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How far are we off being able to regrow broken organs in humans? To be honest I guess doing Eye transplants is beyond our current ability even if we could grow
by andy_ppp 5y ago
How far are we off being able to regrow broken organs in humans? To be honest I guess doing Eye transplants is beyond our current ability even if we could grow them, but new hearts livers and kidneys could be very useful.
- epmaybe 5y agoI’d imagine the limiting factor in all of these is still functionality of these organs. We can reorganize them to look somewhat like the actual organ (like in the linked article), but whether or not the organ functions the same is still under much investigation.
- phendrenad2 5y agoAlso how do you connect up the nerves? A heart transplant works because the heart is basically self-regulating. But the eye needs thousands of nerves to connect to the brain to be useful.
- ordu 5y agoJust grow nerves to the stem of the brain. Axons could do it, they did for everyone who was born with healthy eyes. It would be quite an achievement though, because axons navigate their way by a gradients of some chemicals, which probably dissipate with age. And problems will not end when nerves have grown. Brains would need to learn how to use them.
- andy_ppp 5y agoThis is weird because the vagus nerve and breathing rate can both slow/speed up the heart. What about when doing exercise, how is the signal sent to the heart to say speed up?
- TaupeRanger 5y agoCutting edge work in bioelectrical fields (see Michael Levin's lab) looks quite promising, although quite a long way off in terms of human applications. They can do all sorts of seemingly miraculous things in planaria.
- akoluthic 5y agoLevin gave a mind boggling talk about some of their work a couple years ago: https://youtu.be/RjD1aLm4Thg https://youtu.be/RjD1aLm4Thg