Examinando por Autor "Martínez, Lily"
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Publicación Acceso abierto Actualización de la distribución geográfica de especies de Leishmania, caracterizadas por genética molecular, en el macrofoco de leishmaniasis del Caribe colombiano.(Bogotá, Colombia: Revista Biomédica, 2011., 2019-10-28) Martínez, Lily; Paternina Gómez, Margaret; Paternina, Luis E.; Pérez Doria, Alveiro; Bejarano, Eduar E.En Colombia existe un limitado conocimiento sobre la distribución geográfica de las especies que causan leishmaniasis, lo cual se debe a que el diagnóstico de la enfermedad y la instauración del tratamiento se basa casi exclusivamente en el examen microscópico directo, sin precisar la especie de Leishmania causal, a pesar de que existe una susceptibilidad diferencial del parásito a los medicamentos empleados. En este trabajo se actualiza la distribución geográfica de las especies de Leishmania en el norte de Colombia.Publicación Acceso abierto Evidence for anthropophily in five species of phlebotomine sand flies (Diptera: Psychodidae) from northern Colombia, revealed by molecular identification of bloodmeals.(Reino Unido: Acta Tropica, 2015., 2019-11-06) Paternina, Luís E.; Verbel Vergara, Daniel; Romero Ricardo, Luís; Pérez Doria, Alveiro; Paternina Gómez, Margaret; Martínez, Lily; Bejarano, Eduar E.Identification of the bloodmeal sources of phlebotomine sand flies is fundamental to determining which species are anthropophilic and understanding the transmission of Leishmania parasites in natural epidemiological settings. The objective of this study was to identify sand fly bloodmeals in the mixed leishmaniasis focus of the department of Sucre, northern Colombia. In all 141 engorged female sand flies were analyzed, after being captured in intradomiciliary, peridomiciliary and extradomiciliary habitats with Shannon and CDC traps and by active searching in diurnal resting sites. Bloodmeals were identified by sequencing and analysis of a 358 bp fragment of the mitochondrial gene Cytochrome b (CYB) and a 330 bp fragment of the nuclear gene prepronociceptin (PNOC). Using both genes 105 vertebrate bloodmeals were identified, with an efficiency of 72% for CYB but only 7% for PNOC. Ten species of vertebrates were identified as providing bloodmeal sources for eight sand fly species: Homo sapiens (Lutzomyia evansi, Lu. panamensis, Lu. micropyga, Lu. shannoni and Lu. atroclavata), Equus caballus (Lu. evansi, Lu. panamensis and Lu. cayennensis cayennensis), Eq. asinus (Lu. evansi and Lu. panamensis), Bos taurus 4 (Lu. evansi, Lu. panamensis and Lu. c. cayennensis), Tamandua mexicana (Lu. shannoni and Lu. trinidadensis), Proechimys guyanensis (Lu. evansi, Lu. panamensis and Lu. c. cayennensis), Mabuya sp. (Lu. micropyga), Sus scrofa (Lu. evansi and Lu. gomezi) and Gallus gallus (Lu. evansi). Cattle, donkeys, humans and pigs were significantly more important than other animals (P = 0.0001) as hosts of Lu. evansi, this being the most abundant sand fly species. The five Lutzomyia species in which blood samples of human origin were detected included Lu. micropyga and Lu. atroclavata, constituting the first evidence of anthropophily in both species.Publicación Acceso abierto Seroprevalencia a Rickettsia del grupo de las fiebres manchadas, en población humana de zona rural del municipio de Toluviejo, Colombia.(Sincelejo, Colombia: Revista De Investigaciones En Medicina Tropical, 2015., 2019-11-12) Arrieta Hernández, Norma; Salgado Mercado, Andrés; Paternina, Luis E.; Martínez, Lily; Vertel Morinson, Melba; Paternina Gómez, Margaret; Bejarano, Eduar E.Rickettsia is a genus consisting of obligate intracellular bacteria; the main vectors are arthropod ectoparasites, espe-cially ticks. In 2008, was detected in Toluviejo, Colombia, a seropositive person to Rickettsia, however, there is little information about the prevalence in this municipality.Objetives. To study the seroprevalence of Rickettsia of the spotted fever group and it’s relation with socio-demographic factors in a human population in Toluviejo, Colombia.