Why do cardiologists find it useful to study zebrafish?
The zebrafish offers several distinct advantages as a genetic and embryonic model system to study cardiovascular disease. One major advantage is that zebrafish are vertebrates that can be used for unbiased and whole-genome forward genetic screens.
Can zebra fish repair its own heart?
The zebrafish has a remarkable capability to regenerate the heart after ventricular injury or amputation, mainly by the ability of the remaining cardiomyocytes to de-differentiate, and proliferate to replace the lost cardiac tissue (35, 39).
What are some mutant phenotypes that might be found that could affect the development of the heart in zebrafish?
Table 1
| Zebrafish mutant | Gene | Cardiac Phenotype |
|---|---|---|
| main squeeze/lost contact | integrin-like kinase | Deterioration contractility; blood vessel dilation |
| dead beat | phospholipase C γ1 | Deterioration ventricular contractility; lacks lumenized vasculature |
| Rhythmicity | ||
| island beat | L-type calcium channel subunit α1C | Uncoordinated contraction |
Why is zebrafish used in scientific research?
Because of its fully sequenced genome, easy genetic manipulation, high fecundity, external fertilization and rapid development, and nearly transparent embryo, zebrafish are a unique model animal for biomedical research, including studies of biological processes and human diseases.
What is special about zebra fish?
As a vertebrate, the zebrafish has the same major organs and tissues as humans. Their muscle, blood, kidney and eyes share many features with human systems. Zebrafish have the unique ability to repair heart muscle. For example, if part of their heart is removed they can grow it back in a matter of weeks.
Are zebra fish invertebrates?
The zebrafish has emerged over the past decade as a major model system for the study of development due to its invertebrate-like advantages coupled with its vertebrate biology.
What is especially exciting about research into regeneration in zebrafish?
What is especially exciting about research into regeneration in zebrafish? a) Amputation of a fin leads to regeneration of a limb, implying an evolutionary homology between the two structures.
Why is zebrafish a model organism in biotechnology?
What makes zebrafish a good model?
One reason that zebrafish are an important biomedical model is because zebrafish embryos are transparent and they develop outside of the uterus. This unique developmental process allows scientists to study the details of development starting from fertilization and continuing throughout development.
Why is zebrafish a model system?
Zebrafish provide multiple significant advantages over mammalian vertebrate model organisms such as mice and rats. Early development of zebrafish embryos is external, rapid, and visually accessible. The embryo and chorion, the protective membrane surrounding the embryo, are transparent.
Can zebrafish regenerate cells on command?
Adult zebrafish are able to regenerate different organs, including all fins (32), the spinal cord (33), the retina (34), the heart (35), the telencephalon (36), and the kidney (37). Interestingly, the mechanisms that control regeneration seem to be organ-specific.
What are the advantages of using zebrafish for research?
In addition to utilizing zebrafish disease models to characterize human diseases, researchers can also identify and test new drugs to treat the diseases being modeled. The ability of zebrafish to generate many embryos every time they breed makes them especially useful for high throughput drug screening.
Is zebrafish a good model for cardiovascular research?
Zebrafish as a genetic model for cardiovascular research. The zebrafish model offers several advantages in examining the genetic mechanisms behind cardiovascular development and function. First, zebrafish produce a large number of easily accessible and transparent embryos, facilitating phenotypic driven genetic screens.
How does the zebrafish heart develop?
Cardiac cells of the zebrafish begin as two lateral populations, migrating to the midline and forming the primitive heart tube. As the embryo develops, the heart tube undergoes cardiac looping and further differentiates into distinct cardiac chambers separated by valve leaflets at the atrioventricular (AV) junction [ 1, 2 ].
What is the role of calcium extrusion in the zebrafish heart?
Ebert AM, et al. Calcium extrusion is critical for cardiac morphogenesis and rhythm in embryonic zebrafish hearts. Proc. Natl. Acad. Sci. 2005;102:17705–17710. [ PMC free article] [ PubMed] [ Google Scholar] 20. Shu X, et al. Na,K-ATPase is essential for embryonic heart development in the zebrafish. Development. 2003;130:6165–6173.
What can zebrafish be used to study?
More recently, the zebrafish has been used to study mechanisms leading to human cardiac diseases and to model human congenital and acquired cardiac diseases.