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Vitamin b and d deficiency

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https://www.readbyqxmd.com/read/28717807/vitamin-d-status-and-prevalent-early-age-related-macular-degeneration-in-african-americans-and-caucasians-the-atherosclerosis-risk-in-communities-aric-study
#1
A E Millen, J Nie, M W Sahli, J A Mares, K J Meyers, B E K Klein, M J LaMonte, P L Lutsey, C A Andrews, R Klein
OBJECTIVES: Vitamin D status has been hypothesized to protect against development of early age-related macular degeneration (AMD) via its anti-inflammatory properties and its possible beneficial influence on blood pressure control. We investigated the association between vitamin D status and prevalent early AMD in a community-based cohort. DESIGN: This was a cross-sectional study. SETTING: This was a secondary data analysis of already existing data from the Atherosclerosis Risk in Communities Study (ARIC) cohort collected from 1990 to 1995...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28706201/genotypic-variability-based-association-identifies-novel-non-additive-loci-dhcr7-and-irf4-in-sero-negative-rheumatoid-arthritis
#2
Wen-Hua Wei, Sebastien Viatte, Tony R Merriman, Anne Barton, Jane Worthington
Sero-negative rheumatoid arthritis (RA) is a highly heterogeneous disorder with only a few additive loci identified to date. We report a genotypic variability-based genome-wide association study (vGWAS) of six cohorts of sero-negative RA recruited in Europe and the US that were genotyped with the Immunochip. A two-stage approach was used: (1) a mixed model to partition dichotomous phenotypes into an additive component and non-additive residuals on the liability scale and (2) the Levene's test to assess equality of the residual variances across genotype groups...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28686688/therapeutic-impact-of-dietary-vitamin-d-supplementation-for-preventing-right-ventricular-remodeling-and-improving-survival-in-pulmonary-hypertension
#3
Hiroaki Tanaka, Masaharu Kataoka, Sarasa Isobe, Tsunehisa Yamamoto, Kohsuke Shirakawa, Jin Endo, Toru Satoh, Yoji Hakamata, Eiji Kobayashi, Motoaki Sano, Keiichi Fukuda
BACKGROUND: Pulmonary hypertension (PH), caused by elevated pulmonary vascular resistance, leads to right heart failure and ultimately death. Vitamin D deficiency can predispose individuals to hypertension and left ventricular dysfunction; however, it remains unknown how serum vitamin D level is related to PH and right ventricular (RV) dysfunction. METHODS: Serum 25-hydroxyvitamin D [25(OH)D] levels were assessed in PH patients for an association with disease severity...
2017: PloS One
https://www.readbyqxmd.com/read/28679140/the-effects-of-vitamin-d-supplementation-on-metabolic-status-of-patients-with-polycystic-ovary-syndrome-a-randomized-double-blind-placebo-controlled-trial
#4
Maryam Maktabi, Maryam Chamani, Zatollah Asemi
Data on the effects of vitamin D supplementation on metabolic status of patients with polycystic ovary syndrome (PCOS) are scarce. The current study was conducted to evaluate the effects of vitamin D supplementation on metabolic status of patients with PCOS. This randomized double-blind, placebo-controlled trial was performed on 70 vitamin D-deficient (serum concentrations<20 ng/ml) women with phenotype B-PCOS according to the Rotterdam criteria aged 18-40 years old. Participants were randomly allocated into 2 groups to take either 50 000 IU vitamin D (n=35) or placebo (n=35) every 2 weeks for 12 weeks...
July 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28676681/maternal-vitamin-d-dna-methylation-at-imprint-regulatory-regions-and-offspring-weight-at-birth-1-year-and-3-years
#5
S E B Neelon, A J White, A C Vidal, J M Schildkraut, A P Murtha, S K Murphy, S W Kullman, C Hoyo
BACKGROUND/OBJECTIVE: Vitamin D deficiency during pregnancy is associated with poor birth outcomes in some studies, but few have examined weight beyond birth. Additionally, little is known about how vitamin D influences DNA methylation of regulatory regions known to be involved in growth, as possible mediators to weight status in offspring. SUBJECTS/METHODS: We conducted linear regressions to assess maternal plasma 25-hydroxyvitamin D (25(OH)D) by quartile and birth weight for gestational age z-score, 1-year weight-for-length z-score, and 3-year body mass index (BMI) z-score among 476 mother/infant dyads from a prospective cohort...
July 5, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28666969/vitamin-d-regulates-osteocyte-survival-and-perilacunar-remodeling-in-human-and-murine-bone
#6
Tim Rolvien, Matthias Krause, Anke Jeschke, Timur Yorgan, Klaus Püschel, Thorsten Schinke, Björn Busse, Marie B Demay, Michael Amling
Osteocytes are the most abundant bone cells and are highly regulated by external stimuli. Vitamin D and osteocytes cooperatively regulate bone remodeling as well as phosphate and calcium homeostasis. However, it is unclear if vitamin D regulates osteocyte number, connectivity or size in the setting of altered bone formation or impaired mineralization. Sixty iliac crest biopsies of patients with varying vitamin D levels were examined to analyze osteocyte number, osteocyte connectivity and osteocyte viability using high-resolution imaging...
