53449 comments

• Comment Link Samstag, 18 Januar 2025 23:18 posted by Pigspin

  Scientists have brought pig organs back to life an hour after the animals died in a
  breakthrough that could revolutionise human transplants.
  
  
  When a heart stops beating, the lack of blood flow
  begins to destroy the body's cells and organs.
  
  But, using new technology, researchers were able to restore circulation in dead pigs.
  
  
  In the future, it could be used to treat organ damage from heart attacks or strokes -
  saving patients who would have died.
  
  While trials, and use in humans, are still some way off, scientists also say the system
  could transform organ donation, allowing them to be transported for longer periods. 
  
  The method, called OrganEx, hooks up recently deceased animals to pumps filled with a special mixture of 13
  drugs known to fight cell death and inflammation.
  
  
  
  
  (Stock Image) Researchers were able to restore circulation in dead pigs after they
  had been anaesthetised from induced heart attacks 
  
  
  
  
  
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  The team, from Yale University, tested the system on pigs that had been anaesthetised and died from induced
  heart attacks.
  
  The results, published in the journal Nature, showed activity
  in organs including the heart, liver and kidneys, with some function fully restored. 
  
  Although a pig could not yet fully survive, their hearts began to beat and the
  animals jerked their heads and necks in the hours after death.
  
  
  
  Author David Andrijevic said: ‘All cells do
  not die immediately. It is a process in which you can intervene,
  stop and restore some cellular function.'
  
  Meanwhile, man-made embryos have been created in the lab in a world
  first which bypasses the need for eggs or sperm.
  
  Scientists from the Weizmann Institute of Science in Israel used
  stem cells from mice to create a synthetic embryo-like structure,
  with the beginnings of a brain, intestines and a beating heart.
  
  
  The study could help to understand miscarriages, and provide new
  sources of cells and tissues for human transplants.
  
  It could even one day allow two people of the same sex or a single person to
  have a baby on their own.
  
  Scientists, whose study is published in the journal Cell, also hope they could in future use similar embryos to reduce the need for animal testing.
  
  
  But the researchers stressed that a human embryo which starts to develop tissue and organs is still far
  from becoming reality.
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