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Vitamin D and liver

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https://www.readbyqxmd.com/read/28539530/active-form-of-vitamin-d-ameliorates-non-alcoholic-fatty-liver-disease-by-alleviating-oxidative-stress-in-a-high-fat-diet-rat-model
#1
Chong-Gui Zhu, Ya-Xin Liu, Hao Wang, Bao-Ping Wang, Hui-Qi Qu, Bao-Li Wang, Mei Zhu
The purpose of this study was to determine whether treatment using the active form of vitamin D (1,25(OH)2D3) could protect against high-fat diet (HFD)-induced non-alcoholic fatty liver disease (NAFLD) in rats and ameliorate oxidative stress. Male Sprague-Dawley rats were divided into three groups and treated with standard chow, HFD, or HFD plus intraperitoneal injection of 1,25(OH)2D3 (5 μg/kg body weight, twice per week), respectively, for 16 weeks. Serum lipid profiles, hepatic function, intrahepatic lipid, and calcium levels were determined...
May 23, 2017: Endocrine Journal
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/28503574/vitamin-d-modulates-hematological-parameters-and-cell-migration-into-peritoneal-and-pulmonary-cavities-in-alloxan-diabetic-mice
#3
Leonardo M Bella, Isis Fieri, Fernando H G Tessaro, Eduardo L Nolasco, Fernanda P B Nunes, Sabrina S Ferreira, Carolina B Azevedo, Joilson O Martins
Background/Aims. The effects of cholecalciferol supplementation on the course of diabetes in humans and animals need to be better understood. Therefore, this study investigated the effect of short-term cholecalciferol supplementation on biochemical and hematological parameters in mice. Methods. Male diabetic (alloxan, 60 mg/kg i.v., 10 days) and nondiabetic mice were supplemented with cholecalciferol for seven days. The following parameters were determined: serum levels of 25-hydroxyvitamin D, phosphorus, calcium, urea, creatinine, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, red blood cell count, white blood cell count (WBC), hematocrit, hemoglobin, differential cell counts of peritoneal lavage (PeL), and bronchoalveolar lavage (BAL) fluids and morphological analysis of lung, kidney, and liver tissues...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28492143/a-direct-assay-for-measuring-free-25-hydroxyvitamin-d
#4
Heureux Nicolas, Ernst Lindhout, Leon Swinkels
Recent studies suggest that the concentration and genotype of vitamin D binding protein (VDBP) are important factors that determine the bioavailability of 25-hydroxyvitamin D [25(OH)D] in blood. Accumulating data indicate that, e.g., in pregnant women, hemodialysis patients, chronic kidney disease, liver failure, and bladder and pancreatic cancers, the measurement of free 25(OH)D in serum provides more relevant diagnostic information than measurement of total 25(OH)D. The aim of this study was to develop and validate an ELISA for direct measurement of free 25(OH)D in serum...
