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Vitamin D and hepatitis C

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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
#1
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/28405324/25-oh-vitamin-d-level-has-no-impact-on-the-efficacy-of-antiviral-therapy-in-na%C3%A3-ve-genotype-1-hcv-infected-patients
#2
Arthur Belle, Emmanuel Gizard, Guillaume Conroy, Anthony Lopez, Magali Bouvier-Alias, Stéphanie Rouanet, Laurent Peyrin-Biroulet, Jean-Michel Pawlotsky, Jean-Pierre Bronowicki
BACKGROUND AND AIM: The impact of 25-OH vitamin D on sustained viral response (SVR) to antiviral therapy and on fibrosis progression in hepatitis C is debated. We assessed the impact of 25-OH vitamin D concentration on the efficacy of antiviral therapy in naïve genotype 1 hepatitis C virus (HCV)-infected patients. METHODS: The study population consisted of treatment-naïve genotype 1 patients enrolled in a randomised controlled trial. A total of 516 patients received peginterferon α-2a 180 µg/week plus ribavirin 800 mg/day for 24 weeks...
February 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28376103/correction-of-vitamin-d-deficiency-facilitated-suppression-of-ip-10-and-dpp-iv-levels-in-patients-with-chronic-hepatitis-c-a-randomised-double-blinded-placebo-control-trial
#3
Piyawat Komolmit, Kriangsak Charoensuk, Kessarin Thanapirom, Sirinporn Suksawatamnuay, Panarat Thaimai, Chintana Chirathaworn, Yong Poovorawan
Vitamin D deficiency was common among patients with chronic hepatitis C (CHC) and had negative influence on treatment outcome. Correction of vitamin D deficiency improved treatment response. Interferon gamma-induced protein 10 (IP-10) and enzyme dipeptidyl peptidase-4 (DPP IV) involved in inflammatory responses in CHC. Their higher levels at pretreatment of CHC could predict poorer responses. Vitamin D suppressed expression of IP-10 from monocytes in vitro. In CHC patients, DPP IV involved in IP-10 regulation...
2017: PloS One
https://www.readbyqxmd.com/read/28373861/environmental-issues-in-thyroid-diseases
#4
REVIEW
Silvia Martina Ferrari, Poupak Fallahi, Alessandro Antonelli, Salvatore Benvenga
Environmental factors are determinant for the appearance of autoimmune thyroid diseases (AITD) in susceptible subjects. Increased iodine intake, selenium, and vitamin D deficiency, exposure to radiation, from nuclear fallout or due to medical radiation, are environmental factors increasing AITD. Cigarette smoking is associated with Graves' disease and Graves' ophthalmopathy, while it decreases the risk of hypothyroidism and thyroid autoimmunity. Viral infections are important environmental factors in the pathogenesis of AITD, too, particularly human parvovirus B19 (EVB19) and hepatitis C virus...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28321328/effect-of-season-and-sunlight-on-viral-kinetics-during-hepatitis-c-virus-therapy
#5
Noemi Hernández-Alvarez, Juan Manuel Pascasio Acevedo, Enrique Quintero, Inmaculada Fernández Vázquez, María García-Eliz, Juan de la Revilla Negro, Javier Crespo García, Manuel Hernández-Guerra
BACKGROUND AND AIMS: Rapid viral response (RVR) during antiviral treatment for hepatitis C virus (HCV) predicts sustained viral response (SVR). Recently, vitamin D levels have been associated with SVR. As sunlight is the most important source of vitamin D and shows seasonal variation, we evaluated the effect of season on viral kinetics during peginterferon/ribavirin-based therapy for HCV. METHODS: Consecutive HCV patients treated with peginterferon/ribavirin and boceprevir/ telaprevir (June 2011-July 2014) were included...
2017: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/28261385/influence-of-vitamin-d-on-liver-fibrosis-in-chronic-hepatitis-c-a-systematic-review-and-meta-analysis-of-the-pooled-clinical-trials-data
#6
Alia S Dadabhai, Behnam Saberi, Katie Lobner, Russell T Shinohara, Gerard E Mullin
AIM: To investigate the relationship between vitamin D and liver fibrosis in hepatitis C-monoinfected or hepatitis C virus (HCV)-human immunodeficiency virus (HIV) co-infected patients. METHODS: Pertinent studies were located by a library literature search in PubMed/Embase/Cochrane/Scopus/LILACS by two individual reviewers. Inclusion criteria: (1) studies with patients with HCV or co-infected HCV/HIV; (2) studies with patients ≥ 18 years old; (3) studies that evaluated liver fibrosis stage, only based on liver biopsy; and (4) studies that reported serum or plasma 25(OH)D levels...
