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Vitamin D and hepatitis C

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https://www.readbyqxmd.com/read/28922657/methods-employed-in-cytofluorometric-assessment-of-eryptosis-the-suicidal-erythrocyte-death
#1
Mohamed Jemaà, Myriam Fezai, Rosi Bissinger, Florian Lang
Suicidal erythrocyte death or eryptosis contributes to or even accounts for anemia in a wide variety of clinical conditions, such as iron deficiency, dehydration, hyperphosphatemia, vitamin D excess, chronic kidney disease (CKD), hemolytic-uremic syndrome, diabetes, hepatic failure, malignancy, arteriitis, sepsis, fever, malaria, sickle-cell disease, beta-thalassemia, Hb-C and G6PD-deficiency, Wilsons disease, as well as advanced age. Moreover, eryptosis is triggered by a myriad of xenobiotics and endogenous substances including cytotoxic drugs and uremic toxins...
September 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28899715/the-relationship-between-25-hydroxyvitamin-d-concentration-and-liver-enzymes-in-overweight-or-obese-adults-cross-sectional-and-interventional-outcomes
#2
Negar Naderpoor, Aya Mousa, Maximilian de Courten, Robert Scragg, Barbora de Courten
Vitamin D deficiency is prevalent in individuals with non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis. However, there is limited and inconsistent data on the effect of vitamin D supplementation on liver function. Hepatic enzymes have been used as surrogate markers for NAFLD and have been associated with metabolic syndrome. We examined the relationships between 25-hydroxyvitamin D (25(OH)D) and γ-glutamyl transferase (GGT), alanine aminotransferase (ALT), alkaline phosphatase (ALP) in 120 drug-naïve individuals with no history of liver disease...
September 9, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28833855/efficacy-of-vitamin-d-supplementation-in-combination-with-conventional-antiviral-therapy-in-patients-with-chronic-hepatitis-c-infection-a-meta-analysis-of-randomised-controlled-trials
#3
H-B Kim, S-K Myung, Y-J Lee, B-J Park
BACKGROUND: Although a contributory role of vitamin D levels for the development of chronic hepatitis C has been suggested, the efficacy of vitamin D supplementation in combination with conventional antiviral therapy consisting of pegylated interferon-α (Peg-IFN-α) injection and oral ribavirin (RBV) remains unclear. We investigated its efficacy in the treatment of chronic hepatitis C via a meta-analysis of randomised controlled trials. METHODS: We searched PubMed, EMBASE, the Cochrane Library, ClinicalTrials...
August 18, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28827788/vitamin-d-supplementation-improves-serum-markers-associated-with-hepatic-fibrogenesis-in-chronic-hepatitis-c-patients-a-randomized-double-blind-placebo-controlled-study
#4
Piyawat Komolmit, Sayamon Kimtrakool, Sirinporn Suksawatamnuay, Kessarin Thanapirom, Kanita Chattrasophon, Panarat Thaimai, Chintana Chirathaworn, Yong Poovorawan
Hepatic fibrosis is the net accumulation of matrix tissue components which controlled by pro-fibrolytic enzymes, matrix metalloproteinases (MMPs), and pro-fibrotic cytokine, TGF-β1, and enzymes, tissue inhibitors of MMPs (TIMPs). Vitamin D (VD) supplementation has been shown to reverse these processes in vitro and in vivo. This study sought to determine the effect of VD supplementation on serum fibrotic markers in chronic hepatitis C (CHC) patients. Fifty-four CHC patients with VD deficiency were randomized into two groups, a VD group (n = 29) and a placebo group (n = 29)...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28809744/effect-of-vitamin-d-serum-levels-and-gc-gene-polymorphisms-in-liver-fibrosis-due-to-chronic-hepatitis-c
#5
Laura A Azevedo, Ursula Matte, Themis R Silveira, Jacqueline W Bonfanti, Juliana P Bruch, Mário R Álvares-da-Silva
INTRODUCTION AND AIM: Vitamin D has been associated with chronic liver diseases and low vitamin levels may contribute to progression of chronic hepatitis C. The aim of this study was to evaluate the influence of vitamin D serum levels and GC gene polymorphisms in the severity of liver fibrosis in patients with chronic hepatitis C genotype 1. MATERIAL AND METHODS: Cross-sectional study that enrolled 132 adult patients with chronic hepatitis C genotype 1 attended at the outpatient Clinic of Gastroenterology Division at Hospital de Clínicas de Porto Alegre...
