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Query: UMLS:C0012739 (disseminated intravascular coagulation)
 8,673 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Highly immunogenic sublines of L1210 and LSTRA lymphomas were obtained from athymic (nude) mice treated with 4(5)-(3,3-dimethyl-1-triazeno)imidazole-5(4)carboxamide (DIC) in vivo. Conventional mice, compatible with the parent tumor, rejected the DIC-treated sublines and were relatively resistant to a subsequent challenge with the parent lines. The DIC-treated sublines were not rejected by athymic mice, which indicated that the transplantation resistance to these tumors in conventional mice was thymus-cell dependent. In addition, there was marginal or no increase of tumor-cell immunogenicity when the parent lines were passaged in nude mice without DIC treatment. This indicated that the DIC-dependent immunogenic changes in DIC-treated leukemic conventional mice could not be ascribed merely to protection by naturally occurring antigenic clones that resulted from DIC-induced immunodepression.
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PMID:Increased immunogenicity of two lymphoma lines after drug treatment of athymic (nude) mice. 115 15

African swine fever (ASF) is caused by an icosahedral cytoplasmic, double stranded DNA virus. In the acute form of the disease, pigs die from disseminated intravascular coagulation (DIC) with extensive damage of the free and fixed macrophage systems and the reticular epithelial cells of the thymus; mortality is virtually 100%. In recent years, subacute and chronic forms of ASF have become more prevalent in the field, especially in outbreaks occurring outside the continent of Africa, and virus isolated from these outbreaks have often been of lesser virulence. In pigs experimentally infected with such isolates, a number of immunopathological manifestations have been encountered, e.g. hypergammaglobulinemia associated with necrotizing pneumonia, persistent infection in the presence of ASF-specific antibodies, and lack of demonstrable virus neutralizing antibodies. Nevertheless, the immune systems of pigs that have clinically recovered have not been impaired by the infection. We suggest that the heterogeneous composition of the virus population in a given isolate may be one of the causes of the anomalous immune responses. When a number of biological markers, i.e., hemadsorption characteristics, plaque size, infectivity, virulence, antigenic determinants, and genomic structure, were used to characterize the virus clones derived from various ASF virus (ASFV) isolates, considerable heterogeneity was apparent. In the present investigation, 20 monoclonal antibodies (MAb), which specifically identified the 14 kDa viral protein within the cytoplasmic membrane of the infected cells, were used to determine epitopic differences among a number of virus clones derived from various isolates. All of the non-African isolates examined contained two epitopically different groups of virus clones, and the reaction profiles obtained were distinctly different from those obtained with the clones of an African isolate (Tengani). It was concluded that an ASFV isolate is composed of a biologically diverse virus population with distinctly different members which are only identified after cloning.
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PMID:Epitopic diversity of African swine fever virus. 245 66

To try to define the significance of disseminated intravascular coagulation (DIC) in head-injured patients, we correlated clinical, laboratory, and pathological findings in 16 patients with head injury as their main problem who had DIC, who died within 4 days of injury, and who were examined postmortem. Patients were ranked according to the number of abnormal laboratory screening tests for DIC and the severity of these abnormalities. The most frequently abnormal laboratory tests were the fibrinogen degradation products and fibrinogen, followed in order by the activated partial thromboplastin time, prothrombin time, and thrombin time. The platelet count was the least abnormal value. The patients with the fewest abnormalities had the least abnormal computed tomographic scans. Autopsy reports revealed necrosis and bleeding in the brain and in a number of other organs, particularly the lungs. Microthrombi were not reported in the original autopsy reports. However, when these cases were reevaluated and their slides were stained with an immunoperoxidase technique using rabbit anti-human fibrinogen antiserum, microthrombi were seen frequently. Large microthrombi were more common in patients who had died within less than 24 hours, suggesting a relationship to death or to less time for lysis. In order of frequency, the brain/spinal cord, liver, lungs, kidneys, and pancreas were most commonly affected, and the liver, pituitary gland, pancreas, thymus, brain/spinal cord, large intestine, kidneys, and lungs had the greatest density of microthrombi. Pulmonary dysfunction had been a frequent problem in these patients, which may have been related to the high incidence of microthrombi and bleeding found in the lungs.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Clinicopathological correlations of disseminated intravascular coagulation in patients with head injury. 647 92

