Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0017160 (gastroenteritis)
 11,398 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

1. Bolesatine is a toxic protein (LD50 oral 3.3 mg/kg in mice) isolated from the mushroom Boletus satanas Lenz, which inhibits protein synthesis in vitro. It induces gastroenteritis in human. 2. 14C-Bolesatine, given orally to rats (30 micrograms/kg), is distributed in the gastrointestinal, tract, kidney, liver and, to a lesser extent, in the thymus, spleen and lung. Bolesatine is eliminated in faeces and urine (80% in 24h). 3. The material excreted in urine is not proteolysed, and no protease (trypsin, chymotrypsin, pronase, proteinase K, Staphylococcus aureus (strain V8) protease and pepsin) is found to hydrolyse bolesatine in either its native or denatured form. However, thermolysin hydrolysed denatured bolesatine to a protein having a Mr of about 55 kD. 4. Bolesatine is found in all the following rat liver and kidney subcellular fractions: cytoplasm, mitochondria, ribosomes, microsomes and nuclei.
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PMID:Disposition of the toxic protein, bolesatine, in rats: its resistance to proteolytic enzymes. 200 68

The nature of antigens in enteropathogenic animal viruses--coronavirus--an agent of transmissive gastroenteritis of pigs (TGE) and pig enterovirus of serotype VI was studied. Basing on the results of the histomorphometric study of the white spleen pulp under the individual introduction of viruses and in combination with the lymphoid chalone it was established that the developing immune response has a thymus-dependent induction mechanism. The pharmacological stimulation of the T-system of animals suffering from virus gastroenteritis provides a positive therapeutic effect. The selective stimulation of the animal T-system may be considered as a promising trend in therapy of intestinal infections and as one of the possible ways to increase the immune response to the antigens of viral vaccines.
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PMID:[Thymus-dependent nature of the antigens of enteropathogenic viruses]. 254 35

The effect of T-2 toxin on cell-mediated resistance to bacterial infection was evaluated in mice challenge exposed with Listeria monocytogenes. Mice were treated orally on days -5, -4, -3, -2, -1, +1, and +3 with 2.0, 1.0, 0.5, or 0 mg of T-2 toxin/kg of body weight and were exposed to 10(6) (LD100) or 10(5) (LD50) L monocytogenes by intraperitoneal injection on day 0. Necrosis and depletion of lymphocytes in the thymus and spleen, decrease in thymus weight, reductions in the number of circulating total leukocytes and lymphocytes, and necrotizing gastroenteritis occurred in the toxin-treated mice. Although the cytotoxic effect of T-2 toxin on lymphoid tissue was marked, enhanced resistance to Listeria infection was revealed by significant (P less than 0.01) decreases in mortality caused by listeriosis in the toxin-treated mice. Mortality decreased from 100% to 64% in the mice exposed to 10(6) Listeria and from 50% to 20% in the mice exposed to 10(5) Listeria. Percentage of mortality after Listeria challenge exposure was dependent on the T-2 toxin dose and was progressively decreased in the mice given 0.5, 1.0, or 2.0 mg of toxin/kg.
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PMID:Enhanced resistance to listeriosis induced in mice by preinoculation treatment with T-2 mycotoxin. 308 36

Peripheral blood lymphocytes, intraepithelial lymphocytes from the small intestine and lymphocytes from the thymus, spleen, mesenteric lymph nodes and Peyer's patches from 5 young adult pigs were used as effector cells in a spontaneous cell-mediated cytotoxicity chromium release assay against PK-15 cells persistently infected with transmissible gastroenteritis virus as targets. Both peripheral blood and intraepithelial lymphocytes caused marked specific chromium release, while the lymphocytes from the remaining tissues were inactive in spontaneous cell-mediated cytotoxicity.
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PMID:The tissue distribution of spontaneous cell-mediated cytotoxicity effector lymphocytes in swine. 372 77

Bolesatine is a glycoprotein purified to homogeneity from Boletus satanas Lenz, a toxic mushroom which causes serious gastroenteritis. This lectin possesses a mitogenic activity on human lymphocytes at very low concentrations, whereas higher concentrations inhibit protein synthesis in vitro in several systems. The mitogenic activity on peripheral blood T lymphocytes in vitro has been shown to be at least 200-fold higher than the activity of the well studied phytohemagglutinin (PHA). In order to verify this property in vivo, the effect of bolesatine has been studied in thymus of rats given orally bolesatine. Two groups of bolesatine-treated animals were used in addition to the control group. One group was given every 48 h, 28 micrograms of bolesatine/kg body weight seven times and 150 micrograms/kg body weight 48 h before the sacrifice. The other group was given 55 micrograms of bolesatine/kg body weight according to the same protocol and 150 micrograms/kg body weight 48 h before the sacrifice. In these conditions, the ratio thymus weight/body weight is increased by 10% and 28%, respectively, in groups 1 and 2. Similarly, the DNA synthesis is increased by more than 50%, indicating that (i) bolesatine probably possesses a mitogenic effect on thymocytes in vivo (ii) that the increase of the ratio thymus weight/body weight is not due to swelling by water retention, but rather to a multiplication of thymocytes. These results are confirmed in a second run of experiments in which bolesatine given orally to rats in lower doses of 3-12 micrograms/kg induces an increase of both thymus weight by 47% to 54% and an increase of total proteins by 52% to 56%, respectively, whereas the ratio total protein/g of thymus does not change. Thus bolesatine, known to be mitogenic to human lymphocytes in vitro is also mitogenic to rat thymocytes in vivo.
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PMID:Effect of bolesatine, a glycoprotein from Boletus satanas, on rat thymus in vivo. 819 88

