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A Cecille

Publications and source records attributed to A Cecille.

6 recordsLinked to original sources
PubMed2004

[Epidemiology and antimicrobial resistance of Streptococcus pneumoniae strains isolated in Ile de France area during 2001].

OBJECTIVE: The authors wanted to assess the level of Streptococcus pneumoniae antibiotic resistance in Ile de France. METHOD: In 2001, 637 clinical strains of S. pneumoniae were prospectively collected from 32 microbiology laboratories. RESULTS: Fifty one percent of strains were isolated from children under 15 years of age and 49% from adults. In children, 76% of strains came from otitis media, 20% from blood culture, in adults most strains (92%) came from blood culture. The overall prevalence of non-susceptible penicillin pneumococci was 61% higher in children (73%) than in adults (50%). Among the non-susceptible penicillin pneumococci 21.8% were resistant (CMI > 1 mg/l). Strains with decreased susceptibility to amoxicillin and cefotaxime were 38% and 17% respectively. Resistant strains to these two drugs (CMI > 2 mg/l) were rare 2.6% and 0.4% respectively. Among other antimicrobial agents, rate of resistance was 63% to erythromycin, 47% to cotrimoxazole, 40% to tetracycline, and 23% to chloramphenicol. The most frequent serogroups were serogroups 19 and 14, respectively 23% and 18%. Serotypes included in heptavalent vaccine covered 90% of children strains under 2 years of age. CONCLUSIONS: The prevalence of resistance to penicillin was high in children particularly in otitis media pus (76%).

Adult↗
PubMed1999

[Retrospective study of the value of the RIBA-3 test in 68 patients with discordant serologies with regard to hepatitis C obtained with third generation ELISA tests. Is there still a value in RIBA-3?].

The aim of the present study is to evaluate the ability of RIBA-3 to resolve cases with controversial ELISA results, since modifications have been introduced by the manufacturer in July 1997 to analyse immunoblot patterns. Sera from 68 patients are studied: 49 controversial cases Ortho/Murex, 17 Ortho/Abbott and 2 cases tested by the three ELISA kits. Indeterminate patterns by ELISA assays remain unresolved in 65% of the samples. RIBA analysis performed in patients with controversial results Ortho/Murex seems to reveal a lack in sensitivity of the Murex kit, but does not show differences in the specificity between these two immunoassays. The RIBA patterns among the samples with Ortho/Abbott controversial results do not demonstrate any discrepancy in the sensitivity of these ELISA tests but it appears that Ortho could be less specific. Our data need to be further confirmed by the analysis of more samples. At last, when the ELISA result is included in the grayzone, the RIBA pattern is generally indeterminate and it is negative in other cases. Finally, the controversial ELISA results, that are mainly found in patients with severe immunosuppression, remain indeterminate depending on the RIBA test. Moreover, the immunoblot is less sensitive and more expensive than any other HCV ELISA test, so there is no convenience to use it for confirmation of a preliminary positive or indeterminate screening.

Enzyme-Linked Immunosorbent Assay↗
PubMed1999

[Prenatal diagnosis of viral infections. A two year study in Strasbourg].

We report here the results of a 2-year study on the prenatal diagnosis of viral infections in Strasbourg. This screening was carried out by virus isolation, by PCR assay, or by detection of IgM fetal antibody for 98 pregnant women at risk of transmitting one of the viruses that causes fetal disease such as parvovirus B19 (B19), Herpesviruses [cytomegalovirus (CMV), varicella-zoster virus, herpes simplex virus] and rubella virus. A viral etiology was proven in 7 out 98 cases: PCR applied to B19 DNA detection was positive in 5 amniotic fluids (AF), 2 fetal serums and one ascitic liquid. The diagnosis of 2 cases of CMV infection was obtained by both PCR and virus isolation in AF from twins fetuses. The detection of specific IgM in maternal serum or fetal serum is useful to achieve the diagnosis but serological tests on other samples have no efficiency. No virus was found in any other specimen, but the genome of Toxoplasma gondii was detected by PCR in 1 of 17 AF samples analyzed at the Institut de Parasitologie. These findings show that PCR assay is a sensitive method for the positive diagnosis of intrauterine infection and promises to careful follow-up of the pregnancy.

Adolescent↗
PubMed1999

[A case report of post-rubella myelitis in an adult].

Neurological complications following rubella are only rarely encountered. We report a case of isolated myelitis. A 44-year-old healthy female suffered from an erythematous macular rash which rapidly cleared. However, the following days, dysuria initiated hospitalization. On admission, she was febrile but alert and in normal mental status. General physical examination was quite unremarkable. Four days later, she suffered from acute urinary retention, fecal retention and vaginal hypoesthesia. Routine laboratory data, chest skull and spinal column X-rays were unremarkable. The sterile cerebrospinal fluid contained 30 lymphocytes/mm3, 0.48 g/ml of protein but normal amount of glucose. Rubella antibody titers showed a significant elevation and specific IgM were detected by immunocapture. Improvement was rapid and recovery was uneventful except a mild vaginal hypoesthesia that persisted 5 weeks later. Diffuse myelitis occurring shortly after rubella vaccination have also been described. The immunopathological mechanisms by which involvement of the nervous system occurs is far from clear. Little is known about the pathogenesis of post-vaccination myelitis and although the mecanism of sensitization and the specific neural antigens are not known, post-infectious and post-vaccinal myelitis are thought to share a common pathogenic basis.

Adult↗
PubMed1997

Establishment of a cell line expressing human parvovirus B19 non-structural protein from an inducible promoter.

Human parvovirus B19 non-structural (NS) protein is supposed to play a major role in B19 replication and transcription, and therefore in B19 pathogenicity. Constitutive expression of NS protein in stable cell lines has failed so far, presumably because of its cytotoxicity. To avoid this cytotoxic effect, we have cloned the NS gene in an Epstein-Barr virus episomal vector under the control of a steroid inducible promoter (5xGRE) and transfected this construction into HeLa cells. We obtained stable cell lines inducibly expressing high level of NS protein, with 50% of the cells demonstrating specific nucleo-cytoplasmic staining. In Western blot analysis, three B19 NS proteins (72, 68 and 60 kDa) were found but a unique NS transcript was detected by Northern blotting. The NS protein expressed in HeLa cell lines was demonstrated to be functional as it trans-activates the B19 P6 promoter. These cell lines might be major tools for further study and characterization of B19 NS protein.

Blotting, Western↗