California researchers and public health officials have launched what they describe as a groundbreaking series of studies of a rare mouse-borne virus that has infected at least nine Yosemite National Park visitors, killing three of them, since June.
By using the 1,200-square-mile (3,100-square-km) park and its rodent and human populations as a giant natural laboratory, scientists hope to gain new insights into how hantavirus is transmitted, how varied it might be and why certain people seem more susceptible than others.
THOSE who hoped the study would go away will be disappointed. Claims that eating genetically modified maize gives rats tumours have provoked a storm in Europe.
The advent of genomics has certainly played a heavy role in today’s popular genetics. Screening for elite males and females has become more exact and has rapidly driven genetic progress far beyond anyone’s wildest expectations in a relatively short period of time. While genomic technology currently holds its greatest stakes within elite dairy cattlebreeding programs, many commercial dairy operations are finding tremendous value and return on investment (ROI) in mass genomic screening.
Mayo Clinic researchers have found a way to detect and eliminate potentially troublemaking stem cells to make stem cell therapy safer. Induced Pluripotent Stem cells, also known as iPS cells, are bioengineered from adult tissues to have properties of embryonic stem cells, which have the unlimited capacity to differentiate and grow into any desired types of cells, such as skin, brain, lung and heart cells. However, during the differentiation process, some residual pluripotent or embryonic-like cells may remain and cause them to grow into tumors.
Biopolitical Times, an online publication of the Center for Genetics and Society, rekindled the debate over race with a recent commentary by Jessica Cussins on the value of the concept in medicine. Although not as biased in its coverage of genetics as anti-biotech campaigners and such groups as the ill-named Council for Responsible Genetics, it is known for its selective analysis of hot button genetics issues, the validity of the race concept among them.
In the first study of its kind, researchers at Korea’s leading university and the RNL Bio Stem Cell Technology Institute announced this week the results of a study that suggests an astounding possibility: adult stem cells may not only have a positive effect on those suffering from Alzheimer’s disease, they can prevent the disease. Using fat-derived adult stem cells from humans [scientific term: adMSCs, or human, adipose-derived mesenchymal stem cells], researchers were able to cause Alzheimer’s disease brains in animal models to regenerate. The researchers, for the first time in history, used stem cells to identify the mechanism that is key to treatment of Alzheimer’s disease, and demonstrated how to achieve efficacy as well as prevention of the symptoms of Alzheimer’s with adult stem cells, a “holy grail” of biomedical scientists for decades.
Researchers at Moffitt Cancer Center have discovered that the micro ribonucleic acid miR-214 plays a critical role in regulating ovarian cancer stem cell properties. This knowledge, said the researchers, could pave the way for a therapeutic target for ovarian cancer.
It is a dream for everyone as they grow older to turn back the clock and live in a younger body once again. While many have developed ways to make the body look younger cosmetically, there have been very few effective methods to combat the aging process within the body – until now.
For the first time ever, researchers have identified a crucial protein responsible for the decline of muscle repair and agility as the body ages. Upon this discovery, the scientists were able to effectively halt muscle decline in mice, giving hope to similar treatments for humans in the future.
During embryonic development in humans and other mammals, sperm and egg cells are essentially wiped clean of chemical modifications to DNA called epigenetic marks. They are then held in reserve to await fertilization.
A new research, conducted by the UK-based PG Economics Limited, has claimed that the use of biotech crops had resulted in an increase of $78.4 billion in global farm income during 1996 and 2010.
Last week French microbiologist Gilles-Eric Séralini and several colleagues released the results of a long-term study in which rats were fed genetically engineered (AKA genetically modified, or “GM”) corn that contains enhanced resistance to insects and/or the herbicide glyphosate. They took the unprecedented step of pre-releasing the paper to selected media outlets under an embargo on the condition that they sign a non-disclosure agreement. (That prevented the journalists from seeking scientific experts’ opinions on the article.) At a carefully orchestrated media event they then announced that their long-term studies found that the rats in experimental groups developed tumors at an alarming rate. Within hours news of their “discovery” echoed around the world. As we say today, the story “went viral.”
A man who says he’s at least half Native Hawaiian but doesn’t have the records to prove it is suing the state for not accepting DNA test results as evidence of his ancestry.
Researchers led by Professor Bruce Fitt, now at the University of Hertfordshire, have used modern DNA techniques on late nineteenth-century potatoes to show how the potato blight may have survived between cropping seasons after the Irish potato famine of the 1840s.