The LD(50) +/- S.E. of tannic acid given orally to albino rats was found to be 2.26+/-0.083 g. per kg. body weight, which is higher than its apparent LD(50) when given per rectum. The immediate cause of death was respiratory failure preceded by convulsions when death occurred early and by hypothermic cachexia when death was delayed. Death was associated with a progressively developing hepatic necrosis and nephritis and a temporary acute gastroenteritis. It was accompanied by loss of weight and edema in many organs, evidence of stimulation of the spleen, adrenal cortex and testes, and atrophy of the thymus. Recovery in survivors was associated with a temporary increase in weight of the spleen and testes and persistence of loss of weight in the adrenal, pyloric stomach, and skin.
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PMID:THE ACUTE TOXICITY OF TANNIC ACID ADMINISTERED INTRAGASTRICALLY. 1429 58

Rotaviruses infect mature, differentiated enterocytes of the small intestine and, by an unknown mechanism, escape the gastrointestinal tract and cause viremia. The neonatal rat model of rotavirus infection was used to determine the kinetics of viremia, spread, and pathology of rotavirus in extraintestinal organs. Five-day-old rat pups were inoculated intragastrically with an animal (RRV) or human (HAL1166) rotavirus or phosphate-buffered saline. Blood was collected from a subset of rat pups, and following perfusion to remove residual blood, organs were removed and homogenized to analyze rotavirus-specific antigen by enzyme-linked immunosorbent assay and infectious rotavirus by fluorescent focus assay or fixed in formalin for histology and immunohistochemistry. Viremia was detected following rotavirus infection with RRV and HAL1166. The RRV 50% antigenemia dose was 1.8 x 10(3) PFU, and the 50% diarrhea dose was 7.7 x 10(5) PFU, indicating that infection and viremia occurred in the absence of diarrhea and that detecting rotavirus antigen in the blood was a more sensitive measure of infection than diarrhea. Rotavirus antigens and infectious virus were detected in multiple organs (stomach, intestines, liver, lungs, spleen, kidneys, pancreas, thymus, and bladder). Histopathological changes due to rotavirus infection included acute inflammation of the portal tract and bile duct, microsteatosis, necrosis, and inflammatory cell infiltrates in the parenchymas of the liver and lungs. Colocalization of structural and nonstructural proteins with histopathology in the liver and lungs indicated that the histological changes observed were due to rotavirus infection and replication. Replicating rotavirus was also detected in macrophages in the lungs and blood vessels, indicating a possible mechanism of rotavirus dissemination. Extraintestinal infectious rotavirus, but not diarrhea, was observed in the presence of passively or actively acquired rotavirus-specific antibody. These findings alter the previously accepted concept of rotavirus pathogenesis to include not only gastroenteritis but also viremia, and they indicate that rotavirus could cause a broad array of systemic diseases in a number of different organs.
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PMID:Rotavirus viremia and extraintestinal viral infection in the neonatal rat model. 1664 Dec 74

Campylobacter are known to cause acute bacterial gastroenteritis in humans. Poultry products have been implicated as a significant source of these infections. Six experiments were performed to determine whether Campylobacter could be isolated naturally from the primary and secondary lymphoid organs, liver/gallbladder, and ceca of commercial broiler breeder hens. Broiler breeder hens were acquired from different commercial sources during the early, middle, and late lay cycles. The birds were euthanatized, defeathered, and aseptically opened. To reduce the possibility of cross-contamination between samples, the thymus, spleen, and liver/gallbladder were aseptically removed prior to removal of the ceca. Individual samples were placed in sterile bags, packed on ice, and transported to the laboratory for evaluation. In this study Campylobacter were found in 11 of 43 thymii, eight of 43 spleens, four of 43 liver/gallbladders, and 30 of 43 ceca. Overall, 28 of 53 isolates from the above samples were Campylobacter coli and 25 of 53 isolates were found to be Campylobacter jejuni.
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PMID:Natural presence of Campylobacter spp. in various internal organs of commercial broiler breeder hens. 1703 49