Adding newborn brain cells to an aging brain can improve memory and decision-making, according to a new study. Adult mice with newborn neurons in the hippocampus, which governs memory and learning, were better able to distinguish between similar events and make better-informed choices. Combined with exercise over a period of time, adding new neurons even had anti-depressant effects, the study says.
Some of the greatest discoveries in science have been total accidents — Alexander Fleming's use of penicillin, Wilson and Penzias' discovery of the cosmic microwave background, etc. Today, scientists announced they've once again unintentionally made a monumental discovery: A cure for baldness. OK, only in mice.
Still, the finding — involving a chemical compound that blocks a stress hormone — could lead to human hair loss treatments, the scientists say. The researchers have applied for a patent on the use of the compound for hair growth.
A laboratory at the University of Osaka running an ongoing study on evolution has revealed that they’ve produced a genetically engineered mouse that tweets like a bird. They’ve produced more than 100 of them actually, as well as a mouse with short limbs and one with a tail like a dachshund. It’s all part of a larger study into how genetic mutations drive evolutions and diverse outcomes that can come about as a result of miscopying DNA.
Using stem cell technology, scientists have produced male and female mice from two fathers, a breakthrough that could conceivably allow same-sex couples to have their own genetic children.
The multi-generational technique combines genes from the chromosomes of two male mice and uses surrogate mothers, according to researchers at the M.D. Anderson Cancer Center at the University of Texas.
Apparently men and women are not that different after all. In fact, the sexes are so similar that women have to fight their entire lives just to remain women -- at least on the genetic level.
A new study finds that turning off just one gene, shared by all mammals, turns ovarian cells into testosterone-producing cells found only in the testes -- and this is in adults.
Why does stress turn some people into lifelong boozers, while others can gut it out with no lasting harm? Researchers at Munich's Max Planck Institute of Psychiatry studied this question by testing mutant mice that couldn't handle stress well. The answer, they now say, may lie in our genes.