Connexin Replacement in Mice Affects Reproductive and Heart Functions
Author Information
Author(s): Winterhager Elke, Pielensticker Nicole, Freyer Jennifer, Ghanem Alexander, Schrickel Jan W, Kim Jung-Sun, Behr Rüdiger, Grümmer Ruth, Maass Karen, Urschel Stephanie, Lewalter Thorsten, Tiemann Klaus, Simoni Manuela, Willecke Klaus
Hypothesis
Replacing connexin43 with connexin26 in mice will reveal unique functions of connexins in reproductive and cardiac systems.
Conclusion
The impaired gametogenesis of homozygous males and females can explain their infertility.
Supporting Evidence
- Only about 17% of the homozygous connexin43 knock-in connexin26 mice were born, and only 6% survived to day 21 post partum.
- Connexin43 knock-in connexin26 male and female mice were infertile and exhibited hypotrophic gonads.
- Histological analysis revealed that the testes of homozygous connexin43 knock-in connexin26 mice had no mature sperm.
Takeaway
Scientists changed a gene in mice to see how it affects their ability to have babies and how their hearts work. They found that the changes made the mice unable to have babies and affected their heart's electrical signals.
Methodology
Transgenic mice were generated with connexin43 replaced by connexin26, and various physiological and histological analyses were performed.
Limitations
The study did not quantify the exact number of pups lost when raised by foster mothers.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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