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SpaceX CRS-23 Dragon returns experiments on brain, muscles, liver to Earth by Staff Writers Houston TX (SPX) Sep 29, 2021
The 23rd SpaceX commercial resupply services mission returns samples from scientific experiments on the International Space Station. Back on Earth, scientists anticipate quick access to their experiments for additional observations and analyses. Dragon undocks from the space station Sept. 30 and is scheduled for splashdown near NASA's Kennedy Space Center in Florida hours later.
Two rings to shear them all The Ring Sheared Drop (RSD) experiment developed a device that uses surface tension rather than a solid container to hold liquids, something possible only in microgravity. Researchers used the device to study protein aggregates called amyloid fibrils, which may be related to diseases such as Alzheimer's, Parkinson's, and type 2 diabetes. The device pins a drop of liquid between two rings and rotates one while keeping the other stationary to create shear flow, or a difference in velocity between adjacent liquid layers. Previous research shows that this shear flow plays a significant role in formation of amyloid fibrils. The study confirmed that the surface tension concept of RSD works for containing protein solutions in space. Fluid extracted after each run is returning to Earth so researchers can determine the extent of protein fibril formation, study their structure, and compare both to what happens in ground-based controls. Results could improve the fundamental understanding of how amyloid fibrils form and are transported, as well as the effects of shear at fluid interfaces relevant to conditions in the body.
Muscling out atrophy Researchers plan to compare the two types of cultures to verify the effectiveness of the biomaterials. Results may lead to the production of pharmaceuticals to prevent muscle atrophy, not only for astronauts in space, but also for the elderly on Earth.
Analyzing drug-metabolizing liver enzymes This test could lead to a better understanding of spaceflight-induced changes in liver gene expression and may support development of new therapies that can account for the body's adaptations to spaceflight. Samples prepared on the ground launched frozen to the space station. Following each experiment run, images and videos were downlinked, and samples placed in cold stowage before return to Earth for further analysis. A relatively new capability, returning time-sensitive experiments quickly to Earth allows scientists to look at samples sooner, before gravity has a chance to fully take effect, then follow up with more in-depth analysis at their home labs.
Running ground controls and processing flight samples at the same Kennedy Space Center labs also provides more consistent results. With the quick turnaround, investigators also can modify an experiment, learning from the first round to plan for the next.
Space Health Institute Releases Postdoctoral Fellowship Solicitation Houston TX (SPX) Sep 24, 2021 The Translational Research Institute for Space Health (TRISH) at Baylor College of Medicine, with consortium partners California Institute of Technology (Caltech) and Massachusetts Institute of Technology (MIT), are seeking exceptional proposals from postdoctoral fellows ready to help solve the challenges of space exploration. TRISH's postdoctoral fellowship program supports early-career scientists pursuing innovative, breakthrough research with the potential to reduce spaceflight associated healt ... read more
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