RESUMO
A coqueluche é uma doença infecciosa aguda e transmissível, causada pela Bordetella pertussis. Os autores relatam um caso fatal de coqueluche em um lactente.
Pertussis is an acute infectious disease and transmissible caused by Bordetella pertussis. The authors report a fatal case of pertussis in an infant.
Assuntos
Humanos , Feminino , Lactente , Bordetella pertussis , Doenças Transmissíveis , Coqueluche , Pneumopatias , Infecções RespiratóriasRESUMO
A tuberculose é uma doença infecciosa milenar causada pelo Mycobacterium tuberculosis. Os autores relatam uma forma de apresentação atípica da tuberculose pulmonar.
Tuberculosis is an ancient infectious disease caused by Mycobacterium tuberculosis. The authors report an atypical presentation of pulmonary tuberculosis.
Assuntos
Humanos , Feminino , Adulto , Doenças Transmissíveis , Infecções por Mycobacterium , Tuberculose Pulmonar , Pneumopatias , Infecções RespiratóriasAssuntos
Humanos , Feminino , Pessoa de Meia-Idade , Infecções Bacterianas e Micoses , Criptococose , Cryptococcus neoformans , MicosesRESUMO
Biomphalaria glabrata, a freshwater gastropod mollusc, was tested as biondicator organism to assess cadmium, lead and arsenic exposure using acute laboratory bioassays. Modifications of glycogen levels were measured in different anatomical regions of B. glabrata in order to test the usefulness of this parameter as a general biomarker of chemical stress. The snails were exposed 96 h to different concentrations of the following contaminants: 0.1 and 0.05 mg Cd/L; 0.5, 0.1 and 0.05 mg Pb/L; 0.5, 0.1 and 0.05 mg As/L. Significant decreases in the polysaccharide content were observed in gonadal region for all treated animals. Arsenic and lead at 0.1 and 0.5 mg/L level of exposure were also able to decrease the levels of glycogen in the pulmonary and digestive gland region. Glycogen content in the cephalopedal region of treated animals presented a significant decrease (p<0.05) when compared with control organisms only for arsenic at the highest level of exposure. To establish possible correlations between glycogen and contaminants accumulated by snails, analyses of the elements bioaccumulated in the different anatomical regions of B. glabrata were also performed. Cadmium and lead followed a similar pattern of bioaccumulation with highest values in the digestive gland region. Arsenic bioaccumulation, however, was highest in the gonadal region.