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Adipokines vitamin D

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
Meilin Zhang, Yuxia Gao, Liqiang Tian, Li Zheng, Xuan Wang, Weiqiao Liu, Yuwen Zhang, Guowei Huang
BACKGROUND: The association of vitamin D status and inflammation prediabetes mellitus (PreDM) individuals has not been investigated. We investigated the association of serum 25-hydroxyvitamin D3 (25(OH) D3) with adipokines and inflammatory markers in persons with PreDM. METHODS: In this cross-sectional study, we stratified 418 nondiabetic subjects as having PreDM or normal fasting glucose (NFG), and divided PreDM or NFG subjects into vitamin D sufficient, vitamin D insufficient and vitamin D deficient subgroups...
March 1, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
Maria Fernanda G Biagioni, Adriana L Mendes, Célia Regina Nogueira, Celso V Leite, Loraine Gollino, Gláucia Mfs Mazeto
PURPOSE: Bariatric surgery has been associated with bone remodeling changes. The action of adipokines on the expression of receptor activator of nuclear factor kappa β ligand (RANKL) and osteoprotegerin (OPG) and on an increase in sclerostin could be related to these changes. MATERIALS AND METHODS: This study aimed to assess the repercussions of weight loss, fat mass (FM), and fat-free mass (FFM) loss and biochemical and hormonal changes on bone remodeling markers after Roux-en-Y gastric bypass (RYGB)...
January 13, 2017: Obesity Surgery
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
Christine Rambhojan, Laurent Larifla, Josiane Clepier, Elodie Bouaziz-Amar, Fritz-Line Velayoudom-Cephise, Anne Blanchet-Deverly, Christophe Armand, Jean Plumasseau, Jean-Marc Lacorte, Lydia Foucan
AIM: We aimed to study the relationships between circulating 25-hydroxyvitamin D [25(OH)D], insulin resistance and leptin-to-adiponectin (L/A) ratio in Guadeloupean children and adolescents and to analyse the changes in 25(OH)D levels after a 1-year lifestyle intervention program. METHODS: 25(OH)D concentrations were measured via a chemiluminescence assay. Cardiometabolic risk factors, homoeostasis model assessment of insulin resistance (HOMA-IR), and adipokines were measured...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
Xue Yang, Xiang-Yu Dong
Vitamin D is an important steroid hormone, which has a wide biological effect and is the protective factor against cardiovascular disease and other diseases. At present, the etiology and pathogenesis of Kawasaki disease (KD) remain unknown, but recent studies have shown that vitamin D insufficiency or deficiency is associated with KD. Vitamin D insufficiency or deficiency may affect KD via its influence on inflammatory response, adipokine, endothelial function, platelet function, and DNA methylation and increase the risk of coronary artery lesions...
December 2016: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
Mary A Mahieu, Rosalind Ramsey-Goldman
Fatigue impacts 80-90% of patients with systemic lupus erythematosus (SLE), and an incomplete understanding of fatigue mechanisms limits effective treatment. Disease activity indices and laboratory markers inconsistently correlate with fatigue severity in SLE populations. Identification of fatigue biomarkers has important implications for understanding pathogenesis and defining novel therapeutic targets, but a paucity of evidence exists for fatigue biomarkers in SLE. The evidence for adipokines, reduced glutathione, iron deficiency, and vitamin D as potential biomarkers for SLE-related fatigue are reviewed...
October 29, 2016: Current Rheumatology Reviews
Rumana J Khan, Samson Y Gebreab, Pia Riestra, Mario Sims, Amadou Gaye, Ruihua Xu, Sharon K Davis
BACKGROUND: Although it is recognized that vitamin D deficiency is associated with cardiovascular disease (CVD) risk factors, and is more common in African Americans (AAs), the pathologic mechanisms by which vitamin D may influence these risk factors are poorly understood. OBJECTIVES: We explored the association between vitamin D status, as reflected by serum 25-hydroxyvitamin D [25(OH)D] concentrations, and CVD risk factors including mean arterial pressure (MAP), fasting plasma glucose (FPG), plasma HDL cholesterol, and waist circumference (WC) in adult AAs...