May 11, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28490135/polyunsaturated-lipids-and-vitamin-a-oxidation-during-cod-liver-oil-in-vitro-gastrointestinal-digestion-antioxidant-effect-of-added-bht
#5
Bárbara Nieva-Echevarría, Encarnación Goicoechea, María D Guillén
The extent of cod liver oil hydrolysis and oxidation during in vitro gastrointestinal digestion was investigated by Proton Nuclear Magnetic Resonance ((1)H NMR) and Solid Phase Microextraction-Gas Chromatography/Mass Spectrometry (SPME-GC/MS). These techniques evidenced the degradation of polyunsaturated ω-3 and ω-6 lipids and, for the first time, that of vitamin A, naturally present in cod liver oil. Cis,trans-conjugated dienes associated with hydroperoxides, as well as monoepoxides, cis,trans-2,4-alkadienals, 4-hydroperoxy- and 4-hydroxy-2-alkenals, and several vitamin A derived metabolites were generated...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28469365/25-vitamin-d-levels-in-chronic-hepatitis-c-infection-association-with-cirrhosis-and-sustained-virologic-response
#6
David Backstedt, Mark Pedersen, Myunghan Choi, Anil Seetharam
BACKGROUND: Low serum 25-Vitamin D levels are associated with advanced fibrosis in hepatitis C infection. Vitamin D supplementation has been hypothesized to augment response rates to interferon-based therapy. To date, no investigation has evaluated vitamin D levels during direct-acting antiviral therapy. We aimed to evaluate the prevalence of vitamin D deficiency in cirrhotic and non-cirrhotic cohorts, the predictive value of pretreatment levels for a sustained virologic response, and the changes in 25-OH vitamin D levels during direct-acting antiviral therapy...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28462129/hepato-renal-protective-effects-of-hydroethanolic-extract-of-senna-alata-on-enzymatic-and-nonenzymatic-antioxidant-systems-in-streptozotocin-induced-diabetic-rats
#7
Mohanasundaram Sugumar, D Victor Arokia Doss, P N Prasad Maddisetty
BACKGROUND: Oxidative stress induced tissue damage might be the major cause for diabetes mellitus and its associated complications. The management of such oxidative stress is the biggest challenge over the decade. The main objective was to analyze the protective effect of ethanolic extract of Senna alata L leaves on enzymatic and nonenzymatic antioxidant systems of hepatic and renal tissues in Streptozotocin-induced diabetes in rats. METHODS: The use of streptozotocin diabetes was induced in the experimental rats and the subsequent therapeutic effects of standard drug glibenclamide and Senna alata L were compared...
December 2016: Integr Med Res
https://www.readbyqxmd.com/read/28458767/evaluation-of-vitamin-d3-intakes-up-to-15-000-international-units-day-and-serum-25-hydroxyvitamin-d-concentrations-up-to-300-nmol-l-on-calcium-metabolism-in-a-community-setting
#8
S M Kimball, N Mirhosseini, M F Holick
Supplementation by the general public with vitamin D at doses above the Tolerable Upper Level of Intake (UL) is becoming quite common. The objective of the current analysis was to characterize the effect of vitamin D supplementation at doses up to 15,000 IU/d in a community-based program on vitamin D status, calcium homeostasis as well as on kidney, liver and immune function. We evaluated data collected for 3,882 participants in a community program for whom there were blood measurements at program entry and at follow-up within 6-18 months between 2013 and 2015...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/28452835/vitamin-d-status-cardiometabolic-liver-and-mental-health-status-in-obese-youth-attending-a-pediatric-weight-management-centre
#9
Krista MacDonald, Kristine Godziuk, Jason Yap, Rena LaFrance, Mohammad Ansarian, Andrea Haqq, Diana R Mager
BACKGROUND: Vitamin D (VitD) deficiency and obesity are reaching epidemic proportions in North America, particularly in those with co-morbid conditions such as diabetes or liver disease. The study objective was to determine the prevalence of suboptimal vitD status and interrelationships with anthropometric, cardio-metabolic, liver, mental health and lifestyle (sleep/screen time) parameters in an ambulatory population of obese children. METHODS: Children (2-18 years) old attending a pediatric weight management clinic (n = 217) were retrospectively reviewed...
April 27, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28446519/cationic-polystyrene-resolves-nonalcoholic-steatohepatitis-nash-obesity-and-metabolic-disorders-by-promoting-eubiosis-of-gut-microbiota-and-decreasing-endotoxemia
#10
Airu Zhu, Jingjing Chen, Pengfei Wu, Mei Luo, Yilan Zeng, Han Zheng, Li Zhang, Zishou Cheng, Qun Sun, Wenwen Li, Yixiang Duan, Danmei Su, Zhixiong Xiao, Zhongping Duan, Sujun Zheng, Li Bei, Xiaohui Zhang, Zhongyuan Ju, Richard Hu, Stephen J Pandol, Yuan-Ping Han
A pandemic of metabolic diseases, consisting of type-2 diabetes, non-alcoholic fatty liver diseases (NAFLD) and obesity, has imposed critical challenges for societies worldwide, prompting investigation of underlying mechanisms and exploration of low cost and effective treatment. In this report, we demonstrate that metabolic disorders in mice generated by feeding with a high-fat diet without dietary vitamin D (HD) can be prevented by oral administration of polycationic amine resin. Oral administration of cholestyramine , but not the control uncharged polystyrene, was able to sequester negatively charged bacterial endotoxin in the gut, leading to (1) reducing plasma endotoxin levels, (2) resolving systemic inflammation and hepatic steatohepatitis,and (3) improving insulin sensitivity...
