74 research outputs found

    Pasteur and the veterinarians

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    Identification of Papillomaviruses in Butchers' Warts

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    We have studied the papillomaviruses found in the hand warts of 60 butchers, most of them from 2 distant slaughtershouses. Warts differing in morphology and location were studied separately. The viruses were identified by molecular hybridization, restriction enzyme analysis and immunoflurescence. Four known human papillomaviruses (HPV-1, HPV-2, HPV-3, HPV-4) were detected and one hitherto unknown papillomavirus was identified in 9 butchers. The DNA of the latter virus did not anneal with any of the RNAs complementary to either HPV-1 to HPV-5 or bovine papillomavirus type 1 (BPV-1) DNAs, and showed a Hind II+III restriction enzyme cleavage pattern distinct from those of known HPVs and BPVs. This virus showed distinct antigenic properties, as shown by immunofluorescence, using HPV-1, -2, -3, -5, and BVP-1 antisera. It may represent a new type of human papillomarvirus(HPV-7) or a yet unidentified animal papillomavirus. In addition, 6 butchers were found to be infected with a papillomavirus, distinct from the known skin HPVs and from BPV-1, which could not be characterized by restriction enzyme analysis. Eleven butchers were found to be infected by 2 viruses.A characteristic histological pattern was found to be associated with the different papillomaviruses

    Evidence for a Nonallelic Heterogeneity of Epidermodysplasia Verruciformis with Two Susceptibility Loci Mapped to Chromosome Regions 2p21–p24 and 17q25

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    Epidermodysplasia verruciformis is a rare genodermatosis associated with a high risk of skin cancer. This condition is characterized by an abnormal susceptibility to specific related human papillomavirus genotypes, including the oncogenic HPV5. Epidermodysplasia verruciformis is usually considered as an autosomal recessive disease. We recently mapped a susceptibility locus for epidermodysplasia verruciformis (EV1) to chromosome 17qter within the 1 cM interval between markers D17S939 and D17S802. We report here the genotyping for 10 microsatellite markers spanning 29 cM around EV1 in two consanguineous epidermodysplasia verruciformis families from Colombia (C2) and France (F1) comprising five patients and two patients, respectively. Using homozygosity mapping, linkage with 17qter markers was observed for family C2 only. Multipoint linkage analysis yielded maximum multipoint LOD-score values above 10 between markers D17S1839 and D17S802 encompassing the EV1 locus. A genome-wide search performed in family F1 yielded evidence for linkage between epidermodysplasia verruciformis and the chromosomal 2p marker D2S365. Nine additional microsatellite markers spanning 15 cM in this region were analyzed. Assuming an autosomal recessive inheritance with a complete penetrance, the expected maximum two-point LOD-score value of 1.8 was obtained for three markers and multipoint linkage analysis yielded a maximum LOD-score value of 3.51 between markers D2S2144 and D2S392. Haplotype analysis allowed to map a candidate region for a second epidermodysplasia verruciformis susceptibility locus (EV2) within the 8 cM interval between markers D2S171 and D2S2347 of the 2p21–p24 region. In contrast, linkage with 2p markers was excluded for family C2 and for the three families in which we mapped EV1 previously. The disclosure of two susceptibility loci for epidermodysplasia verruciformis provides evidence for a nonallelic heterogeneity in this disease

    Circulating microRNAs in sera correlate with soluble biomarkers of immune activation but do not predict mortality in ART treated individuals with HIV-1 infection: A case control study

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    Introduction: The use of anti-retroviral therapy (ART) has dramatically reduced HIV-1 associated morbidity and mortality. However, HIV-1 infected individuals have increased rates of morbidity and mortality compared to the non-HIV-1 infected population and this appears to be related to end-organ diseases collectively referred to as Serious Non-AIDS Events (SNAEs). Circulating miRNAs are reported as promising biomarkers for a number of human disease conditions including those that constitute SNAEs. Our study sought to investigate the potential of selected miRNAs in predicting mortality in HIV-1 infected ART treated individuals. Materials and Methods: A set of miRNAs was chosen based on published associations with human disease conditions that constitute SNAEs. This case: control study compared 126 cases (individuals who died whilst on therapy), and 247 matched controls (individuals who remained alive). Cases and controls were ART treated participants of two pivotal HIV-1 trials. The relative abundance of each miRNA in serum was measured, by RTqPCR. Associations with mortality (all-cause, cardiovascular and malignancy) were assessed by logistic regression analysis. Correlations between miRNAs and CD4+ T cell count, hs-CRP, IL-6 and D-dimer were also assessed. Results: None of the selected miRNAs was associated with all-cause, cardiovascular or malignancy mortality. The levels of three miRNAs (miRs -21, -122 and -200a) correlated with IL-6 while miR-21 also correlated with D-dimer. Additionally, the abundance of miRs -31, -150 and -223, correlated with baseline CD4+ T cell count while the same three miRNAs plus miR- 145 correlated with nadir CD4+ T cell count. Discussion: No associations with mortality were found with any circulating miRNA studied. These results cast doubt onto the effectiveness of circulating miRNA as early predictors of mortality or the major underlying diseases that contribute to mortality in participants treated for HIV-1 infection

    Development and Validation of a Risk Score for Chronic Kidney Disease in HIV Infection Using Prospective Cohort Data from the D:A:D Study

