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Vitamin D AND cholesterol

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https://www.readbyqxmd.com/read/28428001/cholesterol-and-related-sterols-autoxidation
#1
REVIEW
Chiara Zerbinati, Luigi Iuliano
Cholesterol is a unique lipid molecule providing the building block for membranes, hormone, vitamin D and bile acid synthesis. Metabolism of cholesterol involves several enzymes acting on the sterol nucleus or the iso-octyl tail. In the recent years, research interest has been focused on oxysterols, cholesterol derivatives generated by the addition of oxygen to the cholesterol backbone. Oxysterols can be produced enzymatically or by autoxidation. Autoxidation of cholesterol proceeds through type I or type II mechanisms...
April 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28421328/association-of-adiponectin-leptin-and-resistin-with-inflammatory-markers-and-obesity-in-dementia
#2
Małgorzata Bednarska-Makaruk, Ałła Graban, Anna Wiśniewska, Wanda Łojkowska, Anna Bochyńska, Magdalena Gugała-Iwaniuk, Ksenia Sławińska, Agnieszka Ługowska, Danuta Ryglewicz, Hanna Wehr
The aim of the study was to determine the role of adiponectin, leptin and resistin in various types of dementia and to investigate their association with inflammatory markers, insulin resistance and abdominal obesity. In 205 patients with dementia [89 with Alzheimer's disease (AD), 47 with vascular dementia (VaD), 69 with mixed dementia (MD)], 113 persons with mild cognitive impairment and in 107 controls serum adiponectin, leptin and resistin levels, pro-inflammatory [interleukin-6 (IL-6), C-reactive protein (hsCRP) and chitotriosidase] and anti-inflammatory (25-OH vitamin D, HDL-cholesterol and paraoxonase 1) markers, as well as glucose metabolism parameters (glucose, insulin and HOMA-IR) were determined...
April 18, 2017: Biogerontology
https://www.readbyqxmd.com/read/28407660/the-effects-of-calcium-vitamins-d-and-k-co-supplementation-on-markers-of-insulin-metabolism-and-lipid-profiles-in-vitamin-d-deficient-women-with-polycystic-ovary-syndrome
#3
Maryam Karamali, Mahnaz Ashrafi, Maryamalsadat Razavi, Mehri Jamilian, Maryam Kashanian, Maryam Akbari, Zatollah Asemi
Data on the effects of calcium, vitamins D and K co-supplementation on markers of insulin metabolism and lipid profiles among vitamin D-deficient women with polycystic ovary syndrome (PCOS) are scarce. This study was done to determine the effects of calcium, vitamins D and K co-supplementation on markers of insulin metabolism and lipid profiles in vitamin D-deficient women with PCOS. This randomized double-blind, placebo-controlled trial was conducted among 55 vitamin D-deficient women diagnosed with PCOS aged 18-40 years old...
April 13, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28403948/association-between-early-pregnancy-vitamin-d-status-and-changes-in-serum-lipid-profiles-throughout-pregnancy
#4
Jaqueline Lepsch, Ilana Eshriqui, Dayana Rodrigues Farias, Juliana S Vaz, Amanda C Cunha Figueiredo, Amanda Rodrigues Amorim Adegboye, Alex Brito, Rana Mokhtar, Lindsay H Allen, Michael F Holick, Gilberto Kac
OBJECTIVE: To evaluate the associations between first trimester 25-hydroxyvitamin D [25(OH)D] status and changes in high-density lipoprotein cholesterol (HDL-c), low-density lipoprotein cholesterol (LDL-c), total cholesterol (TC), triglyceride (TG) concentrations, TG/HDL-c, and TC/HDL-c ratios throughout pregnancy. We hypothesized that first trimester 25(OH)D inadequacy is associated with lower concentrations of HDL-c and higher LDL-c, TC, TG, TG/HDL-c, and TC/HDL-c ratios throughout pregnancy...
