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Vitamin D and hepatitis C

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https://www.readbyqxmd.com/read/29140875/bone-mineral-density-declines-twice-as-quickly-among-hiv-infected-women-compared-to-men
#1
Kristine M Erlandson, Jordan E Lake, Myung Sim, Julian Falutz, Carla M Prado, Ana Rita Domingues da Silva, Todd T Brown, Giovanni Guaraldi
BACKGROUND: Initial declines in bone mineral density (BMD) following antiretroviral therapy (ART) initiation in HIV are well described, but data on long-term changes and risk factors for decline, particularly among women, are limited. METHODS: HIV-infected men and women in the Modena Metabolic Clinic underwent dual-energy X-ray absorptiometry (DXA) scans every 6-12 months for up to 10 years (median 4.6 years). Mixed effect regression model in combined and sex-stratified models determined annual rates of decline and clinical factors associated with BMD...
November 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29135370/pharmacokinetics-based-adjusted-versus-standard-dose-of-ribavirin-does-not-improve-virologic-response-rates-in-chronic-hepatitis-c-genotype-4-patients-a-randomized-controlled-trial
#2
Ibrahim H Altraif, Faisal Sanai, Mohammed A Babatin, Abduljaleel A Alalwan, Ayman A Abdo, Waleed Alhamoudi, Musthafa Peedikayil, Hamdan Alghamdi, Fahad Alsohaibani, Khalid A Alswat, Shazia Murtaza, Abdullah Alghamdi, Sara Altraif, Abdulrahman Aljumah, Fayaz A Handoo, Abdulkareem M AlBekairy, Hamad I Al-Ashgar, Mohammed Alquaiz, Mohammed A Alblawi, Waleed AlTamimi, Véronique Loustaud-Ratti, Pierre Marquett
Optimal doses of Ribavirin (RBV) for hepatitis C virus (HCV) treatment are not known. To assess the safety and efficacy of PegIFNalfa-2a in combination with an adjusted (ADJ) RBV dose based on early pharmacokinetics versus a fixed standard (STD) dose of RBV in chronic HCV genotype (GT) 4-naive patients in a randomized trial. One hundred eighty-one patients were randomized. The baseline variables were similar in both arms and females were 50.3% of the patients, 76.5% had minimal-moderate fibrosis (F0-2). Sustained virologic response (SVR) was achieved in 99 (54...
November 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29122389/the-nutritional-geometry-of-liver-disease-including-non-alcoholic-fatty-liver-disease-nafld
#3
REVIEW
Stephen J Simpson, David Raubenheimer, Victoria C Cogger, Laurence Macia, Samantha M Solon-Biet, David G Le Couteur, Jacob George
Nutrition has a profound effect on chronic liver disease, especially non-alcoholic fatty liver disease (NAFLD). Most observational studies and clinical trials have focussed on the effects of total energy intake, or the intake of individual macronutrients and certain micronutrients, such as vitamin D, on liver disease. Although these studies have shown the importance of nutrition on hepatic outcomes, there is not yet any unifying framework for understanding the relationship between diet and liver disease. The Geometric Framework for Nutrition (GFN) is an innovative model for designing nutritional experiments or interpreting nutritional data that can determine the effects of nutrients and their interactions on animal behaviour and phenotypes...
November 3, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29099543/vitamin-d-supplementation-for-chronic-liver-diseases-in-adults
#4
REVIEW
Goran Bjelakovic, Dimitrinka Nikolova, Marko Bjelakovic, Christian Gluud
BACKGROUND: Vitamin D deficiency is often reported in people with chronic liver diseases. Therefore, improving vitamin D status could have a beneficial effect on people with chronic liver diseases. OBJECTIVES: To assess the beneficial and harmful effects of vitamin D supplementation in people with chronic liver diseases. SEARCH METHODS: We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, Science Citation Index Expanded, and Conference Proceedings Citation Index - Science...
November 3, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29040465/the-fut2-secretor-variant-p-trp154ter-influences-serum-vitamin-b12-concentration-via-holo-haptocorrin-but-not-holo-transcobalamin-and-is-associated-with-haptocorrin-glycosylation
#5
Aneliya Velkova, Jennifer E L Diaz, Faith Pangilinan, Anne M Molloy, James L Mills, Barry Shane, Erica Sanchez, Conal Cunningham, Helen McNulty, Cheryl D Cropp, Joan E Bailey-Wilson, Alexander F Wilson, Lawrence C Brody
Vitamin B12 deficiency is common in older individuals. Circulating vitamin B12 concentration can be used to diagnose deficiency but this test has substantial false positive and false negative rates. We conducted genome-wide association studies (GWAS) in which we resolved total serum vitamin B12 into the fractions bound to transcobalamin and haptocorrin: two carrier proteins with very different biological properties. We replicated reported associations between total circulating vitamin B12 concentrations and a common null variant in FUT2...
October 12, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28956816/qualitative-and-quantitative-evaluation-of-dietary-intake-in-patients-with-non-alcoholic-steatohepatitis
#6
Alessandro Federico, Marcello Dallio, Giuseppe Gerardo Caprio, Antonietta Gerarda Gravina, Desiree Picascia, Mario Masarone, Marcello Persico, Carmela Loguercio
There are very few reports about the intake of nutrients for the development or progression of non-alcoholic steatohepatitis (NASH). The aim of this study was to identify the dietary habits and the nutrient intake in patients with NASH, in comparison to chronic hepatitis C (HCV)-related patients. We prospectively evaluated the intake of macronutrients and micronutrients in 124 NAFLD and 162 HCV patients, compared to 2326 subjects as a control group. We noticed major differences in macro- and micronutrients intakes in NASH and HCV patients compared to controls...
September 28, 2017: Nutrients
https://www.readbyqxmd.com/read/28948825/vitamin-d-supplementation-changed-relationships-not-levels-of-metabolic-hormonal-parameters-in-autoimmune-thyroiditis
#7
K Vondra, R Bílek, P Matucha, M Salátová, M Vosátková, L Stárka, R Hampl
In women with chronic autoimmune thyroiditis and vitamin D deficiency we have found reference levels of relevant metabolic-hormonal parameters except for parathormone and total calcium. Three months supplementation with vitamin D (4300 IU/day, cholekalciferol) did not lead to significant changes of investigated hormonal parameters, while the levels of parathormone and calcium reached normal levels. However, a correlation analysis revealed marked changes in mutual relations. First, an inverse correlation of vitamin D with parathormone, insulin secretion (C peptide, insulin) and its efficiency (HOMA IR) disappeared...
September 26, 2017: Physiological Research
https://www.readbyqxmd.com/read/28922657/methods-employed-in-cytofluorometric-assessment-of-eryptosis-the-suicidal-erythrocyte-death
#8
REVIEW
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...
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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...
October 2017: British Journal of Biomedical Science
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