June 27, 2017: Bone
https://www.readbyqxmd.com/read/28657924/health-status-and-anthropometric-changes-in-resettled-refugee-children
#7
Angela M D Sandell, Robert D Baker, Jennifer Maccarone, Susan S Baker
Recently the United States has experienced an increase in refugees. Pediatric refugees are at risk for health and nutrition problems. Literature on longitudinal change in nutritional status of resettled pediatric refugees is scant. OBJECTIVE: This study reports the health and nutritional status of pediatric refugees and tracks changes in nutritional status. METHODS: Data was extracted retrospectively from the records of a community health center in Buffalo, NY. Two cohorts of refugees (0-18 years) were selected...
June 28, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28635642/lack-of-association-between-serum-vitamin-b%C3%A2-vitamin-b12-and-vitamin-d-levels-with-different-types-of-glaucoma-a-systematic-review-and-meta-analysis
#8
Shengjie Li, Danhui Li, Mingxi Shao, Wenjun Cao, Xinghuai Sun
Although vitamins play a major role in health, and their deficiency may be linked to symptoms of optic-nerve dysfunction, the association between serum vitamin levels and glaucoma in humans remains controversial. In this study, articles in the PubMed, Web of Science, and EMBASE databases were searched up to 25March 2017. Nine studies on primary open-angle glaucoma (POAG), four studies on normal tension glaucoma (NTG), and six studies on exfoliative glaucoma (EXG) were retrieved. The combined results showed no differences in the levels of serum vitamin B₆ between POAG (p = 0...
June 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28629584/association-of-vitamin-d-intake-and-serum-levels-with-fertility-results-from-the-lifestyle-and-fertility-study
#9
June L Fung, Terryl J Hartman, Rosemary L Schleicher, Marlene B Goldman
OBJECTIVE: To evaluate the role of vitamin D intake and serum levels on conception of clinical pregnancy and live birth. DESIGN: Prospective cohort study. SETTING: Academic medical centers. PATIENT(S): Healthy, nulliparous women, age 18-39 years, and their male partners. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Clinical pregnancy and live birth were compared between those who did or did not meet the vitamin D estimated average requirement (EAR) intake (10 μg/d) and with serum 25-hydroxyvitamin D (25(OH)D) considered at risk for inadequacy or deficiency (<50 nmol/L) or sufficient (≥50 nmol/L)...
June 16, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28620818/effects-of-atorvastatin-and-simvastatin-on-oxidative-stress-in-diet-induced-hyperhomocysteinemia-in-wistar-albino-rats-a-comparative-study
#10
T Nikolic, V Zivkovic, I Srejovic, I Stojic, N Jeremic, J Jeremic, K Radonjic, S Stankovic, R Obrenovic, D Djuric, V Jakovljevic
Considering the well-known antioxidant properties of statins, it seems important to assess their impact on major markers of oxidative stress (superoxide anion radical, nitric oxide, and index of lipid peroxidation) to compare the antioxidative potentials of atorvastatin and simvastatin during the different degrees of hyperhomocysteinemia (HHcy) in rats. This study was conducted on adult male Wistar albino rats (n = 90; 4 weeks old; 100 ± 15 g body mass) in which HHcy was achieved by dietary manipulation...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28620422/special-considerations-for-vitamin-d-in-the-south-asian-population-in-the-uk
#11
REVIEW
Nicola M Lowe, Issak Bhojani
The human requirement for vitamin D is achieved primarily through the synthesis of this prehormone in the skin during exposure to ultraviolet B (UVB) radiation, with only a minor contribution from the diet, year round. Achieving optimal vitamin D status is therefore largely dependent upon adequate exposure of the skin to sunlight, however, the length of exposure required varies with latitude and season, and is also dependent upon skin pigmentation, with darker skin requiring greater exposure than fair skin due to the protective effects of melanin against UVB radiation...
June 2017: Therapeutic Advances in Musculoskeletal Disease
https://www.readbyqxmd.com/read/28619953/solar-ultraviolet-b-exposure-and-global-variation-in-tuberculosis-incidence-an-ecological-analysis
#12
Tjarda M Boere, Douwe H Visser, A Marceline van Furth, Paul Lips, Frank G J Cobelens
Epidemiological evidence supports vitamin D deficiency as a risk factor for tuberculosis. Differences in solar ultraviolet B (UV-B) exposure, the major source of vitamin D, might therefore partially explain global variation in tuberculosis incidence.In a global country-based ecological study, we explored the correlation between vitamin D-proxies, such as solar UV-B exposure, and other relevant variables with tuberculosis incidence, averaged over the period 2004-2013.Across 154 countries, annual solar UV-B exposure was associated with tuberculosis incidence...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28606051/comparison-of-bone-mineral-density-in-common-variable-immunodeficiency-and-x-linked-agammaglobulinaemia-patients
#13
Ali Mohebbi, Gholamreza Azizi, Naeimeh Tavakolinia, Mehdi Karimipour, Fatemeh Kiaee, Reza Yazdani, Sareh Sadat Ebrahimi, Hosein Rafiemanesh, Vahid Ziaee, Hassan Abolhassani, Asghar Aghamohammadi, Farzaneh Abbasi, Fatemeh Sayarifard, Mehran Ebrahimi, Javad Tafaroji
BACKGROUND: Primary antibody deficiency (PAD) is the most common group of primary immunodeficiency disorders, resulting from different defects in development and function of B cell lineage. Common variable immunodeficiency (CVID) and X-linked agammaglobulinemia (XLA) are two of the major types of PADs. Optimal growth and subsequently bone health could potentially compromise due to the interference of several factors in PAD with childhood onset. In the present study, our aim was to evaluate bone mineral density (BMD) of patients with CVID and XLA...
