Heart tissue that spent one month in space was found to beat irregularly, while proteins and mitochondria in heart cells became dysfunctional.
The human heart has been found to show signs of aging after a mere month in space.Heart tissue samples aboard the International Space Station were discovered to beat only around half as strongly as they do on Earth, according to a new paper in the journal Proceedings of the National Academy of Sciences.This indicates that the microgravity of space weakens and ages heart tissue, expanding our knowledge of how extended periods of spaceflight might affect the bodies of astronauts in the future.
'An incredible amount of cutting-edge technology in the areas of stem cell and tissue engineering, biosensors and bioelectronics, and microfabrication went into ensuring the viability of these tissues in space.' study co-author Deok-Ho Kim, a professor at Johns Hopkins School of Medicine, said in a statement.The researchers found that after 30 days, the heart tissue had started beating irregularly, with the delay between beats in space growing to nearly 5 times that on Earth.
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