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Detection of human respiratory DNA viruses in the respiratory tract samples of immunocompromissed patients.
Blagoevová, Kateřina ; Hubáček, Petr (advisor) ; Hirsch, Ivan (referee)
Respiratory tract diseases are of the most common infectious diseases among both children and adult population all over the world. Viruses are the most frequent cause of respiratory diseases. In healthy immunocompetent individuals respiratory infection proceeds mostly without major complications. Immunocompromissed hosts, for example patients after transplatation, are more susceptible to infection and even common infection may be life threatening for them. Human polyomaviruses KI (KIPyV) and WU (WUPyV) and human bocavirus (HBoV) are most frequently detected in the respiratory tract of patients with acute respiratory tract infection primarily in children and in immunosuppressed patients. However, clear causative link between presence of these viruses and the respiratory disease has not been established. In this retrospective study were tested by quantitative real-time PCR 822 (745 from adults and 77 from children) respiratory samples from 380 immunocompromissed patients included 326 adults and 54 children. Viruses were also detected in the 84 peripheral blood samples. The most frequently detected virus was HBoV (6,32 % positive pacients), followed by KIPyV (5,79 % positive pacients) and WUPyV (0, 53 % positive patients). Only HBoV was detected in blood samples. The study confirmed the presence of KI...
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Seroprevalence of polyomaviruses in human
Blagoevová, Kateřina ; Drda Morávková, Alena (advisor) ; Kuthan, Martin (referee)
Human BK polyomavirus, also known as Polyomavirus hominis type 1, is a small animal tumorigenic virus. It penetrates into the host cell by caveolin-mediated endocytosis and then through the ER pathway to get into the nucleus where the virus replicates and expresses viral proteins. BKV primary infection typically occurs during childhood and id mostly asymptomatic, it is only occasionally accompanied by mild respiratory or urinary tract illnesses associated with viruria. After primary infection the virus occurs mainly in the kidney and urinary tract and in immunocompetent individuals remains in nonreplicative state. Healthy individuals have no health problems and it persists as a lifelong infection. In immunosuppressed individuals, particularly renal and bone marrow transplant patients, causing virurie, viremia, ureteral stenosis and serious nephropathy, this can lead to graft failure. The prevalence of this virus in the world is significant, scientific publications indicate that up to 80% of the human population has specific antibodies. Any small amounts of the virus prevalence reported in some publications are probably caused by using various sensitive detection methods and different types of samples.
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Detection of human respiratory DNA viruses in the respiratory tract samples of immunocompromissed patients.
Blagoevová, Kateřina ; Hubáček, Petr (advisor) ; Hirsch, Ivan (referee)
Respiratory tract diseases are of the most common infectious diseases among both children and adult population all over the world. Viruses are the most frequent cause of respiratory diseases. In healthy immunocompetent individuals respiratory infection proceeds mostly without major complications. Immunocompromissed hosts, for example patients after transplatation, are more susceptible to infection and even common infection may be life threatening for them. Human polyomaviruses KI (KIPyV) and WU (WUPyV) and human bocavirus (HBoV) are most frequently detected in the respiratory tract of patients with acute respiratory tract infection primarily in children and in immunosuppressed patients. However, clear causative link between presence of these viruses and the respiratory disease has not been established. In this retrospective study were tested by quantitative real-time PCR 822 (745 from adults and 77 from children) respiratory samples from 380 immunocompromissed patients included 326 adults and 54 children. Viruses were also detected in the 84 peripheral blood samples. The most frequently detected virus was HBoV (6,32 % positive pacients), followed by KIPyV (5,79 % positive pacients) and WUPyV (0, 53 % positive patients). Only HBoV was detected in blood samples. The study confirmed the presence of KI...
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Seroprevalence of polyomaviruses in human
Blagoevová, Kateřina ; Drda Morávková, Alena (advisor) ; Kuthan, Martin (referee)
Human BK polyomavirus, also known as Polyomavirus hominis type 1, is a small animal tumorigenic virus. It penetrates into the host cell by caveolin-mediated endocytosis and then through the ER pathway to get into the nucleus where the virus replicates and expresses viral proteins. BKV primary infection typically occurs during childhood and id mostly asymptomatic, it is only occasionally accompanied by mild respiratory or urinary tract illnesses associated with viruria. After primary infection the virus occurs mainly in the kidney and urinary tract and in immunocompetent individuals remains in nonreplicative state. Healthy individuals have no health problems and it persists as a lifelong infection. In immunosuppressed individuals, particularly renal and bone marrow transplant patients, causing virurie, viremia, ureteral stenosis and serious nephropathy, this can lead to graft failure. The prevalence of this virus in the world is significant, scientific publications indicate that up to 80% of the human population has specific antibodies. Any small amounts of the virus prevalence reported in some publications are probably caused by using various sensitive detection methods and different types of samples.
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