Estimation of the DNA damage in Girardia tigrina (Girard, 1850) after exposure to radiation under extreme conditions / Estimativa dos danos do DNA em Girardia tigrina (Girard, 1850) após exposição à radiação em condições extremas
DOI:
https://doi.org/10.34117/bjdv8n2-247Keywords:
Planaria, pH, Temperature, Hypergravity, Low-power laserAbstract
The use of planarians as experimental models has been increased worldwide especially due to their high capacity of tissue regeneration and ease of laboratory maintenance. The current study aims to assess the genetic damage of Girardia tigrina after exposure of stressors in conditions such as: critical temperature, critical pH, hypergravity (4.4G) and low power laser (685nm). 18 specimens of G. tigrina were used, the extreme conditions mentioned were experimental group with 3 specimens each, and 3 for the control group, all specimens were submitted to the Comet Assay after exposure of stressors, and control group with no extreme condition exposure. The extreme stimuli of critical temperature and pH, hypergravity and low power laser irradiation, caused genetic damages to the G. tigrina, for hypergravity and low-power laser stressors the damage was higher in the pharyngeal and post-pharyngeal regions of the animal with a greatest area of comet tail dragging for the post-pharyngeal region. The extreme stimuli of critical temperature and pH, hypergravity and low power laser irradiation caused genetic damages in planarians Brazilian Journal of Development ISSN: 2525-8761 12160 Brazilian Journal of Development, Curitiba, v.8, n.2, p.12159-12177 feb. 2022. G. tigrina, especially in samples from the pharyngeal and post-pharyngeal regions of the flatworms body assessed by the Comet Assay.References
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