Related Experiment Video
Updated: Nov 25, 2025
11:24
Measuring DNA Damage and Repair in Mouse Splenocytes After Chronic In Vivo Exposure to Very Low Doses of Beta- and Gamma-Radiation
Published on: July 3, 2015
11.3K
Analytical methods for assessing changes induced by gamma exposure in an animal model
Matheus F Soares Mingote1, Tarcísio P R Campos2, Rodinei Augusti3
1Departamento de Engenharia Nuclear, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
Revista Da Associacao Medica Brasileira (1992)
|December 17, 2020
Summary
Early radiation exposure in rats showed no histological changes but revealed significant alterations in brain lipid profiles using DESI-MSI. This highlights radiometabolomics for detecting subtle molecular responses to radiation.
Area of Science:
- Biomedical science
- Molecular imaging
- Radiation biology
Background:
- Ionizing radiation damages cellular DNA, impacting the metabolome.
- Early detection of radiation effects is crucial for understanding tissue response.
Purpose of the Study:
- To investigate early tissue responses to radiation exposure using multiple analytical techniques.
- To identify molecular changes in response to ionizing radiation.
Main Methods:
- Histological analysis (Hematoxylin-Eosin staining) of rat organs.
- Mass spectrometry imaging (DESI-MSI) for molecular analysis of lipids, particularly in the brain.
Main Results:
- Histology revealed nonspecific inflammatory changes, with no fibrosis, necrosis, or apoptosis.
- DESI-MSI demonstrated significant radio-induced changes in lipid intensities within the brain.
Conclusions:
- No early histological or mass changes were observed in rats exposed to 5 Gy radiation.
- DESI-MSI effectively detected early molecular alterations in brain lipids, establishing radiometabolomics as a promising field.