February 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28225575/25-hydroxy-vitamin-d-suppresses-hepatitis-c-virus-replication-and-contributes-to-rapid-virological-response-of-treatment-efficacy
#7
Jee-Fu Huang, Yu-Min Ko, Chung-Feng Huang, Ming-Lun Yeh, Chia-Yen Dai, Meng-Hsuan Hsieh, Ching-I Huang, Hua-Ling Yang, Shu-Chi Wang, Zu-Yau Lin, Shinn-Chern Chen, Ming-Lung Yu, Wan-Long Chuang
AIM: 25-hydroxy vitamin D (Vit D) plays a role in treatment outcomes in chronic hepatitis C virus (HCV) infection (CHC). We aimed to clarify HCV replication is inhibited by Vit D in HCV replicon cells. Clinical implication was assessed for rapid virological response (RVR) and sustained virological response (SVR) among those patients receiving anti-viral therapy. METHODS: Cell survival and viral loads were observed in Con1 (genotype-1b) and J6/JFH (genotype-2a) cells treated with different doses of Vit D...
February 22, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28139365/vitamin%C3%A2-a-in-pediatrics-an-update-from-the-nutrition-committee-of-the-french-society-of-pediatrics
#8
M Vidailhet, D Rieu, F Feillet, A Bocquet, J-P Chouraqui, D Darmaun, C Dupont, M-L Frelut, J-P Girardet, R Hankard, J-C Rozé, U Siméoni, D Turck, A Briend
Vitamin A (retinol) fulfills multiple functions in vision, cell growth and differentiation, embryogenesis, the maintenance of epithelial barriers and immunity. A large number of enzymes, binding proteins and receptors facilitate its intestinal absorption, hepatic storage, secretion, and distribution to target cells. In addition to the preformed retinol of animal origin, some fruits and vegetables are rich in carotenoids with provitamin A precursors such as β-carotene: 6μg of β-carotene corresponds to 1μg retinol equivalent (RE)...
January 27, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28122934/riboflavin-deficiency-in-rats-decreases-de-novo-formate-production-but-does-not-affect-plasma-formate-concentration
#9
Luke MacMillan, Simon G Lamarre, Robin P daSilva, René L Jacobs, Margaret E Brosnan, John T Brosnan
BACKGROUND: The one-carbon metabolism pathway is highly dependent on a number of B vitamins in order to provide one-carbon units for purine and thymidylate biosynthesis as well as homocysteine remethylation. Previous studies have examined folate and vitamin B-12 deficiency and their effects on formate metabolism; as of yet, to our knowledge, no studies on the effects of riboflavin deficiency on formate metabolism have been published. OBJECTIVE: Our objective was to determine the effects of riboflavin deficiency on formate metabolism...
January 25, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28079241/is-there-an-association-between-vitamin-d-and-liver-fibrosis-in-patients-with-chronic-hepatitis-c
#10
Kalinca da Silva Oliveira, Caroline Buss, Cristiane Valle Tovo
BACKGROUND: - Vitamin D is known for its immunomodulatory, anti-inflammatory and antifibrotic properties, which are quite relevant in the pathogenesis and treatment of many causes of chronic liver disease. OBJECTIVE: - This study aimed to evaluate the association between serum vitamin D levels and the histopathological findings in patients with chronic hepatitis C virus infection. METHODS: - Cross-sectional study composed of patients with chronic hepatitis C...
