RESUMEN
A 42-year-old man had nausea, vomiting, periumbilical pain, tenesmus, and diarrhea shortly after eating seafood. Stool microscopy showed "beaver bodies," or Psorospermium haeckelii, a nonpathogenic algal organism often confused with enteric pathogens and commonly found in the excrement of persons consuming crayfish.
Asunto(s)
Astacoidea , Eucariontes , Intoxicación por Mariscos , Adulto , Animales , Heces/microbiología , Enfermedades Transmitidas por los Alimentos/diagnóstico , Humanos , Masculino , Enfermedades Parasitarias/diagnósticoRESUMEN
We examined stool samples from travelers for secretory immunoglobulin A (sIgA) to enteroaggregative Escherichia coli (EAEC) during episodes of acute diarrhea. Ten paired samples from 10 patients with diarrhea caused by EAEC were examined for the presence of specific sIgA by dot blot and Western blot immunoassays. Five samples were positive by dot blotting, and two samples were positive by Western blotting.
Asunto(s)
Diarrea/diagnóstico , Infecciones por Escherichia coli/diagnóstico , Inmunoglobulina A/análisis , Adulto , Antígenos Bacterianos/análisis , Antígenos Bacterianos/inmunología , Western Blotting , Enfermedad Crónica , Diarrea/inmunología , Infecciones por Escherichia coli/inmunología , Heces/microbiología , Humanos , Immunoblotting , Intestinos/inmunología , México , ViajeRESUMEN
As part of a traveler's diarrhea study carried out in Guadalajara, Mexico, and Goa, India, we conducted a case control study to evaluate fecal markers of enteric inflammation in three groups. Forty-five cases of enteroaggregative Escherichia coli (EAEC) diarrhea were compared to 56 controls with enterotoxigenic E. coli (ETEC) diarrhea, and 126 controls with diarrhea without identifiable pathogens. For EAEC cases we found fecal leukocytes, occult blood, and lactoferrin in 13 (28.9%), 14 (31.1%), and 27 (60.0%) patients, respectively; for ETEC controls they were 15 (26.8%), 16 (28.6%), and 15 (26.8%) respectively; and for patients without identifiable pathogens 19 (15.1%), 34 (27.0%) and 27 (21.4%) were seen for the presence of a positive fecal lactoferrin test in EAEC cases was statistically significant compared to both control groups. The study provides evidence that EAEC infection is associated with an intestinal inflammatory response.