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Home / Archives for Johny Wysllas de Freitas Oliveira

VLP-Based Vaccines as a Suitable Technology to Target Trypanosomatid Diseases

  • Autores: Aline Maria Vasconcelos Queiroz, Johny Wysllas de Freitas Oliveira, Cláudia Jassica Moreno, Diego M.A.Guérin, Marcelo Sousa-Silva
  • Ano de Publicação: 2021
  • Journal: Vaccines, 9(3), art 220, [Special Issue: Host Immune Response to Infectious Diseases pp 1 - 9]
  • Link: https://doi.org/10.3390/vaccines9030220

ABSTRACT Research on vaccines against trypanosomatids, a family of protozoa that cause neglected tropical diseases, such as Chagas disease, leishmaniasis, and sleeping sickness, is a current need. Today, according to modern vaccinology, virus-like particle (VLP) technology is involved in many vaccines, including those undergoing studies related to COVID-19. The potential use of VLPs as vaccine […]
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Insights of antiparasitic activity of sodium diethyldithiocarbamate against different strains of Trypanosoma cruzi

  • Autores: Johny Wysllas de Freitas Oliveira, Taffarel Melo Torres, Cláudia Jassica Gonçalves Moreno, Bruno Amorim-Carmo, Igor Zumba Damasceno, Ana Katarina Menezes Cruz Soares, Jefferson da Silva Barbosa, Hugo Alexandre Oliveira Rocha, Marcelo Sousa-Silva
  • Ano de Publicação: 2021
  • Journal: Scientific Reports, vol 11, art 11200
  • Link: https://doi.org/10.1038/s41598-021-90719-0

ABSTRACT Chagas disease is caused by Trypanosoma cruzi and affects thousands of people. Drugs currently used in therapy are toxic and have therapeutic limitations. In addition, the genetic diversity of T. cruzi represents an important variable and challenge in treatment. Sodium diethyldithiocarbamate (DETC) is a compound with pharmacological versatility acting as metal chelators and ROS generation. Thus, the objective […]
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Antimicrobial Activity of Chitosan Oligosaccharides with Special Attention to Antiparasitic Potential

  • Autores: Nayara Sousa da Silva, Nathália Kelly Araújo, Alessandra Daniele-Silva, Johny Wysllas de Freitas Oliveira, Júlia Maria de Medeiros, Renata Mendonça Araújo, Leandro De Santis Ferreira, Hugo Alexandre Oliveira Rocha, Arnóbio Antônio Silva-Junior, Marcelo Sousa-Silva, Matheus de Freitas Fernandes-Pedrosa
  • Ano de Publicação: 2021
  • Journal: Marine Drugs, 19(2), art 110
  • Link: https://doi.org/10.3390/md19020110

ABSTRACT The global rise of infectious disease outbreaks and the progression of microbial resistance reinforce the importance of researching new biomolecules. Obtained from the hydrolysis of chitosan, chitooligosaccharides (COSs) have demonstrated several biological properties, including antimicrobial, and greater advantage over chitosan due to their higher solubility and lower viscosity. Despite the evidence of the biotechnological […]
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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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