December 2016: Journal of Nutrition
K V Giudici, R M Fisberg, D M Marchioni, L A Martini
BACKGROUND: Considering that lifestyle and diet are key factors responsible for the increases in adiposity in youth, it is important to understand how vitamin D, adipokines and markers of glucose metabolism are related to physical activity level (PAL) during growth. The present study aimed to investigate associations between physical activity level, adiponectin/leptin ratio, vitamin D status and dietary vitamin D intake among adolescents. METHODS: A cross-sectional study was conducted with adolescents aged 14-18 years old who were living in São Paulo, Brazil...
October 25, 2016: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
Junling Fu, Cong Hou, Lujiao Li, Dan Feng, Ge Li, Mingyao Li, Changhong Li, Shan Gao, Ming Li
BACKGROUND: Betatrophin has been recently reported to play a role in glucose homeostasis by inducing beta-cell proliferation in mice. However, studies in human are inconsistent. As a nutritionally-regulated liver-enriched factor, we hypothesize that betatrophin might be regulated by vitamin D, and ignorance of vitamin D status may explain the discrepancy in previous human studies. The aims of this study were to assess the association between circulating betatrophin and glucose homeostasis as well as other cardiometabolic variables in a cohort of youths at risk for metabolic syndrome and test the possible influence of vitamin D status on the association...
October 6, 2016: Cardiovascular Diabetology
Belinda Spoto, Anna Pisano, Carmine Zoccali
Insulin resistance (IR) is an early metabolic alteration in chronic kidney disease (CKD) patients, being apparent when the glomerular filtration rate is still within the normal range and becoming almost universal in those who reach the end stage of kidney failure. The skeletal muscle represents the primary site of IR in CKD, and alterations at sites beyond the insulin receptor are recognized as the main defect underlying IR in this condition. Estimates of IR based on fasting insulin concentration are easier and faster but may not be adequate in patients with CKD because renal insufficiency reduces insulin catabolism...
December 1, 2016: American Journal of Physiology. Renal Physiology
Zujaja-Tul-Noor Hamid Mehmood, Dimitrios Papandreou
Vitamin D related research continues to expand and theorise regarding its involvement in obesity, as both hypovitaminosis D and obesity strike in pandemic proportions. Vitamin D plays an important role in immune system through Vitamin D Receptors (VDR), which are transcription factors located abundantly in the body. Due to this characteristic, it is potentially linked to obesity, which is a state of inflammation involving the release of cytokines from adipose tissue, and exerting stress on other organs in a state of positive energy balance...
September 15, 2016: Open Access Macedonian Journal of Medical Sciences
T Karonova, O Belyaeva, E B Jude, A Tsiberkin, A Andreeva, E Grineva, P Pludowski
Abdominal obesity is a risk factor for cardiovascular disease and diabetes mellitus and has been associated with vitamin D deficiency. Some studies have suggested an association between obesity and adipokine levels as well as low serum 25-hydroxyvitamin D (25(OH)D) level but the underlying mechanisms of the interlink between vitamin D status and serum leptin and adiponectin concentrations are still disputed. We included 435 residents (132 males) from St. Petersburg, Russia into this study. All subjects had physical examination and demographics noted...
September 11, 2016: Journal of Steroid Biochemistry and Molecular Biology
M Zorlu, M Kiskac, M Cakirca, C Karatoprak, E M Güler, K Çelik, I Gültepe, M A Cikrikcioglu, A Kocyigit
INTRODUCTION: Vitamin D deficiency is a common health problem seen worldwide. Adipokines released from adipose tissue play important roles in the control of appetite and satiety, modulation of body fat distribution, regulation of insulin sensitivity and secretion, control of blood pressure, and regulation of endothelial functions and inflammation. The aim of the present study is to investigate how vitamin D levels affect serum vaspin and omentin levels. MATERIALS AND METHODS: This is a cross-sectional study design...
