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Query: UMLS:C0032285 (pneumonia)
 54,520 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Studied was a disease course in calves caused by the IBR/IPV virus with symptoms characteristic of vulvovaginitis, respiratory distrubances and keratoconjunctivitis. Concurrent infections of such type were observed primarily in several-month-old calves (aged from 6--7 weeks to 6 months). In older calves (aged 1--2 years) vulvovaginitis predominated, it being more rarely associated with changes typical of pneumonia, and, as an exception accompanied by keratoconjunctivitis. Dairy cows exhibited predominatly the chronic form of vulvovaginitis. Isolated were 16 strains of the IBR/IPV virus showing properties analogous of those of the standard Oxford strain. Demonstrated were specific IBR/IPV antibodies in calves, cows and bulls (from 24.5 up to 50 per cent). The problem is discussed of the correlation between sterility in cows showing the presence of the IBR/IPV virus and the symptoms of vulvovaginits as well as the presence of hypospermia and balanoposthitis in bulls harbouring the virus infection.
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PMID:[Concurrent vulvovaginitis, respiratory syndrome and keratoconjunctivitis in calves]. 16 13

A 61 year old woman died of diffuse interstitial adenovirus pneumonia 55 days after receiving a cadaveric renal allograft. The adenovirus was serologically distinct from the 33 known human adenovirus serotypes and appears to represent a new human adenovirus. Pathologic and virological findings indicate that the pneumonia was only one manifestation of a disseminated infection, the source of which may have been a latent adenovirus infection preexisting in the donor kidney. The establishment of the etiologic diagnosis in this case, which was complicated by the presence of oculocutaneous and esophageal herpes simplex virus infection as well as focal pulmonary aspergillosis, required coordinated histopathologic and virological investigation. Our findings demonstrate that severe viral infections in transplant recipients are not caused exclusively by members of the herpesvirus group.
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PMID:Fatal disseminated adenovirus infection in a renal transplant recipient. 17 Aug 22

The immunofluorescent procedure in examinations of the autopsy material from 304 fatal cases hospitalized for acute pneumonia permitted to diagnose influenza A2 in 29.0%, influenza B in 18.1%, parainfluenza in 3.5%, adenovirus infection in 9.2% and respiratory syncytial virus infection in 3.5% of the cases. In the period of a high incidence of acute respiratory infection, influenza A2 was detected by this method in 40.9% and influenza B in 50% of the cases. Simultaneous examinations of the material in the influenza epidemic period by virological and immunofluorescent methods (63 cases) in 13 cases positive results were obtained with both methods, in 6 cases where influenza viruses were detected the immunofluorescent test was negative, and in 28 cases the positive diagnosis by the immunofluorescent test could not be confirmed virologically. Among the cases examined, 33 were found by the immunofluorescence test to have a mixed respiratory infection, including influenza A2 with other forms of respiratory infection in 18, and influenza B with other respiratory infections in 19 cases. Serological examinations by the complement fixation and hemagglutination inhibition tests on the blood from fatal cases irrespective of the time of examination, as a rule, revealed antibody in low titres which did not confirm the diagnosis.
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PMID:[Immunofluorescent method of studying autopsy material in acute pneumonia]. 19 64

A 51Cr-release cytotoxic assay in vitro was developed to permit definition of the role of local pulmonary cell-mediated immunity in the recovery phase of experimental parainfluenza virus type 3 pneumonia in the Syrian hamster. Cytotoxic effector cells were obtained by bronchalveolar lavage; virus-infected targets were syngeneic secondary hamster kidney cells. Maximal target-cell killing was mediated by lung lavage cells obtained one week after infection; the response waned rapidly thereafter. There was a close temporal correlation between the cytotoxic response and termination of virus replication in the lung. Cytotoxicity was virus specific and was restricted by a requirement for species identity between effector and target cells. Immune spleen cells mediated one-fourth the amount of 51Cr release effected by lung lavage cells, which suggests that cytotoxic effectors were concentrated in the lung. Although the identity of the cytotoxic effector cell was not established conclusively, the characteristics of the response suggested strongly that thymus-derived lymphocytes mediated lysis of target cells. Further work is required to determine the relative importance of this aspect of the host response during recovery from respiratory viral infection.
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PMID:Pulmonary cell-mediated cytotoxicity in hamsters with parainfluenza virus type 3 pneumonia. 22 82

Three children developed extensive extrapulmonary disease in the course of fatal adenovirus type 7 pneumonia. Several clinical features, including the unexpected onset of coma, suggested the development of Reye syndrome, but biochemical and histopathologic findings were inconsistent with this diagnosis. Virologic and pathologic studies did not reveal evidence of extrapulmonary adenovirus infection, despite clinical involvement of the liver, skeletal muscle, and central nervous system. The detection in premortem sera from all three patients of adenovirus penton antigen, known to be cytotoxic in vitro, suggests a possible mechanism for the production of extrapulmonary pathology in the absence of extrapulmonary virus infection.
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PMID:Extrapulmonary manifestations of adenovirus type 7 pneumonia simulating Reye syndrome and the possible role of an adenovirus toxin. 22 59