April 26, 2017: Diabetes
https://www.readbyqxmd.com/read/28443804/25-oh-d-levels-in-relation-to-gender-overweight-insulin-resistance-and-inflammation-in-a-cross-sectional-cohort-of-northern-italian-workers-evidence-in-support-of-preventive-health-care-programs
#11
Luisella Vigna, Letizia Cassinelli, Amedea Silvia Tirelli, Irene Felicetta, Filomena Napolitano, Laura Tomaino, Michela Mutti, Claudia Eleonora Barberi, Luciano Riboldi
OBJECTIVE: In recent years, the welfare of workers and the prevention of chronic disabling diseases has become a topic of great interest. This study investigates serum levels of total 25-hydroxyvitamin D (25(OH)D) in a cohort of overweight-obese and insulin-resistant northern Italian indoor workers in apparent good health followed a nutritional education program. METHODS: An observational cross-sectional study on 385 patients (females = 291, males = 94), age range 18-69 years and body mass index (BMI) > 25 kg/m(2), was performed at the Department of Occupational Medicine Milan, Italy, latitude 45...
April 26, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28442273/the-role-of-bile-acids-in-nonalcoholic-fatty-liver-disease-and-nonalcoholic-steatohepatitis
#12
REVIEW
Monica D Chow, Yi-Horng Lee, Grace L Guo
Nonalcoholic fatty liver disease is growing in prevalence worldwide. It is marked by the presence of macrosteatosis on liver histology but is often clinically asymptomatic. However, it can progress into nonalcoholic steatohepatitis which is a more severe form of liver disease characterized by inflammation and fibrosis. Further progression leads to cirrhosis, which predisposes patients to hepatocellular carcinoma or liver failure. The mechanism by which simple steatosis progresses to steatohepatitis is not entirely clear...
May 5, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28415985/vitamin-d-related-gene-polymorphism-predict-treatment-response-to-pegylated-interferon-based-therapy-in-thai-chronic-hepatitis-c-patients
#13
Kessarin Thanapirom, Sirinporn Suksawatamnuay, Wattana Sukeepaisarnjaroen, Pisit Tangkijvanich, Sombat Treeprasertsuk, Panarat Thaimai, Rujipat Wasitthankasem, Yong Poovorawan, Piyawat Komolmit
BACKGROUND: Patients with chronic hepatitis C (HCV) infection have high prevalence of vitamin D deficiency. Genome-wide association study data has showed that several genetic variants within vitamin D cascade affect vitamin D function. This study aimed to determine whether genetic polymorphisms of genes in the vitamin D pathway are associated with treatment responses to pegylated interferon (PEG-IFN)-based therapy in patients with chronic HCV infection. METHODS: The study included 623 Thai patients from 2 university hospitals diagnosed with chronic HCV infection who were treated with a PEG-IFN and ribavirin...
April 17, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28411010/effects-of-vitamin-d-and-resveratrol-on-metabolic-associated-markers-in-liver-and-adipose-tissue-from-samp8-mice
#14
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
#15
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/28392960/anti-aging-effect-of-nigella-sativa-fixed-oil-on-d-galactose-induced-aging-in-mice
#16
Mahdieh Jafari Shahroudi, Soghra Mehri, Hossein Hosseinzadeh
OBJECTIVES: Aging is an unconscious and gradual process that can lead to changes in biological systems. Induction of oxidative stress and apoptosis, hepatotoxicity and neurotoxicity are involved in the aging process. Regarding the antioxidant property of black seed oil, the aim of this study was to evaluate the anti-aging effect of Nigella sativa (N. sativa) oil on d-galactose-induced aging in mice. METHODS: For induction of aging, D-galactose (500 mg/kg, subcoutaneously SC) was administrated to male mice for 42 days...
