Tag Archives: Stem

Scientists Discover Stem Cells That Could Regenerate Teeth and Bone  SciTechDaily Source link

Washington — Director of National Intelligence Tulsi Gabbard in the last month issued a memo ordering U.S. intelligence agencies to conduct a review of whether random polygraph examinations of their employees or contractors are feasible.  At the same time, the directive emphasizes the need for tests to include questions about whether employees or potential applicants have leaked information to members …

This image shows a coronal section through the mouse brain after stroke and neural stem cell transplantation. The dashed circle indicates the stroke area. The neurite projections of the transplanted human cells are stained in dark brown. Neurites extend locally into the cortex (CX) but also via the corpus callosum (CC) into the other brain hemisphere. Credit: University of Zurich …

Brain damage caused by blocked blood vessels may be treatable using injections of stem cells, according to a new study by researchers from the University of Zurich and the University of Southern California. The results could one day help patients who have experienced some forms of stroke recover lost functions. Using mice with stroke-induced brain damage, the researchers found that …

Cancer scientists have been working against the clock for decades to outsmart a disease that comes back more powerfully after treatment. Traditional treatments like chemotherapy, radiation, and even newer forms of immunotherapy seem to score an initial victory only to see the cancer reappear some months later. The culprit is often the same: the immune system’s most powerful cancer-killing fighters, …

When you buy through links on our articles, Future and its syndication partners may earn a commission. A photo of the International Space Station in low-Earth orbit. | Credit: NASA Spaceflight may make certain types of human stem cells age faster, a study suggests — but at least some of the damage may be reversible. Spending time aboard the International …

Spaceflight may make certain types of human stem cells age faster, a study suggests — but at least some of the damage may be reversible. Spending time aboard the International Space Station (ISS) induced aging-like changes in a group of cells key for the health of blood and the immune system, known as hematopoietic stem and progenitor cells (HSPCs), a …

Stem cell transplantation can reverse stroke damage, researchers at the University of Zurich report. Its beneficial effects include regeneration of neurons and restoration of motor functions, marking a milestone in the treatment of brain disorders. One in four adults suffer a stroke in their lifetime, leaving around half of them with residual damage such as paralysis or speech impairment because …

Illustration showing a healthy substantia nigra in a human brain. Degeneration of this structure is characteristic of Parkinson’s disease. KATERYNA KON/SCIENCE PHOTO LIBRARY/Getty Images hide caption toggle caption KATERYNA KON/SCIENCE PHOTO LIBRARY/Getty Images Parkinson’s Disease affects around a million people in the United States, and that number is on the rise, in part because our population is getting older. Dr. …

The rigors of space travel could accelerate changes in the human body usually associated with aging. According to a new study of human tissues sent into low-Earth orbit, time in space reduces cell production, exacerbates DNA damage, and increases the signs of aging in the telomeres that cap the ends of the chromosomes. “Space is the ultimate stress test for …