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The authors reviewed the literature on predominantly eosinophilic inflammatory infiltrations of the bowel wall. Epidemiologic, pathologic and etiologic aspects are first presented, followed by specific clinical problems, radiology, endoscopy and treatment of this unusual illness.
In order to protect granulopenic patients against infections by pathogens from their own digestive tract, large amounts of lactobacilli were given to 5 patients whose intestinal flora had been suppressed by oral antibiotics. In all these cases, lactobacilli failed to prevent spontaneous recolonization of the gastrointestinal tract by enteric bacteria. Six attempts of colonization were made; in spite of the importance of the inoculum administered orally, large numbers of lactobacilli were recovered from stools in only two cases.
Of more than 400 bacteria isolated from turbot (Scophthalmus maximus), 89 have previously been shown to inhibit the in vitro growth of the fish pathogen Vibrio anguillarum. The aim of the present study was to investigate the potential of seven of these strains, as well as of intestinal isolates (four strains) from a closely related fish, dab (Limanda limanda), for colonizing farmed turbot as a means of protecting the host from infection by V. anguillarum. In addition, the inhibitory effect of these strains on the pathogen was further studied. Colonization potential was measured by the capacity of the strains to adhere to and grow in turbot intestinal mucus. These parameters were also used to investigate the potential of V. anguillarum to amplify in the turbot intestinal tract. Because of the observed rapid growth of V. anguillarum in intestinal mucus, it can be proposed that the intestinal tract is a site for V. anguillarum multiplication. Strains isolated from the intestine showed greater capacity for adhesion to and growth in fish intestinal mucus than did the pathogen and the skin mucus isolates. All of the isolates released metabolites into the culture medium that had inhibitory effects against V. anguillarum. The results are discussed with emphasis on administering bacteria of host origin to farmed turbot in order to control V. anguillarum-induced disease.
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Thirty-three cases of gas gangrene infections originating from the small bowel, colon, and rectum are reviewed. The distinction between localized and diffuse, spreading, types of infection is made. The overall mortality rate was 42.4% and mortality was highest for infections following elective bowel resections. Treatment consisted of antibiotics and surgical debridement, with hyperbaric oxygen used as adjunctive therapy for the more serious cases. The importance of early recognition of clostridial infection is stressed as the key to improved survival.
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Acquired immunodeficiency syndrome (AIDS) is initiated by the attachment of the human immunodeficiency virus (HIV) to specific target cells. An octapeptide sequence contained within the envelope of HIV, peptide T, mediates the viral binding. Since there is a considerable structural homology between peptide T and VIP, it has been proposed that the VIP receptor may be the naturally occurring protein which provides the corresponding cellular attachment site. In three different models (rat intestinal epithelial cell membranes, rat liver plasma membranes and human colonic cells), we document the lack of interaction between peptide T and the VIP receptor. These observations would also exclude any pathophysiologic effect caused by the crossreactivity of peptide T or its analogues and these VIP receptors.
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