RESUMO
Protracted prenatal irradiation of animals at the preimplantation stage of embryogenesis is shown to produce disturbances in the development of regulation systems, with their consequences persisting up to sexually mature period of postnatal life. Unknown before, these effects of preimplantation irradiation give the experimental confirmation to the main statement of the previously proposed theoretical concept of the "systemic teratogenesis": the ultimate effect of prenatal irradiation is a distortion of the structure of postnatal neuroimmunoendocrine regulation in the direction of overdevelopment of its endocrine component with the following coadaptive underdevelopment of the nervous and immune components.
Assuntos
Anormalidades Induzidas por Radiação/etiologia , Blastocisto/efeitos da radiação , Sistema Endócrino/efeitos da radiação , Sistema Imunitário/efeitos da radiação , Sistema Nervoso/efeitos da radiação , Glândulas Suprarrenais/efeitos da radiação , Hormônio Adrenocorticotrópico/sangue , Fatores Etários , Animais , Animais Recém-Nascidos , Formação de Anticorpos/imunologia , Formação de Anticorpos/efeitos da radiação , Radioisótopos de Césio/administração & dosagem , Sistema Endócrino/embriologia , Eritrócitos/imunologia , Feminino , Sistema Imunitário/embriologia , Insulina/sangue , Sistema Nervoso/embriologia , Doses de Radiação , Ratos , Ratos Wistar , Ovinos , Pele/microbiologia , Pele/efeitos da radiaçãoRESUMO
Humoral and cellular factors of the immune system of 133 subjects injured in the Chernobyl accident were studied during first 1.5-2 months after radiation, 5-17 months and 3 years after they suffered acute radiation sickness (I-IV degree). Significant disorders in the immune system correlating with the severity of the disease were recorded. In late terms certain shifts persisted in the immune status of subjects who had suffered acute radiation sickness, II and III degree.
Assuntos
Acidentes , Sistema Imunitário/efeitos da radiação , Reatores Nucleares , Lesões por Radiação/imunologia , Humanos , Fatores de Tempo , UcrâniaRESUMO
As many as 138 patients with acute radiation sickness, grades O-IV, were examined over time. It has been revealed that disorders in microecology and humoral immunity agreed well with the severity of radiation damage.
Assuntos
Acidentes , Reatores Nucleares , Lesões por Radiação , Doença Aguda , Anticorpos Antibacterianos/análise , Bactérias/isolamento & purificação , Eritrócitos/imunologia , Escherichia coli/imunologia , Escherichia coli/isolamento & purificação , Humanos , Lesões por Radiação/imunologia , Lesões por Radiação/microbiologia , Pele/microbiologia , Fatores de Tempo , UcrâniaRESUMO
In experiments with CBA and CBA X C57Bl(F-1) mice it was shown that the radio-protective efficacy and the anti-infectious influence of homo- and heterologous immunoglobulin (IG) applied one, two and three times in the period from 4h to 9 days following irradiation with doses of LD80-95/30. This was displayed by the increased survival rate and normalization of intestinal microflora in treated animals in comparison with untreated ones. Heterologous IG administered at varying times (5 to 20 days) after irradiation with the dose of 4.8 Gy increased the resistance of treated mice to infection with living E. coli culture.