June 11, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28592096/-survey-on-dietary-nutrients-intake-of-chinese-residents-between-2010-and-2012
#14
Q Y Guo, L Y Zhao, Y N He, Y H Fang, H Y Fang, X L Xu, F M Jia, D M Yu
Objective: To investigate the average dietary nutrients intake status among Chinese residents between 2010-2012, and to compare the difference between rural and urban areas. Methods: Data were collected from Chinese Nutrition and Health Surveillance between 2010-2012. Based on regional features and economic development levels, China's county-level divisions were classified into four types: big city, medium and small city, ordinary rural area and poor rural area. A total of 62 857 valid subjects, including 14 017, 16 539, 19 910 and 12 391 respondents in each group separately, were enrolled by Multi-stage stratified proportion to the population cluster random sampling method...
June 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28573424/vitamin-d-inhibits-the-staphylococcal-enterotoxin-b-induced-expression-of-tumor-necrosis-factor-in-microglial-cells
#15
Jinggui He, Xiyun Guo, Zhi-Qiang Liu, Ping-Chang Yang, Shaobo Yang
Microglial cells play a crucial role in inflammatory responses in neural tissue. Vitamin D (VitD3) deficiency is associated with the pathogenesis of inflammation. Staphylococcal enterotoxin B (SEB) is a superantigen and can initiate inflammation. This study tests a hypothesis that VitD3 deficiency upregulates the expression of tumor necrosis factor (TNF) in microglial cells. Microglial cells were isolated from the mouse brain. The microglial cells were cultured in the presence or absence of VitD3 or/and SEB...
June 1, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28565892/metabolic-surgery-and-nutritional-deficiencies
#16
Christine Stroh, Thomas Manger, Frank Benedix
The increasing prevalence of morbid obesity in Germany is associated with an increasing number of metabolic surgical interventions. Short-term surgical and long-term metabolic complications such as nutrient deficiencies can be considered as the main risks of metabolic surgery with its malabsorptive but also restrictive procedures. The aim of this review is to characterize the most relevant metabolic complications specific for the various bariatric procedures, which, subsequently, require a permanent surveillance and supplementation, respectively...
May 30, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28548312/vitamin-d-dependent-rickets-type-1b-25-hydroxylase-deficiency-a-rare-condition-or-a-misdiagnosed-condition
#17
Arnaud Molin, Arnaud Wiedemann, Nick Demers, Martin Kaufmann, Jérémy Do Cao, Laurent Mainard, Brigitte Dousset, Pierre Journeau, Geneviève Abeguile, Nadia Coudray, Hervé Mittre, Nicolas Richard, Georges Weryha, Arthur Sorlin, Glenville Jones, Marie-Laure Kottler, Francois Feillet
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 2 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/28542733/the-pathogenesis-of-dermatomyositis
#18
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/28523025/association-of-vitamin-d-insufficiency-deficiency-with-thyroid-artery-doppler-ultrasonography-in-patients-with-hashimoto-thyroiditis
#19
Ahmet Nalbant, Ayhan Aydin, Alper Karacan, Attila Onmez, Ali Tamer, Hakan Cinemre
BACKGROUND & OBJECTIVE: During the course of the autoimmune thyroid diseases, ultrasonography change parallel to histopathology. Vitamin D is associated with autoimmune diseases and thus can affect thyroid blood flow. Our aim was to investigate the relationship between vitamin D insufficiency/deficiency and thyroid hemodynamic indices in patients with Hashimoto thyroiditis. METHODS: A total of 93 patients who presented to Sakarya University Endocrinology outpatient clinic from April to September 2016 and diagnosed with Hashimoto thyroiditis were included in this study...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28507011/influence-of-diet-in-multiple-sclerosis-a-systematic-review
#20
REVIEW
M José Bagur, M Antonia Murcia, Antonia M Jiménez-Monreal, Josep A Tur, M Mar Bibiloni, Gonzalo L Alonso, Magdalena Martínez-Tomé
Nutrition is considered to be a possible factor in the pathogenesis of the neurological disease multiple sclerosis (MS). Nutrition intervention studies suggest that diet may be considered as a complementary treatment to control the progression of the disease; a systematic review of the literature on the influence of diet on MS was therefore conducted. The literature search was conducted by using Medlars Online International Literature (MEDLINE) via PubMed and Scopus. Forty-seven articles met the inclusion criteria...
May 2017: Advances in Nutrition
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