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Home / Archives for Memórias do Instituto Oswaldo Cruz

Liaisons dangereuses: Cross-border gene flow and dispersal of insecticide resistance-associated genes in the mosquito aedes aegypti from Brazil and French Guiana

  • Autores: Salgueiro P, Restrepo-Zabaleta J, Costa M, Galardo AKR, Pinto J, Gaborit P, Guidez A, Martins AJ, Dusfour I
  • Ano de Publicação: 2019
  • Journal: Memórias do Instituto Oswaldo Cruz
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/31553370

BACKGROUND: In recent years, South America has suffered the burden of continuous high impact outbreaks of dengue, chikungunya and Zika. Aedes aegypti is the main mosquito vector of these arboviruses and its control is the only solution to reduce transmission. OBJECTIVES: In order to improve vector control it is essential to study mosquito population genetics […]
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Detection of tuberculosis drug resistance a comparison by Mycobacterium tuberculosis MLPA assay versus Genotype®MTBDRplus

  • Autores: Anthony RM, Barcellos RB, Bergval I, Costa ERD, Esteves LS, Kritski A, Nunes LS, Oliveira MM, Ramalho DM, Rodenbusch R, Rossetti ML, Santos PFGD, Sengstake S, Viveiros M
  • Ano de Publicação: 2017
  • Journal: Memórias do Instituto Oswaldo Cruz
  • Link: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762017000600396&lng=en&tlng=en

To cope with the emergence of multidrug-resistant tuberculosis (MDR-TB), new molecular methods that can routinely be used to screen for a wide range of drug resistance related genetic markers in the Mycobacterium tuberculosis genome are urgently needed. To evaluate the performance of multiplex ligaton-dependent probe amplification (MLPA) against Genotype® MTBDRplus to detect resistance to isoniazid […]
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Immunoproteomics of Plasmodium falciparum-infected red blood cell membrane fractions

  • Autores: Cabral FJ, Carlos BC, Martha RD, Medeiros MM, Silva LHPD, Silva NM, Stabeli RG, Vianna LG, Wunderlich G
  • Ano de Publicação: 2017
  • Journal: Memórias do Instituto Oswaldo Cruz

Plasmodium falciparum The surface of infected red blood cells (iRBCs) has been widely investigated because of the molecular complexity and pathogenesis mechanisms involved. Asymptomatic individuals are important in the field. They can perpetuate transmission as natural reservoirs. However, this presents a challenge for diagnosing malaria because of their low levels of circulating parasites. Recent studies […]
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Highly active ozonides selected against drug resistant malaria

  • Autores: Cabral L, Cristiano MLS, de Sousa B, Lobo L, Nogueira F
  • Ano de Publicação: 2016
  • Journal: Memórias do Instituto Oswaldo Cruz
  • Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957497/

Ever increasing multi-drug resistance by Plasmodium falciparum is creating new challenges in malaria chemotherapy. In the absence of licensed vaccines, treatment and prevention of malaria is heavily dependent on drugs. Potency, range of activity, safety, low cost and ease of administration are crucial issues in the design and formulation of antimalarials. We have tested three synthetic ozonides […]
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Sequencing of E2 and NS5A regions of HCV genotype 3a in Brazilian patients with chronic hepatitis

  • Autores: Azevedo RS, Carrilho FJ, Gonçalves L, Malta Fde M, Medeiros-Filho JE, Pinho JR, Silva LC
  • Journal: Memórias do Instituto Oswaldo Cruz
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=Sequencing+of+E2+and+NS5A+regions+of+HCV+genotype+3a+in+Brazilian+patients+with+chronic+hepatitis

Hepatitis C virus (HCV) is a major cause of liver disease throughout the world. The NS5A and E2 proteins of HCV genotype 1 were reported to inhibit the double-stranded (ds) RNA-dependent protein kinase (PKR), which is involved in the cellular antiviral response induced by interferon (IFN). The response to IFN therapy is quite different between […]
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About GHTM

GHTM is a R&D Center that brings together researchers from IHMT with a track record in Tropical Medicine and International/Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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