September 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28780092/whole-body-propionate-and-glucose-metabolism-of-multiparous-dairy-cows-receiving-folic-acid-and-vitamin-b12-supplements
#6
M Duplessis, H Lapierre, B Ouattara, N Bissonnette, D Pellerin, J-P Laforest, C L Girard
This study was undertaken to evaluate the effect of supplementation of folic acid and vitamin B12 on glucose and propionate metabolism. Twenty-four multiparous cows were assigned according to a complete block design in a 2 × 2 factorial arrangement to one of the following treatments: (1) saline 0.9% NaCl, (2) 320 mg of folic acid, (3) 10 mg of vitamin B12, or (4) 320 mg of folic acid and 10 mg of vitamin B12. Intramuscular injections were given weekly from 3 wk before the expected calving date until 9 wk postpartum...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28777671/protective-effect-of-azadirachta-indica-and-vitamin-e-against-arsenic-acid-induced-genotoxicity-and-apoptosis-in-rats
#7
Ademola Adetokunbo Oyagbemi, Temidayo Olutayo Omobowale, Olufunke Eunice Ola-Davies, Olumuyiwa Abiola Adejumobi, Ebunoluwa Rachael Asenuga, Funmilola Kehinde Adeniji, Adeolu Alex Adedapo, Momoh Audu Yakubu
Sodium arsenite (NaAsO2) is one of the major environmental toxicants with severe toxicological consequences in some developing and developed countries. Rats in Group A received normal saline. Genotoxicity and apoptosis were induced by single intraperitoneal injection of 10 mg/kg sodium arsenite to rats in Groups B-F. Rats in Groups C and D had earlier been pretreated with Azadirachta indica (100 and 200 mg/kg) or E and F with vitamin E (50 and 100 mg/kg), respectively. Markers of oxidative stress, inflammation, hepatic damage, genotoxicity, and apoptosis were assessed...
August 4, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28753979/lack-of-association-between-hepatitis-c-virus-core-gene-variation-70-91aa-and-insulin-resistance
#8
Letícia de Paula Scalioni, Allan Peres da Silva, Juliana Custódio Miguel, Márcia Paschoal do Espírito Santo, Vanessa Alves Marques, Carlos Eduardo Brandão-Mello, Cristiane Alves Villela-Nogueira, Lia Laura Lewis-Ximenez, Elisabeth Lampe, Livia Melo Villar
The role of hepatitis C virus (HCV) in insulin resistance (IR) is not fully understood. The aim of this study was to determine the impact of amino acid (aa) substitutions in the core region of HCV according to IR and to identify clinical and laboratory associations. Ninety-two treatment-naive HCV patients were recruited to determine laboratory data and blood cell count. IR was determined using Homeostasis Model Assessment (HOMA) index where IR was defined as HOMA ≥2. HCV RNA load and genotype were determined by Abbott Real time HCV...
July 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28727051/carotenoid-intake-and-scd-genotype-exert-complementary-effects-over-fat-content-and-fatty-acid-composition-in-duroc-pigs
#9
E Henriquez-Rodriguez, R N Pena, A R Seradj, L Fraile, P Christou, M Tor, J Estany
Nutritional and genetic strategies are needed to enhance intramuscular fat (IMF) and MUFA content without altering carcass leanness. Dietary vitamin A restriction has been suggested to specifically promote IMF, whereas a polymorphism of the () gene has shown to specifically increase MUFA. The purpose of this study was to investigate the combined effects of provitamin A (PVA) carotenoid intake and genotype (>) on hepatic retinoid content and on the liver, muscle (LM and gluteus medius [GM]), and subcutaneous fat (SF) content and fatty acid composition...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28703134/genetic-variants-underlying-vitamin-d-metabolism-and-vdr-tgf%C3%AE-1-smad3-interaction-may-impact-on-hcv-progression-a-study-based-on-dbgap-data-from-the-halt-c-study
#10
Laura A de Azevedo, Ursula Matte, Themis R da Silveira, Mário R Álvares-da-Silva
Vitamin D deficiency is prevalent in liver disease and vitamin D has been shown to decrease hepatic fibrosis through an anti-TGFβ-1/SMAD3 effect mediated by the vitamin D receptor. Thus, we hypothesized that genetic variants involved in vitamin D metabolism and/or VDR/TGFβ-1/SMAD3 interaction could impact on the progression of chronic HCV. We obtained or imputed genotypes for 40 single nucleotide polymorphisms (SNPs) located in genes implicated in vitamin D metabolism from the HALT-C cohort via dbGaP. The HALT-C study followed 692 chronic HCV patients over 4 years, evaluating clinical outcomes including worsening of fibrosis, hepatic decompensation (gastric/esophageal bleeding, CTP>7, ascites, spontaneous bacterial peritonitis and encephalopathy), development of hepatocellular carcinoma, and liver death...
July 13, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28687643/cancer-incidence-attributable-to-lifestyle-and-environmental-factors-in-alberta-in-2012-summary-of-results
#11
Anne Grundy, Abbey E Poirier, Farah Khandwala, Xin Grevers, Christine M Friedenreich, Darren R Brenner
BACKGROUND: Estimates of the proportion of cancer cases that can be attributed to modifiable risk factors are not available for Canada and, more specifically, Alberta. The purpose of this study was to estimate the total proportion of cancer cases in Alberta in 2012 that could be attributed to a set of 24 modifiable lifestyle and environmental risk factors. METHODS: We estimated summary population attributable risk estimates for 24 risk factors (smoking [both passive and active], overweight and obesity, inadequate physical activity, diet [inadequate fruit and vegetable consumption, inadequate fibre intake, excess red and processed meat consumption, salt consumption, inadequate calcium and vitamin D intake], alcohol, hormones [oral contraceptives and hormone therapy], infections [Epstein-Barr virus, hepatitis B and C viruses, human papillomavirus, Helicobacter pylori], air pollution, natural and artificial ultraviolet radiation, radon and water disinfection by-products) by combining population attributable risk estimates for each of the 24 factors that had been previously estimated...
