subjects and each ethnic group. A total of 12 studies were considered in the meta-analysis, which involved 1974 patients and 2506 controls. Meta-analysis of the VDR FokI polymorphism showed no association between SLE and the FokI F allele in all study subjects (OR = 1...
February 21, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29468297/aldopentoses-as-new-substrates-for-the-membrane-bound-pyrroloquinoline-quinone-dependent-glycerol-polyol-dehydrogenase-of-gluconobacter-sp
#15
Toshiharu Yakushi, Yuka Terada, Seishiro Ozaki, Naoya Kataoka, Yoshihiko Akakabe, Osao Adachi, Minenosuke Matsutani, Kazunobu Matsushita
Membrane-bound, pyrroloquinoline quinone (PQQ)-dependent glycerol dehydrogenase (GLDH, or polyol dehydrogenase) of Gluconobacter sp. oxidizes various secondary alcohols to produce the corresponding ketones, such as oxidation of D-sorbitol to L-sorbose in vitamin C production. Substrate specificity of GLDH is considered limited to secondary alcohols in the D-erythro configuration at the next to the last carbon. Here, we suggest that L-ribose, D- and L-lyxoses, and L-tagatose are also substrates of GLDH, but these sugars do not meet the substrate specificity rule of GLDH...
February 21, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29467956/vitamin-d-receptor-taq-i-polymorphism-and-the-risk-of-prostate-cancer-a-meta-analysis
#16
Shaosan Kang, Yansheng Zhao, Lei Wang, Jian Liu, Xi Chen, Xiaofeng Liu, Zhijie Shi, Weixing Gao, Fenghong Cao
Numerous previous studies reported the association of Vitamin D receptor gene Taq I polymorphism with prostate cancer risk, however these results were controversial. In order to provide a relatively comprehensive description of this relationship, we conducted this meta-analysis by searching PubMed, Embase, and China National Knowledge Infrastructure. Finally, 36 studies with 8,423 cases and 8,887 controls were included. Taq I polymorphism was found to marginally increase the prostate cancer risk in recessive genetic model (tt/Tt vs...
January 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29467625/effect-of-vitamin-d-in-hn9-10e-embryonic-hippocampal-cells-and-in-hippocampus-from-mptp-induced-parkinson-s-disease-mouse-model
#17
Samuela Cataldi, Cataldo Arcuri, Stéphane Hunot, Carmen Mecca, Michela Codini, Maria E Laurenti, Ivana Ferri, Elisabetta Loreti, Mercedes Garcia-Gil, Giovanna Traina, Carmela Conte, Francesco S Ambesi-Impiombato, Tommaso Beccari, Francesco Curcio, Elisabetta Albi
It has long been proven that neurogenesis continues in the adult brains of mammals in the dentatus gyrus of the hippocampus due to the presence of neural stem cells. Although a large number of studies have been carried out to highlight the localization of vitamin D receptor in hippocampus, the expression of vitamin D receptor in neurogenic dentatus gyrus of hippocampus in Parkinson's disease (PD) and the molecular mechanisms triggered by vitamin D underlying the production of differentiated neurons from embryonic cells remain unknown...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29467386/bmi-reduction-and-vitamin-d-insufficiency-mediated-osteoporosis-and-fragility-fractures-in-patients-at-nutritional-risk-a-cross-sectional-study
#18
Yatong Li, Min Hui, Xiao Chang, Mei Li, Yipeng Wang, Baozhong Zhang, Jianchun Yu
It seemed to be common sense that malnutrition was associated with osteoporosis, but there were few studies with detailed data proving that. Additionally, the association between BMI and osteoporosis was still under discussion. In our study of 138 patients, we first confirmed the association between nutrition and osteoporosis with propensity score matching method reducing the confounding bias, then discovered that body mass index (BMI) and 25OHD level acted as two crucial factors of nutrition risk-mediated osteoporosis...
February 21, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29467214/hepatic-transport-of-25-hydroxyvitamin-d-3-conjugates-a-mechanism-of-25-hydroxyvitamin-d-3-delivery-to-the-intestinal-tract
#19
Chunying Gao, Michael Z Liao, Lyrialle W Han, Kenneth E Thummel, Qingcheng Mao
Vitamin D3 is an important prohormone critical for maintaining calcium and phosphate homeostasis in the body and regulating drug-metabolizing enzymes and transporters. 25OHD3 , the most abundant circulating metabolite of vitamin D3 , is further transformed to the biologically active metabolite 1α,25-(OH)2 D3 by CYP27B1 in the kidney and extra-renal tissues, and to non-active metabolites by other CYP enzymes. In addition, 25OHD3 undergoes sulfonation and glucuronidation in the liver, forming two major conjugative metabolites, 25OHD3 -3- O -sulfate (25OHD3 -S) and 25OHD3 -3- O -glucuronide (25OHD3 -G), both of which were detected in human blood and bile...
February 21, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29467039/influence-of-lifestyle-characteristics-and-vdr-polymorphisms-as-risk-factors-for-intervertebral-disc-degeneration-a-case-control-study
#20
Luiz Angelo Vieira, Aline Amaro Dos Santos, Carla Peluso, Caio Parente Barbosa, Bianca Bianco, Luciano Miller Reis Rodrigues
BACKGROUND: Intervertebral disc degeneration (DD) is an important cause of low back pain and its precise aetiology is not fully understood, being attributed to cumulative environmental, biomechanical and genetic effects. The vitamin D plays a key role in regulation of calcium homeostasis and bone mineralization, exerting its biological activities by binding to a high-affinity receptor (VDR). Polymorphisms in VDR gene were previously associated with DD process, however with conflicting results...
February 21, 2018: European Journal of Medical Research
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