Mice were infected with blood forms of 17 Trypanosoma cruzi strains recently isolated from chronic patients, which were dassified as of low, medium or high virulence on grounds of the prepatent period, parasitemia and mortality at the acute phase. A total of 212 mice were studied after 3, 6, 9 and 12 months of infection. In the chronic phase, intra...
Biopsies from cutaneous and mucosal lesions from 40 patients with active paracoccidioidomycosis, were studied histopathologically. All cases exhibited chronic granulomatous inflammation and 38 also presented suppuration; this picture corresponded to the mixed mycotic granuloma (MMG). Pseudoepitheliomatous hyperplasia and the transepidermic (or epit...
Published in Archiv für Protistenkunde : Protozoen, Algen, Pilze
Nosema pyrgomorpha a été trouvée chez les larves et adultes de Pyrgomorpha conica tereticornis (Orthoptera, Pyrgomorphidae).Elle parasite l'épithélium intestinal, le tissu adipeux et les muscles.Tous ses stades de développement (mérontes, sporontes, sporoblastes et spores) sont diplocaryotiques et en contact direct avec le cytoplasme de la cellule ...
Published in Oecologia
We evaluated the effects of two classes of phenols on performance of penultimate instar southern armyworms, Spodoptera eridania. One class consisted of phenols containing a catechol (ortho-dihydroxybenzene) moiety and included chlorogenic acid, quercetin, rutin, and rhamnetin. A second group consisted of the phenolic glycoside salicin and its deriv...
The effects of infection with Trypanosoma cruzi on the electrocardiographic tracings of mice were studied in 4.groups of animals: (1) normal; (2) infected with a pathogenic T. cruzi strain (TS COB); (3) immunized with 3 intraperitoneal inocula of 10(6) attenuated T. cruzi epimastigotes (TCC) and (4) immunized-infected, which sequentially received t...
Renal involvement has been well documented in patients with hepatosplenic schistosomiasis and in patients with prolonged salmonella bacteremia (PSB). Whether there is a specific renal lesion related to PSB or the chronic bacterial infection aggravates a pre-existing schistosomal glomerulopathy has been a matter of controversy. To analyze the clinic...
A new Trypanosoma cruzi stock isolated from a patient in the chronic phase of Chagas' disease with the digestive and cardiac fortn of the disease was characterized by experimental infection in isogenic, susceptible, A/Sn strain mice. Parasitemia curves showed up to 1.7x10(6) parasites/ml and no mortality was observed up to 300 days post infection. ...
This descriptive study compared pulpal reaction to ferric sulphate and formocresol.- The sample consisted of 10 cats which were treated with pulpotomies on all four canine teeth. Teeth on one side were treated with ferric sulphate and the ones on the contra-lateral si de with formocresol. Histological evaluations were performed 15 and 45 days posto...
Published in Acta Tropica
Schistosomiasis of the lower female reproductive tract manifests itself in broad spectrum of clinical features. However, clinical and histopathological findings have never been studied in a synoptic manner. Based on the assumption that any type of pathology present in the female reproductive tract is the expression of a complex pathophysiological r...
