RESUMO
We report herein a unique cause of duodenal obstruction secondary to expansion of an abdominal aortic aneurysm in a 75-year-old man with congenital malrotation of the intestines. The duodenum was found to be compressed between the abdominal aortic aneurysm inferiorly and the peritoneal band superiorly. The patient underwent uncomplicated lysis of peritoneal bands relieving the duodenal obstruction, followed by repair of the abdominal aortic aneurysm.
Assuntos
Aneurisma da Aorta Abdominal/complicações , Obstrução Duodenal/etiologia , Intestinos/anormalidades , Situs Inversus/complicações , Dor Abdominal/etiologia , Idoso , Aneurisma da Aorta Abdominal/diagnóstico , Aneurisma da Aorta Abdominal/cirurgia , Obstrução Duodenal/diagnóstico , Obstrução Duodenal/cirurgia , Humanos , Masculino , Náusea/etiologia , Resultado do Tratamento , Vômito/etiologiaRESUMO
The bacterium Helicobacter pylori is the causative agent for peptic ulcer disease. Bacterial adherence to the human gastric epithelial lining is mediated by the fucosylated Lewis b (Leb) histo-blood group antigen. The Leb-binding adhesin, BabA, was purified by receptor activity-directed affinity tagging. The bacterial Leb-binding phenotype was associated with the presence of the cag pathogenicity island among clinical isolates of H. pylori. A vaccine strategy based on the BabA adhesin might serve as a means to target the virulent type I strains of H. pylori.
Assuntos
Adesinas Bacterianas/isolamento & purificação , Antígenos de Bactérias , Helicobacter pylori/metabolismo , Antígenos do Grupo Sanguíneo de Lewis/metabolismo , Adesinas Bacterianas/química , Adesinas Bacterianas/genética , Adesinas Bacterianas/metabolismo , Sequência de Aminoácidos , Aderência Bacteriana , Proteínas de Bactérias/genética , Proteínas de Bactérias/fisiologia , Composição de Bases , Sequência de Bases , Biotinilação , Membrana Celular/química , Clonagem Molecular , Códon de Iniciação , Fucose , Mucosa Gástrica/microbiologia , Genes Bacterianos , Glicoconjugados/metabolismo , Helicobacter pylori/isolamento & purificação , Helicobacter pylori/patogenicidade , Humanos , Ligantes , Dados de Sequência Molecular , VirulênciaRESUMO
Samples of particles from Mount St. Helens were collected in both the stratosphere and troposphere for measurement of the light absorption coefficient. Results indicate that the stratospheric dust had a small but finite absorption coefficient ranging up to 2 x 10(-7) per meter at a wavelength of 0.55 micrometer, which is estimated to yield an albedo for single scatter of 0.98 or greater. Tropospheric results showed similar high values of an albedo for single scatter.