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Diversidad molecular de variantes patogénicas de Vibrio parahaemolyticus en el Perú / Molecular diversity in pathogenic variants of vibrio parahaemolyticus in Peru
Caro-Castro, Junior; Mestanza, Orson; Quino, Willi; Gavilán, Ronnie G.
  • Caro-Castro, Junior; Instituto Nacional de Salud. Lima. PE
  • Mestanza, Orson; Instituto Nacional de Salud. Lima. PE
  • Quino, Willi; Instituto Nacional de Salud. Lima. PE
  • Gavilán, Ronnie G; Instituto Nacional de Salud. Lima. PE
Rev. peru. med. exp. salud publica ; 37(2): 270-275, abr.-jun. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1127129
RESUMEN
RESUMEN Con el objetivo de determinar la diversidad de variantes patogénicas de Vibrio parahaemolyticus en el Perú durante el periodo 1995-2017, se analizaron 102 genomas peruanos (97 clínicos y 5 ambientales) empleando el esquema de tipificación multilocus y BLASTn para la búsqueda de genes de virulencia. Se identificaron 15 tipos de secuencia diferentes, encontrándose que el genotipo ST3, perteneciente al clon pandémico, fue el más abundante, con 52% (n=53); seguido por el ST120, con 23,5% (n=24); y el complejo clonal CC345, con 11,8% (n=12). Un total de 89 cepas analizadas presentaron genes que codifican la isla de patogenicidad VpaI-7 (87,3%), mientras que 96 presentaron el gen tdh (94,1%), y 6, el trh (5,9%). Durante el periodo evaluado, se resalta la predominancia del ST3, causante de un importante brote en el pasado del Perú, además de otros genotipos patógenos que representan un riesgo latente en salud pública asociado al consumo de alimentos marinos.
ABSTRACT
ABSTRACT During the period from 1995 to 2017, in order to determine the diversity of Vibrio parahaemolyticus pathogenic variants in Peru, 102 Peruvian genomes (97 from a hospital setting and 5 from an out-of-hospital setting) were analyzed using the multilocus typification scheme and BLASTn in the search for virulence genes. Fifteen different sequence types were identified. It was found that the ST3 genotype, which is found in the pandemic clone, was the most abundant, with 52% (n=53); followed by ST120, with 23.5% (n=24); and the CC345 clonal complex, with 11.8% (n=12). A total of 89 analyzed strains presented genes encoding the pathogenicity island VpaI-7 (87.3%), while 96 presented the tdh gene (94.1%), and 6 the trh gene (5.9%). The ST3 genotype was the predominant one during the evaluated period, this genotype was the cause of a major outbreak in Peru's past history. Other pathogenic genotypes found represent a latent public health risk associated with seafood consumption.
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Full text: Available Index: LILACS (Americas) Main subject: Peru / Vibrio Infections / Vibrio parahaemolyticus / Disease Outbreaks / Molecular Typing / Whole Genome Sequencing Type of study: Prognostic study Limits: Humans Country/Region as subject: South America / Peru Language: Spanish Journal: Rev. peru. med. exp. salud publica Journal subject: Public Health Year: 2020 Type: Article Affiliation country: Peru Institution/Affiliation country: Instituto Nacional de Salud/PE

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Full text: Available Index: LILACS (Americas) Main subject: Peru / Vibrio Infections / Vibrio parahaemolyticus / Disease Outbreaks / Molecular Typing / Whole Genome Sequencing Type of study: Prognostic study Limits: Humans Country/Region as subject: South America / Peru Language: Spanish Journal: Rev. peru. med. exp. salud publica Journal subject: Public Health Year: 2020 Type: Article Affiliation country: Peru Institution/Affiliation country: Instituto Nacional de Salud/PE