Fresh insights into how zebrafish repair their nerve connections could hold clues to new therapies for people with spinal cord injuries. Researchers at the University of Edinburgh have pinpointed key molecules that prompt damaged nerve fibres in the fish to regenerate themselves.
In saliva, scientists have found hints that a 'ghost' species of archaic humans may have contributed genetic material to ancestors of people living in sub-Saharan Africa today. The research adds to a growing body of evidence suggesting that sexual rendezvous between different archaic human species may not have been unusual.
Instead of having more children, a grandmother may pass on her genes more successfully by using her cognitive abilities to directly or indirectly aid her existing children and grandchildren. Such an advantage could have driven the evolution of menopause in humans, according to new research published in PLOS Computational Biology.
A new study involving CU Boulder shows why some cells treated with radiation therapy for cancer leak chemical signals and damage unexposed healthy cells, findings that could lead to new medications that patients could take prior to radiation.
It is estimated that parents seeking to have children through in vitro fertilization (IVF) spend between $12,000 and $15,000 each session plus the cost of medications, which could average between $3,000 and $5,000. Now, researchers at the University of Missouri publishing in the Proceedings of the National Academy of Science have made a discovery that could decrease the costs associated with IVF in humans--and it all started with piglets.
Pregnant women who have a healthy diet and regular moderate exercise are less likely to have a caesarean section, gain excessive weight, or develop diabetes in pregnancy, according to a study led by Queen Mary University of London using data from over 12,000 women.
Many pregnant women undergo some form of prenatal testing before their children are born. The information that expectant mothers gain from these tests vary, from the baby's gender to genetic defects. But the tests are often invasive, which can potentially harm the fetus and the mother. Now, one group reports in ACS Nano that they have developed a device that provides sensitive results, but in a less invasive way: a blood test.
Does each cell in the embryo have a genetically predetermined fate, or are cell interactions important? UC Berkeley researchers have for the first time linked the two, showing how the tug of war between cells in the developing skin mobilizes a protein that triggers a genetic program to differentiate into a specific cell type, a feather follicle. This could provide tips on how to make more realistic artificial skin, with hairs and sweat glands.
A new report by the National Academies of Sciences, Engineering, and Medicine proposes a strategy that the US Environmental Protection Agency (EPA) should use to evaluate the evidence of adverse human health effects from low doses of exposure to chemicals that can disrupt the endocrine system.
Globally, the health and well-being of women, children and adolescents are improving faster than at any point in history, even in the poorest nations. The transformation is due in great measure to the interventions promoted by one of the most successful global multi-stakeholder partnerships in history, Every Woman Every Child.