PUBLICATION
Photobiological effects of UVA and UVB light in zebrafish embryos: Evidence for a competent photorepair system
- Authors
- Dong, Q., Svoboda, K., Tiersch, T.R., and Todd Monroe, W.
- ID
- ZDB-PUB-070827-26
- Date
- 2007
- Source
- Journal of photochemistry and photobiology. B, Biology 88(2-3): 137-146 (Journal)
- Registered Authors
- Svoboda, Kurt
- Keywords
- Danio rerio, Ultraviolet radiation, UVA, Embryo, Photorepair
- MeSH Terms
-
- Animals
- Dose-Response Relationship, Radiation
- Embryo, Nonmammalian/metabolism
- Embryo, Nonmammalian/radiation effects*
- Embryo, Nonmammalian/ultrastructure
- Embryonic Development/physiology
- Embryonic Development/radiation effects*
- Gene Expression Regulation, Developmental/physiology
- Gene Expression Regulation, Developmental/radiation effects*
- Time Factors
- Ultraviolet Rays/adverse effects*
- Zebrafish/embryology*
- Zebrafish/physiology
- PubMed
- 17716904 Full text @ J. Photochem. Photobiol. B
Citation
Dong, Q., Svoboda, K., Tiersch, T.R., and Todd Monroe, W. (2007) Photobiological effects of UVA and UVB light in zebrafish embryos: Evidence for a competent photorepair system. Journal of photochemistry and photobiology. B, Biology. 88(2-3):137-146.
Abstract
The consequences of UVB and UVA irradiation on hatch rate, mortality, and malformation were studied in embryonic zebrafish (Danio rerio). The use of zebrafish embryos has expanded from traditional developmental models to diverse studies, including many techniques utilizing light exposure. To characterize useful indicators of photodamage, the responses and threshold limits of UV radiation as a function of embryonic stage and fish source were evaluated. Significant differences in UVB susceptibility were observed in embryos at 3, 6-7, 12, and 24h post-fertilization (hpf), with the 1000-cell stage (3hpf) having greatest tolerance to UVB. Embryos derived from zebrafish raised in outdoor ponds were more tolerant to UVB than were embryos from laboratory-raised fish. Combinations of UVB and UVA exposure were used to confirm the presence of a competent photorepair system in zebrafish that could return otherwise malformed embryos to a normal phenotype. Overall, embryonic zebrafish had large tolerances (LD(50) of 850J/cm(2)) to UVA, confirming their suitability for photoactivation and photorepair studies.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping