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Adipose tissue vitamin D

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https://www.readbyqxmd.com/read/28411010/effects-of-vitamin-d-and-resveratrol-on-metabolic-associated-markers-in-liver-and-adipose-tissue-from-samp8-mice
#1
Yehua Rui, Jinbo Cheng, Liqiang Qin, Cheng Shan, Jie Chang, Guiping Wang, Zhongxiao Wan
SAMP8 mice exhibit multiple metabolic characteristics associated with age, and it is a suitable candidate for researching aging associated metabolic dysfunction. OBJECTIVES: We aimed to 1) explore how key metabolic markers will be altered in both liver and adipose tissue with aging in SAMP8 mice; and 2) how the combination of vitamin D (VD) with resveratrol (RSV) will affect aging associated metabolic impairment in liver and adipose tissue from SAMP8 mice. METHODS: SAMP8 mice and their control SAMR1 mice were divided into 5 groups, i...
April 11, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28409320/vitamin-d-sub-inflammation-and-insulin-resistance-a-window-on-a-potential-role-for-the-interaction-between-bone-and-glucose-metabolism
#2
REVIEW
Stefania Giuliana Garbossa, Franco Folli
Vitamin D is a key hormone involved in the regulation of calcium/phosphorous balance and recently it has been implicated in the pathogenesis of sub-inflammation, insulin resistance and obesity. The two main forms of vitamin D are cholecalciferol (Vitamin D3) and ergocalciferol (Vitamin D2): the active form (1,25-dihydroxyvitamin D) is the result of two hydroxylations that take place in liver, kidney, pancreas and immune cells. Vitamin D increases the production of some anti-inflammatory cytokines and reduces the release of some pro-inflammatory cytokines...
April 13, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28408241/maternal-retinoids-increase-pdgfr%C3%AE-progenitor-population-and-beige-adipogenesis-in-progeny-by-stimulating-vascular-development
#3
Bo Wang, Xing Fu, Xingwei Liang, Zhixiu Wang, Qiyuan Yang, Tiande Zou, Wei Nie, Junxing Zhao, Pengfei Gao, Mei-Jun Zhu, Jeanene M de Avila, Joseph Maricelli, Buel D Rodgers, Min Du
Maternal vitamin A intake varies but its impact on offspring metabolic health is unknown. Here we found that maternal vitamin A or retinoic acid (RA) administration expanded PDGFRα(+) adipose progenitor population in progeny, accompanied by increased blood vessel density and enhanced brown-like (beige) phenotype in adipose tissue, protecting offspring from obesity. Blockage of retinoic acid signaling by either BMS493 or negative RA receptor (RARαDN) over-expression abolished the increase in blood vessel density, adipose progenitor population, and beige adipogenesis stimulated by RA...
April 4, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28392936/25-oh-d-status-effect-of-d3-supplement
#4
J M Lukaszuk, P E Luebbers
BACKGROUND: Excess adipose tissue may lead to sequestrating of vitamin D, making it less available for use in the body. OBJECTIVE: This study determined if overweight or obese individuals (BMI > 25 kg m(-2)) had insufficient (<30 ng mL(-1)) levels of 25-hydroxyvitamin D [25(OH)D] and, if so, would serum levels respond to exogenous supplementation. METHODS: Sixty-three women who were overweight/obese (BMI = 31.07 ± 5...
March 2017: Obesity Science & Practice
https://www.readbyqxmd.com/read/28353634/vitamin-d-insufficiency-exacerbates-adipose-tissue-macrophage-infiltration-and-decreases-ampk-sirt1-activity-in-obese-rats
#5
Eugene Chang, Yangha Kim
Obesity is recognized as a state of chronic low-grade systemic inflammation due to adipose tissue macrophage infiltration and production of proinflammatory adipokines. Decreased vitamin D status is associated with obesity. The specific aim of the present study is to investigate the effects of vitamin D on obesity-induced adipose tissue inflammation. Male Sprague-Dawley rats were randomized and fed a normal diet (NOR, 1000 IU vitamin D/kg diet), a 45% high-fat diet (HF, 1000 IU vitamin D/kg diet), or a 45% high-fat diet containing 25 IU vitamin D/kg diet (HF+LVD) for 12 weeks...
