نتایج جستجو برای: hydroxyvitamin d

تعداد نتایج: 578040  

Journal: :Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics 2015
Li-Li Shang-Guan Ya-Ru Zhao

OBJECTIVE To examine serum 25-hydroxyvitamin D levels in children with attention deficit hyperactivity disorder (ADHD) and to explore the relationship between vitamin D level and ADHD. METHODS Ninety-seven children with ADHD who were diagnosed according to DSM-V were selected as the ADHD group, including 46 cases of ADHD-I, 10 cases of ADHD-HI, and 41 cases of ADHD-C. Ninety-seven healthy chi...

Journal: :Swiss medical weekly 2014
Vera Ramelli Gian Paolo Ramelli Sebastiano A G Lava Giordano M Siegenthaler Marco Cantù Mario G Bianchetti Alessandro Ceschi

INTRODUCTION It is recognised that vitamin D status is often inadequate (<50 nmol/l) in epileptic children, mainly because some anticonvulsant drugs induce the enzymes responsible for its metabolism. The purpose of the present study was to address vitamin D status among children and adolescents treated with anticonvulsant drugs and control subjects who reside in southern Switzerland, a high sol...

Journal: :JAMA 2012
Gregory P Levin Cassianne Robinson-Cohen Ian H de Boer Denise K Houston Kurt Lohman Yongmei Liu Stephen B Kritchevsky Jane A Cauley Toshiko Tanaka Luigi Ferrucci Stefania Bandinelli Kushang V Patel Emil Hagström Karl Michaëlsson Håkan Melhus Thomas Wang Myles Wolf Bruce M Psaty David Siscovick Bryan Kestenbaum

CONTEXT Lower serum 25-hydroxyvitamin D concentrations are associated with greater risks of many chronic diseases across large, prospective community-based studies. Substrate 25-hydroxyvitamin D must be converted to 1,25-dihydroxyvitamin D for full biological activity, and complex metabolic pathways suggest that interindividual variability in vitamin D metabolism may alter the clinical conseque...

2017
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 s...

Background Neonatal jaundice is prevalent, and the presence of hyperbilirubinemia frequently requires medical attention and hospital readmission. The aim of the present study was to determine the effect of maternal vitamin D deficiency on increased risk for hyperbilirubinemia in term newborns. Materials and Method...

Journal: :Southern medical journal 2005
Michael F Holick

Vitamin D is very important for overall health and wellbeing. A major source of vitamin D comes from exposure to sunlight. Measurement of 25-hydroxyvitamin D in the blood and not 1,25-dihydroxyvitamin D is used to determine vitamin D status. A blood level of 25-hydroxyvitamin D of at least 20 ng/mL is considered to be vitamin D sufficient. Vitamin D deficiency increases the risk of many common ...

Journal: :The American Journal of Clinical Nutrition 2011

Journal: :JAMA 2006
Kassandra L Munger Lynn I Levin Bruce W Hollis Noel S Howard Alberto Ascherio

CONTEXT Epidemiological and experimental evidence suggests that high levels of vitamin D, a potent immunomodulator, may decrease the risk of multiple sclerosis. There are no prospective studies addressing this hypothesis. OBJECTIVE To examine whether levels of 25-hydroxyvitamin D are associated with risk of multiple sclerosis. DESIGN, SETTING, AND PARTICIPANTS Prospective, nested case-contr...

Journal: :The Journal of nutrition 2005
Jennifer E Rockell Timothy J Green C Murray Skeaff Susan J Whiting Rachael W Taylor Sheila M Williams Winsome R Parnell Robert Scragg Noela Wilson David Schaaf Eljon D Fitzgerald Mark W Wohlers

New Zealand children, particularly those of Māori and Pacific ethnicity, may be at risk for low vitamin D status because of low vitamin D intakes, the country's latitude (35-46 degrees S), and skin color. The aim of this study was to determine 25-hydroxyvitamin D concentrations and their determinants in a national sample of New Zealand children aged 5-14 y. The 2002 National Children's Nutritio...

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