Adult male Fischer 344 rats received single 30-min exposures to the aerosolized products of polytetrafluoroethylene (PTFE) heated to 595 degrees C. The concentrations of thermal degradation products of PTFE were at the LC50 dose of 0.045 mg/l for most rats, but some rats received doses ranging from 0.005 to 5.025 mg/l. Serial measurements of cardiopulmonary function were obtained and will be published subsequently. Necropsies were performed at 0, 2, 12, 24 and 36 h post-exposure, and a few rats were killed between 2 and 17 days. Signs of respiratory impairment were followed by death in some rats. Pathologic findings included focal hemorrhages, edema and fibrin deposition in the lungs. With time focal interstitial thickenings developed due to hypertrophy and hyperplasia of alveolar cells, and macrophages accumulated in alveoli. Thrombosis of pulmonary capillaries was common. Disseminated intravascular coagulation (DIC) occurred in 53% of test rats; its incidence and severity were positively related to the degree of pulmonary damage. Renal infarcts were common due to DIC. No lesions were seen in kidneys or other tissue (except lung and thymus) unless they were affected with DIC. Thymic lymphocytes underwent necrosis in many test and some vehical (warm air) control rats, possibly due to stress. The finding of DIC in PTFE combustion product exposure has not been reported to our knowledge. The toxicity of the thermal degradation products of PTFE requires further study, especially relative to induction of DIC.
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PMID:Pathologic findings in rats following inhalation of combustion products of polytetrafluoroethylene (PTFE). 682 28

The authors report an unusual case of herpes simplex type 2 (HSV) hepatitis which presented as part of a systemic HSV infection accompanied by disseminated intravascular coagulation (DIC). The patient was a 49-year-old Japanese male who three months prior to admission underwent surgical resection of his thymus for an invasive thymoma. Postoperatively, he received a course of chemotherapy which included prednisone, cyclophosphamide, vincristine, and pinorubicin. After discharge from the hospital, he was put on a maintenance dosage of prednisone and cyclophosphamide. Two weeks prior to this admission, the patient developed rhinorrhea, chills and general fatigue. Routine follow-up laboratory tests revealed markedly elevated liver enzymes which led to his immediate hospitalization. The tentative diagnosis on admission was fulminant hepatitis with DIC. The patient's condition steadily worsened during his hospitalization and acyclovir was initiated on the 4th hospital day due to the possibility of HSV hepatitis. He died on the same day. Histopathology performed on the liver at autopsy revealed hepatic inclusion bodies of HSV with positive immunohistochemical detection of the HSV type 2 antigen. Our case is the first report of HSV hepatitis associated with the removal of the thymus secondary to thymoma. It supports previous observations of disseminated HSV infection being prevalent in those patients with disorders of cell mediated immunity.
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PMID:Fatal herpes simplex hepatitis type 2 in a post-thymectomized adult. 848 19

We report on a female preterm infant of 29 weeks' gestation with severe hydrops fetalis who died 3 days post natum as a result of disseminated intravascular coagulation. Autopsy findings included anasarca, bilateral pleural effusions, ascites and hepatosplenomegaly as well as multiple, up to pinhead sized, white granulomas on the surface of liver, spleen and lungs. Microscopy revealed storage macrophages of the reticuloendothelial system, especially in liver, spleen and bone marrow, the lymphatic organs, the salivary glands, the thyroid gland and the suprarenal medulla. Cerebrum, heart, kidneys, intestines and placenta were not afflicted. Atrophy of the lymphatic compartments in the spleen, lymph nodes and thymus, as well as disorder of the liver texture, are presumably a secondary result. The diagnosis of Farber's disease was established biochemically by the demonstration of ceramide depositions in the spleen, and in fibroblast cultures in situ by the accumulation of ceramide released from loaded radioactive glucosylceramide. Ultrastructurally, corresponding storage lysosomes were found in macrophages. To our knowledge this is the first account of Farber's disease in a preterm infant with hydrops fetalis.
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PMID:[Disseminated lipogranulomatosis (Farber disease) with hydrops fetalis]. 865 Jan 44

In a first experiment, 28 specific pathogen-free chickens aged 3 weeks showed clinical signs 1 to 5 days after intramuscular inoculation with Erysipelothrix rhusiopathiae. Twelve of 28 birds died 2 to 4 days after inoculation. Macroscopically, the liver, spleen and kidneys were seen to be enlarged and congested. Histologically, fibrinous thrombus formation, seen in the hepatic sinusoids, renal glomerular capillaries and small pulmonary blood vessels, was a characteristic feature. In addition, the liver showed marked congestion, increase of mononuclear cells and heterophils in the sinusoids, hyperplasia of sinusoidal lining cells, and vacuolar changes in hepatic cells. The spleen showed fibrinous exudation of the lymphoid follicles and ellipsoids with lymphocytic depletion, and hyperplasia of ellipsoidal reticular cells. There was oedema, congestion and cellular infiltration in the interstitium of the kidney. The bursa of Fabricius and thymus showed marked lymphocytic depletion. In a second experiment, the blood chemical values (uric acid, glutamic-oxalacetic transaminase, lactate dehydrogenase and gamma-glutamyl transpeptidase) of birds inoculated intramuscularly with E. rhusiopathiae were significantly higher than those of uninfected controls. The blood prothrombin times and activated partial thromboplastin times of the inoculated group were significantly greater than those of the control group. The pathological and haematological findings demonstrated that E. rhusiopathiae induced disseminated intravascular coagulation in the chickens.
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PMID:Disseminated intravascular coagulation in chickens inoculated with Erysipelothrix rhusiopathiae. 935 39

