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Home / Archives for Journal of Antimicrobial Chemotherapy

Journal of Antimicrobial Chemotherapy

ECIL guidelines for the diagnosis of Pneumocystis jirovecii pneumonia in patients with haematological malignancies and stem cell transplant recipients

  • Autores: Alanio A, Alanio A, Bretagne S, Bretagne S, Cesaro S, Cesaro S, Cordonnier C, Cordonnier C, Donnelly J P, Einsele H, Einsele H, Hauser P M, Hauser PM, Helweg-Larsen J, Helweg-Larsen J, Johan Maertens J, Lagrou K, Lagrou K, Maschmeyer G, Maschmeyer G, Matos O, Melchers W J G
  • Ano de Publicação: 2016
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/27550991

The Fifth European Conference on Infections in Leukaemia (ECIL-5) convened a meeting to establish evidence-based recommendations for using tests to diagnose Pneumocystis jirovecii pneumonia (PCP) in adult patients with haematological malignancies.
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From multidrug-resistant to extensively drug-resistant tuberculosis in Lisbon, Portugal: The stepwise mode of resistance acquisition

  • Autores: Couto I, Jordao L, Macedo R, Machado D, Perdigão J, Portugal I, Silva C, Viveiros M
  • Ano de Publicação: 2013
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/23054995

The development and transmission of extensively drug-resistant (XDR) tuberculosis (TB) constitutes a serious threat to the effective control of TB in several countries. Here, in an attempt to further elucidate the dynamics of the acquisition of resistance to second-line drugs and investigate an eventual role for eis promoter mutations in aminoglycoside resistance, we have studied a set of multidrug-resistant (MDR)/XDR-TB isolates circulating in Lisbon, Portugal.
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HIV-1 protease mutation 82M contributes to phenotypic resistance to protease inhibitors in subtype G.

  • Autores: Camacho RJ, Covens K, Palma AC, Snoeck J, Van Laethem K, Vandamme AM
  • Ano de Publicação: 2012
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=HIV-1+protease+mutation+82M+contributes+to+phenotypic+resistance+to+protease+inhibitors+in+subtype+G

OBJECTIVES:
The purpose of this study was the qualitative and quantitative assessment of the in vitro effect of HIV-1 protease (PR) mutation 82M on replication capacity and susceptibility to the eight clinically available PR inhibitors (PIs).
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High-level resistance to isoniazid and ethionamide in multidrug-resistant Mycobacterium tuberculosis of the Lisboa family is associated with inhA double mutations

  • Autores: Boettger EC, Couto I, Machado D, Perdigão J, Portugal I, Ramos J, Ritter C, Viveiros M
  • Ano de Publicação: 2013
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/23539241

The purpose of this study was to determine the levels of isoniazid and ethionamide resistance and to identify associated mutations in endemic multidrug-resistant (MDR) strains of Mycobacterium tuberculosis from the Lisbon metropolitan area, Portugal.
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Pneumocystis jirovecii pneumonia: still a concern in patients with haematological malignancies and stem cell transplant recipients

  • Autores: a joint venture of The European Group for Blood and Marrow Transplantation (EBMT), Alanio A, Bretagne S, Cesaro S, Cordonnier C, Donnelly JP, Einsele H, Hauser PM, Helweg-Larsen J, Lagrou K, Maertens J; Fifth European Conference on Infections in Leukemia (ECIL-5), Maschmeyer G, Matos O, Melchers WJ, The European Organization for Research and Treatment of Cancer (EORTC), the Immunocompromised Host Society (ICHS) and The European LeukemiaNet (ELN)
  • Ano de Publicação: 2016
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/27550990

Pneumocystis jirovecii can cause life-threatening pneumonia following treatment for haematological malignancies or after HSCT. The mortality rate of P. jirovecii pneumonia (PCP) in these patients is 30%-60%, especially after HSCT. The clinical presentation of PCP in haematology differs from that associated with HIV infection, with the disease being acute and more often severe, having a lower fungal burden and being more frequently linked to treatment with corticosteroids.
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Mutations selected in HIV-2-infected patients failing a regimen including atazanavir

  • Autores: Aleixo MJ, Camacho RJ, Cavaco-Silva J, Cunha C, Faria D, Gomes P, Goncalves MF, Valadas E, Van Laethem K, Vandamme AM
  • Ano de Publicação: 2013
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/22977160

To investigate mutations selected in viruses from HIV-2-infected patients failing a highly active antiretroviral treatment (HAART) regimen including atazanavir/ritonavir.
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The demise of multidrug- resistant HIV-1: The national time trend in Portugal

  • Autores: Aguas MJ, Camacho RJ, Carvalho AP, Duque LM, Faria D, Faria T, Mansinho K, Peres S, Teófilo E, Theys K, Valadas E, Vandamme AM, Vera J, Vercauteren J
  • Ano de Publicação: 2013
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/23228933

Despite a decreasing mortality and morbidity in treated HIV-1 patients, highly active antiretroviral treatment (HAART) can still fail due to the development of drug resistance. Especially, multidrug-resistant viruses pose a threat to efficient therapy. We studied the changing prevalence of multidrug resistance (MDR) over time in a cohort of HIV-1-infected patients in Portugal.
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Decreasing population selection rates of resistance mutation K65R over time in HIV-1 patients receiving com- bination therapy including tenofovir

  • Autores: Abecasis AB, Abreu R, Aguas MJ, Aldir I, Aleixo MJ, Amaro G, Antunes F, Borges F, Botas J, Branco T, Caixas U, Camacho RJ, Diniz A, Doroana M, Duque L, Faria D, Faria N, Faria T, Fonseca P, Germano I, Gomes F, Guerreiro C, Jesus MB, Mansinho K, Mineiro A, Miranda AC, Narciso J, Neves I, Nina J, Pinheiro S, Pinto IV, Proença P, Reis AP, Roxo F, Sá J, Santos C, Snoeck J, Tavares L, Teófilo E, Theys K, Valadas E, Vandamme AM, Ventura F, Vera J, Vercauteren J
  • Ano de Publicação: 2013
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/23027713

The use of tenofovir is highly associated with the emergence of mutation K65R, which confers broad resistance to nucleoside/nucleotide analogue reverse transcriptase inhibitors (NRTIs), especially when tenofovir is combined with other NRTIs also selecting for K65R. Although recent HIV-1 treatment guidelines discouraging these combinations resulted in reduced K65R selection with tenofovir, updated information on the impact of currently recommended regimens on the population selection rate of K65R is presently lacking.
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Revisiting susceptibility testing in MDR-TB by a standardized quantitative phenotypic assessment in a European multicentre study

  • Autores: Cambau E, Hoffner S, Machado D, Matthys V, Perez Del Molino ML, Raskine L, Richter E, Ritter C, Tortoli E, Viveiros M
  • Ano de Publicação: 2015
  • Journal: Journal of Antimicrobial Chemotherapy
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/25587993

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