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    Ristola M. on työryhmien DAD Study Grp ; Royal Free Hosp Clin Cohort ; INSIGHT Study Grp ; SMART Study Grp ; ESPRIT Study Grp jäsen.Background Chronic kidney disease (CKD) is a major health issue for HIV-positive individuals, associated with increased morbidity and mortality. Development and implementation of a risk score model for CKD would allow comparison of the risks and benefits of adding potentially nephrotoxic antiretrovirals to a treatment regimen and would identify those at greatest risk of CKD. The aims of this study were to develop a simple, externally validated, and widely applicable long-term risk score model for CKD in HIV-positive individuals that can guide decision making in clinical practice. Methods and Findings A total of 17,954 HIV-positive individuals from the Data Collection on Adverse Events of Anti-HIV Drugs (D:A:D) study with >= 3 estimated glomerular filtration rate (eGFR) values after 1 January 2004 were included. Baseline was defined as the first eGFR > 60 ml/min/1.73 m2 after 1 January 2004; individuals with exposure to tenofovir, atazanavir, atazanavir/ritonavir, lopinavir/ritonavir, other boosted protease inhibitors before baseline were excluded. CKD was defined as confirmed (>3 mo apart) eGFR In the D:A:D study, 641 individuals developed CKD during 103,185 person-years of follow-up (PYFU; incidence 6.2/1,000 PYFU, 95% CI 5.7-6.7; median follow-up 6.1 y, range 0.3-9.1 y). Older age, intravenous drug use, hepatitis C coinfection, lower baseline eGFR, female gender, lower CD4 count nadir, hypertension, diabetes, and cardiovascular disease (CVD) predicted CKD. The adjusted incidence rate ratios of these nine categorical variables were scaled and summed to create the risk score. The median risk score at baseline was -2 (interquartile range -4 to 2). There was a 1: 393 chance of developing CKD in the next 5 y in the low risk group (risk score = 5, 505 events), respectively. Number needed to harm (NNTH) at 5 y when starting unboosted atazanavir or lopinavir/ritonavir among those with a low risk score was 1,702 (95% CI 1,166-3,367); NNTH was 202 (95% CI 159-278) and 21 (95% CI 19-23), respectively, for those with a medium and high risk score. NNTH was 739 (95% CI 506-1462), 88 (95% CI 69-121), and 9 (95% CI 8-10) for those with a low, medium, and high risk score, respectively, starting tenofovir, atazanavir/ritonavir, or another boosted protease inhibitor. The Royal Free Hospital Clinic Cohort included 2,548 individuals, of whom 94 individuals developed CKD (3.7%) during 18,376 PYFU (median follow-up 7.4 y, range 0.3-12.7 y). Of 2,013 individuals included from the SMART/ESPRIT control arms, 32 individuals developed CKD (1.6%) during 8,452 PYFU (median follow-up 4.1 y, range 0.6-8.1 y). External validation showed that the risk score predicted well in these cohorts. Limitations of this study included limited data on race and no information on proteinuria. Conclusions Both traditional and HIV-related risk factors were predictive of CKD. These factors were used to develop a risk score for CKD in HIV infection, externally validated, that has direct clinical relevance for patients and clinicians to weigh the benefits of certain antiretrovirals against the risk of CKD and to identify those at greatest risk of CKD.Peer reviewe

    Emerging zoonoses and pathogens of public health concern. In : Revue scientifique et technique de l’Office international des Epizooties Vol. 23 (2), 2004

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    Orth Gérard. Emerging zoonoses and pathogens of public health concern. In : Revue scientifique et technique de l’Office international des Epizooties Vol. 23 (2), 2004. In: Bulletin de l'Académie Vétérinaire de France tome 159 n°2, 2006. pp. 175-176

    Claude Bourgelat, un Lyonnais fondateur des deux premières écoles vétérinaires du monde (1712-1779). Par Philippe Cottereau et Janine Weber-Godde, ENS Editions, Ecole normale supérieure de Lyon, 2011

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    Orth Gérard. Claude Bourgelat, un Lyonnais fondateur des deux premières écoles vétérinaires du monde (1712-1779). Par Philippe Cottereau et Janine Weber-Godde, ENS Editions, Ecole normale supérieure de Lyon, 2011. In: Bulletin de l'Académie Vétérinaire de France tome 165 n°2, 2012. Séance thématique: Le bon usage des antibiotiques. pp. 185-187

    La prévention du cancer du col utérin

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    Le dépistage du cancer du col de l’utérus concerne les femmes âgées de 25 à 65 ans. Il consiste à recueillir des cellules en frottant le col utérin avec une spatule. Le matériel biologique prélevé est ensuite déposé directement sur lame ou après l’avoir dilué dans un conservateur et cytocentrifugé (cytologie en milieu liquide). Il est ensuite analysé au microscope. En juillet 2019, la Haute autorité de santé a recommandé de rechercher l’ADN des types de papillomavirus humains (human papillomavirus, HPV) à haut risque ou potentiellement oncogènes, par PCR (test HPV HR), comme première étape du dépistage après l’âge de 30 ans. Ce test est plus sensible que la cytologie pour diagnostiquer une lésion histologique malpighienne intraépithéliale de haut grade, et plus efficace pour prévenir les cancers invasifs. Lorsque ce test est positif, une analyse cytologique sur le même prélèvement est réalisée afin de sélectionner les patientes nécessitant une colposcopie. Le deuxième volet de la prévention du cancer du col utérin repose sur la vaccination. Nous discutons, dans cette revue, l’importance de la détection des lésions du col utérin et le rôle des HPV
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