69 research outputs found

    Myopericarditis complicated by pulmonary embolism in an immunocompetent patient with acute cytomegalovirus infection: a case report

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    Background Primary acute cytomegalovirus infection in immunocompetent patients is common worldwide. Infection is most often asymptomatic or occurs sub-clinically with a self-limited mononucleosis-like syndrome. More rarely, the infection may lead to severe organ complications with pneumonia, myocarditis, pericarditis, colitis and hemolytic anemia. Recent cases of cytomegalovirus-associated thrombosis have also been reported sporadically in the medical literature. Case presentation We report here a case of simultaneous myopericarditis and pulmonary embolism in a 30-year-old man with no medical history. The patient was not immunocompromised. We discuss the possible role of acute cytomegalovirus infection in the induction of vascular damage and review relevant cases in the literature. Conclusion Thrombosis in patients with acute cytomegalovirus infection may be more frequent than is generally thought. Physicians need to be aware of the possible association between acute cytomegalovirus and thrombosis in immunocompetent patients, especially in the presence of severe systemic infection, as our case illustrates

    Successful Treatment Using Simeprevir, Sofosbuvir and Rituximab of a Severe Form of Hepatitis C Virus-related Mixed Cryoglobulinemia with Cardiac Involvement

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    Numerous extrahepatic manifestations have been reported in hepatitis C virus (HCV) infection, particularly mixed cryoglobulinemia (MC). MC generally responds to clearance of HCV under pegylated-interferon plus ribavirin treatment. New direct-acting antiviral agents have been licensed for HCV under different combinations but have not been studied in severe forms of MC. Here, we present a case report describing a life-threatening form of MC with multivisceral involvement, which was successfully treated with concomitant rituximab, sofosbuvir and simeprevir. In light of the rapid clinical remission associated with sustained virological response and the excellent side-effect profile, this treatment should be considered as a first-line therapy in severe forms of MC

    COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study

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    Background: The ISARIC prospective multinational observational study is the largest cohort of hospitalized patients with COVID-19. We present relationships of age, sex, and nationality to presenting symptoms. Methods: International, prospective observational study of 60 109 hospitalized symptomatic patients with laboratory-confirmed COVID-19 recruited from 43 countries between 30 January and 3 August 2020. Logistic regression was performed to evaluate relationships of age and sex to published COVID-19 case definitions and the most commonly reported symptoms. Results: ‘Typical’ symptoms of fever (69%), cough (68%) and shortness of breath (66%) were the most commonly reported. 92% of patients experienced at least one of these. Prevalence of typical symptoms was greatest in 30- to 60-year-olds (respectively 80, 79, 69%; at least one 95%). They were reported less frequently in children (≀ 18 years: 69, 48, 23; 85%), older adults (≄ 70 years: 61, 62, 65; 90%), and women (66, 66, 64; 90%; vs. men 71, 70, 67; 93%, each P < 0.001). The most common atypical presentations under 60 years of age were nausea and vomiting and abdominal pain, and over 60 years was confusion. Regression models showed significant differences in symptoms with sex, age and country. Interpretation: This international collaboration has allowed us to report reliable symptom data from the largest cohort of patients admitted to hospital with COVID-19. Adults over 60 and children admitted to hospital with COVID-19 are less likely to present with typical symptoms. Nausea and vomiting are common atypical presentations under 30 years. Confusion is a frequent atypical presentation of COVID-19 in adults over 60 years. Women are less likely to experience typical symptoms than men

    Epidémiologie moléculaire du virus de l'hépatite B chez 1276 femmes enceintes au Cameroun

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    POITIERS-BU MĂ©decine pharmacie (861942103) / SudocSudocFranceF

    Le test HPV urinaire proposé comme alternative au frottis cervico-utérin (étude pilote dans le département du Maine et Loire)

