Pfizer CEO Albert Bourla speaks with CNN’s Sanjay Gupta as the company prepares to roll out doses of the Pfizer-BioNTech Covid-19 vaccines in the US.
Researchers at the Francis Crick Institute and University College London have rebuilt a human thymus, an essential organ in the immune system, using human stem cells and a bioengineered scaffold. Their work is an important step towards being able to build artificial thymi which could be used as transplants.
The thymus is an organ in the chest where T lymphocytes, which play a vital role in the immune system, mature. If the thymus does not work properly or does not form during foetal development in the womb, this can lead to diseases such as severe immunodeficiency, where the body cannot fight infectious diseases or cancerous cells, or autoimmunity, where the immune system mistakenly attacks the patient’s own healthy tissue.
In their proof-of-concept study, published in Nature Communications today, the scientists rebuilt thymi using stem cells taken from patients who had to have the organ removed during surgery. When transplanted into mice, the bioengineered thymi were able to support the development of mature and functional human T lymphocytes.
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Better doublecheck your kitchenware! 😃
The results indicate that environmental chemicals may be an important contributing factor to the obesity epidemic. Unfortunately, it is practically impossible to avoid exposure to PFASs as they have been widely used in products like cookware, clothes, shoes, wrappers and furniture, to make them more stain-resistant, waterproof and/or nonstick.
Additionally, even though some PFASs (but not all) are no longer manufactured in the U.S., they continue to be in other countries around the globe. The long life of the chemicals and their ability to travel long distances through the air makes exposure possible even years after manufacturing and at completely different geographical locations.
Continue reading “Chemicals used to make non-stick pans linked to rapid weight gain” »
As much of the aviation industry fights to survive the coronavirus pandemic, some economists and engineers see the crisis as an opportunity to use stimulus funds to propel air travel to a carbon-neutral future. Photo illustration: George Downs.
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Microsoft co-founder Bill Gates believes a return to “normal” life is further down the road for the US than people expect, despite a Covid-19 vaccine being approved and distributed this week.
Conceding that by the summer of 2021, the US should be “way closer to normal than we are now,” Gates, who has donated millions to vaccination efforts through his foundation, believes a full return to normal will likely not be possible until after 2022.
When one mentions the topic of “head transplantation” (or a related topic – the “brain transplant”), for most people, it remains a topic purely in the context and sphere of science fiction.
Yet most people are unaware of the following history:
A collection of 29 papers, 19 of which were published Nov. 25, has advanced our knowledge of how spaceflight affects the human body farther than ever before.