January 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28062356/cyp4f2-repression-and-a-modified-alpha-tocopherol-vitamin-e-metabolism-are-two-independent-consequences-of-ethanol-toxicity-in-human-hepatocytes
#11
A Russo, D Bartolini, P Torquato, D Giusepponi, C Barola, R Galarini, M Birringer, S Lorkowski, F Galli
The expression of CYP4F2, a form of cytochrome P-450 with proposed role in α-tocopherol and long-chain fatty acid metabolism, was explored in HepG2 and HepaRG human hepatocytes during ethanol toxicity. Cytotoxicity, ROS production, and JNK and ERK1/2 kinase signaling increased in a dose and time-dependent manner during ethanol treatments; CYP4F2 gene expression decreased, while other CYP4F forms, namely 4F11 and 12, increased along with 3A4 and 2E1 isoforms. α-Tocopherol antagonized the cytotoxicity and CYP4F2 gene repression effect of ethanol in HepG2 cells...
January 3, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/27888359/low-25-oh-vitamin%C3%A2-d-levels-reflect-hepatic-dysfunction-and-are-associated-with-mortality-in-patients-with-liver-cirrhosis
#12
Rafael Paternostro, Doris Wagner, Thomas Reiberger, Mattias Mandorfer, Remy Schwarzer, Monika Ferlitsch, Michael Trauner, Markus Peck-Radosavljevic, Arnulf Ferlitsch
BACKGROUND AND AIMS: Vitamin D deficiency is frequent in patients with cirrhosis. The aims of this study were to evaluate the relation of vitamin D status to portal hypertension, degree of liver dysfunction and survival. METHODS: Patients with cirrhosis who have been tested for 25-OH-vitamin D levels were retrospectively included. Vitamin D deficiency was defined as 25-OH-vitamin D levels <10 ng/ml. Child-Pugh score, model for end-stage liver disease (MELD) and available hepatic venous pressure gradient (HVPG) were recorded...
January 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27863206/assessment-of-3-epi-25-hydroxyvitamin-d-levels-during-cholecalciferol-supplementation-in-adults-with-chronic-liver-diseases
#13
Caroline S Stokes, Dietrich A Volmer
Recently, hepatic immaturity was cited as a possible reason for high levels of the C-3 epimer of 25-hydroxyvitamin (25(OH)D) in premature infants: however what role, if any, the liver plays in controlling epimer concentrations is unknown. This study assesses 3-epi-25-hydroxyvitamin D (3-epi-25(OH)D) levels during the course of cholecalciferol supplementation in adults with chronic liver diseases (CLD). Vitamin D metabolites were analyzed in 65 CLD patients with 25(OH)D <30 ng/mL who received 20 000 IU cholecalciferol/week for 6 months...
December 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27853723/evaluation-of-the-protective-role-of-vitamin-c-on-the-metabolic-and-enzymatic-activities-of-the-liver-in-the-male-rats-after-exposure-to-2-45-ghz-of-wi-fi-routers
#14
F Shekoohi-Shooli, S M J Mortazavi, M B Shojaei-Fard, S Nematollahi, M Tayebi
BACKGROUND: The use of devices emitted microwave radiation such as mobile phones, wireless fidelity (Wi-Fi) routers, etc. is increased rapidly. It has caused a great concern; the researchers should identify its effects on people's health. We evaluated the protective role of Vitamin C on the metabolic and enzymatic activities of the liver after exposure to Wi-Fi routers. MATERIAL AND METHODS: 70 male Wistar rats weighing 200-250 g were randomly divided into 7 groups (10 rats in each group)...
September 2016: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/27813318/bleeding-and-liver-transplantation-outcomes-in-haemophilia
#15
K D Mehta, M V Ragni
BACKGROUND: Hepatitis C is the major cause of end-stage liver disease and the major indication for orthotopic liver transplantation (OLTx) in individuals with haemophilia. AIM: To assess the epidemiology and outcomes of OLTx in U.S. haemophilia patients. METHODS: We investigated haemophilia liver transplant recipients between 1993 and 2012, using the Nationwide Inpatient Sample, identified by ICD9 code 50.59. RESULTS: Of the 11 267 (weighted n = 54 691) patients undergoing OLTx, 44 (0...
