Dipyridamole, a coronary vasodilatator, was found to possess antiviral activity against represent... more Dipyridamole, a coronary vasodilatator, was found to possess antiviral activity against representatives of different families. The antiviral properties were studied in chick embryo, human diplid and FL cell cultures by the agar diffusion plaque inhibition and plaque reduction tests and one-step growth cycle experiments. The inhibition of the virus-induced cytopathic effect was estimated quantitatively. Dipyridamole significantly inhibited the yield of members of the viral families Picornaviridae, Togaviridae, Orthomyxoviridae, Paramyxoviridae, Herpetoviridae and Poxviridae, as well as of Chlamydiaceae (sheep abortion agent).
Lymphocytes play a key role in cell-mediated immunity and are host cells for several viral and ba... more Lymphocytes play a key role in cell-mediated immunity and are host cells for several viral and bacterial pathogens. Their importance in adenovirus (Ad) infections is not yet fully understood. The initial event, the attachment of Ad to lymphocytes and their subsets, was examined using flow cytometry. The study included analysis of stimulated T cells in binding assays with FITC-labeled Ad fiber. The results confirm that native peripheral lymphocytes express very small amounts of Ad receptors. Stimulation with PHA and interleukin 2 induced the expression. The presence of Ad DNA as a sign of internalization in stimulated cells was demonstrated using the polymerase chain reaction. The findings suggest that lymphocytes after stimulation can turn into target cells for Ad. This is particularly important if there are indications for persistence of Ad, and in the case of immunocompromised patients severe, life-threatening diseases can develop.
Dipyridamole, a coronary vasodilatator, was found to possess antiviral activity against represent... more Dipyridamole, a coronary vasodilatator, was found to possess antiviral activity against representatives of different families. The antiviral properties were studied in chick embryo, human diplid and FL cell cultures by the agar diffusion plaque inhibition and plaque reduction tests and one-step growth cycle experiments. The inhibition of the virus-induced cytopathic effect was estimated quantitatively. Dipyridamole significantly inhibited the yield of members of the viral families Picornaviridae, Togaviridae, Orthomyxoviridae, Paramyxoviridae, Herpetoviridae and Poxviridae, as well as of Chlamydiaceae (sheep abortion agent).
Lymphocytes play a key role in cell-mediated immunity and are host cells for several viral and ba... more Lymphocytes play a key role in cell-mediated immunity and are host cells for several viral and bacterial pathogens. Their importance in adenovirus (Ad) infections is not yet fully understood. The initial event, the attachment of Ad to lymphocytes and their subsets, was examined using flow cytometry. The study included analysis of stimulated T cells in binding assays with FITC-labeled Ad fiber. The results confirm that native peripheral lymphocytes express very small amounts of Ad receptors. Stimulation with PHA and interleukin 2 induced the expression. The presence of Ad DNA as a sign of internalization in stimulated cells was demonstrated using the polymerase chain reaction. The findings suggest that lymphocytes after stimulation can turn into target cells for Ad. This is particularly important if there are indications for persistence of Ad, and in the case of immunocompromised patients severe, life-threatening diseases can develop.
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Papers by Renate Mentel