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  • 1
    ISSN: 1432-1440
    Schlagwort(e): Cytomegalovirus ; Procaryotic expression ; Recombinant antigen ; Phosphorylated protein pp150 ; Monoclonal antibody ; Immunofluorescence ; Immunohistochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Procedures for diagnostics of cytomegalovirus infections include histopathology, cell culture, serology, and direct detection of viral antigens or nucleic acids within infected cells or tissues. In order to develop a new diagnostic reagent for viral antigen detection, we generated a mouse monoclonal antibody. This antibody was raised against a recombinant antigen representing part of the large phosphorylated structural protein pp150 of human cytomegalovirus. The monoclonal antibody was shown to be useful for antigen detection by immunofluorescence and immunoenzymatic staining in infected cells from cell culture as well as from infected organs. The antibody proved to be reactive even in paraffin-embedded sections from tissue specimens.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Monatsschrift Kinderheilkunde 145 (1997), S. 619-625 
    ISSN: 1433-0474
    Schlagwort(e): Schlüsselwörter Zytomegalieviren ; Frühgeborene ; Muttermilch ; Postnatale Infektion ; Symptome ; Key words Cytomegalovirus ; Preterm infants ; Postnatal infection ; Breast milk ; Clinical course
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Summary Background: After elimination of CMV transmission by blood products we have still observed preterm infants with postnatally acquired CMV infections. 16 preterm infants with CMV infection by breast milk were identified. Methods: CMV-DNA PCR and viral cultures. Criteria of transmission: CMV in breast milk; viruria in preterm infants; exclusions of congenital infection, of donor's breast milk and of CMV seropositive blood transfusions. Results: 8 infants (50 %) had marked symptoms of an acute CMV infection: sepsis-like symptoms with apnoea and bradycardia (4), cholestasis/hepatitis (4/2), thrombocytopenia (6), neutropenia (5). Infection in the latter group occurred at an median postnatal age of 46 vs. 62 days in asymptomatic infected infants (p 〈 0.01). Conclusion: There is a high incidence of symptomatic CMV infections in preterm infants due to breast milk transmission. An early postnatal CMV infection seems to be associated with a symptomatic clinical course.
    Notizen: Zusammenfassung In einem Zeitraum von 20 Monaten wurden bei 16 Frühgeborenen (Geburtsgewicht 500–1870 g) während des stationären Aufenthalts CMV-Infektionen über die Muttermilch nachgewiesen. Die klinischen Verläufe dieser Kinder werden berichtet. Methode: CMV-DNA-PCR und Viruskultur aus Urin und Muttermilch, CMV-Serologie von Kind und Mutter. Transmissionskriterien: Erstmalige CMV-Exkretion im Urin jenseits der 4. Woche post partum; Nachweis von CMV in der Muttermilch der gesunden Mütter; Ausschluß einer kongenitalen CMV-Infektion; ausschließliche Gabe von Blutprodukten CMV-seronegativer Spender. Ergebnisse: 8 Frühgeborene (50 %) hatten Symptome einer CMV-Infektion: Sepsisartiger Verlauf mit Apnoen und Bradykardien (4), Cholestase/Hepatitis (4/2), Thrombozytopenie (6), Granulozytopenie (5). Der Infektionszeitpunkt war bei den symptomatisch infizierten Kinder früher als bei den asymptomatischen. Schlußfolgerungen: Über die Muttermilch akquirierte CMV-Infektionen müssen bei Frühgeborenen berücksichtigt werden. Frühe postnatale Infektionen gehen häufig mit Symptomen einher.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1432-2307
    Schlagwort(e): Cytomegalovirus ; Congenital cytomegalic inclusion disease ; Placenta ; Chorionic villi ; Immuno histochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Chronic villitis is almost always present in intrauterine infection with human cytomegalovirus (HCMV). The inflammatory response to this virus has been described in detail. However, little is known about the types of placental cells that may be infected by HCMV and six cases of HCMV placentitis were thus investigated to identify the vulnerable cell types. Immunohistochemical double staining analyses were performed using antibodies to HCMV immediate early antigens and to specific cellular marker proteins. Fixed connective tissue cells could be demonstrated to be the predominantly infected cell type in each placental tissue. Endothelial cells and macrophages were also found to be infected in all six cases, whereas evidence of trophoblast infection was obtained in four cases. It is concluded that release of infectious virus by connective tissue cells, macrophages and endothelial cells may play a critical role in transplacental transmission of HCMV. The findings further suggest that the cytopathic effect of HCMV infection on these cells might be involved in the pathogenesis of intrauterine HCMV disease.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1432-1459
    Schlagwort(e): Cytomegalovirus ; Acquired immunodeficiency syndrome ; Recombinant phosphoprotein (pp150) ; Intrathecal antibody synthesis ; Polymerase chain reaction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We evaluated 49 paired cerebrospinal fluid (CSF) and serum samples of 35 patients infected with the human immunodeficiency virus type 1 (HIV-1) for laboratory evidence of cytomegalovirus (CMV) infection. The patients were grouped according to clinical criteria as probable CMV encephalitis/polyradiculomyelitis, CMV retinitis, cerebral toxoplasmosis, progressive multifocal leukoencephalopathy, HIV-1-related cognitive/motor complex, HIV-1-associated myelopathy, and other neurological diseases. Paired CSF and serum samples were analysed for CMV deoxyribonucleic acid (DNA) by polymerase chain reaction (PCR), quantitative intrathecal synthesis of immunoglobulin G (IgG) antibodies specific for recombinant phosphoprotein 150 (pp150) of CMV and CMV-specific serum IgM. Intrathecal synthesis of pp150-specific IgG was detected in 26% of patients (9/35), serum IgM was found in 23% of patients (8/35), and PCR of CSF was positive in 11% of patients (4/35). Detection of CMV-specific DNA in CSF preceded the intrathecal antibody synthesis in three patients for whom serial samples were available. PCR results of the CSF became negative in one patient with CMV polyradiculomyelitis after successful therapy with 9-[2-hydroxy-l(hydroxymethyl) ethoxymethyl] guanine (DHPG). PCR has a higher diagnostic specificity in the acute phase of CMV infection than intrathecal antibody synthesis. The serum IgM response to CMV cannot be used to monitor a compartmentalized immune response in the central nervous system while an intrathecal immune response seems to be associated with recovery either spontaneously or as a result of treatment.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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