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    Objectif : Actuellement en France, le dĂ©pistage du cancer du col de l'utĂ©rus repose sur l'examen cytologique d'un frottis cervico-utĂ©rin (FCU) chez les femmes ĂągĂ©es de 25 Ă  65 ans. Malheureusement, le taux de couverture du frottis est insuffisant. Dans le but d'augmenter la couverture de ce dĂ©pistage, nous avons menĂ© une Ă©tude pilote dans le dĂ©partement du Maine et Loire dont l'objectif Ă©tait de mesurer l'adhĂ©sion des femmes Ă  un test HPV urinaire par rapport au frottis cervico-utĂ©rin. MĂ©thodes : 5000 courriers proposant de faire un prĂ©lĂšvement urinaire pour Ă©valuer une nouvelle mĂ©thode de dĂ©pistage du cancer du col ont Ă©tĂ© envoyĂ©s Ă  des femmes de 40 Ă  65 ans rĂ©fractaires au FCU. Le prĂ©lĂšvement Ă©tait analysĂ© par une technique de PCR en temps rĂ©el (PCR TR) commercialisĂ©e par les laboratoires Abbott (Abbott Real Time High Risk HPV). Cette technique permet la dĂ©tection des HPV de gĂ©notypes 16, 18 et de 12 autres HPV oncogĂšnes (HPV HR). RĂ©sultats : 678 prĂ©lĂšvements ont Ă©tĂ© analysĂ©s. Parmi eux, 29 Ă©taient positifs pour un HPV HR. Les FCU, rĂ©alisĂ©s chez toutes les femmes dont le test HPV Ă©tait positif, ont rĂ©vĂ©lĂ© la prĂ©sence de 3 HSIL dont deux lĂ©sions stade CIN3 confirmĂ©es. Conclusion : Notre Ă©tude montre l'adhĂ©sion plus facile au test HPV urinaire pour les femmes qui refusaient le FCU. Nous avons pu dĂ©pister des lĂ©sions cervicales de haut grade chez ces femmes qui n'Ă©taient pas suivies rĂ©guliĂšrement. Le test HPV urinaire pourrait ĂȘtre une alternative au dĂ©pistage classique par frottis ce qui permettrait d'Ă©tendre la couverture du dĂ©pistage du cancer du col en France.NANTES-BU MĂ©decine pharmacie (441092101) / SudocSudocFranceF

    ADN polymérase du cytomégalovirus humain (activité enzymatique et sensibilité aux entiviraux)

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    Le foscarnet, utilisé pour traiter les infections sévÚres à cytomégalovirus, est un inhibiteur de l'ADN polymérase, codé par le gÚne UL54. Le but du travail était d'étudier le retentissement de mutations introduites dans UL54 sur l'activité de l'enzyme et la résistance au foscarnet. Une méthode originale, reposant sur la mesure de l'incorporation de nucléotides trisphosphates marqués à la digoxigénénine dans le brin d'ADN en formation, a été mise au point pour mesurer l'activité d'ADN polymérases sauvages et mutées, et leur comportement en présence de foscarnet. L 'implication de l'extrémité N-terminale du domaine conservé delta-C dans le mode d'action du foscarnet a été démontrée pour la premiÚre fois. Le rÎle d'association de mutations a été confirmé. L'étude des phénotypes de polymérases portant des mutations dans le domaine IV a permis de préciser leur rÎle dans la fonction exonucléasique de l'enzyme viralePARIS5-BU-Necker : Fermée (751152101) / SudocPARIS-BIUP (751062107) / SudocSudocFranceF

    A Pleiotropic Role of the Hepatitis B Virus Core Protein in Hepatocarcinogenesis

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    International audienceChronic hepatitis B virus (HBV) infection is one of the most common factors associated with hepatocellular carcinoma (HCC), which is the sixth most prevalent cancer among all cancers worldwide. However, the pathogenesis of HBV-mediated hepatocarcinogenesis is unclear. Evidence currently available suggests that the HBV core protein (HBc) plays a potential role in the development of HCC, such as the HBV X protein. The core protein, which is the structural component of the viral nucleocapsid, contributes to almost every stage of the HBV life cycle and occupies diverse roles in HBV replication and pathogenesis. Recent studies have shown that HBc was able to disrupt various pathways involved in liver carcinogenesis: the signaling pathways implicated in migration and proliferation of hepatoma cells, apoptosis pathways, and cell metabolic pathways inducing the development of HCC; and the immune system, through the expression and production of proinflammatory cytokines. In addition, HBc can modulate normal functions of hepatocytes through disrupting human host gene expression by binding to promoter regions. This HBV protein also promotes HCC metastasis through epigenetic alterations, such as micro-RNA. This review focuses on the molecular pathogenesis of the HBc protein in HBV-induced HCC
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