July 7, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28658959/vitamin-c-attenuates-methotrexate-induced-oxidative-stress-in-kidney-and-liver-of-rats
#12
M Savran, E Cicek, D K Doguc, H Asci, S Yesilot, I A Candan, B Dagdeviren, F N Cankara, M Oncu, A C Uğuz, M K Ozer
Like several other anticancer drugs, methotrexate (MTX) causes side effects, such as neuropathic pain, hepatotoxicity, and nephrotoxicity. Abnormal production of reactive oxygen species has been suspected in the pathophysiology of MTX-induced hepatorenal toxicity. Therefore, the aim of this study was to investigate the probable protective role of vitamin C (Vit C) on oxidative stress induced by MTX in the liver and kidney tissues of rats. A total of 32 rats were randomly and equally divided into four groups...
June 29, 2017: Physiology International
https://www.readbyqxmd.com/read/28657840/therapeutic-warfarin-use-and-the-extrahepatic-functions-of-vitamin-k-dependent-proteins
#13
C J Donaldson, D J Harrington
The impact of warfarin therapy on the functions of extrahepatic vitamin K-dependent proteins (VKDP) is less clearly understood and less widely recognised in clinical practice than that on the hepatic counterparts (clotting factors II, VII, IX and X). Warfarin inhibits osteocalcin, an abundant extrahepatic VKDP involved in the mineralisation and maturation of bone and thus, primarily by this mechanism, may have an adverse effect on bone health. Whilst some studies do link warfarin use to an increase in osteoporosis and fracture risk others have not...
June 28, 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/28634113/vitamin-d3-supplementation-attenuates-the-early-stage-of-mouse-hepatocarcinogenesis-promoted-by-hexachlorobenzene-fungicide
#14
Guilherme R Romualdo, Renata L Goto, Ana A H Fernandes, Bruno Cogliati, Luis F Barbisan
Hexachlorobezene (HCB), a fungicide widely distributed in the environment, promotes the development of hepatocellular preneoplastic lesions (PNL) and tumors in rodents. In contrast, vitamin D3 (VD3) supplementation presents a potential role for the prevention/treatment of chronic liver diseases. Thus, we investigated whether VD3 supplementation attenuates the early stage of HCB-promoted hepatocarcinogenesis. Female Balb/C mice were injected a single dose of diethylnitrosamine (DEN, 50 mg/kg) at postnatal day 15...
September 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28548312/vitamin-d-dependent-rickets-type-1b-25-hydroxylase-deficiency-a-rare-condition-or-a-misdiagnosed-condition
#15
Arnaud Molin, Arnaud Wiedemann, Nick Demers, Martin Kaufmann, Jérémy Do Cao, Laurent Mainard, Brigitte Dousset, Pierre Journeau, Geneviève Abeguile, Nadia Coudray, Hervé Mittre, Nicolas Richard, Georges Weryha, Arthur Sorlin, Glenville Jones, Marie-Laure Kottler, Francois Feillet
Vitamin D requires a two-step activation by hydroxylation: The first step is catalyzed by hepatic 25-hydroxylase (CYP2R1, 11p15.2) and the second one is catalyzed by renal 1α-hydroxylase (CYP27B1, 12q13.1), which produces the active hormonal form of 1,25-(OH)2 D. Mutations of CYP2R1 have been associated with vitamin D-dependent rickets type 1B (VDDR1B), a very rare condition that has only been reported to affect 4 families to date. We describe 7 patients from 2 unrelated families who presented with homozygous loss-of-function mutations of CYP2R1...
May 26, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28537652/efficacy-and-safety-of-very-low-calorie-ketogenic-diet-a-double-blind-randomized-crossover-study
#16
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/28523927/retinoid-bms411-4-5-5-dimethyl-8-phenyl-5-6-dihydronaphthalen-2-yl-carbonyl-amino-benzoic-acid-a-potential-inhibitor-of-ns5a-protein-of-hepatitis-c-virus-a-candidate-for-combined-therapy-of-hepatitis-c-infection
#17
S Ibrahim, M J Asad, R T Mahmood, F H Wattoo, S Akhter, D Shahwar
Hepatitis C infection is a serious health issue worldwide caused by hepatitis C virus (HCV). There is an urgent need of search for new direct acting antiviral drugs due to the rapid development of drug resistance. The HCV NS5A protein is involved in creating resistance against antiviral therapy and there are also many reports that vitamin A deficiency is associated with non-responsiveness to antiviral treatment in HCV infected patients. So the present in silico study was aimed to find the relation between vitamin A deficiency and the NS5A protein's function in antiviral resistance...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28469365/25-vitamin-d-levels-in-chronic-hepatitis-c-infection-association-with-cirrhosis-and-sustained-virologic-response
#18
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
#19
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: Integrative medicine research
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
#20
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
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