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Genetic variability of Leishmania (Leishmania) infantum causing human visceral leishmaniasis in the Southeastern Brazil
Lima, Vinicius Alves; Silva, Renata Elen Costa; Camargo, Luiz Henrique Moraes Caetano; Hiramoto, Roberto Mitsuyoshi; Leal, Elcio de Souza; Braz, Lucia Maria Almeida; Lindoso, José Angelo Lauletta.
  • Lima, Vinicius Alves; Universidade de São Paulo. Faculdade de Medicina. Departamento de Moléstias Infecciosas e Parasitárias. São Paulo. BR
  • Silva, Renata Elen Costa; Universidade de São Paulo. Faculdade de Medicina. Departamento de Moléstias Infecciosas e Parasitárias. São Paulo. BR
  • Camargo, Luiz Henrique Moraes Caetano; Universidade de São Paulo. Faculdade de Medicina. Departamento de Moléstias Infecciosas e Parasitárias. São Paulo. BR
  • Hiramoto, Roberto Mitsuyoshi; Instituto Adolfo Lutz. São Paulo. BR
  • Leal, Elcio de Souza; Universidade Federal do Pará. Instituto de Ciências Biológicas. Belém. BR
  • Braz, Lucia Maria Almeida; Universidade de São Paulo. Faculdade de Medicina. Departamento de Medicina Preventiva. São Paulo. BR
  • Lindoso, José Angelo Lauletta; Universidade de São Paulo. Faculdade de Medicina. Departamento de Moléstias Infecciosas e Parasitárias. São Paulo. BR
Article Dans Anglais | LILACS-Express | LILACS | ID: biblio-1521578
ABSTRACT
ABSTRACT Leishmania infantum is a protozoan that causes visceral leishmaniasis (VL) in the Americas and some regions of Europe. The disease is mainly characterized by hepatosplenomegaly and fever, and can be fatal. Factors related to the host and parasite can contribute to the transmission of Leishmania and the clinical outcome. The intraspecific genetic variability of L. infantum strains may be one of these factors. In this study, we evaluated the genetic variability of L. infantum obtained from bone marrow smear slides from patients in the Sao Paulo State, Brazil. For this, the minicircle of the kDNA hypervariable region was used as target by Sanger sequencing. By analyzing the similarity of the nucleotides and the maximum likelihood tree (Fasttree), we observed a high similarity (98%) among samples. Moreover, we identified four different profiles of L. infantum. In conclusion, L. infantum strains from Sao Paulo State, Brazil, showed low diversity measured by minicircle of the kDNA hypervariable region.


Texte intégral: Disponible Indice: LILAS (Amériques) Pays comme sujet: Amérique du Sud / Brésil langue: Anglais Texte intégral: Rev. Inst. Med. Trop. São Paulo (Online) Thème du journal: Medicina Tropical Année: 2023 Type: Article / descriptif de projet Pays d'affiliation: Brésil Institution/Pays d'affiliation: Instituto Adolfo Lutz/BR / Universidade Federal do Pará/BR / Universidade de São Paulo/BR

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Texte intégral: Disponible Indice: LILAS (Amériques) Pays comme sujet: Amérique du Sud / Brésil langue: Anglais Texte intégral: Rev. Inst. Med. Trop. São Paulo (Online) Thème du journal: Medicina Tropical Année: 2023 Type: Article / descriptif de projet Pays d'affiliation: Brésil Institution/Pays d'affiliation: Instituto Adolfo Lutz/BR / Universidade Federal do Pará/BR / Universidade de São Paulo/BR