March 29, 2017: Nutrients
https://www.readbyqxmd.com/read/28302355/effects-of-short-term-calcium-supplementation-in-children-and-adolescents-with-phenylketonuria
#6
Nancy Y Y Tanaka, Marlene F Turcato, Carolina F Nicoletti, Carla B Nonino, Luciana D Martins, Odilon Iannetta, Carlos Tostes Guerreiro, Gisele G Santos, Júlio S Marchini
Reduction of bone mineral density and the risk of osteopenia have been reported to occur in phenylketonuria (PKU) patients. This study aimed to evaluate the short-term effects of calcium supplementation in phenylketonuric children and adolescents. The study included 18 patients with PKU aged 5-18 yr (61% male) under clinical and nutritional treatment. Evaluation of food intake, anthropometry, and biochemical and phalangeal quantitative ultrasound were performed before (phase 1) and after (phase 2) calcium supplementation (1000 mg/d) for 34 d...
March 13, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28298391/vitamin-a-supplementation-redirects-the-flow-of-retinyl-esters-from-peripheral-to-central-organs-of-neonatal-rats-raised-under-vitamin-a-marginal-conditions
#7
Joanna K Hodges, Libo Tan, Michael H Green, A Catharine Ross
Background: Vitamin A (VA; retinol) supplementation is used to reduce child mortality in countries with high rates of malnutrition. Existing research suggests that neonates (<1 mo old) may have a limited capacity to store VA in organs other than the liver; however, knowledge about VA distribution and kinetics in individual, nonhepatic organs is limited.Objective: We examined retinol uptake and turnover in nonhepatic organs, including skin, brain, and adipose tissue, in neonatal rats without and after VA supplementation...
March 15, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28262768/chronic-alcohol-consumption-decreases-brown-adipose-tissue-mass-and-disrupts-thermoregulation-a-possible-role-for-altered-retinoid-signaling
#8
William S Blaner, Madeleine A Gao, Hongfeng Jiang, Timothy R A Dalmer, Xueyuan J Hu, Henry N Ginsberg, Robin D Clugston
Retinoic acid, an active metabolite of dietary vitamin A, acts as a ligand for nuclear receptor transcription factors with more than 500 known target genes. It is becoming increasingly clear that alcohol has a significant impact on cellular retinoic acid metabolism, with resultant effects on its function. Here, we test the hypothesis that chronic alcohol consumption impairs retinoic acid signaling in brown adipose tissue (BAT), leading to impaired BAT function and thermoregulation. All studies were conducted in age-matched, male mice consuming alcohol-containing liquid diets...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28246016/gut-specific-delivery-of-t-helper-17-cells-reduces-obesity-and-insulin-resistance-in-mice
#9
Chun-Pyo Hong, Areum Park, Bo-Gie Yang, Chang Ho Yun, Min-Jung Kwak, Gil-Woo Lee, Jung-Hwan Kim, Min Seong Jang, Eun-Jung Lee, Eun-Ji Jeun, Gihoon You, Kwang Soon Kim, Youngwoo Choi, Ji-Hwan Park, Daehee Hwang, Sin-Hyeog Im, Jihyun F Kim, Yoon-Keun Kim, Ju-Young Seoh, Charles D Surh, You-Me Kim, Myoung Ho Jang
BACKGROUND & AIMS: Obesity and metabolic syndrome have been associated with alterations to the intestinal microbiota. However, few studies examined the effects of obesity on the intestinal immune system. We investigated changes in subsets of intestinal CD4+ T-helper (Th) cells with obesity and the effects of gut-tropic Th17 cells in mice on a high-fat diet (HFD). METHODS: We isolated immune cells from small intestine and adipose tissue of C57BL/6 mice fed a normal chow diet or a HFD for 10 weeks and analyzed the cells by flow cytometry...
February 25, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28229265/low-vitamin-d-status-and-obesity-role-of-nutritionist
#10
REVIEW
Silvia Savastano, Luigi Barrea, Maria Cristina Savanelli, Francesca Nappi, Carolina Di Somma, Francesco Orio, Annamaria Colao
Low vitamin D status and obesity have concomitantly reached epidemic levels worldwide. Up to now the direction of the association between low vitamin D status and obesity, the exact mechanisms responsible for this association and the clinical usefulness to increase vitamin D status for reducing adiposity still warrant further evaluation. The aim of the present review was to examine the current evidence linking low vitamin D status and obesity in relation to the role of the nutritionist. On the one side, considering obesity as a causal factor, low sun exposure in obese individuals due to their sedentary lifestyle and less outdoor activity, vitamin D sequestration in adipose tissue, and volumetric dilution of ingested or cutaneously synthesized vitamin D3 in the large fat mass of obese patients, might represent some of the factors playing a major role in the pathogenesis of the low vitamin D status...
