Time filter

Source Type

Doudier B.,Service de Medecine Interne | Verrot D.,Service de Medecine Interne | Serratrice C.,Service de Medecine Interne | Poucel C.,Service de Medecine Interne | And 3 more authors.
Journal of Clinical Microbiology | Year: 2015

We describe a case of fatal fulminant hepatitis E concomitant to malignant B cell lymphoma in a 73-year-old French woman. Infection was with an autochthonous hepatitis E virus of genotype 3f. Frequent consumption of uncooked pig liver sausage (figatellu) was the only risk factor found. Copyright © 2015, American Society for Microbiology. All Rights Reserved.

Khalil J.Y.B.,Aix - Marseille University | Andreani J.,Aix - Marseille University | La Scola B.,Aix - Marseille University | La Scola B.,Center Hospitalo University Timone
Current Opinion in Microbiology | Year: 2016

Almost fifteen years ago, the discovery of Acanthamoeba polyphaga mimivirus, the first giant virus, changed how we define a virus. It was discovered incidentally in a process of isolating Legionella sp. from environmental samples in the context of pneumonia epidemics using a co-culture system with Acanthamoeba. Since then, much effort and improvement has been put into the original technique. In addition to the known families of Mimiviridae and Marseilleviridae, four new proposed families of giant viruses have been isolated: Pandoravirus, Pithovirus, Faustovirus and Mollivirus. Major improvements were based on enrichment systems, targeted use of antibiotics and high-throughput methods. The most recent development, using flow cytometry for isolation and presumptive identification systems, opens a path to large environmental surveys that may discover new giant virus families in new protozoa supports used for culture support. © 2016 Elsevier Ltd.

Colson P.,Center Hospitalo University Timone | Colson P.,Aix - Marseille University | Gayet S.,Center Hospitalo University Sainte Marguerite | Gerolami R.,Center Hospitalo University Conception
Antiviral Therapy | Year: 2011

HCV displays considerable levels of nucleotide and amino acid diversity. Recently, the relevance of natural polymorphisms in worldwide isolates has been addressed in view of future protease inhibitor (PI)-based treatments; geno-type-and subtype-specific natural polymorphisms within HCV NS3 protease were identified at amino acid sites associated either with resistance to PIs or with compensatory mutations. Here, we describe a case of chronic infection with HCV of genotype 3 subtype h (HCV-3h), formerly only described from three patients originating from Somalia, and we provide the first NS3 protease sequence for such strains. NS3 protease sequences of HCV-3h recovered in the present study harbour specific amino acid residues not encountered in other reference HCV genotypes and sub-types at nine of the 181 NS3 protease positions; none of these amino acids are known to confer resistance to PIs. Of note, 5′ untranslated region sequence-based genotyping classifies them into genotype 1. ©2011 International Medical Press.

Rossi-Tamisier M.,Center Hospitalo University Timone | Gerolami R.,Center Hospitalo University Conception | Colson P.,Center Hospitalo University Timone | Colson P.,Aix - Marseille University
Journal of Clinical Virology | Year: 2013

Background: Hepatitis E virus (HEV) is an emerging clinical threat in Europe among kidney and liver-transplant recipients. The incidence and prevalence of HEV infection in this special population are poorly known. False-negative results have been observed for anti-HEV IgG detection in severely immunocompromized persons. Moreover, large discrepancies have been reported between rates of anti-HEV IgG detection in blood donors and hepatitis E cases. Objectives: To compare anti-HEV IgG and IgM prevalence using two different commercial microplate enzyme-immuno assays (MEIAs) (Adaltis and Wantai) in 64 kidney-/liver-transplant recipients. Study design: Serum samples tested in our routine clinical practice over the 12/2009-12/2011 period with Adaltis MEIAs were retrospectively tested using Wantai MEIAs. IgG-positive sera were further tested by an immunoblot while those found IgM-positive were further tested with an immunochromatography rapid test and for the presence of HEV RNA. Results: Positive results on anti-HEV IgG testing were obtained for seven (10.9%) compared to 20 (31.3%) serum samples with Adaltis and Wantai assays, respectively (p= 0.005). Then, 6/7 (86%) of the serum samples positive with Adaltis and 16/20 (80%) of those positive with Wantai were positive with the immunoblot. One patient with chronic HEV infection was IgG-negative with both MEIAs. Regarding anti-HEV IgM, Adaltis and Wantai assays were concordant for 97% of the serum samples, prevalence being 8% with both MEIAs. Conclusions: The accuracy of currently available commercial or in-house anti-HEV IgG MEIAs should be tested comparatively on a panel of serum samples collected from solid organ-transplant recipients, including some who experienced PCR-documented HEV infection. © 2012 Elsevier B.V.

Motte A.,Center Hospitalo University Timone | Roquelaure B.,Center Hospitalo University Timone | Galambrun C.,Center Hospitalo University Timone | Bernard F.,Center Hospitalo University Timone | And 3 more authors.
Journal of Clinical Virology | Year: 2012

Hepatitis E virus (HEV) causes an emerging autochthonous disease in developed countries where links with a viral porcine reservoir have been evidenced. Moreover, chronic HEV infection and associated-cirrhosis have been described in severely immunocompromized patients. Nonetheless, only few studies have focused on pediatric HEV infections worldwide and only four autochthonous cases have been reported in children in developed countries. We describe here acute hepatitis E in three immunocompromized children. Case no. 1 was a 9-year-old liver transplant recipient girl in whom H1N1 2009 flu infection was diagnosed concurrently with hepatitis E. Case no. 2 was a 12-year-old boy presenting early medullar relapse of lymphoblastic leukemia of type B and in whom HEV RNA was detected over a 29-week period. Case no. 3 was a 9-year-old boy with a rare primary immunodeficiency due to XIAP deficiency. HEV infections were all autochthonously acquired and involved different viruses classified as subtype f, c, and e of genotype 3, which are those described in autochthonous cases in Europe. These three observations prompt to consider HEV as a causative agent of hepatitis in children in developed countries, and to perform particularly HEV testing in those severely immunocompromized who may develop chronic hepatitis E. © 2011 Elsevier B.V.

Discover hidden collaborations