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Adipose tissue vitamin D

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https://www.readbyqxmd.com/read/28537652/efficacy-and-safety-of-very-low-calorie-ketogenic-diet-a-double-blind-randomized-crossover-study
#1
C Colica, G Merra, A Gasbarrini, A De Lorenzo, G Cioccoloni, P Gualtieri, M A Perrone, S Bernardini, V Bernardo, L Di Renzo, M Marchetti
OBJECTIVE: To verify safety respect to weight loss, cardiometabolic diseases of short-term Very low-calorie ketogenic diets (VLCKDs, <800 kcal day-1). PATIENTS AND METHODS: Randomized cross-over trial with placebo. The study had no. 2 dietary treatment (DT), conducted in two arms: (1) VLCKD1 in which 50% of protein intake is replaced with synthetic amino acids; (2) VLCKD2 with placebo. The VLCKDs (<800 kcal day-1) were different in term of protein content and quality each arm lasted three weeks (wks)...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28514663/fatty-acid-oxidation-in-zebrafish-adipose-tissue-is-promoted-by-1%C3%AE-25-oh-2d3
#2
Xuyan Peng, Guohui Shang, Wenqing Wang, Xiaowen Chen, Qiyong Lou, Gang Zhai, Dongliang Li, Zhenyu Du, Yali Ye, Xia Jin, Jiangyan He, Yi Zhang, Zhan Yin
1α,25(OH)2D3 (vitamin D3) is crucial for mineral homeostasis in mammals, but the precise effects of 1α,25(OH)2D3 in adipose tissue remain to be clarified in vivo. The initial 25-hydroxylation is catalyzed by liver microsomal cytochrome P450 2R1 (CYP2R1), which is conserved in vertebrates. To probe the physiological function(s) of 1α,25(OH)2D3 in teleosts, we generated two independent cyp2r1-deficient zebrafish lines. These mutants exhibit retarded growth and increased obesity, especially in the visceral adipose tissue (VAT)...
May 16, 2017: Cell Reports
https://www.readbyqxmd.com/read/28501775/vitamin-d-correlation-with-biochemical-and-body-composition-changes-in-a-southern-brazilian-population-and-induction-of-cytotoxicity-in-mesenchymal-stem-cells-derived-from-human-adipose-tissue
#3
João Renato Pesarini, Rodrigo Juliano Oliveira, Lucas Roberto Pessatto, Andréia Conceição Milan Brochado Antoniolli-Silva, Ingrid Felicidade, Nance Beyer Nardi, Melissa Camassola, Mário Sérgio Mantovani, Lúcia Regina Ribeiro
Studies have shown that metabolic disorders, serum inflammatory markers and weight gain (obesity) are correlated with vitamin D deficiency. Therefore, the present study correlated the serum calcidiol (s25(OH)D3) levels in a sample of individuals from southern Brazil with variables related to metabolic disorders, obesity and lifestyle habits and assessed the cytotoxic effect of calcitriol on adipose tissue-derived mesenchymal stem cells (ADSCs). The results showed a 79.23% prevalence of hypovitaminosis D in the study population and a correlation (p<0...
May 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28475114/melatonin-and-vitamin-d-interfere-with-the-adipogenic-fate-of-adipose-derived-stem-cells
#4
Valentina Basoli, Sara Santaniello, Sara Cruciani, Giorgio Carlo Ginesu, Maria Laura Cossu, Alessandro Palmerio Delitala, Pier Andrea Serra, Carlo Ventura, Margherita Maioli
Adipose-derived stem cells (ADSCs) represent one of the cellular populations resident in adipose tissue. They can be recruited under certain stimuli and committed to become preadipocytes, and then mature adipocytes. Controlling stem cell differentiation towards the adipogenic phenotype could have a great impact on future drug development aimed at counteracting fat depots. Stem cell commitment can be influenced by different molecules, such as melatonin, which we have previously shown to be an osteogenic inducer...
May 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28411010/effects-of-vitamin-d-and-resveratrol-on-metabolic-associated-markers-in-liver-and-adipose-tissue-from-samp8-mice
#5
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...
July 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
#6
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
#7
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 2017: EBioMedicine
https://www.readbyqxmd.com/read/28392936/25-oh-d-status-effect-of-d3-supplement
#8
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
#9
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
#10
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
#11
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...
May 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
#12
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%C3%A2-insulin-resistance-in-mice
#13
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 27, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28229265/low-vitamin-d-status-and-obesity-role-of-nutritionist
#14
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
#15
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
#16
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
#17
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
#18
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...
April 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28142252/vitamin-d-and-dysfunctional-adipose-tissue-in-obesity-authors-reply
#19
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
#20
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
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