Linguatulosis is a zoonosis caused by Linguatula serrata. The nymph and adult stages of the parasite can affect humans, and the man main mechanisms of transmission is through contact with domestic dogs and ingestion of uncooked infected cattle viscera. This study aimed to determine the prevalence, mean abundance, and the mean intensity of the nymphal stage ofL. serrata in mesenteric lymph nodes of cattle slaughtered in two abattoirs in Lima, Peru. The animals were brought from the departments of Puno, Junín, La Libertad, Amazonas, Pasco and Lima. A total of 3576 lymph nodes from 368 cattle were collected, fat was removed and stored at 5 °C. Nodes with micro abscesses, calcified granulomas and yellow, green or gray nodules were selected and longitudinal cuts were done. Nymphs were fixed and mounted for evaluation. Results of the morphometry showed averages of 4.95 mm total length, 1.39 ...

La linguatulosis es una zoonosis causada por Linguatula serrata, parásito que puede afectar al hombre en su estadio ninfal y adulto, siendo los principales mecanismos de transmisión el contacto con el perro doméstico y la ingesta de vísceras infectadas mal cocidas de bovinos. El presente estudio tuvo como objetivo determinar la prevalencia, abundancia e intensidad media del estadio ninfal de L. serrata en ganglios linfáticos mesentéricos yeyuno-iliacos de reses beneficiadas en dos camales de la ciudad de Lima, Perú, procedentes de los departamentos de Puno, Junín, La Libertad, Amazonas, Pasco y Lima. Se recolectaron 3576 ganglios de 368 animales, se les retiró la grasa circundante y refrigeraron a 5 °C hasta su procesamiento. Se realizaron cortes longitudinales en ganglios con microabscesos, granulomas calcificados o con nódulos de color amarillo, verde o gris. Las ninfas cole...

Objectives: To perform an epidemiological study on presence of Chaga’s disease and its vectors at northern and nor oriental Peru. Design: Descriptive, transversal study. Setting: Daniel A. Carrion Tropical Medicine Institute, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biologic material: Triatomines positive to Trypanosoma cruzi Chagas 1909; one month-old Swiss- Webster male rats. Interventions: In September 2008 a visit was done to Chilete, Paredones, Contumaza province, Cajamarca, and to Pampa Larca, La Puerta, Guitarras and Suyo at Ayabaca province, Piura, collecting 10 Panstrongylus chinai (Del Ponte, 1929) specimens at Piura and 12 Panstrongylus herreri (Wygodzinsky, 1948) specimens at Chilete, Cajamarca. Trypanosoma strains were isolated in Swiss Webster white male one month-old rats, and maintained by successive transfers. Both parasitemia curve an...

The classic treatment of the cutaneous leishmaniosis consists on the injection of 15-20 ampoule of Glucantine what causes serious secondary effects. This fact justifies the search of new medications what motivated the present investigation. The objective was to evaluate the leishmanicidal activity of the methanolic extracts (ME) of the white, red, purple and black ecotypes of Lepidium peruvianum Chacón (at present Lepidium meyenii Walp.) about the growth of Leishmania braziliensis peruviana in vitro. The promastigotes reached the logarithmic phase to the fifth day of cultivation at 27 ºC in the two-phase Columbia medium with 15% of defibrinated sheep blood and they faced, for separate, with the ME to concentrations of 50, 100, 200 and 400 μg/ml. The recounts were made daily with camera Neubauer. The maximum decrease of promastigotes (17.41% of viability) took place to the second day f...

The classic treatment of the cutaneous leishmaniosis consists on the injection of 15-20 ampoule of Glucantine what causes serious secondary effects. This fact justifies the search of new medications what motivated the present investigation. The objective was to evaluate the leishmanicidal activity of the methanolic extracts (ME) of the white, red, purple and black ecotypes of Lepidium peruvianum Chacón (at present Lepidium meyenii Walp.) about the growth of Leishmania braziliensis peruviana in vitro. The promastigotes reached the logarithmic phase to the fifth day of cultivation at 27 ºC in the two-phase Columbia medium with 15% of defibrinated sheep blood and they faced, for separate, with the ME to concentrations of 50, 100, 200 and 400 μg/ml. The recounts were made daily with camera Neubauer. The maximum decrease of promastigotes (17.41% of viability) took place to the second day f...