UR-12670 is a novel and potent PAF antagonist, eg., it displaces [3H]WEB-2086 from PAF receptors in rabbit platelet membranes (Ki = 0.6 nM) and inhibits PAF-induced increase in vascular permeability in rat trachea (100%), thymus (44%), seminal vesicles (100%) and stomach (54%) at a dose of 0.01 mg/kg i.v. Since PAF is thought to be an important mediator in endotoxic shock, the effect of pretreatment with UR-12670 on changes in vascular permeability, disseminated intravascular coagulation (DIC) and plasma biochemical parameters were determined in a rat model of acute endotoxemia. UR-12670 and the reference PAF antagonist, lexipafant (10 mg/kg i.v.), strongly inhibited lipopolysaccharide (LPS, 25 mg/kg i.v.)-induced plasma leakage in the trachea (49 and 100%, respectively) and seminal vesicles (81 and 100%), as assessed by the Evans blue extravasation method. Only lexipafant inhibited the increase in vascular permeability in the thymus (36%). Neither PAF antagonist was effective in the stomach. Both UR-12670 and lexipafant at 10 mg/kg i.v. attenuated the LPS-induced variation of some DIC markers, such as activated partial thromboplastin time increase (56 and 58%, respectively) and the fibrinogen concentration decrease (53 and 31%), whereas the increase in prothrombin time was not affected. Increased plasma acid phosphatase (ACP, a lysosomal activation marker) and lactate dehydrogenase (LDH, a tissue damage marker) activity elicited by LPS was attenuated by pretreatment with 10 mg/kg i.v. of either UR-12670 or lexipafant (ACP: 55 and 48%; LDH: 50 and 33%). LPS-induced hyperglycemia (46 and 37%) and hyperlactacidemia (100% both) were also inhibited. UR-12670 protected against several shock symptoms, confirming the role of PAF in the pathogenesis of rodent endotoxemia.
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PMID:Effects of a new platelet-activating factor antagonist, UR-12670, on several endotoxic shock markers in rats. 951 29

To delineate the interactions between rabbit hemorrhagic disease virus (RHDV) and host cells, organ and cellular targets of infection were identified in vivo. Viral specific antigens were detected by immunohistochemistry in liver, lung, spleen and lymph nodes cells. Also, intravascular infected cells were detected in most organs including kidneys, myocardium, thymus and central nervous system. To further characterize infected target cells, viral proteins and cell-specific surface antigens were identified simultaneously in double labeling experiments. Numerous lymphoid organ macrophages, from the splenic red pulp, circulating monocytes, alveolar macrophages and Kupffer cells were double labeled, demonstrating that cells of the mononuclear phagocyte lineage are major hosts for RHDV. Double labeling for other specific cell markers were negative. The distribution of viral antigens in these tissues coincided with those areas where cells presented morphology of apoptosis. Association of intravascular monocyte infection and apoptosis, could represent a possible mechanism to develop disseminated intravascular coagulation.
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PMID:Macrophage tropism of rabbit hemorrhagic disease virus is associated with vascular pathology. 1022 71

We present a casuistic revision of adrenal pathology, which was studied in our service during the period January 1977-July 2000. We reviewed 59.069 biopsies and 2.674 autopsies and we 84 cases. founded with the following findings: Primary tumors 25% Secundary tumors 51% Infectious diseases 11% Miscellaneous 12% Unsuitable for diagnosis 1% Hyperplasias, adenomas, pheochromocy-tomas, neuroblastoma, adenocarcinoma are included within primary tumors. The metastasic tumors corresponded to: lung, pancreas, mammary gland, kidney and carcinomas; endometrial adenocarcinoma, lymphoma, melanoma, hepatocarcinoma, gastric carcinoma, testicular teratocarcinoma, skin epidermoid carcinoma, uterus choriocarcinoma and a primary germinal tumor of the thymus. Within infectious diseases we founded tuberculosis, histoplasmosis, cryptococosis, hydatidosis. Miscellaneous included hematoma, hemorrhage, pseudocyst, Disseminated Intravascular Coagulation (DIC), athrophy, Wegener's granulomatosis, myelolipoma, hemorrhagic necrosis. There was only one case which was unsuitable for diagnosis due to insufficient material.
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PMID:[Casuistic revision of adrenal pathology during last 23 years]. 1293 68


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