May 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28401679/the-role-of-cholesterol-metabolism-and-various-steroid-abnormalities-in-autism-spectrum-disorders-a-hypothesis-paper
#5
REVIEW
Christopher Gillberg, Elisabeth Fernell, Eva Kočovská, Helen Minnis, Thomas Bourgeron, Lucy Thompson, Clare S Allely
Based on evidence from the relevant research literature, we present a hypothesis that there may be a link between cholesterol, vitamin D, and steroid hormones which subsequently impacts on the development of at least some of the "autisms" [Coleman & Gillberg]. Our hypothesis, driven by the peer reviewed literature, posits that there may be links between cholesterol metabolism, which we will refer to as "steroid metabolism" and findings of steroid abnormalities of various kinds (cortisol, testosterone, estrogens, progesterone, vitamin D) in autism spectrum disorder (ASD)...
April 12, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28400827/effects-of-vitamin-d-deficiency-treatment-on-metabolic-markers-in-hashimoto-thyroiditis-patients
#6
Parichehr Vahabi Anaraki, Ashraf Aminorroaya, Massoud Amini, Awat Feizi, Bijan Iraj, Azamosadat Tabatabaei
BACKGROUND: The aim of the current trial was to investigate the effect of Vitamin D treatment on metabolic markers in people with Vitamin D deficiency and thyroid autoimmunity. MATERIALS AND METHODS: In this double-blind, randomized, placebo-controlled clinical trial, 65 Vitamin D deficient euthyroid or hypothyroid patients with positive TPO-Ab were enrolled. They randomly allocated into two groups to receive oral Vitamin D3 (50000 IU weekly) and placebo for 12 weeks...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28399838/association-of-nutrition-club-membership-with-markers-of-health-a-cross-sectional-study
#7
Sai Krupa Das, Taylor A Vail, Namibia Lebrón-Torres, Kara A Livingston, Susan B Roberts, Gail T Rogers, Cheryl H Gilhooly, Lorien E Urban, Edward Saltzman, Nicola M McKeown, Sara C Folta
BACKGROUND: Nutrition clubs (NC) operate in community settings and provide members with nutrition education and meal replacements for weight management. NC are owned and operated by distributors of Herbalife products. There are over 6200 NC in the US, but there has been no independent assessment of the association of these NC with biomarkers of health. METHODS: We conducted a cross-sectional pilot study to compare the health status of 100 NC members to 100 community-matched controls (CC) in the greater Boston area...
April 11, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28397539/vitamin-d-status-and-cardiometabolic-risk-factors-across-latitudinal-gradient-in-iranian-adults
#8
Bahareh Nikooyeh, Zahra Abdollahi, Majid Hajifaraji, Hamid Alavi-Majd, Forouzan Salehi, Amir Hossein Yarparvar, Tirang R Neyestani
BACKGROUND: This study aimed to evaluate the vitamin D status in an adult population across latitudinal gradient and to investigate its possible associations with certain cardiometabolic risk factors. METHODS: A total of 1406 healthy subjects aged 19-60 years were randomly selected from six regions of Iran across latitudinal gradient from 29° N to 37.5° N. Anthropometric and biochemical assessments were performed. The combination of high body mass index (>25 kg/m(2)), low high-density lipoprotein cholesterol (< 40 mg/dl in males and < 50 mg/dl in females) and high triglycerides (> 150 mg/dl) was defined as cardiometabolic risk factors...
January 1, 2017: Nutrition and Health
https://www.readbyqxmd.com/read/28396407/life-skills-wealth-health-and-wellbeing-in-later-life
#9
Andrew Steptoe, Jane Wardle
Life skills play a key role in promoting educational and occupational success in early life, but their relevance at older ages is uncertain. Here we measured five life skills-conscientiousness, emotional stability, determination, control, and optimism-in 8,119 men and women aged 52 and older (mean 66.7 y). We show that the number of skills is associated with wealth, income, subjective wellbeing, less depression, low social isolation and loneliness, more close relationships, better self-rated health, fewer chronic diseases and impaired activities of daily living, faster walking speed, and favorable objective biomarkers (concentration of high-density lipoprotein cholesterol, vitamin D and C-reactive protein, and less central obesity)...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28392355/association-of-vitamin-d-receptor-gene-polymorphisms-with-metabolic-syndrome-and-its-components-among-adult-arabs-from-the-united-arab-emirates
#10
Hayder A Hasan, Ra'ed O AbuOdeh, Wan Abdul Manan Bin Wan Muda, Hamid Jan Bin Jan Mohamed, Ab Rani Samsudin
AIMS: The aim was to investigate relationships of Vitamin D receptor gene (VDR) polymorphisms to the components of MetS among Arabs adult residing in the United Arab Emirates. METHODS: A cross-sectional study of 198 Arabs adult (50 males and 148 females). Serum levels of glucose, vitamin D, HDL-C, and TG, and blood pressure were measured. FokI, BsmI & TaqI genotyping of VDR were investigated using PCR-RFLP technique. RESULTS: Age of the participants was 21(9) years with a BMI of 26...
