Donut Sugar Could Help Stored Blood Last
This is scientific American sixty seconds science. I'm Suzanne barred lead. Donations save lives but blood can only be stored under refrigeration for up to six weeks after that it's no longer usable for transfusions because of that limitation people have to continually donate blood to meet the needs but also in places where refrigeration may not be available. That can also be a challenge. It's difficult to have led available when Needed University of Louisville Bio engineer. Jonathan Copa Kopecek. He says disruptions to regular blood donations due to covert nineteen have put stress on the blood supply and the pandemic underscores the need for more reliable long term storage methods. Blood can be frozen for extended periods of time but it's pretty rare because of all the challenges and complexities with that process instead. Copa checks team has developed a method of preserving blood so it can be stored in a dehydrated state at room temperature to do so. They turn to an unusual preservative. A sugar called TRAE halos which is a common ingredient in donuts. Helped him look fresh even when they might be month old? And you wouldn't know the difference. The researchers chose trae hellos because in nature. It's made by hardy. Animals like Tardy Grades And Sea Monkeys Aka Brine shrimp famous for their ability to survive dehydration. So these animals can dry out completely for a long period of time and then be rehydrated in resume normal function so we wanted to use the trailers that's produced by these organisms and apply that to preserving blood cells in a dried state. Just like those organisms are but I the researchers had to get trae Halos into blood cells. They used ultrasound to drill temporary holes in the cell membranes which let some trae hello skit in and they need to have sufficient levels of trailers on both the inside and the outside of the cell in order to survive the dehydration rehydration process. At that point the blood could be dried and made into a powder and then we can rehydrate the blood and have it returned back to normal. The team is still trying to improve yields but thanks the dried blood could be stored at room temperature for years. The study is in the Journal. Micro FLUIDS COPA check. Says the technique could be ready for clinical trials in three to five years? If successful it could be used to create of dry blood in case of future pandemics natural disasters and for humanitarian aid. Work military operations or even missions to Mars May first-aid kits on the Red Planet will include dried red blood cells. Thanks for listening. For Scientific Americans sixty seconds science. I'm Suzanne barred.