February 23, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28212289/the-effects-of-myo-inositol-and-b-and-d-vitamin-supplementation-in-the-db-mouse-model-of-gestational-diabetes-mellitus
#11
Jasmine F Plows, Florence Budin, Rebecka A M Andersson, Valerie J Mills, Katherine Mace, Sandra T Davidge, Mark H Vickers, Philip N Baker, Irma Silva-Zolezzi, Joanna L Stanley
Gestational diabetes mellitus (GDM) is a growing concern, affecting an increasing number of pregnant women worldwide. By predisposing both the affected mothers and children to future disease, GDM contributes to an intergenerational cycle of obesity and diabetes. In order to stop this cycle, safe and effective treatments for GDM are required. This study sought to determine the treatment effects of dietary supplementation with myo-inositol (MI) and vitamins B2, B6, B12, and D in a mouse model of GDM (pregnant db/+ dams)...
February 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28199350/25-hydroxyvitamin-d3-and-1-25-dihydroxyvitamin-d3-exert-distinct-effects-on-human-skeletal-muscle-function-and-gene-expression
#12
Zaki K Hassan-Smith, Carl Jenkinson, David J Smith, Ivan Hernandez, Stuart A Morgan, Nicola J Crabtree, Neil J Gittoes, Brian G Keevil, Paul M Stewart, Martin Hewison
Age-associated decline in muscle function represents a significant public health burden. Vitamin D-deficiency is also prevalent in aging subjects, and has been linked to loss of muscle mass and strength (sarcopenia), but the precise role of specific vitamin D metabolites in determining muscle phenotype and function is still unclear. To address this we quantified serum concentrations of multiple vitamin D metabolites, and assessed the impact of these metabolites on body composition/muscle function parameters, and muscle biopsy gene expression in a retrospective study of a cohort of healthy volunteers...
2017: PloS One
https://www.readbyqxmd.com/read/28187222/impaired-release-of-vitamin-d-in-dysfunctional-adipose-tissue-new-cues-on-vitamin-d-supplementation-in-obesity
#13
Andrea Di Nisio, Luca De Toni, Iva Sabovic, Maria Santa Rocca, Vincenzo De Filippis, Giuseppe Opocher, Bruno Azzena, Roberto Vettor, Mario Plebani, Carlo Foresta
No abstract text is available yet for this article.
February 10, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28161177/influence-of-conjugated-linoleic-acid-and-vitamin-e-on-performance-energy-metabolism-and-change-of-fat-depot-mass-in-transitional-dairy-cows
#14
S Schäfers, D von Soosten, U Meyer, C Drong, J Frahm, J Kluess, C Raschka, J Rehage, A Tröscher, W Pelletier, S Dänicke
The objective of this experiment was to determine the effects of conjugated linoleic acid (CLA) and vitamin E as well as their interaction on performance variables and lipomobilization during late pregnancy and early lactation (wk 6 antepartum until wk 10 postpartum). For this purpose, 59 pluriparous German Holstein cows were assigned to 4 dietary groups in a 2 × 2 design with the factors CLA and vitamin E at 2 levels. For this trial, we selected cows with a high body condition score because they are more likely to mobilize fat and consequently are at a higher risk of developing ketosis...
February 1, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28142252/vitamin-d-and-dysfunctional-adipose-tissue-in-obesity-authors-reply
#15
Edita Stokic, Aleksandar Kupusinac, Dragana Tomic-Naglic, Dragana Smiljenic, Branka Kovacev-Zavisic, Biljana Srdic-Galic, Sanja Soskic, Esma R Isenovic
No abstract text is available yet for this article.