April 2, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28391585/influence-of-vitamin-d-levels-on-the-cardiovascular-profile-of-hypogonadal-men
#11
G Tirabassi, M Cutini, G Salvio, G Cerqueni, A Lenzi, G Balercia
PURPOSE: A large body of evidence suggests a role for vitamin D in conditioning cardiovascular risk. Therefore, it can be hypothesized that vitamin D might also play a role in influencing the metabolic profile of hypogonadal men. In this work, we aimed at evaluating if any relationship exists between vitamin D levels and cardiovascular parameters in male hypogonadism. METHODS: Hypogonadal patients attending our andrology unit were retrospectively reviewed. Clinical and biochemical parameters were evaluated...
April 8, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28361748/erythrocyte-concentrations-of-b1-b2-b6-but-not-plasma-c-and-e-are-reliable-indicators-of-nutrition-status-in-the-presence-of-systemic-inflammation
#12
Rawia A Ghashut, Donald C McMillan, John Kinsella, Dinesh Talwar
BACKGROUND & AIM: There is increasing evidence that the plasma concentration of vitamin D, carotenoids, zinc and selenium are associated with the magnitude of the systemic inflammatory response. In order to examine whether other vitamins may be affected and whether red cell concentrations are less affected by systemic inflammation the aim of the present study was to examine the effect of the systemic inflammatory response on red cell measurements of vitamins B1, B2 and B6, and plasma concentration of vitamin C and E in a large cohort of patients referred for a nutritional screen...
February 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28353575/association-between-serum-25-hydroxyvitamin-d-and-carotid-atherosclerotic-plaque-in-chinese-type-2-diabetic-patients
#13
Ya-Hui Ding, Tie-Ming Wei, Lin-Yan Qian, Yuan Ma, Di-Bo Lao, Bin Yao, Jie Pang
In this study, we investigated the distribution of vitamin D and its association with carotid atherosclerotic plaque (CP) in Chinese type 2 diabetic (T2D) patients. We performed a cross-sectional study in 210 T2D and 94 age- and gender-matched nondiabetic patients during winter months, by determining serum 25-hydroxyvitamin D (25(OH)D) levels in both diabetic and nondiabetic controls. We carried out measurements of B-mode ultrasonography of carotid arteries in each T2D patient. The 25(OH)D concentration was 26...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28346853/high-prevalence-of-vitamin-d-deficiency-and-correlation-of-serum-vitamin-d-with-cardiovascular-risk-in-patients-with-metabolic-syndrome
#14
Mohammad J Alkhatatbeh, Khalid K Abdul-Razzak, Lubna Q Khasawneh, Nesreen A Saadeh
BACKGROUND: Metabolic syndrome (MetS) identifies subjects with increased risk of cardiovascular disease when they have a combination of insulin resistance, obesity, hypertension, hyperglycemia, low high-density lipoprotein cholesterol (HDL-C), and elevated triglycerides (TGs). Increasing evidence suggests that vitamin D deficiency could be associated with diabetes and MetS. The aim is to assess if 25-hydroxyvitamin D (25-OHD) is correlated with cardiovascular risk components of MetS. METHODS: A cross-sectional study involved 124 diabetic patients with MetS according to International Diabetes Federation definition...
