Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0021843 (bowel obstruction)
 9,927 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This investigation was based on an epidemiologic association of milk consumption and decreased intestinal cancer risk. Furthermore, there is also some indirect evidence that calcium supplementation in humans and animals may decrease colon cancer risk and that calcium, by inference, may be the protective factor in milk. In order to investigate these associations in a controlled laboratory setting, dietary supplementation of low fat dried milk (37 g/kg diet; N = 18) and calcium carbonate (40 mg/kg rat/day; N = 17) were compared separately to regular diet controls in the rat-dimethylhydrazine colon carcinogenesis model. The results of this investigation showed that neither milk-supplemented rats nor calcium carbonate-supplemented rats had fewer DMH-induced colorectal (P = .374) or total gastrointestinal tumors (P = .291) than did regular diet controls (N = 10; by analysis of variance [ANOVA]). Milk supplementation did result in a significant decrease in tumor burden when measured by incidence of metastases (P = .035) and of intestinal obstruction (P = .011; by chi-square test), when compared with calcium-supplemented and control rats. Though this implies that milk supplementation provides protection against some aspects of carcinogenesis of the colon, in rats fed low fat diets, this does not appear to be mediated through the calcium content of milk.
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PMID:The effect of dietary milk and calcium on experimental colorectal carcinogenesis. 369 Dec 67

Bacterial translocation in humans has been identified only with small bowel obstruction and in trauma patients. Our aim was to determine whether the occurrence of bacterial translocation correlates with clinical outcome in trauma patients. All patients requiring exploratory celiotomy for abdominal trauma over a 2-month period were considered for the study. Gross fecal contamination of the abdomen was the only exclusion criterion. Five patients with small bowel injuries without obvious contamination were included. Patients received preoperative antibiotics. Once surgical hemostasis and injury repair were complete, two mesenteric lymph nodes were harvested--one for quantitative culture, the other for electron microscopic evaluation. Postoperatively, patients were monitored for infection via temperature, white blood cell (WBC) count, and, when indicated, chest X-ray (CXR) and culture. Statistical analysis utilized ANOVA (P < 0.05 significant) and linear regression. Sixteen patients were included in the study. Fifteen patients sustained penetrating abdominal trauma, one blunt. Six patients presented in Class I hemorrhagic shock, four in Class II, and two in Class III. The remaining four were not in hemorrhagic shock. Thirteen patients demonstrated bacterial translocation: one by culture alone, nine by electron microscopy, and three by both culture and electron microscopy. Statistical analysis of these three groups and patients without evidence of infection failed to reveal significant difference in average age, injury severity, hospital days, or incidence of postoperative infection. Bacterial translocation occurs following abdominal trauma in humans. Electron microscopic evaluation of mesenteric lymph nodes demonstrated that the incidence of translocation is greater than anticipated by culture alone.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Bacterial translocation following abdominal trauma in humans. 814 4

The diagnosis of necrotizing enterocolitis (NEC) is made from a combination of clinical and radiographic findings. There are no useful screening biochemical markers of intestinal injury. The serum concentration of cytosolic beta-glucosidase (CBG), an enzyme found primarily in enterocytes, is markedly elevated in animal models of ischemia and bowel obstruction. We hypothesized that in a rat model of NEC, serum CBG activity would significantly increase before microscopic evidence of severe intestinal injury. Cohorts of 2-wk-old Sprague-Dawley rats (n = 10/cohort) were anesthetized and underwent laparotomy with occlusion of the superior mesenteric artery (SMA). Platelet-activating factor (200 microg/animal) was injected in the proximal duodenum. Serum and intestinal samples were obtained at time 0 (control) and 30, 60, and 90 min of ischemia (I) and after 90 min of I followed by 60 min of reperfusion (I/R). Histopathologic injury was categorized as either no or minimal injury or mural necrosis by two masked investigators and CBG activity was measured by ELISA. Data were analyzed with Fisher's exact test and ANOVA. Only the I/R group had significantly greater mural necrosis compared with the control group (90% versus 0%, respectively, p < 0.001). In contrast, CBG activity was significantly elevated after only 90 min of I and after I/R (15.1 +/- 5.6 and 16.4 +/- 4.3 units/mL, respectively, p < 0.05). We conclude that serum CBG is elevated before transmural intestinal injury in this model and may have utility as an early marker of ischemia in patients at risk for NEC.
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PMID:Serum cytosolic beta-glucosidase activity in a rat model of necrotizing enterocolitis. 1286 98