Concentration of T3 and T4 in blood of non-irradiated and irradiated different doses rats non-fed for two days before being sacrificed
Creators
- 1. NAN Respubliki Belarus', Inst. Radiobiologii, Minsk (Belarus)
Description
The possibilities of changing T3 and T4 concentration in blood of non-irradiated and irradiated males with doses of 8, 6, 4, 2, 1 and 0.5 Gy non-fed for two days before being sacrificed over 2, 7, 10, 14, 21 and 28 days after irradiation are studied. The irradiation was conducted at the Ingur facility with the 137Cs-source by the exposure dose rates of 2.4 x 10-5 A/kg which provided for the absorbed dose rate of 8.6 x 10-4 Gy/s. It is shown that the blood of rats irradiated with the doses of 0.5, 1, 2, 4 and 6 Gy no regular changes in the T3 and T4 concentration as compared to the non-irradiated rats were noticed, if they were not fed for two days before decapitation. This testifies to the fact, that the effect of ionizing radiation on thyroid function is mediated by anorexia syndrome. The decrease in the T4 concentration after 8 Gy is most likely connected with enterotoxemy developed in difficult cases of acute radiation sickness
Abstract (Russian)
Изучены возможности изменения концентрации Т3 и Т4 в крови необлученных и облученных в дозах 8, 6, 4, 2, 1 и 0.5 Гр самцов крыс, которых лишали корма за 2 суток перед забоем на 2, 7, 10, 14, 21 и 28 суток после облучения. Облучение производили на установке Ингур с 137Cs-источником при мощности экспозиционной дозы 2.4 x 10-5 A/кг, что обеспечивало мощность поглощенной дозы 8.6 x 10-4 Гр/с. Показано, что в крови крыс, облученных в дозах 0.5, 1, 2, 4 и 6 Гр не отмечается закономерных изменений концентрации Т3 и Т4 по сравнению с необлученными, если животные голодали в течение 2 суток перед забоем, что говорит об опосредованном через анорексический синдром характере действия излучения на тироидную функцию. Снижение концентрации Т4 после 8 Гр, по-видимому, связано с развивающейся при тяжелых формах ОЛБ энтеротоксемиейAdditional details
Additional titles
- Original title (Russian)
- Концентрация Т
Publishing Information
- Journal Title
- Radiatsionnaya Biologiya, Radioehkologiya
- Journal Volume
- 39
- Journal Issue
- 6
- Journal Page Range
- p. 636-643
- ISSN
- 0869-8031
- CODEN
- RBIREJ
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 31064872
- Subject category
- S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
- Descriptors DEI
- BIOLOGICAL FUNCTIONS; BIOLOGICAL RADIATION EFFECTS; BLOOD SERUM; CESIUM 137; DOSE RATES; DOSE-RESPONSE RELATIONSHIPS; EXTERNAL IRRADIATION; FEEDING; GAMMA RADIATION; GAMMA SOURCES; MALES; RADIATION DOSES; RADIATION SYNDROME; RADIOSENSITIVITY; RATS; THYROID; THYROID CELLS; TIME DEPENDENCE
- Descriptors DEC
- ANIMAL CELLS; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOLOGICAL EFFECTS; BIOLOGICAL MATERIALS; BLOOD; BLOOD PLASMA; BODY; BODY FLUIDS; CESIUM ISOTOPES; DOSES; ELECTROMAGNETIC RADIATION; ENDOCRINE GLANDS; GLANDS; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; IRRADIATION; ISOTOPES; MAMMALS; MATERIALS; NUCLEI; ODD-EVEN NUCLEI; ORGANS; RADIATION EFFECTS; RADIATION SOURCES; RADIATIONS; RADIOISOTOPES; RODENTS; SOMATIC CELLS; VERTEBRATES; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 18 refs., 4 tabs.