March 27, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28326301/association-of-serum-25-hydroxy-vitamin-d-concentration-and-arterial-stiffness-among-korean-adults-in-single-center
#15
Jung Hae Lee, Heuy Sun Suh
BACKGROUND: There are growing concerns about the role of vitamin D deficiency in cardiovascular diseases. Therefore, we investigated the correlation between serum 25-hydroxy-vitamin D (25[OH]D) and arterial stiffness among Korean adults. METHODS: We retrospectively reviewed the medical charts of 302 people (115 women and 187 men) who visited a tertiary hospital from January 2015 to December 2016. Serum 25(OH)D was measured using the radioimmunoassay technique, and brachial-ankle pulse wave velocity (baPWV) was measured using an automatic wave analyzer...
February 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28323045/vitamin-d-receptor-gene-polymorphisms-among-emirati-patients-with-type-2-diabetes-mellitus
#16
Habiba Al Safar, Sarah El Hajj Chehadeh, Laila Abdel-Wareth, Afrozul Haq, Herbert F Jelinek, Gehad ElGhazali, Fatme Al Anouti
At a prevalence rate close to 19.5%, the UAE has one of the highest rates of Type 2 Diabetes Mellitus (T2DM) in the world. Genome wide association studies (GWAS) have led to the identification of several genetic variants that are associated with T2DM. Recently, genes involved in vitamin D metabolism have gained interest because of the association between vitamin D deficiency (VDD) and increased risk for T2DM. Among these, the Vitamin D receptor (VDR) gene is a good candidate for T2DM susceptibility. The aim of this study was to investigate the association between VDR polymorphisms and T2DM among a representative sample of the Emirati population...
March 16, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28318178/vitamin-d-deficiency-and-insulin-resistance-as-risk-factors-for-dyslipidemia-in-obese-children
#17
Meltem Erol, Özlem Bostan Gayret, Şahin Hamilçıkan, Emrah Can, Özgu L Yiğit
INTRODUCTION: Dyslipidemia is one of the major complications of obesity; vitamin D deficiency and insulin resistance are attending metabolic complications in dyslipidemic obese children. Objective. To determine if vitamin D deficiency and insulin resistance are risk factors for dyslipidemia in obese children. MATERIALS AND METHODS: This study was conducted in the Department of Pediatrics at Bagcilar Training and Research Hospital in Istanbul, Turkey between 2014 and 2015...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28286758/role-of-vitamin-d-in-uremic-vascular-calcification
#18
REVIEW
Yi-Chou Hou, Wen-Chih Liu, Cai-Mei Zheng, Jing-Quan Zheng, Tzung-Hai Yen, Kuo-Cheng Lu
The risk of cardiovascular death is 10 times higher in patients with CKD (chronic kidney disease) than in those without CKD. Vascular calcification, common in patients with CKD, is a predictor of cardiovascular mortality. Vitamin D deficiency, another complication of CKD, is associated with vascular calcification in patients with CKD. GFR decline, proteinuria, tubulointerstitial injury, and the therapeutic dose of active form vitamin D aggravate vitamin D deficiency and reduce its pleiotropic effect on the cardiovascular system...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28281321/basis-of-bone-metabolism-around-dental-implants-during-osseointegration-and-peri-implant-bone-loss
#19
REVIEW
Angel Insua, Alberto Monje, Hom-Lay Wang, Richard J Miron
Despite the growing number of publications in the field of implant dentistry, there are limited studies to date investigating the biology and metabolism of bone healing around dental implants and their implications in peri-implant marginal bone loss. The aim of this review article is to provide a thorough understanding of the biological events taking place during osseointegration and the subsequent early and late phases of bone remodeling around dental implants. An update on the coupling mechanism occurring during bone resorption-bone remodeling is provided, focused on the relevance of the osteocytes, bone lining cells and immune cells during bone maintenance...
March 9, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28273804/domain-4-d4-of-perfringolysin-o-to-visualize-cholesterol-in-cellular-membranes-the-update
#20
REVIEW
Masashi Maekawa
The cellular membrane of eukaryotes consists of phospholipids, sphingolipids, cholesterol and membrane proteins. Among them, cholesterol is crucial for various cellular events (e.g., signaling, viral/bacterial infection, and membrane trafficking) in addition to its essential role as an ingredient of steroid hormones, vitamin D, and bile acids. From a micro-perspective, at the plasma membrane, recent emerging evidence strongly suggests the existence of lipid nanodomains formed with cholesterol and phospholipids (e...
March 3, 2017: Sensors
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