March 2017: Journal of Pharmacopuncture
https://www.readbyqxmd.com/read/28381532/single-high-dose-vitamin-a-supplementation-to-neonatal-piglets-results-in-a-transient-dose-response-in-extrahepatic-organs-and-sustained-increases-in-liver-stores
#17
Bryan M Gannon, Christopher R Davis, Nivedita Nair, Michael Grahn, Sherry A Tanumihardjo
Background: Neonatal vitamin A (VA) supplementation is being evaluated as a public health policy for preventing infant mortality, but inconsistencies in mortality trials demand mechanistic work to determine biological plausibility.Objectives: We investigated the absorption, distribution, and storage of single large oral VA doses administered shortly after birth.Methods: Fifty pregnant sows (Sus scrofas domesticas) were fed a VA-free diet. Male and female newborn piglets (n = 313) were orally administered 0, 25,000, 50,000, or 200,000 IU VA in oil within 12 h of birth when mean ± SD weight was 1...
April 5, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28380384/clock-regulation-of-metabolites-reveals-coupling-between-transcription-and-metabolism
#18
Saikumari Y Krishnaiah, Gang Wu, Brian J Altman, Jacqueline Growe, Seth D Rhoades, Faith Coldren, Anand Venkataraman, Anthony O Olarerin-George, Lauren J Francey, Sarmistha Mukherjee, Saiveda Girish, Christopher P Selby, Sibel Cal, Ubeydullah Er, Bahareh Sianati, Arjun Sengupta, Ron C Anafi, I Halil Kavakli, Aziz Sancar, Joseph A Baur, Chi V Dang, John B Hogenesch, Aalim M Weljie
The intricate connection between the circadian clock and metabolism remains poorly understood. We used high temporal resolution metabolite profiling to explore clock regulation of mouse liver and cell-autonomous metabolism. In liver, ∼50% of metabolites were circadian, with enrichment of nucleotide, amino acid, and methylation pathways. In U2 OS cells, 28% were circadian, including amino acids and NAD biosynthesis metabolites. Eighteen metabolites oscillated in both systems and a subset of these in primary hepatocytes...
April 4, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28376768/long-term-effects-of-vitamin-d-supplementation-in-vitamin-d-deficient-obese-children-participating-in-an-integrated-weight-loss-programme-a-double-blind-placebo-controlled-study-rationale-for-the-study-design
#19
Agnieszka Szlagatys-Sidorkiewicz, Michał Brzeziński, Agnieszka Jankowska, Paulina Metelska, Magdalena Słomińska-Frączek, Piotr Socha
BACKGROUND: Obesity is associated not only with an array of metabolic disorders (e.g. insulin resistance, hiperinsulinemia, impaired tolerance of glucose, lipid disorders) but also skeletal and joint abnormalities. Recently, a pleiotropic role of vitamin D has been emphasized. Obese children frequently present with vitamin D deficiency, and greater fat mass is associated with lower serum concentration of this vitamin. Although some evidence suggests that weight loss may affect vitamin D status, this issue has not been studied extensively thus far...
April 4, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28348495/role-of-illness-perception-and-self-efficacy-in-lifestyle-modification-among-non-alcoholic-fatty-liver-disease-patients
#20
Shira Zelber-Sagi, Shiran Bord, Gali Dror-Lavi, Matthew Lee Smith, Samuel D Towne, Assaf Buch, Muriel Webb, Hanny Yeshua, Assy Nimer, Oren Shibolet
AIM: To describe the relationships between non-alcoholic fatty-liver disease (NAFLD) patient's disease consequences and treatment perceptions, self-efficacy, and healthy lifestyle maintenance. METHODS: A cross-sectional study among 146 ultrasound diagnosed NAFLD patients who visited the fatty liver clinic at the Tel-Aviv Medical Center. Eighty-seven of these individuals, participated in a clinical trial of physical activity and underwent fasting blood tests, analyzed at the same lab...
March 14, 2017: World Journal of Gastroenterology: WJG
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