RESUMO
The objective of this study was to heighten physician awareness of eustrongylidiasis by investigating the epidemiology of this parasitic infection. The nematode Eustrongylides ignotus was recovered surgically from our patient, in whom eustrongylidiasis simulated acute appendicitis. The patient had consumed two live minnows obtained from Big Timber Creek of Belmawr, NJ. The authors determined the E ignotus infestation rate of free-living minnows at this creek. With this data, they approximate the probability of human infection with E ignotus after eating live minnows and attempt to evaluate the hypothesis that eating live minnows may lead to eustrongylidiasis.
Assuntos
Abdome Agudo/parasitologia , Apendicite/diagnóstico , Cyprinidae/parasitologia , Dioctophymatoidea/isolamento & purificação , Infecções por Enoplida/diagnóstico , Doenças Transmitidas por Alimentos/parasitologia , Abdome Agudo/cirurgia , Adolescente , Animais , Diagnóstico Diferencial , Infecções por Enoplida/etiologia , Humanos , Laparotomia , MasculinoRESUMO
The effects of endogenous and exogenous opioid substances on feline colonic transit were evaluated using colonic transit scintigraphy. Naloxone (0.3 mg/kg, i.m.) accelerated emptying of the cecum and ascending colon, and filling of the transverse colon. Endogenous opioid peptides thus appear to play a significant role in the regulation of colonic transit. At a moderate dose of morphine (0.1 mg/kg, i.m.), cecum and ascending colon transit was accelerated, while at a larger dose (1.0 mg/kg, i.m.) morphine had no effect. Since naloxone, a relatively nonspecific opioid antagonist, and morphine, a principally mu opioid receptor agonist, both accelerate proximal colonic transit, a decelerating role for at least one of the other opioid receptors is inferred.
