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5.
Vopr Virusol ; (3): 338-41, 1980.
Artículo en Ruso | MEDLINE | ID: mdl-6254267

RESUMEN

Experiments in cotton rats weighing 60-80 g orally vaccinated with gradually decreasing doses of live poliovaccine type II causing immunological changes of varying intensity demonstrated the attenuated poliomyelitis virus to penetrate the CNS, lungs, and spleen quite regularly. The virus could be isolated from the cytoplasmic extracts of these organs for up to 45 days, from the spleen for 60 days. Penetration of the virus into the CNS did not result in the development of disease. The long-term persistence of the virus in the organs was accompanied by the development of inflammatory-degenerative changes in the CNS and in some cases by pneumonia.


Asunto(s)
Vacuna Antipolio Oral/administración & dosificación , Poliovirus/aislamiento & purificación , Animales , Anticuerpos Antivirales/análisis , Transformación Celular Viral , Sistema Nervioso Central/microbiología , Inmunización , Pulmón/microbiología , Poliovirus/inmunología , Ratas , Bazo/microbiología , Factores de Tiempo , Vacunas Atenuadas/administración & dosificación
8.
Vet Med Nauki ; 16(9): 103-8, 1979.
Artículo en Búlgaro | MEDLINE | ID: mdl-397670

RESUMEN

A review of references found in World literature concerning the present day problem of grippe virus participation in man's and animals' pathology is made. New aspects of the relations between grippe viruses in man and in the animals, strain circulation, changes in their antigenic structures and the arisal of spontaneous mutations as well as the possibility for preserving human grippe strains in animals during interepidemical periods are revealed. Various hypotheses confirming this possibility are discussed. Results obtained in this field are summed up and an attempt to compare and analyse them is made in view to construct all-round conceptions and elaborate a strategy related with the study of grippe viruses also in animals and birds as their eventual biological reservoir. Data presented are of interest not only for etiology and epidemiology but also for the ecology of viral infections. Conclusions concerning the need to study grippe virus interrelations in man and animals in an all-round aspect, including the participation of various specialists, are made.


Asunto(s)
Gripe Humana/epidemiología , Animales , Animales Domésticos , Anticuerpos Antivirales/análisis , Antígenos de Superficie/inmunología , Antígenos Virales/inmunología , Brotes de Enfermedades/epidemiología , Humanos , Virus de la Influenza A/genética , Virus de la Influenza A/inmunología , Virus de la Influenza A/aislamiento & purificación , Gripe Humana/inmunología , Gripe Humana/microbiología , Recombinación Genética
9.
Biull Eksp Biol Med ; 86(11): 566-8, 1978 Nov.
Artículo en Ruso | MEDLINE | ID: mdl-214185

RESUMEN

Of 20 suckling rabbits, 4-5-days old, inoculated with live smallpox vaccine intradermally 6 displayed symptoms of generalized pox virus and neuroparalysis complications. Intensive accumulation of specific antigen in the brain, lungs, spleen, and the lymph glands was revealed by immunofluorescent method. The smallpox vaccine virus was isolated from these organs. Prolonged persistance of the attenuated smallpox virus was observed in the brain, spinal cord, lungs, spleen, and the lymph glands of 14 suckling rabbits showing no signs of any disease; specific antigen was revealed by immunofluorescent test. Vascular disturbances and slight cell changes were observed in the brain tissue of the inoculated animals. These changes were more severe in the sick animals.


Asunto(s)
Parálisis/etiología , Vacuna contra Viruela/efectos adversos , Viruela/prevención & control , Vacunación , Animales , Animales Recién Nacidos , Antígenos Virales/análisis , Encéfalo/microbiología , Pulmón/microbiología , Ganglios Linfáticos/microbiología , Conejos , Viruela/inmunología , Viruela/microbiología , Médula Espinal/microbiología , Bazo/microbiología , Virus de la Viruela/aislamiento & purificación
10.
Biull Eksp Biol Med ; 85(5): 567-9, 1978 May.
Artículo en Ruso | MEDLINE | ID: mdl-77691

RESUMEN

Specific antigen was identified by the immunofluorescent test in the walls of the brain blood vessels, in the neurons, and in the glial cells of albino newborn mice and Syrian hamsters inoculated subcutaneously with 4 different batches of live measles vaccine. The pathomorphological test of the brain tissue revealed mainly vascular disturbances. The data obtained testify to the presence of residual neurotropism in the attenuated measles virus (strain "L-16").


Asunto(s)
Antígenos Virales/análisis , Epítopos , Vacuna Antisarampión/administración & dosificación , Vacunas Atenuadas/administración & dosificación , Animales , Animales Recién Nacidos , Encéfalo/inmunología , Cricetinae , Técnica del Anticuerpo Fluorescente , Inmunización , Mesocricetus , Ratones , Factores de Tiempo
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