July 2016: Experimental and Clinical Endocrinology & Diabetes
Rumana J Khan, Pia Riestra, Samson Y Gebreab, James G Wilson, Amadou Gaye, Ruihua Xu, Sharon K Davis
BACKGROUND: The biological actions of vitamin D are mediated through the vitamin D receptor (VDR). Single-nucleotide polymorphisms (SNPs) in the VDR gene have been previously associated with adiposity traits. However, to our knowledge, few studies have included direct measures of adiposity and adipokine concentrations. OBJECTIVE: We examined the association of tagging SNPs in the VDR gene with multiple adiposity measures, including waist circumference (WC), body mass index (BMI), body fat percentage, subcutaneous and visceral adipose tissue (VAT) volume, and serum adipokine (adiponectin and leptin) concentrations in adult African Americans (AAs)...
August 2016: Journal of Nutrition
Prasenjit Manna, Jatin Kalita
Micronutrients are gaining acceptance as an important nutritional therapy for the prevention and/or management of diabetes and its associated health risks. Although a very small quantity of micronutrients are required for specific functions in our bodies, moderate deficiencies can lead to serious health issues. Impaired insulin sensitivity and glucose intolerance play a major role in the development of diabetic pathophysiology. Vitamin K is well known for its function in blood coagulation. Moreover, several human studies reported the beneficial role of vitamin K supplementation in improving insulin sensitivity and glucose tolerance, preventing insulin resistance, and reducing the risk of type 2 diabetes (T2 D)...
July 2016: Nutrition
Madalina Dinca, Maria-Corina Serban, Amirhossein Sahebkar, Dimitri P Mikhailidis, Peter P Toth, Seth S Martin, Michael J Blaha, Matthias Blüher, Camelia Gurban, Peter Penson, Erin D Michos, Adrian V Hernandez, Steven R Jones, Maciej Banach
We aimed to elucidate the role of vitamin D supplementation on adipokines through a systematic review and a meta-analysis of randomized placebo-controlled trials (RCTs). The search included PUBMED, Scopus, Web of Science and Google Scholar through July 1st, 2015. Finally we identified 9 RCTs and 484 participants. Meta-analysis of data from 7 studies did not find a significant change in plasma adiponectin concentrations following vitamin D supplementation (mean difference [MD]: 4.45%, 95%CI: -3.04, 11.93, p=0...
May 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
Emel Kiyak Caglayan, Yaprak Engin-Üstun, Nagihan Sari, Ayşe Yesim Göçmen, Levent Seckin, Mustafa Kara, Asli Metin, M Fevzi Polat
AIM: We aimed to evaluate vitamin D, apelin-36, and visfatin levels in patients with polycystic ovary syndrome (PCOS). MATERIAL AND METHOD: The study was completed in six months, including a total of 110 patients who were admitted to the obstetrics and gynecology polyclinic. Patients with a diagnosis of PCOS were divided into two subgroups according to their vitamin D levels. Thirty-four patients had <10 ng/ml of vitamin D deficiency and 21 patients had 10-30 ng/ml of vitamin D insufficiency, with each being defined as a subgroup...
2016: Gynecological Endocrinology
Sasanka Chakrabarti, Vineet Kumar Khemka, Anindita Banerjee, Gargi Chatterjee, Anirban Ganguly, Atanu Biswas
Alzheimer's disease (AD), the major cause of dementia among the elderly world-wide, manifests in familial and sporadic forms, and the latter variety accounts for the majority of the patients affected by this disease. The etiopathogenesis of sporadic AD is complex and uncertain. The autopsy studies of AD brain have provided limited understanding of the antemortem pathogenesis of the disease. Experimental AD research with transgenic animal or various cell based models has so far failed to explain the complex and varied spectrum of AD dementia...
August 2015: Aging and Disease
Mary Waterhouse, Bich Tran, Peter R Ebeling, Dallas R English, Robyn M Lucas, Alison J Venn, Penelope M Webb, David C Whiteman, Rachel E Neale
Observational studies have suggested that 25-hydroxyvitamin D (25(OH)D) levels are associated with inflammatory markers. Most trials reporting significant associations between vitamin D intake and inflammatory markers used specific patient groups. Thus, we aimed to determine the effect of supplementary vitamin D using secondary data from a population-based, randomised, placebo-controlled, double-blind trial (Pilot D-Health trial 2010/0423). Participants were 60- to 84-year-old residents of one of the four eastern states of Australia...
September 14, 2015: British Journal of Nutrition
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