March 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27806685/prepartum-body-condition-score-and-plane-of-nutrition-affect-the-hepatic-transcriptome-during-the-transition-period-in-grazing-dairy-cows
#16
M Vailati-Riboni, S Meier, C R Burke, J K Kay, M D Mitchell, C G Walker, M A Crookenden, A Heiser, S L Rodriguez-Zas, J R Roche, J J Loor
BACKGROUND: A transcriptomic approach was used to evaluate potential interactions between prepartum body condition score (BCS) and feeding management in the weeks before calving on hepatic metabolism during the periparturient period. METHODS: Thirty-two mid-lactation grazing dairy cows of mixed age and breed were randomly allocated to one of four treatment groups in a 2 × 2 factorial arrangement: two prepartum BCS categories [4.0 (thin, BCS4) and 5.0 (optimal, BCS5); based on a 10-point scale], and two levels of energy intake during the 3 weeks preceding calving (75 and 125 % of estimated requirements)...
November 2, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27787390/high-25-hydroxyvitamin-d-is-associated-with-unexpectedly-high-plasma-inflammatory-markers-in-hiv-patients-on-antiretroviral-therapy
#17
Louie Mar A Gangcuangco, Lindsay B Kohorn, Dominic C Chow, Sheila M Keating, Philip J Norris, Lorna S Nagamine, Lishomwa C Ndhlovu, Scott A Souza, Kalpana J Kallianpur, Cecilia M Shikuma
Inflammation associated with low 25-hydroxyvitamin D (25(OH)D) is associated with increased morbidity and mortality among HIV-infected patients with vitamin D deficiency. We investigated the association between 25(OH)D and soluble biomarkers among HIV-infected patients on stable antiretroviral therapy. This is a cross-sectional study. This study focuses on assessment in subjects 40 years or older on stable antiretroviral therapy (ART) for >3 months. Chemiluminescent immunoassay was used to determine plasma 25(OH)D levels...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27696253/vitamin-d-and-gallstone-disease-a-population-based-study
#18
Daniel Mønsted Shabanzadeh, Torben Jørgensen, Allan Linneberg, Lars Tue Sørensen, Tea Skaaby
Gallstone disease is highly prevalent in the general population and is a major gastrointestinal cause of hospital admissions. The objectives were to determine whether circulating levels of 25-hydroxyvitamin D were associated to ultrasound proven gallstones or cholecystectomy in a general population sample. Determinants of vitamin D status were also explored. A random sample of 4130 people from the population of Copenhagen with ages 41-71 years were invited (N = 4130) and 2650 participants were included...
December 2016: Endocrine
https://www.readbyqxmd.com/read/27694737/relationships-between-low-serum-vitamin-d-levels-and-hbv-a-determinant-mutations-in-chronic-hepatitis-b-patients
#19
Huijuan Zhu, Xingxiang Liu, Yi Ding, Hui Zhou, Yiying Wang, Zhiwei Zhou, Xinxin Li, Zengli Zhang, Chen Dong
INTRODUCTION: Vitamin D is significantly associated with virus replication in chronic hepatitis B virus (HBV) infection. However, the relationship between low serum vitamin D levels and HBV "a" determinant mutations remains unknown. METHODOLOGY: A total of 133 chronically HBV-infected, treatment-naive patients were randomly selected in the present study. Serum vitamin D levels were measured by using liquid chromatography-mass spectrometry. The HBV "a" determinant was amplified, sequenced, and analyzed by nested polymerase chain reaction (PCR)...
September 30, 2016: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/27659316/association-of-vitamin-d-deficiency-with-hepatitis-b-virus-related-liver-diseases
#20
Nghiem Xuan Hoan, Nguyen Khuyen, Mai Thanh Binh, Dao Phuong Giang, Hoang Van Tong, Phan Quoc Hoan, Ngo Tat Trung, Do Tuan Anh, Nguyen Linh Toan, Christian G Meyer, Peter G Kremsner, Thirumalaisamy P Velavan, Le Huu Song
BACKGROUND: As an immune modulator, vitamin D is involved in various pathophysiological mechanisms in a plethora of diseases. This study aims to correlate the vitamin D deficiency status and clinical progression of liver diseases associated with hepatitis B virus (HBV) infection in patients in Vietnam and to compare it to healthy controls. METHODS: We quantified the levels of total vitamin D [25-(OH) D2 and D3] in serum samples from 400 HBV patients (chronic hepatitis B infection [CHB], n = 165; HBV-associated liver cirrhosis [LC], n = 127; HBV-associated hepatocellular carcinoma [HCC], n = 108) and 122 unrelated healthy controls (HC)...
September 23, 2016: BMC Infectious Diseases
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