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Association between vitamin D and hepatitis C virus infection: A meta-analysis

World Journal of Gastroenterology 2013年第35期19卷 5917-5924页

作者： Livia Melo Villar José Antonio Del Campo isidora ranchal Elisabeth Lampe Manuel Romero-Gomez Laboratory of Viral Hepatitis Oswaldo Cruz Institute Fiocruz Rio de Janeiro RJ 210360-040 Brazil Unit for the Clinical Management of Digestive Diseases and CIBERehd Hospital Universitario de Valme41014 SevillaSpain

AIM:To evaluate the association between 25-hydroxyvitamin D[25(OH)D]and sustained virological response(SVR)in hepatitis C virus(HCV)infected individuals.METHODS:Relevant studies were identified by systematically searching MEDLINE databases up to March2012 and abstracts of the European and American Congress of Hepatology conducted in 2011.Studies must provide information on SVR and the levels of 25(OH)D3and/or 25(OH)D2[henceforth referred to as 25(OH)D]in sera samples from HCV infected individuals.The inclusion criteria were:clinical studies that included HCV infected patients aged older than 18 years regardless of HCV genotype or ethnic group;provided information on SVR rates;and were reported in the English languageas full papers.Due to the heterogeneity of studies in categorizing serum vitamin D levels,a cut-off value of30 ng/mL of serum 25(OH)D was used.Heterogeneity was assessed using I2statistics.The summary odds ratios with their corresponding 95%CI were calculated based on a random-effects model.RESULTS:Overall,11 studies(8 observational and 3interventional)involving 1575 individuals were included and 1117 HCV infected individuals(71%)showed low vitamin D levels.Most of the studies included monoinfected HCV individuals with the mean age ranging from 38 to 56 years.Four studies were conducted in human immunodeficiency virus/HCV infected individuals.Regarding vitamin D measurement,most of the studies employed radioimmunoassays(n=5)followed by chemiluminescence(n=4)and just one study employed high performance/pressure liquid chromatography(HPLC).Basal vitamin D levels varied from 17 to43 ng/mL in the studies selected,and most of the HCV infected individuals had genotype 1(1068/1575)with mean viral load varying from log 4.5-5.9 UI/mL.With regard to HCV treatment,most of the studies(n=8)included HCV individuals without previous treatment,where the pooled SVR rate was 46.4%.High rates of SVR were observed in HCV individuals with vitamin D levels above 30 ng/mL(OR=1.57;95%CI:1.12-2.2)and those supplemented with v

关键词： Vitamin D Hepatitis C Therapy Metaanalysis Sustained virological response

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