Resultados de Búsqueda por Autor

1

objeto de conferencia

Microbiomas y Genes de Resistencia a Antibióticos en una Planta de Tratamiento de Aguas Residuales en Lima

Publicado por
Tsukayama, Pablo, Pehrsson, E.C., Patel, S., Schiaffino Salazar, Francesca, Basilio, S., Wallace, M., Burnham, C.A., Lescano, A.G., Cabrera, L., Calderon, M., Gilman, R.H., Dantas, G.

Publicado 2019

Enlace

Las Plantas de Tratamiento de Aguas Residuales (PTAR) son ambientes ideales para la recombinación de genes de resistencia a antibióticos (GRA) entre bacterias: colectan heces de miles de personas y las mezclan bajo condiciones que promueven el crecimiento bacteriano para convertir materia orgánica en inorgánica, usualmente en presencia de antibióticos de uso clínico y veterinario. Las aguas tratadas son descargadas en ríos y océanos o utilizados para la irrigación de cultivos y áreas verdes en la ciudad, promoviendo la reintroducción de bacterias resistentes y GRAs en el ambiente y en poblaciones humanas. Es así como los microbiomas de aguas residuales se convierten en potenciales reservorios de GRAs disponibles para patógenos humanos. Entre 2013 y 2015, realizamos muestreos mensuales de aguas pre y post-tratamiento de una PTAR de Lima que procesa residuos de casi un millón...

2

artículo

Molecular identification of Bartonella bacilliformis in ticks collected from two species of wild mammals in Madre de Dios: Peru

Publicado por
Del Valle-Mendoza J., Rojas-Jaimes J., Vásquez-Achaya F., Aguilar-Luis M.A., Correa-Nuñez G., Silva-Caso W., Lescano A.G., Song X., Liu Q., Li D.

Publicado 2018

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ObjectiveTo study the presence of Bartonella bacilliformis in ticks collected from two wild mammals in Madre de Dios, Peru.ResultsA total of 110 ticks were collected. Among the 43 Amblyomma spp. extracted from the 3 Tapirus terrestris only 3 were positive for B. bacilliformis. In addition, 12 out of the 67 Rhipicephalus (Boophilus) microplus obtained from the 3 Pecari tajacu were positive for B. bacilliformis. For the first time B. bacilliformis have been detected in arthropods other than Lutzomyia spp. Further studies are required to elucidate the possible role of ticks in the spread of South American Bartonellosis.

3

artículo

Epidemiology of Plasmodium vivax malaria in Peru

Publicado por
Rosas-Aguirre A., Gamboa D., Manrique P., Conn J.E., Moreno M., Lescano A.G., Sanchez J.F., Rodriguez H., Silva H., Llanos-Cuentas A., Vinetz J.M.

Publicado 2016

Enlace

Malaria in Peru, dominated by Plasmodium vivax, remains a public health problem. The 1990s saw newly epidemic malaria emerge, primarily in the Loreto Department in the Amazon region, including areas near to Iquitos, the capital city, but sporadic malaria transmission also occurred in the 1990s-2000s in both north-coastal Peru and the gold mining regions of southeastern Peru. Although a Global Fund-supported intervention (PAMAFRO, 2005-2010) was temporally associated with a decrease of malaria transmission, from 2012 to the present, both P. Vivax and Plasmodium falciparum malaria cases have rapidly increased. The Peruvian Ministry of Health continues to provide artemesininbased combination therapy for microscopy-confirmed cases of P. Falciparum and chloroquine-primaquine for P. Vivax. Malaria transmission continues in remote areas nonetheless, where the mobility of humans and parasites fa...

4

artículo

Market Chickens as a Source of Antibiotic-Resistant Escherichia coli in a Peri-Urban Community in Lima, Peru

Publicado por
Murray M., Salvatierra G., Dávila-Barclay A., Ayzanoa B., Castillo-Vilcahuaman C., Huang M., Pajuelo M.J., Lescano A.G., Cabrera L., Calderón M., Berg D.E., Gilman R.H., Tsukayama P.

Publicado 2021

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The widespread and poorly regulated use of antibiotics in animal production in low- and middle-income countries (LMICs) is increasingly associated with the emergence and dissemination of antibiotic resistance genes (ARGs) in retail animal products. Here, we compared Escherichia coli from chickens and humans with varying levels of exposure to chicken meat in a low-income community in the southern outskirts of Lima, Peru. We hypothesize that current practices in local poultry production result in highly resistant commensal bacteria in chickens that can potentially colonize the human gut. E. coli was isolated from cloacal swabs of non-organic (n = 41) and organic chickens (n = 20), as well as from stools of market chicken vendors (n = 23), non-vendors (n = 48), and babies (n = 60). 315 E. coli isolates from humans (n = 150) and chickens (n = 165) were identified, with chickens showing highe...

5

artículo

The immunoglobulin M-Shed acute phase antigen (SAPA)-test for the early diagnosis of congenital Chagas disease in the time of the elimination goal of mother-to-child transmission

Publicado por
Castro-Sesquen Y.E., Tinajeros F., Bern C., Galdos-Cardenas G., Malaga E.S., Valencia Ayala E., Hjerrild K., Clipman S.J., Lescano A.G., Bayangos T., Castillo W., Menduiña M.C., Talaat K.R., Gilman R.H., Verastegui M., Calderon M., Chávez C., Leigue J.K., Hinojosa E., Urquizu F., Gorena M., Serrudo V., Cabrera L., Romero Y.K., Chagas Working Group in Bolivia and Peru

Publicado 2021

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The work was supported by Fondo Nacional de Desarrollo Cientifico, Tecnologico y de Innovacion Tecnologica, FONDECYT, Peru (N084-2016) to Y. E. C.-S.; the National Institutes of Health (R01-AI87776 and D43-TW010074 to R. H. G. and D43 TW007393 to A. G. L.); and InBios International, Inc to R. H. G. through the Johns Hopkins Bloomberg School of Public Health.

6

artículo

Antibody Banding Patterns of the Enzyme-Linked Immunoelectrotransfer Blot and Brain Imaging Findings in Patients with Neurocysticercosis

Publicado por
Arroyo G., Rodriguez S., Lescano A.G., Alroy K.A., Bustos J.A., Santivañez S., Pretell E.J., Garcia H.H., Gilman R.H., Gonzalez A.E., Tsang V.C.W., Gonzalez I., Saavedra H., Martinez M., Alvarado M., Verastegui M., Zimic M., Mayta H., Guerra C., Castillo Y., Castro Y., Lopez M.T., Gavidia C.M., Gomez L., Moyano L.M., Gamboa R., Muro C., Vilchez P., Nash T.E., Mahanty S., Noh J., Handali S., Friedland J.

Publicado 2018

Enlace

This work was partially supported by the Fogarty International Center/NIH (training grant numbers D43TW001140 and D43TW007393) and by the National Council for Science, Technology and Innovation of Peru (CONCYTEC).