| a health evaluation in a colony of captive collared peccaries (tayassu tajacu) in the eastern amazon. | this study pretends to determine baseline data on the health and mortality of a colony of captive collared peccaries in the eastern amazon (belém, state of pará, brazil) during a 65-months survey. thirty-nine out of 166 animals (23.5%) died and were examined post-mortem. monthly mortality averaged 1.2%. the highest mortality rate was observed in newborns (74.4%). abandonment by the mother and aggression were responsible for 24.1% and 13.8% of the total newborn deaths, respectively. most frequent ... | 2006 | 16487552 |
| characterization in vivo and in vitro of a strain of leishmania (viannia) shawi from the amazon region. | the present study analyses complement resistance, cell surface carbohydrates expression, lipidic composition and morphology in vivo and in vitro, of leishmania (viannia) shawi, a parasite identified in the amazon region, pará state, in 1989. we demonstrated that promastigotes in the stationary (stat) growth phase are more resistant to complement lysis than in the logarithmic (log) growth phase. ultrastructural analyses and imidazol technique showed accumulation of lipids in stat growth phase pro ... | 2009 | 19567230 |
| evidence for zoonotic transmission of group c rotaviruses among children in belém, brazil. | the prevalence and potential zoonotic transmission of group c rotavirus (rvc) were examined by testing fecal samples collected from children during a longitudinal study that was carried out in the outskirts of belém, brazil, from december 1982 to march 1986. the study involved a group of 30 children who were followed from birth to 3 years. of the 77 samples tested from 29 children, 5 (6.5%) were positive for human and 3 (4%) for porcine rvc by using nested pcr assay with primers specific for vp6 ... | 2008 | 18649333 |
| molecular characterization of vp4 and nsp4 genes from rotavirus strains infecting neonates and young children in belém, brazil. | several reports have identified p[6] specificities in humans and in animals in different countries of the world, but few sequence data are available in public databases. in this work we have characterized the vp4 strains bearing p[6] specificity and nsp4 genotypes among diarrheic young children and diarrheic and non-diarrheic neonates from three studies previously conducted in belém, northern region of brazil. as the to vp8* fragment, we observed a close relationship to both human prototypes of ... | 2007 | 17376554 |
| detection of a neonatal human rotavirus strain with vp4 and nsp4 genes of porcine origin. | a human rotavirus strain (nb-150) was detected in stool samples from a neonate hospitalized for mild/moderate community-acquired diarrhoea. this baby lived in the outskirts of belém, brazil, under poor sanitation conditions. the nb-150 strain displayed a typical long electrophoretic pattern with 11 gene segments. it had two vp7 alleles, g1 and g4, and belonged to vp6 subgroup ii. a close relatedness with human rotaviruses was shown for vp7 alleles: g1 (96.9-100 % similarity at the amino acid lev ... | 2007 | 17374895 |
| description of males of parabronema pecariae ivaschkin, 1960 (nematoda, habronematoidea) parasitizing peccaries (mammalia, tayassuidae) in brazil. | nematodes studied herein and identified as parabronema pecariae were collected in 1936 in the states of rio de janeiro and pará and in 1940 in the state of mato grosso do sul, brazil. this species was proposed, with basis on female specimens that had been described earlier as parabronema sp. although the presence of males of p. pecariae was previously reported in brazil, their description was not provided. the present paper deals with the first complete morphometric data on male specimens of p. ... | 2000 | 11080772 |