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Cardiac progenitor cells generate healthy tissue after a heart attack

Following a heart attack, the human body is incapable of repairing lost tissue due to the heart’s inability to generate new muscle. However, treatment with heart progenitor cells could result in the formation of functional heart cells at injured sites. This new therapeutic approach may be tested in clinical studies within the next two years.

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Organ transplant recipients remain vulnerable to COVID-19 even after second vaccine dose

In a study published in the Journal of the American Medical Association (JAMA), Johns Hopkins Medicine researchers show that although two doses of a vaccine against SARS-CoV-2 — the virus that causes COVID 19 — confers some protection for people who have received solid organ transplants, it’s still not enough to enable them to dispense with masks, physical distancing and other safety measures.

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Mouse sperm generated in rats

Making gametes such as sperm and eggs from pluripotent stem cells, primitive cells that can make all the tissues, greatly contributes to efficient reproduction of livestock animals and future assisted reproductive medicine. Researchers pave the way to achieve this goal using a body of xenogenic animals.

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Reactivating aging stem cells in the brain

The stem cells in our brain generate new neurons throughout life, for example in the hippocampus. This region of the brain plays a key role for a range of memory processes. With increasing age, and in patients suffering from Alzheimer’s disease, the hippocampus’ ability to create new neurons declines steadily — and with it, its memory functions.

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