RESUMO
The Coxsackie virus B1 has been studied for its effect on the chromosome apparatus in cells of mouse feti and newborn mice in case of intraperitoneal infection of females on the 3d week of pregnancy. It is stated that the virus readily moves across the placental barrier and induces chromosome aberrations in the cells of feti, their number being 2.5 times higher than the control level. The maximal number of structural chromosome aberrations was registered during the first three days from the moment of infecting. Then a gradual decrease in the number of aberrant metaphases in the cells of newborn mice was observed. It had reached the value of the control level by the 17th day of observation.
Assuntos
Aberrações Cromossômicas , Infecções por Coxsackievirus/genética , Enterovirus Humano B , Efeitos Tardios da Exposição Pré-Natal , Animais , Animais Recém-Nascidos , Infecções por Coxsackievirus/microbiologia , Enterovirus Humano B/isolamento & purificação , Feminino , Feto , Metáfase , Camundongos , Camundongos Endogâmicos C57BL , GravidezRESUMO
A study was made of seroconversion in respect of Coxsackie B 1-6 viruses in 33 patients with dilated cardiomyopathy and in 25 normal persons. A considerable increase of the rate of demonstration and titres of type-specific neutralizing antibodies was revealed in the patients examined. This circumstance suggests the etiologic relationship between DCMP and Coxsackie B viral infection.
Assuntos
Cardiomiopatia Dilatada/etiologia , Infecções por Coxsackievirus/complicações , Adulto , Anticorpos Antivirais/sangue , Cardiomiopatia Dilatada/diagnóstico , Infecções por Coxsackievirus/diagnóstico , Enterovirus Humano B/classificação , Enterovirus Humano B/imunologia , Feminino , Humanos , Masculino , Testes de Neutralização , Sorotipagem , Fatores de TempoAssuntos
Lectinas , Virologia , Aglutinação , Animais , Antivirais/farmacologia , Transformação Celular Viral/efeitos dos fármacos , Humanos , Lectinas/imunologia , Lectinas/farmacologia , Ligação Proteica , Receptores Mitogênicos/metabolismo , Projetos de Pesquisa , Propriedades de Superfície , Virologia/métodos , Ativação Viral/efeitos dos fármacos , Vírus/efeitos dos fármacos , Vírus/imunologiaRESUMO
The antiviral properties of the juice of 11 species of the orpine family were studied. 8 of them belonged to the genera Kalanchoe, i. e. Kalanchoe diagremontiona R. Hamet, K. pinnata (Zam.) Persoon, K. Peteri Werd., K. prolifera (Bovie) R. Hamet, K. marnierriana (Mann. et Boit) Jacobs; K. blossfeldiana v. Poelln, K. beharensis Drake del Gastillo, K. waldheimii R. Hamet et Perr and 3 belonged to the Sedum genera, i. e. Sedum telephium L., S. spectabile Boreau, S. acre L. A high virus neutralizing activity of the juice from 4 species of Kalanchoe, i. e. K. blossfeldiana, K. waldheimii, K. pinnata and K. beharensis was shown. Inhibition of the virus infecting activity was observed at the juice dilutions from 1-2 to 1-8000 and higher. The viricidal factor of Kalanchoe is stable. It is not destroyed by ether, alcohol and potassium periodate. It is not absorbed by bentonite at the acid pH values. Addition of cattle serum or purified proteins to the juice resulted in their precipitation which suppressed the viricidal activity of the juice.
