Radiation-induced formation of apoptotic bodies in rat thymus

Journal Article · Tue Jan 01 00:00:00 EST 1985 · Radiat. Res.; (United States)

DOI:https://doi.org/10.2307/3576309· OSTI ID:6135929

Ohyama, H; Yamada, T; Ohkawa, A; Watanabe, I

The process of interphase death of thymocytes in whole-body X-irradiated rats were studied. Cell size distribution analysis indicates that cell fragments (=apoptotic bodies) appeared in the thymus and increased in number depending on dose (200-1000 R) and time (2-6 hr) after irradiation with corresponding decrease in normal-size thymocytes. Occurrence of nuclear fragmentation in association with the cellular fragmentation was proved with cytofluorometric determination of DNA content in individual cells. Scanning electron microscopic observations also revealed extensive fragmentation of cells in the irradiated rat thymus. The results show clearly that cells as well as nuclei fragments rapidly into smaller pieces of various sizes in the irradiated rat thymus as commonly observed with apoptosis.

• Research Organization: National Inst. of Radiological Sciences, Anagawa, Japan
• OSTI ID: 6135929
• Journal Information: Radiat. Res.; (United States), Vol. 101:1
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CELL KILLING
RADIOINDUCTION
THYMOCYTES
FRAGMENTATION
SCANNING ELECTRON MICROSCOPY
THYMUS
CELL FLOW SYSTEMS
RATS
WHOLE-BODY IRRADIATION
X RADIATION
ANIMAL CELLS
ANIMALS
BODY
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
EXTERNAL IRRADIATION
IONIZING RADIATIONS
IRRADIATION
LYMPHATIC SYSTEM
MAMMALS
MICROSCOPY
ORGANS
RADIATIONS
RODENTS
SOMATIC CELLS
VERTEBRATES
560121* - Radiation Effects on Cells- External Source- (-1987)