Various cell cultures were evaluated for their ability to support progressive pneumonia virus infection in vitro. Ovine trachea cells supported progressive pneumonia virus infection for an extended time,were extremely durable and could be passaged up until 30 passages. Progressive pneumonia virus infected ovine trachea cells were then used for the production of antigen for agar-gel immunodiffusion. A method for concentrating antigen, diafiltration, was compared to dialysis against polyethylene glycol. Using diafiltration, the concentrated virus was easily quantitated, less viscous (and therefore easier to apply) and only produced one precipitation line. Agar-gel immunodiffusion was used to survey 401 animals from two sheep flocks. One flock (96 sheep) was free of progressive pneumonia while the other flock had 111 of 305 total animals positive for precipitating antibodies. The incidence of precipitating antibodies in sheep ranged from 23% for yearling ewes to 80% in ewes seven years old.
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PMID:Evaluation of the agar-gel immunodiffusion test for the detection of precipitating antibodies against progressive pneumonia virus of sheep. 22 44

Cytotoxic T cells were detected in the cervical lymph nodes, lungs, spleen, and peripheral blood of mice with influenza. Lymphocytes decreased in the peripheral circulation and increased in the lung during the period of acute inflammation and pneumonia. Peak cytotoxic T-cell activity was present at the time of marked pulmonary infiltration, and it decreased with resolution of the pneumonia. The cytotoxic T cells in the lung were shown to be H-2 restricted and specific for the hemagglutinin of the infecting virus. The results indicate that hemagglutinin specific cytotoxic T cells are (a) induced during influenza infection; (b) they circulate in the blood; (c) they are present in greatest number; and (d) they have their peak cytotoxic effect when pneumonia is most marked. We interpret the results to indicate that specific cytotoxic T cells in the infected target organ are part of the immunological and pathological response to virus infection.
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PMID:Evidence that cytotoxic T cells are part of the host's response to influenza pneumonia. 30 13

Transpleural lavage of lungs from uninfected C3H mice yielded an average of 300,000 leukocytes per mouse. This number increased eightfold within 6 days after intranasal inoculation with virulent influenza A/Hong Kong/68 (H3N2) virus. Macrophages and lymphocytes in approximately equal numbers comprised 90% or more of the leukocytes both before and during infection. B, T, and null lymphocytes comprised, respectively, 9, 21, and 18% of the leukocytes before infection and 7, 26, and 5% by day 6. In absolute numbers, macrophages and T lymphocytes provided the major increments during infection. Cytotoxic activity of mononuclear cells from lung lavages was compared in a chromium release assay using syngeneic L929 target cells with the activity of mediastinal lymph nodes, spleens, and peripheral blood of uninfected and infected C3H mice. Nonspecific cytotoxicity for target cells infected with H3hkNeq1 or B/Lee influenza virus was found with mononuclear cells from uninfected mice. This activity tended to be highest with lavage leukocytes and was associated with adherent cells, presumably macrophages. Increased virus-specific cytotoxicity was detected with lavage cells by day 6 and persisted through day 9, the period of maximal pneumonia. Similar cytotoxic activity also appeared in cells from the nodes and spleen at this same time but was not detected in peripheral blood cells. The virus-specific cytotoxicity of lavage cells was due largely to a nonadherent cell possessing Fc receptors and theta antigen but lacking C3 receptors; these properties are compatible with actively cytotoxic T lymphocytes. The cytological characteristics of the infiltrating leukocytes and the cytotoxicity data suggest that the local T cell response to influenza virus infection in the lung is a major contributor to the pneumonia observed in this mouse model.
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PMID:Cellular changes in lungs of mice infected with influenza virus: characterization of the cytotoxic responses. 31 Apr 24

Three childhood cases of beta-hemolytic streptococcal pneumonia are presented with a review of the literature. The disease, though uncommon in childhood, results in severe local and systemic effects. Hematologic fluid and electrolyte problems are frequent. Pericardial disease and secondary bacterial invasion are added dangers encountered in management. Early and vigorous drainage of the pleural cavity is essential to successful outcome. It appears that predisposing viral disease, including influenza, is essential for acquisition of this form of bacterial pneumonia.
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PMID:Group a beta-hemolytic streptococcal pneumonia: clinical course and complications of management. 33 94

Over a period of 11 years, commencing in December 1967, 31 cardiac transplants, 10 orthotopic and 21 heterotopic, were performed at Groote Schuur Hospital. Two patients with orthotopic transplants have a long survival, 1 for 7 1/2 and 1 for 9 1/2 years, and 1 with a heterotopic transplant for 4 years. Eighteen patients have died, and autopsy was performed from 13 to 623 days postoperatively. Rejection of the donor heart was found in 61,1% and was the cause of death in 44,4% of cases. Infection, attributable to immunosuppression, was a common finding and consisted of extensive pneumonia, usually due to Klebsiella aerogenes and Pseudomonas aeruginosa (38,8%), herpesvirus infection (38,8%), cytomegalic virus infection (37,5%), aspergillosis and other opportunistic infections. A combination of cardiac rejection and infection accounted for most of the deaths. The cardinal microscopic features of acute rejection were interstitial lymphocytic infiltration and myocytolysis, while chronic rejection was typified by obliterative myo-intimal proliferation of coronary arteries, with concurrent lipid deposition in the major coronary arteries. These lesions resembled atherosclerosis and caused graft failure due to myocardial ischaemia. Ultrastructurally, severe myofibre damage was reflected in extensive loss of cytoplasmic myofilaments. The advantages of heterotopic over orthotopic transplantation are discussed.
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PMID:The pathology of human cardiac transplantation: an assessment after 11 years' experience at Groote Schuur Hospital. 39 Jul 37


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