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28139795/sunlight-exposure-is-just-one-of-the-factors-which-influence-vitamin-d-status
#16
M Abboud, M S Rybchyn, R Rizk, D R Fraser, R S Mason
Studies on the determinants of vitamin D status have tended to concentrate on input - exposure to ultraviolet B radiation and the limited sources in food. Yet, vitamin D status, determined by circulating concentrations of 25-hydroxyvitamin D (25(OH)D), can vary quite markedly in groups of people with apparently similar inputs of vitamin D. There are small effects of polymorphisms in the genes for key proteins involved in vitamin D production and metabolism, including 7-dehydrocholesterol reductase, which converts 7-dehydrocholesterol, the precursor of vitamin D, to cholesterol, CYP2R1, the main 25-hydroxylase of vitamin D, GC, coding for the vitamin D binding protein which transports 25(OH)D and other metabolites in blood and CYP24A1, which 24-hydroxylates both 25(OH)D and the hormone, 1,25-dihydroxyvitamin D...
March 16, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28100914/tet-mediated-hydroxymethylcytosine-at-the-ppar%C3%AE-locus-is-required-for-initiation-of-adipogenic-differentiation
#17
Y Yoo, J H Park, C Weigel, D B Liesenfeld, D Weichenhan, C Plass, D-G Seo, A M Lindroth, Y J Park
BACKGROUND/OBJECTIVES: Adipose tissue is one of the main organs regulating energy homeostasis via energy storage as well as endocrine function. The adipocyte cell number is largely determined by adipogenesis. While the molecular mechanism of adipogenesis has been extensively studied, its role in dynamic DNA methylation plasticity remains unclear. Recently, it has been shown that Tet methylcytosine dioxygenase (TET) is catalytically capable of oxidizing DNA 5-methylcytosine (5-mC) to 5-hydroxymethylcytosine (5-hmC) toward a complete removal of the methylated cytosine...
April 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28087005/and-the-fat-lady-sings-about-phosphate-and-calcium
#18
Carsten A Wagner, Pedro H Imenez Silva, Isabel Rubio-Aliaga
Adipose tissue has been long recognized as secreting various endocrine factors. Emerging evidence demonstrates that adipokines play a role in modulating systemic mineral homeostasis through endocrine loops involving interleukin-6, leptin, and now also adiponectin, which all interact with FGF23 and vitamin D and thereby change the renal control of calcium and phosphate metabolism. Understanding these regulatory loops may shed light on a complex interorgan crosstalk controlling mineral homeostasis and its dysregulation in diseases associated with obesity...
February 2017: Kidney International
https://www.readbyqxmd.com/read/28063949/vitamin-d-supplementation-inhibits-oxidative-stress-and-upregulate-sirt1-ampk-glut4-cascade-in-high-glucose-treated-3t3l1-adipocytes-and-in-adipose-tissue-of-high-fat-diet-fed-diabetic-mice
#19
Prasenjit Manna, Arunkumar E Achari, Sushil K Jain
This study examined the hypothesis that vitamin-D prevents oxidative stress and upregulates glucose metabolism via activating insulin-independent signaling molecules in 3T3-L1 adipocytes and in high fat diet (HFD)-fed mice. To investigate the mechanism 3T3L1 adipocytes were treated with high glucose (HG, 25 mM) and 1,25(OH)2D3 (1,25-dihydroxyvitamin D3) (0-50 nM). Results showed that 1,25(OH)2D3 supplementation decreased NOX4 expression, ROS production, NF-κB phosphorylation, and increased the expression of Nrf2 and Trx in HG-treated cells...
February 1, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28055298/vitamin-d-limits-inflammation-linked-microrna-expression-in-adipocytes-in-vitro-and-in-vivo-a-new-mechanism-for-the-regulation-of-inflammation-by-vitamin-d
#20
Esma Karkeni, Lauriane Bonnet, Julie Marcotorchino, Franck Tourniaire, Julien Astier, Jianping Ye, Jean-François Landrier
Inflammation of adipose tissue is believed to be a contributing factor to many chronic diseases associated with obesity. Vitamin D (VD) is now known to limit this metabolic inflammation by decreasing inflammatory marker expression and leukocyte infiltration in adipose tissue. In this study, we investigated the impact of VD on microRNA (miR) expression in inflammatory conditions in human and mouse adipocytes, using high-throughput methodology (miRNA PCR arrays). Firstly, we identified three miRs (miR-146a, miR-150, and miR-155) positively regulated by TNFα in human adipocytes...
January 5, 2017: Epigenetics: Official Journal of the DNA Methylation Society
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