Category: Life Saving Events/Procedures


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Doctors Could 3D-Print Micro-Organs with New Technique

 

Stem Cells

Researchers have figured out a way to print 3D blocks of living stem cells.
Credit: Wei Sun/Drexel University

 

Gone are the days when 3D printers merely built plastic trinkets — scientists say 3D-printed structures loaded with embryonic stem cells could one day help doctors print out micro-organs for transplant patients.

Embryonic stem cells, obtained from human embryos, can develop into any kind of cell in the body, such as brain tissue, heart cells or bone. This property makes them ideal for use in regenerative medicine — repairing and replacing damaged cells, tissues and organs.

Scientists typically experiment with embryonic stem cells by dosing them with biological cues that guide them toward developing into specific tissue types — a process called differentiation. This process begins with the cells forming spherical masses called embryoid bodies — an activity that mimics the early stages of embryonic development. [7 Cool Uses of 3D Printing in Medicine]

Previous research suggested the best way to grow embryonic stem cells is not in flat lab dishes, but in 3D environments that mimic how these cells might develop in human bodies. Recently, scientists developed 3D printers for embryonic stem cells. A 3D printer works by depositing layers of material, just as ordinary printers lay down ink, except it can also lay down flat layers on top of one another to build 3D objects.

Until now, 3D printers for embryonic stem cells just generated flat arrays or simple mounds, called “stalagmites,” of cells. Now, researchers say they have, for the first time, developed a way to print 3D structures laden with embryonic stem cells.

 

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© Baz Ratner
Ebola cases in Sierra Leone could have been cut by 50 percent had the UK had set up beds in the stricken nation’s treatment centers just one month earlier, a new report claims.

Researchers at the London School of Hygiene and Tropical Medicine (LSHTM) suggest had British aid efforts been provided sooner, some 7,500 people could have been prevented from contracting the virus.

During that time frame the UK installed more than 1,500 treatment beds in community centers, and a further 1,200 in specialist Ebola centers.

The World Health Organization (WHO) says 13,945 people fell ill between September 2014 and February 2015.

LSHTM lecturer in infectious diseases Dr Adam Kucharski and his colleagues say the UK’s involvement saved 40,000 lives. However more deaths could have been prevented had they intervened sooner.

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Ebola nurse Pauline Cafferkey admitted to hospital ‘in a very serious condition’ http://on.rt.com/6tg4